Kev Tswj Xyuas Ethylene Concentration hauv Kev Tsim Roj Hmab
Cov roj hmab ua los ntawm cov khoom siv roj av yog cov elastomer uas tib neeg tsim los ntawm cov khoom siv roj av. Nws feem ntau siv rau cov ntawv thov xws li cov khoom siv hauv tsheb - log tsheb, qhov rooj thiab qhov rai. Kev rho tawm cov monomer nyoos suav nrog kev ua kom cov roj no zoo - los ntawm cov txheej txheem xws li naphtha cracking thiab distillation - los ntxuav cov monomers uas xav tau, vim tias cov pa phem yuav cuam tshuam rau cov tshuaj polymerization tom qab. Cov monomers uas tau ntxuav feem ntau muaj qhov huv ntawm 99.5% lossis siab dua, tso lub hauv paus rau kev tsim cov roj hmab.
Cov kauj ruam tseem ceeb ntawm kev tsim khoom yog polymerization: cov monomers huv si tau sib xyaw nrog cov initiators thiab faib rau hauv dej lossis yaj rau hauv cov organic solvents. Cov txheej txheem no hloov cov monomer molecules me me mus rau hauv cov saw polymer ntev, ua rau cov roj hmab nyoos nrog cov roj hmab hydrocarbon cov ntsiab lus ntawm 80-90%. Ib kauj ruam tseem ceeb tom qab yog vulcanization, qhov twg sulfur lossis peroxides raug ntxiv thiab cua sov los ua cov kab sib txuas ntawm cov saw polymer - cov roj hmab unvulcanized mos thiab nplaum dhau los siv tsis tau. Cov roj hmab vulcanized thaum xub thawj muaj cov polymer purity ntawm 95-98%, tab sis rau cov ntawv thov ua haujlwm siab, yuav tsum tau ua kom huv si ntxiv.
Qhov nyuaj hauv kev ntsuas qhov concentration ntawm Ethylene
Hauv kev tsim cov roj hmab, tshwj xeeb tshaj yog rau ethylene-propylene-diene monomer (EPDM) lossis ethylene-propylene roj hmab (EPR/EPM), kev ntsuas qhov tseeb ntawm ethylene concentration yog qhov tseem ceeb rau kev tswj hwm polymerization kinetics, xyuas kom meej tias cov khoom polymer sib xws thiab txo cov khib nyiab.
Kev Txheeb Xyuas Txog Cov Txheej Txheem Ua Roj Hmab
Kev tsim cov roj hmab rau EPDM / EPR feem ntau muaj xws li:
Kev xa khoom nojEthylene thiab propylene (thiab diene rau EPDM) raug pub ua cov pa roj rau hauv lub reactor, feem ntau yaj rau hauv cov kuab tshuaj lossis khaws cia rau hauv cov roj / kua theem.
Cov Tshuaj Reactor PolymerizationIb lub CSTR lossis lub voj voog reactor qhov twg monomers tshuaj tiv thaiv nrog catalysts ntawm 30-90 ° C thiab 10-30 bar, tsim cov saw polymer.
Kev Rov Qab Los ntawm Cov kuab tshuaj / MonomerCov monomers uas tsis tau ua haujlwm raug stripped, rov ua dua tshiab, lossis purged, feem ntau ntawm devolatilization lossis flash drums.
Kev Ua TiavCov polymer raug cais, ntxuav, thiab extruded, nrog rau kev kuaj xyuas zoo rau qhov ceev thiab Mooney viscosity.
Ethylene ua haujlwm ua ib qho monomer tseem ceeb hauv kev tsim roj hmab, ib qho khoom siv tseem ceeb hauv kev lag luam petrochemical. Qhov concentration ntawm cov monomer no hauv lub thawv tshuaj tiv thaiv ncaj qha qhia txog kinetics ntawm polymerization thiab, yog li ntawd, cov khoom siv lub cev thiab tshuaj ntawm cov polymer kawg, xws li qhov hnyav molecular thiab qhov kub yaj. Thaum qhov concentration ntawm ethylene tsis raug tswj hwm meej, cov polymer tshwm sim tuaj yeem ua rau muaj kev sib cais tsis tswj hwm, ua rau muaj kev faib tawm ntau dua ntawm qhov hnyav molecular thiab qhov zoo ntawm cov khoom kawg tsis sib xws. Piv txwv li, muaj kev sib raug zoo ntawm kev nce siab ntawm ethylene thiab cov ntsiab lus ethylene hauv cov copolymers tsim tawm, uas ua rau lawv qhov kub yaj.
Qhov kev hloov pauv ntawm qhov zoo ntawm cov khoom no muaj kev cuam tshuam ncaj qha thiab pom tseeb rau nyiaj txiag. Yuav kom ntseeg tau tias txhua pawg khoom tsim tawm ua tau raws li qhov tsawg kawg nkaus ntawm cov lus qhia zoo, cov neeg ua haujlwm feem ntau siv txoj kev hu ua "kev muab khoom zoo". Qhov no suav nrog kev tsim cov khoom uas muaj cov yam ntxwv zoo uas tshaj qhov yuav tsum tau ua, ua rau muaj kev tsim kho ntau dhau los them rau kev ntsuas thiab tswj kev hloov pauv. Kev coj ua no, thaum ua kom ntseeg tau tias cov khoom txais tau, ua rau muaj kev siv cov khoom siv raw ntau ntxiv, kev siv hluav taws xob ntau dua, thiab lub sijhawm voj voog ntev dua, tag nrho cov no txhais tau tias muaj cov nqi ua haujlwm ntau thiab cov nyiaj tau los tsawg dua. Lub hauv paus ntawm qhov teeb meem no tsis yog qhov tsis zoo hauv cov txheej txheem tshuaj nws tus kheej, tab sis qhov tsis txaus ntawm kev ntsuas thiab kev tswj hwm lub sijhawm tiag tiag uas tswj hwm nws, ua rau muaj kev ua haujlwm tsis zoo dua li kev ua haujlwm ua ntej.
Tham nrog peb tus kws tshaj lij kom paub txog koj cov kev xav tau ua haujlwm.
Kev Ntsuas Kev Ntsuas Concentration Lonnmeter Txuas Ntxiv Mus
Kev tshuaj xyuas hauv chaw kuaj mob uas tsis siv neeg ib txwm muaj tsis haum rau cov kev xav tau niaj hnub no. Feem ntau lawv ua rau kev tshuaj xyuas qeeb thiab kev ntsuas ntau zaus. Hauv lwm lo lus, cov ntaub ntawv uas cov neeg ua haujlwm tau txais yog ib daim duab ntawm cov txheej txheem los ntawm ob peb feeb lossis txawm tias ob peb teev. Kev tsis txaus cov ntaub ntawv ua rau muaj kev hloov pauv zoo tom qab lawv twb tshwm sim lawm thiab tej zaum tom qab tag nrho cov khoom raug puas tsuaj, ua rau muaj kev pov tseg kim thiab rov ua haujlwm dua.
Lonnmeter tau tsim khoethylene sensor concentrationkom paub txog kev ntsuas qhov concentration kom raug hauv lub sijhawm tiag tiag hauv cov txheej txheem tshuaj lom neeg tas mus li. Nws ua haujlwm zoo txawm tias nyob hauv ib puag ncig uas hloov pauv sai; Lub ntsuas ethylene concentration online yog ib qho cuab yeej qib kev lag luam uas tsim los daws cov kev xav tau ntawm cov txheej txheem tshuaj lom neeg. Nws siv cov thev naus laus zis siab heev - lub teeb liab acoustic los ua kom lub diav rawg hlau zoo siab, ua rau lub diav rawg co ntawm nws qhov zaus resonant ntuj. Qhov tseem ceeb, qhov zaus resonant no qhia txog kev sib raug zoo ncaj qha nrog qhov ceev ntawm cov kua uas lub diav rawg kov. Tom qab ntawd, qhov ceev ntawm cov kua tuaj yeem txiav txim siab los ntawm kev tshuaj xyuas zaus - nrog rau kev them nyiaj kub kom tiv thaiv qhov kub thiab txias hauv lub kaw lus, kom ntseeg tau tias qhov ntsuas raug.
Ethylene Concentration Meter
Rau kev ntsuas qhov concentration tas mus li hauv cov kav dej lossis cov tank
Cov Qauv ntawm Tuning Fork
Cov Chaw Teeb tsa hauv Cov Txheej Txheem Sib Xyaws Roj Hmab
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Cov Kab Noj Monomer: Muab lub sensor tso rau hauv lub raj xa dej ethylene tom qab compressor kom paub tseeb tias nws huv thiab kho qhov dosing.
Reactor Inlet: Nruab rau ntawm qhov chaw sib tov monomer-solvent nrog hexane/propylene kom tswj tau cov ethylene uas yaj.
Hauv-Reactor: Tso rau hauv CSTR ze ntawm lub agitator rau kev tswj hwm polymerization tiag tiag.
Kab Rov Siv Dua: Nrhiav ntawm qhov hluav taws xob ntawm lub nruas kom ua kom zoo dua qhov rov qab tau ethylene uas tsis tau ua haujlwm.
Kab Qhov Cua: Muab tso rau hauv txoj kab purge/vent kom saib xyuas cov pa phem thiab xyuas kom muaj kev nyab xeeb.
Kawm Paub Ntxiv Txog Peb Cov Khoom
Cov txiaj ntsig los ntawm Inline Ethylene Concentration Meter
●Kev saib xyuas tiag tiag ua kom muaj kev tswj hwm ethylene meej, txhim kho qhov zoo ntawm cov polymer thiab txo cov kev tsis lees txais ntau ntau.
●Tshem tawm kev noj tshuaj ntau dhau, txuag ethylene.
●Txhim kho kev rov qab los ntawm monomer hauv cov kab rov ua dua tshiab.
●Tshawb pom qhov tsis zoo rau kev txij nkawm ua ntej.
●Tsis tas yuav saib xyuas ntau.
