US PATENT SUBCLASS 34 / 374
.~.~.~.~ Additional flow is countercurrent

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
359  DF  .~ With fluid current conveying or suspension of treated material {3}
372  DF  .~.~ Spray drying and cooling of slurry or suspension {1}
373  DF  .~.~.~ With contact with additional gas or vapor flow {1}
374.~.~.~.~ Additional flow is countercurrent

DEFINITION

Classification: 34/374

Additional flow is countercurrent:

(under subclass 373) Process wherein the additional gas or vapor flow is directed either totally or partially against the direction of flow of the atomized solid-liquid stream.