ProMinent ProMix Series, Руководство по эксплуатации, Страница: 4 / 68

Pr o Minent ProMix
‘DB' & 'PB’ Polymer Feeder
ProMix Series MA Batch/Inline User Manual
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i. Overview:
The ProMix M Polymer Feeder is a skid system designed to control feed water and polymer and
combine them to produce a high quality solution. The system is designed to receive liquid neat polymer
while mixing it with feed water to produce and discharge a quality solution from the system.
Research in the science of polymer activation indicates that the activation energy must decrease as the
polymeric chain is uncoiled to prevent rupture and hence decrease the performance of the product.
The mixing by the Polymer Feeder is accomplished
mechanically with three distinct mixing zones separated
by baffles. The first zone consists of a fast mixing blade
that delivers high shear at the precise point of polymer
injection, creating an immediate dispersion before
agglomeration takes place. The second zone mixing
blade induces a vortex and draws solution down through
the center of the chamber from zone one and forces the
solution outward to the sides and then down into zone 3.
Finally, the third zone mixing blade gently agitates/blends
the active polymer solution before it exits the chamber through the bottom of the discharge tube.
The ProMix M Polymer Feeder controller permits two main methods of operation. These modes and
their respective configurations are selected using either the keypad or the Ethernet connection to a
laptop. T
he first mode of operation is the ‘Batch’ mode which uses a % concentration setpoint defined
as the ratio of polymer to dilution water by volume. The second basic operation mode is ‘Inline’ which
requires the user to calculate and manually adjust the desired polymer pump rate based upon the
process requirements. In either mode the type of polymer must be selected: emulsion or Mannich.
On/off operation in either mode can be controlled remotely via a customer permissive contact.
In the ‘Inline’ mode the System Start switch on the front door of the controller can be placed in the ON
position to immediately enable the controller or in the REMOTE position to require a remote dry contact
as a start permissive. Placing this switch in the OFF position after having been in either of the other
two positions will initiate a flush cycle before shutting down. The Polymer Pump switch on the
controller front door has two positions to choose the source of the pump control signal. In the LOCAL
position the controller uses the keypad entry for polymer pump rate. In the REMOTE position the user
generated 4-20 mA signal represents 0
– 100% pump speed. The user must manually adjust the
primary and post dilution valves for the desired dilution water flow rate. The pump rate must also be
manually entered to achieve the desired polymer concentration.
In the ‘Batch’ mode the same operations apply for the two selectable switches on the front controller
door. However instead of pump speed the ProMix Batch mode setpoint is % concentration. The user
can manually adjust the incoming dilution water flow for the desired flow rates. Thereafter, the
controller adjusts the polymer pump speed automatically to maintain the % setpoint concentration
based on dilution water flow. The controller maximum input values are up to 1% concentration in the
mixing chamber for emulsion polymers and up to 10% for Mannich polymers.