Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1982-06-23
1984-11-13
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 54, 34 86, 34115, F26B 1308
Patent
active
044817223
ABSTRACT:
A system for drying a wet web of fibrous material carried through a rotary dryer on an air pervious support, without damage to the rotary dryer or the air pervious support in the event of an upset to the system comprising in combination (1) heater means for producing hot air; (2) a dryer unit, (3) an air mixer or heat exchanger for providing hot air at the desired temperature to the input section of the dryer; (4) recycle means for carrying air exiting the air output section of the dryer unit to the air mixer or heat exchanger; (5) a first line for carrying the hot air from the heater means to the air mixer or heat exchanger; (6) a first normally open damper means on the first line; (7) a second line for venting hot air away from the system; and (8) a second normally closed damper means on the second line, wherein when an upset in the system occurs, the hot air produced by the heater means and normally carried to the air mixer or heat exchanger is vented away from the system by opening the second normally closed damper means on the second line and closing the first normally open damper means on the first line.
REFERENCES:
patent: 3021607 (1962-02-01), Fleissner
patent: 3849904 (1974-11-01), Villalobos
patent: 4103434 (1978-08-01), Walker
patent: 4231165 (1980-11-01), Gresens
patent: 4326342 (1982-04-01), Schregenberger
patent: 4328626 (1982-05-01), Leitner
patent: 4343096 (1982-08-01), Bergland
Ball Robert S.
Guy Fredrick A.
Croft Gregory E.
Kimberly-Clark Corporation
Schwartz Larry I.
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