摘要
在温度220～280℃、液空速0.8～2.0h(1、压力1.3～2.7MPa条件下,于无梯度反应器中测定了ALC-1A型双功能催化剂工业颗粒的宏观反应速率,得到了以逸度表示的甲醇裂解重整多重反应的双速率宏观动力学方程.建立了甲醇裂解重整制氢工业管式反应器的一维拟均相数学模型,以工业反应器结构尺寸和操作数据为基准计算出计入壁效应及催化剂失活的活性校正因子.考察了不同的原料液配比、系统压力、液空速、壁温及进口温度下甲醇的转化率、氢气的时空产率和床层出口温度的变化.结果表明在一定范围内,降低甲醇在原料液中的含量,提高压力,选择适当的液空速和壁温,将有利于提高反应器的操作性能;单纯提高床层进口温度对反应几乎没有影响.
At the operating conditions of 220~280℃, 1.3~2.7MPa, and the liquid volume space velocity 0.8~2.0h-1, the global kinetics of hydrogen production by catalytic decomposition and steam reforming of methanol over the ALC-1A catalyst in a gradientless reactor was studied. The experimental data were used to estimate the double power rate global kinetics equations which were indicated by fugacity. The industrial reactor for methanol decomposition and steam reforming was simulated by one-dimensional pseudo-homogeneous model based on the kinetics equations, and the activity correction which including the wall effect and deactivation of the catalysts factor, could be calculated by using the data from industry. The model developed can be used to describe the change of methanol fractional conversion, space-time yield of hydrogen and the outlet temperature of bed at different operating conditions, such as raw material ratio, pressure, space velocity of liquid, wall temperature and inlet temperature. In certain range, reducing the methanol ratio in raw material, increasing the pressure and choosing the suitable space velocity of liquid and wall temperature will improve the processability of reactor, and the inlet temperature has little influence on the reaction.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2003年第3期298-303,共6页
Journal of Chemical Engineering of Chinese Universities
关键词
甲醇
裂解重整
一维模拟
操作性能
methanol
decomposition and reforming
simulation of one-dimensional model
processability
