Performance analysis of VPSA process for separating N2O from adipic acid tail gas

被引：9
作者：
Wu, Tongbo [1 ]
Niu, Zhaoyang [1 ]
Feng, Li [1 ]
Yu, Xiuxin [1 ]
Liu, Bing [1 ]
Zhang, Donghui [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Res Ctr Chem Engn, Tianjin 300072, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2021年 / 256卷
关键词：
VPSA; N2O separation; Performance analysis; Adipic acid tail gas; NITROUS-OXIDE N2O; ADSORPTION PROCESS; CO2; CAPTURE; OPTIMIZATION; SIMULATION; CATALYST; SYNGAS; CARBON;
D O I：
10.1016/j.seppur.2020.117750
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A four-bed and six-bed vacuum pressure swing adsorption (VPSA) process with silical gel were proposed to separate and purify N2O from adipic acid tail gas (N2O/N-2/O-2 = 0.3933/0.5657/0.041 mol%) in nylon plants and then the N2O could be rectified to produce ultra-high purity N2O. The four-bed VPSA process was developed to study the relationship between vacuum pressure and simulation performances, the resulting recovery of N2O exceeds 90% with a purity over 95%. Meanwhile, the six-bed process was designed to explore the effects of vacuum and feed flow rate. The results indicated that a 95.55% purity N2O stream is attained for a process N2O recovery of 97.45%, when the feed flow rate was 1434.8 NL/s and vacuum pressure was 0.247 bar and N2O energy was 4.95 KJ/mol N2O respectively.
引用
收藏
页数：10
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