CO气相偶联制草酸二乙酯工艺流程模拟  

Simulation of Synthesizing Diethyl Oxalate by Gaseous Phase Coupling Carbon Monoxide and Ethyl Nitrite

作　　者：徐艳[1] 李瑞[1] 陈明鸣[1] 马新宾[1] 

机构地区：[1]天津大学化工学院绿色合成与转化教育部重点实验室,天津300072

出　　处：《高校化学工程学报》2010年第2期208-213,共6页Journal of Chemical Engineering of Chinese Universities

基　　金："十一五"国家科技支撑计划项目(2006BAE02B00)

摘　　要：采用流程模拟软件PRO/II,对一氧化碳与亚硝酸乙酯合成草酸二乙酯工艺过程进行模拟。建立了工业过程设计详细流程,提供了模拟使用的主要物性参数、动力学模型及流程数据及其来源。流程模拟计算结果与实际生产数据吻合证明了模拟的可靠性。模拟考察了一氧化氮再生反应设计转化率对主要过程参数,如循环比、放空气中一氧化氮含量及乙醇补充量的影响。结果表明提高再生过程一氧化氮设计转化率,可以降低循环比,提高偶联过程CO的转化率,但亚硝酸乙酯利用率下降,乙醇补充量需相应提高。再生反应器较为适宜设计条件为:一氧化氮再生转化率为(92±2)%,压力为101.3～150kPa及温度为(308±2)K。Simulation of synthesizing diethyl oxalate by coupling carbon monoxide and ethyl nitrite process was carried out with the help of software PRO/II. A detailed industrial process design flow sheet was presented as well as main physical properties, kinetics, flow sheet data and their resources. Validation of the simulation process was performed by comparing the calculation results with the actual operating data. The study of nitrogen oxide regeneration reaction matching with the other processes was carried out to analyze the effect of designed conversion ratio of nitrogen oxide on primary process parameters, such as recycle ratio, nitrogen oxide molar ratio in purge flow and ethanol supply. Results show that increasing nitrogen oxide designed conversion ratio could decrease the recycle ratio and increase carbon monoxide conversion. However, the utilization of ethyl nitrite would decrease and the ethanol supply should increase accordingly. The appropriate designed parameters of regeneration reactor were proposed to be as follows： nitrogen oxide conversion ratio up to （92± 2）%, regeneration pressure ranged from 101.3 to 150 kPa and reaction temperature about （308±2） K.

关 键 词：草酸二乙酯 偶联再生技术 流程模拟 PRO/II 

分 类 号：TQ018[化学工程] TQ225.242