0
Technical Briefs

Spectroscopic Observation of Chemical Species From High-Temperature Air Pulverized Coal Combustion

[+] Author and Article Information
Nelfa Desmira, Kuniyuki Kitagawa

Division of Energy Science,
EcoTopia Science Institute,
Nagoya University,
Nagoya, 464-8603, Japan

Takuya Nagasaka

Department of Applied Chemistry,
Graduate School of Engineering,
Nagoya University,
Nagoya 464-8603, Japan

Akira Ishikawa

Chubu Electric Power Co., Inc.,
Nagoya, Aichi, 461-8522, Japan

Ashwani K. Gupta

Department of Mechanical Engineering,
University of Maryland,
College Park, MD 20742
e-mail: akgupta@umd.edu

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received March 11, 2013; final manuscript received March 12, 2013; published online April 30, 2013. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 135(3), 034503 (Apr 30, 2013) (5 pages) Paper No: JERT-13-1084; doi: 10.1115/1.4024120 History: Received March 11, 2013; Revised March 12, 2013

In situ monitoring of chemical species from the combustion pulverized coal in high-temperature air is examined using several different spectroscopic diagnostic at different equivalence ratios. Two-dimensional (2D) distributions of flame temperature were obtained using a thermal video camera. The experimental results showed the temperatures to range from low to 1400 °C under various conditions of fuel-lean, stoichiometric, and fuel-rich. The highest temperature and flame stability were obtained under fuel-lean combustion condition. The chemical species generated from within the combustion zone were analyzed from the spontaneous emission spectra of the flame in the Ultraviolet–visible (UV-Vis) range. The spatial distribution of NO, OH, and CN were identified from the spectra. The 2D distribution of emission intensity visualized and recorded for NO, OH, and CN revealed high-temperatures close to the root of the flame that rapidly dispersed radially outward to provide very high temperatures over a much larger volume at further downstream locations of the flame.

FIGURES IN THIS ARTICLE
<>
Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Ministry of Economic, Trade and Industry, Government of Japan, “2010 Annual Report on Energy” (Japan's Energy White Paper 2010), June 2010, http://www.meti.go.jp/english/press/data/pdf/20100615_04a.pdf, February15, 2011.
Tsuji, H., Gupta, A. K., Hasegawa, T., KatsukiK., Kishimoto, K., and Morita, M., 2003, High Temperature Air Combustion: From Energy Conservation to Pollution Reduction, CRC Press, Boca Raton.
Gupta, A. K., Bolz, S., and Hasegawa, T., 1999, “Effect of Air Preheat and Oxygen Concentration on Flame Structure and Emission,” Proc. ASME J. Energy Resour. Technol., 121, pp. 209–216. [CrossRef]
Hasegawa, T., Mochida, S., and Gupta, A. K., 2002, “Development of Advanced Industrial Furnace Using Highly Preheated Combustion Air,” J. Propul. Power, 18(2), pp. 233–239. [CrossRef]
Kitagawa, K., Konishi, N., Arai, N., and Gupta, A. K., 2003, “Temporally Resolved 2-D Spectroscopic Study on the Effect of Highly Preheated and Low Oxygen Concentration Air on Combustion,” ASME J. Eng. Gas Turbine Power, 125, pp. 326–331. [CrossRef]
Khalil, A., Gupta, A. K., and Lee, S. C., 2012, “Mixture Preparation Effects on Distributed Combustion for Gas Turbine Applications,” ASME J. Energy Resour. Technol., 134, p. 032201. [CrossRef]
Gupta, A. K., 2000, “Flame Characteristics With High Temperature Air Combustion,” 38th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 10–13, Paper No. 2000-0593.
Gupta, A. K., and Hasegawa, T., 1999, “The Effect of Air Preheat Temperature Air and Oxygen Concentration in Air on the Structure of Propane Air Diffusion Flames,” 37th Aerospace Sciences Meeting and Exhibit, American Institute of Aeronautics and Astronautics, Reno, NV, Jan. 11–14, Paper No. 99-0725.
Yang, W. H., and Blasiak, W., 2005, “Numerical Study of Fuel Temperature Influence on Single Gas Combustion in Highly Preheated and Oxygen Deficient Air,” Energy, 30, pp. 385–398. [CrossRef]
Choi, G. M., and Kutsuki, M., 2001, “Advanced Low NOx Combustion Using Highly Preheated Air,” Energy Convers. Manage., 42, pp. 639–652. [CrossRef]
Lille, S., Blasiak, W., and Jewartowski, M., 2005, “Experimental Study of the Fuel Jet Combustion in High-Temperature and Low Oxygen Content Exhaust Gases,” Energy, 30, pp. 373–384. [CrossRef]
Zhu, J., Lu, Q., Niu, T., Song, G., and Na, Y., 2009, “NO Emission on Pulverized Coal Combustion in High-Temperature Air From Circulating Fluidized Bed—A Experimental Study,” Fuel Process. Technol., 90, pp. 664–670. [CrossRef]
Lu, Q., Zhu, J., Niu, T., Song, G., and Na, Y., 2008, “Pulverized Coal Combustion and NOx Emissions in High-Temperature Air From Circulating Fluidized Bed,” Fuel Process. Technol., 89, pp. 1186–1192. [CrossRef]
Suda, T., Takafuji, M., Riechelmann, D., Hirata, T., and Sato, J., 2004, “Development of High-Temperature Air Combustion Technology (HiCOT) for Pulverized Coal Combustion,” Ishikawajima-Harima Eng. Rev., 44(3), pp. 199–208.
Kopparthi, V., and Gollahalli, S. R., 1995, “Nitric Oxide Emission From Pulverized Coal Blend Flames,” ASME J. Energy Resour. Technol., 117(3), pp. 228–233. [CrossRef]
Jang, D. S., and Acharya, S., 2009, “Moment Closure Model for Nitrogen Oxide Formation in Pulverized Coal Combustion Furnaces,” ASME J. Energy Resour. Technol., 113(2), pp. 117–121. [CrossRef]
Jang, D. S., and Acharya, S., 1988, “Improved Modelling of Pulverized Coal Combustion in a Furnace,” ASME J. Energy Resour. Technol., 110(2), pp. 124–132. [CrossRef]
Ito, S., 1998, “Spectroscopic Visualization of NO Radical During Combustion Flame With High Temperature Air,” Master's thesis, Applied Chemical Department, Nagoya University, Japan.
Gupta, A. K., 1996, “Thermal Destruction of Solid Wastes,” ASME J. Energy Resour. Technol., 118, pp. 187–192. [CrossRef]

Figures

Grahic Jump Location
Fig. 1

A schematic of the pulverized coal experimental facility

Grahic Jump Location
Fig. 2

Measurement locations in the flame

Grahic Jump Location
Fig. 3

Profile of NO, OH, and CN using spectroscopy for fuel-lean, stoichiometric, and fuel-rich pulverized coal flames at 5 mm flame height

Grahic Jump Location
Fig. 4

Spontaneous emission intensity of CN, OH, and NO at the three flame heights

Grahic Jump Location
Fig. 5

A graphic representation on the formation of CN, OH, and NO (both from fuel and thermal NO) from the pulverized coal flames

Grahic Jump Location
Fig. 6

Visualization of CN, OH, and NO emissions using CCD camera for fuel-lean, stoichiometric, and fuel-rich pulverized coal flames

Grahic Jump Location
Fig. 7

Evolutionary behavior of 2D temperature distribution in fuel-lean, stoichiometric, and fuel-rich flames

Grahic Jump Location
Fig. 8

2D mean temperature and RSD profiles for fuel-lean, stoichiometric, and fuel-rich pulverized coal flames

Grahic Jump Location
Fig. 9

Correlation between NO concentration and flame temperature distribution

Grahic Jump Location
Fig. 10

Calibration of NO in pulverized coal flames at φ = 1

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In