Project Location: Claiborne, Alabama

Project Completion: June 1992

Project Description:

ESI performed the EPC retrofit of an existing 350,000 pph C-E boiler with a cascade biomass drying system. The boiler was originally designed for bark, stoker coal, and oil. With the expansion of the pulp mill and the construction of a new newsprint mill, the coal system was decommissioned and the bark supply from the wood room increased, thus increasing the need to burn more bark in the boiler. The fuel that is dried is a combination of bark from the wood room at 50% moisture and pulp mill sludge at 65% moisture. With the dryer in service, the need for auxiliary fuel firing was eliminated and the boiler is now capable of producing the steam required for the mill and taking load swings on bark/sludge firing only.