Ash control valve for a circulating fluidized bed combustor

Details Ash control valve for a circulating fluidized bed combustor Ash control valve for a circulating fluidized bed combustor

1996-12-09

1998-05-19

Kwon, John T.

Furnaces

Ash receiving and handling devices

Fly ash disposers

110169, F23J 100

Patent

active

057524513

ABSTRACT:
An ash control valve apparatus, for use in a system that includes a fluidized-bed system, including a housing, a seat in the housing for passage of particulate material, a plug dimensioned and configured for mating engagement with the seat; and apparatus for moving the plug from a first position wherein the plug is disposed in seated engagement with the seat and a second position wherein the plug is disposed in spaced relationship to the seat. The apparatus for moving the plug includes apparatus for mounting the plug, that includes an elongated tube to which the plug is fixed. The apparatus for axially moving the tube includes a cylinder and piston assembly; and a clamp engaging the tube and operatively connected to the cylinder of the cylinder and piston assembly. In some forms of the invention the apparatus for mounting includes at least a one or two linear motion bearings and first and second shafts cooperating respectively with the first and second linear motion bearings as well as first and second beams disposed for supporting respectively the first and second shafts.

REFERENCES:
patent: 1758157 (1930-05-01), James
patent: 2944494 (1960-07-01), Mary
patent: 3933103 (1976-01-01), Mikkelsen
patent: 4538530 (1985-09-01), Whitman
patent: 5259123 (1993-11-01), Garcia-Mallol
patent: 5642676 (1997-07-01), Schaker et al.

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