Fluidized bed calciner apparatus

Title: Fluidized bed calciner apparatus

Full Record
Other Related Research

Abstract

An apparatus for remotely calcining a slurry or solution feed stream of toxic or hazardous material, such as ammonium diurante slurry or uranyl nitrate solution, is disclosed. The calcining apparatus includes a vertical substantially cylindrical inner shell disposed in a vertical substantially cylindrical outer shell, in which inner shell is disposed a fluidized bed comprising the feed stream material to be calcined and spherical beads to aid in heat transfer. Extending through the outer and inner shells is a feed nozzle for delivering feed material or a cleaning chemical to the beads. Disposed in and extending across the lower portion of the inner shell and upstream of the fluidized bed is a support member for supporting the fluidized bed, the support member having uniform slots for directing uniform gas flow to the fluidized bed from a fluidizing gas orifice disposed upstream of the support member. Disposed in the lower portion of the inner shell are a plurality of internal electric resistance heaters for heating the fluidized bed. Disposed circumferentially about the outside length of the inner shell are a plurality of external heaters for heating the inner shell thereby heating the fluidized bed. Further, connected to the internal and externalmore »« less

Inventors:

Owen, Thomas J. ^[1]; Klem, Jr., Michael J. ^[2]; Cash, Robert J. ^[2]

(West Richland, WA)
(Richland, WA)

Issue Date:: 1988-01-01

Research Org.:: WESTINGHOUSE HANFORD CO

OSTI Identifier:: 866638

Patent Number(s):: 4755138

Assignee:: United States of America as represented by United States (Washington, DC) OSTI

DOE Contract Number:: AC06-76FF02170

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: fluidized; bed; calciner; apparatus; remotely; calcining; slurry; solution; feed; stream; toxic; hazardous; material; ammonium; diurante; uranyl; nitrate; disclosed; vertical; substantially; cylindrical; inner; shell; disposed; outer; comprising; calcined; spherical; beads; heat; transfer; extending; shells; nozzle; delivering; cleaning; chemical; portion; upstream; support; supporting; uniform; slots; directing; gas; flow; fluidizing; orifice; plurality; internal; electric; resistance; heaters; heating; circumferentially; outside; length; external; connected; means; maintaining; temperature; plus; minus; approximately; 25; degree; predetermined; providing; radiative; reflection; radiative heat; bed temperature; nitrate solution; uranyl nitrate; external heat; fluidizing gas; cylindrical outer; hazardous material; inner shell; outer shell; feed material; gas flow; fluidized bed; heat transfer; feed stream; substantially cylindrical; spherical beads; electric resistance; solution feed; cylindrical inner; disposed circumferentially; feed nozzle; resistance heat; resistance heater; /432/110/976/

Citation Formats


                    Owen, Thomas J., Klem, Jr., Michael J., and Cash, Robert J. Fluidized bed calciner apparatus.  United States: N. p., 1988. 
        Web.

Copy to clipboard


                    Owen, Thomas J., Klem, Jr., Michael J., & Cash, Robert J. Fluidized bed calciner apparatus.  United States.

Copy to clipboard


                    Owen, Thomas J., Klem, Jr., Michael J., and Cash, Robert J. Fri .  
        "Fluidized bed calciner apparatus".  United States.  https://www.osti.gov/servlets/purl/866638.

Copy to clipboard


                    
@article{osti_866638,

  title        = {Fluidized bed calciner apparatus},

  author       = {Owen, Thomas J. and Klem, Jr., Michael J. and Cash, Robert J.},

  abstractNote = {An apparatus for remotely calcining a slurry or solution feed stream of toxic or hazardous material, such as ammonium diurante slurry or uranyl nitrate solution, is disclosed. The calcining apparatus includes a vertical substantially cylindrical inner shell disposed in a vertical substantially cylindrical outer shell, in which inner shell is disposed a fluidized bed comprising the feed stream material to be calcined and spherical beads to aid in heat transfer. Extending through the outer and inner shells is a feed nozzle for delivering feed material or a cleaning chemical to the beads. Disposed in and extending across the lower portion of the inner shell and upstream of the fluidized bed is a support member for supporting the fluidized bed, the support member having uniform slots for directing uniform gas flow to the fluidized bed from a fluidizing gas orifice disposed upstream of the support member. Disposed in the lower portion of the inner shell are a plurality of internal electric resistance heaters for heating the fluidized bed. Disposed circumferentially about the outside length of the inner shell are a plurality of external heaters for heating the inner shell thereby heating the fluidized bed. Further, connected to the internal and external heaters is a means for maintaining the fluidized bed temperature to within plus or minus approximately 25.degree. C. of a predetermined bed temperature. Disposed about the external heaters is the outer shell for providing radiative heat reflection back to the inner shell.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1988},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Fluidized-bed calciner with combustion nozzle and shroud

Patent Wielang, Joseph A. (Idaho Falls, ID); Palmer, William B. (Shelley, ID); Kerr, William B. (Idaho Falls, ID)

A nozzle employed as a burner within a fluidized bed is coaxially enclosed within a tubular shroud that extends beyond the nozzle length into the fluidized bed. The open-ended shroud portion beyond the nozzle end provides an antechamber for mixture and combustion of atomized fuel with an oxygen-containing gas. The arrangement provides improved combustion efficiency and excludes bed particles from the high-velocity, high-temperature portions of the flame to reduce particle attrition.
Full Text Available
Electrode assembly for a fluidized bed apparatus

Patent Schora, Jr., Frank C. (Palatine, IL); Matthews, Charles W. (Pittsburgh, PA); Knowlton, Ted M. (Hinsdale, IL)

An electrode assembly comprising a high voltage electrode having a generally cylindrical shape and being electrically connected to a high voltage source, where the cylinder walls may be open to flow of fluids and solids; an electrically grounded support electrode supporting said high voltage electrode by an electrically insulating support where both of the electrically grounded and electrically insulating support may be hollow; and an electrically grounded liner electrode arranged concentrically around both the high voltage and support electrodes. This assembly is specifically adapted for use in a fluidized bed chemical reactor as an improved heating means therefor.
Full Text Available
Method and apparatus for gasifying with a fluidized bed gasifier having integrated pretreating facilities

Patent Rice, Louis F. (Arcadia, CA)

An integral gasifier including a pretreater section and a gasifier section separated by a distribution grid is defined by a single vessel. The pretreater section pretreats coal or other carbon-containing material to be gasified to prevent caking and agglomeration of the coal in the gasifier. The level of the coal bed of the pretreater section and thus the holding or residence time in said bed is selectively regulated by the amount of pretreated coal which is lifted up a lift pipe into the gasifier section. Thus, the holding time in the pretreater section can be varied according to the amountmore »« less
Full Text Available
Method of and apparatus for preheating pressurized fluidized bed combustor and clean-up subsystem of a gas turbine power plant

Patent Cole, Rossa W. (E. Rutherford, NJ); Zoll, August H. (Cedar Grove, NJ)

In a gas turbine power plant having a pressurized fluidized bed combustor, gas turbine-air compressor subsystem and a gas clean-up subsystem interconnected for fluid flow therethrough, a pipe communicating the outlet of the compressor of the gas turbine-air compressor subsystem with the interior of the pressurized fluidized bed combustor and the gas clean-up subsystem to provide for flow of compressed air, heated by the heat of compression, therethrough. The pressurized fluidized bed combustor and gas clean-up subsystem are vented to atmosphere so that the heated compressed air flows therethrough and loses heat to the interior of those components before passingmore » to the atmosphere.« less
Full Text Available
Heat exchanger support apparatus in a fluidized bed

Patent Lawton, Carl W. (West Hartford, CT)

A heat exchanger is mounted in the upper portion of a fluidized combusting bed for the control of the temperature of the bed. A support, made up of tubes, is extended from the perforated plate of the fluidized bed up to the heat exchanger. The tubular support framework for the heat exchanger has liquid circulated therethrough to prevent deterioration of the support.
Full Text Available

Similar Records