Igesi yokutya iyunithi yokususa iasidi
Igesi yokutya exinzelelweyo ingena kwiyunithi yokunciphisa i-asidi, esebenzisa isisombululo se-MDEA ukususa i-CO2, i-H2S kunye nezinye iigesi ze-asidi kwigesi yokutya.
Igesi yendalo ingena isuka kwinxalenye esezantsi ye-absorber kwaye idlula kwi-absorber ukusuka ezantsi ukuya phezulu; Isisombululo se-MDEA esihlaziyiweyo ngokupheleleyo (isisombululo esingenamthungo) singena kwinxalenye ephezulu ye-absorber kwaye sidlula kwi-absorber ukusuka phezulu ukuya ezantsi. Isisombululo se-MDEA esijikelezayo kunye negesi yendalo zidibene ngokupheleleyo kwi-absorber. I-CO2 kwigesi iyafunxwa kwaye ingena kwisigaba solwelo. Izinto ezingafunxwayo zikhokelwa zisuka phezulu kwe-absorber kwaye zingene kwi-decarbonization gas cooler kunye ne-separator. Igesi evela kwi-decarbonization gas separator ingena kwi-feed gas drying unit, kwaye i-condensate iya kwi-flash tank.
Umxholo we-CO2 kwigesi yendalo ecociweyo ungaphantsi kwe-50ppmv.
Isisombululo se-MDEA esifunxa i-CO2 sibizwa ngokuba sisisombululo esityebileyo, esithunyelwa kwi-flash tower, kwaye igesi yendalo eveliswa yi-depressurization flash ithunyelwa kwinkqubo yamafutha. Emva kokutshintshiselana kobushushu phakathi kolwelo olutyebileyo olukhanyayo kunye nesisombululo (ulwelo oluthambileyo) oluphuma ezantsi kwi-regeneration tower, nyusa ubushushu bufike kwi-~98 ℃ kwinxalenye ephezulu ye-regeneration tower, kwaye wenze i-stripping regeneration kwi-regeneration tower de i-lean degree ye-lean liquid ifikelele kwi-index.
Ulwelo oluthambileyo oluphuma kwinqaba yokuvuselela ludlula kwisixhobo sokutshintsha ubushushu solwelo esityebileyo nesingenamandla kunye nesixhobo sokupholisa ulwelo oluthambileyo. Ulwelo oluthambileyo lupholiswa ukuya kuthi ga kwi-~40 ℃, lucinezelwe yipompo yolwelo oluthambileyo kwaye lungena luvela kwinxalenye ephezulu yenqaba yokufunxa.
Igesi ephumayo phezulu kwinqaba yokuvuselela ingena kwi-acid gas separator nge-acid gas cooler, igesi evela kwi-acid gas separator ithunyelwa kwinkqubo yokukhupha i-acid gas, kwaye i-condensate ithunyelwa kwi-flash separator emva kokuba icinezelwe yipompo yokubuyisela.
Umthombo wobushushu we-reboiler yenqaba yokuvuselela ufudunyezwa ngeoyile yokudlulisa ubushushu.
Izixhobo eziphambili zenkqubo yale yunithi yinqaba yokufunxa kunye nenqaba yokuvuselela.
Igesi yokutya iyunithi yokomisa
Le yunithi isebenzisa iteknoloji yokufunxa ubushushu ukuze yahlulwe kwaye icoceke. Iteknoloji yokufunxa ubushushu isekelwe ekufunxeni iimolekyuli zegesi kumphezulu wangaphakathi we-adsorbent (izinto eziqinileyo ezinemingxuma), kwaye isebenzisa iimpawu zokuba amandla okufunxa ubushushu be-adsorbent yegesi atshintsha ngobushushu obahlukeneyo kunye noxinzelelo. Phantsi kwemeko yokuba i-adsorbent ifunxa ngokukhetha iinxalenye ezahlukeneyo zegesi, ifunxa ezinye iinxalenye kwigesi exutyiweyo kubushushu obuphantsi kunye noxinzelelo oluphezulu. Iinxalenye ezingafunxwanga ziphuma kumaleko we-adsorber kwaye zifunxe ezi nxalenye zifunxwanga kubushushu obuphezulu kunye noxinzelelo oluphantsi ukuze kufunxe ubushushu obuphantsi kunye noxinzelelo oluphezulu. Iinqaba ezininzi zokufunxa zingasetyenziselwa ukufezekisa injongo yokwahlulwa kwegesi okuqhubekayo.
Iyunithi yokomisa igesi yokutya ixhotyiswe ngee-adsorbers ezimbini zokutshintsha, kuquka enye yokufunxa, enye yokuvuselela umoya obandayo.
Igesi yokufunxa evela kwiyunithi yegesi yokufunxa i-acidification ingena phezulu kwe-adsorber. Emva kokususa amanzi ngesihluzo se-molecular, iphuma ezantsi kwe-adsorber. Emva kokuphelelwa ngamanzi emzimbeni, igesi yendalo ingena kwiyunithi yokufunxa i-acidification igesi yokufunxa.
Iyunithi yokususa iihydrocarbon ezininzi zegesi yokutya isebenzisa inani elincinci legesi yokutya ecocekileyo njengesixhobo sokuvuthela esibandayo kunye nokuvuselela.
Igesi yokuvuselela idlula kuqala kwi-adsorber epholileyo ukusuka ezantsi ukuya phezulu, ize emva koko igesi yokuvuselela ifudunyezwe ukuya kubushushu bokuvuselela obuyi-180 ~ 220 ℃ nge-heater yokuvuselela, ize ingene ukusuka ezantsi kwe-adsorber ukuze i-hydrolyze kwaye ifunxe i-adsorbent. Igesi yokuvuselela iphuma phezulu kwi-dryer ize ingene kwi-regeneration gas separator emva kokuba ipholiswe yi-regeneration cooler. Emva kokwahlula ulwelo, ingena kwi-inlet ye-adsorption tower.
Emva kokudlula kwiyunithi, amanzi kwigesi yendalo eyomileyo yi-≤ 1ppm.
Izixhobo eziphambili yi-adsorption tower, i-regeneration heater, i-regeneration gas cooler, i-regeneration gas separator kunye ne-regeneration gas compressor.
Ixesha lokuthumela: Juni-03-2022