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Diagnostics for characterization of combustion products and heavy metal emissions

Posted on:1995-01-03Degree:Ph.DType:Dissertation
University:Mississippi State UniversityCandidate:Zhang, HanshengFull Text:PDF
GTID:1462390014489387Subject:Physics
Abstract/Summary:
Seeking a more efficient coal combustion system that produces less pollution is an important task. The purpose of this research is to evaluate the on-line diagnostic techniques to monitor the efficiency and the metal material in a coal combustion system.;For a combustion process, the stoichiometry ;Aside from coal combustion efficiency, knowledge of the composition of entrained coal and mineral matter particles in the reaction's combustion stream is also important for minimizing the environmental impact of coal combustion driven facilities. To understand the presence, transport, and deposition of the trace pollutants, such as metals and metallic oxides within the combustion system and to control the consequential release of toxic material into the environment, the on-line detection of these species is desired.;The present project will study the use of Fourier transform infrared (FTIR) spectroscopy and laser induced breakdown spectroscopy (LIBS) as two on-line diagnostic methods for coal combustion. FTIR absorption and emission spectra measurements have been conducted on a 500 kW MHD simulation facility. The analysis of these spectra results in ;This study has indicated that Fourier transform infrared (FTIR) spectroscopy and laser induced breakdown spectroscopy (LIBS) are powerful on-line techniques for coal combustion diagnostics.
Keywords/Search Tags:Combustion, FTIR, On-line, Spectroscopy
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