FINISHING FLUE GAS DESULFURIZATION APPARATUS AND EXHAUST GAS TREATMENT SYSTEM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a simple finishing flue gas desulfurization apparatus and an exhaust gas treatment system using the same.

SOLUTION: The finishing flue gas desulfurization apparatus, which removes sulfur oxides from combustion exhaust gas beforehand by means of an existing desulfurization device thereafter further removing the remaining sulfur oxides to the extremely low concentration, includes a gas inlet part 12 which introduces combustion exhaust gas (exhaust gas) 11 including a trace quantity of sulfur oxides. It also includes: a desulfurization device body 15 provided with a finishing desulfurization part 14 which desulfurizes by bringing an absorbing solution 13 into contact with the sulfur oxides in the introduced combustion exhaust gas 11; a wet type electric dust collection part 16 which is provided at the rear-flow side of the finishing desulfurization part 14 in the finishing desulfurization device body 15 and removes soot and dust in the combustion exhaust gas after finishing desulfurization; a cooling part 17 which is provided at either front or rear of the wet type electric dust collection part 16 and cools the combustion exhaust gas; and a gas discharge part 19 which discharges the purifying combustion exhaust gas (purifying gas) 18 to the outside after dust removal and cooling.

COPYRIGHT: (C)2011,JPO&INPIT