Atlas Copco punts new screw-blower technology

Atlas Copco has replaced its rotary lobe blowers with screw blowers.

Atlas Copco compressor technique business area president Stephan Kuhn
Atlas Copco compressor technique business area president Stephan Kuhn

Atlas Copco has launched energy-efficient technology for air-blowing applications in the form of the new ZS screw blower, which will replace the company’s rotary lobe blowers.

Screw technology is 30% more energy-efficient on average compared to lobe technology. Applications include wastewater treatment, pneumatic conveying, power generation, food and beverage, pharmaceuticals, chemicals, pulp and paper, textiles, cement and general manufacturing.

“Atlas Copco innovates continuously to ensure sustainable productivity for our customers, who are able to take advantage of tomorrow’s blower technology today,” said Atlas Copco compressor technique business area president Stephan Kuhn.

According to the US Environmental Protection Agency, about 56 billion kilowatt hours (kWh) are used for drinking water and wastewater services. Assuming an average mix of energy sources in the US, this equates to adding almost 45 million tons of greenhouse gases to the atmosphere. A minimal 10% energy-saving in this sector could collectively save about US$400 million a year.

In a typical biological wastewater treatment plant, the aeration blower system accounts for up to 70% of the energy usage. Today the majority of these plants use less efficient lobe technology, which has had little development since its introduction in the late nineteenth century. By reducing the energy usage of the aeration blower system, these plants will decrease energy costs while operating in a more environmentally-friendly manner.

“Energy consumption typically represents 80% of the lifecycle costs of a blower. By introducing screw technology to our air blower range, we now offer a complete product portfolio of compressors and blowers for all applications and processes below 4 bar(e)/58 psig,” said Atlas Copco oil-free air division president Chris Lybaert.

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