Hydrogen production
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I’m a beginner and would like to ask what can cause carbon buildup on the catalyst in a conversion furnace?
The water-to-carbon ratio is too low, the temperature in the conversion furnace is too high, the pre-conversion catalyst is poisoned by carbon deposition, and the composition of the feedstock is too heavy.
1. Excessively low water-to-carbon ratio. 2. Catalyst poisoning. 3. Large fluctuations in raw material composition, resulting in poor hydrogenation of olefins. 4. Incomplete reduction of the catalyst. 5. Improper catalyst packing. 6. Significant fluctuations in furnace temperature and system pressure
Excessively high temperature, properties of raw materials, low water-to-carbon ratio, catalyst deactivation, repeated start-up and shutdowns
Heavy feedstocks, high temperatures, imbalanced water-to-carbon ratio, space velocity, reduction efficiency, frequent start-up and shutdowns, etc
1. Catalyst 2. Process parameter control 3. Converter combustion
An excessively low water-to-hydrocarbon ratio is the main cause of catalyst carbon deposition. The activity of the catalyst can be restored by carbonization. We have had two similar experiences.