Biomass Fuel Handling System

Client: Pan Pac Forrest Products

Overview

During 2001-2002, Pan Pac Forest Products Ltd installed a 36MW Bubbling Fluid Bed (BFB) Boiler. Pan Pac required a Fuel Handling system to store and deliver fuel for the new boiler. The fuel comprises coarse green wood waste and dry shavings, which require storing separately and then delivering to the energy plant in a blended and metered condition according to furnace demand.

Solution

The Fuel Handling and Management System designed, supplied, installed and commissioned by Brightwater comprised of equipment to separately store and reclaim coarse wood-waste as the primary fuel for the boiler and a shavings handling and storage system. The coarse wood-waste, which contains bark, green wood-waste, sawdust and some wood chips, is pushed into a 600m3 bunker by bulldozer.

The hydraulically actuated Saxlund pull floor ladder system automatically reclaims and meters the coarse wood-waste onto the conveyor feeding to the new boiler as demanded by the boiler controls.

The shavings are transported from Pan Pac’s planer mill to the boiler area by special truck and tipped into a below-ground receiving conveyor for transport to the 800m3 shavings silo. In the base of the silo, a Continental Circular Slewing Reclaim Screw (CSRS) recovers the shavings into screw conveyor systems feeding both the existing boiler and the new BFB boiler installation.

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