Status of Sintering FGD Technology and Development Trend

SO2 produced in sintering course accounts for a half of total amount of SO2 produced by iron and steel complex. Of course, it must be the keystone of SO2 control in iron and steel complex. A lot of sintering desulphurization demonstration projects had been set up in our country and good result of desulphurization had been gained. Under the precondition of sintering flue gas, the paper explains the excellence and shortcomings of several desulphurization technologies adopted in our country at present time, compares the advantages and disadvantages of dry tower FGD, lime milk desulphurization, limestonegypsum process of desulphurization, ammonia process of desulphurization, circulating fluidized bed desulphurization, active carbon desulphurization, double alkali process of desulphurization, and provides guidance for selection of sintering flue gas desulphurization technology.