cpm饲料机械设备培训.pdf

CPM WOOD PELLETING Pelleting Process The Process Wood pelleting process • Dry wood (8-10%) to the hammermill • Feed stock size not to exceed 1-3/16”x1-3/16”x3/8” • Conditioner after hammermill for moisture addition • Retention bin with at least 20 minute capacity • Moisture meter after retention bin • VFD Feeder for PM Conditioner • Conditioner • Pellet Mill • Cooler • Screener The Process Vertical Flow The Process Horizontal Flow The Process Horizontal Flow The Process Horizontal Flow The Process Horizontal Flow Water addition Water addition after hammermill •Add water so it can soak •Create homogeneous moisture in each particle, especially after dryer •Controlled flow from hammermill •Conditioner model LL or LT for larger capacities Water addition Moisture measured at inlet of ripening bin with online moisture analyzer Stable moisture for stable process conditions •Optimizes pellet quality •Minimizes energy usage •Provides longer die and roller life Ripening at retention vessel Mixing bin or vertical bin: •Variations in moisture Vertical bin: •Variations in product type •First in first out •Larger volume, longer retention time Mixing bin: •Homogenizes the raw material •Limited retention time Equipment Selection Hammermills Equipment Selection • When selecting a hammermill for wood grinding it is important to use the correct con