PURE OXYGEN COMBUSTION METHOD WITH LOW NITROGEN SOURCE
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United States of America Patent
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Nov 18, 2021
app pub date -
Nov 30, 2017
filing date -
Nov 29, 2017
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Abstract
A pure oxygen combustion method with a low nitrogen source is provided, relating to a technical field of thermal engineering. The method includes steps of: adopting a low nitrogen fuel, and adopting pure oxygen as a combustion-supporting gas; separately transporting the pure oxygen and the low nitrogen fuel; controlling a ratio of the pure oxygen to the low nitrogen fuel; and combusting tangentially in the pure oxygen in a combustion chamber, so as to realize deep burnout of the low nitrogen fuel and decrease CO and NOx emission concentrations. The present invention realizes nitrogen source reduction before combustion, reduces NOx emissions, and increases a thermal energy conversion efficiency of the fuel, without a flue gas de-nitrification device. Therefore, a NOx emission concentration is 5-100 mg/m3, a CO emission concentration is 50-500 mg/m3, and a combustion efficiency of the fuel is beyond 95%.
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