复合床变压吸附制氢工艺试验与优化  

Hydrogen purification by multi-bed pressure swing adsorption technology and its optimization

作　　者：刘吉顺[1] 李可彬[1] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000

出　　处：《现代化工》2016年第7期146-149,共4页Modern Chemical Industry

基　　金：四川理工学院研究生创新基金(y2014016)

摘　　要：以活性炭和5A分子筛为吸附剂,H_2、CO、CO_23组分混合为气源,建立了5-1-3P的五塔复合床试验,就变压吸附工艺参数对制氢效果的影响进行了研究。先后进行了单因素试验和响应试验,分析了吸附压力,吸附时间和进料量对H_2的体积分数和回收率的影响,并利用响应曲面法对制氢工艺参数进行了分析和优化。结果表明,对氢气的体积分数影响显著关系为吸附压力>进料量>吸附时间,当吸附压力0.85 MPa,吸附时间80 s,进料量14.5 L/min,氢气体积分数可达99.987%,收率为73.52%,与预测值相对误差很小,说明回归的二次多项方程模型能够较真实地反映试验结果,可用于复合床变压吸附制氢工艺条件的分析和预测。A five-tower multilayer bed test 5-1-3P is established with activated carbon and 5A molecular sieve as adsorbent,the mixture of H_2,CO and CO_2 as a three-component gas source. The influence of pressure swing adsorption（PSA） process parameters on the hydrogen production is studied by single factor test and response test. The effects of adsorption pressure,adsorption time and feed rate on the purity（ vol） and recovery of H_2 are analyzed. Response surface methodology is used to analyze and optimize the process parameters. Th results show that the purity（ vol） of hydrogen is greatly related to the adsorption pressure,the adsorption time and feed rate in a descending order. The purity（ vol） and yield of hydrogen are 99. 987% and 73. 52% respectively,under the following conditions： 0. 85 MPa of adsorption pressure,80 s of adsorption time and 14. 5 L / min of feed rate. Moreover,the relative error between the test value and the forecast value is very small. It indicates that the quadratic regression equation model can be used to truly reflect the test results and to analyze and forecast the process conditions of PSA hydrogen production by compound bed.

关 键 词：复合床 变压吸附 响应曲面法 工艺优化 

分 类 号：TQ028.15[化学工程]