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Medium Consistency Pump Systems
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Goulds 3500XD Medium Consistency Pumping Technology Introducing X-Ducer™ Medium Consistency Pumping Technology

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Model 3500XD The Goulds X-Ducer™ Performance Advantage: Improved Pumping Efficiencies • An increase of up to 8 efficiency points which translates 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...

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Model 3500XD Advantages 3 Advantage High Efficiency Simplicity of Design Superior Reliability and Flexibility of External Degas System Control Scheme Continued New Technology and Development Benefit Lower power requirements X-Ducer design can permit upgrades with minimal investment Proven reliability Familiar to operating and maintenance personnel due to design — components and methods similar to conventional centrifugal pumps When required, maintenance is easy to perform Easy to maintain external vacuum pump X-Ducer design further simplifies the degas system for consistency ranges up to...

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Model 3500XD Air Removal System Model 3500XD 4 Without effective air removal, medium consistency pumps will not operate reliably. The efficient air removal system of the Model 3500XD and the simple degas system result in easy operation and very low maintenance. X-Ducer agitates pulp to assist flow into pump inlet. X-Ducer also separates air from water and fiber. X-Ducer utilizes conventional technology to concentrate air in core and prepare it for removal. Fiber and water move to the periphery of the X-Ducer, then is picked up by the impeller vanes. The air is concentrated near the center...

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Model 3500XD 5 Proven Goulds Applications Pumping Solutions Pumping from Washers, Presses and Disc Filters Pulp at consistencies up to 14% from different washer types feed into Goulds standpipes to be pumped to the next operation. Eop Stage Pumping Pumping through an O2 mixer into a retention tube and extraction tower. Back pressure may be applied at the top of the upflow retention tube. Hydrogen peroxide and caustic may also be added at the pump suction. D Stage Feed Pumping Pumping from a standpipe to a titanium ClO2 mixer and feeding the chlorine dioxide tower. High Density Tower Pumping...

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Model 3500XD Model 3500XD LABYRINTH SEALS STANDARD Frame is sealed with labyrinth seals to protect against the harsh environments encountered in pulp mills and bleach plants. BEARINGS • Thrust bearing is angular contact PumpPac® designed to handle uni-directional thrust loads. • Radial bearing is cylindrical roller design to handle radial loads. • Bearings are designed for a 14-year average life based on maximum loads. LUBRICATION Flood oil is standard with cooling coil in sump. DEGASIFICATION NOZZLE Removes air to vacuum system. RENEWABLE SIDEPLATE • Easily and economically replaced for...

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Model 3500XD 8 System Configurations Standpipe Arrangement with CIO2 Mixing Stock from washers, presses and thickeners feed special Goulds standpipes that are reverse tapered to prevent stock bridging. Systems include controls for vacuum, dilution, level and flow. Tower Bottom Arrangement Stock from bleach/storage towers falls into Goulds feed chute connected to the tower with expansion joint and isolation valve. Depending on tower level and consistency, a vacuum pump may not be required. Booster Arrangement Goulds booster pump will increase pressure but does not require standpipe or...

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Model 3500XD 9 Standard System Controls, Alarms & Interlocks DCV-2 DCV-1 MODEL 3500XD LCV I/P I/P LT LC DCV-1 UPPER DILUTION VALVE DCV-2 LOWER DILUTION VALVE LCV LEVEL CONTROL VALVE LT LEVEL TRANSMITTER LC LEVEL CONTROLLER I/P SIGNAL CONVERTER STANDPIPE LT PI LCV I/P STANDPIPE MODEL 3500XD LS LCV STOCK OUT OPTIONAL FLUSH BY CUSTOMER ARV VR VACUUM PUMP SEWER OR RETURN TO 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...

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Model 3500XD 10 Caustic stage pumping from washer operating at 1200 TPD at 12% consistency. One of seven units in complete bleach line. Bleached pulp from final wash stage being pumped to HD storage. Pumping Solutions Typical Model 3500XD Installations

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Model 3500XD 11 Hydraulic Coverage 700 0 0 500 1000 100 200 300 400 500 600 700 800 600 500 400 300 200 100 0 0 500 1000 1500 500 1000 1500 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 TOTAL HEAD – METERS 3x6–14XD 6x10–18 6x10–22HXD 4x8–18HXD 4x8–24XD 6x12–24XD TOTAL HEAD – FEET 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 design for new operating conditions Existing units readily modified to X-Ducer design — does not...

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PRO Services® Extending Equipment 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 Trained Service Personnel • Quality • Fast Turnaround • Emergency Service – 24 hours/day, 7...

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