| 摘要 |
<p>Gas and liquid products of an ethylene plant, steam cracking zone, are used for the coproduction of alkylated benzene. Dilute ethylene in typical concentrations of 7-20 mol percent is coproduced along with pure ethylene product. Impure benzene containing typically less than 8 wt % C6 and C7 non-aromatics is formed by hydratreating and fractionation of pyrolysis gasoline, rich in benzene and toluene, and also by hydrodealkylation of the toluene. The impure benzene reacts with dilute ethylene to form ethylbenzene and hydrogen rich vent gas. The impure benzene can be also a source for production of cumene, by reaction with propylene.</p> |
