Method of removing SO.sub.2, NO.sub.X and particles from gas mixtures using streamer corona
AssigneeFlorida State University
InventorsAkira Mizuno, Judson S. Clements
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Abstract
A method for converting sulfur dioxide and/or nitrogen oxide gases to acid mist and or particle aerosols is disclosed in which the gases are passed through a streamer corona discharge zone having electrodes of a wire-cylinder or wire-plate geometry.
Claims49
A method for converting sulfur dioxide and/or nitrogen oxides in a mixture thereof with at least one other gas to separable forms comprising:
- passing said mixture of gass through a streamer corona discharge zone defined by spaced electrodes;
- periodically dissipating in said zone pulses of electrical power of sufficiently high voltage to establish therein a continuous pulsed streamer corona discharge whereby the sulfur dioxide and/or nitrogen oxides are converted to acid mist and/or particle aerosols;
- the improvement comprising establishing a streamer corona discharge by applying fast-rising narrow pulses in a zone defined by electrodes spaced in a wire-cylinder or wire-plate geometry.
A method for converting sulfur dioxide and/or nitrogen oxides and/or particulate matter in a mixture thereof with at least one other gas to separable forms comprising:
- passing said mixture of gases and/or particulate matter through a streamer corona discharge zone defined by discharge and collector electrodes spaced in a geometry comprising wire-cylinder or wire-plate, respectively;
- (1) periodically dissipating in said zone pulses of electrical power of sufficiently high voltage to establish therein a continuous pulsed streamer corona discharge and (2) establishing in the zone a high voltage bias potential;
- whereby the sulfur dioxide and/or nitrogen oxide are converted to acid mist and/or particle aerosols;
- and the aerosols and/or particulate matter is electrically charged and driven to and collected on the collection electrode.
The method of claim 49 wherein said particulate matter is lime (CaO) or limestone (CaCO.sub.3).
Dependencies are inferred from the claim text.