Cov txheej txheem:

Yuav ua li cas tawg ntawm hydrocarbons nqa?
Yuav ua li cas tawg ntawm hydrocarbons nqa?

Video: Yuav ua li cas tawg ntawm hydrocarbons nqa?

Video: Yuav ua li cas tawg ntawm hydrocarbons nqa?
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Anonim

Hauv petrochemistry, roj av geology thiab organic chemistry , tawg yog cov txheej txheem uas ua rau cov organic molecules xws li kerogens lossis cov saw ntev hydrocarbons yog 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.

Yog li ntawd, vim li cas peb tawg hydrocarbons?

Yog vim li cas cracking yog tseem ceeb rau ob qho laj thawj tseem ceeb: Nws pab kom phim cov khoom ntawm cov feem ntau nrog qhov kev thov rau lawv. Nws tsim alkenes, uas yog pab tau raws li feedstock rau petrochemical kev lag luam.

Tom qab, lo lus nug yog, yuav ua li cas cracking? Kev tawg yog lub npe muab rau kev tawg loj hydrocarbon molecules rau hauv me me thiab ntau yam khoom siv. Qhov no yog ua tiav los ntawm kev siv cov kev kub ntxhov thiab kub tsis muaj catalyst, lossis qis dua qhov kub thiab txias hauv qhov muaj cov catalyst.

Dhau li ntawm no, 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.

Ob txoj kev ntawm kev tawg yog dab tsi?

Hom Cracking

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

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