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A steel chimney inner wall anti-corrosion structure and its construction method

A construction method and chimney technology, which are applied in combustion methods, building components, building structures, etc., can solve the problems of easy penetration of foamed glass brick lining, high cost of titanium-steel composite panels, poor acid and corrosion resistance, etc., and achieve light weight. , Improve the bonding force, the effect of good thermal insulation performance

Active Publication Date: 2020-10-02
成都云白环境设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a steel chimney inner wall anti-corrosion structure and its construction method, to solve the problems that the existing steel chimney inner wall anti-corrosion structure adopts foamed glass bricks for easy penetration, poor acid resistance and corrosion resistance, and easy to fall off. Flake coating and vinyl cool glass flake coating has poor temperature resistance, easy to corrode, easy to fall off, short service life or high cost of titanium steel composite board

Method used

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  • A steel chimney inner wall anti-corrosion structure and its construction method

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Embodiment 1

[0030] An anti-corrosion structure for the inner wall of a steel chimney, which sequentially includes an adhesive layer 2 coated on the inner wall of a steel chimney 1, a shrinkage structure layer 3 adhered to the adhesive layer 2, and a shrinkage layer coated on the surface of the shrinkage structure layer 3 from outside to inside. top coat 4;

[0031] The adhesive layer 2 is an epoxy adhesive, and the thickness of the adhesive layer 2 is 3mm;

[0032] The shrinkage structure layer 3 includes a honeycomb network 311 layer 31 and a sealing layer 32, and the honeycomb network 311 layer 31 is a honeycomb network 311 filled with a blend 312 of epoxy resin powder, polyimide powder and liquid phenolic resin , the mixing ratio of the blend 312 is epoxy resin powder: polyimide powder: liquid phenolic resin is 3:3:4 (weight), the thickness of the honeycomb network 311 is 75mm, the sealing layer 32 Coated on the surface of the layer 31 of the honeycomb network 311, the sealing layer 3...

Embodiment 2

[0043] An anti-corrosion structure for the inner wall of a steel chimney, which sequentially includes an adhesive layer 2 coated on the inner wall of a steel chimney 1, a shrinkage structure layer 3 adhered to the adhesive layer 2, and a shrinkage layer coated on the surface of the shrinkage structure layer 3 from outside to inside. top coat 4;

[0044] The adhesive layer 2 is an epoxy adhesive, and the thickness of the adhesive layer 2 is 2mm;

[0045]The shrinkage structure layer 3 includes a honeycomb network 311 layer 31 and a sealing layer 32, and the honeycomb network 311 layer 31 is a honeycomb network 311 filled with a blend 312 of epoxy resin powder, polyimide powder and liquid phenolic resin , the mixing ratio of the blend 312 is epoxy resin powder: polyimide powder: liquid phenolic resin is 1:5:4 (by weight), the thickness of the honeycomb network 311 is 60mm, the sealing layer 32 Coated on the surface of the layer 31 of the honeycomb network 311, the sealing layer...

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Abstract

The invention discloses a steel chimney inner wall anticorrosive structure and a construction method thereof, and relates to the technical field of chimney anticorrosion. The steel chimney inner wallanticorrosive structure sequentially comprises a bonding layer coated on the surface of the inner wall of a steel chimney, a shrinking structural layer adhered to the bonding layer and a top coating coated to the surface of the shrinking structure layer from outside to inside; and the shrinking structure layer having strong stretchability is adopted in the anticorrosive structure to offset thermalexpansion stress, and aromatic polyimide resin having the good high-temperature resistance is adopted as the top coating to improve the high-temperature anti-corrosion performance of an existing chimney coating. The structure and construction are simple, forming is easy, the structure is firm, the service life of the anticorrosive structure can be prolonged, and the replacement cycle is shortened; and epoxy resin powder in a mixture of the shrinking structure layer is used as a powder connecting agent, liquid phenolic resin is used as a co-curing agent, the shrinking structure layer and the epoxy bonding agent are tightly combined through the epoxy resin powder and the liquid phenolic resin, polyimide powder enables the shrinking structure layer and the aromatic polyimide resin to be tightly combined, and the anticorrosive structure is more stable. .

Description

technical field [0001] The invention relates to the technical field of chimney anticorrosion, in particular to a steel chimney inner wall anticorrosion structure and a construction method thereof. Background technique [0002] At present, the anti-corrosion of the inner wall of the steel chimney after wet desulfurization mainly has three types. The first type is to use corrosion-resistant light-weight heat insulation products to paste the inner wall of the steel to isolate the contact between the flue gas and the inner wall of the steel, such as foamed glass bricks, but domestically produced ones Foam glass bricks have the defects of low density, easy penetration, poor acid and corrosion resistance, and poor temperature resistance, and the adhesive used to bond foam glass bricks will soften and deform at about 150°C, and the foam glass bricks are easy to separate from the adhesive, resulting in large areas. and because the strength and density of foamed glass bricks and adhe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/64
CPCE04B1/642E04H12/02E04H12/08F23J13/02
Inventor 王泳张铃鑫顾祥
Owner 成都云白环境设备制造有限公司
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