低水油比乙苯脱氢催化剂的开发  

Development of catalyst for ethylbenzene dehydrogenation in low water -oil ratio

作　　者：辛国萍[1] 金朝晖[1] 

机构地区：[1]中国石油兰州石化公司化工研究院,甘肃兰州730060

出　　处：《合成橡胶工业》2001年第2期78-81,共4页China Synthetic Rubber Industry

摘　　要：分析了铁／钾配比、氧化镁、氧化铁、微量元素的氧化物及增强剂等影响乙苯脱氢催化剂性能的因素，并对它们进行了调整，开发出了能适应在低水油比条件下使用的乙苯脱氢３５５ 催化剂。工业应用表明，在乙苯加料量为 １． １～１．２ ｔ／ｈ、温度为 ５９８～６１８℃、液体空速为 ０．４２～０．４６ ｈ－１、水油比为 １． ５７左右的条件下，乙苯转化率、苯乙烯收率和选择性分别为６５．０％，６２．５％，９６．１％。催化剂还具有强度高、堆密度小、自再生能力强等特点。The 355 catalyst for ethylbenzene dehydrogenation used in low water-oil ratio was developed by analyzing and adjusting the factors affecting the properties of catalyst, including mass ratio of K/Fe, amount of MgO, precursor property of iron oxide, microcomponents and silicate. The results showed that in the condition of ethylbenzene feed 1.1 [similar to] 1.2 t/h, temperature 598 [similar to] 618°C, space velocity 0.42 [similar to] 0.46 h-1, water-oil mass ratio about 1.57, the conversion of ethylbenzene was 65.0%, yield and selectivity of styrene were 62.5% and 96.1% respectively. The catalyst also had high side pressure, low bulk density and good capacity of self-generation.

关 键 词：乙苯 脱氢催化剂 苯乙烯 水油比 性能 

分 类 号：TQ426[化学工程]