Method for removing acidic gases from waste gas
First Claim
1. A method for simultaneously removing acidic gases of sulfur and nitrogen oxides from waste gas before it is emitted to the atmosphere by contacting said waste gas with a scrubbing agent comprising an emulsion of water in organic sulfoxides in the presence of a stream of air or of ozonated air.
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Abstract
A method for removing acidic gases from waste gases is disclosed. The invention relates to a method for removing acid gases, in particular from SO2 and NOx, by contacting the waste gas with an emulsion of water in organic sulfoxides, in particular of water in oil-derived-sulfoxides. The organic sulfoxide phase can be regenerated after the emulsion is loaded with polluants, by letting the emulsion to settle down and separate into two phases. The aqueous phase obtained after the separation contains sulfate and nitrate ions which can be collected and used as valuable chemicals.
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Citations
14 Claims
- 1. A method for simultaneously removing acidic gases of sulfur and nitrogen oxides from waste gas before it is emitted to the atmosphere by contacting said waste gas with a scrubbing agent comprising an emulsion of water in organic sulfoxides in the presence of a stream of air or of ozonated air.
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