摘要
对焦化甲苯原料首先进行加氢处理,之后采用连续精馏的方法进行分离与提纯,以得到纯度较高的甲苯产品。加氢阶段有效去除并转化了焦化甲苯中的噻吩、吡啶和烯烃类杂质。精馏阶段采用2塔连续精馏的实验流程,并对流程进行了模拟,分别对2塔的操作参数进行了优化。通过连续精馏实验对模拟结果进行了验证,结果表明,对加氢处理之后的焦化甲苯原料采用NRTL热力学方法得到的精馏模拟结果可得到纯度为99.39%的甲苯产品,证明实验结果与模拟结果吻合较好。
In order to get high pure toluene product, hydrogenation method is applied to the coking toluene material,which is followed by a continuous distillation method. The impurities in the coking toluene like thiophene, pyridine and olefin can be effectively removed and converted during the period of hydrogenation. For the distillation period, a two-column continuous distillation flowsheet is introduced firstly. The distillation flowsheet is then simulated and the operational parameters are optimized as well. Finally, a test of the modding results is made by conducting a continuous distillation experiment. As the simulation result shows, a 99.39% pure toluene product can be achieved by means of NRTL thermodynamic method for the hydrogenated coking toluene material. It is proved that the experiment result matches well with the simulation result.
出处
《现代化工》
CAS
CSCD
北大核心
2012年第6期104-106,108,共4页
Modern Chemical Industry
基金
国家科技支撑项目(2007BAB24B05)
关键词
连续精馏
焦化甲苯
NRTL热力学方法
continuous distillation
coking toluene
NRTL thermodynamic method
