Removal of atmospheric pollutants from gas, related apparatus, processes and uses thereof
AssigneeIntelligent Abatement, LLC
InventorsRoger Glenn Miller, Larry Kent Barnthouse, Robert George Richardson
Life of this patent
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Abstract
Methods related generally to the removal of atmospheric pollutants from the gas phase, are provided. The methods involve contacting a first stream comprising NO and/or NO2 with a second stream comprising (ClO2)0 to provide a third stream comprising NO and NO2 at a molar ratio of about 1:1; and contacting the third stream with a fourth stream comprising an aqueous metal hydroxide (MOH) solution to convert NO and NO2 to MNO2.
Claims20
A device for converting NOx and/or SOx gases to other compounds, the device comprising:
- a reaction vessel comprising:
- a first inlet for introducing a gas stream comprising NOx and/or SOx gas into the reaction vessel;
- a second inlet for introducing ClO2 gas or mist into the reaction vessel downstream from the first inlet;
- a nozzle connected with the second inlet and positioned at a distance inside the reaction vessel to dispense the ClO2 into a flow path inside the reaction vessel;
- and
- a turbulence inducing device attached within the reaction vessel to produce a turbulent flow condition inside the reaction vessel to promote combining the gas stream and the ClO2 to form a mixture that undergoes a gas or mist phase reaction to convert the NOx and/or SOx gas to other nitrogen and/or sulfur compounds for removal from the vessel.
A device for converting NOx and/or SOx gas in a single-stage process, the device comprising:
- a single-stage reaction vessel comprising a reaction chamber configured to provide a desired residence time of volumetric flow therein to promote the single-stage process;
- a first inlet at one end of the reaction vessel for introducing NOx and/or SOx gas into the reaction chamber;
- a second inlet located downstream of the first inlet for introducing ClO2 gas or mist into the reaction chamber;
- a nozzle connected with the second inlet and positioned inside of the reaction vessel to disperse the ClO2 into the NOx and/or SOx gas;
- and
- a static turbulence inducing device mounted within the reaction chamber independent of the first inlet and second inlet and is configured to cause a turbulent flow condition inside the reaction chamber to promote mixing and reaction between the ClO2 and the NOx and/or SOx gas to convert the NOx and/or SOx to other nitrogen or sulfur containing materials.
A device for converting NOx and/or SOx present in a waste gas stream, the device comprising:
- a reaction vessel;
- a first inlet at one end of the reaction vessel for introducing a waste gas stream comprising NOx and/or SOx into the reaction vessel chamber;
- a second inlet located downstream of the first inlet for introducing ClO2 in a gas or fluid phase into the reaction vessel chamber, wherein the ClO2 is dispersed into the waste gas stream flowing through the reaction vessel chamber;
- and
- a turbulence inducing device mounted within the reaction vessel chamber downstream from the second inlet to cause a turbulent flow condition inside the reaction vessel chamber to promote mixing and reaction between the ClO2 and waste gas to convert the NOx and/or SOx to other nitrogen or sulfur containing materials.
Dependencies are inferred from the claim text.