Issues with the shutdown of natural gas-based hydrogen production facilities
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Everyone, during the shutdown of the hydrogen production unit, within the large circulation system, the temperature of the hydrogen production reactor drops. Our operating procedures specify a temperature of 230°C. The hydrogenation reaction is an exothermic reaction, and the methanation reaction is a highly exothermic reaction; therefore, the methanation reaction can occur at low temperatures. So why is the temperature of the hydrogenation reactor controlled at such a low level at this time? Is it to ensure complete reaction of the oil and gas in the system? Also, if a methanation reaction occurs, what is the typical temperature for this reaction? Ours are cobalt catalysts and molybdenum catalysts
After modifying the large circulation, once the methane in the circulating gas has reacted and there is no rise in reaction temperature, the hydrogenation reactor should be shut down promptly.