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Drying method and apparatus

  • US 3,324,567 A
  • Filed: 07/19/1965
  • Issued: 06/13/1967
  • Est. Priority Date: 07/19/1965
  • Status: Expired due to Term
First Claim
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1. A METHOD FOR REMOVING LIQUID FROM A LIQUID DISPERSION AND CONCURRENTLY FORMING DRIED AGGLOMERATES, SAID METHOD INCLUDING THE FOLLOWING STEPS:

  • PROVIDING A DRYING CHAMBER, INTRODUCING AIR TO THE CHAMBER AT PREDETERMINED SPEED, TEMPERATURE AND HUMIDITY, AND CIRCULATING SUCH AIR IN THE CHAMBER, PARTIALLY REMOVING LIQUID FROM THE LIQUID DISPERSION BY SPRAYING THE LIQUID DISPERSION INTO THE CHAMBER FROM THE CENTER THEREOF IN A PATTERN HAVING THE GENERAL SHAPE OF A HOLLOW CONE, PROVIDING A SOURCE, EXTERIORLY OF THE CHAMBER, OF NON-COHESIVE PARTICLES OF A SUBSTANCE COMPATIBLE WITH THE DRIED AGGLOMERATES, AND CAUSING THE NON-COHESIVE PARTICLES TO COLLIDE WITH AND ADHERE TO PARTIALLY DRIED PARTICLES OF THE SPRAYED LIQUID DISPERSION TO FORM AGGLOMERATES BY EJECTING A STREAM OF GAS HAVING SUCH NON-COHESIVE PARTICLES ENTRAINED THEREIN INTO THE CHAMBER FROM A POSITION SUBSTANTIALLY ALIGNED WITH THE AXIS OF THE HOLLOW CONE PATTERN OF THE SPRAYED LIQUID DISPERSION, SAID PATH OF ENTRAINED NON-COHESIVE PARTICLES BEING IN A DIRECTION TO INTERSECT THE PATH OF THE SPRAYED LIQUID DISPERSION SUCH THAT THE SPRAYED LIQUID DISPERSION AND THE DRIED PARTICLES HAVE SUBSTANTIAL OPPOSITELY DIRECTED COMPONENTS OF VELOCITY.

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