Igesi yokuphakelayo iyunithi yokuqeda i-asidi
Igesi yokuphakela ecindezelwe ingena kuyunithi yokuqeda i-asidi, esebenzisa isisombululo se-MDEA ukususa i-CO2, i-H2S kanye namanye amagesi e-asidi kugesi yokuphakela.
Igesi yemvelo ingena isuka engxenyeni engezansi ye-absorber futhi idlula ku-absorber kusukela phansi kuya phezulu; Isixazululo se-MDEA esivuselelwe ngokugcwele (isisombululo esithambile) singena sisuka engxenyeni engenhla ye-absorber futhi sidlula ku-absorber kusukela phezulu kuya phansi. Isixazululo se-MDEA sokugeleza okuphambene negesi yemvelo kuthintana ngokugcwele ku-absorber. I-CO2 kugesi iyamuncwa futhi ingena esigabeni soketshezi. Izingxenye ezingamuncwanga ziholwa zisuka phezulu kwe-absorber bese zingena ku-cooler yegesi yokudambisa i-carbonization kanye ne-separator. Igesi evela ku-decarbonization gas separator ingena kuyunithi yokomisa igesi yokuphakelayo, bese i-condensate iya ethangini le-flash.
Okuqukethwe kwe-CO2 kugesi yemvelo ephathwayo kungaphansi kuka-50ppmv.
Isixazululo se-MDEA esimunca i-CO2 sibizwa ngokuthi isixazululo esicebile, esithunyelwa embhoshongweni we-flash, kanti igesi yemvelo ekhiqizwa yi-depressurization flash ithunyelwa ohlelweni lukaphethiloli. Ngemva kokushintshana kokushisa phakathi koketshezi olucebile olukhanyayo kanye nesisombululo (uketshezi oluthambile) oluphuma phansi kombhoshongo wokuvuselela, phakamisa izinga lokushisa libe ngu-~ 98 ℃ engxenyeni engenhla yombhoshongo wokuvuselela, bese wenza ukuvuselelwa kabusha kombhoshongo wokuvuselela kuze kube yilapho izinga lokuncipha koketshezi oluthambile lifinyelela ku-index.
Uketshezi oluthambile oluphuma embhoshongweni wokuvuselela ludlula emshinini wokushintshanisa ukushisa koketshezi olucebile nolubi kanye ne-cooler yoketshezi oluthambile. Uketshezi oluthambile luyapholiswa lufike ku-~40 ℃, lucindezelwe yipompo yoketshezi oluthambile bese lungena luvela engxenyeni engenhla yombhoshongo wokumunca.
Igesi ephumayo phezulu kombhoshongo wokuvuselela ingena kwisihlukanisi segesi ye-asidi nge-acid gas cooler, igesi evela kwisihlukanisi segesi ye-asidi ithunyelwa ohlelweni lokukhipha igesi ye-asidi, kanti i-condensate ithunyelwa kwisihlukanisi se-flash ngemva kokucindezelwa yiphampu yokutakula.
Umthombo wokushisa we-reboiler yombhoshongo wokuvuselela ufudunyezwa uwoyela wokudlulisa ukushisa.
Imishini eyinhloko yenqubo yale yunithi umbhoshongo wokumunca kanye nombhoshongo wokuvuselela.
Igesi yokuphakelayo iyunithi yokomisa
Le yunithi isebenzisa ubuchwepheshe bokudonswa kwegesi ngokushintshashintsha kwezinga lokushisa ukuze kuhlukaniswe futhi kuhlanzwe igesi. Ubuchwepheshe bokudonswa kwegesi ngokushintshashintsha kwezinga lokushisa busekelwe ekudonsweni kwegesi okubonakalayo ebusweni bangaphakathi be-adsorbent (izinto eziqinile ezinezimbobo), futhi isebenzisa izici zokuthi amandla okudonswa kwegesi ashintsha ngokushisa okuhlukile kanye nokucindezela. Ngaphansi kwesimo sokuthi i-adsorbent imunca ngokukhetha izingxenye zegesi ezahlukene, imunca ezinye izingxenye kugesi exubile ekushiseni okuphansi kanye nokucindezela okuphezulu. Izingxenye ezingamuncwanga zigeleza ziphume ngesendlalelo se-adsorber futhi zimunca lezi zingxenye ezimuncwayo ekushiseni okuphezulu kanye nokucindezela okuphansi ukuze kusetshenziswe izinga lokushisa eliphansi elilandelayo kanye nokucindezela okuphezulu. Imibhoshongo eminingi yokumunca ingasetshenziswa ukufeza injongo yokuhlukaniswa kwegesi okuqhubekayo.
Iyunithi yokomisa igesi yokuphakelayo ifakwe ama-adsorber amabili okushintsha ukusebenza, okuhlanganisa eyodwa yokumunca, enye yokuvuselela ukuphefumula okubandayo.
Igesi yokuphakelayo evela kuyunithi yegesi yokuphakelayo ingena phezulu kwe-adsorber. Ngemva kokukhipha amanzi ngesihlungo sama-molecule, iphuma phansi kwe-adsorber. Ngemva kokuphelelwa amanzi, igesi yemvelo ingena kuyunithi yokuphakelayo igesi yokuphakelayo.
Iyunithi yokususa igesi yokuphakelwa isebenzisa inani elincane legesi yokuphakelwa ehlanziwe njengensiza yokuphefumula ebandayo kanye nokuvuselela.
Igesi yokuvuselela idlula kuqala ku-adsorber epholile kusukela phansi kuya phezulu, bese igesi yokuvuselela ishiswa ifike ezingeni lokushisa lokuvuselela elingu-180 ~ 220 ℃ nge-heater yokuvuselela, bese ingena kusukela phansi kwe-adsorber ukuze i-hydrolyze futhi imunce i-adsorbent. Igesi yokuvuselela iphuma phezulu komshini wokomisa bese ingena ku-regeneration gas separator ngemva kokupholiswa yi-regeneration cooler. Ngemva kokuhlukanisa uketshezi, ingena ekungeneni kombhoshongo we-adsorption.
Ngemva kokudlula kule yunithi, amanzi akwigesi yemvelo eyomile angama-≤ 1ppm.
Imishini eyinhloko umbhoshongo wokumunca, i-regeneration heater, i-regeneration gas cooler, i-regeneration gas separator kanye ne-regeneration gas compressor.
Isikhathi sokuthunyelwe: Juni-03-2022