Problems with hydrogen production from coking dry gas
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Seeking help: Regarding the production of hydrogen from coking dry gas, the conversion catalyst is experiencing increased pressure difference due to a power outage. Is this caused by the catalyst becoming pulverized or by carbon deposition? During shutdown, the methane content exceeds 70%. Can methane be cracked at temperatures over 600 degrees?
Has it been flowered? Power outages can easily lead to carbon buildup. Steam carrying water tends to cause pulverization. Start it up and take a look. Check the pressure drop and the methane content at the conversion outlet.
What should be done during a power outage to minimize carbon buildup as much as possible? Thank you!
It should be that the carbon buildup reduces the processing capacity; after operating for a while, the pressure drop will decrease
During a power outage, it is necessary to ensure that steam continues to flow through the furnace tubes for an extended period of time; however, the temperatures at the inlet and outlet of the converter must be strictly controlled before the steam supply is stopped.
Carbon deposition occurs when the water-to-carbon ratio is too low; this leads to carbon deposition on the catalyst, an increase in differential pressure, and there is no solution other than replacing the catalyst