CAJ | 학술논문

借助AspenPlus软件，对尿素间接醇解法生产碳酸二甲酯（Dimethyl carbonate，DMC）的工艺中萃取精馏回收甲醇和DMC精制两个过程进行了模拟计算，确定出两个精馏塔的合理工艺参数．萃取精馏塔的塔板数为23块，原料及萃取剂的进料位置分别在第16和第3块塔板，回流比为2．5，在此条件下，塔顶甲醇的质量分率为0．9997；DMC精制塔的塔板数为8块，进料位置在第4块，回流比为0．2，在此条件下，塔顶DMC和塔底碳酸丙烯酯的质量分率均为0．9968．
차조AspenPlus연건，대뇨소간접순해법생산탄산이갑지（Dimethyl carbonate，DMC）적공예중췌취정류회수갑순화DMC정제량개과정진행료모의계산，학정출량개정류탑적합리공예삼수．췌취정류탑적탑판수위23괴，원료급췌취제적진료위치분별재제16화제3괴탑판，회류비위2．5，재차조건하，탑정갑순적질량분솔위0．9997；DMC정제탑적탑판수위8괴，진료위치재제4괴，회류비위0．2，재차조건하，탑정DMC화탑저탄산병희지적질량분솔균위0．9968．
With Aspen Plus software, the technique process of extration distillation to recycle methanol and DMC (dimethyl carbonate) refining, which are the important courses of the DMC manufacturing process through alcoholysis of urea, were simulated, and the preferable technological parameters were deterrnined. The plate number of the extraction column was 23, and the mole reflux ratio was 2. 5, the feed position of the extraction agent and process material was the 8th and 16th plate, respectively. Under this condition, the mass fraction of methanol of the overhead distillate was O. 999 7. The plate number of the DMC refinery column was 8, the mole reflux ratio was O. 2, and the feed position was the 4th plate. Under this condition, the mass fraction of DMC of the overhead stream and the mass fraction of PC ( propylene - carbonate) of the bottom stream were 0. 996 8.