·MDEA Decarbonization Process Description:
Anan wuya taƙaita ana tsarawa ta hanyar mai tsarta kuma shiga sama a dakin tafinta, inda ta hadu da haɓakkin MDEA mai zurfiin waɗanda an sauya daga samma ta hanyar rukuwa mai kyau. CO₂ da H₂S ana karɓawa su ta wayar zaiyi. Anan haɓakkin mai zurfi ana rage shekara a cagalli mai rage don cassa hydrocarbons, sanya a cagalli mai nisa da haɓakkin mai zurfi, sannan sai shiga sama a dakin gyara mata. A kan yabo na biyu a cagalli mai nisa, CO₂ da H₂S ana farka su. Haɓakkin mai zurfi ya adana, ana canza, sanya, kuma an sauya shiga dakin tafinta don ci gaba. Gasa mai asidit din sama dake sama za a iya aika zuwa maye sauƙi ko kayayyakin CO₂.
·Bayani na Tsarin Kewayon Molecular Sieve:
Bayan hadarin carbon, an kusantar raw gas zuwa adsorption Tower A, inda an kaupe water ta hanyar molecular sieve bed. Dry gas mai gudu yana da water dew point ≤ -60°C kuma an aika shi zuwa down stream. Bayan adsorption saturation, Tower B za a canza zuwa regeneration process: dry gas ko nitrogen za a rage su a cikin heater kuma a amfani da su wajen reverse purging na molecular sieve bed. Za a rage water wanda aka desorb a cikin cooler. Daga bai, za a amfani da cold dry gas wajen forward cooling na bed har zuwa 40°C, kuma yanzu a dawo regeration domin sauya. Dual towers za su canzawa ne a atomatik ta hanyar programmed valves, tare da tsawon dugun 8–12 hours.
·Tsarin Low-Temperature + Temperature Swing Adsorption (TSA):
Bayan rarraba kimiyyar molecular sieve, anza gas na raw bayan hada shi da plate-fin heat exchanger don sabbin sardawa, wanda ya haifar da partial condensation na C₅+ heavy hydrocarbons. Suna sardawa suka fito ta turbo-expander ko mixed refrigerant, kuma an farawa oil phase (recovering LPG/NGL) a cikin low-temperature separator. Wadannan hydrocarbons masu yawa da suke gas phase sun zinzegar da TSA molecular sieve adsorption tower, inda hydrocarbons masu yawa suna da loada selective adsorption. Gas mai sauƙi, tare da kwanaoyin hydrocarbon ≤ 20 mg/Nm³, an aika shi zuwa liquefaction unit. Bayan adsorption saturation, an amfani da gas mai zurfi mai nufi don reverse purging regeneration. Wadannan hydrocarbons da suka fito suna sardawa kuma sun karbarci, kuma an amfani da regeneration gas azaman abubuwar mutum.
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Mun zabi wannan tsarin saboda yadda ya samu propane mai yawa, kuma yana ba da nisba na NGL mai yawa ta 15% ga wasu abubuwan da suka gabata mu.
Gwamnatin su ya shigar da matsayin mu na kafa na gas ta farko a lokacin da ke 3 weeks kafin lokacin da aka bayyana, wanda ya taimaka mu don samun kariya daga abubuwan gas da ba su da amfani da su kafin lokacin da aka fara fahimta.
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