Experiment on the separation of tail gases of ammonia plant via continuous hydrates formation with TBAB. (25th May 2015)

• Record Type: Journal Article
• Authors: Sun, Qiang; Liu, Jian; Liu, Aixian; Guo, Xuqiang; Yang, Lanying; Zhang, Jingwen
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 19(2015)
• Page Start: 6358
• Page End: 6364
• Publication Date: 2015-05-25
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2015.03.111
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">We used hydrate separation method in this paper to recover H₂ and N₂ from tail gases of ammonia plant in the presence of tetra-n-butylammonium bromide (TBAB). The formation condition of H₂/N₂/CH₄/TBAB hydrates was measured by pressure search method. Then the continuous separation of H₂/N₂/CH₄ via hydrates formation was conducted in the presence of TBAB, and a two-stage separation process was proposed to increase the recovery of H₂ and N₂. The influences of experimental pressure, temperature and gas flow on the separation results were investigated. The results show that the total concentration of H₂ and N₂ in the unhydrated gas (recovered gas) is 95.28 mol%, and the total recovery of H₂ and N₂ is more than 90%. This work supplies the preliminary ideas and fundamental data for the industrial application of hydrate separation method.</p> </sec> </abstract>