制氢驰放气优化利用方案的研究

制氢装置PSA单元产生的驰放气中含有高浓度的甲烷、氢气、一氧化碳、二氧化碳。比较了变压吸附法、溶剂吸收法和膜分离法分离驰放气中的二氧化碳,从净化气指标、总能耗、运行费用和装置投资方面进行比较,得出变压吸附法分离优于其它两种方案。另外,变压吸附法分离没有涉及化学过程,相比操作运行更简单方便,可实现在线切换吸附器,有利于装置长周期运行。

Study on the Optimization Method of the Purge Gases Use in Hydrogen Production Devices

Hydrogen production device PSA Unit produces purge gases which contain high concentration of methane, hydrogen, carbon monoxide, carbon dioxide and so on. Compared with solvent absorption method and membrane separation method, pressure swing adsorption method （PSA） has obvious advantages in the purity of the purified gas, total energy consumption, running cost and investment; and its operation is simple and convenient since there is no chemical reaction.