US2773682A

US2773682A - Burner support for open hearth furnaces

Info

Publication number: US2773682A
Application number: US332008A
Authority: US
Inventors: Charles J Barkley
Original assignee: United States Steel Corp
Current assignee: United States Steel Corp
Priority date: 1953-01-19
Filing date: 1953-01-19
Publication date: 1956-12-11
Anticipated expiration: 1973-12-11

Description

Dec. 1l, 1956 c. J. BARKLEY 2,773,682

BURNER SUPPORT RoR OPEN HEARTH FURNACES Filed Jan. 19. 1953 :i :inserts-sheet 1 Dec. 11, 1956 Y c. J. BARKLEY 2,773,682

BURNER SUPPORT PoR OPEN HEARTHFURNACES Filed Jan. 19. 1953 3 Sheets-Sheet 2 @Amm/@0% Dec. 1l, 1956 c. J. BARKLEY BURNER SUPPORT FOR OPEN HEARTH FURNAOES Filed Jan. 19. 195s 5 Sheets-Sheet 5 FIGA- Inventar: C14/m55 J. 54m/EK BURNERSUPPORTFOR OPEN HERTHJ FURNACES Charles I. Barkley, Orem, Utah,- assignortoUni-ted States` SteelsCorporationfa corporation yof New Jersey 'Application January 19, 1953, S'eriaPNo.L 332,008? 6Claims. (Cl. 263-15) This invention`relates to a burner support for open hearth furnaces for produciugsteel.A` Silchxfurnaces are off-the regenerative type and in many instanceshave a burner located at each end of the furnace on they center line. thereofV between two ports or uptakes. The conventional support for the burners includes two -vertical refractory walls supported by a refractory sprung arch. Normally, a second or Wearing arch is provided to protect the first arch fromv damage due to heat, velocity of thefgases andwerosion, Whenthe archesferode. andfail it is necessary to shut down the furnace. Other disadvantages due to this type of support include inaccessibility for minor repairs, air leakage and restricted gas flow due to the large mass of brick work required.

It is therefore an object of my invention to provide a burner support which is readily accessible and which eliminates the need of a sprung supporting arch.

This and other objects will be more apparent after referring to the following specification and attached drawings, in which:

Figure 1 is a sectional plan view of an open hearth furnace showing the arrangement of the burners;

Figure 2 is an enlarged view of a portion of Figure l showing the burner support at one end of the furnace;

Figure 3 is a sectional view taken on the line IIL-Ill of Figure 2; and

Figure 4 is a sectional view taken on the line IV-IV of Figure 3.

Referring more particularly to the drawings, the reference numeral 2 indicates an end of an open hearth furnace. A plurality of buckstays 4 are arranged at the end of the furnace in spaced apart relationship. A burner 6 is arranged on the longitudinal center line of the furnace. The uptake from the checker chambers is divided into two passageways 8 by means of a central burner 4support 10, commonly called the dog house. The support for the dog house consists of a pair of spaced apart channels 12 and a second pair of spaced apart channels 14 arranged above the channels 12. One end of each of the

channels

12 and 14 is attached to the buckstays 4 by means of angles 15 and the other end is attached to a chill diaphragm or support 16. The two lower channels 12 serve as a support for a suspended arch 18. Vertical hangers 20 extend between and are supported by

channels

12 and 14 and are provided with lintels 22 for supporting the side walls 24 of the dog house. Vertical supports 26 extend upwardly from and are supported by each channel 14. The support 26 supports a cooler 28 for the burner. Lintels 30 on the supports 26 also serve to support the walls 24. A refractory wall 32 connects the wall 24 at the top thereof. The opening provided by the arch 18, the walls 24 and cooler 28 or wall 32 is of such size that a workman may easily enter from the outside of the furnace in order to repair the refractory or seal it from air inltration.

While one embodiment of my invention has been shown and described it will be apparent that other adaptations Patenten!1 Dec. 11131956*- and modifications may be made'without departingfrom* the'scope of the followingclaims.'

I claim: K

1. In anV openhearthfurn'ace having'a'plurali'ty of" buckstays atione end,` ach'ill structure"spaced'inwardly; from the end of said furnace, an uptake from the regenerar tivechamber between theend' ofthe furnace and the"4 chill structure', anda burner supporting structuredividv ing saiduptakev into two`passageways; `the improvement' comprising a box-like metallic linerb'urnersupporting-` structure having one end connected tosaid b'uck'staysa'nd the other end connected to said chill 'structurega refractory" arch suspended from the'bottom'ofsaid"bbxeliket metallic' supporting structure, a verticalfrefactory wall'lfastened to each side of saidbox-likemetallic supportingstruc'' ture, and a refractory wallconnecting theitop's of said vertical refractory walls'.

2. Inan'open` hearth furnacehaving a plurality'ofbuckstays at one end, a chillstru'ctur'ey` spaced'inwardlyi fromthe end of said' furnace, an uptake-from the regenerative `chamber between the endof the furnace and the' chill structure, and a burner supporting structure dividingsaid uptake*v into -two'passagew`ays; the improvement com-` prising a hollow box-like metallicI liner burner support ing structure having one end connected to said buckstays and the other end connected to said chill structure, a refractory arch suspended from the bottom of said box-like metallic supporting structure, a vertical refractory wall fastened to each side of said box-like metallic supporting structure, and a refractory wall connecting the tops of said vertical refractory walls, the opening in said box-like metallic supporting structure being of sutlicient size to enable a workman to pass therethrough, said opening being open to the outside of said furnace.

3. In an open hearth furnace having a plurality of buckstays at one end, a chill structure spaced inwardly from the end of said furnace, an uptake from the regenerative chamber between the end of the furnace and the chill structure, and a burner supporting structure dividing said uptake into two passageways; the improvement comprising bottom structural members having one end connected to said buckstays and the other end connected to said chill structure, top structural members having one end connected to said buckstays and the other end connected to said chill structure, said top and bottom structural members forming a liner, a refractory arch suspended from the bottom structural members, a vertical refractory Wall on each side of said structural members fastened thereto, and a refractory wall connecting the tops of said vertical refractory walls.

4. In an open hearth furnace having a plurality of buckstays at one end, a chill structure spaced inwardly from the end of said furnace, an uptake from the regenerative chamber between the end of the furnace and the chill structure, and a burner supporting structure dividing said uptake into two passageways; the improvement comprising bottom structural members having one end connected to said buckstays and the other end connected t0 said chill structure, top structural members having one end connected to said buckstays and the other end connected to said chill structure, said top and bottom structural members forming a liner, a refractory arch suspended from the bottom structural members, a vertical refractory wall on each side of said structural members fastened thereto, and a refractory wall connecting the tops of said vertical refractory walls, the opening defined by said top and bottom and refractory walls being open to the outside of said furnace.

5. ln an open hearth furnace having a plurality of buckstays at one end, a chill structure spaced inwardly from the end of said furnace, an uptake from the regenerative chamber lbetween the end of the furnace and the chill structure, and a burner supporting structure dividing said uptake into two passageways; the improvement comprising a pair of channels spaced apart transversely of the furnace, means for fastening one end of each of said channels to said buckstays, means Yfor fastening the other end of each of said channels to said chill structure, a second pair of channels spaced apart transversely ofthe furnace above the rst pair of channels, means for fastening one end of each of said last named channels to said buckstays, means for fastening the other end of each of said last named channels to said chill structure, a refractory arch suspended from the iirst pair of channels, vertical structural members fastened to at least one pair of said channels and extending between said channels and above the top channels, a pair of vertical refractory walls each supported by said vertical structural members on the outside of said channels, and a refractory wall connecting the tops of said vertical refractory walls.

6. In an open hearth furnace having a plurality of buckstays at one end, a chill structure spaced inwardly from the end of said furnace, an uptake from the regenerative chamber between the end of the furnace and the chill structure, and a burner supporting structure dividing said uptake into two passageways; the improvement comprising a pair of channels spaced apart transversely of tne furnace, means for fastening one end of each of said channels to said buckstays, means for fastening the other end of each of said channels to said chill structure, a second pair of channels spaced apart transversely of the furnace above the first pair of channels, means for fastening one end of each of said last named channels to said buckstays, means for fastening the other end of each of said last named channels to said chill structure, a refractory arch suspended from the lirst pair of channels, vertical structural members fastened to at least one pair of said channels and extending between said channels and above the top channels, a pair of vertical refractory walls each supported by said vertical structural members on the outside of said channels, and a refractory wall connecting the tops of said vertical refractory walls, the opening defined by said channels and refractory walls being of sulucient size to enable a workman to pass therethrough, said opening being open to the outside of said furnace.

References Cited in the tile ofthis patent Germany Dec. 29, 1933