DEVICE AND METHOD FOR FLUE GAS DESULFURIZATION AND CONSUMPTION REDUCTION IN HEAT-ENGINE PLANT

摘要

Disclosed are a device and method for flue gas desulfurization and consumption reduction in a heat-engine plant. The device comprises: a demister (1), a cooling spray layer (2), a seriflux spray layer (3), a desulfurizing tower (4), a flue gas purifying passage (5), a desulfurization circulating pump (6), a seriflux heat exchanger (7), a cooled seriflux circulating pump (8), a flow rate control pump (9) and a calcium hydroxide seriflux pond (10). The method comprises the following steps: flue gas enters a desulfurizing tower (4) for primary desulfurization by limestone seriflux; flue gas undergoes secondary desulfurization by calcium hydroxide seriflux; flue gas undergoes cooling, demisting and heating; and, standard gas is discharged.