CHEMICAL RECYCLING | PYROLYSIS PROJECTS
PYROLYSIS PROJECTS | CHEMICAL RECYCLING
polyethylene waste to useful feedstock for chemi- cal processes, including production of new PE. Aduro anticipates the project will progressively
expand the application of HCT to also upcycle PP, PS and other types of plastics. It says HCT “activates unique properties of water in a chemistry platform that operates at relatively low temperatures and cost.” It is a further development of a process dating back to 2011 for upgrading bitumen. “Traditional methods rely on high temperatures from 400°C to as high as 1,100°C, and on hydro- gen produced by conversion of fossil fuels at between 700°C and 1,000°C. Aduro Hydrochemo- lytic processes operate at only 240-390°C.” Another chemical recycling process that relies
on water – super-critical steam in this case – has been developed by Mura in the UK. In April, it announced a partnership with Dow Chemicals to support the rapid scaling of its HydroPRS (Hydro- thermal Plastic Recycling Solution) process. Dow will also take recycled materials from the first plant, in Teesside, UK. The first of four 20,000 tonnes/yr lines is expected to be operational in 2022. Dow and Mura are looking to co-operate on offtake at a number of additional European projects, currently in Mura’s development pipeline. At the core of the HydroPRS process is Cat-HTR technology, developed by Mura’s principal share- holder, Licella Holdings in Australia. Mura says one of the main benefits of HydroPRS is its scalability, due to highly efficient, homogenous heat transfer via the supercritical water. This results in even conversion of plastic feedstock and high yields of hydrocarbon products.
Alongside its first plant in the UK, Mura also has four 100,000 tonnes/yr sites under development in Germany and four of the same capacity in the US – Washington State has just been announced as the first. It also recently announced the sale of the first HydroPRS licence to Mitsubishi, which has plans to develop the process to commercial operation by
2023 at its Ibaraki site, Japan. It will have the capacity to handle 20,000 tonnes of plastic waste per year – with MCC studying the possibility of increasing capacity in the future. Initially, the project will aim to use post-industrial plastics. Warwick Manufacturing Group UK, is working on
an LCA of the process. Dow says it is actively pursuing a number of
commercial partnerships with customers and brand owners to scale chemical recycling technology. Two years ago, for example, it announced its partnership with Fuenix Ecogy Group for the supply of pyrolysis oil feedstock made from recycled plastic waste, to be used in the production of new polymers at Dow’s production facilities in Terneuzen, the Netherlands. It has since announced additional investments in Fuenix to help scale this advanced recycling technology further. Most recently, in October 2021, Dow and Fuenix announced the construction of a second plant in Weert, which will process 20,000 tonnes of waste plastic. As well as its partnership with Mura Technology, Dow has also established a multi-year agreement with New Hope Energy, based in Tyler, Texas, US, to supply it with pyrolysis oil feedstocks derived from plastics recycled in North America. Asked how it is countering arguments from
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Above: Cat-HTR technology, developed by Mura’s principal shareholder, Licella Holdings in Australia
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November/December 2021 | PLASTICS RECYCLING WORLD 23
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IMAGE: LICELLA
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