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Wednesday, October 7, 2015

Industrial Applications of Fabric Filters

Fabric filters are used for particulate emission reduction for many industrial applications. Fabric
filters can be designed to collect particles in the submicrometer range with 99.9% control
efficiency. They are occasionally used to remove particles from exhaust air streams generated
by industrial processes where the clean air is recirculated back into the plant to help offset
space heating needs. Fabric filters are used in the power generation, incineration, chemical,
steel, cement, food, pharmaceutical, metal working, aggregate, and carbon black industries.
Shaker, reverse-air, and pulse-jet fabric filters are used in a number of industrial applications
as shown in Table

                       Typical industrial applications for baghouses

Fabric filters have been used for filtering fly ash in fossil-fuel fired boilers, municipal and hazardous
waste incinerators, and a number of other industrial processes. In many industries fabric
filters are becoming as popular as electrostatic precipitators for removing up to 99.9% of
the particulate matter from particulate laden exhaust gas streams. The rapid growth in the use
of fabric filters for particulate control has been aided by EPA's changing the definition of particulate
matter from total particulate matter to that fraction with a mean aerodynamic diameter
of 10 micrometers or less (PM10). This is due to the fact that fabric filters are considered to be
superior collection devices for fine particulate control. Electrostatic precipitators (ESPs) are
also efficient at collecting fine particles.

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