催化裂化干气中乙烯与苯液相烷基化反应的研究

研究了以β沸石为酸性成分的YEB催化剂在低温条件下催化裂化干气中乙烯与苯的烷基化制取乙苯过程。在YEB催化剂的作用下，苯与催化裂化干气中局烯态床反应器内可在较温和的条件下进行烷基化反应。在温度150－180℃、压力0．8－1．3MPAa、催化裂化干气中乙烯的重量空速为0．05－0．2h^-1及苯／烯摩尔比＝3－6的反应条件下，可以达到干气中乙烯的转化率≥90％、丙烯的转化率≥99％的反应结果，显示良好的工业应用前景。

LIQUID-PHASE ALKYLATION OF BENZENE WITH DILUTE ETHYLENE IN FCC OFF-GAS

The liquid-phase alkylation of benzene with dilute ethylene in FCC off-gas over β-based catalyst(YEB)has been investigated both in a slurry-bed reactor and a fixed-bed reactor.The results show that the slurry-bed reactor is much better than the fixed-bed reactor under the same reaction conditions for this reaction.In the slurry-bed reactor,more than 90% conversion of ethylene can be achieved under such reaction conditions as:temperature of 150～180℃,pressure of 0.8～1.3MPa,space velocity of 0.05～0.2h-1 and benzene/ethylene molar ratio 3～6.