Effect of limestone addition on PM2.5 formation during fluidized bed coal combustion under O2/CO2 atmosphere

QU Cheng-rui; XU Bin; WU Jian; LIU Jian-xin; WANG Xue-tao

Volume 41 Issue 08

Aug. 2013

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(08): 1020-1024

QU Cheng-rui, XU Bin, WU Jian, LIU Jian-xin, WANG Xue-tao. Effect of limestone addition on PM2.5 formation during fluidized bed coal combustion under O2/CO2 atmosphere[J]. Journal of Fuel Chemistry and Technology, 2013, 41(08): 1020-1024.

Citation:

QU Cheng-rui, XU Bin, WU Jian, LIU Jian-xin, WANG Xue-tao. Effect of limestone addition on PM_2.5 formation during fluidized bed coal combustion under O₂/CO₂ atmosphere[J]. Journal of Fuel Chemistry and Technology, 2013, 41(08): 1020-1024.

Citation:

PDF( 1834 KB)

Effect of limestone addition on PM_2.5 formation during fluidized bed coal combustion under O₂/CO₂ atmosphere

College of Vehicle & Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, China

Received Date: 2013-03-11
Rev Recd Date: 2013-05-29
Publish Date: 2013-08-30

Abstract

Abstract

The effect of limestone addition on the emission characteristics of PM_2.5 (particulates with aerodynamic diameter less than 2.5 μm) was studied in a fluidized bed combustor. The combustion tests were carried out at 1 123 K under O₂/CO₂ atmosphere. The PM_2.5 generated from coal combustion was collected and analyzed with an Electrical Low Pressure Impactor (ELPI). The results indicate that limestone has a great effect on the formation of PM_2.5 during coal combustion under O₂/CO₂ atmosphere. The concentration of PM_1.0 is diminished; but the concentration of PM_1.0~2.5 is enhanced slightly with the addition of limestone. The mass size distribution of PM_2.5 is similar, which displays two peaks around 0.2 and 2.0 μm, respectively. As the molar ratio of Ca/S increases, the concentrations of Si, Na, K, S, and Cu decrease. As the particle size decreases, the concentrations of S, Cu, K, and Na increase, but the concentrations of Si decrease.
- O₂/CO₂,
- coal combustion,
- PM_2.5,
- fluidized bed,
- limestone

FullText(HTML)

References(15)

References

LINAK W P, YOO J I, WASSON S J, ZHU W Y, WENDT J O L, HUGGINS F E, CHEN Y Z, SHAH N, HUFFMAN G P, GILMOUR M I. Ultrafine ash aerosols from coal combustion: Characterization and health effects[J]. P Combust Inst, 2007, 31(2): 1929-1937.

WANG Q Y, ZHANG L, SATO A, NINOMIYA Y, YAMASHITA T. Effects of coal blending on the reduction of PM(10) during high-temperature combustion 2. A coalescence-fragmentation model[J]. Fuel, 2009, 88(1): 150-157.

WANG S Z, BAXTER L, FONSECA F. Biomass fly ash in concrete: SEM, EDX and ESEM analysis[J]. Fuel, 2008, 87(2): 372-379.

BUHRE B J P, HINKLEY J T, GUPTA R P, NELSON P F, WALL T F. Fine ash formation during combustion of pulverized coal-coal property impacts[J]. Fuel, 2006, 85(2): 185-193.

YU Y, XU M H, YAO H, YU D X, QIAO Y, SUI J C, LIU X W, CAO Q. Char characteristics and particulate matter formation during Chinese bituminous coal combustion[J]. P Combust Inst, 2007, 31(2): 1947-1954.

CHEN Y Z, NARESH S, HUGGINS F E. Investigation of primary fine particulate matter from coal combustion by computer-controlled scanning electron microscopy[J]. Fuel Process Technol, 2004, 85(6-7): 743-761.

吕建燚, 李晶欣. 煤粉物化特性对燃烧后灰颗粒物的影响[J]. 燃料化学学报, 2011, 39(6): 419-424. (Lü Jian-yi, Li Jing-xing. Influence of coal physicochemical properties on ash particulate matter after coal combustion[J]. Journal of Fuel Chemistry and Technology, 2011, 39(6): 419-424.)

朱建航, 胡勤海, 陈菊芬, 张辉, 刘建忠, 岑可法. 污泥水煤浆燃烧和污染排放特性研究[J]. 燃料化学学报, 2012, 40(2): 252-256. (ZHU Jian-hang, HU Qin-hai, CHEN Ju-fen, ZHANG hui, LIU Jian-zhong, CEN Ke-fa. Combustion of sludge coal water slurry and emission property of contaminants[J]. Journal of Fuel Chemistry and Technology, 2012, 40(2): 252-256.)

BUHRE B J P, HINKLEY J T, GUPTA R P, WALL T F, LSON P F. Submicron ash formation from coal combustion[J]. Fuel, 2005, 84(10): 1206-1214.

XU M H, YU D X, YAO H, LIU X W, QIAO Y. Coal combustion-generated aerosols: Formation and properties[J]. P Combust Inst, 2011, 33(1): 1681-1697.

SHENG C D, LU Y H, GAO X P, YAO H. Fine ash formation during pulverized coal combustions-a comparison of O₂/CO₂ combustion versus air combustion[J]. Energy Fuels, 2007, 21(2): 435-440.

LINAK W P, SRIVASTAVA R K, WENDT J O L. Sorbent capture of nickel, lead and cadmium in a laboratory swirl flame incinerator[J]. Combust Flame, 1994, 100(1-2): 241-250.

MORRIS W J, YU D X, WENDT J O L. Soot, unburned carbon and ultrafine particle emissions from air- and oxy-coal flames[J]. P Combust Inst, 2011, 33(2): 3415-3421.

FRYDA L, SOBRINO C, GLAZER M. Study of ash deposition during coal combustion under oxyfuel conditions[J]. Fuel, 2012, 92(1): 308-317.

王春波, 雷鸣, 阎维平, 王松岭. 煤粉的增压富氧燃烧特性及煤灰矿物演变[J]. 燃料化学学报, 2012, 40(7): 790-794. (WANG Chun-bo, LEI Ming, YAN Wei-ping, WANG Song-ling. Combustion characteristics of pulverized coal and mineral conversion under pressurized oxy-fuel condition[J]. Journal of Fuel Chemistry and Technology, 2012, 40(7): 790-794.)

Relative Articles

Supplements(0)

Cited By

Proportional views