Measurement and characterization of filtration efficiencies for prefilter materials used in aerosol filtration

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6006580

Sciortino, J ^[1]

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1. State Univ. Coll., Fredonia, NY (USA)

In applications where the filtration of large quantities of mixed (liquid and solid) aerosols is desired, a multistage filtration system is often employed. This system consists of a prefilter, a High Efficiency Particulate Air (HEPA) filter, and any number of specialized filters particular to the filtration application. The prefilter removes liquids and any large particles from the air stream, keeping them from prematurely loading the HEPA filter downstream. The HEPA filter eliminates 99.97% of all particulates in the aerosol. The specialized filters downstream of the HEPA filter can be used to remove organic volatiles or other vapors. While the properties of HEPA filters have been extensively investigated, literature characterizing the prefilter is scarce. The purpose of this report is to characterize the efficiency of the prefilter as a function of particle size, nature of the particle (solid or liquid), and the gas flow rate across the face of the prefilter. 1 ref., 4 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6006580
• Report Number(s): ANL/CP-72646; CONF-9103136--4; ON: DE91010761
• Country of Publication: United States
• Language: English

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AEROSOLS
AIR CLEANING SYSTEMS
AIR FILTERS
CLEANING
COLLOIDS
CONTROL SYSTEMS
DESIGN
DISPERSIONS
EFFICIENCY
EMISSION SPECTROSCOPY
ENGINEERED SAFETY SYSTEMS
EQUIPMENT
FILTERS
FILTRATION
FLOW RATE
FLUID FLOW
FLUORESCENCE SPECTROSCOPY
FLUORIMETERS
FLUORINATED ALIPHATIC HYDROCARBONS
GAS FLOW
HALOGENATED ALIPHATIC HYDROCARBONS
MATERIALS
MATTER
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NUCLEAR FACILITIES
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
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PARTICLE SIZE
PARTICLES
PARTICULATES
PETROCHEMICALS
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PLASTICS
POLLUTION CONTROL EQUIPMENT
POLY
POLYETHYLENES
POLYTETRAFLUOROETHYLENE
REACTOR COMPONENTS
SEPARATION PROCESSES
SIZE
SOLS
SPECTROSCOPY
SYNTHETIC MATERIALS
TEFLON
VOLATILE MATTER
WASHING