干燥过程对聚烯烃催化剂用载体硅胶物性的影响  

Influence of drying process on physical property of silica gel carrier for polyolefine catalyst

作　　者：曲其昌 刘文霞 张翠玲 王海 张平生 

机构地区：[1]中国石油兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2008年第2期146-149,共4页Petrochemical Technology & Application

基　　金：中国石油天然气股份有限公司资助项目(项目名称:催化剂载体--硅胶的中试研究;项目编号:040405-03-00)

摘　　要：采用厢式干燥和离心喷雾干燥2种干燥方法,对聚烯烃催化剂用载体硅胶滤饼的干燥效果进行了比较,并研究了干燥过程对硅胶物性的影响。结果表明,厢式干燥法制备的硅胶流动性差,其比孔容、孔径亦小于离心喷雾干燥法制备的硅胶。采用离心喷雾干燥法对硅胶滤饼进行干燥时,优化的工艺条件为:硅胶滤饼打浆转速600r/min、打浆时间40～50min,浆料中总固物质量分数14%～16%、喷雾干燥机的离心转速12000r/min。在此条件下,可得到比孔容为1.40～1.60mL/g、孔径为18.00～22.00nm、比表面积为290.00～350.00m2/g、平均粒径为49.00～58.00μm的硅胶产品。The filter cake of silica gel used as the carrier of polyolefine catalyst was dried by compartment drying and centrifugal spray drying respectively.The drying effect of the two kinds of drying process were compared,and the influences of the drying process on physical property of silica gel carrier were studied.The results showed that the fluidity of the silica gel dried by compartment drying was not good,and the specific pore volume and aperture were smaller than that dried by centrifugal spray drying.The o...

关 键 词：硅胶载体 干燥 厢式干燥 离心喷雾干燥 聚烯烃 催化剂 

分 类 号：TQ426[化学工程]