Mmiri mmiri na-ekpo ọkụ (LNG) bụ gas sitere n'okike, nke kachasị methane, nke emechara ka ọ bụrụ mmiri mmiri maka ịdị mfe na nchekwa nke nchekwa na njem. Ọ na-ewe ihe dịka 1/600 nke oke gas sitere na steeti gas.
Anyị na-enye Osisi Liquefaction Natural gas na obere (obere) na obere nha. Ikike nke osisi na-ekpuchi site na 13 ruo ihe karịrị 200 Ton / ụbọchị nke mmepụta LNG (20,000 ruo 300,000 Nm).3/d).
Nri gas:
- ● Oghere gas gbachiri agbarụ
- ● gas jikọtara / ọkụ
- ● Biogas
- ● gas pipeline
Osisi liquefaction LNG zuru oke na-agụnye usoro atọ: usoro usoro, usoro njikwa ngwá ọrụ na usoro ịba uru. Dị ka isi mmalite ikuku dị iche iche si dị, enwere ike ịgbanwe ya.
Dị ka n'ezie ọnọdụ nke gas isi iyi, anyịnabata usoro kachasị mma na atụmatụ ego kachasị mma iji mezuo ihe dị iche iche chọrọ nke ndị ahịa.Ngwá ọrụ skid na-eme ka njem na nrụnye dị mfe karị.
1. Usoro usoro
A na-agbanye gas sitere n'okike na-eri nri mgbe nzacha, nkewa, ụkpụrụ nrụgide na metering, wee banye na usoro pretreatment gas. Mgbe e wepụrụ CO2, H2S, Hg, H2 O na hydrocarbons dị arọ, ọ na-abanye n'ime igbe oyi mmiri mmiri. Mgbe ahụ Ọ na-mma na efere fin okpomọkụ Exchanger, denitrified mgbe liquefaction, na-esote subcooled, throttled na flashed na flash tank, na ikpeazụ, ndị kewapụrụ mmiri mmiri na-abanye n'ime LNG nchekwa tank dị ka LNG ngwaahịa.
Mpempe akwụkwọ nke skid mounted LNG Plant bụ nke a:
Usoro usoro nke cryogenic LNG Plant gụnyere:
- ● Nri gas nzacha, nkewa, ụkpụrụ nrụgide na metering unit;
- ● Na-enye ngalaba nrụgide gas
- ● Ngalaba ọgwụgwọ (gụnyere deacidification, akpịrị ịkpọ nkụ na mwepụ hydrocarbon dị arọ, mercury na iwepụ uzuzu);
- ● MR proportioning unit na MR mkpakọ okirikiri nkeji;
- ● LNG liquefaction unit (gụnyere denitrification unit);
1.1 Atụmatụ nke usoro usoro
1.1.1 Nri gas pretreatment unit
Usoro usoro nke feed gas pretreatment unit nwere àgwà ndị a:
- ● Deacidification na MDEA ngwọta nwere uru nke obere ụfụfụ, obere corrosiveness na obere amine ọnwụ.
- ● A na-eji adsorption molecular sieve eme ihe maka akpịrị ịkpọ nkụ miri emi, ọ ka nwekwara uru mgbasa ozi dị elu ọbụlagodi n'okpuru obere ikuku ikuku mmiri.
- ● Iji sọlfọ-impregnated carbon arụ ọrụ wepụ mercury dị ọnụ ala. Mercury na-emeghachi omume na sọlfọ na sọlfọ gbara arụrụ arụ ọrụ iji mepụta mercury sulfide, nke a na-etinye na carbon arụ ọrụ iji nweta ebumnuche nke iwepụ mercury.
- ● Ihe nzacha nkenke nwere ike nyochaa sieve molecular na uzuzu carbon arụ ọrụ n'okpuru 5μm.
1.1.2 Liquefaction na refrigeration unit
Usoro usoro ahọpụtara nke liquefaction na refrigeration unit bụ MRC (mixed refrigerant) refrigeration okirikiri, nke bụ obere ike oriri. Usoro a nwere ike kachasị dị ala n'etiti ụzọ nju oyi a na-ejikarị eme ihe, na-eme ka ọnụahịa ngwaahịa na-asọmpi n'ahịa. Akụkụ nke refrigerant bụ nke na-adabereghị na ngalaba mkpakọ na-ekesa. N'oge a na-arụ ọrụ, akụkụ nke nha na-emejupụta refrigerant na ngalaba mkpakọ na-ekesa, na-ejigide ọnọdụ ọrụ kwụsiri ike nke ngalaba mkpakọ na-ekesa; Mgbe emechiri unit ahụ, akụkụ nke nha nwere ike ịchekwa refrigerant site na akụkụ nrụgide dị elu nke ngalaba mkpakọ na-ewepụghị refrigerant. Nke a nwere ike ọ bụghị naanị ịchekwa refrigerant, kamakwa belata oge mmalite ọzọ.
A na-agbaji valvụ niile dị na igbe oyi, ọ nweghịkwa njikọ flange n'ime igbe oyi iji belata ebe mgbapu nwere ike na igbe oyi.
1.2 Isi akụrụngwa nke nkeji ọ bụla
| S/N | Aha otu | Nnukwu akụrụngwa | |
| 1 | Nri gas filtration nkewa na nhazi unit | Ihe nkesa nzacha nri gas, igwe na-ebugharị, onye na-ahụ maka nrụgide, mkpakọ gas nri | |
| 2 | Ngalaba ọgwụgwọ mbụ | Ngalaba deacidification | Absorber na regenerator |
| Ngalaba ịkpọ nkụ | Ụlọ elu adsorption, igwe na-ekpo ọkụ na-ekpo ọkụ, ihe nju oyi gas na-eme ka ọ dị ọhụrụ na nkesa gas | ||
| Ngalaba na-ewepu hydrocarbon dị arọ | Ụlọ elu adsorption | ||
| Mwepụ Mercury na ngalaba filtration | Ihe na-ewepụ Mercury na nzacha uzuzu | ||
| 3 | Ngalaba mmiri mmiri | Igbe oyi, ihe na-ekpo ọkụ efere efere, ihe nkesa, ụlọ elu denitrification | |
| 4 | Ngwakọta refrigerant agwakọta | Igwe mmiri na-ekesa refrigerant na tank nke na-ekesa refrigerant | |
| 5 | Ngalaba na-ebunye LNG | Sistemụ nbudata | |
| 6 | Ngalaba mgbake bog | Bog regenerator | |
2. Usoro njikwa ngwá ọrụ
Iji nyochaa nke ọma usoro mmepụta nke akụrụngwa zuru oke, yana iji hụ na arụ ọrụ a pụrụ ịdabere na ya na ịrụ ọrụ na nhazi dị mma, usoro njikwa ngwá ọrụ gụnyere:
Sistemụ njikwa ekesa (DCS)
Sistemụ akụrụngwa nchekwa (SIS)
Sistemụ Mkpu Mkpu ọkụ na Gas (FGS)
Igwe onyonyo mechiri emechi (CCTV)
Usoro nyocha
Na ngwá ọrụ dị elu (flowmeter, analyzer, temometa, gage nrụgide) na-emezu ihe achọrọ. Usoro a na-enye nhazi zuru oke, ọrụ nhazi na nlekota oru, gụnyere nhazi data usoro, njikwa mechiri emechi, ọnọdụ nlekota oru ngwá ọrụ, mkpuchi mkpuchi na ọrụ, nhazi data oge na ngosi, ọrụ na-emekarị, ihe ngosi eserese, ọrụ ndekọ ndekọ ọrụ na ọrụ. ọrụ ndị ọzọ. Mgbe enwere ihe mberede na ngalaba mmepụta ma ọ bụ usoro FGS na-eziga mgbaàmà mkpu, SIS na-eziga mgbama nchebe nchebe iji chebe ngwá ọrụ dị na saịtị ahụ, na usoro FGS na-agwa ndị ọrụ ọkụ ọkụ mpaghara n'otu oge ahụ.
3. Utility usoro
Usoro a na-agụnye: ngwá ọrụ ikuku unit, nitrogen unit, okpomọkụ nnyefe mmanụ unit, desalted mmiri unit na jụrụ ikesa mmiri unit.
