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Abstract

Disclosed are a catalyst pre-hydrocarbon-pooling method and a pre-hydrocarbon-pooling device, relating to the technical field of preparation of low carbon olefins. A regenerated catalyst enters a pre-hydrocarbon-pooling reactor, and a pre-hydrocarbon-pooling reaction occurs between the regenerated catalyst and an activation medium to form “hydrocarbon pool” active species. “Pre-hydrocarbon-pooling” treatment is performed on the regenerated catalyst by providing a pre-hydrocarbon-pooling device, so that the regenerated catalyst forms the “hydrocarbon pooled” active species and carbon deposition before entering into an oxygenate conversion reactor, by way of which “hydrocarbon pool” active species distribution and coke distribution of the catalyst in the conversion reactor are improved. This shortens or eliminates a reaction “induction period” and improves the catalytic activity and selectivity of the regenerated catalyst for a reaction of an oxygenate to low-carbon olefins.

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First Claim