Method and device for purifying the flue gases of a sintering process of ores and/or other material-containing materials in metal production

摘要

A method for purifying waste gases of an at least partially burnt solid fuel to reduce pollutants such as SO_x and/or HCl and NO_x. The waste gas flows into a moving bed reactor from below through a lower and upper layer of an adsorption and/or absorption agent already polluted with NO_x, SO_x and/or HCl. SO_x and/or HCl components are adsorbed from the waste gas into the NO_x loaded adsorption and/or absorption agent. Thereafter, the waste gas is mixed with an ammonium-containing compound and flows through an upper horizontal gas inflow and bulk material removal tray of the moving bed reactor into the upper layer of the adsorption and/or absorption agent already polluted with NO_x and small quantities of SO_x and/or HCl. During the throughflow of the upper layer, NO_x components are adsorbed from the waste gas onto the adsorption/absorption agent.