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Project: T132700 #0530D
 

REPORT No. T132700-0530D-1 GRINDING OF WOODY BIOMASS - ARBAFLAME TECHNOLOGY

Pilot scale testing for grinding of woody biomass was conducted in a VR mill. The VR Mill is a medium speed vertical spindle pulverizer, similar to the Raymond® Bowl Mill used for coal grinding. The testing material was a steam exploded wood pellet provided by Arbaflame Technology (Matrand, Hedmark, Norway). Bowl mill performance in grinding these biomass materials was investigated in terms of mill throughput and power consumption, as affected by product fineness, air flow, classifier setting as well as other mill operational parameters. The study also includes a direct comparison of grinding characteristics between biomass and coal, so as to provide essential information in assessing the ability to substitute biomass for coal in existing power plants.

Keywords: Woody Biomass, Bowl Mill, Table Mill, Vertical Roller Mill, Steam Exploded Wood Pellet, Arbaflame, Coal, White Wood Pellet

REPORT No. T132700-0530D-2 GRINDING OF WOODY BIOMASS – TORR-COAL WITH COMPARISON TO ARBAFLAME

Pilot scale testing for grinding of woody biomass was conducted in a VR mill. The VR Mill is a medium speed vertical spindle pulverizer, similar to the Raymond® Bowl Mill used for coal grinding. The testing material was a torrefied wood pellet provided by Torr-coal (Sittard, Netherlands). These results were compared to a steam exploded wood pellet provided by Arbaflame Technology (Matrand, Hedmark Norway). Bowl mill performance in grinding these biomass materials was investigated in terms of mill throughput and power consumption, as affected by product fineness, air flow and classifier setting, as well as other mill operational parameters. The study also includes a direct comparison of grinding characteristics between biomass and coal, so as to provide essential information in assessing the ability to substitute biomass for coal in existing power plants.

Keywords: Woody Biomass, Bowl Mill, Table Mill, Vertical Roller Mill, Torrefied Wood, Torr-coal, Coal, White Wood Pellet, Steam Exploded Wood Pellet, Arbaflame, Torr-coal