System, apparatus, and method for reducing moisture content of particulate material
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United States of America Patent
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Jul 1, 2003
Grant Date -
N/A
app pub date -
Jan 17, 2002
filing date -
Jun 16, 2000
priority date (Note) -
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Abstract
A system for drying particulate material in a drying hopper (DH) has a plurality of gas flow paths, one (FP1) of which extends from a compressed gas inlet (16) to a first sub-system (SS1) that includes a membrane dryer(MD) and a heater (EH'), whereby dried and heated gas is supplied to a lower portion (36) of the hopper, and another (FP2) of which extends from the inlet (16) to a second sub-system (SS2) that includes a mixing device (30) and a heater (EH). The mixing device uses compressed gas to induce a flow of gas from the hopper and mixes the compressed gas with gas withdrawn from the hopper. The mixed gases are heated and supplied to a second portion (34) of the hopper.
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