Sarrafa Tarin Ethylene a cikin Haɗin Roba

Robar roba wani nau'in roba ne da aka yi da ɗan adam wanda aka samar da shi ta hanyar amfani da man fetur. Sau da yawa ana amfani da shi don aikace-aikace kamar sassan motoci -- tayoyi, ƙofofi da tagogi. Haɗa monomer da ba a sarrafa ba ya haɗa da tace waɗannan ɓangarorin mai -- ta hanyar hanyoyin kamar fasa naphtha da distillation -- don tsarkake monomers da aka yi niyya, domin gurɓatattun abubuwa za su wargaza amsawar polymerization da ke biyo baya. Monomers da aka tsarkake galibi suna da tsarkin kashi 99.5% ko sama da haka, suna kafa harsashin haɗa roba.

Babban matakin samarwa shine polymerization: ana haɗa monomers masu tsabta da masu farawa kuma ko dai a warwatse a cikin ruwa ko kuma a narkar da su a cikin sinadarai masu narkewa na halitta. Wannan tsari yana canza ƙananan ƙwayoyin monomer zuwa dogayen sarƙoƙi na polymer, yana samar da robar ɗanyen mai tare da abun ciki na roba hydrocarbon na 80-90%. Mataki mai mahimmanci na biyewa shine vulcanization, inda ake ƙara sulfur ko peroxides kuma ana dumama su don samar da haɗin gwiwa tsakanin sarƙoƙin polymer - robar da ba a haɗa ta ba ta da laushi kuma tana da manne don ta zama da amfani. Robar da aka yi da vulcanized da farko tana da tsarkin polymer na 95-98%, amma don aikace-aikacen da ke da ƙarfi, ana buƙatar ƙarin tsarkakewa.

Wahala a auna yawan sinadarin Ethylene

A cikin haɗakar roba, musamman ga monomer ethylene-propylene-diene (EPDM) ko robar ethylene-propylene (EPR/EPM), auna daidaiton yawan ethylene yana da mahimmanci don sarrafa motsin polymerization, tabbatar da daidaiton halayen polymer da rage sharar gida.

Bayani game da Tsarin Haɗa Roba

Haɗa roba don EPDM/EPR yawanci ya ƙunshi:

Isarwa daga Kayan Abinci: Ana ciyar da Ethylene da propylene (da diene na EPDM) a matsayin iskar gas a cikin wani reactor, sau da yawa ana narkar da su a cikin wani sinadari mai narkewa ko kuma a kiyaye su a cikin matakan iskar gas/ruwa.

Reactor na Polymerization: CSTR ko madauki mai aiki inda monomers ke amsawa da abubuwan kara kuzari a 30-90°C da kuma sandar 10-30, suna samar da sarƙoƙin polymer.

Maido da Maganin Solution/Monomer: Ana cire monomers ɗin da ba su da amsawa, sake yin amfani da su, ko kuma a tsaftace su, sau da yawa ta hanyar amfani da ganguna ko kuma walƙiya.

Kammalawa: Ana raba polymer, a wanke, sannan a fitar da shi, tare da duba inganci don yawansa da kuma danko na Mooney.

Ethylene yana aiki a matsayin monomer mai mahimmanci a cikin haɗakar roba, wani muhimmin abu a masana'antar man fetur. Yawan wannan monomer a cikin jirgin amsawa yana nuna kai tsaye yadda polymerization ke aiki, kuma saboda haka, halayen zahiri da na sinadarai na polymer na ƙarshe, kamar nauyin kwayoyin halitta da zafin narkewa. Lokacin da ba a sarrafa yawan ethylene daidai ba, polymer ɗin da ya haifar zai iya nuna rarrabuwar abubuwa marasa tsari, wanda ke haifar da rarraba nauyin kwayoyin halitta da rashin daidaituwar ingancin samfurin ƙarshe. Misali, akwai alaƙa tsakanin ƙaruwar matsin lamba na ethylene da abun da ke cikin ethylene a cikin copolymers da aka samar, wanda hakan ke shafar zafin narkewarsu.

Wannan bambancin ingancin samfura yana da tasiri kai tsaye da kuma na zahiri a fannin kuɗi. Domin tabbatar da cewa kowace ƙungiya da aka ƙera ta cika ƙa'idodin inganci mafi ƙaranci, masu aiki galibi suna amfani da wata hanya da aka sani da "kyauta mai inganci". Wannan ya ƙunshi ƙirƙirar samfura da halaye masu inganci waɗanda suka wuce ƙa'idodin da ake buƙata, wanda hakan ke haifar da ƙarin injiniyanci don rama bambancin aunawa da sarrafawa. Wannan aikin, yayin da yake tabbatar da karɓar samfura, yana haifar da ƙaruwar amfani da kayan masarufi, yawan amfani da makamashi, da tsawaita lokacin zagayowar, waɗanda duk ke haifar da manyan kuɗaɗen aiki da raguwar riba. Babban matsalar ba lahani ba ne a cikin tsarin sinadarai da kanta, amma gibin da ke cikin ma'aunin lokaci da ma'aunin sarrafawa wanda ke jagorantar ta, wanda ke haifar da yanayin aiki mai amsawa maimakon aiki mai ƙarfi.

Yi magana da ƙwararrenmu don tantance buƙatun aikinka.

Tuntuɓi Ƙwararre

Maganin Ma'aunin Tattara Ma'aunin Lonnmeter Mai Ci Gaba

Binciken da aka yi a dakin gwaje-gwaje na gargajiya ba shi da kyau ga buƙatun zamani na ci gaba da aiki. Sau da yawa suna haifar da jinkiri wajen bincike da kuma maimaita aunawa mai wahala. A wata ma'anar, bayanan da masu aiki ke karɓa hoto ne na tsarin daga mintuna ko ma awanni. Rashin bayanai yana haifar da karkacewar inganci bayan sun riga sun faru kuma wataƙila bayan an lalata cikakken tsari, wanda ke haifar da ɓarna mai tsada da sake yin aiki.

An yi amfani da injin auna mita na Lonnmeteryawan firikwensin ethylenedon cimma daidaiton ma'aunin taro a ainihin lokaci a cikin tsarin sinadarai mai ci gaba. Yana aiki da kyau ko da a cikin yanayi mai saurin canzawa; Mita mai yawan ethylene ta yanar gizo kayan aiki ne na masana'antu wanda aka tsara don magance ainihin buƙatun ma'aunin hanyoyin sinadarai. Yana amfani da fasahar ji ta zamani - tushen siginar sauti don tayar da cokali mai daidaita ƙarfe, yana sa cokali mai yatsu ya yi rawar jiki a mitar sautinsa na halitta. Abin lura, wannan mitar sauti tana nuna alaƙa kai tsaye da yawan ruwan da cokali mai daidaita ya taɓa. Daga baya, ana iya tantance yawan ruwan ta hanyar nazarin mita - tare da diyya ta zafin jiki da aka aiwatar don magance sauye-sauyen zafin jiki a cikin tsarin, yana tabbatar da daidaiton ma'auni.

Ma'aunin Tattara Ethylene

Don ci gaba da auna yawan mai a cikin bututun mai ko tankuna

Tsarin Fork Mai Gyara

Sanya Shigarwa a Tsarin Haɗin Roba

Layin ciyarwar Monomer: Sanya firikwensin a cikin bututun ciyar da ethylene bayan matsewa don tabbatar da tsarki da kuma daidaita yawan allurar.
Shigar da Reactor: A saka a wurin haɗa sinadarin monomer da hexane/propylene don sarrafa sinadarin ethylene da ya narke.
In-Reactor: Matsayi a cikin CSTR kusa da mai tayar da hankali don sarrafa polymerization na ainihin lokaci.
Layin Maimaita Amfani: Nemo wurin fitar da ganga mai walƙiya don inganta murmurewa daga ethylene da ba a mayar da martani ba.
Layin Fita: Sanya layin sharewa/fitar iska don sa ido kan hayaki da kuma tabbatar da tsaro.