Some characteristics of multi-jet flares

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Title Some characteristics of multi-jet flares
Creator Pagot, P. R.; Grandmaison, E. W.; Sobiesiak, A.
Publication type report
Publisher American Flame Research Committee (AFRC)
Program American Flame Research Committee (AFRC)
Date 2004
Description Results of a test program with a multi-jet, high momentum burner simulating many of the features found in offshore flare systems are described. Previous work (Pagot et al., 2003) has given background on a hot and cold model study for this type of flare. The features of the flare flames are described in more detail in this paper. The burner consisted of twenty-four nozzles mounted on eight supply lines with firing rates in the range of 268 - 523 kW, corresponding to jet velocities of 39.3 - 78.5 m/s with a natural gas fuel. The flare model was tested with different nozzle fittings and jet to cross-flow momentum flux ratios ranging from 65 to 268. The flame structure was identified through the use of still pictures and CCD imaging techniques. Gas temperature and composition measurements along the flare trajectory were also obtained. This multi-jet configuration provides good flare stability allowing firing rates higher than single jets in a cross-flow. Over the range of firing rates investigated, the flame could be divided in two regions, a momentum interaction zone where there is an initial mixing between the fuel jets and the cross flow, followed by a zone where there was a straight flame trajectory characteristic of a strongly buoyant flame. Near the transition point between these regions there was a higher gas temperature, minimum O2 concentration and maximum CO concentration. The flare efficiency, expressed in terms of the unburned hydrocarbon fuel, was in typically in excess of 99%.
Type Text
Format application/pdf
Language eng
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Metadata Cataloger CLR; AM
ARK ark:/87278/s6v74mq2
Relation has part Pagot, P. R., Grandmaison, E. W., & Sobiesiak, A. (2004). Some characteristics of multi-jet flares. American Flame Research Committee (AFRC).
Format medium application/pdf
Rights management (c)American Flame Research Committee (AFRC)
Setname uu_afrc
Date Created 2020-02-11
Date Modified 2021-05-06
ID 1525767
Reference URL