三环芳烃菲在浆态床内的催化加氢转化及动力学研究

Kinetics of Catalytic Hydrogenation of Phenanthrene in Slurry Bed

采用振荡式浆态床反应器研究了Ni Mo催化剂作用下的菲催化加氢行为及其动力学,考察了反应温度和氢初压对菲催化加氢反应的影响。实验结果表明,提高反应温度和氢初压均有利于菲催化加氢反应,在反应温度380℃、氢初压9 MPa、反应时间30 min的条件下,菲催化加氢转化率可达80.34%。菲催化加氢反应符合Langmuir-Hinshelwood机理,菲和H2均为分子状态吸附,催化加氢反应过程中的表面反应为控制步骤,由此推导的反应动力学方程与实验数据十分吻合,并同时用统计检验法验证了机理假设的合理性。由实验数据求得菲在浆态床内催化加氢的活化能为25.99 k J/mol。

The catalytic hydrogenation of phenanthrene on the NiMo catalyst and its kinetics were investigated in a vibrated slurry bed reactor. The effects of reaction temperature and initial hydrogen pressure on the catalytic hydrogenation were researched,which showed that their increases were benefi cial to the catalytic hydrogenation of phenanthrene. The conversion of phenanthrene reached 80.34%under the conditions of initial hydrogen pressure 9 MPa,380 ℃ and 30 min. It was indicated that,the catalytic hydrogenation reaction of phenanthrene accorded with the Langmuir-Hinshelwood mechanism,phenanthrene and hydrogen were adsorbed on the catalyst surface in molecular state and surface reactions were the control steps in the reaction process. The reaction kinetics equation agreed with the experimental data well. The rationality of the mechanism hypothesis was verifi ed by statistical test. The activation energy of the catalytic hydrogenation is 25.99 k J/mol under the test conditions.