US1858229A - Regenerative coke oven - Google Patents

Description

May 10, 1932. c, QTTQ REGENERATIVE COKE OVEN 4 Sheets-Sheet 1 Filed March 10 1925 INVENTOR Filed March 10 1925 '4 Sheets-Sheet 2 INVENTOR ATTORNEY May 10, 1932. c. OTTO REGENERATIVE COKE OVEN Filed Mairch 10, 1925 4 Sheets-Sheet a "2'4 75 I j I [10. v

W MENTOR ATTORN May 10, 1932. c; OTTO REGENERATIVE COKE OVEN Filed March 10 1925 4 Sheets$heet 4 I Patented May 10, 1932 Y I' UNITED. STATES PATENT, OFFICE CARL am, on HELLERUP, DENMARK Y nnonnmwnvn looxn OVEN Application flied March 10, 1925. Serial No. 14,472;

This invention relates to a regenerative ed regenerators of which the middle one coke oven having a row of horizontally elonserves for heating gas and the two arran 'ed gated oven chambers which may be heated at the sides of the middle regenerating, serve as desired by,, strong gas or weak gas and to preheat the air. This construction has the in which'each chamber is preferably providadvantage that regenerators for gas and 55 ed with heating walls having vertical heatwaste-heat do not lie side by side and it is, ing flues and with regenerators running betherefore, impossible for gas to leak or flow low the oven sole, in the direction of the oven into the waste-heat regenerator's. This ohambersf The heating flues are constructed avoids dangerous conditions in the oven.

in the form of so-called twin flues or hair- Gas and air underanoven chamber pass up- 60 pin flues, in one form of which the heating wardly into the two heating walls and the gases burn in alternate flues upwardlyand waste-gases or products of combustion depass downwardly into the associated interscend downwardly under the two neighbor-. mediate flues, during one oven operation, and ing chambers.

the reverse direct-ion of burningtakes place With this construction, moreover, a sepa- 65 when the oven is reversed. As the oven is rate, independent air regenerator is connectto beheated as desired with'either strong ed with one half of the heating flues of a gas or weak gas, there are provided in adheating wall whereas the lgas regenerator is dition to the feeding pipes for supplying s connected with the half of theheating flues strong gas, regeneratorchambers for preof both neighboring walls. 70 heating and supplying weak gas as well as As illustrated in the drawings, the regenfor preheating the air for combustion. In erators may be divided in the middle of the special cases when it is not desired to heat oven by a division wall, thus forming a with a strong gas, the feeding pipes for sup- 'double oven. Each longitudinal half of the plying the stronggas may be omitted. oven is thus separated from the other half 75 One of the objects of the invention is to and th h ating, oking and ga making op simplify the construction of such coke ovens eration an tak la in h h lf oven and o S0 Construct and arrange the g independently of the other. Another subdiand waste-heat passageways and the regenvision of the regenerators can be made so erators forpreheating gas and air and for that, for example, for each burner a special 80 receiving the' waste-heat in connectlon wlth regenerator may be provided.-

twin or hairpin burner flues, so that each With th above d th bje "i i k i group of "generators Supp pr t -'my invention consists in the parts, improveand preheated gas for combustiondirectly ments d bi ti more f l f i thru short transverse vertlcal passageways t h i ft 85 to a plurality of ha1rp1n flues arranged in -Referring w to the drawings:\ ne1ghbr1ng.heat1ng W h n f Figure 1 illustrates a vertical'longitudiator supplying onlyv its associated heatlng section of oven;

40 .Wa11 the gasyegeneratorssupplymg the e Figure 2 is a vertical cross-section online 1n both heating walls from WhlCh walls the of Figure 1 Y I products of combustion pass as waste-heat b into two adjacent gIOlFS of fregenerators, on; group on each side 0 the eedlng grdup o regenerators. The outside regenerators of a the 2 2; g k d t r group are connected to the flues of ne ghborf i a 7 an ag 59 636 932 g5 ing heating walls and the intermediate retlonal Vlews on hnes 3 n f generator is connectedto the flues of both of Figure i 5' 4 of said walls. v Figure 8 1s a cross-sectional vlew taken In accordance with the invention, I pro- 1 on the same plane of section as is Figure 2.

vide under each oven chamber, three separat- Figure 9 is a cross-sectional view illustrat- Figure 3 is a horizontal cross-section on line 3-3 of Fig. 1, the said section passing ing a regulator brick, showing my form of.

flue regulator.

Figure 10 is a cross-sectional detail view taken at right-angles to Figure 9. Figure 11 is a horizontal cross-section illilistrating another form of the invention, an I Figure 12 is a cross-section on line 12-12 of Fig. 11.

Referring to the drawings, the oven is illustrated as an underburner coke and gas oven carried on supports 2, forming accessible arches or passages under which the at tendant may move to regulate the valves for the rich gas supply. The body of the oven comprises a plurality of horizontally elongated oven chambers 3, 3a, provided with heating walls 4, 4a, in which twin heating flues, 5, 6, 5a, 6a, 5b, 6b, are arranged, the

gas burning upwardly in the branch flues 5, 5a, 5b, and descending in flues 6, 6a, 6b,

in one wall, and when the oven is reversed, the .gases willburn upwardly in flues 6, 6a, 6b,, and descend in flues 5, 5a, 5b. The flues are provided at their tops with peep holes. Regulators are provided for regulating the flow thru the flues, which regulators may be constructed as usual, in the form shown in Figure 1, in which slides 7 are provided whose position can be adjuste by a rod op- 'erated manually and passing'thru holes 8,

bered 10, 11, 12, 13, in Figure .8. Each group of regenerators includes a weak gas regenerator between two air regenerators. Triad groupll, includes gas regenerator 14, built between two air regenerators-15, 16. Triad' group 12, includes gas regenerator 17, built.

between two air regenerators 18, 19. Triad group10, includes gas regenerator 21, and I I two air regenerators 20, 22. Triad group 13,

includes gas regenerator 23, and air regenerators 24, 25. And, similarly for'the other regenerator groups. Each gas regenerator is sup lied with weak gas thru its'conduit 140, I 0, 230, etc., extending to the oven faces, and lying beneath and parallel to the regenerator and communicating therewith by means of ports 14011. The air regenera tors are similarly supplied with air thru -their conduits 150, 160, etc. and ports 150a. The gas enerator 14, is directly connected by means 0 two passageways 26, 2 with the flues of two neighboring heating walls. In

the form illustrated in Figs. 1-8, passage- 'way 26 connects gas regenerator 14, to the branches 5, 5a, 5b, of the-twin flues of one heating wall and passageway 27 connects the gas regenerator 14, to branches 6 6a, 6b, of the neighboring heating wall. series of such passageways 26, 27, directly connects regenerator 14, with a series of twin flues in each heating wall (see Figure 3).

Air regenerator 15, is directly connected by passageway 28, with a twin flue 5, of one heating wall, and air regenerator 16, is directly connected by passageway'29, to a twin flue 6, of the neighboring heating wall. In a similar way, air regenerator 15, is directly connected by passageways 28 to the twin flues of the one heating wall, and air regenerator 16, is directly connected by passageways 29 to the twin flues of the neighboring wall. By these means the resistance of the passage of the gases thru the flues is kept low and the height of the oven is reduced.

The regenerators 17 18, 19 of group 12, and the regenerators 20, 21, 22' of group 10, are similarly connected to twiniflues, group 10 and group 12, being the groups on opposite sides of and. adjacent to the feeding in group 11. Consequently, preheated gas and air is supplied by the feeding in group, burnt in neighboring flues and discharged into two groups of regenerators adjacent to and on opposite sides of the feeding in group.

The roof 200 of the regenerators lying be-' tween the bottoms of the heating flues and the tops of the regenerators are thus provided with transverse passageways passing transversely through the roof directly connecting the regenerators with the associated twin flues. This insures .a short passage for the travel of the gas and air and of the burning gases in the flues, thus reducing thepressure required to feed the flues and with a consequent reduction in leakage between the flue chamber and the oven chamber.

groups become the discharge groups for the products" of combustion and the adjacent groups become feeding in groups for their respective flue systems.

When it is desired to operate the oven by means of a strong gas, horizontal gas supply pipes 30, 31, are provided which extend in the vaulted passageways underneath the oven, the pipes lying beneath the heating walls. The pipes are arranged in pairs and vertical gas pipes '32, 33, are connected in two On reversal of the oven, the feeding in 1 sets to the respective horizontal pipes 30, 31. I

These vertical gas pipes pass upwardly thru the partition walls 34 between the regenerators such as the oven supporting walls, which protects the gas within the pipes from excessivevheat which would otherwise lead to decomposition of the gases. One set of vertical gas pipes enters one branch of the twin flues and another set of pipes enters the other branch, thus supplying strong gas for both direct and reverse operations of the oven..

the downwardly discharging flue branches adjacent flues. In other words, the upwardly burning flue branches are-adjacent and r are likewisefadjacent.

I also arrange the air flues Whichsupplies. pre-heated air to one branch of the twin flue, back of and below the gas flue, which supplies preheated gas to the same branch of the twin flue. In this way a greater longitudinal separation is provided between the gas-flue and the waste-heat flue, thus reducing the danger of leakage between the gas flue and the wasteheat flue.

Referring now to Figure 11, it will be observed that the regenerator system is divided into groups of three regenerators as before, one for 'gas which lies between two air regenerators. The gas regenerators 39, 40, 41,

duits 56, 57, from one flue-and the descending Figure 12 42, have arranged adjacent to them on each side thereof, air regenerators 43,44, 45, 46, 47, etc. The adjacent branches 48, 49, of adjacent twin flues 47a, 48, 49, 50, etc. are suppliedv with gas from the same gas regenerator 39, thru conduits 51, 52. Air for combustion is supplied to the same flues thru air regenerator 43, thru conduits 54, 55. The air conduits are under the gas conduits as shown in The burning gases thus ascend in adjacent branchesof neighboring flues and descend in the remote branches of these flues. The descending burning gases also run in the same direction in adjacent branches of adjacent twin flues. In Figure-11, the descending burning gases pass into air regenerator 44 and gas regenerator 40, thru congases in the adjacent branch of the neighboring-twinflue pass in the same direction, into the same air regenerator 44, and gas regenerator 40, thru conduits 58, 59. The arrows at the top of the figure show the direction of travel of the burning gases during the oven operation. I c v At each front face of the oven more air and gas is supplied than thru the interior flues in order to supply more heat to the ront sections which are subjected to the cooli g influ- .ence of radiation toward the outside of the oven. An additional air flue 60 and gas flue 61, is suppliedfor the outside branch of the twin flue, as well as for the inside branch (see flues 62, 63)the former operate to'sup ply gas and airduring one operation of the oven and the latter supply gas and air during the oven reversal.

The regenerators of the coke oven are divided in the middle by adivision wall 300 each longitudinal half of the oven thus operating independently of the other half.

In Figures 9 and 10, I have shown my improved form of brick regulator for controlling the flue opening and to regulate the flow of burning gas thru the flue. A brick 65 is placed in a socket in the top of the flue separation wall and extends to the top of the oven. An opening 67, is provided in'the roofof the oven, thru which the brick may be introduced. Filling bricks 68, are placed in the opening on top of the valvebrick 65. The brick as shown in Figure 10, is narrower .than the flue passageway and thus leaves openings 69, 70, at each side thru which the flame passes. The brick may also be perforated. By introducing bricks of various sizes, the flow may be controlled.

Having thus described the invention and its operation, it will be understood that j changes may be made in'carryingthe invention into eflect, without departing from the principle thereof. WhatI claim is": s A coke oven provided with a roof, a series of alternate coking chambers and heating walls therefor, said walls being each provided with vertical combustion flues, communicably connected at their tops, separating walls between two adjacent combustion flues, a removable brick mounted on the top of each separating wall and extending substantiallyto the roof of the oven, said brick being adapted to permit the passage of gas at leaston one side thereof and being adapted to regulate the rate of passage of burning gas from one flue to the adjacent flue.

In witness whereof I have signed m name to this specification.

CARL o'rro.

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