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Super critical boiler wear resistant anticorrosion paint and its production method

A supercritical boiler and anti-wear technology, which is applied in the production of anti-corrosion coatings and bulk chemicals, can solve problems such as difficulty in obtaining good results, and achieve the effects of easy spraying construction, fine appearance, and high bonding strength

Active Publication Date: 2006-06-14
上海瀚昱环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to achieve good results with ordinary anti-wear and anti-corrosion coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Group A weight percentage (%)

[0024] 20-80nm Al 2 o 3 17%

[0025] 30~60nm TiC 5%

[0026] 10~50nm SiO 2 25%

[0027] ZrO 2 10%

[0028] CaO·2Al 2 o 3 12%

[0029] Al 2 (Si 4 o 10 )(OH) 2 11%

[0030] Al powder 8%

[0031] CaO 6%

[0032] MgO 2%

[0033] K 2 O 3%

[0034] Na 2 O 1%

[0035] Component B: high temperature adhesive (Na 2 O 3.1 SiO 2 and 10% epoxy acrylate mixed thick colloid solution).

[0036] After ball milling for 50 hours, add component B with a weight ratio of 28% of component A, stir well and adjust it to a slurry state, and spray it with 0.6MPa compressed air to form a coating on the surface of the rust-removed workpiece, with a thickness of 0.5mm, put into use after 24-48 hours of curing.

[0037] The coating made according to the above specifications has the following characteristic effects:

[0038] 1. The bonding strength is above 20MPa.

[0039] 2. Hard phase ha...

Embodiment 2

[0044] Group A weight percentage (%)

[0045] 20-80nm Al 2 o 3 14%

[0046] 30~60nm TiC 3%

[0047] 10~50nm SiO 2 28%

[0048] ZrO 2 9%

[0049] CaO·2Al 2 o 3 9%

[0050] Al 2 (Si 4 o 10 )(OH) 2 12%

[0051] Al powder 9%

[0052] CaO 9%

[0053] MgO 4%

[0054] K 2 O 1.5%

[0055] Na 2 O 1.5%

[0056] Component B: high temperature adhesive (Na 2 O 3.1 SiO 2 and 20% epoxy acrylate mixed thick colloid solution).

[0057]After ball milling for 40 hours, component A is added with component B whose weight ratio is 34% of component A. Stir well and adjust it into a slurry. Spray it with 0.6MPa compressed air to the surface of the workpiece after derusting treatment to form a coating with a thickness of 0.3mm, put into use after 24 to 48 hours of curing.

[0058] The coating made according to the above specifications has the following characteristic effects:

[0059] 1. The bonding strength is above ...

Embodiment 3

[0065] Group A weight percentage (%)

[0066] 20-80nm Al 2 o 3 15%

[0067] 30~60nm TiC 4%

[0068] 10~50nm SiO 2 26%

[0069] ZrO 2 9.5%

[0070] CaO 2Al2O3 10.5%

[0071] Al 2 (Si 4 o 10 )(OH) 2 13%

[0072] Al powder 8.5%

[0073] CaO 7.5%

[0074] MgO 3%

[0075] K 2 O 1%

[0076] Na 2 O 2%

[0077] Component B: high temperature adhesive (Na 2 O 3.1 SiO 2 and 15% epoxy acrylate mixed thick colloid solution).

[0078] After ball milling the component A for 45 hours, add the component B with a weight ratio of 32% of the component A, stir well and adjust it to a slurry state, and spray it with 0.7MPa compressed air to the surface of the workpiece after rust removal to form a coating with a thickness of It is 1.0mm, and it will be put into use after 24-48 hours of curing.

[0079] The coating made according to the above specifications has the following characteristic effects:

[0080] 1. The bonding strength ...

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Abstract

The present invention relates to a production technique of wear-proof anti-corrosion paint, in particular, it relates to a supercritical boiler wear-proof anti-corrosion paint and its production method. Said wear-proof anti-corrosion paint is made up by using nano-grade alumina, titanium carbide, silicon oxide and zirconium oxide, pyrophyllite powder, metal aluminum powder, calcium oxide, magnesium oxide, potassium oxide and sodium oxide and making them undergo the processes of mixing, ball-grinding, adding high-temperature binding agent and fully stirring to obtain uniform slurry material, namely, the invented wear-proof anti-corrosion paint which can be extensively used in the high-temperature application fields of coal-fired power plant boiler pipeline, chemical equipment and metallurgical industry, etc.

Description

Technical field [0001] The invention relates to the production technology of an anti-wear and anti-corrosion coating, in particular to a supercritical boiler anti-wear and anti-corrosion coating and a production method thereof. Background technique [0002] The wear and corrosion of boilers in coal-fired power plants are major problems that plague the safe operation of power plants. Supercritical boilers usually refer to large coal-fired boilers with a pressure above 224.56 gauge and a steam temperature of 540-650°C. The power generation provided by such boilers accounts for more than 80% of the total power generation in the country. Due to the high steam temperature and flue gas temperature of the supercritical boiler, the huge boiler tube system and many other places where problems occur. Among them, the "four tubes" of the boiler (water wall tubes, superheater tubes, reheater tubes, and economizer tubes) are subject to high-temperature erosion and wear of fly ash and hig...

Claims

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Application Information

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IPC IPC(8): C09D5/08
CPCY02P20/54
Inventor 刘少光
Owner 上海瀚昱环保材料有限公司
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