Ulawulo loXinzelelo lwe-Ethylene kwiNdibaniselwano yeRabha
Irabha yokwenziwa yi-elastomer eyenziwe ngumntu eveliswa ziimveliso zepetroleum. Ihlala isetyenziselwa usetyenziso olufana namacandelo eemoto -- amathayara, iingcango kunye neefestile. Ukukhupha i-monomer eluhlaza kubandakanya ukucocwa kwezi nxalenye zeoyile -- ngeenkqubo ezifana nokuqhekeka kwe-naphtha kunye ne-distillation -- ukucoca ii-monomers ekujoliswe kuzo, njengoko ukungcola kungaphazamisa impendulo elandelayo ye-polymerization. Ii-monomers ezihlanjululweyo eziphumayo zihlala zinobumsulwa be-99.5% okanye ngaphezulu, zibeka isiseko sokwenziwa kwerabha.
Inyathelo eliphambili lemveliso kukwenziwa kwepolymerization: ii-monomers ezicociweyo zixutywa nee-initiators kwaye zisasazwe emanzini okanye zinyibilikiswe kwii-organic solvents. Le nkqubo iguqula ii-monomer molecules ezincinci zibe zii-polymer chain ezinde, zivelise irabha ekrwada enomxholo we-rubber hydrocarbon we-80-90%. Inyathelo elilandelayo elibalulekileyo yi-vulcanization, apho i-sulfur okanye ii-peroxides zongezwa kwaye zifudunyezwe ukuze zenze ii-cross-links phakathi kwee-polymer chain—irabha engavuthwanga ithambile kakhulu kwaye inamathela ukuba iluncedo. Irabha evuthwanga ekuqaleni inobumsulwa be-polymer be-95-98%, kodwa kwizicelo zokusebenza okuphezulu, kufuneka ukucoca okungakumbi.
Ubunzima ekulinganiseni uxinizelelo lwe-ethylene
Kwi-synthesis yerabha, ngakumbi kwi-ethylene-propylene-diene monomer (EPDM) okanye i-ethylene-propylene rubber (EPR/EPM), ukulinganisa ngokuchanekileyo ukuxinana kwe-ethylene kubalulekile ekulawuleni i-polymerization kinetics, ukuqinisekisa iipropati ze-polymer ezihambelanayo kunye nokunciphisa inkunkuma.
Isishwankathelo seNkqubo yokwenziwa kweRubber
Ukwenziwa kwerabha ye-EPDM/EPR kudla ngokubandakanya:
Ukuhanjiswa kweFeedstockI-ethylene kunye nepropylene (kunye ne-diene ye-EPDM) zifakwa njengeegesi kwi-reactor, zihlala zinyibilikiswa kwisinyibilikisi okanye zigcinwe kwizigaba zegesi/ulwelo.
I-Polymerization Reactor: I-CSTR okanye i-reactor ye-loop apho ii-monomers zisabela khona ngee-catalysts kwi-30-90°C kunye ne-10-30 bar, zenze imixokelelwane ye-polymer.
Ukubuyiselwa kweSolvent/MonomerIimonomer ezingaphendulwanga ziyasuswa, ziphinde zisetyenziswe, okanye zicocwe, ngokudla ngokudilizwa okanye iidrama ezikhawulezayo.
Ukugqiba: I-Polymer iyahlulwa, ihlanjwe, ize ikhutshwe, kujongwe umgangatho woxinano kunye nokuxinana kweMooney.
I-ethylene isebenza njenge-monomer ebalulekileyo kwi-rubber synthesis, into ebalulekileyo kwishishini le-petrochemical. Uxinzelelo lwale monomer ngaphakathi kwi-reaction vessel lulawula ngokuthe ngqo i-kinetics ye-polymerization kwaye, ngenxa yoko, iipropati zomzimba nezekhemikhali ze-polymer yokugqibela, ezinje ngobunzima be-molecular kunye nobushushu bokunyibilika. Xa uxinzelelo lwe-ethylene lungalawulwa ngokuchanekileyo, i-polymer ephumayo inokubonisa i-polydispersity engalawulwayo, ekhokelela ekusasazweni ngokubanzi kobunzima be-molecular kunye nomgangatho wokugqibela wemveliso ongaguqukiyo. Umzekelo, kukho ubudlelwane obuchanekileyo phakathi koxinzelelo lwe-ethylene olukhulayo kunye nomxholo we-ethylene kwi-copolymers eziveliswayo, nto leyo echaphazela ubushushu bazo bokunyibilika.
Olu tshintsho kumgangatho wemveliso lunempembelelo ethe ngqo nebonakalayo kwezemali. Ukuqinisekisa ukuba yonke ibhetshi eyenziweyo ihlangabezana neemfuno zomgangatho ezisezantsi, abaqhubi badla ngokusebenzisa indlela eyaziwa ngokuba yi "quality giveaway". Oku kubandakanya ukuvelisa ngabom imveliso eneempawu zomgangatho ezidlula iinkcukacha ezifunekayo, oku kuthetha ukuba inkqubo iyasebenza kakhulu ukuze kulungiswe uhlengahlengiso lokulinganisa nokulawula. Olu qheliso, ngelixa luqinisekisa ukwamkelwa kwemveliso, lukhokelela ngokuthe ngqo ekusetyenzisweni kwezinto eziluhlaza okongeziweyo, ukusetyenziswa kwamandla aphezulu, kunye namaxesha omjikelo ongezelelweyo, konke oku kuthetha ukuba iindleko zokusebenza ziphezulu kwaye kuncitshiswe inzuzo. Eyona nto iphambili kule ngxaki asikokusilela kwinkqubo yeekhemikhali ngokwayo, kodwa kukusilela kwindlela yokulinganisa ngexesha langempela kunye neluphu yokulawula eyilawulayo, ekhokelela kwindlela yokusebenza esebenzayo kunokuba ibe yindlela yokusebenza ngokukhawuleza.
Thetha nengcali yethu ukuze uhlole iimfuno zakho zokusebenza.
Isisombululo Sokulinganisa Uxinzelelo lweLonnmeter Eqhubekayo
Uhlalutyo lwendabuko olusekelwe kwilebhu engaxhunyiwe kwi-intanethi alufanelekanga kwiimfuno eziguquguqukayo neziqhubekayo zomgca wemveliso wanamhlanje. Zihlala zibangela ukubambezeleka kohlalutyo kunye nokulinganisa okuphindaphindiweyo okudinga umsebenzi. Ngamanye amazwi, idatha efunyanwa ngabaqhubi yinkcazo yenkqubo ukusuka kwimizuzu okanye iiyure. Ukusilela kolwazi kubangela ukuphambuka komgangatho emva kokuba sele kwenzekile kwaye mhlawumbi emva kokuba iqela lonke liye lachaphazeleka, nto leyo ekhokelela kwinkcitho ebiza kakhulu kunye nokulungiswa kwakhona.
ILonnmeter ifake ubunjineliuxinaniso lwe-sensor ye-ethyleneukuze kufezekiswe umlinganiselo ochanekileyo woxinzelelo ngexesha langempela kwinkqubo eqhubekayo yeekhemikhali. Isebenza kakuhle nakwimeko etshintsha ngokukhawuleza; Imitha yoxinzelelo lwe-ethylene ekwi-intanethi sisixhobo esikumgangatho weshishini esenzelwe ukujongana neemfuno zokulinganisa ezichanekileyo zeenkqubo zeekhemikhali. Isebenzisa ubuchwepheshe obuphambili bokubona -- umthombo wesignali ye-acoustic ukuvusa ifolokhwe yokulungisa yesinyithi, okubangela ukuba ifolokhwe ingcangcazele kwisantya sayo sendalo sokuphendula. Okuphawulekayo kukuba, olu xinzelelo lokuphendula lubonisa ulwalamano oluthe ngqo noxinano lolwelo oludibana nefolokhwe yokulungisa. Emva koko, uxinano lolwelo lunokufunyanwa ngohlalutyo lwamaza—kunye nokulungiswa kobushushu okuphunyeziweyo ukulwa nokutshintsha kobushushu ngaphakathi kwenkqubo, ukuqinisekisa ukuchaneka komlinganiselo.
Ulwakhiwo lweForoko yokuLungisa
Ukufakwa kokufakwa kwiNkqubo yokwenziwa kweRubber
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Umgca Wokutya weMonomer: Beka i-sensor kwi-ethylene feed pipeline post-compressor ukuqinisekisa ubunyulu kunye nokulungisa idosi.
I-Reactor Inlet: Faka kwindawo yokuxuba i-monomer-solvent kunye ne-hexane/propylene ukulawula i-ethylene enyibilikisiweyo.
I-In-Reactor: Indawo ngaphakathi kwe-CSTR kufutshane ne-agitator yolawulo lwe-polymerization yexesha langempela.
Umgca Wokuphinda Usebenzise: Fumana kwindawo yokukhupha idrama yeflash ukuze uphucule ukubuyiswa kwe-ethylene engaphendulwanga.
Umgca wokungenisa umoya: Faka kwindawo yokucoca/yokungenisa umoya ukuze ujonge ukukhutshwa komoya kwaye uqinisekise ukhuseleko.
Funda Okungakumbi malunga neeMveliso zethu
Iingenelo ezilethwe yi-Inline Ethylene Concentration Meter
●Ukubeka iliso ngexesha langempela kuqinisekisa ulawulo oluchanekileyo lwe-ethylene, ukuphucula umgangatho we-polymer kunye nokunciphisa ukwaliwa kwebhetshi.
●Iphelisa ukugqithiswa kwedosi, igcina i-ethylene.
●Yenza ngcono ukubuyiswa kwe-monomer kwimigca yokuphinda usebenzise.
●Ifumanisa izinto ezingaqhelekanga ukuze kugcinwe izinto kwangaphambili.
●Ayilungiswa kakhulu.
