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Apparatus and method for introducing solids into a solids upflow vessel

  • US 4,295,773 A
  • Filed: 11/09/1979
  • Issued: 10/20/1981
  • Est. Priority Date: 11/09/1979
  • Status: Expired due to Term
First Claim
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1. An apparatus for introducing particulate solids upwardly into a solids upflow vessel having a bottom solids inlet, which comprises:

  • a stationary feed cylinder mounted below said upflow vessel in coaxial alignment with said solids inlet, said feed cylinder having a substantially solids-tight upper cylindrical section of a preselected height and a lower cylindrical section having at least one solids inlet opening;

    at least one solids feed chute mounted adjacent said upflow vessel and having a discharge end communicating with said feed cylinder through said inlet opening, said feed chute having an inlet end communicating with an elevated feed reservoir and being adapted to transport particulate solids from said feed reservoir into said lower section by mechanically unassisted gravity flow through said feed chute;

    a piston movably mounted in said feed cylinder for vertical reciprocation along the common axis of said feed cylinder and said solids inlet;

    piston actuator means for reciprocating said piston along said common axis;

    backflow prevention means interposed between said feed cylinder and said solids inlet, said backflow prevention means being adapted to prohibit backflow of solids from said upflow vessel during the filling of said feed cylinder and to allow displacement of solids from said feed cylinder upwardly through said solids inlet; and

    sealing means for sealing the inlet opening of said feed cylinder during the displacement of said solids into said upflow vessel.

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