化工学报Issue(2)：598-605,8.DOI:10.11949/j.issn.0438-1157.20151085
真空变压吸附分离氮气甲烷流程灵敏度分析与优化
Sensitivity analysis and optimization of vacuum pressure swing adsorption process for N2/CH4 separation
孙伟娜 1阎海宇 1张东辉1
作者信息
- 1. 天津大学化工学院，化学工程研究所，化学工程联合国家重点实验室，天津 300072
- 折叠
摘要
Abstract
This paper firstly conducted the experiments for N2/CH4 separation using the vacuum pressure swing adsorption (VPSA) process based on the two-bed experimental set-up and the laboratory-made coconut shell-based activated carbon as adsorbent. The PSA mathematical models were verified by comparing the separation results of experiments and simulations employing gPROMS dynamic simulation software. On this basis, sensitivity analyses were made on the key decision variables affecting product CH4 purity and recovery. Sensitivity analysis indicated that the product purity mainly depended on the raw gas flow and displacement gas flow, while product gas recovery required a good combination of the three key variables. The results showed that the purity of the product gas was mainly regulated by the raw gas flow and displacement gas flow, while a common action of the key variables was required in order to maximize the product gas recovery. Based on the results of the sensitivity analysis, the dynamic optimization was studied for PSA process under consideration. Under optimal conditions, the molar concentration of CH4 may be enriched to 75%and product recovery can be enhanced to 97.08%with feed concentration of 35%. This optimal VPSA process has proved its practicality for the effective recycling of waste gas mixture.关键词
活性炭/变压吸附/甲烷回收/灵敏度分析/优化Key words
activated carbon/VPSA/methane recovery/sensitivity analysis/optimization分类
化学化工引用本文复制引用
孙伟娜,阎海宇,张东辉..真空变压吸附分离氮气甲烷流程灵敏度分析与优化[J].化工学报,2016,(2):598-605,8.
