| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flue gas desulfurization device constituted in such a manner that ammonium sulfate generated when desulfurization is performed by injecting ammonium into a flue gas, can be economically recovered. SOLUTION: Ammonia is injected from an ammonia tank 4 into a combustion flue gas passing through an air preheater 2 originating from a boiler 1, and is guided to an ammonium sulfate recovery tower 3. Most if soot and dust and ammonium sulfate are removed in the ammonium sulfate recovery tower 3, and the flue gas is guided to a absorption tower 5 for a lime/gypsum process desulfurization device to remove SO2 .</p> |
