Burner

Patent metadata

Field	Value
Publication number	US-2024255139-A1
Application number	US-202218561245-A
Country	US
Kind code	A1
Filing date	May 16, 2022
Priority date	May 17, 2021
Publication date	Aug 1, 2024
Grant date	—

Abstract

The present application relates to a burner for a shaft melting furnace, in particular for a copper shaft melting furnace, comprising a first chamber with an inlet opening, via which an oxygen-containing gas can be supplied to the burner, and an outlet opening, which is arranged at a distal end of a conically tapering sub-portion of the first chamber; a second chamber, which is connected to the conical sub-portion of the first chamber and which has a burner nozzle; a combustion gas line, which opens into the first chamber and via which a combustion gas can be supplied to the burner; and a mixing nozzle, which is arranged in the outlet opening of the first chamber and which has a mixing chamber via which the oxygen-containing gas and the combustion gas can be mixed to form a combustion gas mixture.

First claim

1 .- 15 . (canceled)

16 . A burner ( 1 ) for a shaft melting furnace, comprising:
a first chamber ( 4 ) with
an inlet opening ( 14 ), via which an oxygen-containing gas can be supplied to the burner ( 1 ), and
an outlet opening ( 16 ), which is arranged at a distal end of a conically tapering sub-portion ( 5 ) of the first chamber ( 4 );
a second chamber ( 6 ), which is connected to the conically tapering sub-portion ( 5 ) of the first chamber ( 4 ) and which has a burner nozzle ( 7 ); a combustion gas line ( 21 ), which opens into the first chamber ( 4 ) and via which a combustion gas can be supplied to the burner ( 1 ); and a mixing nozzle ( 19 ), which is arranged in the outlet opening ( 16 ) of the first chamber ( 4 ) and which has a mixing chamber ( 20 ) via which the oxygen-containing gas and the combustion gas can be mixed to form a combustion gas mixture.

17 . The burner ( 1 ) according to claim 16 ,
wherein the combustion gas line ( 21 ) opens into the conically tapering sub-portion ( 5 ) of the first chamber ( 4 ).

18 . The burner ( 1 ) according to claim 16 ,
wherein the mixing nozzle ( 19 ) comprises a plurality of blades ( 32 , 34 ), which are arranged in the mixing chamber ( 20 ), and wherein the mixing chamber ( 20 ) is annular.

19 . The burner ( 1 ) according to claim 18 ,
wherein the annular mixing chamber ( 20 ) comprises
a first set of blades ( 32 ) arranged radially outwardly and
a second set of blades ( 34 ) arranged radially inwardly,
wherein blades of the first set of blades ( 32 ) are arranged in opposite direction to blades of the second set of blades ( 34 ).

20 . The burner ( 1 ) according to claim 16 , further comprising
an observation device ( 9 ) with a viewing axis ( 28 ) extending through the first chamber ( 4 ), the mixing nozzle ( 19 ), the second chamber ( 6 ) and the burner nozzle ( 7 ), via which a flame chamber of the shaft melting furnace can be monitored.

21 . The burner ( 1 ) according to claim 20 ,
wherein the observation device ( 9 ) comprises a tube ( 22 ) that extends axially through the first chamber ( 4 ), wherein a first end ( 24 ) of the tube ( 22 ) is arranged outside the burner ( 1 ) and comprises an inspection glass ( 25 ) and/or a camera module ( 10 ), and wherein a second end ( 26 ) of the tube ( 22 ) is arranged in a central opening ( 27 ) of the mixing nozzle ( 19 ).

22 . The burner ( 1 ) according to claim 21 ,
wherein the combustion gas line ( 21 ) is arranged coaxially around the tube ( 22 ) of the observation device ( 9 ) and comprises at its end oriented towards the mixing nozzle ( 19 ) a plurality of nozzle openings ( 23 ), which are arranged distributed over a circumference thereof.

23 . The burner ( 1 ) according to claim 16 ,
wherein the burner nozzle ( 7 ) comprises a plurality of guide blades ( 36 ), which are arranged in a front region of the burner nozzle ( 7 ).

24 . The burner ( 1 ) according to claim 16 ,
wherein the burner nozzle ( 7 ) comprises a conically tapering outlet opening ( 38 ), which is arranged in a rear region of the burner nozzle ( 7 ).

25 . The burner ( 1 ) according to claim 24 ,
wherein the conically tapering outlet opening ( 38 ) has an edge ( 39 ) having a serrated structure provided with recesses ( 40 ).

26 . The burner ( 1 ) according to claim 16 ,
wherein the mixing nozzle ( 19 ) and/or the burner nozzle ( 7 ) is made of silicon carbide.

27 . The burner ( 1 ) according to claim 16 ,
further comprising at least two measuring connections ( 11 , 12 ).

28 . The burner ( 1 ) according to claim 16 ,
further comprising a radiant tube ( 8 ) consisting of silicon carbide (SiC).

29 . A copper shaft melting furnace, comprising at least one burner ( 1 ) according to claim 16

30 . The shaft melting furnace according to claim 29 , wherein the at least one burner ( 1 ) is arranged at an inclined angle with respect to a horizontal line in a wall of the shaft melting furnace.

Assignees

• Sms Group Gmbh

Inventors

• Klumbies Björn
• Gesche Günter

Classifications

• F27D2099/0045

  Radiant burner · CPC title

• F27D99/0033 Primary

  using burners · CPC title

• F27B1/08

  heated otherwise than by solid fuel mixed with charge · CPC title

• F23D2900/14241

  Post-mixing with swirling means · CPC title

• F23D2900/14021

  Premixing burners with swirling or vortices creating means for fuel or air · CPC title