US2219307A - Charging device for charging liquid coking material into coke ovens - Google Patents

Description

Oct. 29, 1940.

CHARGING DEVICE H. GRUBER 2,219,307

FOR CHARG-ING LIQUID COKING MATERIAL INTO COKE OV-ENS 19, 1938 5 sheds-sheet 1 Filed Dec.

Oct. 29, 1940. H. GRUBER 2,219,307

CHARGING DEVICE FOR CHARGING LIQUID 4QOKING MATERIAL INTO COKE OVENS Filed DSC. 19, 1938 5 Sheets-Sheet 2 Oct. 29, T940. H. GRUBER CHARGING DEVICE FOR CHARGING LIQUID COKING MATERIAL INTO COKE OVENS 1 Filed Dec. 19, 1938 5 Sheets-Sheet 3 H. GRUBER a Oct. 2.9, 1940.

CHARGING DEVICE FOR CHARGING LIQUID COKING MATERIAL INTO COKE OVENS Filed Dec. 19,. 19258 5 Sheets-Shet 4 H. GRUBER Oct. 29, 1940.

CHARGING DEVICE FOR CHARGING LIQUID COKING MATERIAL INTO COKE OVENS v Filed Dec. 19. 1958 5 Sheets-Sheet 5 Patented Oct. 29, 1940 l i i l l 'i UNITED STATES PATENT OFFICE y CHARGING DEVICE FOR CHARGNG LIQUID COKING MATERIAL INTO COKE OVENS Herbert Gruber, Essen, Germany, assignor, by

mesne assignments, to Koppers Company, Pittsburgh, Pa., a corporation ofpelaware Application December 19, 1938, Serial No. 246,591

In Germany December 22, 1937 v 9 claims. (o1. A20a- 149) The present invention relates to contrivances several pipes extending approximately down to for charging liquid coking materials, such as the oven sole, said pipe having a longitudinal slot pitch or the like, into chamber or retort ovens extending from the lower end of said feeding for the production of gas and coke and more pipe up to the desired level of the charge. The

.particularly into ovens with high narrow cham,- pipe is preferably introduced into the oven cham- 5 bers or retorts. v ber at one end of the coking chamber and the Hitherto the liquid material to be coked was longitudinal slot directs the liquid on entering charged gradually into the coke oven through towards the other end of the chamber. The nozzle-like pipes, arranged in the oven roof, liquid to be treated ilowsrslowly through said so that within aperiod of say 21/2 to 3 hours the pipe or pipes into the chamber onto the top of 10 g oven chamber was slowly filled and atany given the. material already charged in, and no liquid period only a small quantity of the liquid came material can be' thrown against the walls of the Ainto contact with the wall faces. l oven chamber, and the charging takesl place Itwas found that by such a charging of the lgradually in accordance with the time of filling. u, oven chambers with liquid material, destructions The provision for inserting the charging pipe,

` will be met with on the wall faceswithin a cerdesigned according to the invention, only at one tain period. I` have found from experience that end of the oven, chamber still oers other essenthese difficulties result from the fact that part tial advantages, which are likewise theobject of of the jets of the liquid material, entering the 'my present invention, which in the main consists chamber from above, is deflected in such a manof providing every oven chamber with a single 20 ner that the liquid on entering always touches charging point which may easily be connected the samezones of the wall faces. The liquid, with known circulating pipes', arranged along the for instance coal tar pitch, is suitably preheated oven battery above the charging holes of the into a temperature of about 310 C. before being dividual chambers, and through-which the liquid filled into the coking chamber. This temperais kept in continuous circulation. These circu- 2t ture is above the so-called rst conversion point lating pipes arranged on the oven roof are, ac-

of the silica material used for the construction cording to the invention, provided with an outlet of the coking chambers. A cooling down of the for each charging hole of the battery, each outfront faces of the bricks down to about 310 C. let controlled bya cock which is 'designed in is, therefore, not dangerous so that a gradual such a manner that, in every position of the cock 30 charging ci' the coking material in the manner plug, which is preferably connected with the outsuggested above will not affect' the brick matelet pipe it is provided for, and which plug isfacrial. tuated by means of this outlet pipe to open and If, however, the liquid material `on entering closed position, the hot liquid. may circulate is touching repeatedly the same zones of the wall through the pipe system. 35

faces having a temperature of about 3005' C. or According toy the invention, the outlet pipes less, than a stronger and also a more intensive are connected with the neck of the plugs and cooling down to 300? C., i. e. below the iirst conare also bent-off angularly in such a manner that version point of silica, is rendered possible. they project, while in `charging position, into the 40 Such a cooling down and subsequent `reheating mouth vof the corresponding oven charging pipe, 40 has a dangerous effect upon the silica material which on its top is provided with a funnel. On since the temperature of the silica material turning these outlet pipes so that the pipe end varies repeatedly justabout the first conversion is within the range of the funnel of the oven point ofthe silica and consequently the silica charging pipe, the cock plug is turned simultabrick will deteriorate on account of the change neously in such a'manner thatthe liquid may 45 in volume which takes place on passing the said fiow from the circulating pipe into the oven conversion point. chamber. Such a ow of liquid is interrupted.

Now, the main object of my present invention by closing the plug again on turning back the is to provide a contrivance for charging liquid said outlet pipes.

coking materials into coke oven chambers which In accordance with the invention, the charg- 50 eliminates such disadvantageous cooling down ing of the cokingchambers may also be eiected of the walls of the coking chamber or retort. by means of a charging device travelling over According to the invention, this improvement the oven roof.` This charging device is provided -is obtained by feeding the liquid material to be either with lifting means for withdrawing the treated into the oven chamber through one or chargingy pipe introduced into theoven, or such 55 a lifting contrivance may further be arranged for separate travel beside the charging device on the oven roof.

With. the above and other objects and featuresof' my present invention in view, I Will now describe a preferred embodiment of my invention on the lines of the accompanying drawings, in which:

Fig. 1 is a longitudinal section through an oven chamber -built according to the present invention;

Fig. 2 is a side view of a part of an oven battery in accordance with the invention;

Fig. 3 is a longitudinal section through a shutoi cock used in connection with the apparatus according to Fig. 2;.

Fig. 4 shows another mode of carrying out the invention with a stationary circulating pipe arranged on the oven battery;

Fig. 5 is a longitudinal section through a shutoff cock adopted for the contrivance of Fig. 4;

Fig. 6 illustrates a longitudinal section of the shut-off cock according to Fig. 5;

Fig. 7 shows the connection of the charging cock with the oven charging pipe of the conn trivance according to Fig. 4;

.Fig. 8 shows a charging device for travelling over the oven roof combined together with a manipulating device for lifting the charging pipe;

Figs'. 9 and 10 finally illustrate a longitudinal section through the end of an oven chamber, and a front view of the oven battery, showing a separate travelling charging device, and lifting device each for the oven charging pipe.

'I'he coke oven illustrated in Fig. 1 comprises the narrow horizontal coking oven chamber AI which is closed gas-tightly by door closure means 2 and its two oppositely disposed longitudinal walls which are heatedv by the heating nues arranged in the manner well known for the ordinary coal coking ovens. For simplicitys sake the heating lues are not shown on the drawings. The oven roof 3 is provided with an opening 4 which is closed by a lid 5 during the coking process. The opening 4 serves for the introduction of the charging pipe 6 into the oven chamber. The charging pipe 6 reaches almost down to the oven sole 1 and its lowermost position is secured by a collar 8 surrounding the pipe, said collar 8 fitting tightly against the mouth of the opening 4 in the oven roof. The charging pipe 5 has a longitudinal slot 9 arranged to extend throughout the heightof the charge. Said slot is directed towards the other end of the oven chamber. The charging pipe 5 with its upper end I3 projects from the oven roof and is tted with a traverse II by means of which it may be drawn out of the oven chamber. the charging pipe is constructed like a funnel.

A circulating charging pipe I3 tted with shutoff cocks I4 is arranged firmly on the brackets I2on the oven roof. These shut-a cocks` I4 are situated beside the charging holes 4 in the oven roof of the coking'chambers of the battery. The oven charging pipe 5 is inserted into the oven chamber by a lifting device IGa travelling over a rail I 5a arranged at a suitable height above the oven roof and is extracted from the oven chamber likewise by the device I6.

The design of the shut-oil cocks I4 is shown more fully in Fig. 3. As may be seen therefrom, the cock comprises a casing I4 in which is rotatably arranged an inner conical casing I5. The inner casing I5 is engaged by a usual hollow conical plug I5, the latter being provided The upper end III of with an'axially hollow projection 22.

The inner casing I6 may be secured to the casing I4 by means of the ilanges I1.

Between the inner casing I6 and the cock casing I4 is left a free space 25 which serves as a by-pass for the liquid circulating through the pipe. 'I'he casing I6 is likewise provided with an opening I8 lying inthe range of the pipe23. The opening I8 coincides withv the opening I9 ar.-l ranged in the plug I5.A The plug I5 is heldin the casing usually by means of a flange 20 and tightened by a stuiling box 2|. The plug I5 and its neck 22 are hollow so that the liquid material may flow through the opening of the neck 22 when the cock isin opened position as shown on the drawings. A part of the liquid material entering through the pipe 23 may ow always through the by-pass 25 into the pipe 26. `The hot material is, therefore, in continuous circulation through the pipes 23, 25 and it is prevented from refrigerating and solidiiying in the circulation system.

An angularly bent pipe 21 isgnrmly screwed to the neck 22 of the plug cock I5 so that on turning said pipe 21, the plug cock |5 is reversed. The arrangement is such that in case the pipe 21 is in lifted position as may be seen from Fig. 2 the opening I9 of the plug cock I5 is out of the range of the opening I8 of the inner casing I6 and consequently the flow of the liquid through the hollow plug and the pipe 21 is interrupted. While in charging position of the pipe 21 as shown in Fig. 2, in connection with the middle cock marked I4a, the openings I8 and I8 of the plug cock and of the inner casing coincide so that the liquid material may freely discharge from the 'circulating pipe into the charging branch.l The charging branch 21 is secured in the charging position as well as in the closing position by means of a spring 23 fastened to the bracket I2.

The liquid is delivered through the pipe I3 and passes around the casing of all the shut-oil cocks I4 partly or completely corresponding to their po-l sition, through the above mentioned by-passes 25 of the cock casings. Finally it ilows through the pipe 28 back again into the tank where it is heated to the desired temperature.

In Fig. 4, the circulation pipes are marked 32 vand33, the former serving as forerun, the latter as backrun. The pipes 32, 33 are arranged laterally above the charging openings 30, 3l which are provided in the oven roof l near one end of the coking chamber. Cocks 34, 35 are' arranged in the pipes 32 and 33 at those points lying be-I tween two adjacent charging openings. EachA of the plugs of both the cocks 34 and 35 are connected with a branch 36, 39 similar to the cock shown in Fig. 3. A special charging cock 38 is connected with the other end of the pipe branches 36, 31 in pairs. Said cock 38-is arranged in such a manner that it may be moved just above the upper end of two adjacent charging pipes Ill, the latter being introduced into the chamber to be charged and brought in charging position.

The design of the charging cock 33 as well as of the straight- way cock 34, 35 is fully shown in Figs. 5-7. The charging cock 33 is designed similar to the cock illustrated in Fig. 3 and comprises a casing 4I in which is arranged rotat- I ably the conical cock plug 43 having a downward extension in the form of a branch 42. The casing 4I is tted with lateral connecting parts 44, 45 to which are connected the angularly bent pipes 38, 31 in a rotatable manner by means o! stufllng boxes 4l The two parts 44, 45 of the casing 4| are interconnected through a by-pass 48 leading around the cock plug. A continuous ilow of liquid may take place through this by- The charging cock may be reversed*k in suchy a manner that the extension 42 fitted with a threaded head 5 I.

thread 50 after the charging cock is moved within the range of the funnel-like head 5| of the oven charging pipe I0, is connected with the Preferably the charging funnel 5| is turned in a stuiilng-box-like guide 53 attached to the charging pipes I0 by means of the lever 52 provided on the charging funnel 5|un\ til the threaded part of the pipe i0 engages the thread arranged at the lower end of the cock extension 42. On afurther turning ofr said funnel,

the opening 49 of the cock plug is brought into the range of the' connection 45 provided in the casing 4| so that the liquid material may pass to the charging pipe I0. Reversely, the charging cock is closed by rotating the cock plug and disvengaging the thread of its extension. In each Figa 5 and 6 can likewise be designed in such a manner that the liquid material may always iiow through the casing of these cocks. The plug 54 of the throttle cocks, theneck 55 of which is connected the respective pipe 38, 81, consists of two projections 51 facing each other and fitting to the round inner wall of the casing for the plug. On the mouth of the branches 58 in themiddle space of the casing is arranged a partition closing said mouth at one side. It is thus possible to bring the projections 51 as shown on the drawings in the dot and dash lines 51a, by turning the cock plug 54 into the fully opened position, into such a place that the liquid may freely circulate through the cock casing. The circulation of the liquid through the forerun and backrun byepasses 32, 33 may be reduced in that the plug 54 is turned into the position shown in full lines on the drawings. According t0 Fig. 6 the branch 58 on the right side is closed by one of the projections 51 while the other branch 58 is open towards the casing.

In case the right hand branch 58 (Fig. 6) is fully or partly closed by the one of the projections 51, the left hand branch 58' is opened and the liquid may flow through said branch into the cock casing, thence through the opening provided for in the cock neck 55.`

The charging contrivance illustrated in Fig. 8 mainly comprises a car -88 which travels above the charging openings by means of the travelling wheels 8| over a machine track 63 arranged on v the oven battery v82. The car 80 is iitted on the top with a frame 64 in which is arranged a lifting device 85 serving to, extract the ovencharging pipe I0 from and lower it into'the coking chambers of the battery. An essentially rectangular supporting frame 88 is arranged on the cary resting upon the beams 81 when the pipe I0 is lowered into its charging position and thus supports the charging pipe- I0, suspending it inthe oven chamber.

At both sides ofthe travelling, rail's are the circulation pipes 1| supported in pipe hooks 12. To the circulation pipes 1| on each travel@ ling railV there are arranged angularly bent pipes 13 revolving in stuiiing-box-like members 14.'

Thelower ends of pipes 13 are likewise angularly bent and also rotatably connected with pipes 15 by means of a stuiilng-box-like casing 14. The pipe 15 with its upper end angularly bent is rotatably supported in the stufdng box casings 18 which are .movably fastened to levers 11. The levers 11 are fixed to a shaft 18a arranged on the frame 36. The pipes 18 are firmly connected with the stuffing box casing's 18 which lead to a charging cock 19.. This cock 19istted below with an outlet pipe 88 which is screwed into the funnel/like head of the charging pipe I0 in a similarvjnanner to that already described in connectiorilwith the arrangement shown in Fig. 7. 'The chargirig'cock 19 is similar to the charging cock shown in'Fig. '1 and provided with a by-pass for a continuous circulation of the liquid.

The pipe system 13, 15, 18 is therefore guided on both sides of the machine track so that when travelling the 'car 60 over theV track 83 the whole pipe system follows the movement of the car. The pipes 13,v 15 are,l therefore, of such a length that the charging openings 5.of the whole battery oof "a part thereof may be connected to the charging pipe I0. p If the charging contrivance has reached the correct charging position above the oven chamber, first of all the car is blocked by means of an interlocking device 83 arranged on. the supporting frame 66, said interlocking device engag-A ing in suitable locking cams 84 provided therefor on the machine track 63. The charging pipe i0 is then introduced into the oven chamber by lowering the lifting device and secured to the frame 66 in the described manner. 'The hand lever 8| arranged on the shaft 85 which is sup,- ported in the car and which 'has a lever 82 parallel to the levers 11; which lever 82 is movablyy connected with the charging cock 19, is then operated tol connect the'charging cock 19 to the charging pipe I0, through the parallel rods and -levers'11, 8,2 and the outlet branches 80 of the manner, and then enters the return pipe line 1| arranged on the right hand side of the trackway.

Since the charging process takes about 21/2 to 3 hours it may be advantageous to provide separate cars for the charging device forand for the device manipulating the charging pipes, instead of having saidtwo contrivances arranged on a common car. This is ofspecial advantage if a single charging device has to fill so many oven chambers successively thatthe period between the completion of the charging procedure of one chamber andthe beginning of the charging procedure of the next following chamber is very short ,so that little ytime will be left for removing the charging pipe froml oney chamber and for suspending it into the next one. In this case at least two charging pipes l will be used.

As shown in Figs. 9 and 10 ,the charging device 86 is movably suspended from a travel-- ling rail 81 which is fastened to a supporting construction provided on the buckstays 88 of the oven battery. The charging device 86, travel-- ling laterally of the charging openings arranged yon the oven roof 3, is guided below in a track 90 and thus prevented from side movements. The delivery and return pipes 9| are fastened to the supporting constructions 89 to which are connected, similar to the contrivance shown in Fig. 8, the movably guided pipes 93 leading to the charging cock-92. A special lifting device 94 is arranged for travel on a track provided on the oven roof and facing the charging device 86. The lifting device 94 is supported at the top by means of a roller 91 travelling on the rail 96 arranged on the brackets of the supporting construction 89. For removing the charging pipe I0 out of the oven chamber by means of hand gearing 98, a double lever 99 fitted with recesses is turned around in such a manner that the recesses engage in suitable projections of the charging pipe l0 so that after a previous removal of the charging cock 92 out of the range of the charging pipe to be extracted, the charging pipe can be taken out of the oven.

The charging device described above can also be advantageously used in those cases where as usual hitherto, several charging pipes are provided for each coking chamber. In this event the horizontal part of the pipe Illb of the contrivance is elongated to such an extent that it reaches beyond all the charging openings arranged in the roof of the individual coking chambers. With this pipe lllb serving as a distributor several charging pipes I0 are connected which by suitable lifting devices are introduced into the chamber and extracted therefrom. The charging pipes may in this case also be carried out inthe described way.

The whole charging device together with the lifting device is suitably placed upon a car which travels over the rails of the coal charging lorry or over another rail track. It is then possible to charge the coking chambers of a coke oven battery alternatively with coal or a. liquid coking material for instance pitch, as required.

I have now above described my present invention on the lines of a preferred embodiment thereof but my invention is not limited in all its aspects to the inode of carrying it out as described and shown, since the invention may be variously embodied Within the scope of the following claims.

I claim:

1. Apparatus for charging high narrow coke ovens, heated by two oppositely disposed longitudinal heating walls, with liquid coking material comprising feed and return pipes situated above the oven roof for circulation of heated liquid coking material; charging pipe for connection therewith and extending into the oven chamber through the oven roof, and in which said charging pipe is adapted to reach nearly down to the sole of the oven chamber from the feed pipe during charging and has an outletmeans extending up from the lower end of the pipe to the height to which the oven is to be filled, said enti-N'` ies-.ns being restricted so as t0 to fiow in direction lengthwise of the hearing of the oven chamber.

2. Apparatus for charging high narrow coke ovens, heated by two oppositely' disposed longitudinal heating Walls, with liquid coking material comprising feed and return pipes situated above the oven roof for circulation of heated liquid coking material; charging pipe for'con- ,nection therewith and extending into the oven chamber through the oven roof,y and in which said charging pipe is adapted to reach nearly down to the sole of the oven chamber from the feed pipe during charging'and has aslot extending up from the lower end of the pipe tothe height to which the oven is to be lled, said slot being restricted so as to confine the liquid to flow in direction lengthwise of the heating walls of the oven chamber.

3. Apparatus for charging high narrow coke ovens, heated by two opposi-tely disposed longitudinal heating walls, with liquid coking material comprising feed and return pipes situated above the oven roof for circulation of heated liquid coking material; a charging pipe for connection therewith and extending into the oven chamber through the oven roof to the sole of the oven chamber, said circulating feed' pipes being connected with the charging pipe through a reversing cock provided with a hollow cock plug and an outlet pipe line connected to the neck of the plug through which the liquid is introduced into the oven charging pipe, said plug being opened and closed by the movement of the outlet pipe into and out of registration with the charging pipe, and said cock having a by-pass around the cock plug casing so that inl any position of the cock plug the liquid may continue to flow in circulation around the reversing cock to the circulating return pipe.

4. Apparatus for charging high narrow coke ovens, heated by two oppositely disposed longitudinal heating walls, with liquid coking material comprising feed and return pipes situated above the oven roof for circulation of heated liquid coking material; a charging pipe for connection therewith and extending into the oven chamber through the oven roofv to the sole of the oven chamber, said circulating feed pipes being connected with the charging pipe through a reversing cock provided with a hollow `cock plug and an outlet pipe line connected to the neck of the plug through which the liquid is introduced into the oven charging pipe, said plug being opened and closed by the movement of the outlet pipe into and outof registration with the charging pipe, and said cock having a by-pass around the cock plug casing so that in any position of the cock plug the liquid may continue to ow in circulation around the reversing cock to the circulating return pipe, said outlet pipe being rectangularly bent andflttinginto a funnel-like head for the charging, pipe during the charging in such a. manner that after turning the rectangularly bent pipe the charging turnmayr freely be removed, saidrectangulaij pipe serving to open and close the plug simultaneously with its movement into and out of the funnel.

5. Apparatus as claimed in claim 3 characterized by the provision of means whereby one reversing cock'is connected for movement relative to the circulating pipes Iso as to serve each of two adjacent oven chambers.

6. Apparatus as claimed in claim 3 characterized by thev arrangement of a single reversing cock carried by means of the same operating devi that is adapted for traveling above the charging openings from oven to oven of a battery of the ovens and that serves for also eiecting the introduction and extraction of the oven charging pipe into and out of the whole number of ovens.

'7. Apparatus as claimed in claim 3 and in' which the neck of the charging cock is adapted for being screwed into the mouth of the oven charging pipe before the charging, by the turning of the mouth of the charging pipe, and on further turning of the mouth of the outlet pipe when screw connected with th'e neck of the cock plug, the mouth guided on the oven charging pipe in stufing boxes, opensthe cock plug for the delivery to the oven while a simultaneous ow of a partial quantity of the liquid continues around the by-pass on through the circulation system.

8. Apparatus as claimed in-claim 3 characterized by the introduction and the extraction ofthe oven charging pipes, on the one hand, and the connection of the outlet pipe to the oven charging pipe for the charging, on the other hand, being effected by separate means.

9. Apparatus'as claimed in claim 3, and in which the reversing cock is connected with the circulation feed and return pipes by pipe sections each connected with another by a hinged joint for folding and unfolding action to reach various oven charging holes.

HERBERT GRUBER.

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