Direct Energy Measurement Systems for Rotary Biomass Grinder - Hammermill

Abstract

The authors are solely responsible for the content of this technical presentation. The technical presentation does not necessarily reflect the official position of the American Society of Agricultural and Biological Engineers (ASABE), and its printing and distribution does not constitute an endorsement of views which may be expressed. Technical presentations are not subject to the formal peer review process by ASABE editorial committees; therefore, they are not to be presented as refereed publications. Citation of this work should state that it is from an ASABE meeting paper. EXAMPLE: Author's Last Name, Initials. 2006. Title of Presentation. ASABE Paper No. 06xxxx. St. Joseph, Mich.: ASABE. For information about securing permission to reprint or reproduce a technical presentation, please contact ASABE at

Energy Consumption at Size Reduction of Lignocellulose Biomass for Bioenergy

“…For determining the grinding degree of alfalfa, mountain grass, and corn stalks, after passing them through the hammer mill GM200, the grinded material was subjected to a granulometric analysis with a laboratory classifier, using five superposed sieves with wire sieve surfaces and orifice sizes of 2.8 mm, 2.0 mm, 1.4 mm, 1.0 mm and 0.71 mm, starting from the largest to the smallest, from top to bottom [15]. Even if the initial shock felt by the knife rotor was far greater when grinding corn stalks (consumed power reaching 2200 W at 9000 min −1 ), still, the average value of necessary power for grinding, at the same speed, was significantly lower, this being the case in all types of biomass.…”

“…For determining the grinding degree of alfalfa, mountain grass, and corn stalks, after passing them through the hammer mill GM200, the grinded material was subjected to a granulometric analysis with a laboratory classifier, using five superposed sieves with wire sieve surfaces and orifice sizes of 2.8 mm, 2.0 mm, 1.4 mm, 1.0 mm and 0.71 mm, starting from the largest to the smallest, from top to bottom [15].…”

“…Energy consumption for biomass grinding depends on the grinding machine variables, the feeding flow and the material properties, including initial particle dimensions [14][15][16]. Practically, size reduction can be achieved through dividing or shearing with sharp knives, in which the particle geometry is altered due to impact or compression [10][11][12].…”