Ukulawulwa Kokuhlushwa kwe-Ethylene ekwenziweni kwerabha
Irabha yokwenziwa iyi-elastomer eyenziwe ngumuntu ekhiqizwa yimikhiqizo ye-petroleum. Ivame ukusetshenziselwa izinhlelo zokusebenza ezifana nemikhakha yezimoto - amathayi, iminyango namafasitela. Ukukhishwa kwe-monomer eluhlaza kuhilela ukucwenga lezi zingxenyana zamafutha - ngezinqubo ezifana nokuqhekeka kwe-naphtha kanye nokuhluzwa - ukuhlanza ama-monomer aqondiwe, njengoba ukungcola kungaphazamisa ukusabela okulandelayo kwe-polymerization. Ama-monomer ahlanziwe avelayo ngokuvamile anobumsulwa obungu-99.5% noma ngaphezulu, okubeka isisekelo sokwenziwa kwerabha.
Isinyathelo esiyinhloko sokukhiqiza i-polymerization: ama-monomer ahlanziwe axutshwa nama-initiators bese ehlakazeka emanzini noma ancibilikiswe ezinyibilikisini eziphilayo. Le nqubo iguqula ama-molecule amancane e-monomer abe amaketanga amade e-polymer, akhiphe irabha eluhlaza enokuqukethwe kwe-hydrocarbon yerabha okungu-80-90%. Isinyathelo esilandelayo esibalulekile i-vulcanization, lapho kufakwa khona i-sulfur noma ama-peroxide bese kushiswa ukuze kwakhiwe izixhumanisi eziphakathi kwamaketanga e-polymer—irabha engavuvukile ithambile kakhulu futhi inamathela ukuba ibe wusizo. Irabha evuvukile ekuqaleni inobumsulwa be-polymer obungu-95-98%, kodwa ngezicelo zokusebenza okuphezulu, kudingeka ukuhlanzwa okwengeziwe.
Ubunzima Ekulinganisweni Kokuhlushwa Kwe-Ethylene
Ekuhlanganisweni kwerabha, ikakhulukazi irabha ye-ethylene-propylene-diene (EPDM) noma irabha ye-ethylene-propylene (EPR/EPM), ukulinganisa okunembile kokuhlushwa kwe-ethylene kubalulekile ekulawuleni i-kinetics ye-polymerization, ukuqinisekisa izakhiwo ze-polymer ezihambisanayo kanye nokunciphisa imfucuza.
Ukubuka konke kwenqubo yokwenziwa kwerabha
Ukwenziwa kwerabha kwe-EPDM/EPR kuvame ukuhilela:
Ukulethwa Kwezitsha ZokudlaI-ethylene ne-propylene (kanye ne-diene ye-EPDM) zifakwa njengamagesi ku-reactor, ngokuvamile zincibilikiswa ku-solvent noma zigcinwe ezigabeni zegesi/uketshezi.
I-Polymerization Reactor: I-CSTR noma i-loop reactor lapho ama-monomer esabela khona nama-catalyst ku-30-90°C kanye ne-10-30 bar, akha amaketanga e-polymer.
Ukubuyiselwa Kwesinyibilikisi/I-MonomerAma-monomer angaphendulwanga ayasuswa, aphinde asetshenziswe, noma ahlanzwe, ngokuvamile ngokudilizwa noma ama-flash drums.
Ukuqeda: I-polymer iyahlukaniswa, igezwe, futhi ikhishwe, ngokuhlolwa kwekhwalithi kobuningi kanye nokuthamba kwe-Mooney.
I-ethylene isebenza njenge-monomer ebalulekile ekwakhiweni kwerabha, okuwumthombo obalulekile embonini ye-petrochemical. Ukuhlushwa kwale monomer ngaphakathi kwesitsha sokusabela kunquma ngqo i-kinetics ye-polymerization, futhi ngenxa yalokho, izakhiwo zomzimba nezamakhemikhali ze-polymer yokugcina, njengesisindo sama-molecule kanye nokushisa kokuncibilika. Lapho ukuhlushwa kwe-ethylene kungalawulwa ngokunembile, i-polymer ephumayo ingabonisa ukusabalala okungalawuleki, okuholela ekusatshalalisweni okubanzi kwesisindo sama-molecule kanye nekhwalithi yomkhiqizo wokugcina engaguquki. Isibonelo, kukhona ubudlelwano obuqondile phakathi kokwanda kwengcindezi ye-ethylene kanye nokuqukethwe kwe-ethylene kuma-copolymer akhiqizwayo, okuthinta izinga lokushisa lawo lokuncibilika.
Lokhu kuguquguquka kwekhwalithi yomkhiqizo kunomthelela oqondile nobonakalayo kwezezimali. Ukuqinisekisa ukuthi yonke inqwaba ekhiqiziwe ihlangabezana nezilinganiso zekhwalithi ezincane, abaqhubi bavame ukusebenzisa indlela eyaziwa ngokuthi "i-quality giveaway". Lokhu kuhilela ukukhiqiza ngamabomu umkhiqizo onezimpawu zekhwalithi ezidlula izincazelo ezidingekayo, empeleni bashintshe inqubo ukuze bakhokhele ukuguquguquka kokulinganisa nokulawula. Lo mkhuba, ngenkathi uqinisekisa ukwamukelwa komkhiqizo, uholela ngqo ekusetshenzisweni kwezinto zokusetshenziswa eziluhlaza okwandisiwe, ukusetshenziswa kwamandla aphezulu, kanye nezikhathi zomjikelezo ezinde, konke okuhunyushwa kube yizindleko zokusebenza ezibalulekile kanye nokuncipha kwenzuzo. Ingqikithi yale nkinga akuyona iphutha enkambisweni yamakhemikhali ngokwayo, kodwa ukuntuleka kokulinganisa kwesikhathi sangempela kanye neluphu yokulawula eyilawulayo, okuholela endleleni yokusebenza esabelayo kunokuba ibe yindlela yokuqapha.
Khuluma nochwepheshe wethu ukuze uhlole izidingo zakho zokusebenza.
Isixazululo Sokulinganisa Ukuhlushwa Kwe-Lonnmeter Esiqhubekayo
Ukuhlaziywa kwendabuko okusekelwe elabhorethri okungaxhunyiwe ku-inthanethi akulungele izidingo eziguquguqukayo neziqhubekayo zomugqa wokukhiqiza wesimanje. Ngokuvamile kubangela ukubambezeleka kokuhlaziywa kanye nokulinganisa okuphindaphindiwe okunzima komsebenzi. Ngamanye amazwi, idatha etholwa ngabaqhubi iyisithombe senqubo kusukela emizuzwini noma ngisho namahora. Ukuntuleka kolwazi kubangela ukuphambuka kwekhwalithi ngemuva kokuthi sekuvele kwenzeke futhi mhlawumbe ngemuva kokuba iqembu lonke selibekwe engcupheni, okuholela ekuchithweni okubizayo kanye nokusebenza kabusha.
I-Lonnmeter isunguleukuhlushwa kwenzwa ye-ethyleneukuze kufezwe ukulinganiswa okunembile kokuhlushwa ngesikhathi sangempela enqubweni yamakhemikhali eqhubekayo. Isebenza kahle ngisho nasendaweni eshintsha ngokushesha; Imitha yokuhlushwa ye-ethylene eku-inthanethi iyithuluzi lezinga lezimboni elenzelwe ukubhekana nezidingo zokulinganisa ezinembile zezinqubo zamakhemikhali. Isebenzisa ubuchwepheshe bokuzwa obuthuthukisiwe -- umthombo wesignali ye-acoustic ukuvusa ifoloko yokulungisa yensimbi, okwenza ifoloko idlidlize ngemvamisa yayo yemvelo yokuhlushwa. Okuphawulekayo ukuthi, le mvamisa yokuhlushwa ikhombisa ukuhlangana okuqondile nobuningi boketshezi oluthinta ifoloko yokulungisa. Ngemuva kwalokho, ubukhulu boketshezi bunganqunywa ngokuhlaziywa kwemvamisa -- ngokunciphisa izinga lokushisa okusetshenziswe ukulwa nokushintsha kwezinga lokushisa ngaphakathi kohlelo, ukuqinisekisa ukunemba kokulinganisa.
Isakhiwo sefoloko yokulungisa
Ukufakwa Kokufakwa Kwenqubo Yokwenziwa Kwenjoloba
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Umugqa Wokuphakela we-Monomer: Beka inzwa kuphayiphi ye-ethylene feed post-compressor ukuqinisekisa ubumsulwa nokulungisa umthamo.
Ukungena kwe-Reactor: Faka endaweni yokuxuba i-monomer-solvent ne-hexane/propylene ukulawula i-ethylene encibilikisiwe.
I-In-Reactor: Indawo ngaphakathi kwe-CSTR eduze kwe-agitator yokulawula i-polymerization yesikhathi sangempela.
Umugqa Wokusebenzisa Kabusha: Thola endaweni yokukhipha idrama ukuze ulungise ukubuyiswa kwe-ethylene engakaphenduli.
Umugqa Womoya Okhipha Umoya: Faka emugqeni wokuhlanza/wokungenisa umoya ukuze uqaphe ukukhishwa kwegesi nokuqinisekisa ukuphepha.
Funda Okwengeziwe Ngemikhiqizo Yethu
Izinzuzo Ezilethwe Yimitha Yokuhlushwa Kwe-Ethylene Esemgqeni
●Ukuqapha ngesikhathi sangempela kuqinisekisa ukulawulwa kwe-ethylene okunembile, ukuthuthukisa ikhwalithi ye-polymer nokunciphisa ukwenqatshwa kweqoqo.
●Iqeda ukumunca ngokweqile, isindisa i-ethylene.
●Ithuthukisa ukubuyiselwa kwe-monomer emigqeni yokuvuselela kabusha.
●Ithola ukungalingani kokulungiswa okubikezelayo.
●Ukunakekelwa okuncane.
