Chomera cha LNG Liquefaction chokhala ndi ma micro skid mounted ndi chomera cha LNG chosungunula madzi

Mpweya wachilengedwe wosungunuka (LNG) ndi mpweya wachilengedwe, makamaka methane, womwe wazizira mpaka kukhala madzi kuti usungidwe mosavuta komanso kuti ukhale wotetezeka. Umatenga pafupifupi 1/600th ya kuchuluka kwa mpweya wachilengedwe mu mpweya. Timapereka Zomera Zosungunuka za Mpweya Wachilengedwe mu micro (mini) ndi yaying'ono. Mphamvu ya zomerazi imaphimba kuyambira matani 13 mpaka oposa 200 patsiku la kupanga LNG (18,000 mpaka 300,000 Nm3/d). Mpweya wodyetsa: ● Minda ya mpweya wosasunthika ● Mpweya wogwirizana / woyaka ● Biogas ● Mpweya wapaipi Chomera chathunthu cha LNG chosungunuka chimakhala ndi machitidwe atatu: makina opangira, makina owongolera zida ndi makina ogwiritsira ntchito. Malinga ndi magwero osiyanasiyana a mpweya, amatha kusinthidwa. Malinga ndi momwe mpweya ulili, timagwiritsa ntchito njira yabwino kwambiri komanso njira yotsika mtengo kwambiri kuti tikwaniritse zosowa zosiyanasiyana za makasitomala. Zipangizo zokwezedwa ndi skid zimapangitsa kuti mayendedwe ndi kukhazikitsa zikhale zosavuta. 1. Dongosolo la njira Mpweya wachilengedwe wodyetsa umapanikizika pambuyo posefedwa, kulekanitsidwa, kulamulira kuthamanga ndi kuyeza, kenako umalowa mu dongosolo la mankhwala achilengedwe asanayambe kuyeretsa mpweya. Mukachotsa CO2, H2S, Hg, H2O ndi ma hydrocarbon olemera, umalowa mu bokosi lozizira la liquefaction. Kenako umaziziritsidwa mu chosinthira kutentha cha mbale, kusinthidwa kukhala nitrogen pambuyo poyeretsedwa, kenako kuziziritsidwa pang'ono, kukanda ndikuyatsidwa ku thanki ya flash, ndipo pomaliza, gawo lamadzimadzi lolekanitsidwa limalowa mu thanki yosungiramo LNG ngati zinthu za LNG. Tchati cha kayendedwe ka LNG Plant yokhala ndi skid ndi motere: Dongosolo la njira ya cryogenic LNG Plant limaphatikizapo: ● Kusefedwa kwa mpweya wodyetsa, kulekanitsidwa, kulamulira kuthamanga ndi gawo loyezera; ● Gawo lokakamiza mpweya wodyetsa ● Gawo lokonzekera kuyeretsa (kuphatikizapo kuyeretsa, kutaya madzi m'thupi ndi kuchotsa mafuta olemera a hydrocarbon, kuchotsa mercury ndi fumbi); ● Gawo lolinganiza la MR ndi gawo la MR compression cycle; ● Gawo loletsa kusungunuka kwa LNG (kuphatikiza gawo loletsa kusungunuka); 1.1 Makhalidwe a dongosolo la ndondomeko 1.1.1 Gawo lokonzekera mpweya wodyetsa Njira yokonzekera mpweya wodyetsa ili ndi makhalidwe awa: ● Kuchotsa asidi ndi yankho la MDEA kuli ndi ubwino wa thovu laling'ono, kuwononga pang'ono komanso kutaya pang'ono kwa amine. ● Kulowetsa mpweya mu sieve ya molecular kumagwiritsidwa ntchito pochotsa madzi m'thupi, ndipo kumakhalabe ndi ubwino waukulu wolowetsa mpweya ngakhale pansi pa kupanikizika pang'ono kwa nthunzi yamadzi. ● Kugwiritsa ntchito mpweya wothira sulfure kuti muchotse mercury ndikotsika mtengo. Mercury imagwira ntchito ndi sulfure pa sulfure kuti ipange mercury sulfide, yomwe imathira mpweya wothira kuti ikwaniritse cholinga chochotsa mercury. ● Zinthu zosefera bwino zimatha kusefa sieve ya molecular ndi fumbi la carbon logwiritsidwa ntchito pansi pa 5μm. 1.1.2 Gawo lothira madzi ndi firiji Njira yosankhidwa yogwiritsira ntchito liquefaction ndi firiji ndi MRC (mixed refrigerant) cycle refrigerant, yomwe ndi yochepa kugwiritsa ntchito mphamvu. Njirayi ili ndi mphamvu zochepa kwambiri zomwe zimagwiritsidwa ntchito pothira madzi, zomwe zimapangitsa kuti mtengo wazinthu ukhale wopikisana pamsika. Gawo logawaniza ma refrigerant silidalira gawo logawaniza ma circulating. Pa nthawi yogwira ntchito, gawo logawaniza limadzazanso refrigerant ku gawo logawaniza ma circulating, kusunga magwiridwe antchito okhazikika a gawo logawaniza ma circulating; Pambuyo poti gawolo latsekedwa, gawo logawaniza ma circulating limatha kusunga firiji kuchokera ku gawo lamphamvu la gawo logawaniza ma compression popanda kutulutsa refrigerant. Izi sizingopulumutsa refrigerant yokha, komanso zingafupikitse nthawi yotsatira yoyambira. Ma valve onse omwe ali mu bokosi logawaniza amalumikizidwa, ndipo palibe kulumikizana kwa flange mu bokosi logawaniza kuti achepetse malo omwe angatulukire mu bokosi logawaniza ma circulating. 1.2 Zipangizo zazikulu za gawo lililonse S/N Dzina la gawo Zipangizo zazikulu 1 Kupatula ndi kulamulira kusakaniza kwa mpweya wa chakudya Kusiyanitsa ndi kulamulira kusakaniza kwa mpweya wa chakudya, flowmeter, pressure regulator, feed gas compressor 2 Pretreatment Unit Deacidification Unit Absorber and regenerator Dehydration Tower, regeneration heater, regeneration gas cooler and regeneration gas separator Heavy hydrocarbon removal Tower Adsorption and filtration Unit Mercury remover and fumbi filter 3 Liquefaction Unit Cold box, plate heat exchanger, separator, denitrification tower 4 Mixed refrigerant refrigerant Refrigerant circulating compressor and refrigerant proportioning tank 5 LNG loading system 6 Bog recovery unit Bog regenerator 2. Dongosolo lowongolera zida Pofuna kuyang'anira bwino njira yopangira zida zonse, ndikuwonetsetsa kuti ntchito yodalirika komanso yosavuta kugwira ntchito, dongosolo lowongolera zida limaphatikizapo: Distributed control system (DCS) Safety Instrument system (SIS) Fire Alarm and Gas Detector System (FGS) Closed-circuit televizioni (CCTV) System Analysis And high-precision devices (flowmeter, chowunikira, thermometer, pressure gage) zomwe zikukwaniritsa zofunikira pa ndondomekoyi. Dongosololi limapereka ntchito zabwino kwambiri zokonzera, kuyambitsa ndi kuyang'anira, kuphatikiza kupeza deta ya njira, kuwongolera kotsekedwa, momwe zida zimagwirira ntchito, kutseka ma alarm ndi ntchito, kukonza ndi kuwonetsa deta nthawi yeniyeni, ntchito yoyendera, kuwonetsa zithunzi, ntchito yolemba malipoti a ntchito ndi ntchito zina. Pakakhala vuto lalikulu mu gawo lopanga kapena dongosolo la FGS likatumiza chizindikiro cha alamu, SIS imatumiza chizindikiro choteteza kuti chiteteze zida zomwe zili pamalopo, ndipo dongosolo la FGS limadziwitsa dipatimenti yozimitsa moto nthawi yomweyo. 3. Dongosolo lamagetsi Dongosololi limaphatikizapo makamaka: chipangizo cha mpweya, chipangizo cha nayitrogeni, chipangizo chotumizira mafuta otentha, chipangizo cha madzi chopanda mchere ndi chipangizo chamadzi chozizira. Pofika kumapeto kwa chaka cha 2025, Hengzhong inali ndi mapulojekiti 32 a LNG. Mapulojekitiwa akuphatikizapo Mini LNG, Micro LNG, ndi LNG omwe ali ndi kuchuluka kwa madzi kuyambira 2 mpaka 10 MMSCFD, ndipo makasitomala ndi Iran, Russia, ndi China.