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Refinery process-heater NOx control by staged combustion air lances

Technical Report ·
OSTI ID:6679869
This paper gives results of tests of a natural-draft petroleum-refinery crude-oil process heater, modified to reduce oxides of nitrogen (NOx) emissions by installing staged-combustion air lances. Baseline nitric oxide (NO) emissions firing refinery gas before modification were measured to be 100-125 ppm by volume, dry, corrected to 3% oxygen. Staged-combustion air lances bypassed combustion air around the burners to achieve staged combustion. With the modification, an average reduction of 64% in NO emissions was observed over a 30-day test period, with NO emissions of 25-50 ppm, depending on the excess air.
Research Organization:
KVB, Inc., Irvine, CA (USA)
OSTI ID:
6679869
Report Number(s):
PB-88-249867/XAB; KVB-72-P-322
Country of Publication:
United States
Language:
English