Wet material is injected via a blow-line into the dryer and pneumatically conveyed through the dryer duct and dried to the required moisture content. High efficiency cyclones separate the fibers from the gas stream. Fibers are discharged via air locks. A portion of the exhaust gases can be reused in dryer installations with recirculation air operation.
When we made our first dryer over 70 years ago, we were driven by exactly what brings you here: We needed a dryer that just workedwe didnt have time to fuss with anything less. We needed a dryer that was reliable, efficient and built with the understanding that capacity is king. So, we made one ourselves. As owner-operators of the same equipment you use, we started and continue making the toughest, longest lasting dryers out there. Were honored to offer that same ingenuity and know-how to you in every wood chip dryer we build today. For you, and for us. Thats Thompson tough. And were sticking to it.
A Thompson Wood Chip Dryer can dry temperature-sensitive, wood chips safely at a high capacity with thermal efficiency around 85%; it does so with minimal air pollution, little material degradation and low fire risk. A Thompson Wood Chip Dryer is the most cost effective and energy efficient wood chip dryer available today. With Thompsons proprietary internal flighting package, the dryer is able to dry both the small and large chips in your product feed uniformly, inside and out, to the desired dryness.
Benefit: Eliminates the need for make up air Creates a consistent gas flow throughout the drying process Allow drying process to use steam as the heat transfer medium Use less fuel because there is no need to heat make up air Reduces total gas volume entering and exiting the system (no make up air) Either eliminates the need for, or reduces the size of secondary cleanup equipment (lower emissions) Reduces the amount of oxygen entering the system (no make up air) Increases consistency of final product quality Allows for lower temperature drying which protects the quality of the end product
Result: Lower fuel usage means lower operational costs Lower emissions means lower capital investment Lower emissions means happier neighbors Consistent high quality products mean happy customers Personnel and equipment are safer because fires and high pressure events are less likely
Result: Lower operational costs Fewer parts to break which means lower maintenance costs Lower capital investment, no airlock here Lower emissions means lower capital investment in secondary cleanup equipment Lower emissions means happier neighbors Personnel and equipment are safer because fires and high pressure events are less likely
Result: Higher revenues from having more product to sell Lower emissions means lower capital investment in secondary cleanup equipment Lower emissions means happier neighbors Personnel and equipment are safer because fires and high pressure events are less likely
Benefit: Provides data from instruments at key points of the system for information and control purposes to run safer and more efficient Handles startups and shutdowns automatically to remove human error Alarms or controls upset conditions automatically Automated fire suppression system (on some systems)
Thompson has created a line of dryers to process wet wood to your requirements. Wood chips are used for a variety of products like paper, cardboard, oriented strand board (OSB), particle board, wafer board, and pellets just to name a few. Below are some specifications for our line of Wood Chip Drying Systems.
Combustion & Burner Assembly Wet solid fuel burner (Waste heat, dry solid fuel, fossil fuels, and other heat sources available) Burner & combustion air fan tied into control system & automated sequences Combustion system meets or exceeds NFPA 86 guidelines
Single pass dryer drum 3/8-in thick shell Internal flight/lifter support arms Tires/tracks: 3-in thick x 10-in wide carbon steel Trunnion wheels: 42-in diameter, 10.25-in wide with guards Trunnion shaft: 8-in diameter thru wheel, steps down to 4-15/16-in Self-adjusting pillow block bearings: 4-15/16-in Drum drive assembly with VFD and guards
Separation and Clean-up Outlet hopper Cyclones: 10-ga high efficiency Clean-out doors in cyclone hoppers and outlet hopper Compressed air inlets in cyclone hoppers Combined outlet hopper and cyclone particle separation from gas stream 99%+
Fans Designed for use in dusty environments AMCA standard 205 & 211 compliant and 210 & 300 tested Fan application category BV-3 and balance quality grade G6.3 Shafts sized for 1.43x max rated speed-ANSI/AMCA 204-96 Heavy duty, self-aligning, pillow block type bearings with AFBMA l-50 > 200,000 hours Clean-out door Drive guard VFD controlled where applicable
XINAN automatic controller uses HOLZMEISTER, such as M800 and M900. HOLZMEISTER series is stable and supports individual programs. About 80 drying programs can be used by the operator for wood drying. Heating, conditional venting and the running direction of the fan are automatically controlled to ensure good drying effect. Wood drying in the kiln can also be controlled by connecting HOLZMEISTER series controller to PC via special software.