Flue Gas Desulphurization: Limestone Availability and Gypsum Use

March 26, 2020

Alarge number of India’s coal-based thermal power plants are set to install flue gas desulphurisation (FGD) systems by 2022 in order to meet new emission norms announced by the government in 2015. Limestone is a key raw material in most FGD systems installed to control sulphur dioxide (SO2) emissions. This report attempts to address the availability of limestone for FGD and also the use of its by-product, FGD gypsum.