激光散射法测定催化裂化催化剂粒度分布的影响因素  

FACTORS INFLUENCING PARTICLE SIZE DISTRIBUTION OF FCC CATALYSTS WITH LASER LIGHT SCATTERING

作　　者：郭瑶庆[1] 朱玉霞[1] 宿艳芳 罗宇屏 

机构地区：[1]石油化工科学研究院,北京100083 [2]齐鲁石化公司催化剂厂 [3]长岭炼油化工有限责任公司催化剂厂

出　　处：《石油炼制与化工》2005年第3期55-59,共5页Petroleum Processing and Petrochemicals

摘　　要：考察了激光散射法测定裂化催化剂粒度分布的影响因素,诸如样品的分散处理方式、测量时间、搅拌速度、遮光度及计算理论的选择等,从而确定了分析条件,即不超声分散,遮光度在13%～18%范围内,搅拌泵速2500r/min,测量时间10s。分析结果表明,催化裂化催化剂经超声分散处理易导致测量结果偏小,采用Mie理论计算模型可以减少分析结果的差异。Factors influencing the particle size distribution of FCC cata ly sts using laser light scattering apparatus were investigated, which are the samp le dispersing style, measuring time, stir speed, obscuration and the selection o f calculating theory. Through investigation, the analysis conditions were withou t using ultrasonic dispersing, an obscuration range of 13% to 18%, stir speed 25 00rpm and a measuring time of 10s. The analysis result showed that dispersing ca talysts by ultrasonic reduced the test value of particle size, using Mie theory as calculation model could lessen the discrepancy.

关 键 词：超声分散 粒度分布 搅拌速度 测量时间 光度 激光散射法 催化裂化催化剂 测量结果 

分 类 号：TE624.91[石油与天然气工程—油气加工工程]