The forced oxidation system of lime stone/gypsum wet FGD equipment is an importa nt system of the said FGD equipment. The insufficient oxidation effectiveness of said system not only produces impact to the purity of gypsum and safe operation of the dewater

but also discharges gypsum slurry being not up to standard into the ash pond in serious situation. During the course of debugging and trial operation of the FGD system at Chongqing Power Plant

problems of not good oxidation effectiveness had many times occurred due to defects in the design

influencing seriously the normal debugging and operation of the FGD system. Through analysis of factors producing impact to the oxidation effectiveness

corresponding improvement measures have been put forward and having proved the reasonableness and correctness of the said measures by the test data obtained. The operation performance after improvement shows the oxidation capability has obviouly been enhanced.