Fly Ash Case Study
Fly ash, a coal combustion product consisting fine particles is a residual, waste matter arising from the combustion of coal from boilers used for the steam generation power plant at GHCL. Its disposal at GHCL has become a huge problem. The study aims at understanding the characteristics of the generated fly ash in detail and will investigate about finding innovative, possible solution for addressing the fly ash disposal problem at GHCL.
Gujarat Heavy Chemicals Ltd. (GHCL) was establish in March 1988, by investment of $220 million at Sutrapada, Gujarat. The plant manufactures high-grade dense & light soda ash, for domestic and international use. GHCL is distinguished by its growth, financial performance and outstanding people and processes.
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After that it goes in to the economiser where bottom ash is separated out at the bottom part of economiser. After that it will pass through air preheater where air is provide for the coal down the temperature of gas-fly ash mixture and at last it will pass through electrostatic precipitator or bag house where impurities will separated out based on principle of Anion- Cation and rest of the ash is collect at bottom part of the bag house and gases goes in to the stack where gases is liberated directly in to the atmosphere and we get 70-90 % fly ash as a …show more content…
From this paper we get a idea about use of fly ash in the adsorbent use and for that some basic characteristics like unburnt carbon substances, alumina & silica content are the basic responsible. At the end of experiment conclusion is percentage of color removed increase with quantity of absorbent and contact time increase while percentage of color removal is decrease with increase in concentration and PH values and temperature of dye.
From this paper we come to know about the use of fly ash in absorbsion for phosphate removal. To use for phosphate removal fly ash have high concentration of calcium and we come to know about the discharge limits for phosphate content till 0.5-1 mg/L. The advantage for using fly ash as absorbent instead of lime is that it does not produce any excess chemical
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