Experiments on Pulverized Coal Combustion Under Conditions Simulating a Blast Furnace Environment

Update Item Information
Title Experiments on Pulverized Coal Combustion Under Conditions Simulating a Blast Furnace Environment
Creator Bortz, Steven; Flament, Gerard
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1982
Spatial Coverage presented at Newport Beach, California
Abstract Combustion of pulverized coal under conditions simulating injection into a blast furnace was studied. Four coals were tested and the effects of coal flow rate, blast temperatures from 900°C to 1200°C, coal fineness, injection position and momentum, on the combustion of these coals were characterized through visualization and measurements. The performance of the coals was very dependent on the coal rank. The other parameters, particularly coal flow rate, also had a strong influence on the combustion rate. Indications are that the early combustion (< 10 ms) is determined by the devolatilization process with total volatile yields significantly in excess of the proximate analysis being measured for the bituminous coals. The combustion of the expelled volatile matter was found to be mixing limited, leading to soot formation. This problem was amplified with a high coal rate. The trial results indicate that the optimum method of achieving a high burnout level with pulverized coal in the raceway zone of a blast furnace, particularly with the current injection system, is through a judicious selection of coal type and coal rate.
Type Text
Format application/pdf
Language eng
Rights This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician Cliodhna Davis
ARK ark:/87278/s6x92dtg
Setname uu_afrc
ID 3252
Reference URL https://collections.lib.utah.edu/ark:/87278/s6x92dtg