Abstract: So far there has not been an universal standard in determining solids content in catalytic cracking slurry oil. Comparisons between current determination methods were seldom reported. In order to provide guidance to the selection of solids content determination methods,the accuracy and precision of four solids content determination methods including filtration,centrifugation,ash analysis and burning method were systematically analysed by experiments,after which the filtration method was further optimized in selection of filter material and dilution solvent. The results showed that filtration method is of both high accuracy and precision and can reflect both catalysts and coke powders contents in slurry oil. The determination result of centrifugation method is too large,with both low accuracy and precision. The determination results of ash analysis and burning method are too small,with high precision but low accuracy. When using filtration method to determine solids content,choosing slow quantitative filter paper as filter material will meet normal accuracy requirements and choosing organic filter membrane with bore diameter of 0.22μm can meet the higher ones. Besides,an aromatic solvent such as toluene can be used as dilution solvent in filtration method.

Key words: measurement, solids content, filtration, centrifugation, ash analysis, burning method

摘要： 目前催化裂化油浆固含量的测定方法没有统一的标准，现行测定方法的比较分析鲜有报道。为了给油浆固含量测定方法的选择提供参考，本文通过实验，系统地比较分析了过滤法、离心法、灰分法以及炭化灼烧法这4种方法在固含量测定方面的准确度和精密度，并对过滤法在过滤材料及稀释剂选择方面进行了进一步的优化分析。结果表明：过滤法的准确度和精密度均较高，且基本能全面反映油浆固含物中催化剂及焦粉的含量；离心法的准确度和精密度均较差，测定结果明显偏大；灰分法及炭化灼烧法的精密度较高，但准确度较低，测定结果偏小；采用过滤法测定固含量时，过滤材料选择慢速定量滤纸即可满足一般的精度要求，当精度要求较高时，过滤材料可选择孔径为0.22μm的有机滤膜，另外稀释剂可选择芳香性溶剂如甲苯。

关键词: 测量, 固含量, 过滤, 离心分离, 灰分, 炭化灼烧