WET TYPE FLUE GAS DESULFURIZATION FACILITY

摘要

PROBLEM TO BE SOLVED: To lower the height of a gas inlet duct without increasing deviation of gas flow in an absorption tower by making the shape of the gas inlet duct flat and specifying the opening ratio of the gas inlet duct. SOLUTION: A wet type flue gas desulfurization apparatus is provided with an absorption tower 1 in which exhaust gas exhausted from a combustion apparatus such as a boiler is introduced from a gas inlet duct 2 arranged on the side face of a cylindrical tower in which a gas-liq. contacting means exists and sulfur oxides in the exhaust gas are processed by bringing the exhaust gas into contact with an absorbing soln. being sprayed from a spray nozzle while the exhaust gas is made to flow upward. In this case, when a gas inlet duct flat ratio expressing the ratio of the height 11 of the gas inlet duct to the width 12 of the gas inlet duct is X and the gas inlet duct opening ratio expressing the ratio of the width 12 of the gas inlet duct to the tower diameter 13 of the absorption tower 1 is Y, the gas inlet duct opening ratio Y is set to be at least the value Y expressed by a relation of Y=0.672X<-0.152> .