Pre-lift medium for catalytic cracking units
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This post was last edited by Refiner on 2017-1-15 at 16:45. Dear seniors, steam is used at the bottom of the lift pipe in our unit to pre-lift the catalyst. I’m thinking that in order to reduce the risk of the catalyst becoming deactivated due to water vapor, could we use natural gas instead for lifting the catalyst? ? ? Could the seniors give some advice? ? ?
Self-produced dry gas is better, as at least the pressure and flow rate are stable.
Dry gas won’t work; the pressure is unstable. Natural gas has more stable pressure
Using natural gas instead of domestically produced dry gas is a huge waste; why is the pressure of domestically produced dry gas unstable? This situation is quite rare.
Our factory uses dry gas, so there’s no instability
800,000 tons per year: originally using steam technology, now converted to dry gas lift with catalyst for improved stability.
Using dry gas as a pre-lifting medium is not a new technique in catalysis; it is a fairly mature application that can be improved. Natural gas is indeed being wasted, and it is recommended that the person in question address the issue at its source – why is the dry gas unstable? There are fluctuations; resolving the issue with dry gas fluctuations is beneficial for stable absorption operations, dry gas desulfurization processes, as well as for the pre-heating of dry gas.
Is there a catalysis question bank? Could you share it?
Is there a catalysis question bank? Could you share it?