Cycloalkanes (los yog cycloparaffins), tseem hu ua naphthenes hauv kev lag luam roj av, yog saturated hydrocarbons uas muaj cov qauv nrog carbon atoms txuas hauv lub nplhaib Cov cycloalkane muaj pes tsawg leeg hauv cov roj crude thoob ntiaj teb feem ntau txawv. los ntawm 30% mus rau 60% (saib Table 3).
Paraffins thiab naphthenes yog dab tsi?
Paraffins - ncaj saw ntawm saturated hydrocarbons. Isoparaffins - ceg saw ntawm saturated hydrocarbons. Aromatics - unsaturated hydrocarbons uas muaj ib los yog ntau tshaj benzene rings. Naphthenes - cyclic saw ntawm saturated hydrocarbons.
Naphthenes siv dab tsi?
Naphthenes yog ib qho tseem ceeb ntawm ntawm cov khoom siv roj av ua kua. Feem ntau ntawm qhov hnyav dua qhov kub ntawm qhov chaw seem yog cycloalkanes. Naphthenic crude roj tau hloov dua siab tshiab rau hauv cov roj av ntau dua li cov roj uas muaj cov roj paraffin.
Dab tsi yog paraffins muab ob qho piv txwv?
Paraffins yog ncaj-los yog branched-chain hydrocarbons muaj cov tshuaj formula C H2n+2 Lub npe ntawm txhua tus tswv cuab xaus nrog –ane; piv txwv yog propane, isopentane, thiab ib txwm heptane (Daim duab 3.1). … Lawv muab cov roj av ncaj ncees (C5 thiab C6 molecules), txawm tias cov roj av octane qis dua.
Yuav ua li cas feem pua ntawm Naphthenes hauv cov roj crude?
Cov feem ntawm cov ntsiab lus hauv cov khoom siv raw yog 84.5% carbon, 13% hydrogen, 1-3% sulfur, thiab tsawg dua 1% ntawm nitrogen, oxygen, hlau, thiab ntsev. Lub cev muaj zog ntawm cov roj crude sib txawv nyob rau hauv ntau yam.
