Siemens Develops World's Largest Turbo Compressor for Sulfuric Acid Industry

Erlangen, Deutschland (PressExposure) May 07, 2013 -- Siemens is expanding its compressor portfolio with a turbo compressor which has been especially developed for the sulfuric acid industry. With a rotor diameter of 2,240 millimeters (mm) and a capacity range of between 8 and 14 megawatts, the new single-stage STC-SOF (22) turbo compressor is the largest and highest-capacity machine of its class. This compressor can replace two machines operated in parallel in plants with a production capacity of up to 6,000 tons of sulfuric acid per day. Operating in combination with optimized control and drive systems, the new unit can reduce overall costs by up to 20 percent compared with a solution with two model STC-SOF compressors with a rotor diameter of 1,400 mm.

The STC-SOF (22) turbo compressor is characterized by low procurement and operating costs. It synthesizes proven technology from the existing Siemens compressor family, custom-combining individual standardized modules for the specific application. Efficiencies of 87 percent are thereby achieved at the compressor coupling - ranking high among comparable compressors in the industry.

"The new STC-SOF (22) is based on a well-established compressor design concept and therefore extremely reliable. It combines robustness and adaptability with the most advanced aerodynamic and mechanical design. This unit will help us successfully strengthen our position as the global technology leader for pre-designed turbo compressors," says Lennart Nilsson, Head of the Compression Business Unit at Siemens' Energy Sector.

For further information on the STC-SOF turbo compressor, please see

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Siemens' Energy Sector is the world's leading supplier of a broad spectrum of products, services and solutions for power generation in thermal power plants and using renewables, power transmission in grids and for the extraction, processing and transport of oil and gas.

About Siemens

In fiscal year 2012 (ended September 30), the Energy Sector had revenues of EUR 27.5 billion and received new orders totaling approximately EUR 26.9 billion and posted a profit of EUR 2.2 billion. On September 30, 2012, the Energy Sector had a work force of almost 86,000. Further information is available at:

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Press Release Submitted On: May 08, 2013 at 3:29 am
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