Plate-type denitration catalyst

A denitrification catalyst, flat plate technology, applied in the field of denitrification process, can solve the problems of high manufacturing cost, low utilization efficiency, easy wear, etc., and achieve the effect of improving activity and service life, simple recycling and high wear resistance

Active Publication Date: 2014-12-17
ZHEJIANG TUNA ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the plate-type catalyst is the most widely used because of its largest flow area. However, the existing plate-type catalysts have defects such as easy wear, high manufacturing cost, serious secondary pollution, and low utilization efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, the base material is stainless steel wire mesh, the mesh density is 90%, and the mesh diameter is 1.0mm, wherein, the mass content of each component is titanium dioxide 80%, particle size is 15-20nm, vanadium pentoxide 1%, ammonium heptamolybdate 7%, lactic acid 2%, glass fiber 5%, silicon dioxide 5%. Mix titanium dioxide, vanadium pentoxide, ammonium heptamolybdate, lactic acid, glass fiber and silicon dioxide evenly, and coat it on the base material stainless steel wire mesh. The thickness of the formed coating layer is 0.9mm, according to the set size After cutting and assembling, put it into an electric kiln for high-temperature sintering at a sintering temperature of 80-120°C for 8 hours, take it out, and cool it down to obtain the flat-plate denitration catalyst of this embodiment.

Embodiment 2

[0020] The base material is stainless steel wire mesh with a mesh density of 90% and a mesh diameter of 1.0mm. Among them, the mass content of each component is 85% titanium dioxide, the particle size is 20-25nm, 1.5% vanadium pentoxide, heptamolybdenum Ammonium acid 7%, lactic acid 1.5%, glass fiber 3.5%, silicon dioxide 1.5%. Mix titanium dioxide, vanadium pentoxide, ammonium heptamolybdate, lactic acid, glass fiber and silicon dioxide evenly, and coat it on the base stainless steel wire mesh. The thickness of the formed coating layer is 0.8mm, according to the set size After cutting and assembling, put it into an electric kiln for high-temperature sintering at 200-280° C. for 7 hours, take it out, and cool it down to obtain the flat-plate denitration catalyst of this embodiment.

Embodiment 3

[0022] The base material is stainless steel wire mesh with a mesh density of 90% and a mesh diameter of 1.0mm. Among them, the mass content of each component is 90% titanium dioxide, the particle size is 18-25nm, 1% vanadium pentoxide, heptamolybdenum Acid ammonium 3.5%, lactic acid 1%, glass fiber 2.5%, silicon dioxide 2%. Mix titanium dioxide, vanadium pentoxide, ammonium heptamolybdate, lactic acid, glass fiber and silicon dioxide evenly, and coat it on the stainless steel wire mesh as the base material. The thickness of the formed coating layer is 1.1mm, according to the set size After cutting and assembling, put it into an electric kiln for high-temperature sintering at a sintering temperature of 350-420°C for 6 hours, take it out, and cool it down to obtain the flat-plate denitration catalyst of this embodiment.

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Abstract

The invention relates to a plate-type denitration catalyst, and belongs to the technical field of a selective catalytic reduction (SCR) catalyst. The catalyst is prepared from a base material, titanium dioxide, vanadium pentoxide, ammonium heptamolybdate, lactic acid, a glass fiber and silicon dioxide, wherein the base material is coated with the titanium dioxide, the vanadium pentoxide, the ammonium heptamolybdate, the lactic acid, the glass fiber and the silicon dioxide and then is sintered to form the plate-type denitration catalyst. The plate-type denitration catalyst is applied to a denitration treatment process, so that the plate-type denitration catalyst has the advantages of being high in mechanical strength, durable and high in denitration efficiency, can be recycled, and the like.

Description

technical field [0001] The invention relates to a flat-plate denitration catalyst, which belongs to the technical field of denitration technology. Background technique [0002] Catalyst is the core part of SCR technology, which determines the denitrification efficiency and economy of the SCR system. According to the structure, it can be divided into plate type, honeycomb type and corrugated plate type. Among them, plate-type catalysts are the most widely used because of their largest flow area. However, existing plate-type catalysts have defects such as easy wear, high manufacturing costs, serious secondary pollution, and low utilization efficiency. [0003] Based on this, make the present invention. Contents of the invention [0004] In order to overcome the above technical problems, the present invention provides a plate type denitration catalyst with high mechanical strength, wear resistance, high denitration efficiency and recyclability. [0005] In order to achieve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/02B01J23/28B01D53/56B01D53/90
Inventor 赵博王亦亲李浙飞卜亚军
Owner ZHEJIANG TUNA ENVIRONMENTAL SCI & TECH
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