Txhawm rau ua kom tau raws li kev xav tau ntawm kev lag luam (tshwj xeeb tshaj yog nyob rau hauv alkylation roj av thiab MTBE ntau lawm), isobutane ntau lawm feem ntau nce los ntawm kev hloov tshuaj lom neeg.
1. n-Butane Isomerization
- Reaction: n-Butane isomerizes rau isobutane nyob rau hauv qhov kev txiav txim ntawm lub catalyst.
- Catalyst: Niaj hnub nimno catalysts feem ntau siv cov kua qaub catalysts xws li Pt/alumina thiab molecular sieves (siab-kub roj-theem txoj kev).
- Cov xwm txheej: Kub 120-200 degree, siab 1.5-3.0 MPa, hydrogen siab ib puag ncig tiv thaiv cov pa roj carbon ntau.
- Cov yam ntxwv: paub tab technology, cov txheej txheem tseem ceeb rau kev tsim cov isobutane.
2. C4 Olefin Hydrogenation
- Khoom noj khoom haus: C4 feem los ntawm chav tawg lossis catalytic cracking (muaj isobutene, 1-butene, thiab lwm yam).
- Teb: Xaiv hydrogenation nyob rau hauv catalysts xws li Ni thiab Pd converts isobutene rau isobutane.
- Daim ntawv thov: Feem ntau siv los ntxuav C4 feem rau tom qab alkylation lossis hnyav ntau lawm.
3. Alkylation Byproducts
- Nyob rau hauv sulfuric acid los yog hydrofluoric acid catalysis, isobutane undergoes alkylation nrog C3-C5 olefins (xws li propylene thiab butene) los tsim high-octane roj av. Ib feem ntawm cov isobutane yog rov siv dua thaum lub sijhawm txheej txheem no, thiab kev rov ua dua yog qhov tsim nyog thaum tsis txaus, yog li txhawb kev thov rau nws cov synthesis.
4. Fischer-Tropsch Synthesis Byproducts
- Thaum lub sij hawm Fischer-Tropsch synthesis ntawm thee los yog natural gas los tsim cov kua roj, ib tug me me ntawm C4 alkanes yog tsim raws li ib tug byproduct, los ntawm uas isobutane tuaj yeem sib cais.
5. Kev hloov pauv biomass
- Biomass (xws li roj) hloov mus rau hauv cov roj av liquefied roj av (Bio-LPG) los ntawm cov txheej txheem xws li hydrodeoxygenation thiab tawg. Cov roj no muaj cov isobutane, tab sis tam sim no kev tsim khoom raug txwv.
Cim npe nrov: Tuam Tshoj chemical synthesis ntawm isobutane manufacturers, lwm tus neeg, Hoobkas
