催化裂化原料特性因子的计算

根据诺谟图，在已知原料完整馏程数据的条件下关联出平均沸点计算式，并关联出原料密度与温度的关系式，据此可以计算特性因子。依据原料的密度和10%馏出体积时的温度数据，建立了原料立方平均沸点的关联式，可以在催化裂化装置原料日常分析数据基础上进行特性因子计算，该关联式的计算结果与实际值的相对误差小于4%，具有良好的模拟精度。

CALCULATION OF CHARACTORIZATION FACTOR OF FCC FEEDSTOCKS

By nomograph, the average boiling point and the relationship between density and temperature of the feedstock can be established using a correlation formula developed when the complete distillation data of feedstock are available. The characterization factor is then able to be calculated based on the correlations of the average boiling points and density of feedstock. Using feedstock density and temperature at distillation volume of 10%, another correlation for calculating the average boiling points is also developed. This correlation can be used to evaluate the characterization factor with routine analysis data of FCC feed. The relative error of the correlation is less than 4%. Therefore, the correlation has good simulation accuracy.