Process and apparatus for continuously conveying particulate compressible fibrous material from a zone at a first gas pressure to a zone at a second gas pressure
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United States of America Patent
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Jun 23, 1981
Grant Date -
N/A
app pub date -
Feb 7, 1979
filing date -
Feb 10, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process and apparatus are provided for continuously conveying particulate compressible fibrous material from a first zone at a first gas pressure to a second zone at a second gas pressure with a pressure differential therebetween of at least 0.5 bar while retaining the prevailing gas pressure in each zone, which comprises: (1) continuously compressing the particulate material in the first zone into a gas-containing but gas-impermeable mass extending across the interface between the two zones; (2) continuously passing the mass of material out from the first zone into the second zone while maintaining the gas pressure within the mass constant at the gas pressure of the first zone; and (3) continuously breaking up the mass entering the second zone into particulate material.
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