Method And Device For Drying A Flow Of Biomass Particles
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Oct 24, 2005
filing date -
Oct 22, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and a system to be used in the process of manufacturing plates, such as fibreboards, particleboards and the like boards, where the raw material in the form of biomass particles, such as wood fibres or wood particles of various size and shape are dried from its natural moisture content to a moisture content suitable to be applied with a thermosetting binder and be spread onto a movable forming belt to form a mat, and where said mat by means of a hot press is compressed into the desired thickness of the finished plate and the thermosetting binder is hardened. According to the invention, the drying process of the biomass particles is facilitated by the use of ultrasound to remove the sub-layer of air at the surface of the particles and thus to intensify the transport of heat energy into the particles and the transport of moisture from the particles.
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