Makaman CNG na Gaba Daya | Sistemu na CNG na Kwayar da Kafin Tashin

Shararar Mataki

·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.

·Cryogenic Distillation don dolewa na Nitrogen:

Bayan haular da keɓaɓɓen karbon, yankin gasi ya kai tsauraran da sararin naitrojin da mafanin metanu a cikin jagorar gwaji don samun tsawon shango da kuma baya da wani doki na kayan da keɓaɓɓen karbon. Sai dai shi zai shiga cikin sararin sanyawa, inda ya kama zuwa -162°C ta hanyar DMR mai amfani da abubuwan sanya da sauran irin sanyawa kuma shiga a tsakiyar tura ta naitrojin. Sararin naitrojin ya kai tsauraran a cikin condenser, yayin da mafanin metanu ya kai tsauraran a cikin reboiler kuma ya taga sama, yayin da ke kammala tsari na distillation. Mafanin metanu ya kama zuwa tsawon shango kuma an export shi kamar gasi na abokin ciniki. Sararin gasi na naitrojin waje ya yi amfani da shi kamar gini mai chafe bayan kaiwar sa hannun cold energy a cikin expander, don samun balance na iyaka ta hankali.

·Lokacin Farasa, Sakawa da Kuwakar Bayan:

An rigaya su don assembly na fabirka da installation a wurin, don tabbatar da kungiyar sayayya. Jimlar lokacin aikin daga lokacin signing na kontrak zuwa successful commissioning shine 7 kwanan wata.