分子筛吸附干燥氢气的工艺条件优化

Optimization of Hydrogen Gas-Adsorption Drying Process Condition on Molecular Sieves

分子筛的吸附量与很多因素有关,文中就空塔气速、热边界条件、真空再生时间3个因素对分子筛吸附量的影响进行了实验研究,结果表明:实验范围内的空塔气速对吸附总量基本上没有影响,但是空塔气速对单位时间吸附量影响比较大;与自然对流情况相比,吸附床外部的绝热措施可以使吸附量提高95%左右;真空再生时间对吸附量影响比较大,并以5 h为宜.

The adsorption capacity of molecular sieves is related to many factors. This paper experimentally investigates the influences of superficial velocity, the thermal boundary conditions and the vacuum desorption time on the adsorption capacity. The results show that ： （ 1 ） the superficial velocity basically does not affect the total adsorption capacity in the range of the experiment but somewhat greatly affects the adsorption capacity in a unit of time, （2） compared with that in natural convection condition, the adsorption capacity would increase by 95% with the heatinsulating measures outside the adsorbent bed, and （3） the adsorption capacity is somewhat greatly affected by the vacuum desorption time, with a desirable time period of 5 h.