Izisefo ze-molecular ze-Zeolite zidlala indima ebalulekile ekucutshungulweni kwegesi yemvelo ngokwenza imisebenzi ebalulekile yokuhlanza (njengokukhipha amanzi emzimbeni, ukukhishwa kwe-sulfurization, ne-decarbonization njll.) ngokusebenzisa i-adsorption ekhethiwe, ngakho-ke ithuthukisa ikhwalithi yegesi yemvelo futhi iqinisekise ukuhamba okuphephile.
Ukuphelelwa amanzi Kwegesi Yemvelo
Igesi yemvelo ikhiqizwa ngomhwamuko wamanzi, futhi ithwala ngisho nenani elithile lamanzi awuketshezi. Ukuba khona kwamanzi kugesi yemvelo kuyinto embi kakhulu, okwenza ukuphelelwa amanzi kwegesi yemvelo kube yisidingo. Ngokwesibonelo:
Amanzi kanye ne-methane kwenza iqhwa-njengama-hydrate aqinile ngaphansi kwezinga lokushisa eliphansi kanye nengcindezi ephezulu (njengasekuthuthweni kwamapayipi noma ezinqubweni zokuncibilika), okungavala amavalvu, amapayipi, nezinto zokusebenza, kubangele ukuphazamiseka kwezokuthutha.
Amanzi ahlangana ne-hydrogen sulfide noma i-carbon dioxide kugesi yemvelo ukuze akhiqize izinto ezine-asidi (i-sulfuric acid, i-carbonic acid), esheshisa ukugqwala kwamapayipi ensimbi nezinto zokusebenza futhi ifinyeze impilo yabo yesevisi.
Lapho igesi yemvelo idinga ukupholisa okujulile, njengoba igesi yemvelo ewuketshezi (LNG) idinga ukupholiswa ifike ku- -162℃, umswakama osele uzobanda futhi ulimaze izinto ezisetshenziswayo ezibalulekile njengezishintshisi zokushisa ze-cryogenic.
Izisefo zamangqamuzana, ezinobukhulu obufanayo bezimbotshana, zikhanga kakhulu ama-molecule amanzi. Umthamo wokukhangiswa kwamanzi uphezulu njengo-22% wesisindo sawo, esinganciphisa izinga lamazolo egesi yemvelo libe ngaphansi kwama-degree angama-70 futhi kuzuze ukuphelelwa amanzi emzimbeni okujulile.
I-Natural Gas Sweeting
Ubumnandi begesi yemvelo yinqubo ye-desulfurization kanye ne-decarbonization. I-hydrogen sulfide ne-carbon dioxide kugesi yemvelo ingenza ama-asidi (ngamanzi), futhi ibangele ukugqwala kwamapayipi nezinto zokusebenza. IHydrogen sulfide nayo iyigesi enobuthi ethinta impilo nokuphepha.
Isisefo samamolekyuli sihloselwe ukususa i-hydrogen sulfide ne-carbon dioxide iye ezingeni le-PPM noma ngisho ne-PPB. Lokhu kusiza ekwehliseni ukugqwala, ukwandisa inani lekhalori, futhi kuhlangatshezwane namazinga okuhweba egesi yemvelo ngekhwalithi nokokuthutha.
Ngaphezu kwesibabule esingaphili, izisefo zamangqamuzana zingakhangisa nesibabule esiphilayo njenge-methyl mercaptan, i-ethyl mercaptan, i-propyl mercaptan, i-methyl sulfide, ne-thiophene, konke ngenxa yendawo yazo enkulu ethize kanye nevolumu ye-pore.
I-Zeolite Molecular Sieves Yokucubungula Igesi Yemvelo
Thayipha 3A zeolite isisefo molecular: Ubukhulu bayo bembotshana yi-3Å, futhi isetshenziselwa kakhulu ukukhangisa ama-molecule amanzi anobubanzi obungaba ngu-2.8Å. Ingakwazi ukususa kahle umswakama kugesi yemvelo ngenkathi igwema ukufakwa kwama-hydrocarbons, iyenze ifanelekele ukuphelelwa amanzi kwegesi yemvelo.
Thayipha i-4A i-zeolite i-molecular sieve: Usayizi wayo wembotshana ngu-4Å, futhi ungakhanga ngokukhetha ama-molecule amanzi (ububanzi obungu-2.8Å). Igcina umthamo ophezulu wokukhangisa emazingeni okushisa aphezulu futhi ifanele ukomiswa okujulile kwegesi yemvelo. Kodwa-ke, kufanele kuqashelwe ukuthi ingakhanga amanye ama-hydrocarbons alula.
Thayipha isisefo semolekyuli ye-zeolite ye-zeolite: Usayizi wayo wembotshana ngu-5Å, futhi ingasetshenziswa ekucubunguleni igesi yemvelo ukuze kufakwe amanzi, ama-hydrocarbon alula, i-carbon dioxide, i-hydrogen sulfide, i-mercury, njll. Isibonelo, ukususa amanani e-hydrogen sulfide enhlanganisweni ye-methane nesikhutha.
Thayipha i-13X zeolite isisefo se-molecular: Usayizi wayo wembotshana ngu-10Å, futhi inamandla okukhangisa aqinile we-carbon dioxide, ingakhangisa ngokuphumelelayo izinhlanganisela zesulfure njenge-hydrogen sulfide nama-mercaptans, isuse ukungcola okunjengama-hydrocarbon asindayo nama-hydrocarbon anephunga elimnandi ezitshalweni ze-LNG.