Desulfurization and denitrification of electric power

Product Process

DLWS desulfurization: The process uses limestone slurry as a washing absorbent, and the entire desulfurization process is divided into two stages, namely the upper loop and the lower loop. The two stages are combined in one absorption tower. Limestone slurry can be introduced into the upper loop separately, and the flue gas enters the lower loop of the absorption tower along the tangent direction and is cooled to the flue gas pipeline temperature. At the same time, part of the SO2 is absorbed by the limestone to generate the absorption tower (CaSO4·2H2O). The cooled flue gas enters the spray area of ​​the upper loop of the absorption tower, and after sufficient washing, the absorption rate of SO2 is reached, and SO2 is converted into calcium sulfite. After air oxidation, the final absorption product is calcium sulfate crystal (gypsum) slurry with a solid content of 15%. After that, it can be formed into gypsum or waste gypsum type according to application requirements.

SDA desulfurization: The SDA desulfurization process uses Ca(OH)2 slurry as the desulfurization absorbent, and the absorbent is atomized in the spray drying absorber through a centrifugal disc atomizer or a nozzle atomizer.

LIFAC desulfurization: LIFAC dry flue gas desulfurization uses process limestone powder as SO2 absorbent. Its desulfurization process is divided into in-furnace desulfurization and in-production activator desulfurization.

SCR denitrification: The SCR device consists of a denitrification reactant preparation system and a reactor body. By spraying the denitrification reactant NH3 into the reactor, NOx is converted to nitrogen. Since this reaction reduction is sensitive to temperature, a catalyst needs to be added, otherwise the temperature requirement of the reaction will increase the reaction activity.