Method and apparatus for monitoring and controlling the drying profile in a continuous-operation multi-zone drier
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United States of America Patent
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-
May 27, 1980
Grant Date -
N/A
app pub date -
May 15, 1978
filing date -
May 14, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Plyboard or the like passes through the successive drying zones of a multone drier, has a varying initial moisture content and presents to the drier a fluctuating degree of loading (surface area). The drying action is varied by adjusting the drying-gas temperature and/or the transport speed of the goods through the drier, so as to quickly match the drying action to the fluctuating drying demand. Instead of measuring initial moisture content per se and degree of loading (surface area) per se, temperature measurements are performed, from which equivalent information is derived, and from which in turn are calculated the values of drying-gas temperature and/or transport speed which must be set on the temperature and speed controllers of the drier.
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