Open AccessCombustion characterization of coal fines recovered from the handling plant. Quarterly technical progress report No. 8, July 1, 1996-- September 30, 1996
Author(s) -
H Masudi,
S R Samudrala,
L Chenevert,
C Cornelius
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/428647
Subject(s) - combustion , combustor , coal , waste management , environmental science , residence time (fluid dynamics) , chemistry , engineering , organic chemistry , geotechnical engineering
Combustion tests were conducted to determine the range of secondary air swirl required to maintain a stable combustion flame. Results obtained during the flame stability testing shows no significant effect of swirl settings on NO{sub x}, SO{sub 2} and CO{sub 2} for three combustion tests(834,330 Btu/hr, 669,488 Btu/hr, 508,215 Btu/hr). At each of the two higher firing rates, combustion was relatively complete regardless of swirl settings, therefore, burner settings may be adjusted to provide a visually stable flame without concern for higher carbon in ash as a function of burner settings. The parameters affecting flame stability are mainly coal particle size, volatile matter, ash content and excess air. tests conducted at three different locations (Top, Middle, Bottom) revealed that the gaseous concentrations such as NO{sub x}, SO{sub 2} and CO{sub 2} were a function of residence time for each of the firing rates