Powder catalyst dipping method

Abstract

The invention relates to a powder catalyst dipping method, and mainly solves the problems that in the prior art, the dipping effect is poor, and the production efficiency is low. Mixing of dipping liquid and catalyst powder is accelerated by the powder catalyst dipping method and dipping equipment, the dipping equipment is a closed container, the middle of the body of the dipping equipment is cylindrical while two ends of the body of the dipping equipment are conical, a feeding opening and a discharging opening are respectively formed in two conical tops, the closed container is divided into three layers, a heating medium of a middle jacket is low-pressure steam, an insulating material is aluminum silicate rock wool, a material is fed in an inner layer, a linear shovelling plate is arranged on the inner wall of the closed container, the dipping liquid is added through an intermediate shaft of the equipment, one section is used for adding the material while the other section is vacuumized, and rotary dipping is carried out while the dipping liquid is added; the steam is fed into the outer layer to heat the material and the dipping liquid in the container, and the absorption rate is increased; and according to the technical scheme, ageing is carried out after dipping is finished, the problem is solved well, and the powder catalyst dipping method can be used for dipping a powder catalyst.

Description

technical field [0001] The invention relates to a powder catalyst impregnation method. Background technique [0002] Powder catalysts are mainly used in fluidized bed reactors, and their main components include molecular sieves, kaolin, alumina, binders, active metals, etc. The production process includes carrier preparation, impregnation, drying, roasting and the like. The catalyst carrier is in powder form. Due to the small particle size of the catalyst carrier (average particle size is 50-90 μm), the current impregnation method cannot make the active components evenly distributed on the surface and pores of the catalyst carrier (CN203565097). Generally, a sugar coating machine is used for powder impregnation. Since the impregnation equipment has only one driving direction, the powder and the liquid lack relative movement during the impregnation process. The floating phenomenon caused by the small density of the powder particles makes the impregnation liquid and the catal...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the problem of poor impregnation effect and low production efficiency in the prior art, and a new powder catalyst impregnation method is provided

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