Low nitrogen oxides emissions using three stages of fuel oxidation and in-situ furnace flue gas recirculation

Details for Australian Patent Application No. 2001265303 (hide)

Owner Clearstack Combustion Corporation Ashworth, R.

Inventors Ashworth, Robert A.

Agent Watermark

Pub. Number AU-B-2001265303

PCT Pub. Number WO01/94843

Priority 09590408 08.06.00 US

Filing date 1 June 2001

Wipo publication date 17 December 2001

Acceptance publication date 21 December 2006

International Classifications

F23C 6/04 (2006.01) Combustion apparatus characterised by the combination of two or more combustion chambers

F23C 1/02 (2006.01) Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being fluent

F23C 5/32 (2006.01) Combustion apparatus characterised by the arrangement or mounting of burners

F23C 7/00 (2006.01) Combustion apparatus characterised by arrangements for air supply

F23C 9/00 (2006.01) Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber

F23G 5/00 (2006.01) Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels

F23J 7/00 (2006.01) Arrangement of devices for supplying chemicals to fire

F23L 7/00 (2006.01) Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam

F23L 9/04 (2006.01) Passages or apertures for delivering secondary air for completing combustion of fuel

F23L 15/00 (2006.01) Heating of air supplied for combustion

Event Publications

21 December 2006 Application Accepted

  Published as AU-B-2001265303

26 April 2007 Standard Patent Sealed

18 December 2008 Section 223 Application Received

  Clearstack Combustion Corporation; Ashworth, R. An application to extend the time from 01 Dec 2008 to 01 Jan 2009 in which to pay a renewal fee has been filed . Address for service in Australia - Watermark Patent & Trademark Attorneys Level 2 302 Burwood Road Hawthorn VIC 3122 Extensions of Time, Section 223 2005

18 December 2008 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This patent ceased under section 143(a), or Expired. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

12 February 2009 Section 223 Application Allowed

  Clearstack Combustion Corporation; Ashworth, R. The time in which to pay a renewal fee has been extended to 01 Jan 2009. Address for service in Australia - Watermark Patent & Trademark Attorneys 302 Burwood Road Hawthorn VIC 3122 2002

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