Ebumnuche nke ọgwụgwọ tupu oge eruo maka osisi LNG

Wepụ ihe ndị na-emerụ ahụ dị na gas nri na ihe ndị nwere ike ịgbaze n'oge usoro cryogenic. Dịka hydrogen sulfide, carbon dioxide, mmiri, hydrocarbon dị arọ na mercury. Gas nri nke ụdị osisi LNG dị iche iche na-agwọ dị iche iche, yabụ ụzọ na usoro ọgwụgwọ dịkwa iche.
Asịd gas na-abụkarị H2S, CO2, cos, RSH na ihe ndị ọzọ na-adịghị ọcha na gas. A na-akpọkarị iwepụ acid gas desulfurization na decarbonization, ma ọ bụ desulfurization n'ụzọ ọdịnala. Mgbe a na-asachapụ gas eke, enwere ike iwepụ H2S na CO2 n'otu oge, n'ihi na enwere ike iwepụ ihe abụọ a ọnụ na usoro alcohol amine na molekul sieve adsorption cleaning.
2.3.2 nhọrọ nke usoro desulfurization
N'ime ihe e ji eme ka gas dị ọcha, e nwere ụzọ atọ a na-ejikarị eme ka ọ dị ọcha, ya bụ, ụzọ mmanya amine, ụzọ ekpo ọkụ (benfied) na ụzọ sulfonol amine.
Mercury: ọnụnọ nke mercury nwere ike imebi akụrụngwa aluminom nke ukwuu. Mgbe Mercury (gụnyere elemental mercury, ion mercury na organic mercury compounds) dị, aluminom ga-emeghachi omume na mmiri iji mepụta ngwaahịa nchara ọcha, nke ga-emebi ihe onwunwe nke aluminom nke ukwuu. Obere mercury zuru oke imebi akụrụngwa aluminom nke ukwuu, Mercury ga-ebutekwa mmetọ gburugburu ebe obibi na mmerụ ahụ nye ndị ọrụ n'oge mmezi. Ya mere, ọdịnaya nke mercury kwesịrị ịkpa oke. Mwepụ mercury dabere na mmeghachi omume nke mercury na sọlfọ na ihe na-eme ka ihe dị n'ime catalytic reactor.
Nnukwu hydrocarbon: na-ezo aka na hydrocarbons dị n'elu C5 +. Na hydrocarbons, mgbe ibu molekul na-agbanwe site na obere gaa na nnukwu, ebe isi mmiri ya na-agbanwe site na obere gaa na elu. Ya mere, n'oge usoro nke ikuku gas na-agbakọta, a na-ebu ụzọ chịkọta nnukwu hydrocarbons. Ọ bụrụ na ekewapụghị nnukwu hydrocarbon mbụ, ma ọ bụ kewaa ya mgbe ọ gbasasịrị, nnukwu hydrocarbon nwere ike ifriizi ma gbochie akụrụngwa ahụ. A na-ewepụ nnukwu hydrocarbons site na sieve molekul na ihe ndị ọzọ na-adọrọ adọrọ n'oge mmiri na-akpọnwụ, ebe ndị ọzọ na-ekewapụ site na nkewa cryogenic.
Cos: enwere ike ịgba mmiri ya site na obere mmiri iji mepụta H2S na CO2, na-akpata ire ere na akụrụngwa ahụ. Ọ dị mfe ịgwakọta ya na propane eweghachitere. A na-ewepụkarị ya na H2S na CO2 mgbe a na-ewepụ acid.
Helium: Gas sitere n'okike bụ isi iyi helium, a ga-ekewapụ ya ma jiri ya mee ihe. O nwere uru dị ukwuu site na njikọta nkewa akpụkpọ ahụ na nkewa cryogenic.
Nitrogen: mmụba nke ọdịnaya ya ga-eme ka mwepụ gas sitere n'okike sie ike karị. A na-ejikarị usoro flash ikpeazụ eme ihe maka iwepụ LNG n'ụzọ nhọrọ.
Isi ihe dị na gas eke bụ methane (CH4), ebe isi mmiri ya bụ 111k (- 162 ℃).
Njupụta nke methane mmiri mmiri n'ebe a na-esi mmiri bụ 426kg / m3, njupụta nke methane gas na steeti ọkọlọtọ bụ 0.717kg / m3, yana ọdịiche dị ihe dị ka ugboro 600. Nnukwu ọdịiche dị na olu bụ isi ihe kpatara nchekwa na mbugharị gas eke.