Ụlọ ọrụ ihe ọkụkụ dị elu nke China Obere LNG - skid na-agbanye LNG osisi LNG osisi skid - Rongteng

Liquefaction eke gas, nke a na-akpọ obere oge LNG, na-eme ka gas dị n'ime ya ghọọ mmiri mmiri site na ime ka ikuku gas dị jụụ n'okpuru nrụgide nkịtị ruo - 162 ℃. Ngwunye ikuku gas nwere ike ịchekwa ohere nchekwa na njem njem, ma nwee uru nke nnukwu uru calorific, arụmọrụ dị elu, na-eme ka nguzozi nke iwu ibu obodo, na-eme ka nchebe gburugburu ebe obibi, na-ebelata mmetọ obodo na ihe ndị ọzọ.

Liquefaction bụ isi nke mmepụta LNG. Ka ọ dị ugbu a, usoro mmịnye gas nke tozuru okè na-agụnye usoro mmiri mmiri cascade, usoro mmịpụta refrigerant agwakọta yana usoro mmịpụta na expander.

Cascade eke gas liquefaction Usoro na-eji dị iche iche esi esi nke refrigerant n'okpuru nkịtị mgbali iji belata refrigeration okpomọkụ nzọụkwụ site nzọụkwụ iji nweta nzube nke eke gas liquefaction.

Mixed refrigerant cycle (MRC) bụ usoro nke a na-eji ihe karịrị ụdị ise nke multi-component agwakọta refrigerants, dị ka C1 ~ C5 Hydrocarbons na N2, ka mmiri na-arụ ọrụ condense, evaporate na ịgbasa nzọụkwụ site nzọụkwụ iji nweta refrigeration ike dị iche iche okpomọkụ ọkwa, wee jiri nwayọọ nwayọọ na-ajụkwa na liquefy eke gas. Ngwakọta ngwakọta refrigerant liquefaction usoro na-ekewa n'ime ọtụtụ ụdị dị iche iche nke refrigeration okirikiri.

The liquefaction usoro na expander na-ezo aka usoro nke eke gas liquefaction site na iji elu mgbali refrigerant na-aghọta reverse Claude okirikiri refrigeration na adiabatic mgbasawanye nke turbo expander.

Atụmatụ usoro a gụnyere: nri gas nrụgide na-achịkwa na metering unit, eke gas ọcha unit na eke gas liquefaction unit, refrigerant nchekwa usoro, refrigerant ikesa usoro mkpakọ, LNG nchekwa na loading unit.

The eke gas na-abanye ọdụ na mbụ na-agafe site na nrụgide na-achịkwa na metering unit, nke na-aghọta na nrụgide ụkpụrụ na metering nke na-abata eke gas; Gas sitere n'okike na-abanye na ngalaba na-eme ka ikuku dị ọcha, ebe ikuku ikuku dị n'okpuru mwepụ CO2, iwepụ H2S na ọgwụgwọ akpịrị ịkpọ nkụ. A na-atụ aro usoro MDEA maka decarbonization na iwepụ H2S, usoro nsị mmiri nke molecular sieve nwere ụlọ elu atọ ma ọ bụ usoro mmiri mmiri TEG na-atụ aro maka akpịrị ịkpọ nkụ; Na A na-atụ aro ka iji BOG gbakere na abịakọrọ maka ikuku ọhụrụ;

A na-eme ka ikuku ikuku dị ọcha banye n'ime ikuku ikuku gas, ngwakọta refrigerant (MRC liquefaction usoro) ka akwadoro maka ikuku gas; A na-echekwa LNG liquefied na tankị nchekwa, a na-atụ aro usoro nchekwa ikuku na obere okpomọkụ maka nchekwa LNG. Otu tankị nchekwa ikuku dị ala nwere BG compressor, na BOG compressor na-eji nrụgide BOG tupu abanye n'ime molecular sieve dryer Regeneration, dabere na mgbapụta cryogenic iji nweta nrụnye.