Preparation method for anticorrosion FRP lining of wet desulphurization chimney

Abstract

The invention relates to a preparation method for anticorrosion FRP lining of a wet desulphurization chimney. A carbon fiber and glass fiber mixing needled mat is included and is characterized in that adhesive layers are arranged on the upper surface and the lower surface of the carbon fiber and glass fiber mixing needled mat respectively, and flame-retarding wear-resistant layers are arranged on the surfaces of the adhesive layers. The thickness of the carbon fiber and glass fiber mixing needled mat ranges from 6.2 millimeters to 15.0 millimeters, and the gram weight of the carbon fiber and glass fiber mixing needled mat is 2, 000 g / m<2>. The thickness of each adhesive layer ranges from 1.2 millimeters to 2.0 millimeters. The thickness of each flame-retarding wear-resistant layer ranges from 2.5 millimeters to 3.0 millimeters. A product prepared with the preparation method has the beneficial effects of being better in corrosion resistance and flame retardance, longer in service life, moderate in cost, short in construction period and the like.

Description

technical field [0001] The invention relates to an anti-corrosion inner lining material, in particular to a preparation method for an anti-corrosion FRP inner lining of a wet desulfurization chimney. Background technique [0002] After wet desulfurization is adopted in coal-fired power plants, the wet flue gas will condense in the chimney to form condensed acid, which will be highly corrosive to the chimney. At present, spraying, tiling and titanium alloy inner cylinders are widely used in China, and acid-resistant bricks are used. Prone to cracking, falling off, or acid leakage, sleeve chimneys with titanium-steel clad plates or nickel-based alloy clad plates work well, but are expensive. Contents of the invention [0003] In view of the above problems, the present invention provides a preparation method of anti-corrosion FRP lining for wet desulfurization chimneys. The products prepared by this method have better corrosion resistance, good flame retardancy, longer servic...

AI Technical Summary

Problems solved by technology

[0002] After coal-fired power plants adopt wet desulfurization, the wet flue gas will condense in the chimney to form condensed acid, which will be highly corrosive to the chimney. At present, spraying, tiling and titanium alloy inner cylinders are generally used in China, and acid-resistant bricks are used. Prone to cracking, falling off or acid leakage, telescopic chimneys with titanium-steel clad panels or nickel-based alloy clad panels perform well, but are more expensive

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