Method and apparatus for monitoring particulate mass concentration of emissions from stationary sources

Patent · Tue Oct 21 04:00:00 EDT 1980

OSTI ID:6852102

Uthe, E E

Method and apparatus for monitoring particulate mass concentration of emissions, such as fly ash, from a stationary source are disclosed which employ a single-wavelength infrared transmissometer. Emissions from a source, such as a fossil fueled power plant, generally contain particles of known material of a wide range of sizes. Often the particle size distribution varies during emission. In accordance with the present invention a single-wavelength transmissometer is employed which operates at a wavelength at which the extinction-to-mass concentration ratio as a function of particle size is substantially constant. Consequently, the transmissometer output provides a measure of the mass concentration of particulate material emitted from the source independent of the size of the particles. Logarithmic amplification of the transmissometer detector output provides a direct measure of the mass concentration.

• Assignee: SRI International
• Patent Number(s): US 4229653
• OSTI ID: 6852102
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AEROSOL MONITORING
AEROSOL WASTES
FLUE GAS
FLY ASH
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
MEASURING INSTRUMENTS
MONITORING
PARTICLES
PHOTOMETERS
POWER PLANTS
THERMAL POWER PLANTS
WASTES