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Low Maintenance
Mist Eliminator for Rolling Mills
For control of fine liquid particulate
The BUSCH PPS Unit was developed
specifically to meet the increasingly
stringent VOC or PM-10 environmental
regulations for metal rolling operations.
The quantity and particle size
of liquid mist generated from rolling
mills are a function of many variables
including coolant type, coolant
flow rate, metal temperature, strip
speeds and saturation dew point.Rolling
mills have several mist generation
mechanisms such as hydraulic pressure
spray sand surface boiling followed
by condensation. For this reason,
the size and character ofliquid
particulate varies greatly.
A multiplicity of coolants and
rolling methods mandate the use
of multiple stages to achieve low
maintenance, low pressure drop
and high collection efficiency.
The PPS Unit employs cleanable
media, disposable media or a combination
of both.
 The PPS eliminator mechanically
removes and drains liquid particulate
using several mechanisms. Mists
are removed by inertial impaction,
direct interception and, to a lesser
extent, Brownian capture depending
on the droplet diameter and liquid
density. The PPS Unit provides
removal of liquid particulate down
to 1.0 micron. When vapor phase
emission control is not required,
the PPS mist eliminator offers
excellent collectionefficiency
at low operating pressure drops.
The PPS Unit is custom designed
to suit each system requirement.
Capacity, Unit arrangement and
dimensions, number of eliminator
stages, location and sizes of duct
connections and materials of construction
can be varied to assure proper
installation and operation.
Construction
of the PPS Unit includes a heavy
structural base, sloped steel
floor plate with multiple drain
ports and reinforced housing,
inspection and maintenance access
panels.Critical welds are kerosene
and chalk tested to detect pinhole
leaks. If lighting is required,electrical
wiring is in rigid, liquid-tight
conduit in accordance with the
plantís electrical standards. |
Busch
PPS