Wilson Bio-Chemical, Unit 22, Hassacarr Close, Dunnington, York, YO19 5SN | Tel: +44 (0) 1246 264 950 | mail@wilsonbio-chemical.co.uk

The Autoclave

Process Overview

  1. Arrival of waste.

Reception of unsorted waste. There will be an inspection and manual extraction of oversized items .


  1. Steam Treatment.

Automatic loading of autoclave with 20 tonnes of unsorted MSW.


  1. Post Treatment Separation.

Screening out the Wilson Fibre® from other collected sale products by automatic and/or manual methods.


  1. Fibre output.

The fibre is screened and when required can be dried and refined. Wilson Fibre® (renewable fuel) is then sold/used for renewable power generation.


This is a new steam treatment process, using existing autoclaving and steam boiler technologies.  One of the unique advantages of the technology is its capacity to size-reduce waste by up to 80% of its original volume.  It also sanitises and de-labels metals, allows for the extraction of plastics and at the same time breaks down biodegradable materials into homogeneous cellulose rich fibres, Wilson Fibre®.  The system is capable of handling non-hazardous solid waste, through an automatic reception, transfer and processing operation.

The system can be self-perpetuating in that the produced Wilson Fibre® can be used to generate all the necessary process steam and electricity for the autoclave system together with a significant surplus which can be used to generate and export electricity and heat. The plant could be initially fuelled using traditional gaseous or liquid fuels, subsequently switching to renewable when appropriate.

Advantages of autoclaving process:

  • Reduce waste to up to 80% of its original volume
  • Does not require pre-sorting at source
  • Divert up to 90% of waste from landfill
  • With a 2 vessel system you can process up to 150,000 tonnes per annum
  • Sanitises all the waste at 160°C for minimum 30 minutes.
  • Recovery of all plastics, glass, ferrous and non-ferrous metals, wood and textiles
  • One module can process 20 tonnes of waste in 1 hour
  • Modular in design enabling easy scale up from 150,000 tpa through to 600,000 tpa throughput
  • Integral odour abatement system

‘Bio-energy has the potential to provide about 30% of the 2020 energy target through bio-fuels, bio-refineries and the recovery of energy from the biomass portion of waste’

Highlights of Energy Conversion with the Wilson Fibre®

The Wilson Fibre® has a high surface area to volume ratio and medium calorific value resulting in easy conversion to power and heat via a variety of methods:

  • Co-Firing with coal in existing power plant furnaces.
  • Combustion on its own as a solid fuel in conventional furnaces.
  • Gasification to produce synthesis gas (Syngas).
  • Pyrolysis to produce hydrogen and methane.
  • Anaerobic digestion to create high yields of methane and a high quality soil enhancer
  • Production of Bio-Butanol and Bio-Ethanol by breaking down the predominantly cellulosic fibre to sugars we can produce bio-butanol, acetone and ethanol for traditional markets such as plastics, solvents, pharmaceuticals or for the second generation biofuels market.


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