Coal-fired power plant chimney anticorrosion material and preparation method thereof

An anti-corrosion material, a technology for coal-fired power plants, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of easy cracking of coatings, difficult construction quality control, frequent maintenance, etc., to improve mechanical strength and fatigue resistance. , long-term high-efficiency protection, and the effect of increasing anti-penetration performance

Active Publication Date: 2017-12-15
WUHAN KEDIAO ELECTRICITY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many chimney anti-corrosion materials on the market that can be used to protect the inner wall of the chimney, such as foamed glass bricks, vinyl glass flake coatings, etc. These chimney anti-corrosion materials have various problems in practical applications, and the effect is not ideal
Foamed glass bricks are prepared by pasting. There are many gaps between the bricks. Because the construction quality is difficult to control, these gaps are often prone to leakage, resulting in the failure of protection.
Vinyl flake coatings are not resistant to cold and heat shock, the coating is easy to crack, frequent maintenance and other problems, it is difficult to achieve the ideal service life

Method used

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Examples

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preparation example Construction

[0049] The embodiment of the present invention also provides the preparation method of above-mentioned chimney anticorrosion material, comprises the following steps:

[0050] S1. Preparation of component A and component D, the preparation sequence of component A and component D is not limited;

[0051] Preparation of component A: in parts by mass, preheat 60-98 parts of furan-modified epoxy resin to 40°C-60°C, add 0.1-0.3 parts of defoamer, 1-3 parts of organic solvent, Disperse at a speed of 800-1000 rpm for 15-30 minutes by a high-speed stirring disperser to obtain component A;

[0052] Preparation of component D: in parts by mass, preheat 60-98 parts of furan-modified epoxy resin to 40°C-60°C, add 0.1-0.3 parts of defoamer, 1-3 parts of organic solvent, Use a high-speed stirring disperser to disperse at a speed of 800-1000rpm (rotation rate per minute) for 3-5 minutes, keep the speed, and gradually add 20-40 parts of glass flakes and 5-10 parts of pigments and fillers, and...

Embodiment 1

[0060] This embodiment provides a coal-fired power plant desulfurization chimney anti-corrosion material with a three-layer structure. The anti-corrosion material includes an undercoat, an intermediate coat, and a top coat. The undercoat includes group A with a mass ratio of 100:35:0.3 component, B component, and C component; the intermediate coating includes D component, B component, and E component with a mass ratio of 100:35:25; the top coat includes D component with a mass ratio of 100:35:60 points, B component, F component; in parts by mass,

[0061] Component A includes 98 parts of furan-modified epoxy resin, 0.2 parts of polysiloxane, and 2 parts of toluene;

[0062] Component B includes 35 parts of low-viscosity modified aromatic amine curing agent;

[0063] Component C includes 0.3 parts of tetrabutyl titanate;

[0064] Component D includes 98 parts of furan-modified epoxy resin, 0.2 part of polysiloxane, 2 parts of toluene, 30 parts of 80-mesh glass flakes, 8 parts...

Embodiment 2

[0075] This embodiment provides a coal-fired power plant desulfurization chimney anti-corrosion material with a three-layer structure. The anti-corrosion material includes an undercoat, an intermediate coat, and a top coat. The undercoat includes group A with a mass ratio of 100:30:0.25 component, B component, and C component; the intermediate coating includes D component, B component, and E component with a mass ratio of 100:30:30; the top coat includes D component with a mass ratio of 100:30:80 points, B component, F component; in parts by mass,

[0076] Component A includes 98 parts of furan-modified epoxy resin, 0.1 part of polydimethylsiloxane, and 1 part of cyclohexanone;

[0077] Component B includes 30 parts of low-viscosity modified aromatic amine curing agent;

[0078] Component C includes 0.2 parts of γ-glycidyl etheroxypropyl trimethoxysilane;

[0079] Component D includes 98 parts of furan-modified epoxy resin, 0.15 parts of polydimethylsiloxane, 1.8 parts of cy...

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Abstract

The invention discloses an anticorrosion material of a coal-fired power plant chimney and a preparation method thereof. The anticorrosion material comprises a base coating, a middle coating and a top coating, wherein the base coating comprises a component A, a component B and a component C in a mass ratio of 100:(20-35):(0.25-0.3); the middle coating comprises a component D, the component B and a component E in a mass ratio of 100:(20-40):(20-40); the top coating comprises the component D, the component B and a component F in a mass ratio of 100:(20-35):(60-90); the component A comprises 60-98 parts of furan modified epoxy resin, 0.1-0.3 part of antifoaming agent and 1-3 parts of organic solvent; the component B comprises 20-35 parts of modified aromatic amine curing agent; the component C comprises 0.1-0.5 part of coupling agent; the component D comprises the component A, 20-40 parts of glass flake, 5-10 parts of pigment filler and 0.1-0.5 part of anti-settling agent; the component E comprises 20-35 parts of glass fiber; and the component F comprises 50-100 parts of anti-acid wear-resistant filler. The anticorrosion material has the advantages of permeation resistance, corrosion resistance, high bonding strength and high-temperature impact resistance and can realize a long-term efficient protection effect on a desulfurization chimney.

Description

technical field [0001] The invention relates to the technical field of chimney anticorrosion, in particular to a coal-fired power plant chimney anticorrosion material and a preparation method thereof. Background technique [0002] With the development of my country's industrialization and the improvement of people's living standards, the demand for electricity is becoming more and more vigorous. However, 75% of my country's electricity supply comes from coal-fired power generation. In order to protect the ever-fragile ecological environment, flue gas desulfurization has become a coal-fired One of the prerequisites for power plants. Limestone wet desulfurization is currently the most commonly used desulfurization method in coal-fired power plants. 2 The removal efficiency is very high, but the more corrosive SO 3 The removal efficiency is not high. After wet desulfurization, the humidity of the flue gas increases and the temperature drops to between 50°C and 58°C. It is eas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
CPCC08L2205/025C08L2205/03C08L2205/035C09D5/08C09D7/61C09D7/70C09D163/00C08L83/04C08K13/04C08K7/00C08K3/40C08K7/14C08K3/34C08K3/36C08L71/02C08L91/00C08K2003/2227C08L71/00
Inventor 胡建勋赵定义屈中伟李欣
Owner WUHAN KEDIAO ELECTRICITY TECH
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