Iskar gas da aka fitar tana ɗauke da wani adadin iskar gas mai guba CO2, wanda zai iya haifar da matsaloli kamar raguwar ƙimar kuzari da kuma lalata bututun mai. Saboda haka, ana buƙatar maganin decarbonization kafin jigilar bututun da amfani da shi.
Dangane da dabarar ƙimar kuzarin iskar gas ta ƙasa a cikin ma'aunin ƙasa (GB/T 11062-2014), ana iya ƙididdige cewa 10mol% CO2 zai haifar da raguwar kusan 9.80% a cikin ƙimar kuzarin methane a kowace mita mai siffar cubic. Lokacin da CO2 ya haɗu da tururin ruwa kuma yana da matsin lamba kaɗan fiye da 207kPa, zai haifar da tsatsa mai tsanani ga kayan aiki da bututun mai, kuma ana buƙatar ɗaukar ƙarin matakan hana tsatsa. Saboda haka, dole ne a cire iskar gas mai ƙarfi kafin a kai ta bututun mai na kasuwanci.
Ana amfani da tsarin MDEA don cire CO2 daga iskar gas.
Ka'idojin kimiyyar lissafi da ka'idar cire carburetion na MDEA
MDEA, sunan kimiyya N -methyldiethanolamine, ruwa ne mai ɗanɗano mara launi ko ɗan rawaya.
Tsarin kwayoyin halitta: CH3N(CH2CH2OH)2,
Tafasawar wuri: 246~249 ℃ /760mmhg; takamaiman nauyi: 1.0425g/ml (20 ℃);
Yanayin daskarewa: -21 ℃ (tsarki 99%); danko: 101Cp (20 ℃);
Ana iya jujjuya shi cikin sauƙi da ruwa, ethanol, ether, da sauransu; alkaline mai rauni a cikin ruwa; amsawar sinadarai zai faru a cikin iskar carbon dioxide ta acid da hydrogen sulfide, kuma a matsin lamba mafi girma, iskar carbon dioxide da hydrogen sulfide suna da mafi girma. Don haka dukkan tsarin sha shine tsarin sha na zahiri da na sinadarai.
Ruwan da ke cikin MDEA bayan ya sha hydrogen sulfide da carbon dioxide yana shiga tankin walƙiya don fitar da iskar gas mai ƙonewa, sannan a aika shi zuwa hasumiyar sabuntawa. Ana dumama ruwan mai cike da iskar gas ɗin kuma yana ruɓewa a ƙasan hasumiyar don fitar da carbon dioxide da hydrogen sulfide gaba ɗaya. A lokaci guda, iskar gas ɗin da ke ƙasan hasumiyar yana tashi don samar da wani sakamako na biyu na cire ruwa mai cike da iskar gas a saman hasumiyar; don haka dukkan tsarin sake farfadowa shine tsarin sake farfadowa na zahiri da na sinadarai. Takamaiman amsawar sinadarai shine kamar haka:
R2R'N + H2S R2R'NH + HS (amsawa nan take)
R2R'N+CO2+ H2O R2R'NH +HCO3 (aiki a hankali)
Hengzhong ƙwararre ne a fannin kula da rijiyoyin iskar gas, tsarkakewar iskar gas ta halitta, Murmurewa daga LPG, Kamfanin samar da iskar gas (LNG) kuma saitin janareta na iskar gas.
Tuntuɓi:
Kamfanin Sichuan Hengzhong Automation Equipment Co., Ltd.
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Adireshi: Lamba ta 8, Sashe na 2 na Titin Tengfei, Gundumar Shigao, Sabon Yankin Tianfu, birnin Meishan, Sichuan China 620564
Lokacin Saƙo: Disamba-03-2023