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Anticorrosive coating used for flue gas desulfurization equipment and preparation method thereof

A technology for desulfurization equipment and anti-corrosion coatings, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as high cost and short protection time, improve dispersion stability, facilitate preparation, and improve high temperature resistance. and tensile properties

Active Publication Date: 2018-10-23
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the effective protection time is relatively short and the cost is relatively high in the existing desulfurization tower anticorrosion process, the present invention provides an anticorrosion coating for flue gas desulfurization equipment and its preparation method

Method used

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  • Anticorrosive coating used for flue gas desulfurization equipment and preparation method thereof
  • Anticorrosive coating used for flue gas desulfurization equipment and preparation method thereof
  • Anticorrosive coating used for flue gas desulfurization equipment and preparation method thereof

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Embodiment 1

[0048] An embodiment of the present invention provides an anti-corrosion coating for flue gas desulfurization equipment, including A component and B component, and the A component includes the following raw material components in parts by weight:

[0049]

[0050]

[0051] The B component includes the following raw material components in parts by weight:

[0052] 82 parts of isocyanate curing agent;

[0053] Co-solvent 10 parts.

[0054] The above-mentioned first aqueous hydroxyl polyacrylic acid dispersion is Bayer's A2470; the second aqueous hydroxyl polyacrylic acid dispersion is Bayer's A2743; the glass flakes are glass flakes with a sheet diameter of 120 meshes produced by Huawei Glass Flake Factory in Wen'an County; nano titanium dioxide is DuPont's R-103; nano-silicon carbide is 409-21-2 produced by Shanghai Ziyi Reagent Factory; polyethylene wax emulsion is SX123A from Sanxing Chemical Co., Ltd.; carbon black is H200 produced by Shandong Lihua New Material Compa...

Embodiment 2

[0061] An embodiment of the present invention provides an anti-corrosion coating for flue gas desulfurization equipment, including A component and B component, and the A component includes the following raw material components in parts by weight:

[0062]

[0063]

[0064] The B component includes the following raw material components in parts by weight:

[0065] 80 parts of isocyanate curing agent;

[0066] 20 parts of co-solvent.

[0067] The above-mentioned first aqueous hydroxyl polyacrylic acid dispersion is Bayer's A2470; the second aqueous hydroxyl polyacrylic acid dispersion is Bayer's A2743; the glass flakes are glass flakes with a sheet diameter of 120 meshes produced by Huawei Glass Flake Factory in Wen'an County; nano titanium dioxide is DuPont's R-103; nano-silicon carbide is 409-21-2 produced by Shanghai Ziyi Reagent Factory; polyethylene wax emulsion is SX123A from Sanxing Chemical Co., Ltd.; carbon black is H200 produced by Shandong Lihua New Material Co...

Embodiment 3

[0074] An embodiment of the present invention provides an anti-corrosion coating for flue gas desulfurization equipment, including A component and B component, and the A component includes the following raw material components in parts by weight:

[0075]

[0076] The B component includes the following raw material components in parts by weight:

[0077] 74 parts of isocyanate curing agent;

[0078] Co-solvent 26 parts.

[0079] The above-mentioned first aqueous hydroxyl polyacrylic acid dispersion is Bayer's A2470; the second aqueous hydroxyl polyacrylic acid dispersion is Bayer's A2743; the glass flakes are glass flakes with a sheet diameter of 120 meshes produced by Huawei Glass Flake Factory in Wen'an County; nano titanium dioxide is DuPont's R-103; nano-silicon carbide is 409-21-2 produced by Shanghai Ziyi Reagent Factory; polyethylene wax emulsion is SX123A from Sanxing Chemical Co., Ltd.; carbon black is H200 produced by Shandong Lihua New Material Company; iron red...

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Abstract

The invention relates to the technical field of coatings and particularly discloses an anticorrosive coating used for flue gas desulfurization equipment and a preparation method thereof. The anticorrosive coating includes a component A and a component B; wherein the component A includes, by weight, 30-40 parts of a first aqueous hydroxypolyacrylic acid dispersion, 10-20 parts of a second aqueous hydroxypolyacrylic acid dispersion, 20-30 parts of glass flakes, 3-4 parts of nano TiO2, 0.1-0.3 parts of nano-silicon carbide, 0.2-0.4 parts of polyethylene wax emulsion, 0.5-1.5 parts of carbon black, 1.5-2 parts of iron oxide red, 0.5-1.5 parts of a pH regulator, 0.5-1.5 parts of a dispersant, 0.2-0.6 parts of a defoamer, 0.2-0.4 parts of a leveling agent, 0.1-0.3 parts of a wetting agent, 0.1-0.3 parts of a rheologic additive, 3-7 parts of a film forming additive, and 10-20 parts of deionized water; the component B includes, by weight, 70-90 parts of an isocyanate curing agent and 10-30 parts of a cosolvent. The anticorrosive coating is convenient to use, can be cured at normal temperature, has excellent mechanical and anti-corrosion performances, and can protect a base material for a long period.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-corrosion coating for flue gas desulfurization equipment and a preparation method thereof. Background technique [0002] my country is a country with coal as the main energy structure. The air pollution type is mainly coal smoke pollution. The main pollutants are smoke, sulfur dioxide, nitrogen oxides, etc., among which sulfur dioxide is the main cause of acid rain. Therefore, my country's flue gas Desulfurization is imperative. At present, power plants at home and abroad mainly adopt wet desulfurization, and the limestone-gypsum wet desulfurization process is the leading process for desulfurization in thermal power plants in my country. Although the construction and operation experience of flue gas desulfurization is relatively mature, the anti-corrosion technology for desulfurization equipment still needs to be improved. [0003] The wet desulfurization process is mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/61C09D7/65
CPCC09D7/65C09D7/70C09D175/04C09D5/08C09D7/61C08K2003/2241C08K2201/011C08L2205/035C08L2205/025C08L75/04C08L23/06C08K13/04C08K7/00C08K3/04C08K3/34C08K3/22
Inventor 马利纳胡中源董立志王洁
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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