Goulds 3500XDMedium Consistency Pumping Technology

Introducing X-Ducer™Medium ConsistencyPumping Technology

Model 3500XD

The Goulds X-Ducer™Performance Advantage:� Improved Pumping Efficiencies

• An increase of up to 8 efficiency points whichtranslates into substantial energy savings

• Performance which exceeds or rivals all competitors

� Expanded Coverage• Higher TDH generation for existing sizes• New, larger size to handle production rates to 2200

ADStpd (2000 ADMtpd) and heads to 650 feet (198 m)

� Dramatic Degas System Improvements• Allows for operation up to 10-11% consistency without

a vacuum pump

� Lower Suction Head Requirements• Allows for lower, less expensive standpipe elevations

and higher operating temperatures

� Existing Units Readily Converted to the X-Ducer Design

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Model 3500XD Advantages

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Advantage

High Efficiency

Simplicity of Design

Superior Reliabilityand Flexibility ofExternal Degas System

Control Scheme

Continued NewTechnologyand Development

Benefit

� Lower power requirements

� X-Ducer design can permitupgrades with minimal investment

� Proven reliability

� Familiar to operating andmaintenance personnel dueto design — components andmethods similar to conventionalcentrifugal pumps

� When required, maintenanceis easy to perform

� Easy to maintain externalvacuum pump

� X-Ducer design further simplifiesthe degas system for consistencyranges up to 10-11% by notrequiring a vacuum pump

� Avoids assembly techniquesneeded to achieve close clearancesfor proper internal degas operation

� Same back pull-out assemblyregardless of type of degas system

� Simple level control scheme orflow control scheme when required

� Readily adapted to variablespeed operation

� Effective response to processchanges and upsets

� X-Ducer design allows foroperation up to 10-11%consistency without avacuum pump

� Higher TDH generation withthe X-Ducer design

� New size now available forhigher production rates and highhead requirements such as O2Delignification Reactor Feed service

3500XD (Front View)

Back Pullout with X-Ducer

Model 3500XDAir Removal System

Model 3500XD

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Without effective air removal, medium consistencypumps will not operate reliably.

The efficient air removal system of the Model 3500XDand the simple degas system result in easy operationand very low maintenance.

X-Ducer agitates pulp to assist flow into pump inlet. X-Ducer also separates airfrom water and fiber.

X-Ducer utilizes conventional technology to concentrate air in core and prepareit for removal. Fiber and water move to the periphery of the X-Ducer, then ispicked up by the impeller vanes. The air is concentrated near the center of theX-Ducer and is removed through the air extraction holes in the impeller.Using previous technology from inducers, sufficient pressure is generated toallow air to be removed for operation at pulp consistencies up to at least 10%.

Fiber and water suspension are subjected to pumping action by impeller vanes.Modified concentric casing allows for operation over wide flow range.

Air and water, plus a small amount of residual fiber, pass through impeller airextraction holes.

The large pump-out vanes pump the fiber and water to the periphery ofthe impeller.

Air with water is extracted across the top surface of the patented (USPatent#5,087,171) secondary air separation removal device into the vacuumsystem. This device permits separation of any remaining fiber which may bepresent at this point. Fiber pull through the vacuum system is virtually eliminated.

The air and water from the degas system is discharged to drain or returned tothe standpipe. Depending on the service conditions and design pulp consistency,a vacuum pump may not be needed.

X-Ducer Initiates Flowand Begins Air Separation

X-Ducer concentrates aircore and developspumping action

Fiber and water arepumped by impeller vanes

Pumping action anddegas system moves air,water and fiber throughextraction holes in impeller

Fiber and water pumpedto impeller periphery

Air with water is extractedpast secondary airseparation device

Air and water are removedthrough degas system

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Model 3500XD

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Proven Goulds Applications

Pumping Solutions

Pumping fromWashers, Pressesand Disc FiltersPulp at consistencies up to14% from different washertypes feed into Gouldsstandpipes to be pumpedto the next operation.

Eop Stage PumpingPumping through an O2 mixer into aretention tube and extraction tower.Back pressure may be applied at thetop of the upflow retention tube.Hydrogen peroxide and caustic mayalso be added at the pump suction.

D Stage Feed Pumping Pumping from a standpipe to atitanium ClO2 mixer and feeding the chlorine dioxide tower.

High Density TowerPumping to a HD tower with aconventional standpipe unit or pumpingfrom a HD tower with a tower bottominstallation. Pumping to multiple HDtowers is also possible. Long distancesmay require booster units.

O2 Delignification ReactorPumping from a standpipe to an O2

mixer adding oxygen before thereaction tower. Steam can also beadded to elevate the stocktemperatures to the required levels.

Extensive worldwide installations operate reliably on services in pulpingand bleaching operations. These successful installations result from:

1. Defining Requirements Understanding and defining the requirements for operation — operating data parameters, piping layouts and knowledge of related equipment(washers, mixers and system components)

2. Designing Systems Designing systems to meet the operating criteria

3. Commissioning Commissioning the systems when required by the users

Model 3500XDModel 3500XD

LABYRINTH SEALS STANDARDFrame is sealed with labyrinth seals toprotect against the harsh environmentsencountered in pulp mills and bleach plants.

BEARINGS• Thrust bearing is angular contact

PumpPac® designed to handleuni-directional thrust loads.

• Radial bearing is cylindrical roller designto handle radial loads.

• Bearings are designed for a 14-yearaverage life based on maximum loads.

LUBRICATIONFlood oil is standard with cooling coilin sump.

DEGASIFICATION NOZZLERemoves air to vacuum system.

RENEWABLE SIDEPLATE• Easily and economically replaced

for extended casing life.

• Sealed from pumpage.

DOUBLE CARTRIDGEMECHANICAL SEALS• For optimum sealing over full range

of operating conditions.

• Seals from various manufacturersare available.

CASING• Centerline discharge.

• Modified concentric design is keyto efficient air removal and allowsa wide operating range.

• Readily adapted to horizontal design

IMPELLER• Open impeller with full back shroud.

• Easily adjustable close frontclearance to maintain high pumpefficiency.

• Large air extraction holes toremove air.

• Step cut design to optimize airseparation and fiber retention.

SECONDARY AIRSEPARATION DEVICE• Patented design (U.S. patent

#5,087,171).

• Assists in minimizing or eliminatingfiber pull through vacuum system.

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Medium ConsistencyPumping SolutionsHeavy-Duty Design

X-DUCER• Cast X-Ducer assists stock entry to pump.

• Constant pitch, hollow X-Ducer improves air removal.

• For pulp consistencies up to 10-11%, a vacuum pumpis not required for effective degas operation.

• Allows for more efficient pump operation.

• Secured to shaft with heavy-duty shaft nut.

• Derived from existing inducer technology withmodifications for medium consistency pulp services.

Model 3500XD

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System Configurations

Standpipe Arrangementwith CIO2 MixingStock from washers, presses and thickeners feed special Gouldsstandpipes that are reverse tapered to prevent stock bridging.Systems include controls for vacuum, dilution, level and flow.

Tower Bottom ArrangementStock from bleach/storage towers falls intoGoulds feed chute connected to the towerwith expansion joint and isolation valve.Depending on tower level and consistency,a vacuum pump may not be required.

Booster ArrangementGoulds booster pump will increase pressurebut does not require standpipe or degassing system.

Model 3500XD

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Standard System Controls, Alarms & Interlocks

DCV-2

DCV-1

MODEL3500XD

LCVI/P

I/P

LT LC

DCV-1 UPPER DILUTION VALVEDCV-2 LOWER DILUTION VALVELCV LEVEL CONTROL VALVELT LEVEL TRANSMITTERLC LEVEL CONTROLLERI/P SIGNAL CONVERTER

STANDPIPE

LT

PI

LCV

I/P

STANDPIPEMODEL3500XD

LS

LCV

STOCK OUT

OPTIONAL FLUSHBY CUSTOMER

ARV

VR VACUUMPUMP

SEWER OR RETURNTO STANDPIPE

LCV LEVEL CONTROL VALVE

LT LEVEL TRANSMITTER

LC LEVEL CONTROLLER

I/P SIGNAL CONVERTER

LS LIMIT SWITCH

ARV AIR REMOVAL VALVE

VR VACUUM RELIEF VALVE

PI COMPOUND PRESSURE GAUGE

• Constant standpipe level maintained by LCcontrolling LCV on pump discharge.

• Alarms set at 85% and 10% level.

• Start up Interlock at minimum of 10% levelto prevent dry running of pump.

• Automatic dilution system to assist pumpingwhen standpipe level deviates outside itsallowable set point range.

Seal & Flush Water System

• Three separate flow meters control flow to:– Mechanical seal & bearing cooling coil– Vacuum pump make up– Degas chamber

• An Alarm sounds if the flow rate dropsbelow 50% of the required value.

• An Interlock keeps the pump fromstarting up without minimum seal andflush water flow.

• Vacuum pump operates whenModel 3500XD operates.

• ARV is open when LCV is open.

• An Alarm will sound if the vacuum pumpshuts down.

• Closing ARV can isolate air removal system.

• For applications limited to 10-11% consistencythe vacuum pump is not required.

– Unit will use an ARV to prevent waterin standpipe from draining

– When in operation ARV will be open anddegas line will vent to drain or air separator.

Standpipe Level/Dilution System

Degas System

VACUUM PUMP

MECHANICAL SEAL FLUSH

ALARM

FRAME COOLING OUT TO

MECHANICAL SEAL IN

DEGASCHAMBER(STUFFING BOX COVER)

1/2" FLUSH WATER INLET(CUSTOMER CONNECTION)FRAME COOLING IN

Model 3500XD

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Caustic stage pumpingfrom washer operating at1200 TPD at 12% consistency.One of seven units incomplete bleach line.

Bleached pulp from finalwash stage being pumped toHD storage.

Pumping Solutions

Typical Model 3500XD Installations

Model 3500XD

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Hydraulic Coverage

700

0

0

500 1000

500400300200100 600 700 800

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300

200

1000

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500 1000 1500

1500500 1000 2000 2500 3000

2000

CAPACITY

GPM

ADSTPD AT 12%

ADMTPD AT 12%

m3/hr

l/s

2500 3000 3500 4000

50

75

100

125

150

175

TOTA

L H

EAD

– M

ETER

S

3x6–14XD 6x10–18

6x10–22HXD

4x8–18HXD

4x8–24XD 6x12–24XD

TOTA

L H

EAD

– F

EET

200

1500 2000 2500

20 40 60 80 100 120 140 160 180 200 220

� Reduced power requirements for existing systems

� Increased TDH capabilities with X-Ducer designfor new operating conditions

� Existing units readily modified to X-Ducer design— does not require new casing or suctionsideplate and fits in current dimensional envelope

� For existing systems operating at 10% consistencyor less can allow removal of vacuum pump

� Can adapt to new and future operatingconditions with minimal changes and lowerpower requirements

Pumping Solutions — Upgrade Existing SystemsModel 3500XD System Upgrade Opportunities

PRO Services®

ExtendingEquipment Life...

Product Repair (all types and brands of rotating equipment)

• Service Center Repair

• Field Service

• Parts Supply

Reliability Improvement• Inventory Management

• Replacement/Exchange

• Turnkey Repair/Installation

• Training

Optimization of Assets• Predictive Analysis/Condition Monitoring

• Root Cause Failure Analysis

• Pump & System Assessments

• Upgrades – Mechanical & Hydraulic

• Maintenance Management/Contract Maintenance

• Technical Expertise

• Factory TrainedService Personnel

• Quality

• Fast Turnaround

• Emergency Service –24 hours/day, 7 days/week

• ISO and Safety Certified

ProSmart™ encompasses the latest technology*in condition monitoring to transform yourPredictive Maintenance program into a PlantProfitability program. It provides a cost-effectivesolution to maintaining uptime on all of your rotatingequipment. ProSmart continuously monitors,analyzes and annunciates an alarm when criticalcriteria is not met. By identifying, diagnosing, andsounding an alert to potential equipment problems before they havea chance to manifest into unexpected downtime or catastrophic failure,ProSmart helps to assure plant profitability.

ProSmart delivers benefits that go rightto the bottom line.

• Extends equipment life

• Optimizes costly “walk arounds” byskilled personnel

• Can help reduce overall equipment failures and the cost of downtime

• Sends alerts prior to potential catastrophic process failures

• Automatically alerts personnel to machine problems

• Consolidates data for equipment optimization(*Patent pending)

ProSmart is a wireless machinery monitoring system that collects andanalyzes operating data automatically every 5 seconds. Integratedanalysis capabilities provide enhanced data and reporting functions.

• Energy savings

• Provides for pump protection

• Low flow protection (torque-based) when low levels are encounteredin standpipe

• Provides upper speed limit to protect motor and drive from excessive load

• Provides lower speed limit to allow Model 3500XD air removal systemto work satisfactorily

• Several proven control schemes allow for the maximum benefit of variablespeed drive system

• Allows for future operating condition with same pump

• Allows for same pump size to be used when multiple pumps are involvedwith large TDH variations among them

• Allows for one impeller diameter (and Back Pullout) to be used formultiple pump installations — minimize inventory for critical services

PUMPSMART

Form B3500XD 5/07© 2007 Goulds Pumps, Incorporated

A subsidiary of ITT Corporation

Visit our website at www.gouldspumps.com

System Options