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Title: Transformations of inorganic coal constituents in combustion systems

Abstract

The inorganic constituents or ash contained in pulverized coal significantly increase the environmental and economic costs of coal utilization. For example, ash particles produced during combustion may deposit on heat transfer surfaces, decreasing heat transfer rates and increasing maintenance costs. The minimization of particulate emissions often requires the installation of cleanup devices such as electrostatic precipitators, also adding to the expense of coal utilization. Despite these costly problems, a comprehensive assessment of the ash formation and had never been attempted. At the start of this program, it was hypothesized that ash deposition and ash particle emissions both depended upon the size and chemical composition of individual ash particles. Questions such as: What determines the size of individual ash particles What determines their composition Whether or not particles deposit How combustion conditions, including reactor size, affect these processes remained to be answered. In this 6-year multidisciplinary study, these issues were addressed in detail. The ambitious overall goal was the development of a comprehensive model to predict the size and chemical composition distributions of ash produced during pulverized coal combustion. Results are described.

Authors:
 [1]; ; ;  [2]; ; ; ;  [3]; ; ; ;  [4]; ; ; ;  [5]
  1. (ed.)
  2. (PSI Technology Co., Andover, MA (United States))
  3. (Massachusetts Inst. of Tech., Cambridge, MA (United States))
  4. (Arizona Univ., Tucson, AZ (United States))
  5. (Kentucky Univ., Lexingt
Publication Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center, PA (United States); PSI Technology Co., Andover, MA (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6513966
Report Number(s):
DOE/PC/90751-T15-VOL.1
ON: DE93013076
DOE Contract Number:  
AC22-86PC90751
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ASHES; CHEMICAL COMPOSITION; COAL; COMBUSTION; INORGANIC COMPOUNDS; CHEMICAL REACTIONS; ADHESION; CHARS; COMBUSTORS; DEPOSITION; EFFICIENCY; MINERALS; PARTICLE SIZE; PROGRESS REPORT; CARBONACEOUS MATERIALS; COMBUSTION PRODUCTS; DOCUMENT TYPES; ENERGY SOURCES; FOSSIL FUELS; FUELS; MATERIALS; OXIDATION; PYROLYSIS PRODUCTS; RESIDUES; SIZE; THERMOCHEMICAL PROCESSES; 014000* - Coal, Lignite, & Peat- Combustion; 010600 - Coal, Lignite, & Peat- Properties & Composition

Citation Formats

Helble, J.J., Srinivasachar, S., Wilemski, G., Boni, A.A., Kang, Shin-Gyoo, Sarofim, A.F., Graham, K.A., Beer, J.M., Peterson, T.W., Wendt, J.O.L., Gallagher, N.B., Bool, L., Huggins, F.E., Huffman, G.P., Shah, N., and Shah, A. Transformations of inorganic coal constituents in combustion systems. United States: N. p., 1992. Web. doi:10.2172/6513966.
Helble, J.J., Srinivasachar, S., Wilemski, G., Boni, A.A., Kang, Shin-Gyoo, Sarofim, A.F., Graham, K.A., Beer, J.M., Peterson, T.W., Wendt, J.O.L., Gallagher, N.B., Bool, L., Huggins, F.E., Huffman, G.P., Shah, N., & Shah, A. Transformations of inorganic coal constituents in combustion systems. United States. doi:10.2172/6513966.
Helble, J.J., Srinivasachar, S., Wilemski, G., Boni, A.A., Kang, Shin-Gyoo, Sarofim, A.F., Graham, K.A., Beer, J.M., Peterson, T.W., Wendt, J.O.L., Gallagher, N.B., Bool, L., Huggins, F.E., Huffman, G.P., Shah, N., and Shah, A. Sun . "Transformations of inorganic coal constituents in combustion systems". United States. doi:10.2172/6513966. https://www.osti.gov/servlets/purl/6513966.
@article{osti_6513966,
title = {Transformations of inorganic coal constituents in combustion systems},
author = {Helble, J.J. and Srinivasachar, S. and Wilemski, G. and Boni, A.A. and Kang, Shin-Gyoo and Sarofim, A.F. and Graham, K.A. and Beer, J.M. and Peterson, T.W. and Wendt, J.O.L. and Gallagher, N.B. and Bool, L. and Huggins, F.E. and Huffman, G.P. and Shah, N. and Shah, A.},
abstractNote = {The inorganic constituents or ash contained in pulverized coal significantly increase the environmental and economic costs of coal utilization. For example, ash particles produced during combustion may deposit on heat transfer surfaces, decreasing heat transfer rates and increasing maintenance costs. The minimization of particulate emissions often requires the installation of cleanup devices such as electrostatic precipitators, also adding to the expense of coal utilization. Despite these costly problems, a comprehensive assessment of the ash formation and had never been attempted. At the start of this program, it was hypothesized that ash deposition and ash particle emissions both depended upon the size and chemical composition of individual ash particles. Questions such as: What determines the size of individual ash particles What determines their composition Whether or not particles deposit How combustion conditions, including reactor size, affect these processes remained to be answered. In this 6-year multidisciplinary study, these issues were addressed in detail. The ambitious overall goal was the development of a comprehensive model to predict the size and chemical composition distributions of ash produced during pulverized coal combustion. Results are described.},
doi = {10.2172/6513966},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {11}
}