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Full text of this paper is not available in the ETD Center. Copies may be available for inter-library loan from University of Cincinnati or may be available for purchase from Proquest/UMI

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The Study of NOx Emission as Affected by the Chemical Properties of Ohio Coals in a Drop Tube Reactor

Jung, Kyung Sook
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1005682657

Abstract Details

2001, MS, University of Cincinnati, Engineering : Environmental Engineering.
This paper summarizes the findings of a study on the effect of the chemical and physical properties of Ohio coals on NO x emissions, as well as combustion conditions that promote lower levels of pollutant release. The results were obtained in a drop-tube reactor under controlled laboratory conditions with well-characterized samples of Ohio coals. Ten Coal samples were obtained from the Penn State Coal Sample Bank and selected based on their levels of fixed carbon, volatility and nitrogen content. The heat contents of the 10 coals were similar. Tests on monodispersed sized coal particles were conducted in the ceramic drop-tube reactor at 1200°C and a gas residence time of 0.5 sec. The diameter of the ceramic drop tube reactor was 5.08 cm and its length was 110.5 cm. The air/fuel (A/F) ratio was maintained at 1.1 and the coal feed rate was 7 – 9 mg/min. The percent nitrogen in the raw coal ranged from 1.24 to 2.5%wt. For a majority of the experiments, samples were prepared in sizes between 15 to 25 micrometers. From the experimental results, it was found that relative NO x emissions varied by as much as 100% and that a linear relationship exists between relative NO x formation and the chemical and physical properties of Ohio coals. NO x emissions depend on the properties of fixed carbon (FC), volatile matter (VM) and nitrogen (N) in the raw coals. As a result, relative NO x gas emissions were predicted, which may be useful in terms of coal selection for any source using Ohio coals.
Dr. Tim C. Keener (Advisor)
1 p.
Engineering, Environmental
ohio coal; NOx emission; chemical properties; drop-tube reactor; NOx-model

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Citations

  • Jung, K. S. (2001). The Study of NOx Emission as Affected by the Chemical Properties of Ohio Coals in a Drop Tube Reactor [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1005682657

    APA Style (7th edition)

  • Jung, Kyung. The Study of NOx Emission as Affected by the Chemical Properties of Ohio Coals in a Drop Tube Reactor. 2001. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1005682657.

    MLA Style (8th edition)

  • Jung, Kyung. "The Study of NOx Emission as Affected by the Chemical Properties of Ohio Coals in a Drop Tube Reactor." Master's thesis, University of Cincinnati, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1005682657

    Chicago Manual of Style (17th edition)

ucin1005682657
© 2001, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.