Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on Ammonia Formation with Nitrogen Impurity at a Natural Gas Steam Reforming Catalytic Process

소량의 질소를 포함한 천연가스 수증기 개질 반응에서 GHSV 변화에 따른 암모니아 생성 반응에 관한 연구

  • KIM, CHUL-MIN (Department of Mechanical Robotics & Energy Engineering, Dongguk University) ;
  • PARK, SANG-HYOUN (Department of Mechanical Robotics & Energy Engineering, Dongguk University) ;
  • LEE, JUHAN (Department of Mechanical Robotics & Energy Engineering, Dongguk University) ;
  • LEE, SANGYONG (Department of Mechanical Robotics & Energy Engineering, Dongguk University)
  • 김철민 (동국대학교 기계로봇에너지공학과) ;
  • 박상현 (동국대학교 기계로봇에너지공학과) ;
  • 이주한 (동국대학교 기계로봇에너지공학과) ;
  • 이상용 (동국대학교 기계로봇에너지공학과)
  • Received : 2019.11.26
  • Accepted : 2019.12.30
  • Published : 2019.12.30
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Abstract

Ammonia would be formed in natural gas containing small amount of nitrogen reforming process in the process natural gas, which might damage the Pt catalyst and Prox catalyst. In the article, the effect of nitrogen contents on the formation of ammonia in the reforming process has been studied. In the experiments, Ru based and Ni based catalysts were used and the concentration of ammonia in the reformate gas at various gas hourly space velocity was measured. Experimental result shows that relatively higher ammonia concentration was measured with Ru based catalyst than with Ni based catalyst. It also shows that the concentration of ammonia increased rapidly after most of the methane converted into hydrogen. Based on the experimental results to reduce ammonia concentration it might be better to finish methane conversion at the exit position of the reforming reactor to minimize the contact time of catalyst and nitrogen with high concentration of hydrogen.

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References

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