Filter Type PR-BW 600

3Filtration

High-Performance Debris Filter for Universal Application

The PR-BW 600 is a universally applicable Backwash Filter in the High-PerformanceClass for volume flows of 1,800 to 50,000 m3/h and filter fineness degrees between5 and 9 mm.Based on nearly 30 years of experience in the field of debris filtration of largevolume flows we decided to develop a new filter concept with universal application.Detached from special demands this concept was meant to respond to commonproblems, at the same time offering a high degree of standardization.This filter concept thus impressively meets the general demands for high efficiency,safety, maintenance friendliness and installation possibilities under limited spaceconditions. A product that sets standards with regard to its economy.

Field of Application:

Operation in seawater, brackish water, river water, or other water sources

for the protection from macro fouling of objects installed downstream, such ascondensers and heat exchangers, in open cooling circuits with once-throughcooling or recirculative cooling systems (cooling towers)

for the protection of cooling water circuits of MSF seawater desalination plantsfrom blockage by particle fouling

Filter type PR-BW 600 in a power station

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Filter Design

TAPROGGE Filter type PR-BW 600with actuator

filter housing

filter section

backwash rotor

bearing 1

bearing 2

bypass flap (optional)

differential pressure measuring system

actuator backwash rotor

debris discharge valve with actuator

The design of the PR-BW 600 is basing on the well-proven PR-BW 100 series. Thefilter consists of a filter housing (1) with flanges on both sides that may be installeddirectly in-line, in an existing piping. Firmly mounted in the filter housing is a big,mainly semi-cylindrical filter section (2), without gaps to the upstream and down-stream sides, whose concave side faces the flow side. Arranged on the upstreamside of the filter section is a backwash rotor (3) that, by actuation of the actuator(8), is able to oscillate around the axis formed by the two bearings (4 and 5), thereby covering the filter section.In the inlet area the backwash rotor is shaped as a canal that partially covers thefilter section. The inlet of the canal consists of a permanently elastic packing. Thespecial design of both canal inlet and packing safeguard the pressure-relief (PR = pressure-relieved) during filter backwash (BW = backwash).

A differential pressure measuring system (7) continuously monitors the adjustablebackwash point and initiates the backwash procedure which can additionally bestarted by a timer.

At the outlet opening connected with the backwash rotor a debris discharge valve(9) is fitted that is opened via an actuator only for backwash purposes. As anoption the filter is provided with a bypass flap (6) that opens in the case of overload.The filter is equipped with an SPS control panel that is already prepared for fittingof the TAPROGGE FilterOptimizer. All operational conditions are clearly displayedat the Operator Panel.

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Filter Function

The medium to be filtered enters into the filter housing via the inlet stud, passesthrough the filter section (2) that is designed as a self-supporting, large chamberof concave shape, and leaves the filter through the outlet stud. Particles larger thanthe selected filter fineness accumulate on the filter section. Once a pre-set differentialpressure has been reached, the debris discharge valve opens and the rotor passesover the filter surfaces in both directions.

The pressure differential now prevailing between the filter location and the end ofthe discharge pipe generates a backwash flow (BW = backwash). At the sametime the specially shaped inlet canal of the backwash rotor covers the filter sectionin such a way that the particles to be filtered are relieved from the influx of themedium in this area of the filter section (PR = pressure-relieved). The debris particlesare thus pressure-relieved and can lift themselves off from the filter section whereuponthey are discharged by the backwash flow through the debris discharge pipe.Voluminous coarse particles are sucked off by the backwash flow latest when therotor motion has reached its final position. The speed of rotor rotation can beadapted to local conditions.Upon switching off of the rotor drive the debris discharge valve closes. Filter backwashis thus concluded. The optional bypass flap opens automatically in cases of emergency.

Filter type PR-BW 600in backwash phase

Intake of debris by thefilter section

Filter type PR-BW 600in backwash phase

Backwash rotor in final position(intake of coarse particles)

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The PR-BW 600 Debris Filter is normally installed directly upstream of the heatexchanger to be protected. The backwash process necessitates a pressure drop inthe discharge pipe. Normally the discharge pipe of the filter can be arranged in aby-pass to the heat exchanger and re-fed into the cooling water flow downstreamof the same, as the necessary pressure drop is generally caused by the heatexchanger itself. The backwash water can be discharged atmospherically by making use of the staticoverpressure downstream of the filter. If the pressure differential is insufficient, thebackwash water can also be guided in a pipe via a booster pump.

Installation

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Technical Data

series: PR-BW 600

volume flow: 1,800 - 50,000 m3/h

connecting diameters: DN 800 - DN 2,800

filter fineness degrees: 5 - 9 mm

filter element: perforated stainless steel sheet

material of housing: steel, rubberlined

temperature: max. 80 C

debris discharge capacity: 1.6 ltr/m3 (depending on type of debris)

control: programmable controller

options: safety valve, FilterOptimizer;

Remote Monitoring Service

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Filter type PR-BW 600 in backwash position

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Universal Concept: High Performance + Safety + Economy

High performance with excellent performance ratio Fulfilment of safety-relevant requirements by the use of well-proven concepts of

design and process of the successful TAPROGGE PR-BW 100 filter; optional safety by integrated bypass solution

Option: monitoring of filter operation by Remote Monitoring Service Low backwash flow rates and low pressure loss for minimized operational costs Variable rotor speed enabling adjustment to different debris loads High economic attraction of investment by maximum standardization

Maintenance Friendliness

Extremely simple maintenance: all drives, bearings and sealings easy andaccessible from outside

Compact, flexible Installation

Installation in any position, that means horizontally, vertically, and under anyangle to fit the space conditions of the pipes.

Extremely short overall length creates installation possibilities under restrictedspace conditions, especially for retrofits.

The filter is prefitted for installation of the FilterOptimizer, the intelligent tool forthe optimization of the backwash point.

Technical Features and Benefits

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TAPROGGE Care & Comfort Package

Quality right from the Start

Performance by TAPROGGE as per DIN EN ISO 9001 Safety of design by fulfilling the requirements of the European Pressure Equipment

Directive 97/23/EC Application of a management system for safety, health and environmental

protection (SCC) Standard documentation; documentation upon customers request, respectively The use of extremely corrosion-resistant materials with long lifetimes safeguards

the preservation of the value of investment.

Compatibility by IN-TA-CT Modules

The PR-BW 600 filter is a modular element of IN-TA-CT, our integral principle for the optimization of cooling water circuits.

By combination with a TAPROGGE prescreening system upstream and a TAPROGGEtube cleaning system type D2 downstream, an effective overall solution accordingto IN-TA-CT, our integral system, presents itself for the protection from micro and macro fouling. Without interfaces - and inclusive of the TAPROGGE System Guarantee.

Competence and Experience out of one Hand

Application consultancy, project management, fabrication, installation and commis-sioning of the PR-BW 600 filters are available from TAPROGGE out of one hand.

With more than 12,000 successful applications, TAPROGGE can make use of itsapplication-technological experience in its special field that stands unparalleled theworld over. This plus of competence is indispensable for difficult media and unknowncleaning behaviour.

In addition to that, the cooling water test circuits of TAPROGGEs TechnologicalCentre allow a particularly reliable and cost-efficient simulation of site conditions.

Comprehensive Operator Support by IN-TA-S

By the installation and commissioning of the PR-BW 600 filters, operators haveimmediate access to IN-TA-S.

By IN-TA-S, TAPROGGE takes care of the operator in all questions of operationand maintenance. Scope, duration and frequency of the care can be determined by the operator.

Particularly quick support is available to the users of our Remote Monitoring Service.

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Postal address:

TAPROGGE Gesellschaft mbH58292 WetterGermany

Company address:

TAPROGGE Gesellschaft mbHSchliemannstrae 2-1458300 WetterGermany

Tel.: +49 (0)2335 / 762-0Fax:+49 (0)2335 / 762-245

E-Mail: info@taprogge.deHomepage: http://www.taprogge.de

TAPROGGE Gesellschaft mbH. All rights reserved.TAPROGGE, IN-TA-CT, IN-TA-S and TAPIS are registered trademarks of TAPROGGE Gesellschaft mbH. 00

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