Ikhwalithi ephezulu yaseChina Izimboni Zezitshalo ze-Cryogenic LNG - i-134~200 TPD LNG isitshalo sokuphehla uketshezi - Rongteng

Incazelo yesistimu ngayinye

Ukuhlukaniswa kokuhlunga kwegesi okuphakelayo kanye neyunithi yokulawula ingcindezi

1）Incazelo yenqubo

Igesi yemvelo ephakelayo evela enhla nomfula igeleza epayipini ngengcindezi engu-5.0 ~ 6.0MpaG ingena kusihlukanisi sokuhlunga segesi yokuphakelayo ngemva kokulawula ingcindezi, futhi ingena ohlelweni olungezansi komfula ngemva kokuhlukana nokubala.

Imishini eyinhloko yenqubo iyisihlukanisi sokuhlunga igesi lokuphakelayo, i-flowmeter, isilawuli sokucindezela, njll.

2) Amapharamitha wokuklama

Umthamo wokucubungula: 20×10⁴Nm³/ngosuku

Ibanga lokulungiswa: 50% ~ 110%

Uhlelo lokwelapha ngaphambilini

Iyunithi ye-feed deacidification

1）Incazelo yenqubo

Igesi ephakelayo evela enhla nomfula ingena kuyunithi yegesi yokuqeda acid acid, esebenzisa isisombululo se-MDEA ukususa amagesi e-asidi njenge-CO.₂kanye no-H₂S kugesi ophakelayo.

Igesi yemvelo ingena isuka engxenyeni engezansi ye-absorber (umbhoshongo omuncayo) futhi idlule ku-absorber kusukela phansi kuya phezulu; Isixazululo se-MDEA esivuselelwe ngokugcwele (isixazululo esithambile) singena sisuka engxenyeni engenhla ye-absorber bese sidlula ku-absorber kusuka phezulu kuya phansi. Isixazululo se-MDEA sokugeleza kwe-reverse kanye negesi yemvelo kuthintwa ngokugcwele ku-absorber, i-CO₂egesini imuncwa futhi ingena esigabeni se-liquid, futhi izingxenye ezingaxutshwe ziholwa ziphuma phezulu kwe-absorber bese zifaka i-cooler ne-separator yegesi ye-decarbonization. Igesi evela kusihlukanisi segesi ye-decarbonization ingena kuyunithi yokukhipha igesi ephakelayo i-mercury, futhi i-condensate iya ku-flash tank.

Okuqukethwe kwe-CO₂kugesi yemvelo elashwayo ingaphansi kuka-50ppmv.

Isixazululo se-MDEA esidonsa i-CO₂ibizwa ngokuthi isixazululo esicebile, esithunyelwa embhoshongweni we-flash, futhi igesi yemvelo ekhanyiswa yi-depressurization ithunyelwa ohlelweni lukaphethiloli. Ngemuva kokushintshana kokushisa phakathi koketshezi olucebile lwe-flash nesixazululo (uketshezi oluthambile) olugeleza luphuma phansi kombhoshongo wokuvuselela, phakamisa izinga lokushisa libe ngu-~ 98 ℃ engxenyeni engenhla yombhoshongo wokuvuselela, futhi wenze ukuhlubula ukuvuselelwa embhoshongweni wokuvuselela kuze kube yilapho idigri elithambile loketshezi oluthambile lufinyelela inkomba.

Uketshezi oluncane oluphuma embhoshongweni wokukhiqiza kabusha ludlula kwisishintshi sokushisa esinoketshezi esicebile nesimpofu kanye nesipholile soketshezi oluthambile. Uketshezi oluthambile lupholiswe ku-~ 40 ℃, lucindezelwe yiphampu yoketshezi oluthambile futhi lungena lusuka engxenyeni engenhla yombhoshongo wokumuncwa.

Igesi ephumayo engaphezulu kombhoshongo wokuvuselela ingena kusihlukanisi segesi ye-asidi nge-cooler yegesi ye-asidi, igesi evela kusihlukanisi segesi ye-asidi ithunyelwa ohlelweni lokukhipha igesi le-asidi, futhi i-condensate ithunyelwa kusihlukanisi se-flash ngemva kokucindezelwa yipompo yokutakula.

Umthombo wokushisa we-reboiler yombhoshongo wokuvuselela ushiswa ngamafutha okudlulisa ukushisa. Imishini yenqubo eyinhloko yale yunithi iwumbhoshongo wokumunca kanye nombhoshongo wokuvuselela.