Ukuqhathanisa nokukhethwa kobuchwepheshe
Inqubo yokuncibilikisa igesi yemvelo ngokuyisisekelo ifaka phakathi ukwelashwa kwangaphambili kwegesi yokuphakelwa (ukuhlanzwa), ukuncibilikisa uketshezi, ukucindezelwa komjikelezo wesiqandisi, ukugcinwa komkhiqizo, ukulayisha kanye nezinhlelo ezisizayo. Ukugeleza kwenqubo eyinhloko kufaka phakathi ukuhlanzwa kwegesi yokuphakelwa kanye nokuncibilikisa uketshezi kwegesi okuhlanziwe.
Ukukhethwa kwenqubo yokuhlanzwa kwegesi yemvelo
Igesi yemvelo njengegesi yokuphakelayo kumele ihlanzwe kahle ngaphambi kokuyincibilikisa. Okusho ukuthi, susa igesi ene-asidi, amanzi kanye nokungcola kugesi yokuphakelayo, njenge-H2S, CO2, H2O, Hg kanye nama-hydrocarbon anuka kamnandi, ukuze kuvinjelwe ukuthi angaqandisi ekushiseni okuphansi futhi kuvimbe futhi kugqwale imishini namapayipi.
A) Ithebula 1-1 libala amazinga okwelashwa kwangaphambi kokwelashwa kwegesi yokuphakelwa esitshalweni se-LNG kanye nokuqukethwe okuphezulu kokungcola.
Ithebula 1-1 okuqukethwe okuphezulu okuvumelekile kokungcola kwegesi yokuphakelayo ye-LNG
| Ukungcola | Umkhawulo wokuqukethwe | Isisekelo |
| H2I-THE | ＜1ppmV | A (kuvunyelwe ukudlula umkhawulo wokuqedwa ngaphandle kokunciphisa ukukhiqizwa) |
| I-CO2 | 50～100ppmV | B (Ukuncibilika Okuphelele) |
| H2S | ＜4ppmV | C (izimfuneko zobuchwepheshe zomkhiqizo) |
| Inani eliphelele lesibabule | 10～50mg/Nm3 | C |
| I-Hg | ＜0.01μg/Nm3 | A |
| I-hydrocarbon enuka kamnandi | ≤10ppmV | A noma B |
| Ama-hydrocarbon aphelele e-naphthenic | ≤10ppmV | A noma B |
Kusukela kudatha yegesi yokuphakelayo, okuqukethwe yi-carbon dioxide kugesi yokuphakelayo kudlula indinganiso futhi kumele kuhlanzwe.
Inqubo ye-MDEA amine liquid iyinqubo efaneleke kakhulu maqondana nokusetshenziswa kwamandla, isikali sokwelashwa kanye nezindleko zokutshalwa kwezimali kanye nokusebenza. Ngakho-ke, inqubo ye-MDEA amine liquid ikhethwa ukuze kukhishwe i-acidity gas kulolu hlelo.
B) Ukukhetha inqubo yokuphelelwa amanzi emzimbeni
Ukuba khona kwamanzi kugesi yemvelo kuvame ukuholela emiphumeleni emibi kakhulu: ngaphansi kwezimo ezithile, amanzi kanye negesi yemvelo kwakha i-hydrate ukuvimba ipayipi futhi kuthinte inqubo yokupholisa ukuncibilika; Ngaphezu kwalokho, ukuba khona kwamanzi kuzophinde kubangele ukusetshenziswa kwamandla okungadingekile; Ngenxa yokushisa okuphansi kokuncibilika kwegesi yemvelo kanye nokuba khona kwamanzi, imishini izoqandiswa futhi ivalwe, ngakho-ke kumele incishiswe amanzi.
Inqubo yokuphelelwa amanzi emzimbeni ngegesi yemvelo ngokuvamile kuhlanganisa izigaba ezintathu: ukuphelelwa amanzi emzimbeni okuphansi kwezinga lokushisa, ukumuncwa kwe-desiccant eqinile kanye nokumuncwa kwe-solvent. Ukuhlukaniswa kokuqandisa kusetshenziswa kakhulu ukugwema i-hydrate lapho izinga lokushisa legesi yemvelo liphansi. Kodwa-ke, izinga lokushisa eliphansi elikuvumelayo lilinganiselwe futhi alikwazi ukuhlangabezana nezidingo zoketshezi lwegesi yemvelo; Ukumuncwa kwe-solvent kuvame ukufaka i-acid egxilile (ngokuvamile i-organic acid efana ne-phosphoric acid egxilile), i-glycol (i-triethylene glycol esetshenziswa njalo), njll., kodwa lezi zindlela zinokujula okuphansi kokuphelelwa amanzi emzimbeni futhi azikwazi ukusetshenziswa kumayunithi e-cryogenic; Izindlela ezivamile zokuphelelwa amanzi emzimbeni ze-desiccant eqinile indlela ye-silica gel, indlela yesihlungi sama-molecule noma inhlanganisela yalezi zindlela ezimbili.
Indlela yokumunca eqinile kumele isetshenziswe uketshezi lwegesi yemvelo ukuphelelwa amanzi emzimbeniNgenxa yokuthi isihlungi sama-molecule sinezinzuzo zokukhetha okunamandla kokumunca, izici eziphezulu zokumunca ngaphansi kwengcindezi engaphelele yomhwamuko wamanzi ophansi kanye nokususwa okwengeziwe kwegesi ye-asidi esele, isihlungi sama-molecule se-4A sisetshenziswa njenge-adsorbent yokuphelelwa amanzi emzimbeni kulesi siphakamiso.
C) Ukukhethwa kwenqubo yokususa i-mercury
Njengamanje, kunezinqubo ezimbili eziyinhloko zokususa i-mercury: indlela ye-hgsiv molecular sieve adsorption yenkampani ye-UOP e-United States kanye ne-sulfur activated carbon efakwe i-sulfur ukuze i-mercury isabele ne-sulfur ukuze ikhiqize i-mercury sulfide futhi iyimunce ku-activated carbon. Eyokuqala inezindleko eziphezulu futhi ifaneleka ngezikhathi ezinokuqukethwe okuphezulu kwe-mercury; Eyokugcina inezindleko eziphansi zokusebenza futhi ifaneleka ngezikhathi ezinokuqukethwe okuphansi kwe-mercury.
Ngakolunye uhlangothi, izindleko zokusebenza zesihlungi sama-molecule se-hgsiv ziphakeme kakhulu; Ngakolunye uhlangothi, okuqukethwe yi-mercury kugesi yokuphakelayo yeyunithi kuphansi kakhulu. Ngakho-ke, inkampani inolwazi oluphumelelayo ekusebenziseni ikhabhoni esebenzayo efakwe i-sulfur ukuze kususwe i-mercury.
Xhumana nathi:
I-Sichuan Hengzhong Automation Equipment Co., Ltd.
www.rtgastreat.com
I-imeyili: sales01@rtgastreat.com
Ucingo/i-whatsapp: +86 138 8076 0589
Ikheli: No. 8, Isigaba 2 soMgwaqo iTengfei, iSifundazwe saseShigao,
Indawo Entsha yaseTianfu, Meishan City, Sichuan, China 620564
No. 8, Isigaba 2 soMgwaqo iTengfei, iSifundazwe saseShigao,
Isikhathi sokuthunyelwe: Disemba-26-2022