基于非稳定性操作的过程强化研究  

Process intensification based on non-stability operation

作　　者：王士宁 翟持 陈商涛 孙巍[1] 

机构地区：[1]北京化工大学化学工程学院膜分离过程与技术北京重点实验室,北京100029 [2]中石油石油化工研究院,北京100195

出　　处：《计算机与应用化学》2016年第1期17-20,共4页Computers and Applied Chemistry

基　　金：国家重点基础研究发展计划(973)资助项目(2013CB733603)

摘　　要：过程的非稳定性操作有三种常见的形式:输入变化(组分和流量)、过程内部振荡、或外部扰动与过程自身振荡相结合。根据研究,有时过程处于非稳定性操作时具有更高的生产率、转化率、选择性和效率,能获得更好的产品分布和较高的催化剂活性等。本文以串联生物反应体系为研究案例,进行数值延拓计算及分岔分析讨论系统的内在特性,并在此基础上对非定态操作进行系统研究。发现对本案例操作区间的非线性系统周期性输入后,可得到同频率的输出,能够达到过程强化的效果。Unsteady state process operation has been studied under three conditions： （1） input variation （compositions and flow rate）; （2） self-generating oscillations within process and （3） combination of （1） and （2）. It is observed that operation at unsteady state can improve productivity, conversion, selectivity and efficiency, provides better product distribution, and enhances catalytic activity. In this paper, a fermentation process with two reactors in series is studied, process analysis via numerical continuation and bifurcation theory is implemented, then the system with perturbation of operational variables is studied. The result shows that the output is periodic if the input is periodic, and share the same frequency as the input for the studied nonlinear system; and the process performance is significantly enhanced.

关 键 词：分岔理论 数值延拓 生物反应器 强制扰动 

分 类 号：TQ021.8[化学工程]