Combined gasification and chemical post-treatment
The process will start from SRF, a fuel produced from non-hazardous waste in compliance with the European standard EN 15359 and normally destined to cement factories or waste-to-energy purposes. The type of SRF used in the demonstrator is obtained from non-recoverable plastic, collected from separate waste collection by the Corepla consortium, a platform owned by PRT. The composition includes 40% of plastics, 25% inorganic fraction, 20% paper and cardboard, 10% organic fraction and 5% fabrics.
This approach will represent one of the last pieces of the regional integrated waste plan for reuse of waste that cannot be destined for recycling. The conversion of SRF to syngas will be performed through a gasification process owned by CSM at high temperature (700-900 °C) and high heating rate, in a reducing environment and atmospheric pressure to ensure a content of H2+CO higher than 80% vol.
This gasifier (200 kg/h), based on rotary kiln technology includes the as main sections:
- Dryer/ Pyrolyser section, which has a patented self-heating system,
- Char gasifier section, working at an air-fuel ratio in the range of 0.2-0.3,
- Syngas collector, a completely new section to be developed in PLASTICE, and an Energy recovery sector, recirculating syngas through a radial tube to dry and pyrolyze the plastic residue in an indirect way.
