Anticorrosive coating used on inner wall of desulfurization and denitrification device and preparation method thereof

A technology for desulfurization, denitrification, and anti-corrosion coatings, applied in the field of coatings, can solve the problems of no anti-corrosion coatings, smoke and dust erosion and wear, achieve good penetration resistance, improve corrosion resistance, and solve high-temperature corrosion and serious effects of smoke and dust erosion and wear

Active Publication Date: 2015-11-25
江苏云湖新材料科技有限公司
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, flue gas desulfurization equipment in power plants (FlueGasDesulfurization referred to as "FGD") suffers from high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anticorrosive coating used on inner wall of desulfurization and denitrification device and preparation method thereof
  • Anticorrosive coating used on inner wall of desulfurization and denitrification device and preparation method thereof
  • Anticorrosive coating used on inner wall of desulfurization and denitrification device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0033] Embodiments 1 to 3: The preparation method of the anti-corrosion coating for the inner wall of the desulfurization and denitrification device provided by the present invention, the specific steps are as follows:

[0034] 1. Preparation of main paint component A:

[0035] (1) Take by weighing 1# solvent, epoxy resin, phenolic resin, drop in the reactor, start mixer, control rotating speed at 400 rpm;

[0036] (2) Add dispersant, carbon black, and nano-silica in turn, and stir for 20 minutes at a speed of 600 rpm. After stirring evenly, grind to a fineness below 25um;

[0037] (3) Stir the milled paint slurry at a speed of 600 rpm for 20 minutes, add defoamer and leveling agent under stirring, and after stirring evenly, add diatomite, glass powder, ceramic micropowder, sulfuric acid in turn Barium, antirust agent, graphene microflake powder, activated carbon, keep stirring at a speed of 9000 rpm for about 30 minutes until there are no obvious particles;

[0038] 2. Prep...

Embodiment 4

[0043] Embodiment 4: The preparation method of the anti-corrosion coating for the inner wall of the desulfurization and denitrification device provided by the present invention, its specific steps are as follows:

[0044] 1. Preparation of main paint component A:

[0045] (1) take by weighing 1# solvent, epoxy resin, phenolic resin, drop in the reactor, start mixer, control rotating speed at 500 rpm;

[0046] (2) Then add dispersant, carbon black, and nano-silica in sequence, and stir at a speed of 800 rpm for 15 to 30 minutes. After stirring evenly, grind to a fineness below 25um;

[0047] (3) Stir the milled paint slurry at a speed of 800 rpm for 15 minutes, add defoamer and leveling agent under stirring, and after stirring evenly, add diatomite, glass powder, ceramic micropowder, sulfuric acid in turn Barium, antirust agent, graphene microflake powder, activated carbon, keep stirring at 1000 rpm for about 20 minutes until there are no obvious particles;

[0048] 2. Prepar...

Embodiment 5

[0053] Embodiment 5: The preparation method of the anti-corrosion coating for the inner wall of the desulfurization and denitrification device provided by the present invention, its specific steps are as follows:

[0054] 1. Preparation of main paint component A:

[0055] (1) take by weighing 1# solvent, epoxy resin, phenolic resin, drop in the reactor, start mixer, control rotating speed at 300 rpm;

[0056] (2) Add dispersant, carbon black, and nano-silica in turn, and stir for 30 minutes at a speed of 500 rpm. After stirring evenly, grind to a fineness below 25um;

[0057] (3) Stir the milled paint slurry at a speed of 500 rpm for 30 minutes, add defoamer and leveling agent under stirring, and after stirring evenly, add diatomite, glass powder, ceramic micropowder, sulfuric acid in turn Barium, antirust agent, graphene microflake powder, activated carbon, keep stirring at 800 rpm for about 40 minutes until there are no obvious particles;

[0058] 2. Preparation of curing ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

An anticorrosive coating used on the inner wall of a desulfurization and denitrification device comprises a main paint component A and a curing agent component B. The main paint component A comprises, by weight, epoxy resin, phenolic resin, nano-silicon dioxide, diatomite, ceramic micro-powder, glass powder, carbon black, a dispersing agent, a flatting agent, a defoaming agent, barium sulfate, an antirust agent, a 1# solvent, graphene nano-platelet powder and activated carbon. The curing agent component B comprises, by weight, a modified amine hardener and a 2# solvent. The weight ratio of the component A to the component B is 3.5-4.5:1. The anticorrosive coating is used for corrosion prevention of the inner wall of a dust remover of the desulfurization and denitrification device, is convenient to apply, corrosion of highly corrosive flue gas (such as SO<2>, NO<x>, HF and HCl) to the steel inner wall is effectively prevented, corrosion of highly corrosive liquid (such as H<2>SO<4>, HCl and HF) is effectively prevented, and meanwhile a paint film formed by the anticorrosive coating has very high abrasion resistance, temperature endurance and cold and hot shock resistance.

Description

technical field [0001] The present application relates to the technical field of coatings, in particular to an anti-corrosion coating used for the inner wall of a desulfurization and denitrification device and a preparation method thereof. Background technique [0002] The flue gas of desulfurization tower in thermal power plant contains SO 2 , NO x , HF, HCl and other gases, and after the wet limestone washing method is used for desulfurization, the washing liquid of the desulfurization system contains H 2 SO 4 , HCl, HF and other strong corrosive substance solutions, and in a low temperature, high humidity environment, further intensifies the corrosion of the desulfurization tower device. [0003] The inlet temperature of the flue gas absorption tower can be as high as 160°C to 180°C, and there is a certain dry and wet interface; the flue gas temperature at the outlet of the absorption tower is relatively low, about 45°C to 55°C, below the dew point. Therefore, the wet...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09D163/00C09D161/06C09D7/12C09D5/08
Inventor 刘嘉东徐善林
Owner 江苏云湖新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap