Sulzer Submersible Recirculation Pump ABS RCP

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Sulzer Ltd. is a Swiss engineering firm and manufacturer of industrial machinery and equipment founded in 1775. The company first gained international recognition for its great inventions, such as the first precision valve steam engine, Sulzer-Diesel motor, and artificial hip joints. Today, Sulzer is a global leader in fluid engineering, providing innovative and proven industrial pumps, mixers, and aerators to pulp, paper and board, new wood-based processes, biofuels, sugar and starch, metals and mining, fertiliser, chemical processing, and water treatment industries.

KNOW MORE ABOUT SULZER SUBMERSIBLE RECIRCULATION PUMP

INDUSTRIAL RECIRCULATION PUMP

Abaque Peristaltic Pump HD25 model

ABS XRCP Recirculation Pump

Capacity up to 1.68 m3/h
Pressure head up to 1.63 m
Abaque Peristaltic Pump HD25 model

ABS RCP Recirculation Pump

Capacity up to 4,500 m3/h
Pressure head up to 1.8 m

Features & Benefits

  • Compact design
  • High efficiency
  • High reliability
  • Easy handling

Key Specifications

ABS RCP

  • Discharge Size: 10 in to 32 in / DN 250 – 800
  • Max Flow: 4,500 m3/h / 20,000 US gpm
  • Max. Head: 1.8 m / 6 ft
  • Motor Power: 1.5 – 25 kW

ABS XRCP

  • Discharge Size: 10 in to 31 in / 250 to 800 mm
  • Max Flow: up to 1.68 m3/s
  • Max. Head: up to 1.63 m
  • Motor Power: up to 25 kW

Applications

  • Recirculation of activated sludge

PUMP PERFORMANCE CURVE

ABS RCP 250 | RCP 400 | RCP 500 | RCP 800
ABS XRCP 50Hz

RECIRCULATION PUMP: ABS RCP

The ABS RCP series consists of recirculation pumps used in handling activated sludge during the denitrification/nitrification process in wastewater treatment plants. These submersible pumps are also designed for large flow and low head conditions between 0.1 and 1.8 metres. ABS RCP pumps are more economical compared to axial flow pumps as they do not need inflow chamber and large rising pipe when installed in tanks.

PUMP DESIGN FEATURES

  1. Self-cleaning propeller, 2- or 3-blade, optimized for effective pumping and vibration-free running
  2. Efficient three-phase motor, water pressure-tight encapsulated, protection type IP 68, stator insulation class F = 155°C. Motor shaft and rotor dynamically balanced
    • Economical and reliable design
    • Continuous running 24/7
  3. Cable connection area sealed from motor, with water pressure-tight cable inlet, antikink sleeve and strain relief
  4. Double shaft sealing with medium side mechanical seal of pure sintered silicon carbide
  5. Hydrodynamically designed solids deflection ring
  6. DI-electrode for seal monitoring and indication that an inspection is due
  7. Lubricated-for-life bearings with a calculated life of more than 100’000 operating hours

PUMP DESIGN FEATURES

  • Full stainless steel version (optional)
  • Self-cleaning propeller
  • Silicon carbide (SiC/SiC) mechanical seal protected by means of solid deflection ring
  • Condition monitoring (temperature, water ingress)
  • 100 000 hour bearing lifetime

The unit is lowered along a guide tube and connected to the pipeline by an automatic coupling system.

RECIRCULATION PUMP: ABS XRCP

The XRCP is Sulzer’s premium range of recirculation pumps, specifically designed for efficient pumping and recirculation of activated sludge in the denitrification/nitrification process of wastewater treatment plants. These compact and easy-to-handle pumps are equipped with Premium Efficiency motors and are designed for large flows and low heads. Compared to conventional axial flow pumps, recirculation pumps do not require expensive structures in the tank, such as an inflow chamber and a large rising pipe.

PUMP DESIGN FEATURES

  • Easy installation
  • Self-cleaning propeller
  • As an option Triple seal system with dual oil chamber enhance motor and gearbox protection for full peace of mind
  • Premium-efficiency IE3 motors or equivalent
  • Seal monitoring using multiple sensors
  • Thermo-Control System (TCS) provides timely warnings and auto switch-off

The unit is lowered along a guide tube and connected to the pipeline by an automatic coupling system.

PUMP DESIGN FEATURES

  1. Premium Efficiency motor
  2. Planetary gearbox
  3. Bearings
  4. Upper bearing
  5. Rotor shaft
  6. Sealed connection chamber
  7. Dual oil chamber
  8. Mechanical seal
  9. Propeller
  10. Moisture sensor (DI) seal
  11. TCS (Thermo Control System)

PRINCIPLE OF OPERATION

Industrial Submersible Recirculation Pump

The operation of submersible pumps is similar to that of electric submersible centrifugal pumps. An enclosed electric motor powers the pump as the fluid’s kinetic energy rises. The fluid is subsequently lifted through the pump by this energy’s partial conversion to pressure. The design uses a vertical shaft to rotate the impellers and pressurise fluid. Using mechanical seals is necessary to prevent the electric motor from malfunctioning as the entire unit is submerged in the fluid.

On the other hand, Sulzer recirculation pumps XRCP and RCP are centrifugal propeller types (dynamic/axial flow type) capable of pumping and recirculating large amounts of water at low back pressure. Typically used in wastewater handling and wastewater treatment applications, these pumps’ function is to recirculate sludge or rainwater back to the treatment process. They direct fluid in a straight line parallel to the impeller shaft rather than radially (which is more common in traditional centrifugal pumps).

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