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A wide variety of different feedstock can be processed in the BTG pyrolysis process – in the past years tests have been carried out with wood, chicken manure, energy crops, straw, rice husk, palm-oil residues and many more. The type of biomass/residue influences the pyrolysis oil yield and quality. Typically, woody biomass gives the highest yields.
Before entering the reactor, the particles must be reduced to a size below 6 x 6 x Z mm and its moisture content to below 10 wt%. Normally, sufficient excess heat is available from the pyrolysis plant to dry the biomass from 40–50 wt% moisture to below 10 wt%.
Biomass pyrolysis tests are always needed for oil and ash analysis (among other things) to optimise pyrolysis plant designs. BTG owns a small pyrolysis unit for this purpose and we are always interested in new feedstock.
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| Examples | Bagasse | Woodchips | Poultry litter | EFB |
| Yield (wt%) | 55-65 | 65-70 | 40-50 | 50-60 |
| Heating Value (MJ/kg) | 17-19 | 17-19 | 23-25 | 16-18 |
