Burner
AssigneeN.V. Nederlandse Gasunie
InventorArnold N. Bogtstra
Life of this patent
Estimating the term…
Abstract
Burner for a gaseous fuel, provided with separate supply lines for fuel and oxidizing gas, the oxidizing gas being tangentially fed into a cylindrical swirl chamber, which is connected to a burner bowl through a mixing channel, the fuel being radially supplied at the connection of the swirl chamber to the mixing channel. The burner is optionally provided with an integrated heat exchanger. A composite burner system is disclosed, made-up of burners as described above and optionally provided with a plate which isolates the burners from the surrounding area and which indirectly heats the surrounding area.
Claims22
A burner for a gaseous fuel, comprising:
- a swirl chamber, in the form of a right cylinder, defined by a side wall, a bottom face and a top face, said top face defining a top opening of said swirl chamber,
- walls defining a burner bowl disposed on an axis of the swirl chamber, the burner bowl opening to a top surface of the burner,
- walls defining a mixing channel connecting the top opening of the swirl chamber to the burner bowl,
- at least one supply line for supplying an oxidizing gas to the swirl chamber through the side wall thereof, the supply line being disposed generally tangentially to the side wall of the swirl chamber, and
- a fuel supply line disposed coaxially with the swirl chamber,
- wherein the fuel supply line extends through the swirl chamber into the mixing channel and includes, near the opening in the top face of the swirl chamber, outflow openings for introducing fuel into the mixing channel, and
- wherein the cross-section of the swirl chamber transverse to the axis thereof has a larger area than the cross-section at the opening in the top face of the swirl chamber.
A closed composite burner system including a plurality of adjoining burners, each said burner comprising:
- a swirl chamber, in the form of a right cylinder, defined by a side wall, a bottom face and a top face, said top face defining an opening in said swirl chamber,
- walls defining a burner bowl disposed on an axis of the swirl chamber, the burner bowl opening to a top surface of the burner, the burner bowl being connected to said swirl chamber,
- walls defining a mixing channel connecting the swirl chamber with the burner bowl,
- at least one supply line for supplying an oxidizing gas to the swirl chamber, the supply line opening tangentially into the side wall of the swirl chamber, and
- a fuel supply line disposed coaxially with the swirl chamber,
- wherein the fuel supply line extends through the swirl chamber into the mixing channel and includes, near the opening in the top face of the swirl chamber, outflow openings for introducing fuel into the mixing channel, and
- wherein the cross-section of the swirl chamber transverse to the axis thereof has a larger area than the cross-section at the opening in the top face of the swirl chamber.
A process for heating an object using a burning system, the burning system including a plurality of burners, each burner including:
- a swirl chamber, in the form of a right cylinder, defined by a side wall, a bottom face and a top face, said face defining an opening in said swirl chamber;
- walls defining a burner bowl disposed on an axis of the swirl chamber, the burner bowl opening to a top surface of the burner, the burner bowl being connected to said swirl chamber;
- walls defining a mixing channel connecting the swirl chamber with the burner bowl;
- at least one supply line for supplying an oxidizing gas to the swirl chamber, the supply line opening tangentially into the side wall of the swirl chamber, and a fuel supply line disposed coaxially with the swirl chamber, said fuel supply line extending through the swirl chamber into the mixing channel and including, near the opening in the top face of the swirl chamber, outflow openings for introducing fuel into the mixing channel, and the cross-section of the swirl chamber transverse to the axis thereof having a larger area than the cross-section at the opening in the top face of the swirl chamber, the process including:
- ensuring that an object is disposed adjacent the burner system with a gap therebetween, said gap being 10 mm or less, and
- heating the object with the burner system.
Dependencies are inferred from the claim text.