I-Hydrotreating catalystsidlala indima ebalulekile ekucwengisweni kwemikhiqizo kaphethiloli, ikakhulukazi ku-hydrodesulfurization (I-HDS) i-naphtha, i-vacuum gas oil (I-VGO) kanye ne-ultra-low sulfur diesel (I-ULSD). Lawa ma-catalyst abalulekile ekukhipheni isulfure, i-nitrogen nokunye ukungcola ezingxenyeni zikawoyela ongahluziwe, ngaleyo ndlela kuthuthukiswe ikhwalithi nokuhambisana nemvelo komkhiqizo wokugcina. Ukuze siqonde ukubalulekai-hydrotreating catalysts, kuyadingeka ukuhlolisisa umqondo we-hydrotreating kanye nendima yama-catalysts kule nqubo.
Iyini i-hydrotreating catalyst?
I-Hydrotreating catalysts yizinto ezikhuthaza ukusabela kwamakhemikhali okuhilelekile ku-hydrotreating yezingxenyana zikawoyela ongahluziwe. I-Hydrotreating isho iqoqo lezinqubo ezikhuthazayo ezihilela ukusetshenziswa kwe-hydrogen ukususa ukungcola kanye nokwenza ngcono ikhwalithi yemikhiqizo ehlukahlukene kaphethiloli. Izinhlobo eziyinhloko zeI-hydroprocessing ihlanganisa i-hydrotreating, i-hydrocracking, futhii-hydrofinishing, ngayinye idinga ama-catalyst athile afanelana nokusabela okufunayo.
I-Naphtha Hydrotreating Catalyst
I-Naphtha hydrotreating ihlanganisa ukususa isulfure, i-nitrogen nokunye ukungcola ukuze kuhlangatshezwane nemithetho eqinile yezemvelo kanye nokwenza ngcono ikhwalithi ye-octane yomkhiqizo. Ama-Catalysts asetshenziswa kui-naphtha hydrotreatingngokuvamile zisekelwe ezinsimbi ezifana ne-cobalt, i-molybdenum ne-nickel esekelwe ku-alumina noma ezinye izinto ezisezingeni eliphezulu. Lawa ma-catalyst akhuthaza ukusabela kwe-hydrogenation kanye ne-desulfurization ukuze kukhiqizwe i-low-sulfur, i-high-octane naphtha elungele ukuxutshwa kuphethiloli.
I-VGO HDS
Vacuum amafutha egesi(I-VGO) iwumthombo obalulekile wokuphakelayo wezinqubo ezihlukahlukene eziya phansi komfula, okuhlanganisa i-fluidized bed catalytic cracking (FCC) kanye ne-hydrocracking. Kodwa-ke, i-VGO ivamise ukuqukatha amazinga aphezulu esibabule ne-nitrogen, adinga ukuncishiswa ukuze ahlangabezane nezimfuneko zomkhiqizo. Ama-catalyst e-Hydrotreating aklanyelwe ngokuqondileI-VGO HDSakhiwe ngokucophelela ukuze amelane nezimo zokusebenza ezinzima futhi akhuthaze ukususwa kwezinhlanganisela zesulfure ne-nitrogen, okuholela ku-VGO ehlanzekile, ebaluleke kakhulu ukuze kuqhutshekwe nokucubungula.
Ngenxa yezindinganiso eziqinile zokukhipha umoya, udizili wesulphur ophansi kakhulu (I-ULSD) ingumkhiqizo obalulekile embonini yesimanje yokucwenga. Ukukhiqizwa kwe-ULSD kubandakanya i-hydrotreating ukuze kwehliswe okuqukethwe kwesulfure kumazinga aphansi kakhulu. Ama-catalyst e-ULSD HDS akhetha kakhulu ukukhishwa kwesulfur kuyilapho enciphisa i-hydrogenation yezinye izingxenye, iqinisekisa ikhwalithi yomkhiqizo edingekayo kanye nezidingo zokulawula ezihlangabezana nazo.
Indima ye-catalyst
Kuzo zonke lezi zinqubo ze-hydrotreating, ama-catalysts adlala indima ebalulekile ekukhuthazeni ukusabela okufunayo ngenkathi egcina ukuzinza nomsebenzi wesikhathi eside. Ukukhethwa kokwakhiwa kwe-catalyst, okuhlanganisa uhlobo nokugxila kwezinsimbi ezisebenzayo nezinto ezisekelayo, kuthinta kakhulu ukusebenza kahle nokukhetha kokusabela kwe-hydrotreating. Ukwengeza, inqubekelaphambili kubuchwepheshe be-catalyst, njengokuthuthukiswa kokwakhiwa kwensimbi entsha kanye nezinto ezithuthukisiwe zokusekela, iqhubeka nokuthuthukisa ukusebenza nokuphila isikhathi eside kwama-catalysts e-hydroprocessing.
Ekuphetheni
I-Hydrotreating catalystszibalulekile ekukhiqizeni imikhiqizo kaphethiloli ehlanzekile, esezingeni eliphezulu. Njengoba imithetho yezemvelo iba namandla kakhulu, isidingo sama-catalyst asebenzayo futhi akhethiwe ezinqubweni ze-hydrotreating siyaqhubeka sikhula. Umsebenzi oqhubekayo wocwaningo nokuthuthukiswa kubuchwepheshe be-catalyst uhlose ukuqhubeka nokwenza ngcono ukusebenza kanye nokusimama kwama-catalysts okucubungula i-hydroprocessing, ukuqinisekisa ukukhiqizwa kwesikhathi esizayo kwezibaseli ezihambisana nemvelo kanye namakhemikhali e-petrochemicals.
Isikhathi sokuthumela: Jun-06-2024