Turbo Compressors

Howden supplies the Donkin range of "SG" integrally geared, single stage turbo-compressors. Modular single stage units providing flows up to 35m3/s and pressures up to 3 bar. For special applications, engineered single-stage turbo- compressors are available to provide flow rates of up to 50m3/s and multistage turbo compressors for pressures of up to 5 bar.

Bryan Donkin Blowers, one of the longest established designers of rotary blowers and compressors with a history extending back to 1856, was acquired by Howden in 1997.

Engineered to suit our customers’ most stringent requirements, the Donkin “SG” range integrates an overhung high efficiency impeller, precision gears and high stability bearings for a smooth and efficient transmission. All our sets incorporate turbo-compressor, driver, pressurised oil lubrication systems, controls, instrumentation and protection systems.

Features & Benefits

very high efficiency (approx 85%) that is little affected by part load running
inherent anti-surge protection - steep pressure/volume curve to give inherent stability and protection against surge
flow control - variable flow by means of variable vane diffusers, pre-rotational inlet guide vanes or a combination of both systems
control system - is designed to maximize operating efficiency and provide infinitely variable capacities over a wide duty range. Fully automatic capacity control is achieved from a single input signal, processed and relayed to the electric, pneumatic or hydraulic, guide vane actuators
skid mounted with integral lubrication - compact packaged unit, factory assembled on underbed to minimise installation time
maximised system efficiency - overall plant efficiency is maximised with our 'load sharing system ' control philosophy

Applications

sulphur recovery - air blowers providing reaction air for the catalytic recovery of sulphur within the petrochemical industry.
sulphuric acid plant - combustion air blowers and process gas mixture cleaning, sometimes combined
flue gas desulphurisation - oxidation air blowers associated with the cleaning of flue gases produced within power and heavy industry
industrial effluent treatment - aeration blowers associated with the biological treatment of effluent within industrial plants.
furnace/smelter/reactor air supply - air blowers providing combustion or reaction air primarily for the petrochemical and metals industries
process gas blowers - blowers handling a wide range of process gases for the petrochemical and heavy industry
fuel gas blowers - blowers handling natural and "dirty" coke-oven, manufactured, landfill and other bio gases. (landfill extraction)
carbon black plant - air blowers providing combustion air for the associated furnaces.
waste water treatment - aeration blowers associated with the biological treatment of effluent in municipal sewage treatment plants.
fermentation - air blowers associated with biochemical fermentation within pharmaceutical and yeast production industry

Standard & Certifications

our customised packaged sets are designed to comply with the requirements of international standards such as API, ASME (VIII DIV1), BS, DIN, GOST, AD.
all machines bear the European Standard’s C.E. mark (when supplied within the European Union). Our quality systems have been assessed/approved by a third party to ISO 9001:2000, ensuring consistent quality throughout all aspects of the design and manufacture.