Black carbon particulate matter emission factors for buoyancy-driven associated gas flares

被引:62
作者
McEwen, James D. N. [1 ]
Johnson, Matthew R. [1 ]
机构
[1] Carleton Univ, Dept Mech & Aerosp Engn, Energy & Emiss Res Lab, Ottawa, ON K1S 5B6, Canada
关键词
JET DIFFUSION FLAMES; FUEL STRIPPING MECHANISM; COMBUSTION EFFICIENCY; SOOT; RADIATION; MOMENTUM; OIL;
D O I
10.1080/10473289.2011.650040
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Flaring is a technique used extensively in the oil and gas industry to burn unwanted flammable gases. Oxidation of the gas can preclude emissions of methane (a potent greenhouse gas); however; flaring creates other pollutant emissions such as particulate matter (PM) in the form of soot or black carbon (BC). Currently available PM emission factors for flares were reviewed and found to he questionably accurate, or based on measurements not directly relevant to open-atmosphere flares. In addition, most previous studies of soot emissions from turbulent diffusion flames considered alkene or alkyne based gaseous fuels, and few considered mixed fuels in detail and/or lower sooting propensity fuels such as methane, which is the predominant constituent of gas flared in the upstream oil and gas industry. Quantitative emission measurements were performed on laboratory-scale flares for a range of burner diameters, exit velocities, and fuel compositions. Drawing from established standards, a sampling protocol was developed that employed both gravimetric analysis of filter samples and real-time measurements of soot volume fraction using a laser-induced incandescence (LII) system. For the full range of conditions tested (burner inner diameter [ID] of 12.7-76.2 mm, exit velocity 0.1-2.2 m/sec, 4- and 6-component methane-based fuel mixtures representative of associated gas in the upstream oil industry), measured soot emission factors were less than 0.84 kg soot/10(3) m(3) fuel. A simple empirical relationship is presented to estimate the PM emission factor as a function of the fuel heating value for a range of conditions, which, although still limited, is an improvement over currently available emission factors.
引用
收藏
页码:307 / 321
页数:15
相关论文
共 56 条
[1]  
ANSI/ASME, 1985, 191 ANSIASME PTC
[2]   TOTAL EMISSION OF SOOT AND THERMAL-RADIATION BY FREE TURBULENT-DIFFUSION FLAMES [J].
BECKER, HA ;
LIANG, D .
COMBUSTION AND FLAME, 1982, 44 (1-3) :305-318
[3]   VISIBLE LENGTH OF VERTICAL FREE TURBULENT-DIFFUSION FLAMES [J].
BECKER, HA ;
LIANG, D .
COMBUSTION AND FLAME, 1978, 32 (02) :115-137
[4]   Historical emissions of black and organic carbon aerosol from energy-related combustion, 1850-2000 [J].
Bond, Tami C. ;
Bhardwaj, Ekta ;
Dong, Rong ;
Jogani, Rahil ;
Jung, Soonkyu ;
Roden, Christoph ;
Streets, David G. ;
Trautmann, Nina M. .
GLOBAL BIOGEOCHEMICAL CYCLES, 2007, 21 (02)
[5]   The use of a closed-loop wind tunnel for measuring the combustion efficiency of flames in a cross flow [J].
Bourguignon, E ;
Johnson, MR ;
Kostiuk, LW .
COMBUSTION AND FLAME, 1999, 119 (03) :319-334
[6]   FLARING IN ENERGY INDUSTRY [J].
BRZUSTOWSKI, TA .
PROGRESS IN ENERGY AND COMBUSTION SCIENCE, 1976, 2 (03) :129-141
[7]  
Canteenwalla P.M, 2007, SOOT EMISSIONS TURBU
[8]  
CAPP, 2007, REC APPR COMPL NAT P
[9]   Measurement of ultrafine particle size distributions from coal-, oil-, and gas-fired stationary combustion sources [J].
Chang, MCO ;
Chow, JC ;
Watson, JG ;
Hopke, PK ;
Yi, SM ;
England, GC .
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 2004, 54 (12) :1494-1505
[10]   SMOKE YIELDS FROM TURBULENT BUOYANT JET FLAMES [J].
DELICHATSIOS, MA .
FIRE SAFETY JOURNAL, 1993, 20 (04) :299-311