METHOD AND APPARATUS FOR WET DESULFURIZATION OF EXHAUT GAS

摘要

PURPOSE:To provide a method and an apparatus for desulfurization of an exhaust gas wherein the exhaust gas flow is equalized in an absorption tower without producing a large increase in pressure loss and desulfurization performance is improved. CONSTITUTION:An exhaust gas flow path being located on the downstream of an exhaust gas inlet 3 provided on the side wall of an absorption tower 1 and on the upstream region of a gas absorption part 10 is divided into a number of small flow paths 26 by means of flow path dividing members 21 and an auxiliary nozzle 24 is provided on each of these small flow paths and an absorption liq. is fed into the auxiliary nozzle 24 through an auxiliary nozzle pipe 22 being branched from an absorption liq. circulation system and a flow adjusting valve 23 and is sprayed. The exhaust gas flow rate passing through each small flow path is adjusted and equalized by adjusting the amt. of spray and the flow rate distribution of the exhaust gas flowing in the absorption part 10 is equalized. It is possible thereby to prevent the exhaust gas flow from being biased in the absorption part 10 in the absorption tower without increasing pressure loss caused by passing of the exhaust gas and to improve desulfurization performance.