Two-stage circulating fluidized bed reaction-regeneration system and method for preparing aromatics from syngas

Abstract

A two-stage circulating fluidized bed reaction-regeneration system and method for preparing aromatics from synthesis gas, comprising an aromatization reactor and a catalyst regeneration reactor, the two are connected to each other through pipelines, and the aromatization reactor includes a first The catalyst loading area and the second catalyst loading area; the catalyst regeneration reactor includes the fourth catalyst loading area and the third catalyst loading area, and the hydrocarbon synthesis catalyst and the aromatization catalyst are filled in the aromatization reactor, and under the action of air flow, The hydrocarbon synthesis catalyst mainly stays in the lower area, and the aromatization catalyst mainly stays in the upper area, and it is announced that after the aromatization catalyst is deactivated, it first enters the low-temperature low-oxygen zone of the catalyst regeneration reactor, and then enters its high-temperature high-oxygen zone. The regeneration method of the zone, the invention realizes the control of different temperatures, and reduces the design difficulty of the catalyst.

Description

Technical field

[0001] The present invention relates to the chemical process and the technical field of the apparatus, and in particular, two-stage circulating fluidized bed reaction-regeneration system and method for synthesizing gas prepared aromatic hydrocarbons.Background technique

[0002] Synthetic gastric structuring techniques are emerging aromatics production processes, one of which is to form a hydrocarbon intermediate in synthesis gas, and then prepare a aromatic hydrocarbon by hydrocarbons. The selection advantage of two reactions in one reactor is that no complex hydrocarbon components are separated from hydrocarbons and prepared as a high-purity product, so that the separation unit of two processes that operate independently can be effectively merge. The technical challenge is that the original hydrocarbon synthesis catalyst acts in 300-380 ° C, and the hydrocarbon prepares a aromatic catalyst acts in 350-500 ° C. There is currently reported to prepare multi-function composi...

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