Kev ntsuas qhov ceev ntawm cov slurry tam sim no yog qhov tseem ceeb hauv cov txheej txheem tsim polyethylene, uas yog lub hauv paus ntawm kev tsim khoom zoo tshaj plaws, kev nyab xeeb, thiab kev tswj hwm zoo. Kev saib xyuas qhov ceev ntawm cov slurry kom raug ua kom ntseeg tau tias ob qho tib si high-density polyethylene (HDPE) thiab lwm hom polyethylene raug tsim tawm hauv qab kev tswj hwm nruj, uas cuam tshuam ncaj qha rau cov hom phiaj ua haujlwm tseem ceeb ntawm txhua theem ntawm kev tsim khoom.
Kev Taw Qhia Txog Cov Txheej Txheem Tsim Khoom Polyethylene
Polyethylene, tshwj xeeb tshaj yog polyethylene siab ntom (HDPE), yog qhov tseem ceeb rau kev tsim kho vaj tse niaj hnub no, kev ntim khoom, tsheb, thiab kev tsim kho. Nws qhov sib piv siab zog-rau-qhov ceev, kev tiv thaiv tshuaj lom neeg, thiab kev hloov pauv tau ua rau muaj kev siv dav hauv cov ntawv thov tseem ceeb, nrog HDPE cov kav dej, cov thawv, thiab cov yeeb yaj kiab pom muaj nyob rau hauv txhua yam los ntawm cov dej haus mus rau cov khoom noj ntim.
HDPE feem ntau yog tsim los ntawm peb txoj kev polymerization hauv kev lag luam: cov txheej txheem slurry, cov txheej txheem roj-theem, thiab cov txheej txheem kua. Txhua tus ua rau cov khoom kawg ntawm polymer, cuam tshuam rau kev nyab xeeb ua haujlwm, thiab txiav txim siab txog kev ua haujlwm ib puag ncig. Cov txheej txheem slurry, qee zaum hu ua cov txheej txheem ncua, siv cov kuab tshuaj hydrocarbon ua cov khoom nruab nrab uas ethylene monomers polymerize, tsim cov khoom HDPE uas raug ncua. Cov txheej txheem roj-theem ua haujlwm yam tsis muaj cov kuab tshuaj, siv cov reactors txaj fluidized los polymerize ethylene nrog cov khoom catalyst ncua hauv ib puag ncig gaseous. Cov txheej txheem kua yaj cov polymer hauv cov kuab tshuaj hydrocarbon ntawm qhov kub siab, tsim HDPE nrog cov yam ntxwv tshwj xeeb, txawm hais tias txoj kev no pom kev siv tshwj xeeb ntau dua vim muaj kev nyuaj ua haujlwm.
Kev Siv Tshuab Polyethylene
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Ntawm cov no, cov txheej txheem slurry yog qhov kev xaiv zoo tshaj plaws hauv cov chaw tsim khoom polyethylene, tshwj xeeb tshaj yog rau cov qib HDPE txheem thiab tshwj xeeb xws li PE80 thiab PE100 rau cov yeeb nkab. Cov txheej txheem no muaj zog, hloov tau yooj yim, thiab ua rau muaj kev tswj hwm qhov hnyav ntawm HDPE molecular faib - qhov tseem ceeb rau cov ntawv thov uas xav tau lub zog kho tshuab thiab kev tawg tsis kam. Nws yooj yim ntawm kev sib cais cov kuab tshuaj thiab muaj peev xwm tswj tau ntau yam HDPE qib ua rau nws tsis tseem ceeb rau kev tsim cov khoom nrog cov qauv zoo, xws li cov kav dej khov thiab cov thawv ntim khoom lag luam siab. Kev ua kom zoo tshaj plaws slurry polymerization tau teeb tsa tus qauv rau kev ntseeg tau, kev sib xws loj, thiab kev yooj yim tsim khoom hauv cov txheej txheem tsim polyethylene thoob ntiaj teb. Qhov no yog vim li cas kev saib xyuas thiab tswj kev ntsuas, suav nrog kev ntsuas slurry ceev tiag tiag siv cov khoom siv xws li slurry density meter thiab ultrasonic slurry density meter, yog qhov tseem ceeb hauv kev tswj hwm cov txheej txheem ua haujlwm zoo thiab cov khoom zoo hauv cov txheej txheem slurry polyethylene tsim khoom.
Cov Txheej Txheem Slurry rau Kev Tsim Polyethylene
Cov txheej txheem slurry yog ib qho txheej txheem tsim cov polyethylene tseem ceeb, tshwj xeeb tshaj yog rau cov polyethylene siab (HDPE). Lub hauv paus rau nws txoj haujlwm yog lub voj voog reactor qhov twg ethylene polymerizes hauv kev ncua hauv cov hydrocarbon solvent, feem ntau yog isobutane lossis hexane. Ethylene monomer, comonomers (yog siv), thiab catalyst raug pub tas li rau hauv lub reactor. Cov khoom polymer tsim thiab tseem nyob twj ywm, tsim cov slurry ntom uas ncig hauv qab kev ua haujlwm ntawm cov twj tso kua mis reactor. Kev sib xyaw ua ke zoo yog qhov tseem ceeb - xyuas kom meej tias cov khoom khov kho nyob twj ywm thiab ua kom muaj kev sib cuag ntawm monomer thiab catalyst.
Hauv qhov kev teeb tsa no, cov hydrocarbon solvents ua haujlwm ua cov tshuaj tiv thaiv es tsis yog cov tshuaj tiv thaiv tiag tiag. Lawv tshem tawm cov cua sov, pab thauj cov khoom me me, thiab pab cais cov polymer uas loj hlob ntawm qhov chaw catalyst. Cov qauv tsim ntawm Reactor muaj cov kauj txias sab hauv thiab cov khoom siv twj tso kua mis zoo tshaj plaws los tswj cov khoom siv cua sov exothermic thiab txo qhov kev pheej hmoo ntawm kev ua qias tuaj, ib qho kev sib tw uas tshwm sim thaum cov khoom polymer o thiab sib sau ua ke thaum loj hlob. Cov reactors voj voog siab heev suav nrog cov txheej txheem twj tso kua mis ob lub tshuab thiab kev ua haujlwm cyclic los tswj kev siv zog ntawm lub twj tso kua mis thiab txo qhov yuav tshwm sim ntawm kev thaiv los ntawm kev nce viscosity lossis kev sib sau ua ke ntawm cov khoom polymer. Cov qauv simulation qhia tau hais tias yog tias kev o tsis raug tswj, viscosity nce, ntws tsis ruaj khov, thiab fouling lossis txawm tias reactor kaw yuav tshwm sim. Kev cuam tshuam tsim, xws li kev kho qhov chaw twj tso kua mis lossis kev koom ua ke ntawm kev ua haujlwm cyclic, tau raug lees paub los txhim kho kev ua haujlwm txuas ntxiv thiab kev nyab xeeb.
Catalysis yog lub hauv paus thev naus laus zis ntawm cov txheej txheem slurry polyethylene. Ob chav kawm ntawm cov catalysts dominate: Ziegler-Natta thiab chromium-based (Phillips) catalysts. Ziegler-Natta catalysts feem ntau siv cov magnesium dichloride txhawb nqa thiab titanium-based actives, muab kev tswj hwm meej rau HDPE qhov kev faib tawm molecular hnyav, qhov ceev, thiab lwm yam khoom tseem ceeb. Cov kev hloov pauv siab heev tso cai rau cov qauv molecular bimodal: ib feem pua siab-molecular-weight rau lub zog kho tshuab thiab ib feem pua qis-molecular-weight rau processability. Polymerization kinetics tuaj yeem hloov kho los ntawm kev hloov pauv hydrogen concentration, uas tswj cov nqi xaus saw, cov txiaj ntsig, thiab qhov loj me ntawm cov khoom me me. Ziegler-Natta catalysts yog li ua rau muaj kev cai tailoring ntawm cov yam ntxwv tseem ceeb HDPE, tseem ceeb rau cov ntawv thov xws li cov yeeb nkab qib xav tau kev tawv tshwj xeeb thiab kev tiv thaiv tawg.
Cov tshuaj tua kab mob Phillips (chromium oxide) ua haujlwm los ntawm ib txoj hauv kev sib txawv, qhov twg chromium alkyls ua haujlwm ua lub hauv paus tseem ceeb ntawm polymerization. Cov tshuaj tua kab mob no muaj zog, siv tau ntau yam, thiab muaj peev xwm tsim HDPE nrog qhov nruab nrab mus rau qhov ceev thiab zoo heev rau kev tiv thaiv kev ntxhov siab ntawm ib puag ncig. Txawm li cas los xij, cov khoom siv polymer uas ua tau yog tsawg dua piv rau Ziegler-Natta systems, nrog kev tswj hwm tsawg dua ntawm kev faib tawm qhov hnyav molecular. Cov txheej txheem hloov pauv - tshwj xeeb tshaj yog qhov kub thiab txias, siab, thiab cov ntsiab lus hydrogen - tseem siv los tsim cov qib HDPE, txawm hais tias muaj kev hloov pauv sib txawv.
Cov xwm txheej ua haujlwm hauv lub tshuab ua kua dej - kub, siab, thiab kev sib xyaw - ncaj qha cuam tshuam rau cov yam ntxwv ntawm cov khoom me me. Cov kub ib txwm muaj txij li 85 ° C txog 110 ° C, thaum lub siab tswj hwm ntawm 5 txog 40 bar kom khaws cov kuab tshuaj hauv cov kua thiab tsav ethylene solubility. Kev sib xyaw ua ke cuam tshuam rau qhov loj me thiab kev sib xws ntawm cov khoom me me, tiv thaiv kev sib sau ua ke thiab kev sib sau ua ke. Kev kho kom zoo dua cov xwm txheej no ua rau cov khoom me me polymer zoo dua, ua kom muaj kev sib xyaw ua ke, morphology, thiab cov khoom siv lub cev. Kev tswj hwm cov hydrogen theem kho qhov ntev ntawm cov saw hlau thiab yog li cov resin lub zog thiab cov ntsuas dej yaj. Cov kev tshawb fawb tsis ntev los no siv cov qauv molecular dynamics thiab kev tshuaj xyuas thermal lees paub cov kev ntsuas no lub luag haujlwm tseem ceeb hauv kev kho cov qauv crystalline, modulating lamellar qauv, thiab yog li tswj kev ua haujlwm kho tshuab.
Cov txheej txheem slurry tseem yog ib qho txheej txheem xaiv rau kev tsim cov HDPE muaj zog siab. Nws tsis tsuas yog ua rau muaj kev tsim khoom siab xwb tab sis kuj tseem tswj hwm qhov zoo nruj los ntawm kev hloov kho lub sijhawm tiag tiag ntawm cov txheej txheem hloov pauv thiab cov qauv catalyst. Cov qauv kho tshuab tuaj yeem tsim tau meej, ua rau HDPE tsim nyog rau cov kav dej siab (PE80, PE100), cov thoob roj, thiab cov thawv tshuab pwm. Cov thev naus laus zis muaj kev ywj pheej hauv kev kho cov qauv molecular txhawb nqa cov qib khoom siv uas ua tau raws li ntau yam kev cai lij choj thiab kev ua tau zoo. Ua ke nrog kev nce qib hauv kev ua qauv txheej txheem thiab kev koom ua ke ntawm cov cuab yeej ntsuas lub sijhawm tiag tiag - xws li Lonnmeter's custom slurry density meters - cov chaw tsim khoom ua tiav cov resin zoo sib xws thiab kev ua haujlwm zoo, tseem ceeb rau kev siv ntau yam xws li cov kav dej hauv nroog mus rau cov neeg siv khoom ntim khoom.
Cov duab qhia txog kev ua kom zoo dua tshiab ntawm cov txheej txheem, kev ua haujlwm ntawm catalyst, thiab kev sib cuam tshuam ntawm cov txheej txheem hloov pauv thiab cov khoom HDPE tau muab luam tawm dav hauv cov ntawv xov xwm uas tau tshuaj xyuas los ntawm cov phooj ywg. Cov peev txheej no qhia txog cov txheej txheem slurry qhov kev ywj pheej, kev nthuav dav, thiab lub peev xwm tshwj xeeb rau kev tsim cov qib HDPE ua tus thawj coj hauv kev lag luam ntawm qhov loj, uas qhia txog nws txoj kev tswj hwm hauv cov chaw tsim khoom polyethylene siab heev.
Lub Luag Haujlwm Tseem Ceeb ntawm Kev Ntsuas Qhov Ceev ntawm Slurry hauv Cov Nroj Tsuag Polyethylene
Qhov kev ntsuas ntawm qhov ceev ntawm cov slurry yog qhov tseem ceeb rau kev ntsuas cov monomer, catalyst, thiab co-monomer ntws thoob plaws hauv cov txheej txheem slurry. Kev hloov pauv ntawm qhov ceev tuaj yeem qhia txog kev hloov pauv ntawm cov khoom khov, uas cuam tshuam rau polymerization kinetics thiab ua rau cov txheej txheem tsis ruaj khov. Kev tswj hwm qhov ceev ntawm lub hom phiaj tso cai rau kev kho tam sim ntawd ntawm cov nqi ntws monomer thiab cov tshuaj catalyst, ua rau cov khoom lag luam zoo dua thiab kev siv cov khoom siv raw zoo.
Cov slurry density cuam tshuam rau kev nyab xeeb ntawm cov khoom siv thiab kev ruaj khov ntawm cov txheej txheem. Cov khoom khov siab ua rau cov slurry viscosity nce siab, ua rau cov twj tso kua mis ntau ntxiv thiab ua rau muaj kev pheej hmoo ntawm kev ua qias tuaj lossis kev thaiv reactor. Kev hloov pauv ntawm qhov ceev tsis tswj tau yuav ua rau muaj qhov kub thiab txias, kev hloov pauv cua sov tsis sib xws, thiab thaum kawg, kev phom sij rau kev ua haujlwm. Los ntawm kev siv kev saib xyuas qhov ceev tas mus li - siv cov cuab yeej inline xws li ultrasonic slurry density meters uas tsim rau cov chaw ua haujlwm zoo li cov los ntawm Lonnmeter - cov nroj tsuag tau txais cov lus ceeb toom thaum ntxov uas tso cai rau kev cuam tshuam ua ntej qhov tseem ceeb raug ua txhaum. Qhov kev sib txuas ncaj qha ntawm cov ntaub ntawv qhov ceev thiab kev tiv thaiv txheej txheem yog qhov tseem ceeb rau kev ua haujlwm nyab xeeb, tsis muaj kev cuam tshuam hauv cov nroj tsuag polyethylene tsim khoom.
Kev ntsuas qhov ceev ntawm cov slurry tam sim no kuj ua rau cov khoom zoo. Qhov ceev sib xws ua kom muaj kev tswj hwm qhov ntsuas ntws ntawm cov yaj, qhov loj ntawm cov khoom me me, thiab lwm yam khoom polymer tseem ceeb rau cov neeg siv khoom. Kev ntsuas hauv kab hloov chaw kuaj thiab kuaj uas siv zog ntau, muab cov lus teb tam sim ntawd rau kev sib xyaw thiab ua tiav theem. Qhov no ua kom cov voj voog tso tawm sai dua, txo cov khoom tsis lees txais, thiab txo cov khib nyiab, tag nrho cov no txo cov nqi tsim khoom rau cov chaw tsim cov polyethylene siab thiab cov qib zoo sib xws. Kev hloov pauv ntawm qhov ceev ntawm cov slurry, thaum ntes tau thaum ntxov los ntawm cov ntsuas inline customized, tuaj yeem kho tau ua ntej cuam tshuam rau cov khoom kawg, tiv thaiv ob qho tib si cov txheej txheem tsim tawm thiab zoo.
Kev ntsuas thiab tswj cov slurry density thoob plaws hauv cov txheej txheem tsim polyethylene tam sim no tau ua tiav nrog cov kev daws teeb meem siab heev xws li ultrasonic slurry density meters. Cov cuab yeej no ua haujlwm sai, tsis ua rau mob, thiab haum rau cov xwm txheej hnyav, abrasive uas ntsib hauv HDPE ntau lawm. Cov inline density meters niaj hnub - xws li cov uas tsim los ntawm Lonnmeter - muab cov ntaub ntawv txhim khu kev qha, txuas ntxiv mus yam tsis muaj cov khoom siv radioactive, txo cov nra hnyav txij nkawm thiab ua raws li lub hom phiaj kev noj qab haus huv thiab kev nyab xeeb.
Kev tswj cov slurry density zoo tsis yog tsuas yog ua kom zoo dua kev siv cov khoom siv raw xwb tab sis kuj ua rau kev ua haujlwm zoo dua thiab xyuas kom meej tias cov khoom ntawm high density polyethylene ua tau raws li qhov xav tau ntawm kev ua lag luam. Kev saib xyuas tas mus li txo cov khib nyiab thiab kev siv hluav taws xob, ua kom ruaj khov ntawm cov khoom siv, thiab txhim kho kev ua lag luam thoob plaws hauv cov khoom xa tuaj. Kev siv cov txheej txheem ntsuas slurry density tiag tiag, inline sawv cev rau qhov txiav txim siab rau kev sib tw thiab kev ruaj khov ntawm cov chaw tsim khoom polyethylene niaj hnub no.
Cov Txuj Ci Rau Kev Ntsuas Qhov Ceev ntawm Slurry: Ua Tau Raws Li Qhov Xav Tau ntawm Kev Tsim Khoom Polyethylene Niaj Hnub
Cov chaw tsim khoom polyethylene vam khom kev ntsuas qhov ceev ntawm cov slurry kom raug kom ntseeg tau tias cov khoom zoo sib xws thiab tswj kev ua haujlwm zoo thiab muaj kev nyab xeeb. Muaj ntau txoj hauv kev tseem ceeb tau tshwm sim los daws cov kev xav tau tshwj xeeb ntawm cov txheej txheem slurry hauv polyethylene, nrog rau kev hloov pauv sai hauv cov thev naus laus zis saib xyuas qhov ceev tiag tiag.
Cov txheej txheem ntsuas qhov ceev ntawm cov slurry ib txwm muaj, xws li kev kuaj tes thiab kev ntsuas qhov ceev ntawm nuclear, muaj qhov tsis zoo heev. Kev kuaj tes raug kev cuam tshuam qeeb thiab kev hloov pauv vim yog kev cuam tshuam ntawm tus neeg teb xov tooj; cov txheej txheem nuclear ua rau muaj kev pheej hmoo rau kev noj qab haus huv thiab kev nyab xeeb, xav tau kev saib xyuas nruj, thiab tsis yooj yim hloov pauv rau cov txheej txheem hloov pauv sai. Cov kev txwv no tsav kev siv cov kev daws teeb meem tsis muaj kev cuam tshuam, tsis siv neeg uas xa cov ntaub ntawv ua tau tiag tiag, lub sijhawm tiag tiag nyob rau hauv cov xwm txheej ntawm kev tsim cov polyethylene siab.
Ultrasonic Slurry Density Meter: Kev Nce Qib thiab Cov Zoo
Lub tshuab ntsuas qhov ntom ntawm cov kua nplaum ultrasonic yog lub thev naus laus zis tseem ceeb hauv cov reactors niaj hnub no. Siv lub hauv paus ntsiab lus ntawm lub sijhawm ya, cov nthwv dej ultrasonic raug xa mus los ntawm cov kua nplaum thiab lub sijhawm mus ncig yog sib raug zoo nrog qhov ntom. Txoj kev no muaj ntau lub zog tseem ceeb rau cov txheej txheem tsim cov polyethylene:
- Kev ua haujlwm tsis phais:Cov sensors zam kev sib cuag ncaj qha nrog cov slurry, txo qis kev siv tshuab, kev pheej hmoo ntawm kev ua qias tuaj, thiab lub sijhawm tsis ua haujlwm rau kev txij nkawm.
- Kev Tseeb thiab Kev Ntseeg Tau:Cov lus teb rov qab tiag tiag thiab kev tsim kho sensor robust ua kom muaj kev ntseeg siabacckev ua siab loj 0.001g/ml, txawm tias nyob rau hauv cov xwm txheej abrasive lossis particulate-nplua nuj qhov twg cov txheej txheem ib txwm ua tsis taul.
- Kev Hloov Kho Kom Haum Rau Ib puag ncig Nyuaj:Cov cuab yeej ntsuas ultrasonic tiv taus qhov kub siab, kev raug tshuaj lom neeg, thiab kev puas tsuaj ntawm cov khoom siv uas feem ntau pom muaj nyob rau hauv cov reactors polymerization.
- Kev Tswj Xyuas Txheej Txheem Txuas Ntxiv Mus:Cov thev naus laus zis txhawb nqa kev hloov kho dynamic, automated ntawm cov txheej txheem parameters, pab txhawb kev ua haujlwm reactor ruaj khov thiab cov khoom zoo polyethylene siab sib xws.
Kev sib xyaw ua ke ntawm ultrasonic ua rau cov meters no zoo dua; cavitation thiab cov zog shear siab hauv cov txheej txheem ua kom muaj kev sib kis zoo dua thiab kev sib xws, txhim kho kev ntseeg siab ntawm kev ntsuas thiab kev ua tau zoo ntawm polymerization. Hauv kev ua haujlwm tiag tiag, cov ntsuas qhov ceev ultrasonic yooj yim ntes tau qhov hloov pauv theem thiab kev hloov pauv me me hauv kev tsim kho network polymer, tso cai rau kev kho tam sim ntawd rau cov khoom thiab cov txheej txheem kev ua kom zoo dua.
Kev Ntsuas Qhov Ceev Uas Kho Kom Haum Rau Cov Chaw Ua Reactor Nyuaj
Tsis yog txhua qhov chaw tsim cov polyethylene zoo ib yam. Cov reactors feem ntau xav tau cov ntsuas qhov ceev ntawm cov slurry kom haum rau cov khoom siv sai, kev co muaj zog, thiab kev hloov pauv kub heev. Cov chaw tsim khoom ntsuas qhov ceev ntawm cov slurry tau teb nrog cov kev tsim kho tshiab xws li cov cuab yeej ntsuas qhov ceev bypass uas sib xyaw cov txheej txheem rov kho dua siv dej ua piv txwv. Tus qauv tsim no tiv thaiv kev ua qias tuaj thiab ua kom muaj qhov tseeb sib xws ntawm cov txheej txheem khiav yam tsis tas yuav ntxuav ntau.
Lwm cov kev daws teeb meem tshiab siv cov ntsiab cai ntsuas tsis sib cuag, xws li magnetic induction tomography, uas siv cov electrodes annular thiab ntau lub kauj los ntsuas cov khoom khov hauv cov slurries nyuaj. Txoj hauv kev no muab kev ntsuas ruaj khov, raug siab (tau lees paub los ntawm kev tshawb fawb sim) thiab tau tsim los rau kev hloov kho dua tshiab rau hauv cov chaw tsim khoom polyethylene qub yam tsis muaj kev cuam tshuam loj lossis kev hloov pauv loj heev.
Cov ntsuas qhov ceev ntawm cov slurry uas tau hloov kho tshwj xeeb los ntawm cov tuam txhab tshwj xeeb kuj daws cov teeb meem ntawm kev co ntawm lub twj tso kua mis thiab kev cuam tshuam ntawm lub reactor. Cov yam ntxwv xws li modular sensor mounts thiab kev ua cov teeb liab siab heev txhim kho kev ntsuas ruaj khov, ua kom lub neej siv khoom ntev dua, thiab ua kom yooj yim rau kev saib xyuas niaj hnub.
Kev Sib Koom Tes Cov Tshuab Slurry Density nrog Kev Tswj Xyuas Txheej Txheem Siab Tshaj Plaws
Hauv cov nroj tsuag niaj hnub no, cov ntsuas qhov ceev ntawm cov slurry zoo tshaj plaws, tshwj xeeb tshaj yog cov ultrasonic units, ua haujlwm ua cov khoom tseem ceeb hauv cov txheej txheem tswj hwm txheej txheem siab heev (APC). Kev txuas cov ntaub ntawv ceev ntawm cov slurry tiag tiag ncaj qha mus rau cov platform automation ua rau muaj ntau qhov zoo:
- Kev Txhim Kho Cov Txheej Txheem Sib Xws:Kev kho qhov tsis siv neeg txo qhov kev cuam tshuam tes, tiv thaiv kev hloov pauv sai sai thiab ua kom lub reactor ua haujlwm ruaj khov.
- Kev Txhim Kho Khoom Sib Xws:Cov voj voog tawm tswv yim raws li qhov tseeb, kev nyeem ntawv ceev nrooj tas mus li pab tswj cov khoom siv resin thoob plaws cov pawg.
- Kev Ua Haujlwm Muaj Kev Nyab Xeeb Dua, Ntsuab Dua:Cov kev daws teeb meem ultrasonic tshem tawm cov chaw muaj radioactive, ua raws li cov qauv ib puag ncig niaj hnub no, kev nyab xeeb, thiab kev ruaj khov.
- Tus nqi thiab kev saib xyuas zoo:Nrog tsawg dua qhov kev ntsuas thiab txo qis qhov ua qias tuaj, cov ntsuas ceev niaj hnub no txo cov nqi ua haujlwm thiab zam kev poob haujlwm tsis tau npaj tseg.
Cov peev xwm sib koom ua ke software, cov yam ntxwv ntse calibration, thiab kev sib txuas ntawm modular sensor—uas muaj nyob rau hauv cov khoom siv slurry density meter tam sim no los ntawm Lonnmeter thiab lwm cov chaw tsim khoom uas tsom mus rau kev cai—yooj yim rau kev kho dua tshiab thiab kev ntsuas. Cov yam ntxwv no ua kom muaj kev sib koom ua ke nrog cov kab ke tswj hwm faib tawm, txhawb nqa kev ua kom zoo dua qub los ntawm cov ntaub ntawv thoob plaws hauv cov txheej txheem tsim khoom polyethylene.
Ntxiv rau qhov no, qhov ruaj khov ntawm cov ntaub ntawv sensor thiab qhov muaj zog ntawm kev xa cov teeb liab nyob rau hauv cov txheej txheem hnyav, thiab cov thev naus laus zis ntsuas qhov ceev ntawm cov slurry tam sim no ua tiav txhua yam kev xav tau niaj hnub no rau lub sijhawm tiag tiag, kev zoo thoob plaws hauv cov nroj tsuag thiab kev tswj cov txheej txheem hauv kev ua haujlwm polyethylene siab.
Kev Kho Kom Haum thiab Xaiv Cov Ntsuas Qhov Ceev ntawm Slurry: Kev daws teeb meem tshwj xeeb rau cov nroj tsuag
Kev ntsuas qhov ceev ntawm cov slurry tam sim no yog lub hauv paus rau kev ua haujlwm zoo ntawm cov khoom hauv cov txheej txheem tsim polyethylene. Kev ua tau zoo ntawm lub ntsuas qhov ceev ntawm cov slurry ncaj qha cuam tshuam rau kev tswj cov txheej txheem, kev siv hluav taws xob, thiab cov lus qhia txog cov khoom kawg hauv lub Hoobkas tsim polyethylene. Txawm li cas los xij, cov xwm txheej dynamic hauv cov polyethylene siab (HDPE) thiab lwm yam polyethylene reactor systems xav tau cov meters hloov kho rau txhua lub Hoobkas qhov tseeb ua haujlwm.
Vim Li Cas Cov Kev Ntsuas Ua Haujlwm Thiaj Xav Tau Cov Kev Daws Teeb Meem Tshwj Xeeb
Cov yam ntxwv tseem ceeb ntawm cov txheej txheem—monomer throughput, qhov xwm txheej thiab qhov nrawm ntawm cov catalyst, thiab qhov ntsuas reactor—hloov pauv tus cwj pwm slurry. Cov monomer throughput siab tuaj yeem ua rau cov khoom khov kho, hloov cov txheej txheem ntws, thiab cuam tshuam rau qhov sib txuas ntawm cov khoom catalyst khoom khov kho, monomers, thiab cov saw polymer loj hlob. Cov dej ntws no hauv cov khoom slurry yog mirrored hauv cov kev hloov pauv ceev tiag tiag uas tsuas yog lub ntsuas ceev uas tau teeb tsa zoo tuaj yeem ntes tau.
Kev xaiv cov tshuaj catalyst thiab kev sib sau ua ke ua rau cov agglomerate morphology. Piv txwv li, cov tshuaj catalysts uas ua los ntawm silica ua rau muaj qhov loj me ntawm cov khoom me me thiab kev sib sau ua ke sib txawv dua li cov uas ua los ntawm lwm cov kev txhawb nqa. Cov kev hloov pauv no yuav tsim cov slurries nrog cov pawg sib txawv, cov cwj pwm ntws, thiab cov cwj pwm rau kev ua qias tuaj ntawm lub sensor. Yog tias qhov kev ntsuas calibration lossis thev naus laus zis tsis suav nrog cov no, qhov yuam kev loj heev ntawm kev ntsuas qhov ceev tuaj yeem tshwm sim, ua rau cov khoom tsis raws li qhov xav tau lossis txawm tias kev cuam tshuam kev ua haujlwm.
Qhov ntsuas ntawm lub tshuab ua kua dej ua rau muaj teeb meem ntxiv. Cov tshuab ua kua dej loj uas feem ntau siv hauv HDPE tsim muaj cov dej ntws uas tsis yog Newtonian, feem ntau yog heterogeneous. Kev sib txuas, kev sib sau ua ke, thiab kev hloov pauv hauv zos hauv kev faib cov khoom khov-kua dej xav tau ob qho tib si cov ntsuas ntsuas muaj zog thiab cov txheej txheem calibration yooj ywm. Ib qho cuab yeej txheem, "off-the-shelf" feem ntau ua tsis tau zoo hauv cov ntawv thov no, tsav qhov xav tau ntawm lub ntsuas qhov ceev slurry uas tau tsim tshwj xeeb rau cov kev xav tau polyethylene slurry tshwj xeeb ntawm lub Hoobkas.
Cov Ntsiab Lus Tseem Ceeb ntawm Kev Tsim Qauv Meter
Lub ntsuas qhov ceev ntawm cov kua nplaum uas tau hloov kho tshwj xeeb feem ntau siv cov sensors uas tsis cuam tshuam, tiv taus kev txhuam - thev naus laus zis ultrasonic yog qhov nrov vim nws ruaj khov mus sij hawm ntev hauv qhov chaw nyuaj. Qhov twg cov khoom khov thiab cov txheej txheem ntws sib txawv heev, zoo li hauv HDPE lossis lwm yam polyethylene reactors, cov ntsuas niaj hnub no suav nrog cov khoom bypass-mounted rau kev txo qis fouling thiab yooj yim dua rau kev ntxuav tus kheej.
Cov ntsuas yuav tsum tau ntsuas kom raug rau cov qauv ntawm cov khoom me me, qhov ntau thiab tsawg ntawm cov khoom khov kho, thiab qhov kub ntawm cov txheej txheem. Kev suav nrog kev rov ntsuas dua tshiab, zoo li cov txheej txheem siv dej, ua rau cov ntaub ntawv ntseeg tau ntxiv. Cov yam ntxwv no tso cai rau lub ntsuas hloov kho rau ob qho tib si kev hloov pauv ib ntus thiab kev hloov pauv mus tas li, ua kom ntseeg tau tias kev nyeem ntawv sib xws thiab raug txawm tias cov khoom siv ntawm cov kua dej hloov pauv.
Kev teeb tsa lub 'meter' kuj tseem ceeb heev; qhov chaw zoo tshaj plaws ua kom muaj kev sib koom ua ke ntawm cov dej ntws, zam cov cheeb tsam ntawm cov dej ntws tuag lossis cov dej ntws ntau dhau. Kev tsim cov polyethylene hauv ntiaj teb tiag tiag tau txais txiaj ntsig los ntawm kev tso cov 'meter' rau hauv cov cheeb tsam uas muaj kev txav mus los siab thiab sib npaug, uas txo qis kev ncua sij hawm ntsuas thiab qhov yuam kev vim muaj kev sib sau ua ke hauv zos.
Xaiv Lub Chaw Tsim Khoom Siv Slurry Density Meter
Kev xaiv lub chaw tsim khoom ntsuas qhov ntom ntawm cov slurry uas raug cai yog qhov tseem ceeb npaum li kev xaiv tus qauv tsim kom raug. Plaub qhov tseem ceeb yog qhov tseem ceeb:
Kev Txhawb Nqa:Kev pab txhawb nqa uas teb tau sai thiab paub txog yog qhov tseem ceeb rau kev teeb tsa, kev teeb tsa, thiab kev tswj cov ntsuas hauv cov chaw ua haujlwm uas nyuaj heev. Tus neeg muag khoom yuav tsum ua pov thawj tias nws txawj ua haujlwm nrog cov polyethylene slurries, muab kev taw qhia rau kev ntsuas lub sensor thiab kev siv mus sij hawm ntev.
Cov Ntaub Ntawv Pov Thawj:Cov chaw tsim khoom zoo li Lonnmeter uas muaj keeb kwm ntawm kev muab cov ntsuas qhov ceev inline uas ntseeg tau thiab raug siab rau cov neeg siv khoom lag luam yuav tsum tau muab qhov tseem ceeb. Cov ntaub ntawv thiab cov ntaub ntawv kawm los ntawm cov chaw tsim khoom polyethylene zoo sib xws yog qhov tseem ceeb los tsim kom muaj kev ntseeg siab.
Kev Hloov Tau:Tus khub yuav tsum muaj ntau yam kev xaiv uas koj tuaj yeem teeb tsa tau: hom sensor (ultrasonic, bypass, direct immersion), qhov ntsuas ntau npaum li cas, cov ntaub ntawv uas tiv taus tshuaj lom neeg/catalyst, thiab kev koom ua ke nrog cov qauv ntws tshwj xeeb ntawm cov nroj tsuag.
Kev koom ua ke nrog Cov Txheej Txheem Cog Khoom Digital:Txawm hais tias cov chaw tsim khoom ntsuas tsis xa cov tshuab digital tag nrho, cov hom ntawv tso zis ntaub ntawv yuav tsum sib haum nrog cov nroj tsuag automation - piv txwv suav nrog cov zis analog muaj zog, HART, lossis Modbus protocols, pab txhawb kev saib xyuas cov txheej txheem tiag tiag thiab kev tswj hwm interfaces.
Ib lub tuam txhab ua khoom ntsuas qhov ceev ntawm cov kua nplaum uas ua raws li tus qauv yuav pab kho cov kev cai txij nkawm, kev ntxuav, thiab cov sijhawm teem sijhawm nyob ib puag ncig kev ua haujlwm ntawm lub Hoobkas, uas qhia txog qhov xav tau ntawm kev ntsuas qhov ceev tiag tiag hauv kev tsim cov polyethylene. Qhov no ua kom ntseeg tau tias cov ntsuas tseem nyob ruaj khov - txawm tias ntsuas qhov ceev hauv kev tshawb fawb txog kev sim lossis lub Hoobkas tsim cov polyethylene uas muaj peev xwm loj.
Kev nqis peev rau hauv lub tshuab ntsuas qhov ceev ntawm cov kua nplaum uas tau hloov kho raws li qhov xav tau yog qhov tsim nyog rau kev siv tshuab, tsis yog kev nplua nuj, hauv kev tsim cov polyethylene niaj hnub no. Kev xaiv thiab kev hloov kho lub tshuab ntsuas kom raug yog cov kauj ruam tseem ceeb rau kev ua kom tau txiaj ntsig ntau tshaj plaws, tswj cov kua nplaum uas muaj ntau hauv kev tsim cov polyethylene uas muaj ntau qhov ceev, thiab ua tiav kev ua haujlwm zoo thoob plaws hauv lub Hoobkas.
Kev Cuam Tshuam ntawm Kev Tswj Xyuas Qhov Ceev ntawm Slurry rau Qhov Zoo ntawm Cov Khoom Polyethylene Uas Muaj Qhov Ceev
Kev ntsuas qhov ceev ntawm cov slurry uas nruj thiab siv sijhawm tiag tiag yog qhov tseem ceeb rau kev tsim cov polyethylene uas muaj qhov ceev siab (HDPE) nrog cov qib uas tau teem tseg thiab qhov hnyav molecular meej. Thaum lub sijhawm tsim cov polyethylene, qhov kev sib sau ua ke thiab kev faib tawm ntawm cov khoom polymer khov kho hauv cov reactor slurry yog txuas ncaj qha rau kev tsim thiab kev loj hlob ntawm cov saw polymer. Kev tswj qhov ceev no hauv cov kev txwv nruj ua kom cov polymerization ua mus ntxiv ntawm qhov nrawm tswj tau, txhawb nqa qhov kev faib tawm qhov hnyav molecular xav tau (MWD), uas txiav txim siab cov khoom siv kawg thiab kev ua raws li cov lus qhia.
Kev hloov pauv ntawm cov slurry density cuam tshuam rau ob qho tib si polymer microstructure thiab molecular architecture. Cov slurry density siab dua feem ntau ua rau cov khoom HDPE nrog kev txo qis o thiab compaction, tsim cov resins nrog cov qauv khoom sib xws thiab MWD zoo tshaj plaws rau kev ua haujlwm kho tshuab. Cov ntaub ntawv sim siab heev los ntawm cov chaw tsim khoom polyethylene kev lag luam lees paub tias kev tswj hwm lub sijhawm tiag tiag ntawm slurry density ua rau qhov sib kis ntawm cov khoom, txo qis kev tsim cov resin tawm-spec thiab txhim kho kev sib xws ntawm pawg-rau-pawg. Kev ntsuas inline, tshwj xeeb tshaj yog siv ultrasonic slurry density meters, ua rau qib no ntawm kev raug yam tsis muaj kev kuaj tes, yog li ua rau kev ntseeg siab ntawm cov txheej txheem thiab cov khoom zoo.
Kev tswj cov slurry density meej muaj feem cuam tshuam ncaj qha rau ntau yam khoom tseem ceeb ntawm HDPE:
- Lub zog:Cov khoom me me polymer uas tsim nyob rau hauv cov slurry density ruaj khov qhia tau tias muaj kev cuam tshuam ntau dua thiab lub zog tensile. Qhov no tseem ceeb heev rau cov ntawv thov xws li cov kav dej kev lag luam thiab cov khoom siv ntsuas siab, qhov twg cov khoom tsis ua haujlwm tuaj yeem muaj kev nyab xeeb thiab kev cuam tshuam nyiaj txiag.
- Kev Ua Tau:Cov yam ntxwv rheological—tseem ceeb rau extrusion lossis tshuab molding—yog tswj hwm los ntawm cov qauv me me ntawm cov resin, nws tus kheej yog ib qho haujlwm ntawm kev tswj thiab tswj cov slurry density. Cov xwm txheej slurry ruaj khov ua rau cov polymers nrog cov ntsuas dej ntws tau kwv yees (MFI), txo qhov kev pheej hmoo ntawm kev ua tsis ruaj khov hauv kev tsim khoom hauv qab.
- Kev Ua Raws Cai:Cov qauv xws li ASTM D3350 teeb tsa cov kev cai nruj rau lub zog, kev tawv, thiab qhov hnyav ntawm cov molecular. Kev ua tau raws li cov no tsuas yog ua tau thaum kev tswj qhov ceev yog ob qho tib si tas mus li thiab raug, uas ua rau muaj peev xwm ua tau los ntawm cov ntsuas ceev ultrasonic niaj hnub no.
Ib qho teeb meem tseem ceeb hauv kev ua haujlwm hauv cov chaw tsim khoom polyethylene yog kev tsim khoom yooj ywm - muaj peev xwm hloov kho sai rau ntau hom HDPE resin yam tsis muaj sijhawm poob lossis pov tseg loj. Ntawm no, kev ntseeg tau thiab qhov ceev ntawm kev tswj qhov ceev ntawm slurry ua rau muaj kev ywj pheej. Los ntawm kev saib xyuas thiab kho qhov chaw teeb tsa qhov ceev, cov neeg ua haujlwm tuaj yeem kho qhov hnyav molecular thiab MWDs los tsim cov qib uas haum rau ntau yam kev siv, los ntawm geomembranes mus rau lub hau fwj. Qhov kev sib txuas ncaj qha ntawm kev ntsuas qhov ceev thiab kev hloov qib txhawb nqa kev tsim kho tshiab hauv kev lag luam, ua rau cov nroj tsuag tuaj yeem ua haujlwm rau cov kev xav tau ntawm kev ua lag luam thaum tswj kev siv cov peev txheej thiab cov nqi.
Lonnmeter, ua ib lub chaw tsim khoom ntawm cov ntsuas qhov ceev ntawm cov slurry (siv cov thev naus laus zis ultrasonic), daws qhov xav tau ntawm kev ntsuas qhov ceev tiag tiag nrog cov cuab yeej ruaj khov, muaj kev nyab xeeb, thiab kev saib xyuas tsawg kawg nkaus uas tsim los rau cov txheej txheem polyethylene uas nyuaj. Kev ntseeg tau thiab qhov tseeb ntawm cov ntsuas no ua rau cov nroj tsuag siv tau tag nrho cov txiaj ntsig ntawm kev tswj qhov ceev ntawm slurry - xa cov qib polymer uas ua tau raws li cov qauv kev lag luam thiab daim ntawv thov nruj tshaj plaws.
Kev Sib Koom Tes Ntsuas Qhov Ceev rau Kev Txhim Kho Cov Txheej Txheem
Kev koom ua ke ntawm kev ntsuas qhov ceev ntawm cov slurry tiag tiag rau hauv cov reactors slurry yog qhov tseem ceeb rau kev ua kom zoo dua cov txheej txheem tsim polyethylene. Cov ntaub ntawv txuas ntxiv thiab raug ntawm cov slurry density ua rau muaj kev koom ua ke nrog kev tswj hwm cov txheej txheem siab heev, suav nrog kev tswj hwm qauv kwv yees (MPC), cov tes hauj lwm neural artificial, thiab cov tswv yim raws li fuzzy PID. Cov txheej txheem no vam khom cov lus teb ze li ntawm tam sim ntawd los ntawm cov cuab yeej inline xws li ultrasonic slurry density meters, uas muab kev taug qab tsis muaj kev cuam tshuam, kev taug qab meej ntawm cov slurry density hauv reactors thiab pipelines.
Kev tsim cov polyethylene uas muaj cov khoom ntom ntom ntau yuav tsum tau kev tswj kom meej ntawm qhov ceev ntawm cov slurry kom ntseeg tau tias cov polymer zoo sib xws, tshwj xeeb tshaj yog thaum lub sijhawm hloov qib thiab thaum cov khoom noj hloov pauv. Cov txheej txheem tswj tsis siv neeg txhais cov kev ntsuas qhov ceev tiag tiag los kho cov txheej txheem (monomer ntws, qhov ceev ntawm agitator, qhov kub) hauv milliseconds, txo qhov lag pom hauv kev kuaj offline lossis qeeb. Cov txheej txheem siab heev, siv cov ntaub ntawv los ntawm cov khoom siv xws li Lonnmeter inline ultrasonic slurry density meters, kho cov lus teb kom txo qis qhov sib txawv ntawm cov ntsiab lus teeb tsa. Piv txwv li, Smith fuzzy PID controllers refined los ntawm cov txheej txheem genetic tau ua pov thawj tias 35.9% txo qis hauv lub sijhawm teb thiab 36.6% sai dua piv rau cov kev tswj PID ib txwm muaj, ncaj qha txhim kho cov txheej txheem resilience thiab cov khoom sib xws.
Kev tswj hwm qhov ceev ntawm cov slurry kuj tseem ua rau muaj kev txhim kho zoo hauv kev ua haujlwm zoo thiab kev siv cov khoom siv. Los ntawm kev txo qis qhov ceev oscillations:
- Cov reactors ua tiav kev ua haujlwm ruaj khov sai dua tom qab muaj kev cuam tshuam.
- Cov khoom tsim tawm ntawm cov polymer nce ntxiv vim muaj tsawg dua cov khoom tsis raws li qhov xav tau.
- Kev pov tseg zog raug txo kom tsawg, vim tias kev them nyiaj ntau dhau hauv qhov kub, kev ntxhov siab, lossis kev pub mov raug txo kom tsawg.
Piv txwv li, hauv tus qauv tswj kev kwv yees, kev koom ua ke ntawm cov ntaub ntawv ceev ntawm ultrasonic slurry tau pom tias txhim kho lub peev xwm ntawm lub reactor los taug kev hloov pauv qib nrog kev pov tseg tsawg kawg ntawm ethylene thiab catalyst. Kev sib xws ntawm cov slurry density kuj tso cai rau kev siv cov compressors thiab twj tso kua mis zoo dua, txo qis kev siv zog tshwj xeeb rau ib metric ton ntawm cov polyethylene siab.
Cov txiaj ntsig txuas mus rau kev txuag nqi thiab kev tswj hwm kev pheej hmoo. Cov lus teb rov qab tiag tiag txo qhov yuav tshwm sim ntawm kev tsim khoom tsis raws li qhov tau teev tseg, txo qis kev ua haujlwm rov qab tom qab thiab cov khoom siv raw pov tseg. Kev kuaj pom thaum ntxov ntawm qhov tsis zoo - xws li qhov kub nce sai, qhov ceev nce siab, lossis lub twj tso kua mis cavitation - tso cai rau kev cuam tshuam sai, txo qhov tsis tau npaj tseg thiab kev pheej hmoo ntawm reactor chim siab. Kev tshawb fawb simulation ntawm cov reactors hauv kev lag luam txhawb nqa cov kev tshawb pom no: kev saib xyuas qhov ceev ceev, kev ua haujlwm tas mus li ua rau muaj kev txo qis ntawm cov yam ntxwv pheej hmoo thiab kev cuam tshuam tsis tau npaj tseg, lees paub qhov tseem ceeb ntawm cov lus teb rov qab tiag tiag rau kev ua haujlwm ntawm cov nroj tsuag muaj kev nyab xeeb, txhim khu kev qha.
Los ntawm qhov pom ntawm kev ruaj khov, kev ntsuas qhov ntom ntawm cov slurry tas mus li pab txhawb rau kev txo cov khib nyiab thiab kev siv cov peev txheej kom zoo. Kev tswj hwm lub sijhawm tiag tiag ua kom ntseeg tau tias tsuas yog cov khoom siv ua tau raws li cov lus qhia nruj me ntsis tawm hauv lub Hoobkas tsim polyethylene, txwv ob qho tib si cov ntim pov tseg thiab kev cuam tshuam rau ib puag ncig. Kev tsim cov cua sov pov tseg thiab kev siv cov kuab tshuaj kuj tau ua kom zoo dua, txhawb nqa lub hom phiaj dav dav ntawm kev tsim cov polymer ruaj khov.
Cov kev daws teeb meem inline, xws li Lonnmeter cov ntsuas qhov ceev ntawm cov slurry, xa cov kev xav tau ntawm kev ntsuas qhov ceev tiag tiag nrog kev hloov pauv uas xav tau rau ntau yam kev teeb tsa reactor thiab ntau yam kev ua haujlwm. Raws li kev ua haujlwm zoo, kev ntseeg siab, thiab kev ruaj khov ua qhov tseem ceeb hauv kev tsim cov polymer, kev koom ua ke ntawm kev saib xyuas thiab tswj cov slurry density siab heev sawv cev rau lub hauv paus rau kev sib tw thiab kev ua haujlwm siab polyethylene.
Cov Lus Nug Feem Ntau (FAQs)
Dab tsi yog qhov tsim nyog ntawm kev ntsuas qhov ceev tiag tiag hauv cov txheej txheem slurry polyethylene tsim tawm?
Kev ntsuas qhov ceev tiag tiag yog qhov tseem ceeb hauv cov txheej txheem slurry rau kev tswj cov xwm txheej reactor thiab xyuas kom meej tias muaj kev sib xws ntawm cov khoom sib xyaw ua ke hauv cov txheej txheem tsim polyethylene. Kev ntsuas tas li tso cai rau kev tawm tswv yim tam sim ntawd thiab kev hloov kho sai, tswj cov kev ntsuas xws li cov khoom khov thiab cov ntsuas dej ntws (MFI). Kev tswj hwm no yog qhov tseem ceeb rau kev tswj cov khoom tshwj xeeb, txo qis qhov sib txawv zoo, thiab txo cov khoom siv pov tseg. Yog tsis muaj cov ntaub ntawv tiag tiag, cov chaw soj nstuam tsis tuaj yeem muab cov ntaub ntawv nkag siab raws sijhawm, ua rau muaj kev pheej hmoo ntawm kev ua tsis tiav thiab tsis ua haujlwm zoo. Kev kuaj pom thaum ntxov ntawm kev hloov pauv los ntawm qhov ceev tiag tiag pab tiv thaiv kev ua qias tuaj thiab kev thaiv ntawm reactor, ua kom cov txheej txheem muaj kev nyab xeeb thiab tsis muaj kev cuam tshuam. Hauv kev tsim cov polyethylene siab, cov kev ntsuas no yog qhov tseem ceeb rau kev xa cov khoom sib xws hauv cov ntawv thov uas xav tau xws li cov kav dej thiab ntim khoom.
Lub ntsuas qhov ntom ntawm cov slurry txhim kho cov txheej txheem tsim cov polyethylene li cas?
Lub ntsuas qhov ceev ntawm cov slurry muab kev saib xyuas tas mus li, hauv kab ntawm cov slurry density ntawm lub reactor. Qhov no ua rau cov neeg teb xov tooj tuaj yeem kho qhov catalyst thiab monomer dosing raws li kev tawm tswv yim tiag tiag, ua rau muaj kev sib xyaw ua ke ntawm cov khoom polymer thiab txo qhov kev pheej hmoo ntawm cov khoom tsis raws li qhov xav tau. Kev kho kom zoo dua qub txo cov khib nyiab ntawm cov khoom noj thiab ua kom zoo dua cov nqi hloov pauv. Cov neeg teb xov tooj kuj tseem pom kev hloov pauv hauv kev ua haujlwm ntawm lub reactor ua ntej muaj kev kub ntxhov loj, tso cai rau kev saib xyuas thiab kev hloov kho ua ntej. Piv txwv li, kev nyeem qhov ceev nce tuaj yeem ua rau muaj kev sib sau ua ke ntawm cov khoom me me, ua rau muaj kev cuam tshuam kom tsis txhob muaj reactor fouling. Cov ntaub ntawv tas mus li los ntawm lub ntsuas txhim khu kev qha tsis yog tsuas yog txhawb nqa kev ua haujlwm zoo xwb tab sis kuj tseem ua raws li txoj cai los ntawm kev tswj hwm cov txheej txheem pob tshab thiab kev taug qab.
Vim li cas ho xaiv lub ntsuas qhov ntom ntawm cov dej ntws ultrasonic rau kev tsim cov polyethylene uas muaj cov khoom ntom ntom ntau?
Cov ntsuas qhov ceev ntawm cov kua dej siv cov suab nthwv dej rau kev ntsuas qhov ceev, txo cov teeb meem cuam tshuam nrog cov ntsuas nuclear ib txwm muaj. Cov ntsuas no ua haujlwm tsis cuam tshuam, txo qhov hnav thiab tshem tawm qhov kev pheej hmoo ntawm kev ua qias tuaj. Hauv cov chaw HDPE - feem ntau yog cov khoom siv sib txhuam thiab cov tshuaj lom neeg - cov ntsuas ultrasonic tswj tau qhov tseeb thiab ruaj khov rau lub sijhawm ntev. Lawv txoj kev tiv thaiv kev tawm tsam tshuaj lom neeg thiab tsis muaj cov khoom txav mus los ua rau tsis tas yuav saib xyuas ntau. Cov kev ntsuas tiag tiag, tsis muaj kev txav mus los yog qhov tseem ceeb rau kev ua kom zoo dua qub, ua rau muaj kev kho tam sim ntawd. Cov ntsuas ultrasonic kuj txhawb nqa cov hom phiaj ib puag ncig thiab kev nyab xeeb los ntawm kev zam cov chaw muaj radioactive, txo cov kev ua raws li txoj cai, thiab ua raws li cov ntsiab cai ESG.
Thaum twg yuav tsum muaj lub ntsuas qhov ceev ntawm cov slurry uas tau hloov kho raws li qhov xav tau, thiab kuv yuav xaiv lub chaw tsim khoom li cas?
Lub ntsuas qhov ceev ntawm cov slurry uas tau kho tshwj xeeb yog qhov tsim nyog thaum cov cuab yeej txheem tsis tuaj yeem ua tau raws li cov txheej txheem tshwj xeeb - xws li kev ua haujlwm siab tsis zoo, cov qauv reactor tsis zoo, lossis cov reactors sim cov catalysts tshiab. Hauv cov xwm txheej no, cov kev daws teeb meem ntsuas tshwj xeeb daws teeb meem kev sib koom ua ke lossis kev xav tau ib puag ncig, ua kom ntseeg tau tias cov ntaub ntawv raug thiab txhim khu kev qha txawm tias muaj cov txheej txheem nyuaj. Thaum xaiv lub chaw tsim khoom, muab qhov tseem ceeb rau kev txawj ntse hauv cov chaw tsim khoom polyethylene, kev ntseeg tau ntawm cov thev naus laus zis ntsuas, thiab lub peev xwm los muab cov ntsuas uas lub cev thiab hluav taws xob sib xyaw nrog koj cov kab ke tswj hwm uas twb muaj lawm. Lonnmeter, tsom mus rau cov khoom siv kho vajtse meter es tsis yog cov kab ke lossis software, yog ib qho piv txwv ntawm txoj hauv kev tshwj xeeb no, muab cov kev daws teeb meem kho vajtse tsim rau cov ntawv thov polymerization uas xav tau. Xav txog kev saib xyuas mus sij hawm ntev, kev xav tau calibration, thiab kev hloov pauv mus rau cov xwm txheej txheej txheem hloov pauv thaum ntsuas cov neeg muab khoom muaj peev xwm.
Dab tsi txawv ntawm cov polyethylene uas muaj cov khoom ntom ntom uas tsim los ntawm cov txheej txheem slurry?
Cov polyethylene uas muaj zog ntau los ntawm cov txheej txheem slurry qhia txog lub zog zoo tshaj plaws, kev tiv thaiv kab nrib pleb qeeb, thiab kev ruaj khov tshuaj lom neeg. Cov khoom no tshwm sim los ntawm kev tswj hwm qhov tseeb ntawm cov xwm txheej tshuaj tiv thaiv, suav nrog cov slurry density, uas cuam tshuam rau cov qauv molecular polymer, crystallinity, thiab branching. Kev ntsuas slurry density tas li ua kom muaj kev faib tawm zoo, tsim HDPE uas ua tau raws li cov kev thov siv rau cov kav dej, cov thawv, thiab cov yeeb yaj kiab kev siv tshuab. Piv txwv li, cov txheej txheem kev tsim kho tshiab xws li cov catalysts siab heev thiab cov xwm txheej ntws tswj hwm zoo tso cai rau kev kho cov khoom microstructural kom ua tiav lub zog tensile siab dua thiab kev ua haujlwm ntev. Kev tswj hwm qhov ceev tas mus li, txhawb nqa los ntawm cov ntsuas hauv kab txhim khu kev qha, yog lub hauv paus rau qib no ntawm kev rov ua dua, cov khoom lag luam zoo hauv cov nroj tsuag polyethylene niaj hnub no.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-17-2025
