A kind of mesh extruder and scr catalyst manufacturing process based on extruder

Abstract

The invention discloses a mesh-forming extruder and an SCR catalyst manufacturing process based on the extruder. The mesh-forming extruder includes a die section, a pressure equalizing section, a micro-compression section, a circle and a square section, a transition section one, a pressure equalizing plate, a transition section two, a support plate, an extrusion forming section, an extrusion screw, and a mold section. , pressure equalizing section, micro compression section, circle-intersecting square section, transition section one, pressure equalizing plate, transition section two, support plate, extrusion molding section, and extrusion screw rod are connected in sequence; SCR catalyst manufacturing based on extruder The process steps include batching, mixing, testing I, aging I, filtration and pre-extrusion, aging II, extrusion molding, drying I, testing II, drying II, calcination, cutting, aluminum sulfate treatment, and assembly. Using the present invention, the pressure distribution of the catalyst mud is more reasonable, the internal state of the wet material is stable, the extrusion end face of the product is essentially changed, the annual output of the same extruder can reach 10,000m3, and the production efficiency is high.

Description

technical field [0001] The invention relates to an SCR catalyst extruder, in particular to a mesh-forming extruder and an SCR catalyst manufacturing process based on the extruder. Background technique [0002] The mesh extruder is one of the important equipment in the SCR catalyst manufacturing process. Its performance directly determines the working efficiency of the extrusion process and the distribution of internal stress in the wet billet of the catalyst unit after forming. If the extrusion process is unreasonable, it will lead to uneven distribution of internal stress in the wet billet. This phenomenon will lengthen the adjustment time of the end face during the extrusion process and reduce the working efficiency of the extruder. Various cracks appear, reducing the yield of grade I drying. [0003] When the existing extruders and processes are used, there are often shortcomings such as uneven end faces of catalyst products, cracks, protruding parts in the middle and un...

AI Technical Summary

Problems solved by technology

If the extrusion process is unreasonable, it will lead to uneven distribution of internal stress in the wet billet. This phenomenon will lengthen the adjustment time of the end face during the extrusion process and reduce the working efficiency of the extruder. Various cracks appear, reducing the yield of grade I drying

[0003] When the existing extruders and processes are used, there are often disadvantages such as uneven end faces of catalyst products, cracks, protruding parts in the middle and uncertain positions, and low extrusion efficiency (the annual output of each extruder is 5,000 cubic meters).

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