Methods of reducing NO/sub chi/ and SO/sub chi/ emissions from combustion systems

Patent · Tue Aug 29 04:00:00 EDT 1989

OSTI ID:5431644

Heap, M P; Chen, S L; McCarthy, J M; Pershing, D W

This patent describes a process for selectively reducing nitrogen oxides in combustion effluent streams. It comprises the steps of: introducing cyanuric acid into a gaseous decomposition zone wherein the decomposition zone is substantially oxygen deficient and contains CO and H/sub 2/0, and is maintained at a temperature in the range of from approximately 1000{sup 0}F. to approximately 3000{sup 0}F.; allowing the cyanuric acid sufficient residence time within the decomposition zone to allow for substantial mixing of the cyanuric acid and gaseous species within the decomposition zone; introducing the resulting gaseous mixture from the decomposition zone to a reaction zone containing combustion effluents, the reaction zone having an excess of oxygen; and allowing the gaseous mixture from the decomposition zone sufficient residence time within the reaction zone to achieve substantial reduction of the nitrogen oxides within the combustion effluents.

• Assignee: Energy and Environmental Research Corp., Irvine, CA
• Patent Number(s): US 4861567
• Application Number: PPN: US 7-039324A
• OSTI ID: 5431644
• Country of Publication: United States
• Language: English

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AIR POLLUTION CONTROL
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GASEOUS WASTES
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OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PURIFICATION
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SULFUR DIOXIDE
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WASTES