Modeling and analysis of concentric self-thermal fixed-bed reactor for ammonia decomposition

Yifan Wang, Xuezhi Duan, Wei Wu, Xinggui Zhou

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A concentric self-thermal reactor, in which ammonia decomposition is carried out in the center tube and hydrogen combustion takes place in the annulus was analyzed by modeling and simulation. The performance of the reactor with hydrogen-air flow co-current or counter-current to the ammonia flow was investigated and compared with that under isothermal condition. In the co-current mode, the high concentration of ammonia corresponds with the high heat generation rate of hydrogen combustion, while in the counter-current mode, the combustion heat is firstly used to increase the temperature of the hydrogen-air flow then used by ammonia decomposition. Therefore, the reactor with co-current flow is much more efficient in terms of the high conversion and the full use of hydrogen combustion heat. The co-current flow reactor performs as well as an isothermal reactor when a high conversion is realized.

Original languageEnglish
Pages (from-to)3169-3176
Number of pages8
JournalHuagong Xuebao/CIESC Journal
Volume66
Issue number8
DOIs
Publication statusPublished - 2015 Aug 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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