【摘要】 本文建立了I.C.I.四段原料气冷激式甲醇合成塔催化床的数学模型,并提出了计算最小催化床体积的最优设计工况的直接搜索法,求得了数值解。将管壳式及冷激式甲醇合成塔进行了比较,同样的入塔气体组成及产量,鲁奇管壳型合成塔需装填的催化剂量较少,并且轴向操作温度平稳,回收蒸汽量多,但I.C.I.四段冷激式合成塔结构简单,能适应增加操作压力及单系列大型化生产的需要。更多还原

【Abstract】 In this paper, the mathematical model of catalyst beds of I. C. I. four stage methanol synthesis reactor quenching with feed gas has been established. The direct searching method for calculating optimum operation condition with minimum volume of the catalyst beds has been proposed and the numerical solution has been obtained. The tube-shell type methanol synthesis reactor has been compared with the quench type reactor with the same production and the same feed gas composition, the amount of catalyst loaded in the Lurgi tube-shell type synthesis reactor is less, the operation temperature profiles in the axial direction is flat and more amount of steam can be recovered. But the I. C. I. four stage quench type reactor is simpler in structure and is adequate for increasing the operation pressure and to meet the requirement of single-unit with large scale.更多还原