Heavy-duty anticorrosive coating for flue gas desulphurization equipment and preparation technology thereof

Abstract

The invention discloses a heavy-duty anticorrosive coating for flue gas desulphurization equipment and a preparation technology thereof. The heavy-duty anticorrosive coating comprises components of a novolac epoxy vinyl ester resin, a plasticizer, a diluent, a curing agent, a promoter, glass flakes, rutile titanium dioxide, nano-silica, alumina powder, silicon carbide, talcum powder and auxiliary agents. The preparation technology comprises that the components are dispersed by a high-speed dispersion kettle and then are mixed into the heavy-duty anticorrosive coating. The heavy-duty anticorrosive coating is convenient for construction, can be cured at a normal temperature, has good mechanical properties and excellent anti-permeability performances, is stable in an acid medium for a long time and has good protection effects on a matrix material.

Description

technical field [0001] The invention relates to a heavy-duty anti-corrosion coating for flue gas desulfurization equipment and a preparation process. Background technique [0002] my country is a country whose energy structure is dominated by coal. Dust, sulfur dioxide and nitrogen oxides are the main pollutants in the atmosphere of our country. Due to the characteristics of my country's energy structure, it leads to environmental pollution of acid rain and more corrosion. At present, flue gas desulfurization is an effective means of preventing and controlling sulfur dioxide or nitrogen oxides at home and abroad. The wet limestone washing method is the most widely used and mature process in flue gas desulfurization technology in various countries in the world. During the wet desulfurization process, the SO in the flue gas 2 , SO 3 , HF, NO x , HCl or other harmful chemical components meet some chemical media at high temperature and react chemically to generate dilute ...

AI Technical Summary

Problems solved by technology

In the production route of sulfuric acid by wet contact method, H 2 S acid gas contains NO X , O 2 , SO 2 , SO 3 And water vapor, etc., are prone to wear and corrosion at high flow rates; dew point corrosion is prone to occur in the low temperature part of the pipeline; the gas after the converter already contains a large amount of acid mist, and is also prone to dew point corrosion, so it has a great impact on production and shutdown time. , income, equipment depreciation expenses, potential safety hazards and potential environmental impacts

Research and selection of new materials resistant to acid corrosion is an important method to prevent high-temperature sulfuric acid corrosion, but at the same time, the high cost and construction conditions of new materials limit their application

Images