| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably mix waste gas and control operation even at partially treating desulfurizing condition. SOLUTION: In the device, a by-pass flow passage 10 passing the by-pass gas detouring an adsorption column 5 is provided, and the by-pass flow passage 10 is branched, and one flow passage 12 of the branched flow passage is connected to a mixing vessel 11 disposed at a waste gas flow passage at the downstream side of the absorption column 5, and the other flow passage 14 is connected to a waste gas flow passage at the downstream side of the mixing vessel 11, and a dumper 13 for switching the flow passage is provided at the branched flow passage. In the case then the sulfur oxide in the waste gas discharged from a combustion device such as boiler is absorbed and removed by using the adsorption column 5, the dumpier 13 for switching the flow passage is closed and the waste gas is passed through both of the absorption column 5 and the mixing vessel 11, and in the case when the absorption column 5 is not operated, the dumper 13 is opened, and whole waste gas is passed through the by-pass flow passage 10 and allowed to flow by passing through the branched by-pass flow passage 12, the mixing vessel 11 and a branched by-pass flow passage 14.</p> |
