High Quality China Cryogenic LNG Plant Manufacturers - 67~134 TPD skid yakaiswa gasi rechisikiro liquefaction unit - Rongteng

System overview

Iyo yekudyisa gasi rechisikigo inopinda mune yakasikwa gasi pretreatment system mushure mekusefa, kupatsanurwa, kudzvanywa mutemo uye metering. Mushure meCO₂Hg uye H₂O dzinobviswa, inopinda liquefaction inotonhora bhokisi, iyo yakatonhodzwa, liquefied uye nitrogen inobviswa mundiro fin kupisa exchanger, uye ipapo anodzokera kuchando bhokisi kuramba kutonhora, undercooling, throttling uye kupenya kuti flash tank. Iyo yakaparadzaniswa yemvura chikamu inopinda muLNG yekuchengetedza tangi seLNG zvigadzirwa.

Iyo huru maitiro uye tekinoroji nzira dzeyuniti ndeidzi:

Shandisa MDEA kubvisa carbon dioxide;

Molecular sieve inoshandiswa kubvisa trace water;

Kubviswa kwe mercury ne sulfur impregnated activated carbon;

Shandisa chaiyo sefa zvinhu kusefa ma molecular sieve uye activated carbon dust

Kubviswa kweNitrogen kuburikidza nekushomeka kwekushisa kwepasi;

MRC (yakasanganiswa refrigerant) kutenderera firiji maitiro anogamuchirwa kunyungudutsa gasi rose rakacheneswa.

Iyo process system inosanganisira:

Metering uye kupatsanurwa gasi mbishi;

Pretreatment system (kusanganisira decarburization, mercury kubvisa, kupera mvura uye kubvisa guruva);

MR proportioning system uye MR compression circulation system;

LNG liquefaction system;

LNG kuchengetedza uye kurodha system.

Bog recovery system

Kudyisa gasi kusefa kupatsanurwa uye kudzvanywa inodzora unit

Iyo yekudya gasi yechisikigo kubva kumusoro kwerukova inoyerera nepapombi pakumanikidzwa kwe5.0 ~ 6.0MpaG inopinda mugasi rekupinza sefa separator mushure mekudzvanyirirwa kudzora, uye inopinda pasi pasi system mushure mekuparadzana uye metering.

Iyo huru dhizaini yekushandisa ndeye feed gasi sefa separator, flowmeter, pressure regulator, nezvimwe.

2) Dhizaina paramita

Kugadzirisa simba: 20 × 10⁴Nm³/zuva

Kugadzirisa huwandu: 50% ~ 110%

Pretreatment system

Feed gasi deacidification unit

1）Kutsanangura tsananguro

Gasi rekudya rinobva kumusoro rinopinda mugasi re deacidification, rinoshandisa MDEA mhinduro kubvisa magasi ane acid akadai seCO.₂uye H₂S mune gasi rekudya.

Gasi remusikirwo rinopinda kubva kuchikamu chezasi chemucherechedzo (kunyura shongwe) uye rinopfuura nemucherechedzo kubva pasi kusvika kumusoro; Iyo yakakwana yakagadziridzwa yeMDEA mhinduro (yakaonda mhinduro) inopinda ichibva kumusoro kweiyo inonyudza uye inopfuura nepakati inonyudza kubva kumusoro kusvika pasi. Iyo reverse inoyerera MDEA mhinduro uye gasi rechisikigo rakabatikana zvizere mune inonopinza, iyo CO₂mugasi inobatwa uye inopinda muchikamu chemvura, uye zvikamu zvisina kuvharwa zvinotungamirirwa kubva kumusoro kwemuputi uye kupinda mu decarbonization gas cooler uye separator. Iyo gasi kubva ku decarbonization gasi separator inopinda mugasi rekudya mercury kubvisa unit, uye iyo condensate inoenda kune flash tank.

Izvo zvikamu zve CO₂mugasi rinorapwa rakagadziriswa risingasviki 50ppmv.

Iyo MDEA mhinduro inobata CO₂inonzi hupfumi mhinduro, iyo inotumirwa kune flash tower, uye gasi rechisikigo rinopenya ne depressurization rinotumirwa kune iyo mafuta system. Mushure mekuchinjana kwekupisa pakati pemvura inopenya uye mhinduro (mvura yakaonda) ichiyerera ichibva pasi peshongwe yekuvandudza, simudza tembiricha kusvika ~ 98 ℃ kusvika kumusoro kweiyo shongwe yekuvandudza, uye ita kubvisa kudzoreredza mushongwe yekuvandudza kusvika iyo yakaonda yemvura yakaonda yasvika pane index.

Mvura yakaonda kubva mushongwe yekuvandudza inopfuura nepakati pemvura yakapfuma uye isina kunaka yekupisa kupisa uye inotonhorera mvura inotonhorera. Iyo yakaonda mvura inotonhodzwa kusvika ~ 40 ℃, yakatsikirirwa nepombi yemvura yakaonda uye inopinda ichibva kumusoro kweiyo shongwe yekunyura.

Iyo gasi yekuburitsa iri pamusoro peiyo shongwe yekuvandudza inopinda muasidhi gasi rinoparadzanisa kuburikidza neasidhi gasi inotonhorera, iyo gasi kubva kune asidhi gasi separator inotumirwa kune asidhi gasi rekuburitsa system, uye iyo condensate inotumirwa kune iyo flash separator mushure mekumanikidzwa nepombi yekudzoreredza.

Iyo inopisa sosi ye reboiler ye regeneration tower inopisa nemafuta ekutamisa kupisa.

Iyo huru process midziyo yeiyi unit ndeye absorption tower uye regeneration tower.