煤油催化加氢除氧效果的模拟评价

为解决烷基苯联合装置加氢单元换热器存在的结焦问题,研究开发了煤油催化加氢除氧工艺。设计了换热器模拟装置进行工艺评价试验,同时考察了除氧催化剂的使用寿命。试验结果表明:加氢除氧工艺能有效地脱除煤油中的溶解氧,加氢处理后煤油在换热器中生成的焦垢晶粒发生了明显的变化,换热器结垢状况得到了改善,延长了运行时间;加氢除氧催化剂具有良好的使用寿命。

Catalytic hydrogenation process simulating evaluation of removing oxygen dissolved in kerosene

The process of catalytic hydrogenating to remove the oxygen dissolved in kerosene has been studied to resolve the problem of coking in the hydrogenating unit of the LAB(linear alkyl benzene) complex.An evaluating unit for simulating the actual conditions of heat exchangers in the plant is designed and manufactured to evaluate the performance of this process.The evaluating results indicated that the shape and size of the coking granule was obviously changed,the running time of heat exchanger got much longer than before and the coking state was improved by thecatalytic hydrogenating process.The catalyzer had a long life for the process.