摘要
年产40万吨甲醇合成反应器由两个绝热-管壳复合型反应器并联组成,并共用一个汽包。以CO、CO2加氢合成甲醇的两个平行反应为独立反应,CO和CO2为关键组分建立一维拟均相数学模型,用龙格-库塔法求解,获得催化床内各组分的摩尔分率和床层温度随轴向的分布。针对以天然气为原料的甲醇生产装置,模拟计算了各操作参数,如沸腾水压力和温度、操作压力,对反应器性能的影响,讨论了催化剂不同时期的反应器操作条件。此模型计算预测值与实际生产数据吻合良好。
The 4×10^5t·y^-1 methanol synthesis converter is composed of two parallel adiabatic and tube-shell reactors. An one-dimensional pseudo-homogenous model of converter was developed with hydrogenations of CO and CO2 as the independent reactions as well as CO and CO2 as the key components, and the model was solved by Rung-Kutta method to obtain the axial profiles of temperature and gaseous concentration in the bed. The effects of operating conditions, such as the boiling water temperature and the operating pressure, on the performance of the methanol synthesis converter with the natural gas as raw material were discussed. A stable productivity can be maintained by adjusting the main operating conditions mentioned above in different period. The predicted values of the temperature distribution along the axial position and the yield are almost the same as the practical data obtained from an operating 1×10^5 t·y^-1 converter in a factory.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2006年第3期489-493,共5页
Journal of Chemical Engineering of Chinese Universities
关键词
绝热-管壳催化床
甲醇合成
反应器
数学模型
工况分析
adiabatic and tube-shell catalytic bed
methanol synthesis
reactor
mathematical model
simulation analysis
