Iyunithi Yokwelashwa Kwegesi Yesila yase-China Esezingeni Eliphezulu Abathekelisi - PSA decarbonization skid - Rongteng

Incazelo

I-skid yegesi yemvelo (i-decarbonization), iyithuluzi elibalulekile ekuhlanzeni noma ekwelapheni igesi yemvelo.

Okuqukethwe kwe-carbon dioxide kuzinga lekhwalithi yegesi yemvelo akufanele kube ngaphezu kuka-3%. Futhi i-carbon dioxide emanzini ngemva kokuba insimbi ine-corrosive enamandla kakhulu. Uma inani le-PH lifana, isilinganiso se-acidity ye-carbon dioxide nayo iphakeme, ngakho izinga lokugqwala kwe-carbon dioxide ensimbi nalo liphakeme.

I-Pressure swing adsorption (PSA) ubuchwepheshe obusha obusetshenziselwa ukuhlukanisa ingxube yegesi kubuchwepheshe bokuhlukanisa i-adsorption. Uma kuqhathaniswa nendlela evamile yokumunca amakhemikhali, ubuchwepheshe be-PSA buyakhanga ngokwezomnotho ukuze kukhishwe futhi kutholakale i-H2S ne-CO2 egesini yemvelo, futhi kuthuthukiswa ngamandla.

Ubuchwepheshe bokuhlukaniswa kwegesi ye-PSA bunezinzuzo zokusebenza okulula, ukulahlekelwa kwengcindezi ephansi, ukuphelelwa amandla kwamanzi ngenkathi kususwa i-CO2, indawo ephansi yamazolo yegesi ehlanzekile namanzi, futhi imikhiqizo ingahlangabezana nezidingo zokuthunyelwa kwegesi. I-PSA ingasetshenziselwa ukugxilisa ingqondo kwe-CO2 kanye ne-desulfurization ekhethiwe kugesi yemvelo.

Ishadi eligelezayo

I-Adsorption yenziwa ngaphansi kwengcindezi futhi i-desorption yenziwa ngaphansi kwengcindezi encishisiwe. Ngenxa yokuthi umjikelezo we-adsorption mfushane futhi ukushisa kwe-adsorption akukwazi ukuchithwa ngesikhathi, kungasetshenziselwa ukuchithwa. Ngakho-ke, izinga lokushisa lombhede we-adsorption obangelwa ukushisa kwe-adsorption nokushisa kwe-desorption kunoshintsho oluncane, olungabhekwa njengenqubo ye-isothermal. Ukusebenza kombhede ogxilile we-adsorption, noma ngabe i-adsorption swing yezinga lokushisa noma i-press swing adsorption, ngoba i-adsorbent idinga ukukhiqizwa kabusha, i-adsorption iyenzeka ngezikhathi ezithile. Embonini, imibhede emibili noma ngaphezulu yokukhanga iyasetshenziswa, ukuze ukukhangisa nokuvuselelwa kombhede we-adsorption kwenziwe ngokushintshana (noma ngokushintshana komjikelezo), ukuze kuqinisekiswe ukuqhubeka kwayo yonke inqubo ye-adsorption.

Izici ezisebenzayo

Ukusebenza kahle kwe-press swing adsorption decarbonization skid ngu-90%.CO2 ingahlukaniswa ngokushintsha kwengcindezi nokukhangiswa ngokomzimba, ngaphandle kokusabela kwamakhemikhali. Ngaphandle kokususwa kwe-CO2, ubuchwepheshe be-PSA busetshenziswa kabanzi ekubuyiseleni nasekuhlanzweni kwe-H2, CH4, CO, CO2 namanye amagesi.