Ngokuthuthukiswa kobuchwepheshe obusha, ukukhiqizwa kwenayiloni 6 kungene ezinhlwini zobuchwepheshe obusha obuphezulu.Ngokusho kokusetshenziswa okuhlukile, inqubo ye-polymerization yenayiloni 6 ingahlukaniswa ngalezi ezilandelayo.
1. Indlela ye-polymerization enezigaba ezimbili
Le ndlela yakhiwa izindlela ezimbili ze-polymerization, okuyi-pre-polymerization kanye nezindlela ze-post-polymerization, ezivame ukusetshenziswa ekukhiqizeni indwangu yentambo yezimboni ene-viscosity ephezulu.Izindlela ezimbili ze-polymerization zihlukaniswe zibe yi-pre-polymerization pressurization kanye ne-post-polymerization decompression.Enkambweni yokukhiqiza, ukwelashwa kwe-pressurization noma ukuchithwa kwe-decompression kwenziwa ngokuqhathaniswa nesikhathi se-polymerization, umuntu ngamunye emkhiqizweni kanye nevolumu ephansi ye-poly.Ngokuvamile, indlela yokunciphisa i-post-polymerization ingcono, kodwa idinga ukutshalwa kwezimali okwengeziwe, kanye nezindleko eziphakeme, okulandelwa ukucindezela okuphezulu nokucindezela okuvamile ngokwezindleko.Nokho, izindleko zokusebenza zale ndlela ziphansi.Ezindleleni zokukhiqiza ze-pre-polymerization kanye ne-post-polymerization decompression, ngesikhathi se-pressurization, izithako zokukhiqiza ziyaxutshwa bese zonke zifakwa ku-reactor, bese-ke ukusabela kwendandatho yokuvula amanzi kanye nokusabela kwe-polymerization ingxenye kuyenziwa. ezingeni lokushisa elithile.Inqubo iwukusabela kwe-endothermic.Ukushisa kutholakala engxenyeni engenhla yepayipi le-polymer.Phakathi nenqubo yokucindezela, i-polymer ihlala ku-polymer tube isikhathi esithile bese ingena ku-polymerizer, lapho i-viscosity ye-polymer ekhiqizwayo izofinyelela cishe ku-1.7.
2. Indlela ye-polymerization eqhubekayo ngengcindezi evamile
Le ndlela isetshenziselwa ukukhiqizwa kweribhoni yasekhaya yenayiloni 6. Izici: I-polymerization enkulu eqhubekayo yamukelwa ngezinga lokushisa elifinyelela ku-260℃ kanye nesikhathi se-polymerization amahora angu-20.I-oligomer esele esigabeni itholakala lapho amanzi ashisayo ephikisana nomsinga.Ukulawulwa kwesistimu yokusabalalisa kwe-DCS nokomisa umoya kwegesi ye-ammonia nakho kuyamukelwa.Inqubo yokutholwa kwe-monomer isebenzisa ubuchwepheshe bokuhwamuka kwemiphumela emithathu eqhubekayo kanye nokugxila kanye nokukhishwa kwe-distillation okungaqhubeki nokugxila kwamanzi akhishiwe.Izinzuzo zendlela: Ukusebenza okuqhubekayo okuqhubekayo kokukhiqiza, okukhiphayo okuphezulu, ikhwalithi yomkhiqizo ophezulu, indawo encane ehlala inqubo yokukhiqiza.Indlela iwubuchwepheshe obujwayelekile ekukhiqizeni iribhoni yasekhaya yamanje.
3. Indlela ye-autoclave polymerization yohlobo lwesikhashana
Isetshenziswa kabanzi ekukhiqizeni amapulasitiki amancane wobunjiniyela.Isikali sokukhiqiza siyi-10 kuya ku-12t/d;Okukhiphayo kwe-autoclave eyodwa ngu-2t/batch.Ngokuvamile, ingcindezi yenqubo yokukhiqiza ingu-0.7 kuya ku-0.8mpa, futhi i-viscosity ingafinyelela ku-4.0, no-3.8 ngesikhathi esivamile.Lokhu kungenxa yokuthi uma i-viscosity iphezulu kakhulu, okukhiphayo kuzoba phansi kakhulu.Ingasetshenziselwa ukukhiqiza i-pa 6 noma i-pa 66. Indlela inenqubo yokukhiqiza elula, okulula ukuyishintsha izinhlobo futhi iguquguquke ekukhiqizeni.
Isikhathi sokuthumela: Feb-21-2022