Optical instrumentation for on-line analysis of chemical processes

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6533072

Hartford, A Jr; Cremers, D A; Loree, T R; Quigley, G P

Optical diagnostics provide the capability for nonintrusive, on-line, real time analysis of chemical process streams. Several laser-based methods for monitoring fossil energy processes have been evaluated. Among the instrumentation techniques which appear quite promising are coherent anti-Stokes Raman spectroscopy (CARS), laser-induced breakdown spectroscopy (LIBS), and synchronous detection of laser-induced fluorescence (SDLIF). A CARS diagnostic was implemented on a coal gasifier and was successfully employed to measure species concentrations and temperatures within the process stream. The LIBS approach has been used to identify total trace impurities (e.g., Na, K, and S) within a gasifier. Recently, individual components in mixtures of aromatics hydrocarbons have been resolved via the synchronous detection of laser-induced fluorescence. 9 figures.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6533072
• Report Number(s): LA-UR-83-409; CONF-830420-2; ON: DE83007557
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
COAL GASIFICATION PLANTS
DIAGNOSTIC TECHNIQUES
DISPERSIONS
DYE LASERS
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
INDUSTRIAL PLANTS
LASER SPECTROSCOPY
LASERS
LIQUID LASERS
MIXTURES
MONITORING
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
PROCESS SOLUTIONS
RAMAN SPECTROSCOPY
REAL TIME SYSTEMS
SOLUTIONS
SPECTROSCOPY
TRACE AMOUNTS