Highly Versatile Liquid Feed & Fluid Handling Solutions For Pulp & Paper Operations0 pages

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Highly Versatile Liquid Feed & Fluid Handling

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Solutions For Pulp & Paper Operations

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Gregg E. Johnson, Thermo Fisher Scientific, Fluid Handling, Barrington, IL, USA.

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Pulp Sc paper operations continuously

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handle abrasive slurries and highly

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aggressive chemicals - and this creates

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huge demands on pumping systems.

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The recovery of back liquor soap, for

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example, contains particulate matter,

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is abrasive, hot, and entrained gases

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can cause seal failure in certain pump

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designs. Lime slurries used to produce

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bleach liquor can easily settle out and

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clog valves. In addition, maintaining

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precise, consistent, repeatable flow

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rates often present major challenges

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for the metering of dyes, sizing agents,

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retention aids, and other chemicals.

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Solution:

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Thermo Scientific Masterflex® and

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Ponndorf peristaltic pumps are

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impervious to highly abrasive fluids

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and gentle on shear-sensitive materials.

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Handling tough, viscous slurries are

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never a problem due to the pump's high

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suction lift capabilities. Plus, there are

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no glands, valves, or seals to become

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clogged or wear out. Masterflex and

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Ponndorf pumps can also run dry. And,

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unlike many pump designs used in pulp

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8c paper processes, Masterflex pumps

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maintain a precise, constant flow rate

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with excellent repeatability - providing

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volumetric accuracies of ± 0.5% of

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liquid volume, or better.

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Benefits:

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Masterflex pumps provide pulp and

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paper operations with extremely

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versatile liquid chemical feed and fluid

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handling solutions with the highest

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reliability, volumetric accuracy, and

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long-term operation - plus simple, low

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maintenance. Masterflex and Ponndorf

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peristaltic pump systems are ideal

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for handling virtually any chemical,

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slurry, and additive at pulp and paper

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operations. The only material the fluid

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touches is the inside of the tubing, and

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since no other parts of the pump ever

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f mum

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. îbtmr

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contact the solution, only the tubing

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ever needs to be cleaned or changed -

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a very quick and simple procedure.

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Highly versatile liquid feed & fluid

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handling solutions

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Masterflex and Ponndorf peristaltic

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pumps are the ideal solution for

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efficiently carrying out the demanding

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bulk transfer and chemical metering

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applications of pulp 8c paper

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manufacturers. Aggressive materials

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— such as phosphoric acid, soda

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Ponndorf peristaltic pumps are ideal for

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handling virtually any chemical, slurry,

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and additive at pumps and paper opera-

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tions.

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ash and sodium nitrate solution, or

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Kaolin and clays containing latex and

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abrasive silica — can lead to defective

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valves and premature pump wear on

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other pump types. With Masterflex

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and Ponndorf pumps, however, these

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materials remain inside the pump's

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hose or tubing at all times and cannot

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contaminate and damage the pump

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or meter. The pump's non-intrusive

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design provides a straight flow path

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with no dead flow areas for slurry to

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agglomerate, harden, and contaminate

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the process. Flow rates are accurate up

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to ±0.5%.

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Masterflex and Ponndorf pumps

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are innovative, cost-effective peristaltic

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pumping systems which exhibit low

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shear force, so it's gentle on polymers

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and shear-sensitive slurries, and its

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variable speed operation allows for

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precise control of flow or pressure over

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a wide operating range to maintain

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process integrity.

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For metering process sensitive

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materials, such as dyes, optical

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brightening agents, and retention

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aids, Masterflex pumps provide

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KeyWords

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• Peristaltic Pumps

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• Tubing Pumps

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• Pump Heads

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• Tubing

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• Black Liquor

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• Lime Slurry

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• Bleach Liquor

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• Kaolin

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• Shear

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