Jeff, How is the separation of foreign matter (sand, rocks, furry critters) handled in the bundling process?
Kelly On Sep 6, 2014 5:30 PM, "Jeff Davis" <[email protected]> wrote: > One recent innovation involves the compaction of logging residues into > cylindrical bales called composite residue logs (CRL) or biomass bundles > (Johansson et al, 2006). CRLs are approximately 24 inches in diameter > (61cm) and 10 feet (3m) long. > > https://www.youtube.com/watch?v=XZOoHUEgf8w > > > One of the most appealing aspects of CRL is, they can be handled similarly > to round logs. Bundles are efficiently handled and transported with > conventional equipment used for roundwood. Simple modification to the > trailer may be required depending upon CRL length and makeup. The 1490D > Slash Bundler can produce 18 to 26 bundles per hour. Cost to bundle at the > logging deck is approximately $11 to $14 per green ton. Total cost of > operations to gather, bundle and deliver is $21 to $25 per green ton. A > blend of pine and hardwood offers best economic advantages due to the > amount of available material on ground, relative ease of handling and > energy content. The calorific heat content has been measured at 10 MJ per > green kg (4300 Btu per green lb) and an energy density of 4.5 GJ per m3. By > comparison, calorific heat content of oven dry bundles yield 19.7 MJ per > ovendry kg (8500 Btu per lb). > > Slash bundling offers superior storing characteristics. Private data shows > that seasoning bundles (storing) for 11 months reduces moisture content to > 25 percent to 30 percent and increase energy value to 17.2 MJ per kg (7400 > Btu per pound). The post-seasoned delivered cost is $ 14.50 per ton. To > date, approximately 67,280 m3 have been bundled from 15 sites in East > Texas. The best comminution option appears to be horizontal grinders at a > terminal. Grinders accept bundles easily and costs are minimized. > Independent data show a 65-percent reduction in grinding costs, using a > 1,500 horsepower electric motor from parasitic load of the electric power > plant for which the bundles are serving. > > http://www.extension.org/pages/26530/bundling-woody-biomass > > > > Cheers, > Jeff > > > > _______________________________________________ > Gasification mailing list > > to Send a Message to the list, use the email address > [email protected] > > to UNSUBSCRIBE or Change your List Settings use the web page > http://lists.bioenergylists.org/mailman/listinfo/gasification_lists. > bioenergylists.org > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ >
_______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
