Vinyl Ester Glass Flake Coatings for FGD System

Corrosion issues in Power Plants Flue Gas Desulphurisation Unit

FGD removes Sulphur Dioxide and Inorganic Acids from the exhaust flue gases emitted by conventional fossil-fuel power plants in a Scrubber using a slurry of lime and water. The Sulphur Dioxide reacts with the lime slurry to produce Calcium Sulphate, commonly known as Gypsum, and the clean flue gas is released through the chimney. The internal surfaces of the Scrubber Units are exposed to the highly corrosive environment created by the process including high humidity, elevated temperatures, acidity, chlorides, and chemical and physical abrasion.

Kirloskar Corrocoat Coatings Solution

Moist and corrosive flue gas generated in scrubbing process will hamper Scrubber, Ducts, Tanks, and chimney metallic flue canes, hence protecting them will require high performance coating/ barrier layer, for this we propose coatings which can withstand dynamics of Chemical and Temperature variations inside the Absorber, Ducts, GGH, Recirculation Tanks, Chimneys etc. The coating solution to protect against these conditions should have the combination of chemical, abrasion, Temperature, and permeation resistance.

Kirloskar Corrocoat use vinyl ester glass flake coatings including Polyglass VEF, Polyglass VEF WR (an erosion resistant topcoat) and Corrothane XT as permeation-resistant coatings to protect various metal and concrete Equipments of FGD in power plants. Vinyl ester glass flake coating have significant advantages over other linings, especially their permeation resistance.