Guzuruwar Gudun Kwando
Cire batutuwa da kayayyakin abubuwa mara hydrocarbon daga gas mai zuwa don dawo da standardon sadarwa na pipeline don gas mai amfani ko bukukuwa na gaba.
Bayanin
Abubuwan ingantacciyar saukarwa ta gas na yanki suna da mahimmanci a farkon tsarin amfani (sayarwa ta pipeline, zama larada, ayyukan kimiya, da sayar da wuyar abinci). Yasa cire batutuwa maras albarkatu, ta dace da shari'arrin standardin kayan aikin (GB 17820, GB 18047, GB/T 38753, wanda ya dace), ta kare abubuwan ingantacciyar da ke gabatarwa, kuma ta duba kayan aikin da ke da kyau.
Abubuwan na yin wuya masu iko suka sha'ada gas mai sauƙa, kamar: gas mai nufi daga gagayen zuwa, gas mai tabili, gas mai shilayi, gas mai kwallon koalin, gas mai jiki, gas mai gini, da kuma gas mai tsarin kimiya. Abubuwan na iko suna aiki a cikin teburin pressure mai zurfi kuma teburin ayyukan lissafi shine daga 30% zuwa 110%. Muna da mahirar hankali a yin wuya gas mai organik sulfur, H₂S, da kuma abunzu CO₂. Iko mai zurfi ya bada ingancin wurin taka, sanya lokacin ginawa, kuma raba kudaden saita. A kuma, yana amfura tsarin monitor mai hunarsanƙo don gano alamar ayyuka a lokacin da ke tsaye kuma bauta kare, kuma yana da tsarin kulawa ta kai don sadarwa da aiki.
Rubutun
Tushe—Xinjiang Luntai 220,000 Nm³/h Yadda Nitrogen Removal da Liquefaction Unit
|
Samfur |
Kari (Nm³\h ) |
Tsunanin Bata (Mpa.G ) |
Zazzabi (℃) |
Abun mutum a cikin Nitrogen |
|
LNG |
8000 |
≥15KPa |
-162 |
≤1%mol |
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.
Tambayoyi Masu Yawan Faruwa
T: Yaya ku ne masu sanyi ko masu tsayarwa?
Mu ne masu tsayarwa na gaba daya a shagali na kayan aikin cryogenic.
T: Wani abu ne ya sa ku dace?
Mu ba ku baya ba tattalin arziki, kuma kuma yadda za a iya amfani da su, amma kuma halayen da amincewa da ayyukan bayan sale.
T: Yanayin masu sanyi na ku ya shirye shirye a wani aikin gaba daya?
Ee, yanayin masu sanyi na ku suna da kadan kadan 15 shekara na kira a wannan shagali, kuma sun shirye shirye a rarraba, tsayarwa, sadarwa, da kuma fuskantarwa na kayan aikin a Turkiya, Misr, Myanmar, da sauransu.
T: Yaya za na samu harga ta hanyar tsarin bayani?
Da fatan ka ba mu bayani mai zuwa da kai da bayanin alamu na gida, don haka za mu ba ku kayan aikin da halayen da ke cikin kai.
