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Materials and Feedstock Preparation

One Constant

Change

Original “Easy” Materials

• Whole tree chips

• Clean residuals

• Hog fuel

Materials Progression

•General availability•Forestry Practices•Competition for materials•Economic Influences•Cost

Wood

• Forrest Residuals

• Urban

• Recovered waste piles

Blended Feedstock (RDF)

• C&D

• Green Waste

• WSW Sorts

Agricultural/Residuals

• Hulls

• Screenings

• Straw

• Grasses

• Stovers

• Energy Crops

Feedstock Preparation

Contamination

• Rocks

• Soil/Sand

• Ferris Metal

• Non-Ferris Metal

• PVC (Chlorine)

• Siloxanes

Effects on the Boiler

• Operations, process control• Moisture content• BTU value• Corrosion• Slaging/Fouling• Clinkers• Ash• Emissions

Application

• Protect the system• Remove contaminants• Deliver correct geometries• Flow rates• Availability (OEE)

Self cleaning magnet, disc screen, vertical feed grinder (Hog fuel)

Horizontal Grinder Infeed (Land clearing, mixed green waste)

Horizontal Grinder rotor and feed roll (Land clearing, mixed green waste)

Horizontal Grinder rotor and feed roll (Land clearing, mixed green waste)

Horizontal Grinder (Urban Wood)

Finished Material (Urban Wood)

Horizontal Grinder rotor and feed roll (Land clearing, mixed green waste)

Horizontal Grinder (Large green waste)

Horizontal Grinder (Large green waste)

Finished Material (Green waste)

C&D to RDF

Horizontal Grinder (C&D)

C&D to RDF

C&D to RDF

Vibrating Screen (SE Asia)

Wood Co-Fire, Feeder, V Feed Grinder, Screen (PA power plant)

Disc Screen, Shredder (Pulp mill)

Disc Screen

Trommel Screen, Oscillating Screen

Complete Line, Food Waste to AD process

Complete Line, Recovered Wood Pile

Complete Line (Recirculation System)

Horizontal Grinder (Giant King Grass)

Bale Processing (Corn Stover)

John Snodgrassjsnodgrass@westsalem.com

503.983.4322