Filter Type PR-BW 600

Filtration 3 2

High-Performance Debris Filter for Universal Application

The PR-BW 600 is a universally applicable Backwash Filter in the High-Performance Class for volume flows of 1,800 to 50,000 m3/h and filter fineness degrees between 5 and 9 mm. Based on nearly 30 years of experience in the field of debris filtration of large volume flows we decided to develop a new filter concept with universal application. Detached from special demands this concept was meant to respond to common problems, 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 space conditions. 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 of objects installed downstream, such as condensers and heat exchangers, in open cooling circuits with once-through cooling or recirculative cooling systems (cooling towers) • for the protection of cooling water circuits of MSF seawater plants from blockage by particle fouling

Filter type PR-BW 600 in a power station 3

Filter Design

The design of the PR-BW 600 is basing on the well-proven PR-BW 100 series. The filter consists of a filter housing (1) with flanges on both sides that may be installed directly 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 upstream side 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 the filter section. The inlet of the canal consists of a permanently elastic packing. The special 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 adjustable backwash point and initiates the backwash procedure which can additionally be started 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 an option 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 fitting of the TAPROGGE FilterOptimizer. All operational conditions are clearly displayed at the Operator Panel.

1 TAPROGGE Filter type PR-BW 600 with actuator

1 filter housing 6 2 filter section 3 backwash rotor 8 2 4 bearing 1 4 3 5 bearing 2 6 bypass flap (optional) 5 7 differential pressure measuring system 9 8 actuator backwash rotor 9 debris discharge valve with actuator 7 4

Filter Function

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

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

Filter type PR-BW 600 in backwash phase

Intake of debris by the filter section

Filter type PR-BW 600 in backwash phase

Backwash rotor in final position (intake of coarse particles) 5

Installation

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

Filter type PR-BW 600 in backwash position

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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 6

Technical Features and Benefits

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 and accessible from outside

Compact, flexible Installation

• Installation in any position, that means horizontally, vertically, and under any angle to fit the space conditions of the pipes. • Extremely short overall length creates installation possibilities under restricted space conditions, especially for retrofits. • The filter is prefitted for installation of the FilterOptimizer, the intelligent tool for the optimization of the backwash point. 7

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 customer’s 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 TAPROGGE system type D2 downstream, an effective overall solution according to 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 its application-technological experience in its special field that stands unparalleled the world over. This plus of competence is indispensable for difficult media and unknown cleaning behaviour. • In addition to that, the cooling water test circuits of TAPROGGE’s Technological Centre 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 have immediate access to IN-TA-S®. • By IN-TA-S®, TAPROGGE takes care of the operator in all questions of operation and 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. Postal address: TAPROGGE Gesellschaft mbH 58292 Wetter Germany

Company address: TAPROGGE Gesellschaft mbH Schliemannstraße 2-14 58300 Wetter Germany

Tel.: +49 (0)2335 / 762-0 Fax:+49 (0)2335 / 762-245 © TAPROGGE Gesellschaft mbH. All rights reserved. TAPROGGE®, IN-TA-CT®, IN-TA-S® and TAPIS® are E-Mail: [email protected] registered trademarks of TAPROGGE Gesellschaft mbH. Homepage: http://www.taprogge.de 0019-400301-01-400301-02