- Modular hydraulics for high efficiency in a wide range of operating conditions as required for gas-fired combined-cycle power plants
- Optimized design for thermal conditions as applicable in gas-fired combined-cycle power plants
- Large branch sizes for optimized inlet flow, low noise level and higher allowable forces and moments
- Unaffected by rapid temperature variations and therefore highly suitable for gas-fired combined-cycle power plants where frequent start-stop operation is specified
- Easy access to the seal cooling chambers for cleaning
- Stiff shaft design for critical speeds above the maximum operating speed
The MC pump is primarily designed for power applications, such as: auxiliary boiler feed services; Nitrogen Oxides (NOx) abatement and fuel injection in combined-cycle power plants; boiler feed for biomass fired and industrial power plant; and steam generator feed in concentrated solar power plants. The design is ideal for:
- Main and auxiliary boiler feedwater pump duties up to 180°C
- Nitrogen Oxides (NOx) abatement and fuel injection in gas-fired combined-cycle power plants
- Condensate extraction pumps in power stations and industrial plants
- Auxiliary services within gas-fired combined-cycle and industrial power plants
- Feedwater pump in desalination by reverse osmosis
- High pressure water in general industry
- Feedwater pump for gas-fired combined-cycle power plants
- Feedwater pump for concentrated solar power plants
- Boiler feedwater pump for biomass and industry power plants
1. Casing support
Foot or shaft centerline mounted for large sizes and high temperatures
- Large suction branches optimize inlet flow
- Reduce noise levels through low branch velocities
- Allow higher forces and moments
- Several hydraulic sets per pump size guarantee high efficiencies and low operating costs over a wide operating range
- Low net positive suction head required (NPSHR) first stage; double suction first stage can be provided for selected sizes
Stiff design resulting in higher critical speed than running speed and small shaft deflection. Areas subject to wear are protected
5. Wear rings
Maintain high efficiency during pump life. Low maintenance cost, high availability and short downtimes
6. Hydraulic thrust balancing system
Balance drum and axial thrust bearing designed for long life under extreme operating conditions. Optional balance disc and lift-off device (mechanical or magnetic) available for frequent start-stop operation
Casing sealing by confined O-rings, therefore unaffected by rapid temperature variations and high pressures
8. Multiple bearing types
Antifriction bearings for low cost and hydrodynamic bearings for higher energy services
|50 Hz||60 Hz|
|Discharge sizes||up to 350 mm||up to 14 in|
|Capacities||up to 1,700 m3/h||up to 8,500 US gpm|
|Heads||up to 1,750 m||up to 5,500 ft|
|Pressures||up to 180 bar||up to 2,610 psi|
|Temperatures||up to 180°C||up to 355°F|
Suction casing, discharge casing
|Carbon steel, chrome steel, duplex steel|
|Impellers||Carbon steel, chrome steel, duplex steel|
|Shaft||Chrome steel, duplex steel|
|Balancing system||Chrome steel, duplex steel|
Boiler feed pump (BFP) for biomass wasteBoiler 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.
Brine re-injection pumpThe brine re-injection pump re-injects the low enthalpy reject brine back to the geothermal field to renew the available resources.
Feed water pump (FWP) for gas-firedFeed 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 generationFeed 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.
Power plantsSulzer’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.
RO-island HPPThis 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 transportationWater transport pumps are pumping large volumes of water over mostly long distances and high geodetic heights to geographical areas or industries where it is required for different purposes. We offer various configurations according to your needs.
The balance drum device carries the major proportion of the hydraulic thrust. The drum diameters are chosen to minimize the thrust at normal operating point. The residual and additional thrust loads occurring above/below the normal operating point are carried by the thrust bearing, typically a taper roller bearing.
The balance drum is suitable for:
- Pumps operating at the end of the curve, up to 130% of the best efficiency point
- Frequent stop-start applications thanks to nearly wear-free device
With the balance disc, the axial force is completely compensated, therefore no axial thrust bearing is required.
The disc designs are optimized for each hydraulic and size. The balance disc is suitable for operation up to 120% of the best efficiency point (up to 130% for selected sizes).
For operation with frequent start and stops, the installation of a lift-off device is available as an option (either mechanical or magnetic).
Mechanical or magnetic (PERMAVORTM) lift-off device
- Prevents touching and wearing of the disc/counter disc during operation at low speed, such as start up and shut down
- Self-controlling passive system
- Reduces load on balance disc under normal operation
- Integrated into the radial bearing housing; no additional power consuming bearings required