固定床渣油加氢过程的数值模拟  

Numerical Simulation of Fixed-Bed Residue Oil Hydrogenation

作　　者：邓中活 秦娅 DENG Zhonghuo;QIN Ya(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083,China)

机构地区：[1]中石化石油化工科学研究院有限公司,北京100083

出　　处：《石油学报（石油加工）》2023年第4期853-863,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国石油化工股份有限公司项目(119035)基金资助。

摘　　要：采用中东高硫渣油考察了工艺条件对渣油加氢反应的影响,并将该数据对创建的渣油加氢反应器模型进行求解。实验和计算结果表明:反应温度对杂质脱除率的影响最大,体积空速的影响次之,氢分压的影响最小。在反应温度365~395℃、氢分压14~17 MPa、体积空速0.15~0.25 h^(-1)、氢/油体积比800条件下,创建的渣油加氢反应器模型计算的脱杂质率和实验的脱杂质率最大相对误差为6.9%,可以较好地模拟实际反应情况。以实验室装置工况下的气-液传质速率为基准,气-液传质速率提高10倍时,残炭加氢转化率和加氢脱氮率分别提高2.6和6.3百分点;但以渣油加氢工业装置工况下的气-液传质速率为基准,气-液传质速率提高10倍时,残炭加氢转化率和加氢脱氮率仅分别提高0.2和0.6百分点,即气-液传质速率不是反应过程的速控步骤。The impact of the process conditions on the residue hydrogenation reaction was investigated using the Middle East high-sulfur residue,and the data were used to solve the created residue hydrogenation reactor model.The experiment and calculation results show that the reaction temperature has the greatest impact on impurity removal rate,followed by volume space velocity and hydrogen partial pressure.At the reaction temperature of 365—395℃,hydrogen partial pressure of 14—17 MPa,volume space velocity of 0.15—0.25 h^(-1),and hydrogen/oil volume ratio of 800,the maximum relative error between the impurity removal rate calculated by the residue hydrogenation reactor model and the experimental impurity removal rate is only 6.9%,which can better simulate the actual reaction.According to gas-liquid mass transfer rate under the working condition of laboratory devices,when the gas-liquid mass transfer rate is increased by 10 times,the residual carbon hydroconversion rate and hydrodenitrogenation rate are increased by 2.6 and 6.3 percentage points respectively.However,according to gas-liquid mass transfer rate under the working condition of residue hydrogenation industrial devices,when the gas-liquid mass transfer rate is increased by 10 times,the residual carbon hydroconversion rate and hydrodenitrogenation rate are only increased by 0.2 and 0.6 percentage points respectively,suggesting that the gas-liquid mass transfer rate does not correspond to a speed controlling step of the residue hydrogenation process.

关 键 词：渣油加氢 传质 过程强化 数值模拟 

分 类 号：TE624[石油与天然气工程—油气加工工程]