US1904516A - Regenerative coke oven - Google Patents

Description

April 18,v 1933.

. oTTo REGENERATIVE COKE OVEN ATTO April 18, 1933. C, y1-T0 REGENERATIVE Colm ovEN Filed Deo...

2 Sheets-Sheet 2 /NVENTo/ RNE Patented Apr. is, i933 cam. or'ro, or Esami-Bunn, GERMANY BEGENERATIVE' COKE OVEN Application led December 1,0, 1927, Serial No. 239,046, and in 'Germany December 17, 1988.

Of the regenerative coke ovens having horizontally elongated oven chambers and regenerators arranged in the longitudinal direction of the oven chambers, two types have turned out well in practice. One of them is the so-called half-divided oven, that is an oven in which the regenerators are divided into halves so as to provide two separate generators in the direction of the oven chambers, such regenerators alternating as to the direction of the draught, the heating taking place by wall halves. The other type is the twin flue oven, that'is an oven, in which the same direction of draught prevails in the regenerators all over the length of the heating wall, each regenerator being in communication with the odd-numbered or with the evennumbered llues of a heating wall.

The half-divided oven affords the advan-v 20 tage that the regenerators, throu h which the combustion agents llow in di erent directions abut on one another only at their narrow front ends, andthat itis possible without diiliculty to keep this separating wall as- 25 tight. This advanta e is of a particular importance in ovens wit regenerative pre-heating of the gas, as transitions of gas into the regenerators, that conduct waste heat, are avoided with certainty. On the other hand, the heating by wall halves is disadvanta eous in that a horizontal ilue must be rovid for, which extends overthe entire engtli of the heating wall. In this respect the twin flue oven is of course superior to the half-divided oven, because due to the heating by means of twin llues the horizontal iue isavoided. The twin flue ovens of the above-mentioned design suer however from the drawback that the re enerators, alternating as to the direction o the draught, are located beside one another and thus have large se arating surfaces extendin over the entire en h oi the heating Wall. t is to be understoo therefor without any further e lanation, that due to the presence ofthese ai' e separating surfaces leakages between t e juxta d regenerators may be avoided onl with much more diilculty than in the halfivided oven.

Now my invention has for its object to horizontally elongated oven chambers which 100 5 fully utilize the advantage afforded both by the half-divided oven and the twin ue oven and to avoid, on the other hand, their drawbacks. To this end, the invention substantially consistsin the fact, that the regenerators extending in the longitudinal direction of the oven chambers are divided, by a gas-tight partition, into separate regenerator chambers alternating as to thedirection of draught, and that each regenerator chamber is in communication, by means of a plurality w of vertical ducts with a distributing channel arranged between the heating ues and the regenerators which distributing channel connects its connected regenerator, either with alternatelues or with the intermediate flues of a heat-ing wall, a heating by twin flues being thus attained. Of course, the juxtaposed regenerators through which always flow the same agents in the same direction, and the distributing channels connected thereto may be 7 Fig. 1 shows a vertical longitudinal sec- 8 tion through the heating wall of a combined re enerative coke oven,

ig'. 2 is al vertical cross section the right hand half of the figure bein on the lines 2-2 and the left hand half o lines 3 3 of Figure 1,

Figs. 3 and 4 show sections of the second embodiment corresponding to those of Figures 1 and 2, of t e first embodiment, the right hand half of the rFi ure 4 be' lines 4-4, and the letlian half of the igure 4 on lines 5-5 of Fi 3.

Fig. 5 is a horizontal detail, in section, showing strong gas distributing channels below ad acent oven chambers connected to the 5 lues o the same heating walls.

The embodimentllustrated in Figures 1 and 2 will' be described first.

Referring to these figures, a denotes the the figure on 35 alternate in the usual manner with the heating walls the latter being subdivided so as to form twin iues b, b1. The regenerators extending below and in the longitudinal direction of the chambers are separated into two separate regenerators which alternate as tothe direction of draught, by a partition c, in which an insulating channel c1 is inserted which extends over the entire length of the oven battery. An airregenerator d or d1 respectively, always alternates with a weak gas regenerator e or e, respectively (e1 not shown), reckoned in the longitudinaldirection of the battery, theI latter serving also to pre-heat the air, .when strong gas, i.e. coke oven gas, is used. To supply the agents to be pre-heated and to lead 0E the waste heat the bottom channels f are provided, which may be connected in the usual way with the weak gas main g, and with the outer air or the chimney flue h, respectively. A distributing channel 'i extendin over the entire length of the heating wa is connected to each air regenerator d, by means of a plurality Aof ducts d2 which channel i is arranged between the heating ilues and the reenerators and communicates with alternate ues of a air of heating walls by means of ducts i2. distributing channel k arranged beside channel z' and similarly communicating with the weak gas regenerator e through ducts e? is likewise connected with the same alternate ilues of a pair of heating walls by means of ducts k2. In the same manner the intermediate llues of the said pair of heatin walls each communicates with a. distrl utin channel m and a distributing channel n t ru ducts fm.2 and n2, respectively. The channels m and n are communicably connected by ducts d and es to the regenerators d1 and e, respectively (e1 not shown). Distributing channels o and p arranged immediately below each chamber bottom and branched-olf from the strong gas main g, serve to supply strong gas to the ues through the ducts o2 and '122. The arrangement may be so chosen, that each two channels 0 or each two channels p are Qlocated side by side and may be so connected to the strong gas main g or cut o therefrom by means of valve q1, that, according to the direction of heating, only the channels o located below alternate oven chambers or only the channels p located below the intermediate chambers receive gas. In accordance with the twin ilue heating each channel o and p is connected either only to alternate tlues or only to the flues intermediate the alternate ilues of each heating wall. Instead of theY described strong as supply the underre arrangement may o? course be employed. The juxtaposed channels o or p may be combined so as to form one channel o and one channel p. l

The operation of the described oven will aso-ane be clear from the above description. Besides the above-mentioned advantage afforded by my invention,- the further advantage is obtained that, when the described strong gas supply is adopted, the'gas-conducting channels are alwa s se arated from the idle channels by the transitions are avoided with certainty even with strong gas heating. An oven w ich is extremely reliablein service is thus offered by my invention, the construction of which oven is nevertheless not in any way more complicated than that of the combined regenerativeovens hitherto known.

For the sake of clearness of the drawings, special regulating means for the uniform distribution of gas and air are not represented. These `means may .be provided in a known manner, viz. for the regulation of the strong gas, replaceable gas burners inthe form of nozzles may be used, and for the regulation of weak gas and air, damper bricks arranged on the bottom `end of the individual heating ilues areprovided. The degree of admission to the regenerators may likewise bey regulat ed by damper bricks interposed in the apertures connectin the bottom channel and regenerator cham er or in the a rtures connecting the regenerator cham er with the distributing channel. Moreover the known damper bricks may lbe arranged on the top end of the heating dues to regulate the heating gases flowing -through the individual heating lues.

The second embodiment illustrated in Fi ures 3 and 4 differs from that described su sta-ntially by a modifed'arran ement of the distributing channels dispose between the heating iues andthe regenerators. For, in order to, exclude with securit any transitions rom the weak gas channe s to the waste heat channels upon leakages occurring in the distributing channels, the arrangement may be so chosen, that the gas channels are located only between air channels. When, in correspondence with the distributing channels of t e first example, the air channels are denoted by i1 the weak gas channels by k1, and the waste heat channels by m1 and n1, the following order results, to full this condition: 1-k-c-m1-n-4n1-e1-k11 and so on. Y

As directly to be seen from Figure f1, each two channels 'i1 and m1, respectively, leading to the neighboring heating walls .-by means of vducts 3 and ma, res ectively, are connected by means of ducts di, d to a regenerator chamber that is set each to air or waste heat, whilst each regenerator chamber adjusted to -weak gas or waste heat, is only connected to a channel icl or nl, by means of ducts e, es which in lits turn communicates the ducts k3, n with alternate flues of a. pair of heatin walls. In order to obtain a supply, of the combustion agents, separately for each heatll c amber width, so that gas ing wall, the air regenerators d andd, respectively, may bev subdivided in longitudinal direction by atransverse partition, and the weak gas regenerators e and e1 not shown), may also be respectively, s o su divided. The channels k1 and n1, res tively, are correspondingly subdivided.` to the remaining elements of Figures 3 and 4, the arrangement and mode of o eration are the same as that of the first emgodiment shown in Figures 1 and 2.

What I claim and desire to securel by Letters Patent is 1. A coke oven battery comprisin a series of alternate horizontally elongate coking chambers and heating walls therefor arranged side by side in a row, each of said heating walls comprising a row of vertical combustion fiues, two parallel rows of cross-regenerators arranged below said chambers, each of said rows of regenerators being adapted to operate alternately for inflow and outflow, some regenerators of each row being adapted to preheat fuel gas and the other regenerators of each row being adapted to preheat air, when operating for inflow, horizontal distributing channels above and parallel with the regenerators, ducts communicably connecting each regenerator with one of said channels, and ducts communicably connecting one of said channels with some of the flues in one of the heating walls and another of said channels with the remainin ilues in the same heating wall, each channe communicablly]7 connected with a regenerator adapted to pre eat fuel gas being arran ed between a pa1r of channels, the latter being each communicably connected with a re enerator adapted to preheat air, the distributing chan-` nels communicably connected to one of the rows of regenerators being communicably connected to alternate flues in the heating walls and the distributing channels communicably connected to the other row of regenerators being communicably connected to the intermediate iiues in the heating Walls.

2. A coke oven batter oomprisi a series of alternate horizontal y' elongate coking chambers and heating walls therefor arranged side by side in a row, each of said heating walls comprising a row of vertical flues', two arallel rows of cross-regenerators below sai chambers, each row of regenerators being adapted to operate alternately for inflow and out cw, some regenerators of each row being adapted to preheat fuel gas and the other regenerators of each row being adapted to preheat air, when operating for inflow, horizontal distributing channels located above and parallel with the regenerators, ducts communicably connecting each regenerator with one of said channels, and ducts communicably connecting each o'f said channels with fines of o. heatin wall, and means for supplying an alternative fuel gas,

comprising a pair of horizontal slpply conduits below and parallel to each of e coking chambers and located between the soles of the coking chambers and the distributing channels, and ducts communicably connecting said conduits with the fines, the distributing channels-communicably connected to one of the rows of regenerators being communicably connected to alternate fines in the heating Walls and the distributing channels communicably connected to the other row of regenerators being communicably connected to the intermediate iiues in the heating walls.

3. A coke o ven battery comprising a series of alternate horizontally elongated oven chambers and heating walls therefore arranged side by side in a row, each of said heating walls comprising a row of vertical fines, regenerators extending below and in the direction of the chambers and communicably connected with the lues, a gas distributing conduit located below the bottom Vof each of the oven chambers, above and parallel with the regenerators, ducts communicabl connecting one of the gas distributing con nits below one of the oven chambers with alternate iiues in one of the heating walls and ducts communicably connecting one of the as distributing conduits below one of the adjacent oven chambers with the intermediate iues of the same heating wall.

4. A coke oven batte comprisin a series of alternate horizontally elonga coking chambers and heating walls therefor arranged side by side in a row, each of said heatin Walls comprising vertical iiues, two

aralle rows of cross-regenerators arranged low said chambers, horizontal distributing channels above and parallel to the regenerators and below the cokin chambers, each of the regenerators communicating at the top thereof with one of said channels by ducts spaced from each other at the top of the regenerator, a conduit below and communicating with each of the regenerators at the bottom thereof, ducts communicably connecting the channels with said flues, each row of regenerators being adapted to operate alternately for inflow and outflow, said regenerators being jointly operable for preheating air or separately and simultaneously operable for reheating air and an extraneously derived) fuel gas, and means for supplying an alternative fuel gas to the fines, comprising a pair of fuel as conduits below and parallel to each of t e Cokin chambers, ducts individual to the fines an communicating said fuel gas conduits therewith, said conduits being located between the soles of the colnng chambers and said distributing channels.

5. In a coke oven battery, a series of alternate horizontallv elongated coking chambers and heating wa s therefor arranged side by side in a row, each of said heating walls comprising vertical combustion fines, cross-reasV ver.

generators located below said chambers and communicably connected with said ues, said regenerators, being jointly oferable for preair, or se arately an lsimultaneously operab e for re eating air and an extraneously deriv "fuel gas and means for supplying a'n alternative fuel gas to the iues comprising a pair of conduits below and parallel to each of the coking chambers, ducts,

individual to the lues, communicating saidI conduits therewith, said conduits be' located between the soles of the ooking c mbers and the connections between the regenerators and the ues.

In testimony whereof, I have signed my name to this specification.

' CARL OTTO.

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