INDUSTRIAL APPLICATION OF GAS-PHASE ALKYLATION TECHNOLOGY SGEB FOR DRY GAS TO ETHYLBENZENE

Abstract

Abstract: The gas-phase dry gas to ethylbenzene technology (SGEB) was adopted in a new 120 kt/a ethylbenzene unit in CNOOC Dongfang Petrochemical Co.,Ltd. The technology contains alkylation and transalkylation catalysts, five-stage adiabatic fixed-bed alkylation reactor, the FCC dry gas depropylene system, the installation of the propylbenzene column and the non-aromatic column etc., having the advantages of simplified process flow, investment-saving and low energy consumption. The unit uses FCC dry gas and purchased benzene as raw materials. The purity of ethylbenzene is 99.84%, the content of xylene is 0.06%, the conversion rate of ethylene is 98.94%, the conversion rate of diethylbenzene is 74.7%,and the economic benefit is very good.

Key words: benzene, ethylene, ethylbenzene, FCC dry gas, gas-phase alkylation, transalkylation, catalyst

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INDUSTRIAL APPLICATION OF GAS-PHASE ALKYLATION TECHNOLOGY SGEB FOR DRY GAS TO ETHYLBENZENE

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