Goulds 3500XD Medium Consistency Pumping Technology

Product Description

Medium Consistency Pump Systems

Download Literature

Specifications

  • Complete system of pump, valves, standpipe and controls
  • Pulp consistency to 16% bone dry.
  • Capacity to 2200 tons per day
  • Direct drive design
  • Patented air separation system
  • All stainless steel construction
  • Improved efficiency 
Design Features

Model Features

X-Ducer Performance Advantage:
Improved Pumping Efficiencies
  • An increase of up to 8 efficiency points
  • 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 standpipe elevations and higher operating temperatures
Existing Units Readily Converted to the X-Ducer Design
Standpipe Arrangement
Stock from washers and thickeners fall into special Goulds standpipes that are reverse tapered to prevent stock bridging. Systems include controls for vacuum, dilution, level and flow.
3500 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
Taking stock from standard medium consistency systems, Goulds booster pumps will increase pressures but do not require standpipes or degassing systems as air was removed in the primary pump.
Standpipe Level/ Dilution System
  • Constant standpipe level maintained by LC controlling LCV on pump discharge.
  • Alarms set at 85% and 10% level.
  • Start up Interlock at minimum of 10% level to prevent dry running of pump.
  • Automatic dilution system to assist pumping when standpipe level exceeds its setpoint.
Seal & Flush Water System
  • Three separate flow meters control flow to:
    • Mechanical seal & bearing cooling coil
    • Vacuum pump make up
    • Vacuum chamber
  • An Alarm sounds if the flow rate drops below 50% of the required value.
  • An Interlock keeps the pump from starting up without minimum seal and flush water flow.
Degas System
  • Vacuum pump operates when Model 3500 operates.
  • ARV is open when LCV is open.
  • An Alarm will sound if the vacuum pump shuts down.
  • Closing ARV can isolate air removal system.
Air Removal System
Without effective air removal, medium consistency pumps will not perate reliably.

Applications

  • Pumping from Washers, Presses and Disc Filters
  • O2 Delignification Reactor
  • D Stage Feed Pumping
  • Eop Stage Pumping
  • High Density Tower 


Goulds 3500XD Medium Consistency Pumping Technology

Product Description

Medium Consistency Pump Systems

Download Literature
Specifications
  • Complete system of pump, valves, standpipe and controls
  • Pulp consistency to 16% bone dry.
  • Capacity to 2200 tons per day
  • Direct drive design
  • Patented air separation system
  • All stainless steel construction
  • Improved efficiency 

    X-Ducer Performance Advantage:

    Improved Pumping Efficiencies
    • An increase of up to 8 efficiency points
    • 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 standpipe elevations and higher operating temperatures
    Existing Units Readily Converted to the X-Ducer Design

    Standpipe Arrangement

    Stock from washers and thickeners fall into special Goulds standpipes that are reverse tapered to prevent stock bridging. Systems include controls for vacuum, dilution, level and flow.

    3500 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

    Taking stock from standard medium consistency systems, Goulds booster pumps will increase pressures but do not require standpipes or degassing systems as air was removed in the primary pump.

    Standpipe Level/ Dilution System

    • Constant standpipe level maintained by LC controlling LCV on pump discharge.
    • Alarms set at 85% and 10% level.
    • Start up Interlock at minimum of 10% level to prevent dry running of pump.
    • Automatic dilution system to assist pumping when standpipe level exceeds its setpoint.

    Seal & Flush Water System

    • Three separate flow meters control flow to:
      • Mechanical seal & bearing cooling coil
      • Vacuum pump make up
      • Vacuum chamber
    • An Alarm sounds if the flow rate drops below 50% of the required value.
    • An Interlock keeps the pump from starting up without minimum seal and flush water flow.

    Degas System

    • Vacuum pump operates when Model 3500 operates.
    • ARV is open when LCV is open.
    • An Alarm will sound if the vacuum pump shuts down.
    • Closing ARV can isolate air removal system.

    Air Removal System

    Without effective air removal, medium consistency pumps will not perate reliably.
Applications
  • Pumping from Washers, Presses and Disc Filters
  • O2 Delignification Reactor
  • D Stage Feed Pumping
  • Eop Stage Pumping
  • High Density Tower 
Hydraulic Coverage
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    PSS Application: Use PSS to find performance curves

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