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Show DIAGNOSTIC FIELD MEASUREMENTS IN HIGH TEMPERATURE INDUSTRIAL-SCALE PROCESS EQUIPMENT M.J. Plodincc, R.L. Cook, R. Arunkumar, R.A. Green, L.L. Grcsham, P.R. Jang, J.S. Lindner, J.C. Luthe, M.J. McCarthy, D.M. Miles, D.L. Monts. O.P. Norton, W.P. Okhuysen, J.P. Singh, F.Y. Yueh, and G.A. Zikratov Diagnostic Instrumentation and Analysis Laboratory Mississippi State University Mississippi State, M S 39762-5932, U S A Phone: (601) 325-2105 E-mail: DIAL@DIAL.MsState.Edu Web: http://www.MsState.edu/Dept/DIAL/ ABSTRACT The Diagnostic Instrumentation and Analysis Laboratory (DIAL) is a multi-disciplinary laboratory at Mississippi State University, which has developed specialized instrumentation capable of making on-site measurements on high-temperature industrial-scale combustion systems. Recently at an industrial facility, the team of scientists and engineers at D I A L performed diagnostic measurements, including surface temperature determinations by thermal imaging, multi-wavelength pyrometry, and Fourier-transform infrared (FTIR) spectroscopy; gas temperature determinations using a multi-element thermocouple probe, and spontaneous Raman scattering spectroscopy; gas velocity determinations using laser Doppler velocimetry; and the characterization of combustion species using FTIR spectroscopy. These techniques are described and examples of actual field measurements are presented. INTRODUCTION With the globalization of industrial competition, it has become increasingly necessary to improve operating conditions to improve process performance and maintain competitiveness. Traditionally this has been done in-house by adjusting operating conditions and observing the response. In this way, significant progress has been achieved; however since an industrial process involves the interplay of m a n y physical and chemical components, the process output and hence its efficiency are often correlated in complex ways. A thorough characterization of the facility permits these interactions to be identified and understood. Since its establishment in 1980, the Diagnostic Instrumentation and Analysis Laboratory (DIAL) at Mississippi State University has acquired an international reputation for excellence in the development and field application of diagnostics for high-temperature, industrial-scale facilities.15 D I A L techniques include both well-established methods and new methods developed to address the need for more detailed information. After new techniques have been developed in the laboratory, they are tested under field simulated conditions on DIAL'S combustion test stand or its plasma hearth test stand. Then these instruments are demonstrated in the field. A m o ng the places that D I A L has conducted field (on-site) measurement campaigns are federal and/or commercial facilities located in Alabama, California, Idaho, Illinois, Kentucky, Mississippi, Montana, N e w York, North Carolina South Carolina, Tennessee, and the People's Republic of China. Included among the efforts for industry that are currently in the preparation stage are an effort to individually optimize burners at a coal-fired electric power generating facility, and in collaboration with Argonne National Laboratory and Purdue University, an effort to characterize the performance of glass furnaces. In this paper w e illustrate the utility of these measurements by presenting selected, illustrative data from measurements performed during a week-long, diagnostic field measurement campaign. The goal of this campaign was to characterize an industrial process facility with low-NOx burners along the walls of a rectangular furnace. The furnace has ports at several heights, permitting the interior to be either viewed from the outside or investigated utilizing water-cooled probes. GAS TEMPERATURE MEASUREMENTS Gas temperature is one of the most important parameters in combustion processes. Such measurements provide -1- |