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igus invests in chemical recycling pioneer to make plastic oil again

By Lisa Eitel | February 19, 2020

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igus has invested more than $5 million in a commercial plant that will recycle plastic waste within 20 minutes. Using Cat-HTR (Catalytic Hydrothermal Reactor) technology, the process will enable oil obtained from the recycling to make new polymer products.

Steve Mahon (CEO of Mura Technology Limited — left) with Oliver Borek (CEO of Mura Europa GmbH — right) and Frank Blase (CEO of igus GmbH — middle) want to recycle plastics. (Source: igus GmbH)

igus, the Germany-based manufacturer of motion plastics, runs its North American operations out of Providence, R.I.

Every year, eight million metric tons of plastic are deposited in the world’s oceans. These lost resources are worth around $80 billion. Most plastic, however, has been incinerated and only 14% recycled.

Plastic recycling is an important issue for igus. In the case of classic recycling – shredding and reusing plastic – igus took a bold step forward last October by launching its new chainge program. The company takes back energy chains when the service life of a machine is over, irrespective of their manufacturer. It then re-granulates the plastic and processes it again.

“With the igus chainge program, we have started to recycle the plastic of old products,” said Frank Blase, CEO of igus GmbH.

However, mixed waste remains worldwide and in the case of non-technical plastics, in quantities 100 to 1000 times greater than technical plastics. “Chemical recycling offers new solutions in this regard,” Blase said. “In the middle of last year, I read an article about Catalytic Hydrothermal Reactor technology in the FAZ. The next day, I contacted the German inventor Professor Thomas Maschmeyer in Sydney.”

The new plastic life cycle: With the Catalytic Hydrothermal Reactor technology, plastic waste can be converted into oil, thus enabling new polymer products to be created again. (Source: igus GmbH)

Seven months later, after intensive research, igus now invests four million British pounds ($5.1 million) in Mura Technology Limited and the construction of the first Catalytic Hydrothermal Reactor or Cat-HTR plant. The patented chemical Cat-HTR technology was developed in 2007 and tested in a pilot plant in Australia for 10 years. With Cat-HTR technology, plastic waste that was previously impossible to recycle can be converted back into oil within 20 minutes.

The process is more efficient than the extraction of fossil fuels from the ground. Only water, high temperatures and pressure are used to separate the cells and join them together. One plant alone can process 20,000 metric tons of plastic per year and reduce CO2 output by 28,180 metric tons. This corresponds to the annual consumption of 5,983 cars or the annual energy needs of 4,914 households.

The first commercial Cat-HTR-plant is currently being planned in Wilton, Great Britain, and construction is to start this year. Waste companies supply the waste plastic to meet their recycling goals. Oil is then obtained that can be sold as a replacement for virgin fossil oil. A total of four catalytic hydrothermal reactors are to be built in Wilton and will be able to process more than 80,000 metric tons of plastic waste every year.

As a next step, Mura is planning to issue licenses worldwide and build new plants. “We’re committed to the achievement of a state of balance in the world of plastics with technical solutions,” Blase said.

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About Lisa Eitel

Lisa Eitel has worked in the motion industry since 2001. Her areas of focus include motors, drives, motion control, power transmission, linear motion, and sensing and feedback technologies. She has a B.S. in Mechanical Engineering and is an inductee of Tau Beta Pi engineering honor society; a member of the Society of Women Engineers; and a judge for the FIRST Robotics Buckeye Regionals. Besides her motioncontroltips.com contributions, she also leads the production of the quarterly motion issues of Design World.

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