Yakakwira Hunhu China Mafuta Uye Gasi Multiphase Yekutakura Factory - diki skid yakasungirirwa LNG Liquefaction chirimwa - Rongteng

Liquefied natural gas (LNG) igasi rechisikigo, kunyanya methane, iro rakatonhodzwa kusvika pachimiro chemvura kuitira nyore uye kuchengetedzeka kwekuchengetedza uye kutakura. Zvinotora anenge 1/600th huwandu hwegasi rechisikigo munzvimbo ine gasi.

Isu tinopa Natural Gasi Liquefaction Zvidyarwa mune micro (mini) uye diki. Kugona kwezvidyarwa kunovhara kubva pagumi nemashanu kusvika kune anopfuura mazana maviri matani / zuva rekugadzirwa kweLNG (18,000 kusvika 300,000 Nm).³/d).

Feed gasi:

• ● Nzvimbo dzegasi dzakavharwa
• ● Gasi rakabatana / rinopisa
• ● Biogas
• ● Gasi repombi

Iyo yakazara LNG liquefaction chirimwa inosanganisira matatu masisitimu: process system, chiridzwa chekudzora system uye utility system. Maererano nemhando dzakasiyana dzemhepo, inogona kuchinjwa.

Zvinoenderana nemamiriro chaiwo egasi sosi, isu tinotora yakanakisa maitiro uye yakanyanya hupfumi chirongwa chekusangana nezvinodiwa zvakasiyana zvevatengi. Skid yakaiswa michina inoita kuti zvekufambisa uye kuisirwa zvive nyore.

1. Process system

Iyo yekudyisa gasi rechisikigo inomanikidzwa mushure mekusefa, kupatsanurwa, kudzvanywa mutemo uye metering, uye yozopinda mugasi rechisikigo pretreatment system. Mushure mekubvisa CO₂, H₂S, Hg, H₂O uye heavy hydrocarbons, inopinda mu liquefaction cold box. Zvadaro Inotonhodzwa mundiro fin heat exchanger, denitrified mushure mekuita liquefaction, uye inotevera subcooled, throttled uye kupenya kune flash tank, uye chekupedzisira, iyo yakaparadzaniswa yemvura chikamu inopinda muLNG yekuchengetedza tangi seLNG zvigadzirwa.

Iyo inoyerera ye skid yakamisikidzwa LNG Chidyara yakaita seinotevera:

Iyo process system ye cryogenic LNG Plant inosanganisira:

• ● Kudyisa gasi filtration, kupatsanurwa, pressure regulation uye metering unit;
• ● Feed gasi pressurization unit
• ● Pretreatment unit (kusanganisira deacidification, dehydration uye heavy hydrocarbon kubvisa, mercury uye kubvisa guruva);
• ● MR proportioning unit uye MR compression cycle unit;
• ● LNG liquefaction unit (kusanganisira denitrification unit);

1.1 Zvimiro zve process system

1.1.1 Feed gasi pretreatment unit

Iyo nzira yekudyira gasi pretreatment unit ine zvinotevera maitiro:

• ● Deacidification ine MDEA mhinduro ine hunhu hwekupupa hudiki, kuderera kwekuora uye kurasikirwa kudiki kwemamine.
• ● Molecular sieve adsorption inoshandiswa kudzikisa mvura yakadzika, uye ichiri nepamusoro adsorption mukana kunyange pasi pemvura yakadzika mhute chikamu chekumanikidzwa.
• ● Kushandisa sulfur-impregnated activated carbon kubvisa mercury kwakachipa pamutengo. Mercury inopindirana nesarufa pane sarufa yakaitwa activated kabhoni kuti ibudise mercury sulfide, iyo inoshambadzirwa payakagadzirwa kabhoni kuzadzisa chinangwa chekubvisa mecury.
• ● Precision sefa zvinhu zvinogona kusefa molecular sieve uye activated carbon dust pazasi 5μm.

1.1.2 Liquefaction uye firiji unit

Iyo yakasarudzwa maitiro nzira ye liquefaction uye refrigeration unit ndeye MRC (mixed refrigerant) cycle refrigeration, iyo yakaderera simba rekushandisa. Iyi nzira ine yakaderera simba rekushandisa pakati pezvinowanzo shandiswa firiji nzira, zvichiita kuti mutengo wechigadzirwa ukwikwidze pamusika. Iyo refrigerant proportioning unit yakasununguka pane inotenderera yekumanikidza unit. Munguva yekushanda, chikamu chekuenzanisa chinozadza refrigerant kune inotenderera yekumanikidza unit, kuchengetedza yakagadzikana yekushanda mamiriro ekutenderera anotenderera kumanikidza; Mushure mokunge chikwata ichivharwa, chikamu chekuenzanisa chinogona kuchengetedza firiji kubva kune chikamu chepamusoro-soro chechikwata chekugadzirisa pasina kubvisa firiji. Izvi hazvigone chete kuchengetedza firiji, asiwo kupfupisa inotevera yekutanga nguva.

Ese mavharuvhu mubhokisi rinotonhora akaiswa welded, uye hapana flange yekubatanidza mubhokisi rinotonhora kuti kuderedze zvinokwanisika kubuda mubhokisi rinotonhora.

1.2 Midziyo mikuru yechikamu chimwe nechimwe

2. Instrument control system

Kuti unyatso tarisisa maitiro ekugadzirwa kweseti yakakwana yemidziyo, uye kuve nechokwadi chekushanda kwakavimbika uye nyore kushanda nekugadzirisa, chiridzwa chekudzora sisitimu inonyanya kusanganisira:

Distributed control system (DCS)

kuchengetedza Instrument system (SIS)

Moto Alarm uye Gasi Detector System (FGS)

Yakavharwa-inotenderera terevhizheni (CCTV)

Analysis system

Uye yakakwirira-chaiyo zviridzwa (flowmeter, analyzer, thermometer, pressure gage) inosangana nezvinodiwa maitiro. Iyi sisitimu inopa kugadzirisa kwakakwana, kutumwa uye kutarisa mabasa, kusanganisira nzira yekutora data, yakavharwa-loop control, midziyo yekutarisa mamiriro ekutarisa, alarm interlocking uye sevhisi, real-time data processing uye kuratidza, maitiro sevhisi, graphic kuratidza, kushanda rekodhi rekodhi sevhisi uye mamwe mabasa. Kana paine emergency muchikamu chekugadzira kana FGS system inotumira chiratidzo chealarm, iyo SIS inotumira chiratidzo chekudzivirira chekudzivirira kuchengetedza midziyo yepa-site, uye FGS system inozivisa dhipatimendi remoto wenzvimbo panguva imwe chete.

3. Utility system

Iyi sisitimu inonyanya kusanganisira: chiridzwa mhepo unit, nitrogen unit, kupisa kupisa mafuta unit, desalted mvura unit uye inotonhorera inotenderera mvura unit.