ZE/ZF end suction pump range

Heavy-duty end suction pumps make light work of liquids

The ZE/ZF are ideal pumps for arduous industrial applications handling clean, cold or hot liquids, including hydrocarbons and light chemicals. The ZE/ZF pumps are industrial process pumps with a modular design to provide maximum interchangeability of spares.

ZE/ZF end suction pump range
Main benefits
  • Centerline mounted to ease thermal expansion without jeopardizing the shaft alignment
  • Wear rings and balance holes optimized to maximize seal and bearing life
  • Extra heavy-duty shaft for low shaft deflection and long life of seal and bearings
  • Cooling chamber easy to clean
  • Low noise fan for high ambient or operating temperatures
Main applications
  • Booster pumps for medium size boiler feed water units in conventional thermal and combined cycle power stations
  • Hot water circulation pumps in district heating plants and boiler circulation in industrial power generation
  • Auxiliary pumps in conventional and renewable thermal power stations
  • Main and auxiliary Heat Transfer Fluid (HTF) circulation in solar power stations
  • Feed pumps, second pass pumps and Energy Recovery Device (ERD) circulation pumps in desalination by reverse osmosis
Main design features
  • Enclosed impeller provided for lower Net Positive Suction Head Required (NPSHr)
  • Self venting, centerline discharge
  • Casing feet and baseplate designed to meet API 610 nozzle loads and moments and increased thermal expansion
  • API 682 seal chambers
  • Axial thrust bearings are back-to-back angular contact or taper roller for heavy-duty applications
Key characteristics
Capacities Up to 2,600 m3/h  /  11,440 US gpm
Heads Up to 300 m  /  1,000 ft
Pressures Up to 100 bar / 1,450 psi
Temperatures Up to 425°C  /  800°F
Discharge sizes Up to 400 mm  /  16 inches
Maximum speed of rotation Up to 3,600 rpm
Performance range
ZE/ZF performance range 50 Hz
Performance range 50 Hz
ZE/ZF performance range 60 Hz
Performance range 60 Hz
Applications
  • 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.

  • Chemicals for Pulp Paper and Board
    Tailored designs, features and material selections to meet the most demanding pumping, mixing, and agitation challenges in the production and preparation of chemicals, tall oil production, and lignin processing.

  • 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 allow artifical creation of 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 allow artifical creation of 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 allow the creation of artificial 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 allow creating artificially 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.

  • 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.

  • Multi Effect Distillation MED
    Multi Effect Distillation (MED) process is based on iterative evaporation-condensation process in several stages under vacuum conditions, using residual steam from adjacent power plant as heating media for evaporation.

  • 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.

  • Pre-treatment
    Before reaching the RO Island, where specifically the desalination process will take place, raw water needs to be treated to ensure the required quality of the raw water to avoid fouling the RO membranes.

  • Product water transfer
    After post treatment, product water is pumped to the storage tanks or into the water distribution networks.

  • RO-Island HPP 2nd pass
    This is the heart of the SWRO desalination process, where the desalination effect takes place. The treated sea water is fed by means of the high pressure pumps into the RO membranes, obtaining permeate or product water and high pressure brine rejection, whose high pressure energy is recovered by selected Energy Recovery Device.

  • Water intake
    Raw water to be desalted, either sea water or brackish water will be taken from natural resource and pumped to pre-treatment stage. For sea water abstraction, different intake arrangements can be considered, which will define the pump type to be installed.
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