a catalyst lifter

Abstract

The present invention relates to a catalyst lifter. According to the catalyst lifter, a U-shaped pipe shape is adopted, the pipe mouths are respectively a material feeding port and a lifting port, a primary lifting gas connection pipe is horizontally inserted on the bottom portion of the U-shaped pipe on one side of the material feeding port, a secondary lifting gas connection pipe is vertically inserted into the lifting port position from the lower portion of the lifter, a catalyst enters the lifter from the material feeding port, the catalyst on the horizontal section of the lower portion of the lifter is loosed by the primary lifting gas, the secondary lifting gas carries the loosed catalyst into the lifting port, and the carried catalyst flows upward along with the lifting gas. According to the present invention, the problems of insufficient capacity, unsmooth lifting, complex structure, easy catalyst pipeline clogging and the like of the lifter are improved, the stability and the continuity of the catalyst lifting are increased, and the problems of large occupation space, catalyst wear caused by the long catalyst pipeline, and the like in the prior art are improved.

Description

technical field [0001] The invention relates to a small particle catalyst lifter, in particular to a catalyst lifter in a catalyst circulation and regeneration device in continuous catalytic reforming of petroleum processing. Background technique [0002] Catalytic reforming is an important process of petroleum secondary processing, and it is a catalytic reaction process aimed at producing high-octane gasoline components and aromatics. Uninterrupted catalyst delivery is the key to the continuous reforming reaction, and the catalyst lifter is the key equipment to ensure the continuous circulation of the catalyst in the reaction-regeneration system. The catalyst enters the reactor sequentially from the upper hopper by its own gravity, the lower hopper to the catalyst lifter, and then lifts to the upper hopper of the next reactor by means of lifting gas, and then lifts to the regenerator after coming out of the reactor. Coking, oxychlorination, roasting, reduction and other pr...

AI Technical Summary

Problems solved by technology

Although this kind of riser structure solves the problem of catalyst capacity, the structure of the riser is complicated, the internal pressure loss is large, the catalyst is not smooth during the lifting process, and the catalyst pipeline is often blocked, and this structure takes up a lot of space, which is harmful to catalyst wear and tear. Larger, which has caused great hidden dangers to the safe, stable and long-term operation of the device

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