Swirling burners for use in hot blast stoves
AssigneeNippon Kokan Kabushiki Kaisha
InventorsRyo Ando, Kazuo Sano, Takao Miyazaki
Life of this patent
Estimating the term…
Abstract
The swirling burner comprises a vertical combustion chamber and an annular blast member located beneath the combustion chamber and provided with a central cylindrical space and a plurality of alternately superposed fuel gas passages and air passages. These passages are communicated with the cylindrical space through blow openings which are inclined in the same direction with respect to the radii of the cylindrical space. In a modification, the burner is further combined with straight blowing type burner for promoting the effect of the air-gas mixing.
Claims8
In a swirling burner for use in a hot blast stove, comprising:
- a vertical combustion chamber;
- and
- an annular blast member located beneath said combustion chamber substantially in coaxial relationship therewith for forming a swirling flow of a gas and air mixture, said annular blast member including:
- a central cylindrical space;
- a plurality of fuel gas passages and a plurality of air passages arranged about said cylindrical space;
- and a plurality of fuel gas openings and air blow openings respectively connected to said fuel gas and said air passages;
- the improvement wherein:
- the diameter of said cylindrical space is smaller than that of said combustion chamber;
- said plurality of fuel gas and air passages are vertically alternately superposed above one another;
- and
- said fuel gas and said air blow openings directly open into said cylindrical space and are inclined in the same horizontal direction with respect to the radii from the axis of said cylindrical space, and are further inclined with respect to the vertical axis of said cylindrical space.
Dependencies are inferred from the claim text.