US1790597A - Hugo schkoder - Google Patents

Description

Jan. 27, 1931. H. SCHRGDER 1,790,597

COKE OVEN Filed Oct. 18, 1926 2 Sheets-Sheet 1' i] J y b8 Jan, 27, 1931. H. SCHRQDYER coxn OVEN Filed Oct. 18, 1926 2 Sheets-Sheet 2 Patented Jan. 27, 1931 HUGO sonnonnn, or Essen, GERMANY COKE OVEN 7 Application filed October 1s, 1926, serial No. 142,240, and in Germany August 5,1926. 1

My invention relates to improvements in coke ovens, and more particularly in horizontal coke ovens provided with vertical fines, in which the fiues'located near the ends of theoven are more intensely heated than the fiues located at the middle of the oven. One of the objects of the improvements is to provide an oven of this type in which the heating means are simple in construction, 1 and with this object in view my invention consists in constructing the heating means so that only the fiues located at or near the ends of the oven are intensely heated, while the fines located between said intensely heated fiues are uniformly and less intensely heated. Thus complicated means for regulating the temperature of the individual median fiues are dispensed with. I have foundthat by thus regulating the intensity of the heating means within the fiues the coke is uniformly heated throughout the length of the oven, the higher intensity of the heating means of the end fiues compensating the loss of heat by radiation.

For the purpose of explaining the invention several examples embodying the same have been shown in the accompanying drawing, in which the same letters of reference.

have been used in all the views to indicate corresponding parts. In said drawing,

Fig. 1 is a longitudinal sectional elevation showing the oven and one of the regenerators,

Fig. 2, is a section taken on-the line 22 of Fig. 1,

Fig. 3, is a detail sectional view showing a part of a regenerator of modified construction;

Figs. 4 and 5, are diagrammatical views 40 showing modifications of the fuel supply Fig. 6 is a fragmentary'sectional view, illustrating the passages for introducing gas into the outer and intermediate fiues; and

Figs. 7 and 8 are fragmentary sectional views showing modifications in the construction of the passages for supplying gas to the outer and inner fiues.

In the example shown in Figs. 1 and 2, the oven comprises coking chambers s, fiues h,

and regenerators a a located below the coking chambers. As shown the regenerators are divided by horizontal partitions 0 into upper and lower sections a and a connected withf each other at their inner ends. The fresh air is supplied to'the lower section a through an inlet (Z made at the bottom of the end wall b, and the preheated air is supplied to a pas sage f communicating with the fiues through passages n and with the regenerator through a'passageoropening 6 made in the top wall of the rege-nerator adjacent to theend wall the supply of air to the passage 7 being regulated by means ofa slide 9 adapted to be moved longitudinally of the passage f.

Asappears more particularly from the right hand part of Fig. 1, the first'and second fines"- h and /3 communicate'with a gas supplypa'ssage c', which is independentof the gas supply passage is connected with the median-fines it, and both supply passages may be'independently regulated for example by means of cocksg andg 1 I: In the operation of the oven the air is admitted through the inlet Z) to the lower section a of the regenerator, and after being partly preheated therein it rises into the upper section a After being preheated within the said section it rises through the passage e and into the passage 7. --But acomso paratively large proportion of the air fiows' directly through the air ducts or-passages m" and n'and into the first and second lines 7& and 72, because it is admitted thereto'without first undergoing a change of direction. The air flowing into the pasage f is deflected from vertical direction to horizontal direction and thereafter it is again deflected troin horizontal direction'to upward direction, so that the fiow of the air is retarded to some extent and a reduced amount of air is admitted" to the median fiues 72.. Further, a comparatively large amount of gas is suppliedto the first and second fiues 71. and k Thus comparatively intense fiames are producedwithin the fines h -and 7L which compensate the loss of heat by radiation through the end walls of the ovens. Thus loss of heat from the median fiues h is avoidechand it is not necessary to provide additional means for 1 amount of air.

An important feature of the new construction consists in that no special regulating means are needed, and that the increased supply of air to the outer fiuesis effected excluslvely by the construction of the oven. Another important feature consists 111' that the heating of the fines can be regulated in. r a simple way. By protecting the lnner fines hagainst loss of heat by radiatiomthey are uniformly heated, so that they produce a uniform draft causing a uniform admission of air. Thus the oven is to-a large extent automatically regulated, and the regulating slides located on the fines he set once for all,

and they are not needed any more for compensating the loss of heat by radiation.

Thereby the work of the attendant is made comparatively simple.

Further, the oven has a high efiiciency by reason of the increased economy of the cheqner work of the regenerator and the reduced loss of heat from the regenerator by radiation, the said loss by radiation being small, because the bottom part of the endwall is exposed only to the Waste gases which have already passed through thetop. and bottom parts of thechequer work, or to cold air. The construction of the regenerator in two sections is important because thereby'the temperature within the passages for the attendant is reduced.

In Fig. 3 I have shown a modification of the means for regulating the fiow. of air to the fines, the slide 9 being provided with means for regulating the admission of air to the passage f. As shown the saidslide is provided with an upwardly directed rib 0 co-operating with a rib 39 depending from the top wall of the passage Thus, when shif ing the slide 9 to the left for reducing the supply of air through the passage 6 and to the fines h and if, the passage is simultaneonsly obstructed, so that also the supplyof air to the fiues h is reduced.

In the example so far described independent passages or pipes are provided for supplying fnel to the outer fines If, k and to the inner fines h. In Figs. 4 and 7 l have illustrated a gas supply pipe t which is con.- mon to both sets of fines, and which is formed, between the second and third fine, with a double knee 7" by means of which the resistan'ce of the'pipe to the movement of the gas s increased, and a comparatlvely large amount of gas is supplied to the first and second fines h and k In the modification shown in Figs. 5 and 8 the same result is. obtained by reducing the pipe t ,which is common to both sets of fines, in cross-section as at t at the rear of the second fine.

I claim: I

'1. A coke oven, embodying a horizontal coking chamber, a series of vertically extending heating fines arranged along a side of the coking chamber, horizontalair-distributing conduits underneath the coking chamber and ducts leading from the conduits to the fiues,vertical air inlet passages adjacent the opposite ends of said coking chamber respectively, and communicating directly with said conduits at the ends thereof adjacent the ends of said coking chamber, means for supplying gaseous fuel to a plurality of the vertical fines adjacent each of. the two opposite ends of said coking chamber, independent means for supplying gaseous fuel to the intermediate fines to pro vide for the heating of the end fines to a greater extent than the intermediate fines in order to compensate for loss of heat by radiation from the end fines and thus produce uniform heating throughout the oven 1 structure, and valve means for controlling the fiow of air through each of sald inlet passages, said valve means comprismg slide valves, and means cooperating therewith for I simultaneously,varying the cross section of each of said distributing conduits adjacent the inlet passage that communicates therewith; I I v 2. A coke oven, embodying a horizontal coking chamber, a series of vertically extending heating fines arranged along a side of the coking chamber, horizontal air-distributing conduits underneath the coking chamber and ductsleading from the conduits to the fines, vertical air inlet passages adjacent the opposite ends of said coking chamber respectively, and communicating directly with said conduits at the ends thereofadjacent the ends of said coking chamber, means for supplying gaseous, fuel to-a plurality of the vertical fines adjacent each of the two op-.

posite ends of said coking chamber, independent means for supplying gaseous fuel to the intermediate fines to provide for the heating of the end fines to a greater extent than the intermediate fines in order to compensate for loss of heat by radiation from the end filnes and thus produce uniform heating throughout the oven structure, valve means for controlling the fiow of air througheach of said inlet passages, said valve means comprising slide valves arranged upon the-bottoms of said horizontal distributing conduits so as to be movable across said inlet passages, a rib in each of saiddistributing conduits at a point adjacent the inlet passage that communicates therewith, the rib extending transversely to the distributing conduit and projecting downwardly from the top thereof, and a rib on each of said valve means projecting upwardly therefrom and extending transversely to the distributing conduit and arranged to cooperate with the downwardly projecting rib in the same conduit therewith whereby to vary the cross section of the distributing conduit adjacent the inlet passage that communicates therewith simultaneously with the variation in the control of air flow through the inlet passage.

In testimony whereof I hereunto afiix my signature.

' HUGO SCHRODER.

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