The main purpose of this article is to study the function of catalyst promoters, such as SO42-/Fe2O3, SO42-/Fe2O3 supported by active carbon and active carbon plus fuming sulfuric acid, in the reaction between chlorin...The main purpose of this article is to study the function of catalyst promoters, such as SO42-/Fe2O3, SO42-/Fe2O3 supported by active carbon and active carbon plus fuming sulfuric acid, in the reaction between chlorine and acetic acid which used acetic anhydride as catalyst. We found that SO42-/Fe2O3 supported by active carbon has the highest activity among these catalyst promoters in this reaction.To a certain extent, not only the production of MCA and reaction velocity can be raised, but also the production of DCA can be depressed.展开更多
以醋酐精馏装置为研究对象,对其精馏工艺流程进行了模拟计算与优化分析。对工厂实际流程进行模拟计算,确定了模型的可行性和合理性;根据计算结果优化了现有三塔流程,确定醋酸塔理论板数和进料位置分别为32和10,醋酐塔为20和8,双醋酸亚乙...以醋酐精馏装置为研究对象,对其精馏工艺流程进行了模拟计算与优化分析。对工厂实际流程进行模拟计算,确定了模型的可行性和合理性;根据计算结果优化了现有三塔流程,确定醋酸塔理论板数和进料位置分别为32和10,醋酐塔为20和8,双醋酸亚乙酯(EDA)塔为10和5,又对塔顶压力分别为20、30、40 k Pa的工况进行了模拟计算,得到结论,操作压力越低,能耗也越低;分析了醋酐塔和EDA塔塔釜出料组成,改进为两塔流程,并进行了优化分析,提出了2种不同操作压力(20、30 k Pa)下的优化方案,分别比原三塔流程能耗降低14.7%和3.4%,改造后新的20 k Pa两塔流程操作能耗较原三塔流程降低13.9%。展开更多
文摘The main purpose of this article is to study the function of catalyst promoters, such as SO42-/Fe2O3, SO42-/Fe2O3 supported by active carbon and active carbon plus fuming sulfuric acid, in the reaction between chlorine and acetic acid which used acetic anhydride as catalyst. We found that SO42-/Fe2O3 supported by active carbon has the highest activity among these catalyst promoters in this reaction.To a certain extent, not only the production of MCA and reaction velocity can be raised, but also the production of DCA can be depressed.
文摘以醋酐精馏装置为研究对象,对其精馏工艺流程进行了模拟计算与优化分析。对工厂实际流程进行模拟计算,确定了模型的可行性和合理性;根据计算结果优化了现有三塔流程,确定醋酸塔理论板数和进料位置分别为32和10,醋酐塔为20和8,双醋酸亚乙酯(EDA)塔为10和5,又对塔顶压力分别为20、30、40 k Pa的工况进行了模拟计算,得到结论,操作压力越低,能耗也越低;分析了醋酐塔和EDA塔塔釜出料组成,改进为两塔流程,并进行了优化分析,提出了2种不同操作压力(20、30 k Pa)下的优化方案,分别比原三塔流程能耗降低14.7%和3.4%,改造后新的20 k Pa两塔流程操作能耗较原三塔流程降低13.9%。