Title:
Processing and Energetic use of Woody Landscape Material
Author(s):
Letalik, C.
Document(s):
Paper
Abstract:
It has become common practice to energetically recover ligneous materials from landscape conservation activities in heat (and power) generation plants. The treatment of green cuttings along roads, railways or power supply lines is state of the art. Such landscaping materials are ligneous green residues e.g. from tree lopping in orchard meadows or shrub hedges – there are about 45,000 kilometers of hedgerows in Schleswig¬Holstein, Germany, alone. Shredder machines disintegrate the materials into any required size. By means of adjustable perforated baskets on the disintegrating engine and subsequent sieving steps, homogenous fuels of defined dimensions and low shares of fines can be provided, whichever required. Depending on the water content, such wood chips contain about 20 % less energy (calorific value) than comparable forest wood chips. It is important, however, that mineral fine particles like sand, soil or small stones are being sieved out before the combustion because they do not only decrease the calorific value and hence the boiler performance but also cause problems in the combustion areas resulting in higher costs for maintenance, cleaning and ash utilization. Composting plants are regularly well¬equipped. They use well¬proven management concepts for the material flow to merely condition as much landscape cuttings into fuels, enable the aerobe composting process with less ligneous and more humid materials to continue. For both compost and wood fuels there is sufficient demand resulting in increasing revenues. The EEG amendment 2012 classifies landscape conservation materials as raw materials of remuneration class II (= 8 ct/kWhel on top of the basic remuneration). This is likely to further increment the demand for ligneous fuel from landscape conservation. According to the EEG 2012 there will no longer be power plants without reasonable heat concepts.
Keywords:
biomass, combined heat and power generation (CHP), solid biofuels, wood chips, treatment, residues, renewable energies
Topic:
Biomass Resources
Subtopic:
Biomass feedstock, residues and by-products
Event:
20th European Biomass Conference and Exhibition
Session:
1BO.8.1
Pages:
122 - 126
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-1BO.8.1
Price:
FREE
