Cov txheej txheem:

Ob txoj kev ntawm kev tawg yog dab tsi?
Ob txoj kev ntawm kev tawg yog dab tsi?

Video: Ob txoj kev ntawm kev tawg yog dab tsi?

Video: Ob txoj kev ntawm kev tawg yog dab tsi?
Video: Txoj kev ua laib thaum kawg tsis tshuav dab tsi 3/23/2023 2024, Kaum ib hlis
Anonim

Hom Cracking

  • FCC - Cov kua dej Catalytic Kev tawg : Nws yog tsuas yog siv nyob rau hauv roj av refiners.
  • Hydrocracking: Nws yog ib qho catalytic tawg txheej txheem, qhov twg nws siv hydrocracking los rhuav C - C bonds.
  • Chav Kev tawg : Nws yog cov txheej txheem petrochemical uas cuam tshuam nrog kev tawg ntawm cov dej saturated hydrocarbons rau hauv me me unsaturated hydrocarbons.

Yog li ntawd, hom tshuaj tiv thaiv yog tawg?

Kub tawg yog a hom ntawm chemical tshuaj tiv thaiv uas siv cov cua sov los rhuav tshem cov saw ntev molecules rau hauv me me, ntau reactive, thiab yog li ntawd muaj txiaj ntsig zoo dua, molecules. Hauv tsev kawm ntawv chav kuaj, tej zaum koj tau ua tiav tawg rau koj tus kheej siv cov kua paraffin thiab lub lauj kaub tawg.

Ib yam li ntawd, dab tsi yog cracking nrog piv txwv? Kev tawg . Kev tawg , raws li lub npe qhia, yog txheej txheem uas loj hydrocarbon molecules tau tawg mus rau hauv me me thiab muaj txiaj ntsig zoo dua, rau piv txwv : Cov tawg cov khoom, xws li ethene, propene, buta-1, 3-diene thiab C4 alkenes, yog siv los ua ntau yam tshuaj tseem ceeb.

Kuj paub yog, dab tsi yog txheej txheem ntawm kev tawg?

Hauv petrochemistry, roj av geology thiab organic chemistry, tawg yog cov txheej txheem Qhov no complex organic molecules xws li kerogens los yog ntev-chain hydrocarbons tau tawg mus rau hauv yooj yim molecules xws li lub teeb hydrocarbons, los ntawm kev tawg ntawm carbon-carbon bonds nyob rau hauv lub precursors.

Yuav ua li cas tawg ua GCSE?

Kev tawg tso cai rau loj hydrocarbon molecules kom tawg mus rau hauv me me, muaj txiaj ntsig zoo hydrocarbon molecules. Cov feem uas muaj cov loj hydrocarbon molecules yog rhuab kom vaporize lawv. Tom qab ntawd lawv yog: rhaub rau 600-700 ° C.

Pom zoo: