Syngas: energy-rich gas for power applications.

pyrolysis syngas fuel

Pyrolysis process results in production of calorific syngas at heating values even up to 36 MJ/Nm3.

Syngas leaving the Biogreen reactor is a hot mixture of condensable and non-condensable phases. The composition of blend depends on source material and pyrolysis operating conditions. Syngas from pyrolysis contains typically significant quantities of methane, hydrogen, carbon monoxide, and dioxide as well as higher hydrocarbons that build its calorific value and make it important fuel for the chemical and energy industries.

In the hot state, syngas can be considered as an alternative or renewable energy source and as a fuel for high temperature gas burners.

Directions of hot syngas utilisation:

  • heat production for drying or industrial purposes
  • industrial steam or thermal oil production
  • replacement of conventional fuel in the existing boilers
  • electricity generation via ORC
  • electricity generation via steam turbine

Applications focused on ambient temperature synthetic gas utilisation are linked with cooling down the syngas and extraction of liquid phase – pyrolysis oil. For the electricity generation or molecules separation, high degree of syngas purity is required. Moreover, syngas at ambient temperatures is easier to transport and offers wide scope of perspectives for it’s treatment, separation of molecules and further utilisation.

Directions of ambient temperature syngas utilisation:

  • electricity generation via internal combustion engine
  • electricity generation via gas turbine
  • methane to grid production
  • hydrogen production
  • fuel cells utilisation
  • other special applications

Example composition of syngas from different materials:

Received syngas composition is strongly dependent on several factors, including the properties of treated material, temperature of process, applied residence time and physical structure of raw feedstock (for details, see chapter « What influences pyrolysis process results? »). Below we provided an example compositions of non-condensable fractions of syngas measured at ambient temperature.

% Vol H2 CH4 C2-C4 CO CO2 N2 LHV [MJ/Nm3] kWh/tonne inlet
RDF 16% 25% 24% 18% 15% 2% 27.3 4690
biomass 15% 26% 3% 35% 17% 4% 17.10 2600
plastics 25% 38% 18% 9% 5% 5% 28 7800
tires 19% 40% 28% 3.5% 6.5% 3% 36 3300