Yakakwira Hunhu China LNG Gasi Kudyara Mafekitori - Yakagadzirirwa 50 × 104m3 / D gasi chaiwo liquefaction chirimwa - Rongteng

Nhanganyaya

Kuvakwa kweprojekti 50 × 10⁴m³/ D yakasikwa gasi liquefaction purojekiti uye zvivakwa zvinotsigira uye imwe 10000 m3 LNG yakazara simba tank. Iwo makuru ekuita mayuniti anosanganisira kudyisa gasi kudzvanywa, decarbonization unit, dehydration unit, mercury uye inorema hydrocarbon yekubvisa unit, liquefaction unit, refrigerant storage, flash steam pressurization, LNG tank purazi uye kurodha zvivakwa.

Ko iyo pre-liquefaction yegasi rechisikigo inoshanda sei?

Rukova rwechikafu chezvirimwa runouya muchimiro chine gasi nepombi. Gasi rechisikigo rinobviswa pasi rine tsvina, mvura uye zvimwe zvinwiwa zvinosanganisirwa nazvo, saka kunyungudika kusati kwaitika, gasi rinoda kupinda nenzira yekurapa kubvisa zvinhu zvisingadiwi. Iyo gasi inopinda nemunhevedzano yemidziyo, compressors uye pombi uko gasi inoparadzaniswa zvishoma nezvishoma kubva kune inorema mvura uye tsvina.

Kutanga, mvura uye condensate inobviswa, inoteverwakubviswa kweasidhi gasi(carbon dioxide, CO2), hydrogen sulfide (H2S) uye mercury (Hg). Zvinhu izvi hazvidiwe, sezvo zvingakonzeresa kuumbwa kwechando panguva yekunyunguduka uye kuora mumapaipi uye LNG heat exchangers. Musanganiswa wasara unodzikiswa, uye zvimwe, zvinorema, zvinwiwa zvegasi zvechisikigo zvinobva zvaparadzaniswa nemusanganiswa kusati kwaitwa liquefaction. Mahydrocarbon akabviswa anogona kuchengetwa uye kutengeswa zvakasiyana. Gasi rasara rinonyanya kuve nemethane uye imwe ethane, iyo inounzwa mukunyunguduka.

Liquefaction yeLNG inoshanda sei?

Kutakura gasi rakamanikidzwa nzendo refu nepombi kunogona kudhura uye kutora nguva, asi nekutonhodza gasi rechisikigo kusvika -162°C, rinoshanduka kuita chinhu chemvura, uye vhoriyamu yaro inodzikira ka600. Izvi zvinoita kuti zvikwanise kutakura gasi nengarava, uye kuita uku kunoitwa kuti kugoneke pachirimwa cheLNG. Iyo liquefaction uye LNG yekutonhora maitiro yakavakirwa pane thermodynamic firiji kutenderera, uye inoitika mune cryogenic heat exchangers, iyo inotora kupisa kubva mugasi rechisikigo. Flash gasi neBOG inogona kushandiswa sehuni yematurbines anoshandiswa pakugadzira magetsi.

Isu tinonyanya kupatsanura pakati pemhando mbiri huru dzekuita liquefaction: iyo classical cascade process apo akasiyana mafiriji anofenda patembiricha dzakasiyana anoshandiswa, uye musanganiswa wefiriji kutenderera uko kunoramba kuripo, musanganiswa mumwe wemafiriji unotonhodzwa. Chero nzira, iyo yekupedzisira chigadzirwa iLNG, iyo inochengetwa mumatangi e cryogenic panzvimbo isati yatumirwa.