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Coal-gasification instrumentation program (PR 11734). Quarterly progress report, January 1, 1981-March 31, 1981

Published
United States : [publisher not identified], 1981.
Springfield, Va. : National Technical Information Service, [approximately 1981]
Physical Description
microfiche : negative ; 11 x 15 cm

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Summary
In the experimental effort to define the capabilities of infrared absorption spectroscopy for the analysis of coal gasifier product gases, we have continued spectral observations on minority species in the gas phase, and are proceeding with spectroscopic studies of the same materials in cryogenic solution. The progress reported has to do primarily with the characteristics of N/sub 2/O and NO/sub 2/. Coherent anti-Stokes Raman spectroscopy (CARS) is a promising spectroscopic technique for on-line, real-time diagnostics of species concentrations and temperature in the gas streams of coal gasifiers. Our present work is directed toward the development of an appropriate data base for CARS of several constituents of coal-gasifier streams, both separately and mixed, under laboratory conditions of pressures up to 1000 psi and temperatures up to 500 K, with emphasis upon detection of trace concentrations of certain minority species. During this reporting period, we have continued measurements of CARS signals from mixtures containing H/sub 2/S and have completed modification of our experimental configuration to permit normalized CARS and Coherent Stimulated Raman Spectroscopy (CSRS). The aim of our measurements of CARS signals from mixtures containing H/sub 2/S is to determine the detection sensitivity for a field-worthy CARS diagnostic system, with an ultimate goal of 1 ppM. Preparations have been made for the upcoming quantification experiments for LIBS. These are still in progress, since we continued preparatory work by studying time-resolved LIBS, or TRELIBS. This modification of the basic spectral detection technique offers great advantages in sensitivity and diagnostic simplicity.
Report Numbers
DOE/TIC-11447
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: W-7405-ENG-36
OSTI Identifier 6558610
Research organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States).
View MARC record | catkey: 45332996