| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily obtain the water balance in a desulfurizing apparatus for exhaust gas from a sintering machine generated with addition of crystal water content accompanied with the rising of blending ratio of high crystal water-containing ore and to secure the stable operation. SOLUTION: The apparatus provided with a cooling liquid circulating mechanism 5 as an SOx absorbing device 2, an ammonium sulfite absorbing liquid circulating mechanism 6 returning back the ammonium sulfite absorbing liquid in the circulating system of the SOx absorbing device and of an ammonium absorbing device 3 and a dilute SOx liquid circulating mechanism 7 washing the exhaust gas with water before introducing the exhaust gas from the sintering machine into a wet type EP 21, is used. Then, the added crystal water is recovered from the excess water cleaned with the wet type EP as the supplying water source into the dilute SOx liquid circulating course, and from the liquid dividedly discharged on the way of the ammonium sulfite absorbing liquid circulating route and on the way of the cooling liquid circulating route, and a part thereof is extracted and injected from a blast furnace tuyere 9 as the water for adjusting the moisture into a blast furnace. Even in the case of being of the high blending ratio of the high crystal water-containing ore, lime or industrial water in the sintering raw material and the industrial water for adjusting the moisture in the blast furnace are saved without reinforcing the desulfurizing apparatus, and the producing operation of the sintered ore is stabilized.</p> |
