CAJ | 학술논문

在小试基础上，对尿素与丙二醇合成碳酸丙烯酯进行了千吨级中试研究。中试试验结果表明，在反应温度120～180℃、反应压力30～60 kPa、反应时间2～4 h、尿素与丙二醇物质的量之比1．0∶1．5、催化剂使用量为1％（质量分数）的条件下，产品碳酸丙烯酯的收率为92％～95％。在反应过程中，催化剂采用过滤的方法回收后可循环使用；反应产物经减压精馏后，产品碳酸丙烯酯的纯度为99．5％（质量分数）以上，各项质量指标均达到了优级品的要求。
재소시기출상，대뇨소여병이순합성탄산병희지진행료천둔급중시연구。중시시험결과표명，재반응온도120～180℃、반응압력30～60 kPa、반응시간2～4 h、뇨소여병이순물질적량지비1．0∶1．5、최화제사용량위1％（질량분수）적조건하，산품탄산병희지적수솔위92％～95％。재반응과정중，최화제채용과려적방법회수후가순배사용；반응산물경감압정류후，산품탄산병희지적순도위99．5％（질량분수）이상，각항질량지표균체도료우급품적요구。
Based on laboratorial scale experiment , a kiloton pilot-plant study is carried out of synthesis of propylene carbonate by using urea and propylene glycol .Pilot-plant study results show that under conditions of reaction temperature 120~180 ℃, reaction pressure 30~60 kPa , reaction time 2~4 h, molar ratio of urea to propylene glycol 1.0∶1.5, and catalyst quantity 1%(mass fraction), recovery rate of product propylene carbonate is 92% ~95%.In reaction process, the catalyst, recovered by filtration , is reusable;after vacuum rectification of reaction product , the purity of product propylene carbonate is more than 99.5%(mass fraction), the quality indexes meet the requirements of premium grade .