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Dew point corrosion resistant composition, hot working equipment, and preparation method of dew point corrosion resistant coating

A dew point corrosion and composition technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as dew point corrosion of thermal power equipment, and achieve the effects of high construction efficiency, high elasticity and strong adhesion

Inactive Publication Date: 2017-02-15
BEIJING BSS CORROSION PROTECTION IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a preparation method of an anti-dew point corrosion composition, thermal power equipment and anti-dew point corrosion coating, so as to solve the dew point corrosion problem of petrochemical thermal power equipment in the prior art

Method used

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  • Dew point corrosion resistant composition, hot working equipment, and preparation method of dew point corrosion resistant coating
  • Dew point corrosion resistant composition, hot working equipment, and preparation method of dew point corrosion resistant coating

Examples

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Effect test

Embodiment 1 to 8 and comparative example 1 to 2

[0041] The composition of the anti-dew point corrosion composition is shown in Table 1

[0042] Fully mix the components of component A according to the proportion, disperse and grind into a uniform paste, and mix component A and component B before construction to obtain the anti-dew point corrosion coating corresponding to the embodiment.

[0043] The anti-dew point corrosion coatings of each embodiment were applied to the furnace body of the tubular heating furnace by scraping, so that the film thickness was between 1 and 2 mm.

[0044] Table 1

[0045]

[0046]

[0047] As can be seen from the data in Table 1, the coating formed by the anti-dew point corrosion composition of the present application can effectively improve the corrosion resistance of the dew point, and at 100°C, it can respectively resist 5% sulfuric acid, 5% hydrochloric acid, It is resistant to 5% nitric acid for more than 30 days. At the same time, the elasticity of the coating film does not change...

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Abstract

The invention provides a dew point corrosion resistant composition, hot working equipment, and a preparation method of a dew point corrosion resistant coating. The dew point corrosion resistant coating comprises, by weight, 50 to 85 parts of a resin, 20 to 40 parts of a pigment filler, and 0 to 5 parts of an accessory ingredient; wherein the resin comprises petroleum resin and silicone rubber. The dew point corrosion resistant composition is high in adhesive force and elasticity, and is capable of avoiding shedding of the dew point corrosion resistant coating in base material cold and hot alternation process. The viscosity of silicone rubber is relatively high, so that petroleum resin is added so as to realize effective dispersing of the pigment filler; the dew point corrosion resistant coating contains silicone rubber, so that cracking or liquidation of the dew point corrosion resistant coating is not caused at -25 to 230 DEG C, and the elasticity is maintained; at 100 DEG C, the dew point corrosion resistant coating is capable of resisting 5% sulfuric acid, 5% hydrochloric acid, and 5% nitric acid for 30 days; the dew point corrosion resistant coating is high in solid content, and is capable of maintaining elasticity for a long term; in construction, one time film forming thickness is high, curing is rapid, and construction efficiency is high.

Description

technical field [0001] The invention relates to the field of anti-corrosion materials, in particular to an anti-dew point corrosion composition, thermal equipment and a preparation method for an anti-dew point corrosion coating. Background technique [0002] Most of the traditional tubular heating furnaces are composed of brick structure or refractory concrete structure. The furnace lining of this structure is heavy and has high thermal conductivity, so the thermal efficiency of the furnace itself is low, the energy consumption is large, and the construction is troublesome. In recent years, in oil refining and chemical equipment, a considerable part of the furnace lining of the heating furnace adopts a refractory brick structure and a full ceramic fiber structure with a low-density insulation block as the back layer. Although this structure has been greatly improved in terms of energy saving, it has the problem of dew point corrosion, namely: containing SO 2 The flue gas in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D157/02C09D7/12C09D5/08
CPCC09D5/084C09D183/04C08L57/02C08K13/04C08K7/28C08K2003/328C08K2003/327C08K2003/2227C08K3/36C08K2003/2241C08K3/34C08K2003/3045
Inventor 赵金庆谢静李依璇赖广森樊燕达田东波霍震友何永敬张丽
Owner BEIJING BSS CORROSION PROTECTION IND
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