Measuring chlorinated hydrocarbons in combustion using FTIR spectroscopy

Conference · Sun Oct 01 04:00:00 EDT 1989

OSTI ID:7072202

Lucas, D.; Taga, K. ^[1]; Hall, M. J.; Koshland, C. P. ^[2]

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1. Lawrence Berkeley Lab., CA (USA)
2. California Univ., Berkeley, CA (USA)

We have recently begun a study of the thermal destruction of toxic wastes. One of the goals of the project is to develop methods for the measurement of species important in the combustion of chlorinated hydrocarbons. We are investigating the use of infrared absorption spectroscopy for this purpose, with emphasis on Fourier-transform infrared spectroscopy (FTIR) coupled with long path length cells. This combination should permit the simultaneous quantitative determination of a large number of compounds, in particular simple C{sub 1} and C{sub 2} chlorinated hydrocarbons. We have obtained infrared spectra for a number of chlorinated species, and for the expected products of their pyrolysis and oxidation. We have determined effects of resolution, pressure, temperature, and gas composition on the resulting spectra, and have determined sensitivity limits, pressure broadening, and instrument linearity for several species. Spectra of products from our combustion driven flow reactor have also been measured. Samples are withdrawn through stainless steel probes and transferred to the long path cell maintained at 100 torr to prevent water condensation. Ethyl chloride (C{sub 2}H{sub 5}Cl) is injected into the products of a premixed propane-air flame through four quartz injectors. In a separate experiment we have determined that less than 5% of the ethyl chloride reacts in the injectors before mixing with the hot products. 25 figs., 4 tabs.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7072202
• Report Number(s): LBL-27911; CONF-8910289--5; ON: DE90007407
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ABSORPTION
CHEMICAL REACTIONS
CHEMICAL WASTES
CHLORINATED ALIPHATIC HYDROCARBONS
COMBUSTION
DECOMPOSITION
HALOGENATED ALIPHATIC HYDROCARBONS
INCINERATORS
INFRARED SPECTRA
MEASURING METHODS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDATION
PYROLYSIS
SPECTRA
THERMOCHEMICAL PROCESSES
WASTES