石油炼制与化工 ›› 2021, Vol. 52 ›› Issue (11): 38-41.

• 加工工艺 • 上一篇    下一篇

SGEB气相法干气制乙苯技术的工业应用

杨玉祥,邓杨清   

  1. 中海油东方石化有限责任公司
  • 收稿日期:2021-02-02 修回日期:2021-07-29 出版日期:2021-11-12 发布日期:2021-10-29
  • 通讯作者: 杨玉祥 E-mail:yangyx3@cnooc.com.cn

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

  • Received:2021-02-02 Revised:2021-07-29 Online:2021-11-12 Published:2021-10-29

摘要: 中海油东方石化有限责任公司采用气相法干气制乙苯(SGEB)技术,新建一套120 kt/a乙苯装置,该技术采用烷基化及烷基转移催化剂、五段层式绝热固定床烷基化反应器、催化裂解干气脱丙烯系统、丙苯塔和脱非芳塔等,使得工艺流程简化,投资省,能耗低。装置以催化裂解干气和外购苯为原料,产品乙苯纯度(w)为99.84%,二甲苯质量分数为0.06%,乙烯转化率为98.94%,二乙苯转化率为74.70%,具有较好的经济效益。

关键词: 苯, 乙烯, 乙苯, 催化裂解干气, 气相烷基化, 烷基转移, 催化剂

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