High Quality China LNG Plant Factory - 0.7 ~ 3.5 MMSCFD Customerized ang'onoang'ono LNG chomera ndondomeko kapena LNG liquefaction chomera - Rongteng

Kuyerekeza ndi kusankha njira zamakono

The ndondomeko ya liquefaction gasi chikuphatikizapo pretreatment (kuyeretsedwa) yaiwisi mpweya, liquefaction (kapena LNG liquefaction chomera), refrigerant kufalitsidwa psinjika, kusungiramo katundu, Kutsegula ndi dongosolo wothandiza, etc. ndondomeko yaikulu zikuphatikizapo kuyeretsa yaiwisi mpweya ndi liquefaction wa oyeretsedwa mpweya.

Kusankha njira yoyeretsera gasi

Monga gasi yaiwisi, mpweya wachilengedwe uyenera kuyeretsedwa bwino kwambiri usanachitike liquefaction.Ndiko kuchotsa gasi wa asidi, madzi ndi zonyansa mu gasi wa chakudya, monga H2S, CO2, H2O, Hg ndi ma hydrocarboni onunkhira, kuti tipewe kutsekereza ndi kuwonongeka kwa zida ndi mapaipi chifukwa cha kuzizira ndi kutentha kochepa. gasi mu chomera cha LNG.

Kuchuluka kovomerezeka kwamafuta amafuta a LNG

Malingana ndi deta ya gasi wa chakudya, madzi omwe ali mu gasi wodyetsa amaposa muyezo ndipo ayenera kuyeretsedwa.

A) Kusankha njira ya deacidification

H2S ndi CO2 zomwe zili mu gasi wachilengedwe zimatchedwa gasi wa asidi. Kukhalapo kwawo kudzachititsa kuti chitsulo chiwonongeke komanso kuwononga chilengedwe.Kuonjezera apo, ngati CO2 ili yochuluka kwambiri, mtengo wa calorific wa gasi wachilengedwe udzachepetsedwa.Choncho, zomwe zili mu zigawo za asidi mu gasi ziyenera kuyendetsedwa mosamalitsa kuti zikwaniritse zofunikira za ndondomeko ndi khalidwe la mankhwala.

Pali njira yoyamwitsa zosungunulira, njira yoyamwitsa thupi, njira yochepetsera makutidwe ndi okosijeni ndi njira yoyezera ma molecular sieve pochotsa mpweya wa asidi kuchokera ku gasi wachilengedwe. Zosungunulirazo zimakhudzidwa ndi zigawo za asidi (makamaka CO2) mu mpweya wa chakudya kupanga mankhwala. Madzi ochuluka omwe amamwa mpweya wa asidi amatha kuwola ndikutulutsa mpweya wa asidi pansi pa kutentha ndi kuchepetsa kupanikizika, kuti azindikire kusinthika ndi kugwiritsa ntchito zosungunulira.

Pankhani ya kugwiritsa ntchito mphamvu, kuchuluka kwa mankhwala, ndalama zogulira ndi ntchito, njira yamadzimadzi ya MDEA amine ndiyo njira yoyenera kwambiri, motero njira yamadzimadzi ya MDEA amine imasankhidwa kuti iwonongeke mu chiwembuchi.

B) Kusankha njira yochepetsera madzi m'thupi

Njira yowonongeka kwa gasi nthawi zambiri imaphatikizapo kuchepa kwa kutentha kwa thupi, kutsekemera kwa desiccant ndi kuyamwa kwa zosungunulira. Kuzizira kolekanitsa kumagwiritsidwa ntchito makamaka kupewa hydrate ya gasi wachilengedwe pamene kutentha kuli kochepa, koma kutentha kwake kovomerezeka kumakhala kochepa, komwe sikungathe kukwaniritsa zofunikira za liquefaction ya gasi; zosungunulira mayamwidwe zambiri zikuphatikizapo anaikira asidi (zambiri anaikira phosphoric asidi ndi zina zidulo organic), glycol (amakonda ntchito triethylene glycol), etc., koma njira zimenezi ndi otsika kuchepa madzi m`thupi kuya, amene sangagwiritsidwe ntchito cryogenic unit; njira zolimba za desiccant zowonongeka ndi njira ya silica gel, njira ya molecular sieve kapena kuphatikiza njira ziwirizi.

Kusungunuka kwa gasi wachilengedwe ndi kuchepa kwa madzi m'thupi kuyenera kutengera njira yolimba ya adsorption. Chifukwa sieve ya molekyulu imakhala ndi kusankhidwa kwamphamvu kwa adsorption, mawonekedwe apamwamba adsorption pansi pa nthunzi wochepa wamadzi kupanikizika pang'ono, ndipo amatha kuchotsa mpweya wotsalira wa asidi nthawi yomweyo, 4A molecular sieve imagwiritsidwa ntchito ngati dehydration adsorbent mu chiwembu ichi.

C) Kusankha njira yochotsera mercury

Pakali pano, pali makamaka mitundu iwiri ya njira zochotsera mercury: njira ya HGSIV molecular sieve adsorption ya kampani ya UOP ku United States ndi momwe zimachitikira pakati pa mercury ndi sulfure pogwiritsa ntchito mpweya wa sulfure wopangidwa ndi sulfure kuti apange mercury sulfide, yomwe imayikidwa pa carbon activated. Zakale ndizokwera mtengo komanso zoyenera pamwambowu wokhala ndi mercury wambiri; yotsirizirayi ndi yotsika mtengo komanso yoyenera pamwambowu wokhala ndi mercury yotsika.

Kumbali imodzi, mtengo wa ntchito ya HGSIV molekyulu sieve ndi wokwera kwambiri; kumbali ina, mercury zomwe zili mu gasi wodyetsa wa unityi ndizochepa. Choncho, ntchito sulfure impregnated mpweya Mercury kuchotsa ndondomeko, kampani ali zinachitikira bwino.