Heat-insulation anticorrosive paint for boiler rear smoke channel, preparation method of paint, and paint composition

A tail flue and anti-corrosion coating technology, applied in anti-corrosion coatings, alkali metal silicate coatings, coatings, etc., can solve the problems of wasting manpower, material and financial resources, and inconvenient maintenance

Active Publication Date: 2013-05-08
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of these means wastes too much manpower, material and financial resources, and the maintenance is inconvenient

Method used

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  • Heat-insulation anticorrosive paint for boiler rear smoke channel, preparation method of paint, and paint composition
  • Heat-insulation anticorrosive paint for boiler rear smoke channel, preparation method of paint, and paint composition
  • Heat-insulation anticorrosive paint for boiler rear smoke channel, preparation method of paint, and paint composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Ceramic beads: 28%, silicon carbide: 30%, boron nitride: 25%, fine-grained alumina: 4%, ultra-fine zinc oxide: 3%, titanium oxide: 7%, yttrium trioxide: 3%.

[0020] Coating step: the above-mentioned prepared coating and the base film substance are mixed with a weight ratio of 15:1 to prepare a coating composition, wherein the base film substance comprises 50% aqueous alkali metal silicate solution and 50% colloidal diacetate by weight percentage Aqueous dispersion of silicon oxide. When painting, mix the coating composition and curing agent (organic resin curing agent) at a ratio of 10:1 (weight ratio). When mixing, the paint should be stirred continuously and the curing agent should be slowly incorporated. Then filter the mixed paint with a 40-mesh sieve to make the paint in a suspended state, and the coating needs to be completed within 4 hours, so as to complete the preparation of the coating.

[0021] For the coating that embodiment 1 makes, carry out following pe...

Embodiment 2

[0025] Ceramic beads: 28%, silicon carbide: 23%, boron nitride: 30%, fine-grained alumina: 5%, ultra-fine zinc oxide: 5%, titanium oxide: 8%, yttrium trioxide: 1%.

[0026] Coating step: the paint prepared above and the base film substance are mixed with a weight ratio of 15:1 to make a coating composition, wherein the base film substance comprises 85.5% aqueous alkali metal silicate solution and 14.5% colloidal diacetate by weight percentage Aqueous dispersion of silicon oxide. When painting, mix the coating composition and curing agent (organic resin curing agent) at a ratio of 10:1 (weight ratio). When mixing, the paint should be stirred continuously and the curing agent should be slowly incorporated. Then filter the mixed paint with a 40-mesh sieve to make the paint in a suspended state, and the coating needs to be completed within 4 hours, so as to complete the preparation of the coating.

[0027] For the coating that embodiment 2 makes, carry out following performance t...

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Abstract

The invention relates to heat-insulation anticorrosive paint for a boiler rear smoke channel, a preparation method of the paint, and a paint composition. The heat-insulation anticorrosive paint for the boiler rear smoke channel comprises the following materials according to weight percentage: 20%-30% of ceramic microbeads, 20%-30% of carborundum, 20%-30% of boron nitride, 1%-5% of fine grain alumina, 1%-5% of superfine zinc oxide, 5%-10% of titanium oxide and 1%-3% of yttria. The heat-insulation anticorrosive paint composition for the boiler rear smoke channel provided by the invention is configured as a basement membrane substance and the paint composed of a supermicro fine powder material, wherein the basement membrane substance contains a plurality of OH active groups which fast react with active components of the supermicro fine powder material and an active surface of steel to generate an inorganic polymer with a three-dimensional structure, and a coating comprising the paint composition is integrated with a steel matrix to form a polymer anticorrosive coating with effects of electrochemical protection and physical shielding.

Description

technical field [0001] The invention relates to a boiler tail flue paint, a preparation method thereof and a paint composition, in particular to a boiler tail flue heat-insulating anticorrosion paint, a preparation method and a paint composition. Background technique [0002] The tail flue of the traditional layer-burning furnace is generally welded by steel plates, and the outside of the steel plates is made of insulation materials. The flue gas outlet temperature is controlled above 100 degrees. If the temperature is too low, it will cause the formation of acid, which will corrode the flue and cause shutdown; if the temperature is too high, the waste heat in the flue gas will be wasted. At present, stainless steel or glass fiber reinforced plastics are mostly used to solve anti-corrosion problems, or refractory bricks are used for masonry. The application of these means wastes too much manpower, material and financial resources, and the maintenance is inconvenient. In or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D1/02C09D5/08C09D7/12
Inventor 盛团秀栗少卿董立功洪鹏
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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