Inqubo yokukhiqiza ye-N-hexane
Iningi lokukhiqizwa kwe-hexane yakwamanye amazwe lisebenzisa izinqubo zokukhangisa ngesisefo samangqamuzana, njenge-Richfielcd (Richfield) kanye ne-Watson (Watson) e-United States, kusetshenziswa i-raffinate ehlanganisiwe njengento eluhlaza, ngokugaya kabusha imibhede emibili noma ngaphezulu ukuze ifakwe. Cindezela okuthi desorption ukuze ukhiqize i-n-hexane.
Iningi labakhiqizi be-hexane basekhaya basebenzisa inqubo ye-hydrogenation distillation, ehlukaniswe yaba izinhlobo ezimbili:

Okokuqala, i-hydrogenation bese ilungiswa.

Eyaziwa nangokuthi i-pre-hydrogenation, impahla eluhlaza ishiswa ukushintshaniswa kokushisa, ifinyelela izinga lokushisa lokuphendula, ingena ku-reactor ye-hydrogenation, i-desulfurization kanye ne-deomatization reaction ngaphansi kwesenzo se-catalyst, uwoyela we-solvent kanye nengxube ye-hydrogen ingena ethangini lokuhlukanisa ukuze kuhlukaniswe. , i-hydrogen recovery, uwoyela oncibilikayo embhoshongweni wokuhlukanisa Sika ube yimikhiqizo eqediwe. Ngokuvamile, ngemva kwe-hydrogenation yezinto zokusetshenziswa, isahlukaniswa futhi inqunywe ku-n-hexane, nezinye izinhlobo ezahlukene zamafutha e-solvent. Inzuzo ukuthi zonke izinto zokusetshenziswa ziyancipha futhi ziphelile, zisebenzisa ngokugcwele umkhiqizo ngamunye. Ububi ukuthi ukutshalwa kwezimali kukhulu futhi ukusetshenziswa kwezinto ezibonakalayo kuphezulu.

Okwesibili, ukulungiswa bese kuba yi-hydrogenation.

Ebizwa nangokuthi i-post-hydrogenation, esimweni se-n-hexane, impahla eluhlaza iqala ukusikwa ibe yi-hexane eluhlaza ye-distillation range ye-66-69, ukuhlanzeka kwe-hexane eluhlaza kuthuthukiswa kakhulu, futhi njengoba iqembu le-phenyl equkethwe ku-n-hexane, i-hexane ku-hexane engahluziwe Okuqukethwe nakho kuyanda kakhulu, bese kuba ngaphansi kwe-hydrodebenzene desulfurization ukuze kukhiqizwe i-n-hexane yekhwalithi ephezulu. Inzuzo ukuthi utshalomali luncane futhi ukusetshenziswa kwezinto ezibonakalayo kuncane. Okubi ukuthi ingxenye ye-unhydrogenated ayisetshenziswa ngempumelelo.