| 摘要 |
<p>PURPOSE:To improve an efficiency of desulfurization of discharging combustion gas by a method wherein the sulfide generated in the secondary combustion chamber is made to a carbonate by a carbonating device and H2S generated in the carbonating device is recovered by a Clous furnace. CONSTITUTION:A furnace is composed of a primary combustion chamber 1, a secondary combustion chamber 4 and a third combustion chamber 8. Combustion gas 13 passed through a secondary processing device 11 for discharging gas is discharged to the surrounding air 14. A carbonating device 15 for recovering sulfide 16 generated by the carbonate 7 in the secondary combustion chamber 4 to the carbonate 7 takes the ash 17 from the sulfide 16 and then produces H2S 18 in the interior thereof. In the Clous furnace 19 into which H2S 18 generated in the carbonating device 15 is introduced and O2 20 is supplied to recover the simple substance of sulfur 21 and the carbonate 7, the carbonate 7 is circulated to the secondary combustion chamber 4. Thereby, it is possible to improve an efficiency of desulfurization of the combustion discharging gas and at the same time to reuse the desulfurization agent.</p> |
