中文摘要：

提出以环氧乙烷和氨水为原料，利用管式反应器耦合反应精馏塔合成乙醇胺的过程强化新工艺。该工艺以90％浓度氨水为原料，首先在3MPa，323-343K，氨水与环氧乙烷配比为10：1的条件下，在管式反应器合成乙醇胺混合产品：混合产品经过减压和蒸出过量的氨后，进入反应精馏塔，和另一股环氧乙烷在塔内同时进行化学反应和产物分离。利用AspenPlus软件对工艺的可行性和经济性进行了模拟分析，得到合理的流程方案和适宜的工艺参数，其中反应精馏塔适宜的工艺参数为：操作压力0．05MPa，分离级数10，环氧乙烷和乙醇胺混合产物进料摩尔比1：1，再沸比8，模拟还得到塔内温度和浓度分布。研究表明，在此条件下，环氧乙烷和一乙醇胺在反应精馏塔内转化完全，少量水同时作为催化剂和载热剂从塔顶采出，二乙醇胺和三乙醇胺重组分通过精馏作用由塔底采出。研究表明，本文工艺能使二乙醇胺的选择性达75％以上，同时反应热能得到直接利用，其技术和经济优越性优于现有工艺。

英文摘要：

A new process by combining tubular reactor with reactive distillation column for synthesizing ethanolamine from ethylene oxide （EO） and ammonia was presented. This process used ammonia with a concentration of 90% and a ratio of ammonia to ethylene oxide 10/1 as feed conditions. Firstly, a tubular reactor was used to produce mixed products of ethanolamine from resultants with the reaction conditions of pressure 3 MPa and temperature （323-343） K. The mixture produced was then separated in flash drums and stripping column in order to remove the excessive ammonia. Finally, the mixture reacted together with another stream of ethylene oxide was fed into a reactive distillation column where the chemical reaction and products separation were carried out simultaneously. Simulations based on Aspen Plus simulation package were performed to investigate the feasibility and to identify suitable process conditions. Through simulation, the suitable process parameters in reactive distillation column were obtained as： operating pressure 0.05 MPa, the number of stages 10, the mole ratio of the ethylene oxide to ethanolamines 1/1, boilup ratio 8, and the typically profiles of the temperature and compositions were also provided. The simulation results showed that under the determined conditions, the key component EO and ethanolamine could be converted completely in the reaction distillation column, the water played a role both as catalyst and heat removing agent and recovered from distillate of the column, and the heavy components diethanolamine and triethanolamine were obtained from bottom products of the column. The results showed that the heat released by exothermic reaction can be directly utilized by distillation, and a selectivity of 75% toward the desired product diethanolamine could be achieved, which indicate, both in technical and economic aspects, the potential advantages of the process suggested in this work.