Method and apparatus for monitoring and controlling the drying p

Details Method and apparatus for monitoring and controlling the drying p Method and apparatus for monitoring and controlling the drying p

1978-05-15

1980-05-27

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 48, 34 52, 34 44, F26B 304

Patent

active

042043379

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.

REFERENCES:
patent: 2442148 (1948-05-01), Rose
patent: 2758386 (1956-08-01), Cobb
patent: 2799096 (1957-07-01), Scott
patent: 3078587 (1963-02-01), Huck
patent: 3259995 (1966-07-01), Powischill
patent: 3961425 (1976-06-01), Swanson et al.

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