A kind of anticorrosion material used for exhaust gas desulfurization chimney

Abstract

The invention discloses an anticorrosive material for a smoke discharge and desulfurizing chimney, which comprises an anti-permeability material and an abrasion-resistant material, wherein the anti-permeability material mainly comprises EpigenXD modified epoxy resin added with glass flakes, and the abrasion-resistant material mainly comprises the EpigenXD modified epoxy resin added with abrasion-resistant white corundum filler particles. The abrasion-resistant white corundum filler particles are divided into fillers I and fillers II, and the fillers I and the fillers II are mixed according to a certain proportion. The anticorrosive material for the smoke discharge and desulfurizing chimney is small in construction difficulty, low in cost, good in anticorrosive effect, good in abrasion-resistant performance, capable of effectively preventing damage of external force and internal stress and resisting to corrosion of acid liquor or scour of smoke and convenient in use and maintenance. In addition, scour and abrasion damage which easily happen to the anticorrosive material of the smoke discharge and desulfurizing chimney are effectively avoided, service life of an anticorrosive layer is prolonged, and maintenance cost can be reduced to a large extent.

Description

technical field [0001] The invention relates to the field of industrial anticorrosion materials, in particular to an anticorrosion material used for exhaust gas desulfurization chimneys. Background technique [0002] With the implementation of the national energy-saving and emission reduction strategic goals, thermal power plants or heating boilers need to carry out flue gas desulfurization and purification. After desulfurization, the corrosiveness of the internal environment of the chimney increases. Domestic chimneys that have been anti-corrosion after desulfurization have an anti-corrosion effect. It is not ideal, and the main problems are: cracking, leakage, peeling, etc. Most of the parts appear in seams, dust accumulation platforms, corbels, high-speed airflow areas, etc. [0003] In the desulfurization system, the flue gas treatment system (absorption tower, etc.), the flue gas transmission and discharge system (flue), and the chimney must all be treated with anticorr...

AI Technical Summary

Problems solved by technology

[0002] With the implementation of the national energy-saving and emission reduction strategic goals, thermal power plants or heating boilers need to carry out flue gas desulfurization and purification. After desulfurization, the corrosiveness of the internal environment of the chimney increases. Domestic chimneys that have been anti-corrosion after desulfurization have an anti-corrosion effect. Not ideal, the main problems are: cracking, leakage, peeling, etc. Most of the parts appear in seams, dust accumulation platforms, corbels, high-speed airflow areas, etc.

[0006] Another solution is to use APC hybrid polymer as the anti-corrosion protection layer. Its construction is relatively simple, but it has the disadvantage of poor performance. APC hybrid polymer has a certain anti-corrosion effect, but the wear resistance is not good. High brittleness, poor resistance to cold and heat alternating impact

[0007] Another solution is to use alloy materials, but alloy materials are very expensive, and it is difficult to process them twice, so it is not easy to promote

For example, titanium steel plate can meet the anti-corrosion needs of chimneys from a technical point of view, but the disadvantage is that the cost is high

[0008] The main problem of the damage caused by corrosion of the chimney is that the design of the anti-corrosion structure cannot meet the characteristics of the flue gas operation of the chimney.