关键词: 工业氢, 碳氧化物, 低温甲烷化, 燃料电池氢

Abstract: In order to solve the shortage problem of hydrogen resource for fuel cells, a refining company expanded the application of low-temperature methanation technology to remove carbon oxides in industrial hydrogen to produce fuel cells hydrogen. The process is the first to produce fuel cell hydrogen in China, which solves the "bottleneck" of fuel cell hydrogen resources and achieves good social and economic benefits. Compared with the common pressure swing adsorption (PSA) method for fuel cell hydrogen production, the loss rate of hydrogen by applicating the low-temperature methanation technology can be reduced by about 20%, and the investment can be saved by 70%. The annual cost can be reduced by 4.9 million Yuan according to the scale of hydrogen production of 3 000 m³/h. Under the situation that the by-product hydrogen resource is insufficient and the hydrogen balance of the whole plant needs to be met by hydrogen production, it has great advantages and rationality to produce fuel cell hydrogen by using the industrial hydrogen produced by hydrogen production plant as raw material and using low-temperature methanation technology.

Key words: industrial hydrogen, carbon oxides, low temperature methanation, fuel cells hydrogen