Physical Testing of a Multipoint Ground Flare Burner Utilizing Low BTU Flare Gas

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Title Physical Testing of a Multipoint Ground Flare Burner Utilizing Low BTU Flare Gas
Creator Martin, M.
Contributor Lowery, T., Beck, B., Kraus, K., Maley, C.
Date 2015-09-10
Spatial Coverage Salt Lake City, Utah
Subject 2015 AFRC Industrial Combustion Symposium
Description Paper from the AFRC 2015 conference titled Physical Testing of a Multipoint Ground Flare Burner Utilizing Low BTU Flare Gas
Abstract Pressure-assisted burners are used within multipoint flares in large numbers to provide smokeless operation without the use of steam or assist air. In the United States of America flares must conform to the regulations in 40 CFR 60.18 and 40 CFR 63.11.; Previous evaluation of flares for the region of stable operation has resulted in the use of exit velocity as the means of determining a stable flame. This method cannot be applied to pressure-assisted flares. The combustion efficiency of flares has also previously been correlated with the combustion zone net heating value and the combustion zone lower flammability limit.; A review of available data reveals that neither combustion zone net heating value nor combustion zone flammability limit are good predictors of combustion efficiency for pressure-assisted flares. Statistics calculated from the data also indicate that the manufacture of the burner head is also significant to determining the combustion efficiency of the flare although all of the data available showed the burners outperformed current EPA requirements.; Based on the prior test experience of others a test was designed and carried out for the Callidus MP4U pressure-assisted flare burner utilizing low heating value vent gas with mixtures of ethylene and nitrogen. The MP4U burner demonstrated stable flame for long duration with an average vent gas heating value of 501 Btu/SCF. The burner did not experience flame instability until a vent gas mixture of 375 Btu/SCF.; It is suggested that combustion zone net heating value and combustion zone lower flammability limit might not be useful in determining both the combustion efficiency and the flame stability of pressure-assisted burners.
Type Event
Format application/pdf
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ARK ark:/87278/s6wd89f9
Setname uu_afrc
Date Created 2018-11-30
Date Modified 2021-05-06
ID 1387838
Reference URL