Chiyambi
Zipangizo zotsekemera za mpweya wachilengedwe (desulfurization), zomwe zimatchedwanso kuti molecular sieve sulfide removal kuchokera ku mpweya wachilengedwe, ndi chida chofunikira kwambiri pochotsa H2S kuchokera ku mpweya wachilengedwe ndi mankhwala a mpweya wachilengedwe.
Kuyenda kwa njira
Chipangizochi chimagwiritsa ntchito njira zitatu za nsanja, imodzi yothira madzi a nsanja, imodzi yokonzanso nsanja ndi imodzi yoziziritsa. Pambuyo pochotsa madzi a hydrocarbon omwe ali mkati kudzera mu cholekanitsa fyuluta ya mpweya wodyetsa, mpweya wodyetsa umalowa mu nsanja yochotsa sulfurization ya molecular sieve. Madzi ndi mercaptan mu mpweya wodyetsa zimalowetsedwa ndi sieve ya molecular kuti zitsimikizire kusowa madzi m'thupi ndi njira yothira madzi a mercaptan. Mpweya woyeretsedwa kuchokera ku kusowa madzi m'thupi ndi kuchotsa mercaptan umalowa mu fyuluta ya fumbi la mpweya wopangidwa kuti uchotse fumbi la sieve ya molecular, kenako umatumizidwa kunja ngati mpweya wopangidwa.
Masefa a mamolekyu ayenera kubwezeretsedwanso pambuyo potengera madzi ndi mercaptan. Pambuyo posefa fumbi la gasi la chinthucho, gawo la gasi la chinthucho limachotsedwa ngati gasi wobwezeretsanso. Gasi likatenthedwa kufika 300 ℃ ndi ng'anjo yotentha, nsanjayo imatenthedwa pang'onopang'ono kufika 272 ℃ kudzera mu sefa ya molekyulu yomwe yamaliza njira yolowetsera madzi kuchokera pansi kupita pamwamba, kotero kuti madzi ndi mercaptan zomwe zimalowetsera madzi pa sefa ya molekyulu zitha kulekanitsidwa ndikukhala gasi wobwezeretsanso wolemera kuti amalize njira yobwezeretsanso.
Pambuyo pa nsanja yobwezeretsanso, mpweya wochuluka wobwezeretsanso umalowa mu condenser ya mpweya wobwezeretsanso ndikuzizira kufika pa 50 ℃, kotero kuti madzi ambiri amazizira, kenako amalekanitsidwa ndi cholekanitsa, ndipo mpweya wochuluka wobwezeretsanso umatenthedwa.
Nsanja ya molekyulu iyenera kuziziritsidwa ikatha kubwezeretsedwanso. Kuti ibwezeretsedwe mokwanira ndikugwiritsa ntchito mphamvu ya kutentha, mpweya wobwezeretsa umagwiritsidwa ntchito koyamba ngati mpweya wozizira wopukutira, ndipo nsanjayo imaziziritsidwa kufika pa 50 ℃ kuchokera pamwamba mpaka pansi kudzera mu nsanja ya molekyulu yochotsa sulfurization yomwe yamaliza njira yobwezeretsanso. Nthawi yomweyo, imatenthedwa yokha. Mpweya wozizira wopukutira umatumizidwa kuchokera mu nsanja yoziziritsira kenako umalowetsedwa mu uvuni wotenthetsera mpweya wobwezeretsanso kuti utenthedwe. Pambuyo potenthetsera, nsanja ya molekyulu yochotsa sulfurization imasinthidwanso kukhala mpweya wobwezeretsa wopanda mafuta. Chipangizocho chimasinthasintha maola 8 aliwonse.
