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Process and apparatus for burning combustible constituents in process gas in a main combustion enclosure, preferably a thermal post-combustion device, whereby the main combustion enclosure is separated from a combustion chamber, into which oxygenic gas and gaseous fuel are fed, mixed and burnt. The fuel for the apparatus is fed through a lance which opens into a mixing chamber supplied with oxygenic gas, which is either itself the combustion chamber or merges with it, and the outer surface of the combustion chamber is exposed at least partially to the process gas. The fuel is burned completely or nearly completely in the burner combustion chamber and the mixture of burned fuel and gas leaving the combustion chamber oxidizes the combustible constitutes in the process gas flowing outside of the combustion chamber by yielding flameless heat energy to them.

Inventors: Andreas R uhl, Gert Rentzel, Patrick McGehee, Serguei Charamko, Kim Anderson
Original Assignee: W. R. Grace & Co.-Conn.
Current U.S. Classification: 422/173; 110/210; 110/213; 431/5
International Classification: F01N 310

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Citations

Cited PatentFiling dateIssue dateOriginal AssigneeTitle
US3090675May 4, 1962May 21, 1963DIRECT FLAME INCINERATOR
US3311456Mar 21, 19631967APPARATUS FOR INCINERATING A WASTE GAS STREAM
US3549333Jul 23, 1968Dec 22, 1970RECUPERATIVE FORM OF DIRECT THERMAL INCINERATOR
US3637343Apr 26, 1968Jan 2, 1972PATEN TEO JAN
US3806322Jun 29, 1972Apr 23, 1974RECUPERATIVE FORM OF CATALYTIC-THERMAL INCINERATOR
US3838975May 18, 19731974THERMAL INCINERATOR WITH HEAT RECUPERATION
US3898040Dec 26, 19731975RECUPERATIVE FORM OF THERMAL-CATALYTIC INCINERATOR
US4364724Feb 2, 1980Dec 21, 1982Forenade FarbiksverkenMethod and apparatus for dosing an air-fuel mixture in burners having evaporating tubes
US4365951Jun 13, 1980Dec 28, 1982Device for combustion of a volatile fuel with air
US4850857Dec 2, 1986Jul 25, 1989Katec Betz GmbH & Co.Apparatus for the combustion of oxidizable substances suspended in a carrier gas
US5333395Jul 30, 1993Aug 2, 1994VITS Maschinenbau GmbHDrying apparatus
US5425630Nov 4, 1993Jun 20, 1995Kinetic dissociator
USRE34298Aug 28, 1991Jun 29, 1993American Combustion, Inc.Method for waste disposal

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US7722826Sep 10, 2004May 25, 2010Das-Dunnschicht Anlagen Systeme GmbHDisposal device for pollutants
US7727329Feb 28, 2008Jun 1, 2010James Hardie Technology LimitedFiber cement building materials with low density additives
US7744689Feb 24, 2006Jun 29, 2010James Hardie Technology LimitedAlkali resistant glass compositions
US7878026Aug 25, 2003Feb 1, 2011James Hardie Technology LimitedSynthetic microspheres and methods of making same
US7897534Apr 16, 2009Mar 1, 2011Manufacture and use of engineered carbide and nitride composites
US7993570Oct 7, 2003Aug 9, 2011James Hardie Technology LimitedDurable medium-density fibre cement composite
US7998571Jul 11, 2005Aug 16, 2011James Hardie Technology LimitedComposite cement article incorporating a powder coating and methods of making same
US8182606Jun 7, 2010May 22, 2012James Hardie Technology LimitedFiber cement building materials with low density additives

Claims

1. Process for burning in a main combustion enclosure the combustible constituents of a process gas, said main combustion enclosure being separated from but in communication with a burner combustion chamber into which oxygenic gas and fuel are fed, mixed and burnt, said process comprising: feeding said oxygenic gas into an inlet section in communication with said burner combustion chamber, causing said oxygenic gas to swirl prior to mixing it with said fuel, mixing said fuel and said swirling oxygenic gas; directing said mixture into said burner combustion chamber, burning said mixture in said burner combustion chamber, and causing said burnt mixture to exit said burner combustion chamber and to oxidize the combustible constituents in the process gas flowing outside said burner combustion chamber by yielding flameless heat energy to said process gas flowing outside said burner combustion chamber.

2. Process according to claim 1, wherein the swirling oxygenic gas is concentric to and envelopes said fuel.

3. Process according to claim 1, wherein the oxygenic gas and fuel mixture is caused to recirculate in said burner combustion chamber so as to ensure complete combustion of said fuel therein.

4. Process according to claim 1, wherein said oxygenic gas comprises a portion of said process gas.

5. Process for burning in a main combustion enclosure the combustible constituents of a process gas, said main combustion enclosure being separated from but in communication with a burner combustion chamber into which oxygenic gas and fuel are fed, mixed and burnt, said process comprising: introducing said oxygenic gas into a swirl chamber; causing said oxygenic gas to swirl in said swirl chamber; directing said swirling oxygenic gas into a mixing chamber in communication with said swirl chamber; introducing a fuel gas into a mixing chamber in communication with said swirl chamber and with said burner combustion chamber; causing said fuel gas and said swirling oxygenic gas to mix in said mixing chamber; directing said mixture into said burner combustion chamber; burning said mixture in said burner combustion chamber; and causing said burnt mixture to exit said burner combustion chamber and to oxidize the combustible constituents in the process gas flowing outside said burner combustion chamber by yielding flameless heat energy to said process gas.

6. The process of claim 5, wherein said swirling oxygenic gas is concentric to and envelopes said fuel.

7. The process of claim 5, wherein said oxygenic gas comprises a portion of said process gas.

Drawings