气液相法干气制乙苯工艺研究

研究了革与催化裂化于气中体积分数为10％～20％的乙烯在FX－02改性β沸石催化剂上进行烷基化反应合成乙苯的工艺条件，提出适宜的工艺条件为：干气分三段并联进料，反应温度140～160℃，本质量空速2h～(-1)，苯与乙烯摩尔比6～8。在此条件下，乙烯转化率可达到80％～90％，催化剂经1000h运转，乙烯转化率未出现明显的降低。

Alkylation of Benzene with Ethylene in FCC Off-Gas over Zeolite Catalyst

The alkylation of benzene with ethylene in FCC off - gas over catalyst FX - 02 from β zeolite wasstudied with a dry gas pressure of 1. 0 ～ 1. 2 MPa, an ethylene content of 10% ～ 15% and with the content ofother olefins < 1 %, the appropriate operating conditions of alkylation are as follows: the dehydrated and desulfurized feed gas being divided into three parts, temperature 140～ 160 t, benzene WHSV 2 h-1 and benzene to thetotal olefins molar ratio 6/1 ～8/1. Under the experimental conditions aforementioned, the conversion of ethyleneand benzene is 80 % ～9O % and 1O % ～ 15 % respectively. No obvious decrease in ethylene conversion is observedafter 1000 h operation.