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化工学报  2014 

分段导数分析法用于苯胺甲醛缩合反应过程综合

DOI: 10.3969/j.issn.0438-1157.2014.03.030, PP. 976-980

Keywords: 分段导数分析,多胺制造,二氨基二苯甲烷,过程综合,过程系统,动力学,优化

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Abstract:

苯胺甲醛缩合制多胺的反应是典型的第Ⅲ类反应体系,反应过程复杂。针对反应的阶段性特征,采用分段导数分析法对其进行反应器网络综合,第一阶段应采用DSR或PFR;第二阶段应采用PFR。采用不同的流程结构进行试验,结果为:采用DSR+PFR的流程结构,最终产品中二氨基二苯甲烷(MDA)含量最高;采用PFR+PFR的流程结构,最终产品中二氨基二苯甲烷(MDA)含量次之。试验结果与导数分析法分析结果一致,表明本文所用方法是有效的。

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