Hauv kev kho roj, tshuaj synthesis, thiab kev siv hauv kev lag luam, Diethanolamine (DEA) thiab Methyldiethanolamine (MDEA) yog ob qho khoom siv alkanolamines. Txawm hais tias lawv muab cov qauv zoo sib xws, lawv cov khoom, kev ua tau zoo, thiab kev siv sib txawv heev. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev lag luam xws li kev lag luam roj av, petrochemicals, thiab tshuaj zoo.
Chemical Structure
- DEA (Diethanolamine): Ib nrab amine nrog ob pawg hydroxyl (-OH). Nws cov tshuaj formula yog C4H11NO2.
- MDEA (Methyldiethanolamine): Ib pawg tertiary amine nrog ib pawg methyl thiab ob pawg hydroxyl. Nws cov tshuaj formula yog C5H13NO2.
Basicity thiab Reactivity
- DEA: Muaj zog reactivity nrog ob qho tib si CO₂ thiab H₂S, uas tso cai rau nws nqus kua qaub gases zoo tab sis feem ntau ua rau co- nqus CO₂ thaum xaiv H₂S tshem tawm.
- MDEA: Tsis muaj zog reactivity nrog CO₂ tab sis muaj zog xaiv rau H₂S, ua rau nws haum rau cov roj sweetening txheej txheem qhov twg CO₂ slippage xav tau.
Cov ntawv thov kev lag luam
- Cov ntawv thov DEA:
Kev kho roj (tshem CO₂ thiab H₂S)
Surfactant thiab detergent manufacturing
Intermediate hauv tshuaj pleev ib ce, tshuaj tua kab mob, thiab tshuaj
- MDEA Daim Ntawv Thov:
Gas sweetening nyob rau hauv natural gases thiab refinery gases (nyiam dua rau xaiv H₂S tshem tawm)
Blended amine solvents nrog piperazine los yog lwm yam activators los txhim kho CO₂ nqus
Chemical synthesis qhov twg tertiary amine muaj txiaj ntsig