Dust Collector Types and Terms
Dust Collector Types
- are
dust collection filters typically constructed from glass fibers or
fabric.
- are
compact filters that have a much greater surface area than bags, which
increases the airflow, lowers resistance and reduces frequency of cleaning.
- rely
on centrifugal force to remove dust from air.
- filter
dust particles by spinning the air around in its tank. The motion pins
the particles against the walls; they gradually move downward and eventually
end up in the collection bin.
- are
systems that vent from the top and pull fumes and dust up past the
worker's face.
- or
workstations have perforated tabletops and back walls and draw dust
and fumes away from the worker's breathing zone.
- filter
air and remove dust before releasing clean air back into the environment.
- is
the process of filtering air and removing dust.
- collect
dust through ionization. As dust-filled gases move through the system's
positively-charged, grounded electrodes called collection plates, discharge
electrodes give the dust particles a negative charge, which causes
the ionized dust particles to be attracted to and caught by the collection
plates.
- ,
or baghouses, contain filters called fabric bags, which efficiently
trap fine particles of dust, while allowing gases to move through the
collector.
- separate
dust particles from gas by changing the direction of gas streams as
the streams flow through the collector.
- use
a jet-based cleaning cycle.
- can
be moved from place to place.
- use
compressed air to force a burst of air down through the fabric bag
and expand it violently. When the bag reaches its limit, the dust separates
from the bag, and the escaping air carries the dust away from the fabric
surface.
- collect
the product in filter bags as the silo is being filled with material.
The bags are then shaken to return the valuable product to the silo.
- are
small dust collecting systems that contain a fan and either a fabric
collector or a cyclone.
- pull
a continuous stream of air from the environment, removing airborne
dust particles.
- soak
dust-filled gas streams with water and separate the wet dust particles
through varying degrees of pressure drops.
Dust Collector Terms
- The amount of process gas or air entering the fabric collector
(baghouse) divided by the square feet of cloth in the fabric collector.
- Form of pneumoconiosis
caused by the inhalation of asbestos minerals into the lung, resulting
in lung scarring, breathing problems and various forms of cancer.
- Also called "leakthrough,"
it is the ability of particles of dust or fumes to migrate through the
fabric bag.
- Also referred to as "filter
cake," it is the dust buildup occurring on the surface of the filter
medium during filtration that often aids in the filtration process.
- International
professional designation available through training and testing by the
Association of Energy Engineers (AEE).
- Family
of chemicals used as refrigerants, being tightly regulated and phased
out of production due to stratospheric ozone depletion potential. Examples:
R-11, R-12, R-113, R-114, R-115.
- The act of dipping
the filter medium into a solution in order to lubricate the fibers to
reduce self-abrasion.
-
Electrodes in an electrostatic precipitator that attract and collect negatively
charged particles of dust.
- The amount of
dust that the gas or air contains. Concentration is expressed in grains
per cubic foot or pounds per hour.
- Electrodes
in an electrostatic precipitator that negatively charge dust particles.
- Conductors or parts
of a semiconductor that create an electrical connection with nonmetals
or control the movement of electrons.
- Filter in a fabric
collector consisting of woven or felt material such as cotton.
- Toxic particles
that penetrate the lungs, causing lung dysfunction and scar tissue formation.
- The porous barrier
used in the filtration process to separate the particles from the fluid
stream.
- The fabric
collector equipment from inlet flange to outlet flange.
- Cloth wear in
a fabric bag caused by excessive bending.
- A hood-shaped inlet designed
to collect contaminated air and direct it into the exhaust dust system
of a baghouse.
- In dust collecting systems, the area in which the collected
dust is stored.
- Also called "nuisance
dust," it consists of particles of which quartz and other silicates
compose less than one percent.
- Medium- to
large-sized dust particles that do not reach the lower respiratory tract
but remain in the upper respiratory system, nose and throat.
- A device that
sucks up fine particles from fluids like oils and even dry smoke using
a three-phase motor. The inner drum rotates and draws the mist particles
to the center of the drum where they are forced together and eventually
pass through perforations in the drum and back into the machine's
coolant tank, while clean air blows past the motor and back into the outside
environment.
- Centrifugal
separators containing several parallel cyclones that separate dust particles
according to texture.
- Common
high-voltage electrostatic precipitator consisting of flat collection
plates along which discharge electrodes lie.
- Respiratory
ailment caused by excessive inhalation of metallic or mineral dust matter.
Pneumoconiosis also includes diseases such as silicosis and asbestosis.
- Part of electrostatic
precipitator that transfers dust from the collection plates to the hopper.
- Small dust
particles inhaled into the lower regions of the lungs that are responsible
for different types of pneumoconiosis.
- Incurable, potentially
deadly type of pneumoconiosis caused by the inhalation of silica dust
particles, resulting in lung diseases such as emphysema. Silicosis progresses
even after contact with silicates has ceased.
- More or less
consistent wear on the dirty side of the fabric bag cloth.
- Consists of all
dust particles, whether respirable or inhalable.
- High-voltage
electrostatic precipitators consisting of cylindrical collection plates
that rotate around the discharge electrodes.
- Part of an
electrostatic precipitator that transfers dust from the collection plates
to the hopper.