Modified precision-husky progrind H-3045 for chipping biomass
A specific size of whole tree chip was needed to co-mill wood chips with coal. The specifications are stringent because chips must be mixed with coal, as opposed to a co-firing process. In co-firing, two raw products are conveyed separately to a boiler. In co-milling, such as at Alabama Power's Plant Gadsden, the chip and coal mix must pass through a series of conveyors, a pulverizer, and pipes to the furnace. Handling specifications require smooth cut edges, as opposed to shredded edges. In a partnership involving several entities, including the National Forests in Alabama, Alabama Power Company, Forest-Based Economic Development Services, Precision- Husky, the USDA Forest Service Southern Research Station, and others, a trial was conducted to determine if wood chips could be created in a one-step in-woods process that would meet the stringent requirements of the power plant. Precision-Husky, of Leeds, Alabama, volunteered to work with the partnership to manufacture a machine that would create the chips to the stringent specifications needed.