Fuel from green waste
The task at hand
Renewable energy from biomass
Biomass is destined to play a decisive role in the transition from fossil fuels to renewable energies. Ambitious EU objectives for the year 2020 confirm this: From 2020 onwards, 20% of primary energy consumption is to be obtained from renewable energy sources, with biomass making up more than a third. The focus is naturally on usage for the generation of heat and electricity. However, the mobilisation of the necessary biomass is becoming a major challenge.
Additional revenues in a new business area
Using the right technology, fuel mature enough for the marketplace can be generated from root stocks, drift wood, green waste (from gardening and landscaping) and untreated waste wood. This way, companies previously operating in the disposal business can transform themselves into energy suppliers.
Process cycle
Coarse shredding with low-speed
"As coarse as possible - as fine as necessary" -that´s the secret of efficient processing.The right application for the robust universal wood shredder Crambo, producing the proper particle size for further processing with screen baskets of 250-300 mm. The low-speed gives a high level of insensitivity to contraries.
Shredding with high-speed
A fuel with a coarse structure can be generated from woody green waste, clean waste wood and forest wood residue by shredding with the general-purpose Axtor wood-shredder. The input material determines operation in shredder- or the chipper-mode.
Short composting phase on demand
With green waste having a high leaf or grass content, adding a further
rotting process with triangular windrows is a sensible option. After around two weeks with frequent turning, green parts are largely decomposed and the material moisture is reduced.
Screening with a star screen
A fine fraction, a medium fraction and a coarse fraction are produced in one screen operation. The medium fraction generally represents the usable fuel sample. If required plastic is separated by windsifting, metals are removed by Fe-separation and stones are eliminated by a new developed stone separator. The fines are processed to compost and the coarse particles are brought back to shredding.
