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Anti-corrosion and anti-sticking coating for fire grate segment of garbage incinerator as well as preparation method and application of anti-corrosion and anti-sticking coating

A garbage incinerator and anti-sticking coating technology, which is applied in the direction of anti-corrosion coatings, coatings, fire-proof coatings, etc., can solve the problems of corrosion problems that cannot be effectively solved, difficult to promote, and high cost, and achieve good anti-corrosion and anti-sticking effects. The effect of avoiding coating cracking and simple construction method

Active Publication Date: 2022-06-21
深圳优易材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the corrosion problem cannot be effectively solved at present, the problem is usually solved by improving the material to reduce the corrosion degree or replacing and repairing the grate
Although these two methods are simple, the casting and processing grate pieces have a long period, high cost, and the replacement process is complicated, which virtually increases the economic cost and labor intensity.
[0005] In order to realize the wear-resistant and anti-corrosion performance of the grate of waste incinerator, applying a wear-resistant and anti-corrosion coating on its surface is a relatively common and low-cost method. However, the coating is mainly made of nickel-chromium alloy, and the method of thermal spraying is expensive, the application process is complicated, and it is not easy to popularize, and the wear-resistant and anti-corrosion performance of the coating is not optimal.

Method used

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  • Anti-corrosion and anti-sticking coating for fire grate segment of garbage incinerator as well as preparation method and application of anti-corrosion and anti-sticking coating
  • Anti-corrosion and anti-sticking coating for fire grate segment of garbage incinerator as well as preparation method and application of anti-corrosion and anti-sticking coating

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Experimental program
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preparation example Construction

(3) After surface drying in the above construction environment for 0.5-1h, heat up to 50-70°C and dry for 1-2h, then continue to heat up to 200-250°C to dry and cure for 0.5-1h, that is, the anti-corrosion and anti-sticking coating is prepared waste incinerator grate pieces. The thickness of the formed anti-corrosion and anti-sticking coating can be 0.5-1 mm.

[0034] The construction method of the waste incinerator grate sheet of the present invention is simple, and the conventional spraying process can be used, and the curing temperature is not high, which can effectively save energy and reduce costs. At the same time, the present invention adopts a two-step drying method, which can not only ensure the rapid drying of the coating, but also avoid cracking of the coating caused by excessive drying of the coating, which has an unexpected technical effect. The drying method can fully ensure the metal oxidation The full hydrolysis of the material sol and the rapid and sufficient ...

Embodiment 1

[0044] Prepare the following raw materials in parts by weight: 30 parts of titanium oxide sol, 30 parts of zirconia sol, 3 parts of fluorine-doped graphene, 5 parts of boron nitride, 5 parts of tungsten carbide, 2 parts of α-corundum, 3 parts of alumina fiber, 4 parts of silicon carbide fiber, 5 parts of compatibilizer, 2 parts of silane coupling agent, 6 parts of auxiliary agent, and 50 parts of solvent.

[0045] Wherein, the solid content of titanium oxide and zirconium oxide sol is 10-15%, and the particle size is 10-30nm; the fluorine doping amount in the fluorine-doped graphene is 15wt%, and the sheet thickness of graphene is 1-10nm , the length of graphene sheets is 10–100 μm. The nano-ceramic powder is selected from α-corundum, boron nitride and tungsten carbide, with a particle size of 20-40 nm; the diameter of the aluminum carbide fiber and silicon carbide fiber is 5-10 μm.

[0046] The compatibilizer has a structure shown in formula (I): R1(Me)2Si-(O-SiR2R3-)m-(OSiR...

Embodiment 2

[0052] The compatibilizer has a structure shown in formula (I): R1(Me)2Si-(O-SiR2R3-)m-(OSiR2R4-)n-O-Si(Me)2R1, (I); wherein, R1 is A C6 straight-chain alkyl group with a carbon-carbon double bond, R2 and R3 are each independently a C5 alkyl group, R4 is -OSi(Me)3, m is an integer of 60-80, and n is an integer of 3-6. The auxiliary agent is 1 part of wetting and dispersing agent, 0.5 part of leveling agent, 0.5 part of defoamer, and 3 parts of anti-settling agent; the solvent is selected from 20 parts of propylene glycol methyl ether acetate, 20 parts of butanol, three 20 parts of diethylene glycol.

[0053] Preparation of anti-corrosion and anti-stick coating:

(1) Weigh fluorine-doped graphene, nano-ceramic powder, and anti-corrosion filler, add them to the solvent and mix them evenly, add the silane coupling agent dropwise and continue to stir evenly, the rotation speed is 700rpm, and the time is 40min;

(2) Add metal oxide sol, compatibilizer, and additives to the mixtur...

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Abstract

The invention relates to an anti-corrosion and anti-sticking coating for a fire grate segment of a garbage incinerator as well as a preparation method and application of the anti-corrosion and anti-sticking coating. The paint of the anti-corrosion and anti-sticking coating is prepared from the following components: 40 to 60 parts of metal oxide sol, 2 to 4 parts of fluorine-doped graphene, 8 to 12 parts of nano ceramic powder, 6 to 8 parts of anti-corrosion filler, 3 to 6 parts of compatilizer, 1 to 3 parts of silane coupling agent, 4 to 7 parts of auxiliary agent and 40 to 60 parts of solvent, and the sum of all the components is 100 parts.

Description

technical field [0001] The invention relates to the field of garbage incineration equipment, in particular to a grate piece of a garbage incinerator and a coating implementation method thereof. Background technique [0002] At present, countries in the world generally use incineration to treat municipal solid waste. Incineration treatment has the advantages of less land occupation, easy site selection, short treatment cycle, significant reduction, complete harmlessness, and recyclable waste incineration waste heat. Most of the incinerators are grate-type incinerators. Grate-type incinerators have the advantages of low requirements for waste pretreatment, wide range of heat value for waste, and easy operation and maintenance. The key combustion equipment is the grate. The grate is generally made of high chromium molybdenum alloy, heat-resistant, wear-resistant, and corrosion-resistant cast steel. The material performance and structure are relatively unique. [0003] The serv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/61C09D7/63B05D5/00B05D5/08B05D3/04
CPCC09D1/00C09D5/08C09D5/18C09D7/61C09D7/63C09D7/70B05D5/00B05D5/08B05D3/0413
Inventor 高彦峰
Owner 深圳优易材料科技有限公司
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