模拟优化软件在加氢裂化装置中的应用

Application of Simulation Optimization Software in Hydrocracking Unit

基于模拟优化软件Petro-SIM,建立并校正了中压加氢裂化模型HCR-SIM,模拟结果准确度较高,为装置的生产优化提供了理论和数据支撑。并以此模型对不同比例掺炼催化柴油的工况进行比对,发现在掺炼比例达到16.0%时,混合原料的密度超过装置设计要求;掺炼比例为9.5%时,新氢压缩机无法提供足够的氢气满足装置反应所需。随着掺炼比例的上升,精制反应器与裂化反应器的平均床层温度与床层总温升逐渐提高,氢气耗量逐步增加,航煤及柴油产品收率及性质受催化柴油性质的影响较大。工业实践表明,在催化柴油掺炼比例为6.25%时,模拟结果与实际运行的产品收率、产品性质、反应器平均温度等的绝对偏差控制在5%以内。

Based on the simulation optimization software Petro-SIM,the medium pressure hydrocracking model HCR-SIM was established and corrected.The simulation results are of high accuracy,which provides theoretical and data support for the production optimization of the unit.The working conditions of blending catalytic diesel with different proportions were compared with this model.It is found that when the blending ratio reaches 16.0%,the density of mixed raw material exceeds the design requirement,and when the blending ratio is 9.5%,the new hydrogen compressor cannot provide enough hydrogen to meet the needs of the plant reaction.With the increase of blending ratio,the average bed temperature and total bed temperature rise of refining reactor and cracking reactor gradually increased,the hydrogen consumption gradually increased,and the yield and properties of jet fuel and diesel were greatly affected by the properties of catalytic diesel.The industrial practice shows that when the proportion of catalytic diesel is 6.25%,the absolute deviation between the simulation results and the actual operation parameters such as product yield,product properties and reactor average temperature is controlled within 5%.