Throughout all areas of industrial processing, where challenging fluid handling applications are encountered pumps must be capable of delivering leak-free operation, efficiency and the highest levels of reliability. Included in KSB’s wide portfolio of products suitable for the chemical industry are two of KSB’s most successful pumps, namely the Magnochem magnetic-drive series and the Mega CPK series.
Two of KSB’s most successful pumps which meet these requirements in this industry sector are the Magnochem magnetic-drive series and the Mega CPK series.
The Magnochem
This mag-drive sealless pump eliminates fluid leakage because the concept gives the advantage of having only two static seals, which ensures a high degree of security. KSB has paid particular attention to the design of the magnetic coupling and the routing of circulation, cooling and lubricating flows. This allows the operator to choose between four operating modes ranging from a simple internal circulation to a so-called dead-end configuration with an auxiliary hydraulic system. As an option, an external heat exchanger can be installed. This means that the pump can be optimised for the pumping of polymerising, coagulating and crystallising as well as low-boiling fluids.
As well as the conventional version in back pull-out design, a close-coupled variant is available in 44 sizes for installation in confined spaces. The Magnochem series offers flow rates up to 1,400 m3/h at a maximum head of 233 metres, with operating temperatures ranging from -90°C to +300°C.
It is these design attributes that attracted a leading Swedish manufacturer of sponge cloths to specify Magnochem pumps for an application involving pressing a slurry mix into cotton fibres and then squeezing this between rollers to form the desired material. The slurry containing NaOH is pumped into the slurry mixing tank upstream of the press. As the press squeezes the slurry the NaOH recovered at the end of the pressing is recirculated for reuse. The KSB pumps have replaced the old leaking pumps used on feeding the mixing tank and recirculating the reclaimed NaOH.
The latest generation of Magnochem mag-drive pumps is available in 52 sizes and is characterised by high outputs per size, ensuring extremely low energy consumption. All pump characteristics conform to the ISO 2858/EN 22 858/ISO 5199 standards.
The MegaCPK
This pump is a standardised chemical pump for handling aggressive organic or inorganic fluids across a broad range of industries, from chemicals to fire-fighting systems and water supply applications. The pump series provides high reliability and lower operating costs, high levels of performance efficiency with a large range of variants for all applications.
The MegaCPK pump series has a modular design system, with 45 pump sizes and 58 hydraulic systems from which to choose. Designed to DIN EN ISO 2858 / ISO 5199, the pump delivers the highest levels of operational reliability with maximum availability. The back pullout design makes it easier to service and reduces spare parts holding. The maximum working pressure is 25bar and the fluid temperature capability ranges from -40° C to 400° C. Having a maximum flow 1160m³/h and maximum head 162m, the MegaCPK forms the basis of numerous standards and is particularly suitable for pumping aggressive liquids in the chemical and petrochemical industries. Its special design provides maximum safety in potentially explosive atmospheres in accordance with the ATEX Directives.
The versatility of the MegaCPK pump is shown in the Thassalia Marine geothermal project in Marseille. The plant uses energy from seawater to provide a sustainable energy source for 500,000m² of buildings in the new Eco-Cité Euroméditerranée. The energy is then transported to the Euroméditerranée buildings for heating or air-conditioning, via a hot water network (60° C) and a chilled water network (5° C). These two circuits are each equipped with four KSB Mega-CPK pumps each displaying a nominal HMT of 110 mCE or 120 mCE depending on the motors, their power ratings ranging from 160 kW to 355 kW. This requirement was a determining factor in the choice of pumping solutions.
The requirements of the specifications were very high not only in terms of height, but also in efficiency and speed. Thus, the Mega CPK pumps retain yields up to 84% at speeds of 1500 rpm and 1750 rpm. The 3km network demanded powerful pumping solutions with strong HMT on both hot and chilled circuits.
Summary
These two tried-and-tested pump series have been continually developed and improved by tapping into KSB’s unique wealth of knowledge and unsurpassed experience in chemicals production. KSB conducts intensive research into new technologies and develops innovative new materials.