Mitigating the emissions of acid pollutants from dry blast furnace gas cleaning plants

Given the improved operational economics and, in some areas, the physical or economic scarcity of water, steel producers are shifting towards the application of blast furnace gas cleaning systems, in which the wet scrubber has been replaced with a second, dry gas treatment stage. While in traditional systems, acid pollutants leave the system with the scrubbing water, dry gas cleaning systems need to incorporate additional measures such as absorbent injection to eliminate acid compounds…