0.7~3.5 MMSCFD inogadzirwa nevatengi senzira yekudyara LNG kana kuti LNG liquefaction plant

Gasi rechisikigo rakanyungudika (LNG) igasi rechisikigo, rinonyanya kushandiswa semethane, rakatonhodzwa kuita semvura kuti rive nyore uye rakachengeteka pakuchengetwa nekutakurwa. Rinotora chikamu chimwe muzvitanhatu chehuwandu hwegasi rechisikigo kana riri mugasi.

Tinopa mafekitori eNatural Gas Liquefaction Plants mudiki (mini) uye mudiki. Kugona kwemafekitori aya kunofukidza kubva pa13 kusvika pa200 matani pazuva ekugadzirwa kweLNG (18,000 kusvika 300,000 Nm).³/d).

Gasi rekudya:

• ● Minda yegesi yakamanikana

• ● Gasi rakabatana / rinopfuta

• ● Biogas

• ● Gasi repaipi

Chivako chose cheLNG chinonyungudutsa mvura chinosanganisira masisitimu matatu: sisitimu yekugadzira, sisitimu yekudzora michina uye sisitimu yekushandisa. Zvichienderana nemhepo dzakasiyana, inogona kuchinjwa.

Zvichienderana nemamiriro chaiwo egasi, tinoshandisa nzira yakanakisisa uye hurongwa husingadhuri zvakanyanya kuti tisangane nezvinodiwa nevatengi. Midziyo inosungirirwa paskid inoita kuti kutakurwa nekuiswa zvive nyore.

1. Sisitimu yemaitiro

Gasi rechisikigo rinodzvinyirirwa mushure mekusefa, kupatsanurwa, kudzorwa kwekumanikidzwa uye kuyerwa, uye rozopinda mugadziriro yekurapa gasi rechisikigo. Mushure mekubvisa CO2, gasi rechisikigo rinodzvinyirirwa mushure mekusefa, kupatsanurwa, kudzorwa kwekumanikidzwa uye kuyera, uye rozopinda mugadziriro yekurapa gasi rechisikigo.₂, H₂S ,Hg, H₂O2 nemahydrocarbon anorema, inopinda mubhokisi rinotonhora remvura inonyunguduka. Yobva yatonhodzwa muplate fin heat exchanger, yozoiswa nitrogen mushure mekunyunguduka, yozotonhodzwazve, yozoiswa muflash tank, uye pakupedzisira, chikamu chemvura chakaparadzaniswa chinopinda muLNG storage tank sezvigadzirwa zveLNG.

Chati yemafambiro echigadzirwa cheLNG chakasungirirwa pa skid ndeiyi inotevera:

Maitiro ekugadzira cryogenic LNG Plant anosanganisira:

• ● Kusefa kwegasi rekudyisa, kupatsanura, kudzorwa kwekumanikidzwa uye kuyera kwegasi;

• ● Chigadziko chekumanikidza gasi

• ● Chigadzirwa chekurapa chisati chatanga (kusanganisirakubvisa asidhi mumuviri,kupera mvura mumuviriuye kubviswa kwemahydrocarbon akawanda, kubviswa kwemercury neguruva);

• ● Chikamu cheMR proportioning uye chikamu cheMR compression cycle;

• ● Chigadziko cheLNG chinonyungudutsa mvura (kusanganisira chikamu chekuchenesa mvura);

1.1 Zvinhu zviri muhurongwa hwekuita

1.1.1 Chigadziko chekugadzirisa gasi rinodyisa chikafu

Nzira yekushandiswa kwechikamu chekugadzirisa gasi rekudya ine hunhu hunotevera:

• ●Kubvisa acidization neMDEA solutionine zvakanakira kubuda furo diki, kukora kushoma uye kurasikirwa neamine kudiki.

• ●Kunyudzwa kwesefa yemolecularinoshandiswa pakuderedza mvura mumuviri, uye ichiri nebhenefiti yakakura yekunyungudutsa mvura kunyangwe kana mvura ine simba shoma.

• ● Kushandisa kabhoni yakasanganiswa nesarufa kubvisa mercury mutengo wakaderera. Mercury inopindirana nesarufa pane kabhoni yakasanganiswa nesarufa kuti igadzire mercury sulfide, iyo inonyungudutswa pane kabhoni yakasanganiswa kuti ibudise chinangwa chekubvisa mercury.

• ● Zvinhu zvinogadzirisa firita zvinogona kusefa sipo yemolecular uye guruva rekabhoni rakagadziriswa pasi pe5μm.

1.1.2 Chikamu chekugadzira mvura nefiriji

Nzira yakasarudzwa yekushandisa liquefaction uye firiji ndeye MRC (mixed refrigerant) cycle refrigeration, inova simba shoma rinoshandiswa. Iyi nzira ine simba shoma rinoshandiswa pakati penzira dzinowanzo shandiswa dzefiriji, zvichiita kuti mutengo wechigadzirwa ukwikwidzane pamusika. Refrigerant proportional unit haina kuenzana ne circulating compression unit. Panguva yekushanda, dividending unit inozadza refrigerant kune circulating compression unit, ichichengetedza mamiriro ekushanda akagadzikana e circulating compression unit; Mushure mekunge unit yadzimwa, dividending unit inogona kuchengeta refrigerant kubva muchikamu chekumanikidzwa kwakanyanya che compression unit pasina kuburitsa refrigerant. Izvi hazvingogone kuchengetedza refrigerant chete, asi zvakare kupfupisa nguva inotevera yekutanga.

Mavharuvhu ese ari mubhokisi rinotonhora akasungirirwa, uye hapana kubatana kweflange mubhokisi rinotonhora kuderedza nzvimbo dzinogona kubuda mvura mubhokisi rinotonhora.

1.2 Midziyo mikuru yeYuniti yega yega

2. Sisitimu yekudzora midziyo

Kuti tinyatso tarisa maitiro ekugadzira michina yese, uye kuve nechokwadi chekuti inoshanda zvakanaka uye inoshanda zviri nyore uye inogadzirisa zviri nyore, sisitimu yekudzora michina inosanganisira:

Sisitimu yekudzora yakaparadzirwa (DCS)

Sisitimu yeZvishandiso Zvekuchengetedza (SIS)

Sisitimu yeAlarm yeMoto neGasi (FGS)

Terevhizheni yeClosed-circuit (CCTV)

Sisitimu yekuongorora

Uye zvishandiso zvine hungwaru hwepamusoro (flowmeter, analyzer, thermometer, pressure gage) zvinosangana nezvinodiwa zvemaitiro. Sisitimu iyi inopa mabasa akakwana ekugadzirisa, kuraira uye kutarisa, kusanganisira kutora data reprocess, closed-loop control, mamiriro ekutarisa mashandiro emidziyo, alarm interlocking uye service, real-time data processing and display, trend service, graphic display, operation record report service nezvimwe. Kana paine emergency muproduction unit kana FGS system ikatumira alarm signal, SIS inotumira protection interlock signal kuchengetedza michina iri panzvimbo, uye FGS system inozivisa dhipatimendi refirefighter remunharaunda panguva imwe chete.

3. Sisitimu yekushandisa

Sisitimu iyi inonyanya kusanganisira: mudziyo wemhepo, nitrogen unit, heat transfer oil unit, desalted water unit uye cooling circulating water unit.

4. Kuenzanisa uye kusarudzwa kwetekinoroji yemaitiro

Maitiro ekunyungudutsa gasi rechisikigo anosanganisira kucheneswa kwegasi risina kubikwa, kunyungudutsa (kana kuti LNG liquefaction plant), kudzvanywa kwekutenderera kwemufiriji, kuchengetwa kwezvigadzirwa, kurodha uye sisitimu yekubatsira, nezvimwewo. Maitiro makuru anosanganisira kucheneswa kwegasi risina kubikwa uye kunyungudutsa gasi rakacheneswa.

Kusarudzwa kwemaitiro ekuchenesa gasi rechisikigo

Segasi risina kubikwa, gasi rechisikigo rinofanira kucheneswa zvakakwana risati ranyungudutswa. Izvi zvinoreva kubvisa gasi rine acid, mvura netsvina mugasi rine chikafu, zvakaita seH2S, CO2, H2O, Hg uye aromatic hydrocarbons, kuitira kudzivirira kuvharika nekuora kwemidziyo nemapaipi nekuda kwechando patembiricha yakaderera. Tafura inotevera inoratidza mwero wekugadzirisa usati watanga uye huwandu hwakanyanya hwetsvina yegasi rine chikafu mufekitori yeLNG.

Hunhu hwakanyanya hwekusvibiswa hunobvumidzwa hwegasi reLNG feed