Resources Contact Us Home
Method and apparatus for controlled rate feeding of fluidized solids

Image Number 2 for United States Patent #4497598.

The vapor space above a bed of fluidizable particles in a chamber is variably controlled by extending a moveable conduit through the upper portion of the chamber to position the conduit inlet at a selectable height above the bed. Fluid flows uniformly up through the bed of particles to fluidize particles to a desired density in the fluid and at a desired rate of flow of such particles through the inlet to the conduit from the so adjusted volume of fluidization space in the chamber. The conduit is externally driven relative to the bed to maintain the particle fluidization volume and flow rate substantially constant. In apparatus form the pick-up conduit is carried by a piston member with sealing means, such as an O-ring, between the piston wall and the chamber sidewall. In an alternate embodiment the fluidizing gas is recirculated in a loop that includes the piston which is fluid permeable to bypass the conduit inlet. This permits a substantially constant rate of fluid flow to fluidize particles to a desired density, but permits independent control of the rate of flow of fluidized particles out of the chamber.

  Recently Added Patents
Semiconductor device and fabrication method
Rapid glycopeptide optimization via neoglycosylation
Methods and systems for representing missed approach information in perspective view on a cockpit display
Lower set insert with a lower ball seat for a downhole plug
Carbonate and carbamate modified forms of glucocorticoids in combination with .beta..sub.2 adrenergic agonists
Aisle barrier
Method for manufacturing a substrate for a display device
  Randomly Featured Patents
Contact structure and production method thereof
Modular endoscope valve assembly and method
Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof
Intervertebral disc anulus implant
Rotor for a rotary engine
MR imaging system with interactive image contrast control over a network
Flexiblized polyepoxide resins incorporating aliphatic diglycidyl ethers
Device and a method for removing an object from a moulding tool