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Preparation method of glass fiber filter felt for waste gas denitration treatment

A technology of glass fiber and chopped glass fiber, which is applied in the field of preparation of glass fiber filter felt for denitrification of exhaust gas, which can solve the problems of low catalyst activity, lack of filter felt, easy deformation and failure, etc., and achieve uniform and full adsorption catalyst with low price , the effect of uniform thickness

Active Publication Date: 2017-03-29
泰山玻璃纤维淄博有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: low catalyst activity per unit volume, high relative load, large volume, many steel structures used, high cost, easy to fall off during operation, and easy to deform and fail under the influence of heat
[0005] At present, there is still a shortage of filter felts suitable for corrugated denitration catalysts in China. How to prepare filter felts with high temperature resistance, high strength, and good catalyst adsorption effect has become an urgent problem to be solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the glass fiber filter felt for denitrification of waste gas:

[0025] Firstly, add the chopped glass fiber into the white water system, stir it, then shape it on the forming mesh belt, dip it in the impregnating solution, cure it at high temperature in the curing furnace, and roll it up to get the filter felt.

[0026] in,

[0027] There are two types of chopped glass fibers, the first type: the fiber diameter is 6 μm, the fiber length is 8 mm; the second type: the fiber diameter is 10 μm, the fiber length is 12 mm, the mass ratio of the first type to the second type is 1:4 .

[0028] The white water system is a mixture of pure water, thickener, dispersant, and defoamer, with a viscosity of 9.0-10cp and an air content of 5-10%; the conductivity of pure water is below 30μs / cm; the thickener It is hydroxyethyl cellulose, the dispersant is cetyltrimethylammonium bromide, and the defoaming agent is silicone oil.

[0029] The process of adding c...

Embodiment 2

[0044] The preparation method of the glass fiber filter felt for denitrification of waste gas:

[0045] Firstly, add the chopped glass fiber into the white water system, stir it, then form it on the forming mesh belt, dip it in the impregnating solution, cure it at high temperature in the curing furnace, and roll it up to get the filter felt.

[0046] in,

[0047] There are two types of chopped glass fiber, the first type: the fiber diameter is 8μm, the fiber length is 6mm; the second type: the fiber diameter is 10μm, the fiber length is 12mm, the mass ratio of the first type to the second type is 3:7 .

[0048] The white water system is a mixture of pure water, thickener, dispersant, and defoamer, with a viscosity of 9.0-10cp and an air content of 5-10%; the conductivity of pure water is below 30μs / cm; the thickener It is hydroxyethyl cellulose, the dispersant is cetyltrimethylammonium bromide, and the defoaming agent is silicone oil.

[0049] The process of adding chopped...

Embodiment 3

[0064] The preparation method of the glass fiber filter felt for denitrification of waste gas:

[0065] Firstly, add the chopped glass fiber into the white water system, stir it, then shape it on the forming mesh belt, dip it in the impregnating solution, cure it at high temperature in the curing furnace, and roll it up to get the filter felt.

[0066] in,

[0067] There are two types of chopped glass fiber, the first type: the fiber diameter is 6 μm, the fiber length is 6 mm; the second type: the fiber diameter is 12 μm, the fiber length is 18 mm, the mass ratio of the first type to the second type is 1:1 .

[0068] The white water system is a mixture of pure water, thickener, dispersant, and defoamer, with a viscosity of 9.0-10cp and an air content of 5-10%; the conductivity of pure water is below 30μs / cm; the thickener It is hydroxyethyl cellulose, the dispersant is cetyltrimethylammonium bromide, and the defoaming agent is silicone oil.

[0069] The process of adding ch...

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Abstract

The invention belongs to the filtering material field, and concretely relates to a preparation method for a glass fiber filtering felt for processing exhaust gas denitration. The preparation method comprises the following steps: firstly, short-cut glass fibers are added in a white water system, stirring is carried out, then shaping on a shaping net belt is performed, dipping in a dipping liquid is carried out, after high-temperature solidification, reeling is carried out, and a filtering felt is obtained. The method employs two kinds of short-cut glass fibers with different diameters and lengths, under action of binders and functional materials in the dipping operation, and the prepared filtering felt is advantaged by high temperature resistance, high intensity, uniform thickness and uniform and full catalyst adsorption. The filtering felt is suitable to be made in a corrugated shape due to the stiffness and the flexibility, and catalysts produced through the filtering felt can work continuously at a high temperature of 250 DEG C for 20000h without maintenance.

Description

technical field [0001] The invention belongs to the field of filter materials, and in particular relates to a method for preparing a glass fiber filter felt for treating waste gas and denitrification. Background technique [0002] With the continuous improvement of environmental protection requirements, the flue gas of power plants must be purified to meet the standard before it can be discharged. Denitration is an indispensable process in the purification process. The development of denitrification catalysts has gone through honeycomb and plate types, and recently corrugated catalysts have appeared. [0003] The honeycomb catalyst is a homogeneous catalyst. Compared with the corrugated and plate types, the volume of the catalyst used to achieve the same denitration efficiency is larger, and its production cost is high and the production cycle is long. Plate-type catalysts are heterogeneous catalysts with stainless steel plates as the carrier. The market share of plate-type ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/20
Inventor 王建刘强陈勇
Owner 泰山玻璃纤维淄博有限公司
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