Open tip burner assembly for waste gas flares and methods of using the same
The open tip burner assembly with a swirl plate and lean waste gas-oxidant mixture effectively addresses the inefficiencies of conventional surface burners by achieving ultra-low NOx emissions and stable operation in waste gas flares.
US20250389418A1Pending Publication Date: 2025-12-25PERENNIAL ENERGY LLC
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Patent Information
- Application Number
- US19/210628
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- Priority Date
- 2024-06-20
- Filing Date
- 2025-05-16
- Publication Date
- 2025-12-25
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Figure US20250389418A1-D00000_ABST
Abstract
A flare system operable at ultra-low nitrous oxide (NOx) emission levels without utilizing a surface burner. The flare system includes a flare stack and a burner assembly positioned in the flare stack between a closed plenum and an open exhaust chamber, the burner assembly and the flare stack defining an excess oxidant passage for routing excess oxidant between the plenum and the exhaust chamber. The burner assembly includes: a body defining a central passage through which oxidant and waste gas flow, the central passage being separated from the excess oxidant passage, a burner tip defining an open tip passage through which the oxidant and the waste gas flow from the central passage into the exhaust chamber, and a swirl plate positioned upstream of the burner tip. The swirl plate operates to direct and anchor a combustion flame ignited in the exhaust chamber.
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