PRER and PRETR single-stage high-pressure pumps

Reinforced end suction pumps for high pressure

PRER and PRETR are reinforced OH2-type single-stage end suction process pumps, derivative from API610, using standard PRE hydraulics in a specially reinforced casing to suit high-pressure and high-temperature services such as boiler circulation.

PRER single stage pump
Main benefits
  • High-pressure casing design with special reinforcement to suit challenging high-pressure services
  • Centerline mounted to allow thermal expansion
  • Closed impeller for clean fluids
  • Extra heavy-duty large diameter shaft for low shaft deflection
  • Taper roller bearing for very high suction pressures
  • Robust bearing housing with low-noise fan for high temperatures

Main applications

The PRER and PRETR are designed for high-pressure and high-temperature applications and are typically used in fossil fuel and renewable power plants. The design is ideal for:

  • Boiler circulation pump
  • Hot water circulation pump
  • All processes with high-pressure requirements
  • High-pressure slurry service in petrochemical industry (PRER-SF)
Features and benefits
PRER single stage pump
1. Casing

Reinforced pressure casing

2. Nozzles

600# RF, 900# RF and 1500# RF flange ratings

3. Impeller

Enclosed impeller for high efficiency. Semi-open impeller with wear plate for slurry application

4. Shaft

Optimized shaft diameter

5. Bearing

Heavy-duty taper roller thrust bearing and roller radial bearing

 


6. Bearing housing
  • Carbon steel construction with cooling fins for improved heat dissipation
  • Low noise fan added for high ambient or high product temperatures, additional water-cooled option for special applications
  • Splash oil, ring oil, purge mist or pure mist lubrication options available to suit customer requirement
7. Seal Chamber

API 682 mechanical seal and API 610 seal chamber for improved seal environment and life

 
Operation data
50 HZ 60 HZ

Capacities

up to 2'000 m3/h
up to 8'800 USgpm

Heads

up to 320 m
up to 1'050 ft.
Pressure up to 200 bar
up to 2'900 psi
Temperature up to 400°C
up to 752°F
Performance range
PRE Performance Range 50 Hz
Performance range 50 HZ
PRE Performance Range 60 Hz
Performance range 60 HZ
* Performance range for PRE pumps. Smaller size may not be feasible in reinforced variant.
Materials

Pump part

Material

Casing Carbon steel, chrome steel, austenitic steel, duplex steel
Impeller Carbon steel, chrome steel, austenitic steel, duplex steel
Shaft Chrome steel, austenitic steel, duplex steel
Applications
  • Auxiliary applications
    The complex processes performed on a typical FPSO rely on the performance of dozens of pumps handling a variety of liquids under widely varying process conditions.

  • Boiler feed pump (BFP) for biomass waste
    Boiler feed pumps for biomass firing power plants applications are typically small/medium ring section type. Axially split multistage pumps are also available when required. The pump size and the design pressure will depend very much of type and the output of the power plant.

  • Boiler feed water and booster pumps
    Feed water pumps (FWP) pump the feed water from the de-aerator through the HP heaters to the boiler. The major characteristic of FWP is their high differential head.

  • Brine re-injection pump
    The brine re-injection pump re-injects the low enthalpy reject brine back to the geothermal field to renew the available resources.

  • Condensate extraction pump (CEP) for biomass firing
    Condensate extraction pumps (CEP) extract the condensate water from the condenser and pump it through the condensate polishing system and the LP heaters to the de-aerator feed water tank. In medium to large size gas-fired combined-cycle power plants, the CEP are vertical canned type to ensure enough Net Positive Suction Head Available (NPSHA). In small power plants, the CEP could also be horizontal end-suction type.

  • Condensate extraction pump (CEP) for gas-fired
    Condensate extraction pumps (CEP) extract the condensate water from the condenser and pump it through the condensate polishing system and the LP heaters to the de-aerator feed water tank. In medium to large size gas-fired combined-cycle power plants, the CEP are vertical canned type to ensure enough Net Positive Suction Head Available (NPSHA). In small power plants, the CEP could also be horizontal end-suction type.

  • Condensate extraction pump (CEP) for solar power generation
    Condensate extraction pumps (CEP) extract the condensate water from the condenser and pump it through the condensate polishing system and the LP heaters to the de-aerator feed water tank. The CEP are vertical canned type to ensure Net Positive Suction Head Available (NPSHA). In small plants, they can also be horizontal end suction type.

  • Condensate extraction pump for coal- and oil-fired
    Condensate extraction pumps (CEP) extract the condensate water from the condenser and pump it through the condensate polishing system and the LP heaters to the de-aerator feed water tank. In medium to large size coal- and oil-fired power plants, the CEP are vertical canned type to ensure enough Net Positive Suction Head Available (NPSHA). In small coal and oil captive Power Plants, the CEP could also be horizontal end-suction type.

  • Condensate re-injection pump for geothermal plants
    The condensate re-injection pump re-injects the cold condensate into the geothermal field to renew the resources.

  • Cooling water pump (CWP) for biomass waste
    Cooling water pumps for biomass firing applications are typically horizontal axially split or end suction type. Vertical turbine type pumps are also available when required.

  • Cooling water pump (CWP) for gas-fired
    Cooling water pumps (CWP) provide the fresh water to cool the exhaust steam in the condenser and pump it back to the wet cooling tower or the outlet of open cooling system. The major characteristic of the CWP is their high flow. In medium to large size gas-fired combined-cycle power plants, the CWP are vertical column type. In small power plants, the CWP could also be horizontal axially split type.

  • Cooling water pump (CWP) for geothermal plants
    Sulzer offers a variety of cooling water pumps, all made to provide your processes with the optimum temperatures for your processes. Installed in a water cooled condenser, the pumps will be active for your specific process.

  • Cooling water pump for coal- and oil-fired
    Cooling water pumps (CWP) provide fresh water to cool the exhaust steam in the condenser and pump it back to the wet cooling tower or the outlet of open cooling system. The major characteristic of the CWP is their high flow. In medium to large size coal- and oil-fired power plants, the CWP are vertical column type. In small coal and oil captive power plants, the CWP could also be horizontal axially split type.

  • Cooling water pump for heliostat central tower with direct steam generation
    Cooling water pumps (CWP) provide fresh water to cool the exhaust steam in the condenser and pump it back to the wet cooling tower or the outlet of open cooling system. The major characteristic of the CWP is their high flow. CWP are vertical column type. In small plants, they can be horizontal axially split type.

  • Feed water pump (FWP) for gas-fired
    Feed water pumps (FWP) pump the feed water from the de-aerator through the HP heaters to the heat recovery steam generator. The major characteristic of the FWP is their high differential head. In all sizes of gas-fired combined-cycle power plants, the FWP are horizontal ring section type; occasionally, they could also be barrel or axially split type.

  • Feed water pumps for solar power generation
    Feed water pumps (FWP) pump feed water from the de-aerator through the HP heaters to the solar steam generator. The major characteristic of FWP is their high differential head. The FWP are usually horizontal ring section type, but depending on customer requirements, they can also be barrel or axially split type.

  • Heat transfer fluid pump
    Heat transfer fluid pump (HTF) pumps circulate thermal oil through the parabolic troughs to heat it up and pump it to the solar steam generator. The main characteristics of the HTF pumps are their high temperature and their double sealing system. Depending on the plant size, HTF pumps can be either double or end suction type.

  • Hydrocarbon feed pump
    Hydrocarbon feed pumps feed the heat exchanger where a working fluid of low temperature boiling point is flashed by the medium temperature hydrothermal resource. Then, it is expanded in a thermal turbine driving an electric generator.

  • Molten salt circulation pump
    The main characteristics of the molten salt pumps is the extremely high temperature of the liquid handled. They are vertical line shaft pump type. Sulzer provides vertical pumps as molten salt circulation pump for the following two applications: Molten Salt Circulation Pump for Heliostat Central Tower with Molten Salt and Heat Storage

  • Power plants
    Sulzer’s extensive product portfolio to maximize the performance and reliability of your solid organic fuel biomass power plant, solid industrial or municipal waste fuel biomass power plant, and liquid or gaseous organic fuel biomass power plant processes.

  • Production pump for geothermal plants
    Geological characteristics ask for smart pumps that offer flexibility in the construction to suit their place of action. In shallow wells with less than -650m water level, the line shaft vertical pump configuration is preferably used. It's major advantages are the adaptability and simplified maintenance.

  • Steam generator Circulation Pump
    The steam generator Circulation Pumps (CP) circulate feed water from the hot water drum back to the solar steam generator to attemperate the steam temperature. The main characteristic of the CP is the high suction pressure. CP are high pressure end suction type.
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