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Title: Combustion characterization of coals for industrial applications. Final technical report, January 1, 1981-May 29, 1985

Abstract

In-depth fundamental information was obtained from a two-inch inner diameter laminar flow reactor referred to as the Drop Tube Furnace System (DTFS). This information consists of the following: (1) pyrolysis kinetic characteristics of four coals of various rank (Texas lignite, Montana subbituminous, Alabama high volatile bituminous, and Pennsylvania anthracite); and (2) combustion kinetic studies of chars produced from the foregoing parent coals. A number of standard ASTM and special in-house bench scale tests were also performed on the coals and chars prepared therefrom to characterize their physicochemical properties. The pilot scale (500,000 Btu/hr) Controlled Mixing History Furnace (CMHF) was used to determine the effect of staged combustion on NO/sub x/ emissions control from an overall combustion performance of the Alabama high volatile bituminous coal. The quantitative fundamental data developed from this study indicate significant differences in coal/char chemical, physical, and reactivity characteristics, which should be useful to those interested in modeling coal combustion and pyrolysis processes. These results underscore the fact that coal selection is one of the keys governing a successful coal conversion/utilization process. The combustion kinetic information obtained on the high volatile bituminous coal has been used in conjunction with combustion engineering's proprietary mathematical models to predict themore » combustion performance of this coal in the Controlled Mixing History Furnace. Comparison of the predicted data with the experimental results shows a virtually one-to-one scale-up from the DTFS to the CMHF. These data should provide vital information to designers in the area of carbon burnout and NO/sub x/ reduction for large scale coal utilization applications. 31 refs., 28 figs., 17 tabs.« less

Authors:
; ;
Publication Date:
Research Org.:
Combustion Engineering, Inc., Windsor, CT (USA). Power Systems Group
OSTI Identifier:
5880865
Report Number(s):
DOE/PC/40267-5
ON: DE85010673
DOE Contract Number:  
AC22-81PC40267
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ANTHRACITE; CHEMICAL COMPOSITION; PARTICLE SIZE; PYROLYSIS; BITUMINOUS COAL; COMBUSTION KINETICS; STAGED COMBUSTION; CHARS; LIGNITE; NITROGEN OXIDES; CHEMICAL REACTION YIELD; SUBBITUMINOUS COAL; AIR POLLUTION ABATEMENT; EXPERIMENTAL DATA; FURNACES; MATHEMATICAL MODELS; RESEARCH PROGRAMS; STOICHIOMETRY; THERMAL GRAVIMETRIC ANALYSIS; BLACK COAL; BROWN COAL; CARBONACEOUS MATERIALS; CHALCOGENIDES; CHEMICAL ANALYSIS; CHEMICAL REACTION KINETICS; CHEMICAL REACTIONS; COAL; COMBUSTION; DATA; DECOMPOSITION; ENERGY SOURCES; FOSSIL FUELS; FUELS; GRAVIMETRIC ANALYSIS; INFORMATION; KINETICS; MATERIALS; NITROGEN COMPOUNDS; NUMERICAL DATA; OXIDATION; OXIDES; OXYGEN COMPOUNDS; POLLUTION ABATEMENT; PYROLYSIS PRODUCTS; QUANTITATIVE CHEMICAL ANALYSIS; REACTION KINETICS; SIZE; THERMAL ANALYSIS; THERMOCHEMICAL PROCESSES; YIELDS; 014000* - Coal, Lignite, & Peat- Combustion; 010406 - Coal & Coal Products- Pyrolysis & Cracking- (-1987); 010600 - Coal, Lignite, & Peat- Properties & Composition

Citation Formats

Nsakala, N, Patel, R L, and Lao, T C. Combustion characterization of coals for industrial applications. Final technical report, January 1, 1981-May 29, 1985. United States: N. p., 1985. Web. doi:10.2172/5880865.
Nsakala, N, Patel, R L, & Lao, T C. Combustion characterization of coals for industrial applications. Final technical report, January 1, 1981-May 29, 1985. United States. https://doi.org/10.2172/5880865
Nsakala, N, Patel, R L, and Lao, T C. 1985. "Combustion characterization of coals for industrial applications. Final technical report, January 1, 1981-May 29, 1985". United States. https://doi.org/10.2172/5880865. https://www.osti.gov/servlets/purl/5880865.
@article{osti_5880865,
title = {Combustion characterization of coals for industrial applications. Final technical report, January 1, 1981-May 29, 1985},
author = {Nsakala, N and Patel, R L and Lao, T C},
abstractNote = {In-depth fundamental information was obtained from a two-inch inner diameter laminar flow reactor referred to as the Drop Tube Furnace System (DTFS). This information consists of the following: (1) pyrolysis kinetic characteristics of four coals of various rank (Texas lignite, Montana subbituminous, Alabama high volatile bituminous, and Pennsylvania anthracite); and (2) combustion kinetic studies of chars produced from the foregoing parent coals. A number of standard ASTM and special in-house bench scale tests were also performed on the coals and chars prepared therefrom to characterize their physicochemical properties. The pilot scale (500,000 Btu/hr) Controlled Mixing History Furnace (CMHF) was used to determine the effect of staged combustion on NO/sub x/ emissions control from an overall combustion performance of the Alabama high volatile bituminous coal. The quantitative fundamental data developed from this study indicate significant differences in coal/char chemical, physical, and reactivity characteristics, which should be useful to those interested in modeling coal combustion and pyrolysis processes. These results underscore the fact that coal selection is one of the keys governing a successful coal conversion/utilization process. The combustion kinetic information obtained on the high volatile bituminous coal has been used in conjunction with combustion engineering's proprietary mathematical models to predict the combustion performance of this coal in the Controlled Mixing History Furnace. Comparison of the predicted data with the experimental results shows a virtually one-to-one scale-up from the DTFS to the CMHF. These data should provide vital information to designers in the area of carbon burnout and NO/sub x/ reduction for large scale coal utilization applications. 31 refs., 28 figs., 17 tabs.},
doi = {10.2172/5880865},
url = {https://www.osti.gov/biblio/5880865}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Mar 01 00:00:00 EST 1985},
month = {Fri Mar 01 00:00:00 EST 1985}
}