US2008658A - Regenerative oven - Google Patents

Description

Juljr 16, 1935. c. o'rTo REGENERATIVE OVEN Filed April 24, 1935 INVENToR we am B @gm ATTORNEY Patented July 16, 1935 UNITED STATES PATENT OFFICE REGENERATIVE OVEN Carl Otto, Essen, Germany Application April 24, 1933, Serial No. 667,585

Germany January 23, 1932 7 Claims. (Cl. 20,2-14-3) The invention relates to chamber ovens opervidedon the upper end of the vertical chambers ating with regenerators, more particularly ovens which aperture can be closed by means of a plug. intended for the production oi coke and gas, in In ovens where vertical strong gas channels are which the regenerators serving for preheating arranged in the same regenerator partition, the

the media of combustion, viz. air or gas and air, vertical chambers according to the invention may 5 and those taking up the heat of the waste gases be in permanent or temporary communication are arranged in parallel to one another alternawith an adjacent one of these strong gas chantively in the same row: The invention has for nels through an inclined passage rising toward its object to avoid the transition of preheated air the channel 10 or preheated gas from the preheating regener- The effect of the vertical chambers of the in- 10 ators to the waste heat regenerators, which obvention may be increased still by providing a ject is obtained by va new and peculiar construcstone bond in which the vertical chambers are tion of the partitions existingl between the regenformed by two vertical rows of bricks which form erators which are fed in opposite direction. This between them a joint extending in parallel with object is achieved according to the invention by the longitudinal direction of the partitions. Con- ;I

vertical chambers being provided in the regensequently, upon leakage of this joint the mass erator partitions which 4chambers are closed at contained in the vertical chambers cannot penebottom and terminate somewhat below the upper trate yet 'nvthe regenerators and obstruct them. edge of the regenerators. They are lled with a In order to further exclude this possibility, the

refractory mass which has but little or no tenjoint running in the longitudinal direction of the 20 dency to agglomerate or form bead like masses. partition which is between the two rows of bricks In ovens of a design in which a gas not to be prethat form a chamber between them, may meet heated (strong gas) is supplied through pastransverse joints which likewise do not run up sages which vertically extend in the regenerator to the partitions of the regenerators.

partitions and directly open into the individual When joints occur in the partitions of the re- 25 heating lues of the oven chambers, the said vergenerators under the action of the pushing and tical chambers are disposed between the gas supshearing forces the regenerator brickwork is ex- .ply passages, seen in the longitudinal direction 0f posed to in service, these joints, immaterially the partition. whether horizontal or vertical, iill themselves 3o The refractory mass the vertical chambers are with the mass contained in the vertical chambers 3o filled with must Ilot COHglOmerate 1101 have the without this mass, provided it has the suitable natendency to purling, in a degree as'i'or instance ture, being capable to advance up to the regen- Ordinary, not disintegrated Sand. Furthermore, erator chambers. Theprovision of the vertical the mass either has to be in a burnt out state, chambers in the regenerator partitions therefore Such aS fOr instance burnt Clay (le Clay) 0r aiords a reliable protection from the transition 35 to`have -the consistency of certain dry mortar of preheated gas or preheated air to the waste mixtures. At any rate the maSS must not undelheat regenerators and allows in designing ovens go changes in structure when exposed to 'the temof the type under consideration to make these Delatules prevailing in the regenerat01`s The de" partitions comparatively thin, as a result of 40 sired avoidance of an agglcmerating tendency is which a larger number of regenerators may be 40 obtained best by an extremely ne grain which is provided or the height of the oven brickwork reachieved in a satisfactory degree by using burnt duced fire clay, dry n lOtal miXtulES 0T Sand and Te' In order that the invention may be clearly un- Sults m a' .conslderab1eincrease. the Sprfa'ce derstood and readily carried into effect, two emgngusnlsls ptllggviltdlgtic'lfh bodiments of the invention are illustrated by way bers already in the erection of the ovens and Of.examp1e m the afccompanymg drawmg as applied to regenerative chamber ovens. In the manentl remains therein. When a oint ocs that Cmmumcates with a vetical hamber, rst embodiment the vertical chambers provided the mass enters it from the Chamber and tightens in the partitions between the regeiierators and it, but in so doing the mass is consumed to some extending between the strong gas channels comextent. Therefore, it is desirable to provide the municate with an adjacent Strong gas channel, possibility of re-fllling the chambers with the Whilst in the other embodiment they communifine grained mass. To this end 'an aperture leadcate with adjacent parts of regenerator chaming to one of the adjacent regenerators is probers. 55

In the drawing Figures 1a to 1o are vertical sections of a regenerator partition in its longitudinal direction on line I-I of Figures 2a to 2c, Figure 1a and 1c showing the first embodiment and Figure 1b the other embodiment. Figures 2a and 2c relate to the first and Figure 2b to the other embodiment and are horizontal sections of the regenerators on lines A-A, B-B and C-C of Figures 1a to 1c,

Figure 3 relates to the other embodiment and is a vertical section normal to that represented in Figure 1b, on line III- III of Figure 2b.

Y Referring to this drawing, a denotes the regenerator chambers which are arranged in parallel ln a row in the longitudinal direction of an oven battery. b, Figure 3, are passages connecting the regenerators with the rows of heating nues c alternating with the coking chambers d. Each two regenerator chambers a serving to preheat the media of combustion (weak gas and air) alternate in the longitudinal direction of the batter: with two regenerators a which take up the hea d the waste gases. Upon reversal of the draft, the regenerators exchange their action. Therefore, in the two different stages of operation of the ovens a preheating regenerator space exists on the one side of the partition e and on the other side a waste heat regenerator chamber.

The partitions e include in a manner known in itself vertical gas supply channels f formed by bricks g of square section, see Figure 2a, and opening into the burners h which project into the heating flues. The bricks i1 and i2 adjacent to the bricks g form between them vertical chambers k which are filled with the refractory non-agglomerated mass described above. The vertical joint existing between the bricks i1 and 4iz and running in the longitudinal direction of the partitlons e at its ends meets transverse joints which owing to the peculiar design of the bricks ofthe bond do not immediately run up to the adjacent regenerator chambers a so that the mass entering from the vertical chambers 1c the joint obstructs the latter and prevents transition of gas and air, but cannot enter the regenerator itself. In the embodiment illustrated in Figures 1a, 1c and 2c the vertical chambers k by inclined passages m communicate with an adjacent strong gas channel. Hence, the mass can be re-iilled into the chambers AIi: even during the operation of the oven.

y In the other embodiment illustrated in Figures 1b, 2b and 3 a connecting passage n extends from the top of the chambers kto an adjacent regenerator chamber and is closed by a plug o during the operation of the oven. When the brickwork of the regenerators is re-bulit, the plugs o temporarily may be withdrawn and the chambers k re-fllled with the mass.'Y

I claim:

l. A regenerative oven of the class described comprising `a plurality of regenerators and masonry partition walls each separating two adjacent regenerators in which the gas pressures are normally different and each formed with vertical chambers closed at their lower ends, and a fine grained mass of granular refractory material in each of said chambers.

2. A regenerative oven of the class described comprising a plurality of elongated regenerators arranged side by side and elongated masonry partition walls each separating two adjacent regenerators in which the gas pressures are normally different and heating Walls one above and extending longitudinally of each of said partition walls and containing flues distributed longitudinally of said wall, each of said partition walls being formed with a plurality of vertically disposed gas supply channels distributed along the length of the wall, and communicating with the flues of the heating wall above it, and being formed with vertical chambers closed at their lower ends and alternating with said channels along the length of the partition wall, and a fine grained mass of granular refractory material in each of said chambers.

3. An oven as specied in claim 1 in which each of the said partition walls is formed with passages each connecting a chamber in said wall to an adjacent regenerator, and in which removable blocks normally close said passages.

4. An oven as specified in claim 2 in which the upper ends of the chambers in each partition Wall do not extend upward above the tops of the adjacent regenerators, and in which each partition wall is formed with passages each extending upwardly at an angle to the horizontal from the top of a chamber with which it communicates and connecting the latter to an adjacent gas supplyA y channel, whereby said chambers may be refilled with said granular material through said channels and passages.

5. An oven as specified in claim 1 in which the fine grained mass of granular refractory material consists of ne burnt flreclay particles.

6. A coke oven as specified in claim 1 in which each partition wall comprises two piles of bricks forming'the walls of each of the vertical chambers containing the granular material, and in which the joints between the bricks in one, and the bricks in the other of said two piles extend in a direction parallel to the sfdes of the wall facing the adjacentiregenerators.

7. An oven as specified in claim l in which each regenerator partition wall is formed of bricks comprising two piles of bricks forming the walls of each of the vertical chambers containing the granular material and in which the joints between the bricksin one, and the bricks in' (the other of said two piles extend in a direction parallel to the sides of the wall facing the adjacent regenerators, said wall also comprising bricks providing joints which are transverse to the first mentioned joints at the ends of the latter and terminate short of said faces.

`CARL O'I'I'O.

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