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High Efficiency
Mist Eliminator for Rolling Mills
The Busch PPS / DBF 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 sprays and surface boiling
followed by condensation. For this
reason, size and character of liquid
particulate vary greatly.
 A multiplicity of coolants and
rolling methods mandate the use
of multiple stages to achieve the
lowest maintenance and highest
possible collection efficiency.
The PPS / DBF Unit employs cleanable
media, disposable media or a combination
of both.
The PPS / DBF eliminator mechanically
removes and drains liquid particulate
using several mechanisms. Mists
are removed by inertial impaction,
direct interception and Brownian
capture depending on the droplet
diameter and liquid density. The
PPS / DBF Unit provides removal
of liquid particulate down to 0.3
micron. When vapor phase emission
control is not required, the PPS/DBF
mist eliminator offers maximum
collection efficiency and lowest
opacity.
The PPS / DBF 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 / DBF Unit includes
heavy structural base, sloped
steel floor plate with multiple
drain ports, reinforced housing
and inspection and maintenance
access panels. Critical welds are
kerosene and chalk tested to detect
pinhole leaks. If lighting is present,
electrical wiring is in rigid,
liquid-tight conduit in accordance
with the plantís electrical
standards. |
Busch
PPS / DBFl