Within BioBoost several applications of the intermediate energy carriers have been studied. Pyrolysis char and HTC-Coal were investigated at combustion test facility at IFK, University of Stuttgart. Combustion tests were focused on the investigation and evaluation of combustion performance, stability and emission behaviour at various thermal shares of these fuels.

Lab scale pulverized fuel combustion facility (20 kW) at IFK, University of Stuttgart

Regarding the use of liquid and solid energy carriers, combustion tests have been conducted. The details about the combustion test parameter and results are reported in a final public deliverable D6.2 Solid energy carrier combustion. The possibilities and cost effects for the adaption of existing boilers in full scale power plants to burn bio-char were analysed by ENBW and IFK results are reported in deliverable D5.7 Report on economy of energy carrier-based CHP systems for market implementation.

Pilot scale pulverized fuel combustion facility (500 kW) at IFK, University of Stuttgart

The use of pyrolysis oils for residential heating applications has been verified by DLR. A FLOX burner was adapted and combustion of pyrolysis oils successfully tested. Results are reported in deliverable D5.5 Concept of pyrolysis oil in FLOX burner proven.

Neste has evaluated the applicability of different energy carriers to Neste Oil refinery set up including the use of existing refinery units for upgrading of catalytic pyrolysis oil. Investments related to the new processing units are investigated. Due to the improved properties of catalytic pyrolysis over thermal pyrolysis oil, Neste Oil concentrated on catalytic pyrolysis (CP) oil upgrading. Results have been reported in deliverables D5.9 Report on catalysts testing of catalytic pyrolysis oils with the selected route and D5.10 Process concept on upgrading and utilization of catalytic pyrolysis oil at NESTE Oil refineries.

The extraction and the application of chemical by-products from the pyrolysis and hydrothermal processes have been studied by CHIMAR – phenols in resins, DSM – extraction processes of high value chemicals from pyrolysis – the combined production of chemicals and biocoal reported in deliverables D5.12 Report on pilot scale panel production with renewable resins and D5.11 Process flow diagram and description of the phenol recovery process from pyrolysis oil and economic exploitation report.

Scheme of biomass transformation via pyrolysis oil to transportation fuel and phenol

KIT studied the use of the energy carrier Biosyncrude for gasification and synthesis to transportation fuels. Theses study results are available in the results section in deliverable D5.8 Study on energy carrier use of entrained flow gasification.


Combustion of fast pyrolysis oil is possisible by air assisted atomization.


Equipment and fast pyrolysis oil to be adapted, need of further development.


Proof of concept for a refinery hydro-treating process (stabilization + deoxygenation) for catalytic pyrolysis oil upgrade.


Principle technical feasibility is given. Parameter optimization and engine testing of the fuel fractions required.




Catalytic pyrolysis oil upgrading in separate units integrated into oil refineries infrastructure maximizes biofuel yield and is preferred over the co-feed cracking FCC concept.


Build-up of dedicated upgrading plants in refineries is favorable. Further development on separate catalytic pyrolysis oil upgrading and refining units required.



Co-firing with hydrothermal carbonization coal is technical feasible, in some cases also mono-firing is possible.


Different combustion behavior has impact on burner and boiler design, requires further testing.