Retting mill - the efficient machine for disintegration of wibrous biomass

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00230319" target="_blank" >RIV/68407700:21220/15:00230319 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.5071/23rdEUBCE2015-2DV.1.67" target="_blank" >http://dx.doi.org/10.5071/23rdEUBCE2015-2DV.1.67</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5071/23rdEUBCE2015-2DV.1.67" target="_blank" >10.5071/23rdEUBCE2015-2DV.1.67</a>

Result language
angličtina
Original language name
Retting mill - the efficient machine for disintegration of wibrous biomass
Original language description
There is nowadays a problem to comminute wet fibrous biomass like agriculture and forestry wastes in biotechnologies. Colloid mills or extruders are used in these applications to disintegrate wet material, i.e. with a moisture over 20 % wt. The major disadvantage of these machines are high energy requirement, being in hundreds or thousands kWh per ton of dry mass, and milling in process cycles. There was therefore an effort to design a new type of grinder that is able to continually mill wet fibrous biomass under minimum energy demand. The new prototype of grinder was developed. Its grinding principle is based on roll-plate grind system equipped with sharp-edged segments. The test experiments with wet wheat straw showed that energy demand to comminute particles from 200 mm to 10 mm was equal to 50 kWh.t-1 TS, all in continual mode of operation. The subsequent biogas test showed an increase in methane yield by 25 %. Based on energy-economic balance of the process, it was observed that the implementation of retting mill to currently-operating biogas plants decreases specific power for batch mixing by 70 %, increases its net profit by 14 % and simple payback time of size reduction technology with implemented retting mill to nowadays operating biogas plants is 5.6 years.
Czech name
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Czech description
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
23rd European Biomass Conference and Exhibition Proceedings
ISBN
978-88-89407-51-6
ISSN
2282-5819
e-ISSN
—
Number of pages
5
Pages from-to
-1
Publisher name
ETA - Florence
Place of publication
Florencie
Event location
Vienna
Event date
Jun 1, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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