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Special repairing agent for boiler flue gas desulfurization tower and production process of special repairing agent

A technology of boiler flue gas and production process, applied in coating, grain treatment, special surface and other directions, can solve the problems of steel plate corrosion of desulfurization tower tower wall, easy corrosion of desulfurization tower inner wall, affecting the safe operation of equipment, etc., to improve protection The effect of performance, convenient construction and excellent corrosion resistance

Active Publication Date: 2022-01-11
玉和建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a special repair agent for boiler flue gas desulfurization tower and its production process to solve the problem that the inner wall of the desulfurization tower in the prior art is easily corroded and worn, thus causing the steel plate on the tower wall of the desulfurization tower to be corroded, seriously affecting Technical issues of safe operation of equipment

Method used

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  • Special repairing agent for boiler flue gas desulfurization tower and production process of special repairing agent
  • Special repairing agent for boiler flue gas desulfurization tower and production process of special repairing agent

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preparation example Construction

[0029] (1) Preparation of corrosion-resistant layer: take each raw material successively according to the weight ratio, put fly ash, carbon fiber, silicon steel, and ceramic particles into a ball mill for grinding, and the rotating speed of the ball mill is 700-1200r / min. Grind at 30°C for 1 hour to obtain premix A; put polyurethane modified epoxy resin, graphene modified epoxy resin, and acetone into a blender and mix evenly to obtain premix B; under constant stirring, premix B Mixture A is slowly added to premix B in batches, after the addition is complete, stir and mix evenly, add a curing agent, stir and mix evenly again to obtain a corrosion-resistant coating; apply the corrosion-resistant coating to the area to be repaired on the inner wall of the desulfurization tower Spraying, before spraying, perform surface grinding treatment on the area to be repaired. The thickness of spraying is 0.3mm~0.4mm. After spraying, a corrosion-resistant layer is obtained, and the corrosion...

Embodiment 1

[0035] A special repair agent for boiler flue gas desulfurization tower, the repair agent is a multi-layer composite coating, including a wear-resistant layer, a bonding layer, a corrosion-resistant layer, and a corrosion-resistant layer that are sequentially coated on the inner wall of the desulfurization tower from top to bottom Closely attached to the inner wall of the desulfurization tower, the total thickness of the repair agent is 1.8mm, wherein the thickness of the wear-resistant layer is 0.5mm, the thickness of the bonding layer is 1mm, and the thickness of the corrosion-resistant layer is 0.3mm.

[0036] The wear-resistant layer is prepared from the following raw materials in parts by weight: 20 parts of vinyl glass flake glue, 5 parts of alumina corundum ceramic balls, 5 parts of modified hollow glass microspheres, 5 parts of silicon carbide, 5 parts of zirconia, titanium 5 parts of tungsten alloy powder, 30 parts of styrene.

[0037] The binding layer is prepared fr...

Embodiment 2

[0044] A special repair agent for boiler flue gas desulfurization tower, the repair agent is a multi-layer composite coating, including a wear-resistant layer, a bonding layer, a corrosion-resistant layer, and a corrosion-resistant layer that are sequentially coated on the inner wall of the desulfurization tower from top to bottom Closely attached to the inner wall of the desulfurization tower, the total thickness of the repair agent is 2.5mm, of which the thickness of the wear-resistant layer is 0.6mm, the thickness of the bonding layer is 1.5mm, and the thickness of the corrosion-resistant layer is 0.4mm.

[0045] The wear-resistant layer is prepared from the following raw materials in parts by weight: 40 parts of vinyl glass flake glue, 10 parts of alumina corundum ceramic balls, 10 parts of modified hollow glass microspheres, 10 parts of silicon carbide, 10 parts of zirconia, titanium 10 parts of tungsten alloy powder, 40 parts of styrene.

[0046] The bonding layer is pre...

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Abstract

The invention relates to a special repairing agent for a boiler flue gas desulfurization tower and a production process of the special repairing agent. The repairing agent is a multi-layer composite coating and comprises a wear-resisting layer, a bonding layer and a corrosion-resisting layer which are sequentially coated on the inner wall of the desulfurization tower from top to bottom, the corrosion-resisting layer is tightly attached to the inner wall of the desulfurization tower, and the total thickness of the repairing agent is 1.8 mm-2. 5 mm, wherein the thickness of the wear-resisting layer ranges from 0.5 mm to 0.6 mm, the thickness of the bonding layer ranges from 1 mm to 1.5 mm, and the thickness of the corrosion-resisting layer ranges from 0.3 mm to 0.4 mm. The repairing agent forms a composite coating structure with a corrosion-resisting outer layer and a corrosion-resisting inner layer, and each coating can form an interpenetrating network structure in the curing process, so that all the raw materials generate a synergistic effect, the abrasion resistance and the corrosion resistance can be effectively improved, and the use requirements can be well met.

Description

technical field [0001] The invention belongs to the technical field of repairing the inner wall of a desulfurization tower, and in particular relates to a special repairing agent for a boiler flue gas desulfurization tower and a production process thereof. Background technique [0002] Since the boiler flue gas contains a large amount of SO, SO 2 Such as sulfide, before the boiler flue gas is discharged into the external environment, in order to meet environmental protection standards, it must undergo desulfurization treatment to remove the sulfide contained in the flue gas. The desulfurization tower is an important equipment for boiler flue gas desulfurization, and its performance directly determines the desulfurization effect. At present, the desulfurization tower basically adopts the limestone-gypsum wet desulfurization process. Since the interior of the desulfurization tower is at about 100°C for a long time, and the process has the characteristics of strong corrosion o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/00B29B7/00B05D7/00B05D1/38B05D7/24B05D5/00B05D5/08
CPCB02C17/00B29B7/00B05D7/584B05D1/38B05D7/24B05D5/00B05D5/08B05D2504/00
Inventor 宋现玺杨亚伟尚亚军王永东
Owner 玉和建设有限公司
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