propylene oxidewani nau'i ne na kayan albarkatun sinadarai masu mahimmanci da tsaka-tsaki.An fi amfani dashi a cikin haɗin polyether polyols, polyester polyols, polyurethane, polyether amine, da dai sauransu, kuma yana da mahimmancin albarkatun kasa don shirye-shiryen polyester polyols, wanda shine muhimmin bangare na polyurethane mai girma.Ana kuma amfani da Propylene oxide a matsayin ɗanyen abu don shirya nau'ikan surfactants daban-daban, magunguna, sinadarai na aikin gona da sauransu, kuma yana ɗaya daga cikin mahimman albarkatun ƙasa na masana'antar sinadarai.

Ana samar da propylene oxide ta hanyar iskar oxygen da propylene tare da mai kara kuzari.Ana gauraya danyen propylene da iskar da aka matsa sannan a wuce ta wani injin da ke cike da kara kuzari.Yawan zafin jiki shine 200-300 DEG C, kuma matsa lamba shine kusan 1000 kPa.Samfurin dauki shine cakuda mai dauke da propylene oxide, carbon dioxide, carbon monoxide, ruwa da sauran mahadi.Mai kara kuzari da aka yi amfani da shi a cikin wannan dauki shine canjin karfe oxide mai kara kuzari, irin su mai kara kuzari na oxide na azurfa, chromium oxide mai kara kuzari, da sauransu. Zabin wadannan abubuwan kara kuzari zuwa propylene oxide yana da inganci, amma aikin yana da rauni.Bugu da ƙari, mai haɓakawa da kansa za a kashe shi yayin amsawa, don haka yana buƙatar sake farfadowa ko maye gurbin shi akai-akai.

Rabuwa da tsarkakewa na propylene oxide daga cakuda mai amsawa sune matakai masu mahimmanci a cikin tsarin shiri.Tsarin rabuwa gabaɗaya ya haɗa da wanke ruwa, distillation da sauran matakai.Da farko, ana wanke cakudawar da aka yi da ruwa don cire abubuwan da ba su da ƙarfi kamar su propylene da carbon monoxide.Sa'an nan kuma, cakuda yana distilled don raba propylene oxide daga sauran abubuwan da aka tafasa.Domin samun propylene oxide mai tsafta, ana iya buƙatar ƙarin matakan tsarkakewa kamar adsorption ko cirewa.

Gabaɗaya, shirye-shiryen propylene oxide wani tsari ne mai rikitarwa, wanda ke buƙatar matakai da yawa da yawan amfani da makamashi.Sabili da haka, don rage farashin da tasirin muhalli na wannan tsari, ya zama dole a ci gaba da inganta fasaha da kayan aiki na tsari.A halin yanzu, bincike game da sababbin matakai don shirya propylene oxide ya fi mayar da hankali kan matakai masu dacewa da muhalli tare da ƙarancin amfani da makamashi da inganci, irin su catalytic oxidation ta amfani da oxygen na kwayoyin halitta kamar yadda oxidant, microwave-assisted oxidation tsari, supercritical oxidation tsari, da dai sauransu Bugu da kari. , Bincike kan sababbin abubuwan haɓakawa da sababbin hanyoyin rabuwa kuma suna da matukar mahimmanci don inganta yawan amfanin ƙasa da tsabtar propylene oxide da rage farashin samarwa.