Removal of hydrogen chloride from flue gases with calcined limestone particles in a fixed bed reactor

Abstract

The sorption of hydrogen chloride gas (HCl) on fully calcined commercial limestone particles was experimentally investigated using a fixed bed reactor at temperatures between 400-650 degreesC. The gas phase was a mixture of HCl and N-2 with an inlet HCl concentration of 0.5% mol. The limestone particles were diluted in inert mullite beads to obtain a proper gas-solid contact. The experimental results showed that the conversion of solids increased with increasing temperature. Also HCl removal efficiency increased with increase in temperature and limestone quantity in the bed.