Tuam Tshoj Roj Roj Purifying Cog Exporters - 7MMSCFD Ntuj roj decarbonization skid - Rongteng

MDEA Physicochemical zog thiabdecarburization txoj cairau natural gas

MDEA, lub npe tshawb fawb N-methyldiethanolamine, yog cov kua tsis muaj xim lossis xim daj me ntsis.

Cov mis mos molecular: CH3N (CH2CH2OH) 2,

Kub taw tes: 246 ~ 249 ℃ / 760mmhg; Lub ntiajteb txawj nqus: 1.0425g / ml (20 ℃);

Cov ntsiab lus khov: -21 ℃ (purity 99%); viscosity: 101Cp (20 ℃);

Nws tuaj yeem yooj yim miscible nrog dej, ethanol, ether, thiab lwm yam .; tsis muaj zog alkaline hauv dej; tshuaj lom neeg cov tshuaj tiv thaiv yuav tshwm sim nyob rau hauv cov kua qaub carbon dioxide thiab hydrogen sulfide gas, thiab nyob rau hauv siab dua, carbon dioxide thiab hydrogen sulfide gas muaj siab dua li ntawd, tag nrho cov txheej txheem nqus dej yog lub cev thiab tshuaj nqus cov txheej txheem.

MDEA cov kua nplua nuj tom qab nqus cov hydrogen sulfide thiab cov pa roj carbon dioxide nkag mus rau hauv lub tank flash rau lub tshuab nqus tsev flash evaporation, thiab tom qab ntawd xa mus rau cov pej thuam tsim dua tshiab. Cov kua nplua nuj yog rhuab thiab decomposed ntawm tus pej thuam hauv qab kom tso tawm carbon dioxide thiab hydrogen sulfide kiag li. Nyob rau tib lub sijhawm, cov pa roj ntawm tus pej thuam hauv qab tau nce los tsim cov txiaj ntsig thib ob ntawm cov kua dej nplua nuj ntawm cov pej thuam saum toj kawg nkaus.; yog li tag nrho cov txheej txheem tsim dua tshiab kuj yog cov txheej txheem ntawm lub cev thiab tshuaj lom neeg. Cov tshuaj tiv thaiv tshwj xeeb yog raws li nram no:

R2R'N + H2S R2R'NH + HS (cov tshuaj tiv thaiv tam sim)

R2R'N + CO2 + H2O R2R'NH + HCO3 (slow reaction)

Absorption thiab regenerationdecarburization txoj cairau natural gas

Tom qab cov roj pub nkag mus rau hauv lub roj teeb txwv, cov impurities thiab cov tee dej hauv cov roj raug tshem tawm los ntawm lub lim cais, thiab nws nkag mus rau hauv lub nqus ntauwd los ntawm hauv qab. Nyob rau hauv lub pej thuam, nws yog countercurrent tiv tauj nrog MDEA tshuaj tsuag los ntawm sab saum toj. Lub MDEA aqueous tov (amine lean tov) absorbs hydrogen sulfide thiab carbon dioxide nyob rau hauv lub natural gas, thiaj li hais tias cov hydrogen sulfide thiab carbon dioxide nyob rau hauv lub pub roj raug tshem tawm kom tau raws li cov kev cai ntawm tus tswv. Cov pa roj purified raug xa tawm ntawm ciam teb los ntawm cov khoom siv roj cais tawm tom qab tawm hauv qhov siab tshaj ntawm qhov nqus ntauwd.

Nyob rau hauv kev tswj ntawm cov kua theem tswj valve, cov kua theem nyob rau hauv qab ntawm lub nqus ntauwd conveys cov nplua nuj amine mus rau lub flash tank. Cov nplua nuj amine los ntawm hauv qab ntawm lub nqus ntauwd nkag mus rau hauv lub tank flash. Feem ntau ntawm cov hydrocarbons absorbed rau hauv cov nplua nuj amine yog desorbed rau lub flash gas theem. Nyob rau hauv kev tswj ntawm lub siab regulating valve, lub flash chav yog zoo tu qab tso rau cov roj gas system. Cov kua nplua nuj amine raug xa mus rau lub ntshiv / nplua nuj amine heat exchanger. Cov kub lean amine los ntawm cov neeg tsim kho dua tshiab heats cov nplua nuj amine los ntawm lub flash tank, thiab tom qab ntawd cov nplua nuj amine nkag mus rau amine regeneration ntauwd.

Cov chav tsim los ntawm lub reboiler nyob rau hauv qab ntawm amine regeneration ntauwd hu rau cov nplua nuj amine tov countercurrent, stripping cov kua qaub gas los ntawm nws, yog li ua kom tiav cov regeneration ntawm nplua nuj amine. Nyob rau hauv kev tswj ntawm cov kua theem tswj valve nyob rau hauv qab ntawm lub amine regeneration pej thuam, lub kub lean amine tov overflows mus rau lub lean / nplua nuj amine tshav kub exchanger. Lub lean amine booster twj tso kua mis pressurizes cov amine nyob rau hauv lub amine buffer tank los ntawm 1.0mpa thiab xa mus rau lub absorption ntauwd. Ib qho dej regulating valve yog ntsia rau ntawm lub lean amine pipeline mus rau lub nqus ntauwd, los ntawm qhov uas cov lean amine ntws mus rau hauv lub absorption ntauwd yog tswj.