Nature protection technologies

1.3.2.1. Dry limestone technology

Part 1. AIR PROTECTION FROM POWER INDUSTRY EMISSIONS

1.3. Sulfur oxide emission reduction

1.3.2. Technologies of sulfur oxide emission reduction

1.3.2.1. Dry limestone technology

Shmigol I.N., Open JSC “VTI”

Dry limestone technology is based on burning of the finely crushed limestone in furnace at the temperature of 1000 ... 1100°C until lime is formed with its following reaction with sulfur dioxide. The main chemical reactions of this technology are as follows:

СаСO3 + Q —> СаО + СO2­;

СаО + SO2 + 1/2O2 = CaSO4.