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http://dx.doi.org/10.7316/KHNES.2019.30.6.601

A Study on Ammonia Formation with Nitrogen Impurity at a Natural Gas Steam Reforming Catalytic Process  

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)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.30, no.6, 2019 , pp. 601-607 More about this Journal
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.
Keywords
High temperature polymer electrolyte membrane fuel cell(HT-PEMFC); Steam reforming; Ammonia; Gas hourly space velocity(GHSV); Catalyst;
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