年产1万吨碳酸二甲脂的工艺设计

年产1万吨碳酸二甲脂的工艺设计
摘要：本设计通过对我国近年来碳酸二甲脂的发展状况的分析，比较了近年来碳酸二甲脂的生产工艺，选择尿素和甲醇为原料直接合成法生产碳酸二甲酯产品，以尿素和甲醇为原料，首次采用反应精馏塔生产碳酸二甲酯；通过反应精馏塔上端全凝器分离出氨气，同时反应精馏塔连续采出碳酸二甲酯，该反应器提高了反应的转化率和选择性；在该工艺的设计中，进行物料的热衡算、物料衡算，对主要设备精馏塔几何尺寸、附属设备的选用等相关结构进行了计算，对工厂的环境、安全、经济效益进行评估。

关键词：碳酸二甲脂，甲醇，直接合成法，精馏
An annual output of 10 thousand tons Dimethyl carbonate Process
 Abstract: This design based on recent development status of dimethyl carbonate, comparative analysis in recent years is dimethyl carbonate production process, the choice of urea and methanol synthesis method for raw material production directly, dimethyl carbonate products with urea and methanol as raw material, the first reaction distillation production dimethyl carbonate, Through the whole coagulation responses distillation separate ammonia, simultaneously is continuous extraction distillation reaction dimethyl carbonate, improved the reaction to the reactor conversion and selectivity,
In the process of design, materials and heat balance of material, the main equipment and ancillary equipment cop geometry size selection etc are calculated, the structure of the environment, safety and economic benefits.

Key words:Dimethyl carbonate, methanol,Direct synthesis, distillation

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