U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Apparatus for treating or utilizing a hot gas flow

Patent 5505907 Issued on April 9, 1996. Estimated Expiration Date: Icon_subject June 22, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Method of recovering heat of combustion waste gas arising from glass tank furnace
Patent #: 4119395
Issued on: 10/10/1978
Inventor: Hatanaka ,   et al.

Solids quench boiler
Patent #: 4356151
Issued on: 10/26/1982
Inventor: Woebcke ,   et al.

Fluidized bed reactor
Patent #: 4753177
Issued on: 06/28/1988
Inventor: Engstrom ,   et al.

Process for circulating solid particles within a fluidization chamber and fluidization chamber for carrying out the process
Patent #: 4770237
Issued on: 09/13/1988
Inventor: Morin ,   et al.

Fluidized bed reactor having an integrated recycle heat exchanger
Patent #: 4896717
Issued on: 01/30/1990
Inventor: Campbell, Jr., et al.

Circulating fluid bed reactor
Patent #: 5167932
Issued on: 12/01/1992
Inventor: Ruottu

Circulating fluidized bed reactor
Patent #: 5171542
Issued on: 12/15/1992
Inventor: Sarkomaa

Process for cooling a hot process gas
Patent #: 5205350
Issued on: 04/27/1993
Inventor: Hirsch, et al.

Circulating fluidized bed process for cooling gases
Patent #: 5226475
Issued on: 07/13/1993
Inventor: Ruottu

Centrifugal separator
Patent #: 5281398
Issued on: 01/25/1994
Inventor: Hyppanen, et al.

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Inventors

Assignee

Application

No. 265041 filed on 06/22/1994

US Classes:

422/146, With heat exchange means affecting reaction chamber or reactants located therein122/4D, Catalyst165/104.16, Fluidized bed165/104.18, Including means to move heat exchange material422/145, And means providing flow of particulate matter into or out of reaction chamber422/147And means mechanically separating and removing particulate bed material from fluid effluent

Examiners

Primary: Warden, Robert J.
Assistant: Tran, Hien

Attorney, Agent or Firm

Foreign Patent References

  • 2086674 CA. 01/22/1992
  • 64997 FI 08/22/1986
  • 2140144 GB 11/22/1984
  • WO94/11691 WO. 05/22/1994

International Classes

F27B 015/16
F28D 013/00

Foreign Application Priority Data

1993-06-23 FI

Abstract

A method and apparatus for cooling hot gas in a reactor in which the lower section of the reactor is provided with an inlet for hot gas and a chamber encompassing a bubbling fluidized bed. A central section of the reactor is provided with a riser, and the upper section with a gas outlet, and the reactor has heat transfer surfaces for recovering heat from solid particles. The riser is defined by vertical walls which are disposed above the bubbling fluidized bed so that they divide the fluidized bed into concentric outer and inner parts. From the inner part of the fluidized bed solid particles are supplied to the hot inlet gas for cooling thereof. The gas containing solid particles is conveyed through the riser into the upper section of the reactor, where solid particles are separated from the gas in a particle separator and returned to the fluidized bed into the outer part thereof.

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