Liquids commonly sprayed in emission control systems, for example lime slurry for removal of sulphur oxides, and ammonia or urea for NOx control, are typically abrasive or non-lubricating and are not easy to pump reliably and accurately over the continuous duty periods required. Pumps reliant on mechanical seals, such as piston-plunger pumps, centrifugal pumps and progressing cavity pumps, are not ideally designed for handling liquids with these properties because the dynamic seal is always a potential point of wear.

By contrast, there are no dynamic seals in a Hydra-Cell pump, whose design, enables it to handle virtually any liquid – including abrasives, slurries and low-viscosity non-lubricants - with no difficulty. Moreover the pump also offers high presssure capability, simple accurate VFD flow control, wide turndown range, smooth flow and sustained low-maintenance performance – as proven in power generation plants around the world.

NOx and SOx control are by no means the only applications for Hydra-Cell pumps in the power industry. Gas turbine inlet fogging, where a cooling mist of DI water (a non-lubricant) is sprayed into the air intake, is one example where the Hydra-Cell has been preferred to piston pumps.

Hydra-Cell’s seal-less design also makes it ideal for pumping the non-lubricating liquids used in ORC (Organic Rankine Cycle) energy recovery systems now being developed.

For metering water treatment chemicals, or other applications where the alternative may be a traditional metering pump, the Hydra-Cell offers space-saving compact design, lower acquisition cost, reduced energy and maintenance costs and virtually pulseless flow, eliminating the need for pulsation dampeners.

Industry literature series: Dust Suppression - View brochure

See below for application examples from information supplied by customers