BIOS - Bioenergy

Planning of pellet production plants

All planning activities relevant for the realisation of a pellet production plant can be covered by BIOS, i.e. feasibility studies, preliminary plant design, preparation of permit applications and detailed design, request for proposals, supervision of plant construction and commissioning as well as plant monitoring and process optimisation.

Raw material drying / heat supply / energy master plans

Especially in case of using wet raw materials special attention must be put on the energy supply (heat supply, respectively), as raw material drying is one of the main cost factors (beside the raw material) in pellet production. Consequently, the largest potential for optimisation can be found in this field. Therefore, BIOS offers also energy master plans for pellet production plants, aiming at a most efficient utilisation of available heat sources. Such energy master plans are integral part of planning activities for new plants but are also offered for existing pellet production plants.

Planning for pellet production plants including energy supply

Moreover, BIOS offers not only the planning for pellet production plants but also for plants providing the heat needed for raw material drying, which could be heat-only plants or biomass combined heat and power plants. If both pellet production plant and heat supplying plant should together be newly erected BIOS strongly recommends to do the planning for the whole plant from one experienced engineering company.

Comprehensive planning experience

BIOS experienced during its planning activities, that the most economic pellet production plants are large-scale applications with high capacity utilisation and a high level of automation with low pellet storage capacities, which use low temperature drying systems with access to cheap heat (in case of using wet raw materials). Even more economic, however, are pellet production plants based on dry raw materials. However, economic pellet production is also possible in medium and even small-scale applications, as long as good producer specific framework conditions are available. The danger of an uneconomic operation is, however, especially for small-scale applications large.

Wood chips and log wood as raw materials for pelletisation

The use of wood chips and log wood is gaining increasing importance in pellet production, mainly due to the strong growing pellet markets in many countries and the increasing shortage of the currently most important raw materials, i.e. wood shavings and sawdust. However, due to the additional steps necessary to produce pellets from wood chips and log wood the pellet production costs increase in this case.
When using log wood, special attention should be put on possible synergies between log wood preparation and heat supply. If pellets according to ÖNORM or DIN standards are to be produced, de-barking of log wood with bark (as it is usually available) is obligatory. The arising bark can be used as a fuel to produce a part of the heat necessary for the drying process in a biomass heating or CHP plant. Moreover, the utilisation of the log wood preparation can be increased by producing wood chips as an additional fuel for heat production.

Raw material characterisation

A sound characterisation of potential raw materials for pelletisation is essential before planning and erection of a pellet production plant. On the one hand, the raw material must be evaluated with regard to its applicability for the pelletisation process. On the other hand, its suitability for the production of pellets according to standards (i.e. mainly ÖNORM or DIN standards) must be evaluated. As BIOS offers a wide range of chemical analyses for biomass fuels and has long lasting experience in this field, a respective raw material characterisation is offered for pellet production plants. (Analyses + Measurements)

Thorough planning by an experienced partner

Therefore, thorough planning in all size ranges and applications, taking all relevant framework conditions into account, as it is offered by BIOS, is of great relevance.

Working field/Engineering