Biomass project co-ordinator Ron Beaulieu checks system functions in the biomass control room. good deals out there.” Initially, Beaulieu says they thought Ecological Solutions for the Future Bioenergy Simplified die system Sturdy and reliable Low maintenance More than 200 TECHNOLOGY sold Pellet Mill Evolution Serie Performance • Pellet mills intended for the manufacture of all kinds of pellets: fodder, compound feeds,wood pellets, cereal by-products, urban waste and animal slurry, fertilizers and soil additives conforming • to health normative and safety requirements • Patented system to eliminate product contamination by lubricants • Half the maintenance costs compared to a gear box pellet mill • Simplified die installation • 12 models available Integration • Compact design allowing easy replacement of existing pellet mill • Limited vibration level: guarantees durability of the pellet mill • Set up flexibility Comact Quality • High precision • Reliable and sturdy design • Easy maintenance EMERGENCY SERVICE • 24 HOURS A DAY 7 DAYS A WEEK • 365 DAYS A YEAR 418 227-2727 [email protected] Turnkey Pellet Plants Solutions Equipment Integration • Customized Equipment Canada Québec (Québec) • Saint-Georges (Québec) • Montréal (Québec) • Salmon Arm (British Colombia) 18 CanadianBIOMASS Contact us at [email protected] 418 628-2888 www.comact.com United States Hot Springs (Arkansas) JANUARY/ FEBRUARY 2010 about trying to fit all of the new equipment into the mill’s existing boiler building, but they ended up using that space for a fuel bin and leaving enough floor space in the build- ing for the turbine to be added later. A new building was erected to house the KMW- specified Cleaver Brooks 80,000-pound/ hour steam generator (boiler). The energy system runs on mill waste, which is pri- marily bark from the sawmill’s Cambio and Nicholson debarkers. “Our sawmill will process 18,000 to 19,000 logs/day, and 10 to 12% of each log is bark,” Beaulieu explains. “That gives us about twice as much bark as we actually need for the energy system, so we will send our excess to the Edmundston mill. We don’t need to buy any biomass on the open market or use any biomass from logging operations, so we are essentially self- sufficient in this area.” The energy process starts in the fuel bin, which can hold up to 350 green tonnes of bark. From the fuel bin, the bark feeds into the KMW combustor, which is an improved Scandinavian design with moveable step grates. The combustor step grates feature three zones, with the first zone designed to condition or dry the fuel, the second to gas- ify the fuel, and the third to burn leftover carbons. Very limited undergrate air is used, with the bulk of combustion air introduced directly above the gasification zone. Glycol is used to cool down the grates. This heated glycol is then circulated through floor-em- bedded tubing in the fuel bins to preheat Evolution PEllEt Mill on display at WoodWeek SEPt. 10th to 12th Booth 550 , 2009
Canadian Biomass January/February 2010: Page 18
