Taw qhia
Liquefaction natural gas, luv luv hu ua LNG, yog condensing natural gas rau hauv cov kua los ntawm txias lub gaseous natural gas nyob rau hauv ib txwm siab mus rau - 162 ℃. Natural gas liquefaction tuaj yeem txuag tau ntau qhov chaw khaws cia thiab kev thauj mus los, thiab muaj qhov zoo ntawm cov nqi calorific loj, kev ua haujlwm siab, ua kom muaj kev sib npaug ntawm kev tswj hwm hauv nroog, ua rau muaj kev tiv thaiv ib puag ncig, txo cov pa phem hauv nroog thiab lwm yam.
Liquefaction yog lub hauv paus ntawm LNG ntau lawm thiab skid mounted LNG cog. Tam sim no, cov txheej txheem ntawm cov roj ntsha liquefaction feem ntau suav nrog cov txheej txheem cascade liquefaction, cov txheej txheem sib xyaw ua kua liquefaction thiab cov txheej txheem liquefaction nrog expander.
Cascade natural gas liquefaction txheej txheem siv cov ntsiab lus sib txawv ntawm cov tub yees nyob rau hauv ib txwm siab kom txo cov tub yees kub ib kauj ruam los ntawm kauj ruam kom ua tiav lub hom phiaj ntawm cov roj liquefaction.
Mixed refrigerant cycle (MRC) yog cov txheej txheem uas ntau tshaj tsib yam ntawm cov khoom siv sib xyaw ua ke, xws li C1 ~ C5 Hydrocarbons thiab N2, yog siv los ua cov kua dej ua haujlwm kom condense, evaporate thiab nthuav cov kauj ruam los ntawm kauj ruam kom tau txais cov tub yees muaj peev xwm ntawm kub sib txawv, thiab ces maj mam txias thiab liquefy natural gas. Cov txheej txheem sib xyaw refrigerant liquefaction tau muab faib ua ntau hom tub yees.
Cov txheej txheem liquefaction nrog expander yog hais txog cov txheej txheem ntawm cov roj liquefaction los ntawm kev siv cov tub yees txias kom paub txog qhov rov qab Claude cycle refrigeration nrog adiabatic expansion ntawm turbo expander.
Cov txheej txheem txheej txheem feem ntau suav nrog: pub roj siab tswj thiab ntsuas chav ntsuas, chav ntsuas roj purification thiab natural gas liquefaction unit, refrigerant cia system, refrigerant circulating compression system, LNG cia thiab chaw thau khoom.
Tsim parameter
Txhawm rau tsim LNG Plant Skid, peb xav tau cov kev ntsuas hauv qab no.
1) Cov yam ntxwv ntawm cov nroj tsuag tsim:
Pub roj ntws
Pub roj siab
Pub roj kub
Dawb dej cov ntsiab lus ntawm pub roj
2) Cov ntsiab lus pub roj muaj pes tsawg leeg (mole%)
3) Khoom specification:
Liquefied natural gas:
Qhov hluav taws xob siab
Subcooling kub nyob rau hauv lub qhov hluav taws xob siab
Cov ntsiab lus nitrogen siab tshaj plaws
Cov ntsiab lus carbon dioxide siab tshaj plaws
