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The new STC-SOF (22), impeller dia 2,230 mm, is larger than STC-SOF (14), dia 1,400 mm (pictured)

The new STC-SOF (22), impeller dia 2,230 mm, is larger than STC-SOF (14), dia 1,400 mm (pictured)



Compressor boost for plants

Siemens has developed the largest compressor of its kind, one that draws low procurement and operating costs coupled with high efficiency

June 2013

Siemens is expanding its compressor portfolio with a turbo compressor which has been especially developed for the sulphuric acid industry. With a rotor diameter of 2,240 mm and a capacity range of between 8 and 14 MW, the new single-stage STC-SOF (22) turbo compressor is the largest and highest-capacity machine of its class. It can replace two machines operated in parallel in plants with a production capacity of up to 6,000 tonnes of sulphuric acid per day. Operating in combination with optimised control and drive systems, the new unit can reduce overall costs by up to 20 per cent 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 characterised by low procurement and operating costs. It synthesises proven technology from the existing Siemens compressor family, custom-combining individual standardised modules for the specific application. Efficiencies of 87 per cent 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.

The 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, renewables use, power transmission in grids and the extraction, processing and transport of oil and gas.




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