Catalytic reforming
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What are the functions and differences between the primary lift gas and the secondary lift gas in the regeneration phase of the catalytic reforming reaction?
The primary purpose of the first lift gas is to loosen the catalyst and keep it in a suspended state, while the secondary lift gas is used to control the lifting rate of the catalyst!
The secondary gas serves to loosen the material, controlling the amount of catalyst that enters the lift pipe; in other words, it controls the catalyst circulation rate, while the primary gas plays a role in lifting the material