Syngas peroxides: a protection issue for shift catalysts! !
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I would like to ask experts: how can the catalysts used in syngas peroxide conversion be protected? ? What measures can be taken to protect the catalyst? ? By the way, could you explain the issue regarding syngas peroxides? ? Under what conditions does syngas peroxide occur? ? How to discover it? ? How to deal with it? ? Looking forward to answers from experts! !
Syngas peroxide is generally caused by an excess of oxygen being added, which does not react completely within the reaction time and then enters the subsequent system. At this time, the oxygen-to-coal ratio is definitely high, and the temperature of the gasifier is also on the high side. If this is detected, please provide guidance on how to address it promptly. As for transformations, I don’t know much about them; I’m still learning it.
If the oxygen content in the gas exceeds 1.0%, the gas supply must be cut off immediately. The main reasons for the high oxygen content are: accumulation of deposits in the gasification furnace ； Internal leakage of the valve, etc.
There should also be a range for the oxygen peroxide in the syngas; if there’s too much oxygen peroxide, wouldn’t it explode right in the carbon scrubber, leaving no time for any conversion process?
The peroxide oxygen content may not be very high, and it has not reached the explosive limit; however, for the catalyst used in this transformation process, it can no longer handle such conditions. Could some expert please explain this in more detail? For example, at what oxygen level is it considered excessive, and what should be done once this occurs? !
The issue with syngas peroxides is mainly related to gasification; factors such as the oxygen-to-coal ratio, valve leaks, and the oxygen content in the conversion system – which should be between 0.5 and 0.8, while a level of 1.0 requires an emergency shutdown