Chigadziko cheLiquefaction cheMMSCFD chine michina midiki ine skid uye Clean Energy
ruzivo rwechigadzirwa
Gasi rechisikigo rakanyungudika (LNG) igasi rechisikigo, kunyanya methane, rakatonhodzwa kuita semvura kuti rive nyore uye rakachengeteka pakuchengetwa nekutakurwa. Rinotora chikamu chimwe muzvitanhatu chegasi rechisikigo mumamiriro egasi. Tinopa Zvivako zveLiquefaction Gasi rechisikigo mudiki (mini) uye diki. Kugona kwezvivako kunofukidza kubva pa13 kusvika kupfuura matani mazana maviri pazuva ekugadzirwa kweLNG (18,000 kusvika 300,000 Nm3/d). Gasi rekudyisa: ● Minda yegasi yakamanikana ● Gasi rakabatana / rakapfurwa ● Biogas ● Gasi repaipi Chivako chakazara cheLNG liquefaction chinosanganisira masisitimu matatu: sisitimu yekugadzira, sisitimu yekudzora zvishandiso uye sisitimu yemagetsi. Zvichienderana nemasosi akasiyana emhepo, chinogona kuchinjwa. Zvichienderana nemamiriro chaiwo egasi, tinoshandisa maitiro akanakisa uye hurongwa hwakaderera kuti tisangane nezvinodiwa zvakasiyana zvevatengi. Midziyo yakasungirirwa paskid inoita kuti kutakurwa nekuiswa zvive nyore. 1. Sisitimu yekushanda: Gasi rechisikigo rinomanikidzwa mushure mekusefa, kupatsanurwa, kudzorwa kwesimba uye kuyerwa, uye rozopinda musisitimu yekugadzirira gasi rechisikigo. Mushure mekubvisa CO2, H2S, Hg, H2O uye mahydrocarbon anorema, rinopinda mubhokisi rinotonhora remvura. Zvadaro rinotonhorerwa muplate fin heat exchanger, rinogadziriswa mushure mekusefa, uye rinotevera rinotonhorerwa, rinokweshwa uye rinopenya kuflash tank, uye pakupedzisira, chikamu chemvura chakaparadzaniswa chinopinda mutangi rekuchengetera LNG sezvigadzirwa zveLNG. Chati yekufamba kweLNG Plant yakaiswa skid ndeiyi inotevera: Sisitimu yekushanda yeCryogenic LNG Plant inosanganisira: ● Kusefa gasi rekudyisa, kupatsanurwa, kudzorwa kwesimba uye kuyera; ● Unit yekukurudzira gasi rekudyisa ● Unit yekugadzirira (kusanganisira deacidization, dehydration uye heavy hydrocarbon remota, mercury neguruva remota); ● Unit yeMR proportioning uye MR compression cycle unit; ● Unit yekudzikisa simba reLNG (kusanganisira denitrification unit); 1.1 Zvinhu zviri muhurongwa hwekugadzirisa 1.1.1 Chigadziko chekugadzirisa gasi rekudyisa Nzira yekushanda kwechikamu chekugadzirisa gasi rekudyisa ine zvinhu zvinotevera: ● Kubvisa acid nemhinduro yeMDEA kune zvakanakira furo diki, kukora kushoma uye kurasikirwa kudiki kwemaamine. ● Kunyudzwa kwemolecular sieve kunoshandiswa pakuderedza mvura mumuviri, uye kuchiri nebhenefiti yakakura yekunyudzwa kunyangwe kana mvura yadzikira. ● Kushandisa activated carbon yakanyikwa nesulfure kubvisa mercury mutengo wakaderera. Mercury inosangana nesulfure pasulfure yakanyikwa neactivated carbon kuti igadzire mercury sulfide, iyo inonyudzwa pa activated carbon kuti ibudise chinangwa chekubvisa mercury. ● Zvinhu zve filter zvinonyatsonaka zvinogona kusefa molecular sieve ne activated carbon dust pasi pe5μm. 1.1.2 Chigadziko che liquefaction ne refrigeration Nzira yakasarudzwa ye liquefaction ne refrigeration unit ndeye MRC (mixed refrigerant) cycle refrigeration, inova kushandiswa kwesimba kushoma. Nzira iyi ine simba shoma rinoshandiswa pakati penzira dzinowanzo shandiswa dze refrigeration, zvichiita kuti mutengo wechigadzirwa ukwikwidzane mumusika. Chikamu chekuisa mufiriji hachina kuenzana nechikamu chekuisa mufiriji chinotenderera. Panguva yekushanda, chikamu chekuisa mufiriji chinozadza chitofu nechikamu chekuisa mufiriji chinotenderera, zvichichengetedza mamiriro ekushanda akagadzikana echikamu chekuisa mufiriji chinotenderera; Mushure mekunge chikamu chadzimwa, chikamu chekuisa mufiriji chinogona kuchengeta chitofu kubva muchikamu chekuisa mufiriji chine simba guru pasina kuburitsa mufiriji. Izvi hazvingogone kuchengetedza chitofu chete, asiwo kupfupisa nguva yekutanga inotevera. Mavharuvhu ese ari mubhokisi rekutonhora akasungirirwa, uye hapana kubatana kweflange mubhokisi rekutonhora kuderedza nzvimbo dzinogona kubuda mubhokisi rekutonhora. 1.2 Midziyo mikuru yechikamu chimwe nechimwe S/N Zita rechikamu Midziyo mikuru 1 Kuparadzanisa nekudzora gasi rekusefa feed gas separator, flowmeter, pressure regulator, feed gas compressor 2 Pretreatment unit Deacidification unit Absorber and regenerator Dehydration unit Adsorption tower, regeneration heater, regeneration gas cooler and regeneration gas separator Heavy hydrocarbon removal unit Adsorption tower Mercury remover and filtration unit Mercury remover and dust 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 unit Loading system 6 Bog recovery unit Bog regenerator 2. Instrument control system Kuti tinyatso tarisa maitikiro ekugadzirwa kweseti yese yemidziyo, uye kuti tive nechokwadi chekuti inoshanda zvakanaka uye kushanda zvakanaka, instrument control system inonyanya kusanganisira: Distributed control system (DCS) Safety Instrument system (SIS) Fire Alarm and Gas Detector System (FGS) Closed-circuit television (CCTV) Analysis system Uye high-precision instruments (flowmeter, analyzer, thermometer, pressure gage) inosangana nezvinodiwa zvemaitiro. Sisitimu iyi inopa mabasa akakwana ekugadzirisa, kuraira uye ekutarisa, anosanganisira kutora data remaitiro, kudzora kweclosed-loop, mamiriro ekutarisa mashandiro emidziyo, alarm interlocking uye service, kugadzirisa data nenguva chaiyo, sevhisi yefashoni, graphic display, sevhisi yerekodhi yekushanda nemamwe mabasa. Kana paine emergency muyuniti yekugadzira kana FGS system ikatumira chiratidzo chealarm, SIS inotumira chiratidzo chekudzivirira interlock kuchengetedza michina iri panzvimbo, uye FGS system inozivisa dhipatimendi remoto remunharaunda panguva imwe chete. 3. Sisitimu yemagetsi Sisitimu iyi inonyanya kusanganisira: yuniti yemhepo yemidziyo, yuniti yenitrogen, yuniti yemafuta ekupisa, yuniti yemvura yakabviswa munyu uye yuniti yemvura inotonhorera inotenderera. Pakupera kwa2025, Hengzhong yaive nemapurojekiti makumi matatu nemaviri eLNG. Mapurojekiti aya anosanganisira Mini LNG, Micro LNG, uye LNG plants dzine mwero wekuyerera kubva pa2 kusvika ku10 MMSCFD, uye vatengi ndiIran, Russia, neChina.