This week I thought I’d take a look at pyrolysis and its role in the waste sector. The technology is not new; essentially involving the deconstruction of waste or other matter through very high temperatures. While the overall numbers are small, it’s one of the more cutting-edge areas of waste management technology, with various patented approaches being developed. The following refers to projects in the AcuComm database where we can identify use of pyrolysis technology in some form. Related technologies such as gasification are not included.
AcuComm currently lists 90 projects which involve pyrolysis. The majority are not yet operational, however. Of the 90, 18 are either known to be on-hold or of uncertain status in some way. Only 23 are currently known to be operational, equal to 26% of the total. Interestingly, that percentage drops to 12% in terms of project value, suggesting that most of the operational activity to date is in smaller pilot projects.
Pyrolysis projects cut across a number of AcuComm’s facility type categories. The bulk involve general disposal of waste. One example is a new clinical waste disposal facility in Avonmouth, near Bristol, UK, which went into operation in July 2018.
Recycling is also significant, particularly of rubber or plastics. A recent example is a planned plastics recycling plant in Perth, Scotland. Recycling Technologies Ltd plans to use its RT7000 pyrolysis technology to turn waste plastics into oil form, which can then be used to make new plastic projects. The site is relatively small, with capacity for 7,000 tonnes of waste plastic per year, but is expected to be operational by the end of 2019. A pilot plant is already operating in Swindon, Wiltshire.
The largest number of pyrolysis projects are to be found in the USA and UK, which between them account for 29 active projects, equal to 40% of the total. If only operational plants are considered, the USA has five, followed by the UK with three, and Australia, Germany and Spain with two apiece.
While other countries lack this mass of projects, significant potential investments can be found around the globe. One example is New Zealand, where the government issued a grant in 2017 for a pilot project for the disposal of used tyres through pyrolysis. This is currently ongoing, although its precise status is unclear. Additionally, a proposed WtE plant in Huntly, New Zealand, may also include some form of pyrolysis capacity. It is far from certain whether this will ever be built, although that has more to do with a general resistance to WtE plants in New Zealand rather than any specific objections to pyrolysis.
AcuComm lists around 98 companies (classified as operators, contractors or equipment suppliers) involved with pyrolysis projects. The USA is home to 29 of these, followed by 11 in the UK and 10 in Germany.
AcuComm subscribers can easily explore and download the full data held on all these pyrolysis projects, including details on the companies involved, here.