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Anti-corrosion coating applied to hot-blast stove and preparation method of anti-corrosion coating

A corrosion-resistant, hot-blast stove technology, used in anti-corrosion coatings, fire-retardant coatings, cyclodextrin coatings, etc., can solve problems such as cracking, falling off, and affecting the service life of hot-blast stoves

Inactive Publication Date: 2016-11-16
WUHU CHANGQI FURNACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On this basis, the coating of the hot blast stove tends to fall off and crack, which greatly affects the service life of the hot blast stove

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The invention provides a method for preparing a corrosion-resistant coating for a hot blast stove, comprising:

[0014] 1) Soaking river mud in acid solution, then filtering to get filter cake to obtain modified river mud;

[0015] 2) Disperse silica gel, sodium zirconate, rare earth oxide and modified river mud in an organic solvent under ultrasonic conditions, and then filter the filter cake to obtain the activated product;

[0016] 3) Organic silicon, acrylonitrile-butadiene-styrene copolymer, phthalic anhydride, organic solvent, carbon fiber, expanded vermiculite, cyclodextrin and activator are carried out contact reaction under high pressure, airtight condition to Corrosion-resistant coatings for hot blast stoves were prepared.

[0017] In step 1) of the present invention, the specifications of the filter paper used for filtration can be selected in a wide range, but in order to improve the high temperature resistance and corrosion resistance of the corrosion-resi...

Embodiment 1

[0030] 1) Soak the river mud in an acid solution with a pH of 4 (the weight ratio of the river mud to the acid solution is 100:400), and then filter through filter paper with a pore size of 40 μm to obtain a modified river mud;

[0031] 2) Mix silica gel, sodium zirconate, rare earth oxide (cerium oxide), modified river mud and organic solvent (acetophenone) in a weight ratio of 100:15:27:49:500, and heat Disperse for 7 hours at a frequency of 50 MHz, then filter the filter cake to obtain the activated product;

[0032] 3) Silicone (methyltriethoxysilane), acrylonitrile-butadiene-styrene copolymer, phthalic anhydride, organic solvent (cyclohexanone), carbon fiber, expanded vermiculite, cyclodextrin Mix with the activator according to the weight ratio of 100:40:42:330:8:30:9:34, and conduct a contact reaction at 80°C, 1.8MPa and airtight conditions for 8 hours to obtain corrosion-resistant Paint A1.

Embodiment 2

[0034] 1) Soak the river mud in an acid solution with a pH of 3 (the weight ratio of the river mud to the acid solution is 100:300), and then filter through a filter paper with a pore size of 30 μm to obtain a filter cake to obtain a modified river mud;

[0035] 2) Mix silica gel, sodium zirconate, rare earth oxide (praseodymium oxide), modified river mud and organic solvent (acetophenone) in a weight ratio of 100:11:21:40:400, and heat the Disperse for 5h at a frequency of 40MHz, then filter the filter cake to obtain the activated product;

[0036] 3) Silicone (dimethyldiethoxysilane), acrylonitrile-butadiene-styrene copolymer, phthalic anhydride, organic solvent (tert-amyl alcohol), carbon fiber, expanded vermiculite, cyclopaste The essence and the activator are mixed according to the weight ratio of 100:35:38:250:5:25:7:30, and the contact reaction is carried out at 75°C, 1.5MPa and airtight conditions for 6h to obtain the resistant Corrosion paint A2.

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PUM

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Abstract

The invention discloses an anti-corrosion coating applied to hot-blast stove and a preparation method of the anti-corrosion coating. The preparation method comprises: (1), placing canal mud in acid liquid to soak, filtering, and taking out a filter cake to prepare modified cannal mud; (2), dispersing silica gel, sodium zirconate, rare-earth oxide and modified canal mud in an organic solvent under an ultrasonic condition, performing filtration and taking a filter cake, thereby obtaining activators; and (3), performing contact reactions on the organic silicon, acrylonitrile-butadiene-styrol copolymer, phthalic anhydride, organic solvent, carbon fiber, expanded vermiculite, cyclodextrin and the activators under high-pressure and sealing conditions, thereby preparing the anti-corrosion coating applied to the hot-blast stove. The coating prepared by the method has excellent high-temperature resistance and high-corrosion resistance, thereby improving the service life of the hot-blast stove.

Description

technical field [0001] The invention relates to a corrosion-resistant coating, in particular to a corrosion-resistant coating for a hot blast stove and a preparation method thereof. Background technique [0002] As a thermal power mechanical hot blast stove, it began to be widely used in my country in the late 1970s, and has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. The most basic working principle of the hot blast stove is to pass cold air into the interlayer of the furnace to take the heat out of the interlayer to form hot air, and then heat the object through the hot air. [0003] At present, the main structure of the hot blast stove is all metal products. In order to protect the main structure and prevent it from being corroded, it is often necessary to brush the inner and outer surfaces of the main structure with a coating. Since coal products are burned in the combustion chamber of the hot blast...

Claims

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Application Information

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IPC IPC(8): C09D155/02C09D105/16C09D5/08C09D7/12
CPCC09D155/02C08L2201/08C09D5/08C09D5/18C09D7/61C09D7/62C09D7/63C09D7/70C08L5/16C08K13/06C08K9/02C08K3/22C08K7/06C08K7/26
Inventor 萧鲲
Owner WUHU CHANGQI FURNACE
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