FR2481711A1 - Coke dry-quenching plant - has great manoeuvrability of lifts and thus needs fewer auxiliary machines - Google Patents

Abstract

Coke dry quenching plant has vertical quenching chambers arranged in a row each having a coke charging device in its upper part. Hoisting shafts are located opposite corresp. chambers and there are lifts each of which has a carriage for transporting a coke car up or down a hoisting shaft to or from the coke charging device. A track extends along the quenching chambers on the level of the lifts coming out of the hoisting shafts. There is a device for transferring the carriage and the lift in a horizontal direction along the track and perpendicular to it. The appts. provides a coke dry quenching plant which, due to great manoeuvrability of the lift is more efficient in operation and needs fewer auxiliary machines. There is also a decrease in coke furnace loss and a redn. in the amt. of harmful impurities discharged into atmos.

Description

 The present invention relates to the chemical coke industry and in particular has the aim of a dry coke extinguishing device.

 The invention can also be used in a particularly advantageous manner in combination with the powerful modern coke tower batteries.

 As is known, the technological process of coke production ends with its discharge at a temperature of 950 to 1100 C. In order to bring about the combustion of incandescent coke after its discharge, as well as to make it suitable for transport and storage , it is necessary to lower its temperature to 250 to 100 C, that is to say "to extinguish" the coke.

The most advanced method of quenching coke is dry quenching, which not only provides better quality coke, but also improves the technical and economic characteristics of blast furnace fusions, improves working conditions in foundries as well as largely solving the problem of protecting the atmosphere against polluting ejections.

 Currently, all coke oven batteries are fitted with dry coke extinguishing systems. These installations are of extremely varied designs.

For example, a dry coke extinguishing installation is known, comprising extinguishing chambers arranged in a row parallel to the front of the coke ovens.
All the extinguishing chambers are located inside a metal earcasse which is provided, in its upper part, with rails for moving the hoist.

Each of the groups of extinguishing chambers (2 to 4 chambers) is fitted with a lifting shaft. Said elevating wells are located in the same row as the extinction chambers. In the lower part of each well is a device used to remove the bucket loaded with glowing coke from the coke wagon and to move it to the center of the elevator shaft. It should be noted that the red coke is brought to the chambers using two coke wagons pulled by an electric locomotive parallel to the front of the extinguishing chambers.

However, in the installation which has just been described, the bucket containing the incandescent coke must be moved over a considerable distance along several extinguisher chambers before being discharged into one of them.
Thus, to load the fourth chamber from the elevator shaft, the bucket must be made to travel more than 50 meters. During this time, the glowing coke acts not only on the bucket but also on the carcass of the installation and on the freight elevator. This thermal action results from breakdowns and premature wear of the equipment, risk of damage, a decrease in the efficiency of the dry coke extinguishing installation. The machine operating graph becomes more complicated and extended over time. Increased combustion of the coke takes place. The fact of providing a device for removing from the wagon the bucket with the incandescent coke also contributes to reducing the efficiency of the installation. On the other hand, the locomotive towing the two coke wagons must approach the same well as many times as there are extinguishing chambers to be served, which increases the thermal action undergone by the structures of the fire extinguisher installation.

 The disadvantages which have just been mentioned have to some extent been avoided in another dry coke extinguishing installation, which comprises vertical extinguishing chambers arranged in a row and having top loading holes as well as elevating wells each located opposite the corresponding chamber. Furthermore, each of the elevating wells, in this installation, is provided with a hoist provided with a trolley intended to move the bucket with the coke from the well To the loading hole of the extinguishing chamber. The transport of glowing coke to the chambers is carried out using two wagons moved by the same electric locomotive.

 Such a design of the dry coke extinguishing installation makes it possible to shorten the journey made by the freight elevator with the bucket compared to the installation which has been described above, but the machinery necessary for carrying out the process becomes more complicated.

Thus, an eight-chamber fire extinguisher system must have eight elevating shafts and eight freight elevators. Besides this, the graph of machine use becomes more complicated because of the maneuvers to be subjected to the coke wagons.

Indeed, the locomotive towing the two coke wagons must dock twice on the same well, first to transmit a skip loaded with red coke and then to recover the empty skip. By recovering the empty bucket the locomotive brings to the well another bucket loaded, this one, with glowing coke, which increases the thermal action on the structures of the dry coke extinguishing installation.

 The invention therefore relates to a dry coke extinguishing installation having increased efficiency and a reduced number of auxiliary machines thanks to the improvement in the maneuverability of the freight elevator.

 This problem is solved in that the dry coke extinguishing installation, comprising vertical extinguishing chambers arranged in a row and having top loading devices, elevator shafts each situated opposite the extinguishing chamber. corresponding tion and freight elevators each provided with a trolley to move the bucket with coke brought up from the elevating shaft to the device for loading the corresponding extinguishing chamber, and vice versa, is characterized, according to l invention, in that it is provided with a boom erected along the extinguishing chambers at the exit of the hoists from the lifting shafts, and of a device ensuring the movement of the lift carriage in a plane horizontal on the boom and perpendicular to it.

It is advantageous that the device for moving the lift carriage in the horizontal plane on the boom and perpendicular thereto is produced in the form of a platform, the undercarriage of which rests on the boom, and that on this platform, perpendicular to the longitudinal axis of the boom, are arranged rails ensuring the movement of the lift carriage to the loading hole of the corresponding extinguishing chamber.

 It is possible that the boom and said platform bearing on it via its undercarriage are located on one side of the extinguishing chambers so that the longitudinal axis of the boom passes by the lifting well centers.

 It is also possible that said platform is located above the elevating shafts and the loading holes of the extinguishing chambers, its running gear bearing on a boom arranged on both sides of the extinguishing chambers.

 It is also useful that the device for moving the bucket with the coke in the horizontal plane on the boom and perpendicularly to it contains four pairs of motor bogies with balance forming the undercarriage of the lift truck load, one of said balance bogies of each of said pairs being liftable and arranged perpendicular to the other.

 It is also useful that the device for moving the bucket with the coke in the horizontal plane on the boom and perpendicular to it contains four bogies with balance wheels forming the undercarriage of the goods lift carriage, each of said bogies can rotate around a vertical axis, and that on the lift carriage is mounted a cylinder.

Such an embodiment of the installation makes it possible to obtain the displacement of the bucket with the coke in two mutually perpendicular directions in the horizontal plane of arrangement of the devices for loading the extinguishing chambers. This makes it possible to reduce the number of auxiliary machines due to the increased maneuverability of the hoists and to increase the operating efficiency of the installation.

Other characteristics and advantages of the invention will be better understood on reading the description which follows of several embodiments illustrated by the accompanying drawings in which
- Figure 1 shows the relative layout diagram of the dry coke extinguishing system, the battery of coke ovens and coke wagons;
- Figure 2 shows the same installation as Figure 1, plan view;
- Figure 3 gives an overview of the coke quenching installation according to the invention
- Figure 4 shows a variant embodiment of the installation according to the invention, in which the boom and the platform resting on it by means of its undercarriage are arranged on the same side of the extinguishing chambers (view along arrow A in Figure 3);
- Figure 5 is a fragmentary view, on a larger scale, of the installation of Figure 4 ;;
- Figure 6 shows the same installation as Figure 5, seen along arrow B9
- Figure 7 shows, according to the invention, the platform supporting the freight elevator, with partial cutaway from the upper part of the extinguishing chamber;
- Figure 8 shows the same platform as Figure 7, seen along arrow C;
- Figure 9 shows the freight elevator with partial cutaway lo-- cabin, view follow arrow D of Figure 8;
- Figure 10 shows, according to the invention, an embodiment of the device for moving the lift carriage in a horizontal plane on the boom and perpendicular thereto, with four pairs of balance bogies;
- Figure II shows the same device as Figure 10, seen from the side of the extinguishing chambers;
- Figure 12 shows the same device as Figure 10, seen from the side of the boom;
- Figure 13 shows the same device as Figure 12, seen along arrow E;
- Figure 14 shows, according to the invention, an embodiment of the installation, in which the device for moving the hoist trolley is produced in the form of bogies with lifting and rotating balance beams (overview); ;
- Figure 15 is a fragmentary view of the device of Figure 14, seen from the side of the extinguishing chambers;
- Figure 16 shows a graph of operation of the installation.

A description is given below, by way of example, of a dry coke quenching installation comprising eight quenching chambers.

 As can be seen in FIGS. 1 and 2, the dry coke extinguishing installation is located near coke oven batteries 1 and 2 parallel to the front of the coke ovens. The installation is served by two coke wagons 3 and 4 pulled by an electric locomotive 5.

The coke wagons 3 and 4 are fitted with removable skips 6 and 7. The coke wagons 3, 4 run on a rail track 8 (Figure 2) placed parallel to the front of the coke ovens in batteries 1 and 2 and passing below elevating shafts 9 of the coke dry quenching installation.

 The dry coke extinguishing installation comprises extinguishing chambers 101-n arranged in a row parallel to the front of the coke ovens (n # 8). In its upper part, each of the extinguishing chambers has a loading device 11 used for loading the incandescent coke into the extinguishing chamber 10, while in the lower part is a device 12 (FIG. 3) used for discharging the coke quenched on a conveyor 13. The quenching chambers 10 are placed in a metal carcass 14 provided with gangways 15 and stairs 16.

Opposite each extinguishing chamber 10, are the elevating shafts 91 n with guides (not shown) for the movement of the freight elevator 171-m
The dry coke extinguishing system has three hoists (m = 3), one of which is a reserve. Each of the lift 17 has a carriage 18 used to move the skip 6 or 7 remented from the elevating well 9 to the device 11 for loading the extinguishing chamber 10 and in the opposite direction.

 According to the invention, along the extinguishing chambers 10, at the exit of the goods lift 17 from the elevating shafts 9, a boom 19 is provided with rail tracks 20 (FIG. 4), and it is provided in addition to a device for moving the carriage 18 of the load bar 17 in a horizontal plane on the boom 19 and perpendicular thereto. This makes it possible to maneuver the freight elevators 17 in two mutually perpendicular directienses in a horizontal plane thereby reducing to two the number of freight elevators necessary to serve 4 or 5 or more extinguishing chambers the installation as a whole.

 FIG. 4 represents an embodiment of the coke sect extinction installation, according to which the device for moving the carriage 18 of the freight elevator 17 in a horizontal plane on the boom and perpendicular thereto is produced under form of a platform 21 which is supported by its undercarriage 22 on the boom 19. On the platform 21 are placed, perpendicular to the longitudinal axis of the boom 19, rails 23 on which the carriage 18 of the freight elevator 17 moves towards the loading device 11 of the corresponding extinguishing chamber 10 and in the opposite direction.

 The boom 19 (Figures 4, 5, 6) and the platform 21 which moves thereon are located on the same side of the extinguishing chambers 10. The longitudinal axis of the boom 19 passes through the center of each of the holes of the elevating shafts 9. So that the lift can move towards the loading device II of an extinguishing chamber 10, perpendicular to the boom 19, on the platform 21, are arranged rails 23, while the carcass of the dry coke extinguishing installation has rails 24 placed at the same level as the rails 23.

The freight elevator is fixed to the platform 21 using clamps 25. This embodiment is therefore convenient.

According to another embodiment (FIGS. 7, 8, 9), the boom 19 is mounted on the carcass 14 on both sides of the extinguishing chambers 10, the platform 21 being located above the elevator shafts 9 and extinction chambers 10. The undercarriage 22 of the platform 21 rests on the track of rails 20 placed on the boom on either side of the extinction chambers 10, while the rails 23 installed on the platform 21 put the elevating shafts 9 into communication with the corresponding loading devices II of the extinguishing chambers
The platform 21 has a horizontal opening 26 through which pass the guides and the gripping members of the freight elevator. All the starting and adjusting devices for the undercarriage controls 22 of the platform 21 having the form balance bogies are installed in a cabin 27. The electrical energy is supplied by means of electrical outlets 28 (FIG. 7).

 The hoist 17 of the dry coke extinguishing installation is in the form of a crane carriage supporting a target drum 29 mfl by an electromechanical control and davits 30. The undercarriage 31 of the carriage 18 of the freight elevator 17 can be produced in the form of balance bogies.

 The freight elevator 17 moves on the platform 21 thanks to a lantern control 32 comprising a spindle wheel 33 and a rack 34. The rack 34 is fixed to a farm 35 installed on the platform 21. The control lantern 32 is located on either side of the freight elevator 17 of the dry coke extinguishing system. The electrical supply for the controls of the load bar 17 is carried out by means of a flexible target 36 suspended from a target 37 stretched between uprights 38 or 39, or else by means of a trolley. Stops 40 are provided to limit the path of the freight elevator 17.

 The hoist is equipped with a gripping member comprising guides 41 in which, by means of rollers 42, a hook 43 moves. The latter, during transport, keeps the bucket 6 or 7 of the coke wagon suspended . The bucket 6 (7), the guide 41 and the handling hook 43 are covered with a sheath 44 diverting the dust and the gases towards a ventilation tube 45.

The horizontal opening 26 made in the platform 21 is provided for the positioning of these elements (dotted line in FIG. 9).

This embodiment is more advantageous because, in this case, there is no longer any need for the rails 23 disposed on the platform 21 at each of the tracks of the rails 24 above the loading devices II of the chambers 10.

In the embodiment of the dry coke extinguishing installation shown in Figures 10, 11, 12, 13, the dispositi! of movement of the carriage 18 of the freight elevator 17 in a horizontal plane on the boom 19 and perpendicularly to the latter comprises four pairs of balance motor bogies: four balance bogies 46 intended to move the freight elevator 17 on the rails 20 of the boom 19 above the elevating shafts 9, and four balance bogies 47 intended to move the hoist on transverse rails 48 of the boom and on the rails 24 of the carcass of the dry extinguishing installation of coke, the rails 48, 24 being on the same level. To be able to put the balance bogies alternately on the corresponding rails, the hoist is provided with lifting cylinders 49.

 The wheel sets of these bogies (Figures 12 and 13) are reciprocally perpendicular. The balance bogie 47 used to move the freight elevator 17 towards the loading device lides the extinguishing chamber 10 is of the liftable type and, during the movement of the freight elevator 17 on the boom 19, occupies its high position extreme and goes over the rails 48 with some play.

 The balance bogie 47 (FIG. 13) is mounted movably on a frame rising in guides 50.

The movement of the bogies 47 is effected by means of a hydraulic control 51 by means of a transmission by lever and articulation, comprising elements 52, 53.

The articulation 54 of the element 52 is attached to the carriage 18 of the freight elevator 17.

Figures 14, 15 also show an embodiment of the installation, according to which the device for moving the carriage 18 of the freight elevator 17 in a horizontal plane on the boom and perpendicular thereto comprises four balance bogies 55 Each of said balance bogies 55 is mounted on a vertical axis 56 in bearings 57, 58 fixed to the carriage 18 of the freight elevator 17. The rotation of the carriage 18 of 900 is achieved by means of a gear transmission 59, 60 of the electric control 61. The lifting of the freight elevator 17 during the rotation of the bogies 55 of 900 is done using lifting cylinders 62 incorporated in the carcass of the freight elevator.

In steady state, the dry coke extinguishing system operates as follows (Figures 1, 2, 16). The incandescent coke is brought to the installation from the batteries 1. 2 of coke ovens in two coke wagons 3, 4 coupled to the electric locomotive 5 running on the rail track 80 The latter is placed parallel to the front of the ovens at coke gt of extinguishing chambers and passes below the elevating shafts 9.

Each of the coke wagons 3, 4 is fitted with a removable bucket 6, 7 into which the coke delivered by the coke ovens is loaded. The convoy made up of two coke wagons 3s 4 and the electric locomotive 5 serves, in accordance with the charging diagram, two batteries of coke ovens 1 and 2.

 The operating graph of the freight elevators 17 of the dry coke extinguishing system and of the wagons 3, 4 is shown in FIG. 16. For greater clarity, it will be assumed here that the start of the work coincides with the need to load the coke in the first room 101, thereafter the rooms are loaded successively in the order of growth of their numbers 102 to 108.

After loading the last (eighth) chamber, the cycle repeats. We will also admit that the chargament concerns all the rooms, that is to say that the work takes place without a reserve room
Leaving spare chembres and possible modifications to the successive order of loading of the chambers does not change the principle and the operating procedure of the hoists and coke wagons.

At the start of the operation of the machines, the electric locomotive 5 brings the coke wagons 3, 4 with the empty skips 6, 7 for example to the battery of coke ovens 7 where the skip 7 of wagon 4 is loaded. At this time, the freight elevators 171 and 172 are located on the boom 19 above the elevating shafts 91 and 92 respectively of the chambers 101 and 102.

After the coke has been removed from one of the ovens in battery 1, the convoy (the electric locomotive 5 and the coke wagons 3, 4 with the skips 6, 7) returns to the dry coke extinguishing system and arrives just under the elevating shafts of rooms 101 and 102.

The dimensions of the convoy and the elevator shafts are adapted so that the buckets 6, 7 of the two coke wagons 3, 4 coincide with the openings of the elevator shafts. In this position, the freight elevator 171 takes hold of the bucket 7 loaded with coke and transports it to the chamber 101 to discharge it there. Meanwhile, the hoist 172 remains on the boom 19 above the elevator shaft 92 of the chamber 102 while waiting for the arrival of the coke, while the convoy returns to the coke ovens and resumes from one of the battery ovens 2 the bucket 6 of the coke wagon 3.

 The convoy carrying the coke-laden skip of wagon 3 moves to the dry coke extinguishing system and stops again in the area along the axis of the elevating shafts 91 and 92 of chambers 10 * and 102 (as previously).

In this position, the freight elevator 171 puts the empty skip 7 back on the wagon 4 while the freight elevator 172 removes the skip 6 loaded with coke from the wagon 3 and transports it to the chamber 102.

 This done, the convoy returns to the battery 7 of coke ovens to load the coke coming from the next oven into the bucket 7 of wagon 4.

it emerges from the example of these two passes (FIGS. 1, 2, 16) that the coke is taken in turn from the batteries I and 2 respectively in the buckets 7 and 6 of the wagons 4, 3 and the two freight elevators they also work alternately: one puts the coke-laden skip back on top of the coke dry extinguishing system, while the other puts the empty skip back on the coke wagon.

To load the chambers 103 and 104, the two hoists must move on the boom 19 and stop in the axis of the elevating shafts respectively 93 and 94. The hoist 172 moves towards the shaft 94 with the empty skip, the freight elevator 171 arrives at the well 93 without skip, and the two freight elevators await the arrival of the convoy with the coke.

 During the third pass, the freight elevator 171 removes the loaded skip 7 from wagon 4 while the freight elevator 172 returns the empty skip to wagon 3. While the loading of room 10 continues, the convoy returns to the battery 2 and supports the coke coming from the next oven in the bucket 6 of wagon 3.

Then the convoy returns to the dry coke extinguishing system, making the fourth pass. In this position, the freight elevator 171 puts the bucket 7 back on the wagon 4, while the freight elevator 172 removes the bucket 6 from the wagon 3 and transports it to the chamber 104.

 The successive order of loading chambers 105, 6, 7, 8 is shown in the graph in FIG. 16.

The convoy makes a fifth pass, a sixth. pass, etc. After loading the chamber 107 and returning the empty bucket 7 to the wagon 4, the freight elevator 171 completes the first loading cycle and returns to the boom 19 to the loading device II of the chamber 10t, while the elevator -load 172, after having loaded the chamber 108, returns with the empty bucket to the well 92 of the chamber 102.

Here the two freight elevators 17 await the first pass of the convoy to start the second cycle of loading the rooms with coke. This cycle is carried out in the same successive working order of all the machines as the first cycle which has just been described.

In this way, the two freight elevators (the freight elevator 173 shown in Figures 1,2 is in reserve) cooperating with the coke wagons move on the platform 19 and the carcass 14 of the extinguishing chambers 10 in reciprocally perpendicular directions.

 The change in the direction of movement is ensured by the device for moving the carriage 18 of the freight elevator 17 in a horizontal plane on the boom 19 and perpendicular thereto, this device possibly being of different designs. If this device is in the form of a platform 21 bearing on the boom 19 arranged on either side of the extinguishing chambers 10 (Figures 7, 8 and 9), the change in the direction of movement is as follows.

 The freight elevator 17 is located on the platform 21 resting on the rails 23, placed on the carcass of said platform, by means of its rolling bogies 31. In the working position, the elevator load 17 is placed below the axis of the elevator shaft 9 as shown in FIG. 4, and, in this position awaits the arrival of the wagon d coke 3 or 4 with the bucket 6 or 7 filled with glowing coke .

 When the bucket 6 or 7 is placed in the axis of the elevator shaft 9 of the extinguishing chamber 10 to be loaded, the control 29 of the freight elevator 17 is brought into play and the hooks are placed on the bucket 6 or 7 handling 43 (in the extreme high position in FIG. 7) which grips the bucket by its pins (not shown). To reassemble the bucket 6 or 7, the control 29 of the goods lift 17 is restarted and the bucket is hoisted to the top of the installation. The guide rollers 42 of the handling hooks 43 move first in the guides of the elevating shaft 9 and then in the guides 41 of the load bar 17 thereby preventing the rocking of the bucket during the hoisting. Once the bucket has reached the extreme high position, the control 29 is automatically put out of action.

 The following operation consists in transporting the bucket 6 (7) with the coke to the loading device 11 of the extinguishing chamber. To do this, the undercarriage controls 31 are started up and the load-carrying device 17 arrives at the next station by automatically stopping above the extinguishing chamber 10 to be charged (dotted line in FIG. 7). in this position, the control 29 of the goods lift 17 is restarted, the bucket 6 or 7 is placed on the loading device II and the incandescent coke is poured into the extinguishing chamber 10 (the unloading process and the construction of the device for discharging the dry coke extinguishing system are not the subject of the present invention).

The coke having been discharged, the bucket 6 or 7 is pulled to its extreme high position and the freight elevator 17 returns to the starting position, as shown in FIG. 7. In this position, the controls of the undercarriage 22 of platform 21, the latter moving towards the loading device II of the next extinguishing chamber 10 & charging, where it awaits the arrival of the empty coke wagon 3 or 4. As soon as the empty coke wagon 3 or 4 is placed in the vertical axis of the elevator shaft 9, the control 29 is brought into play to rest the empty skip 6 or 7 on the coke wagon.

 Once the container 6 or 7 has reached the extreme low position, the handling hooks 43 open automatically and release the container. In this same open position, the handling hooks 43 are pulled slightly upwards, after which the freight elevator 17 awaits the arrival of the wagon carrying a bucket filled with coke.

The hoisting of the loaded bucket is then carried out in the same order as that which has just been described.

 If the device for moving the carriage 18 of the freight elevator 17 in a horizontal plane on the boom and perpendicular thereto is in the form of a platform 21 resting on the boom 19 which is itself located on one side of the extinguishing chambers 10 (Figures 4, 5, 6), the order of operation of the machines is as follows. At the start, the freight elevator 17 is located on the platform 21 as seen in FIG. 4.

The freight elevator 17 is fixed on rails 23 of the platform 21 by means of clamps 25. The freight elevators 17 being in this position, the platform 21 can move over the wells 9 along the boom 19.

To mount the bucket 6 or 7 containing red coke, the platform 21 is stopped in the axis of the corresponding elevator shaft 9 and the undercarriage 22 is blocked (fixed on the rails). 17 places its handling hooks 43 on the hoisting bucket, grabs the bucket and mounts it in the extreme high position.

Then the controls of the undercarriage of the freight elevator 17 are started and the latter travels on the rails 23, 24 towards the extinguishing chamber 10 to be loaded. The successive order of operation of the freight elevator is the same as that described above and shown in FIG. 16.

Once the coke has been poured out, the freight elevator 17 transporting the empty bucket returns to the platform 21 and is fixed there by clamps 25. The freight elevator 17 is in this position, the platform 21 moves to the next elevator shaft 9. The descent of the empty container onto the corresponding wagon & coke is done as described above.

 Figures 10, 11, 12, 13 show the embodiment according to which the device for moving the carriage 18 of the freight elevator 17 is provided with balance bogies 46, 47 reciprocally perpendicular. To move the hoist 17 on the boom 19, the controls of the balance bogies 46 are started, while the bogies 47 are raised in the extreme high position.

 To move the freight elevator 17 towards the extinguishing chamber 10 perpendicular to the boom 19, it is stopped in the axis of the corresponding extinguishing chamber 10 and the lifting cylinders 49 which raise the freight elevator 17 at a certain height. Then the control 51 is started and the balance bogies 47 are placed on the rails 48 by fixing them in the carcass of the freight elevator 17. The jacks 49 are cut and the freight elevator 17 is installed on the rails 48 Then the controls of the bogies 47 are switched on and the lift 17 moves towards the extinguishing chamber 10 on the rails 48, 24. In order to return the lift to the boom 19, these operations are carried out in reverse order.

To change the direction of movement of the loadlift fitted with mechanisms with the liftable-rotating balance bogies 55 (Figures 14, 15), proceed as follows. The freight elevator 17 is stopped in the axis of the extinguishing chamber 10, the lifting cylinders 62 are brought into play, the freight elevator 17 is raised to a certain height. Then the control 61 is started and the balance bogie motor 55 is turned by 900 so that its wheels are arranged in the axis of the rails 24 of the carcass 14 of the extinguishing chambers 10. Then the cylinders are disconnected 62 and the freight elevator descends on the rails 24. The bogie controls 55 are switched on and the freight elevator 17 rolls towards the extinguishing chamber 10. To return the freight elevator 17 to the boom 19, these operations are repeated in reverse order.

 The use in a coking plant of the dry coke extinguishing installation which is the subject of the present invention makes it possible to reduce the number of auxiliary machines and to increase the operating efficiency of said installation, because the boom additional and the device for moving the goods lift carriage in a horizontal plane along and at right angles to the boom allow the goods to be moved in two mutually perpendicular directions, which reduces their traJet to a minimum this.

 This results in a reduction in coke losses and a reduction in the thermal action exerted on the metal structures of the machines and equipment of the dry coke quenching installation.

The hoist trolley movement devices available to each hoist allow two hoists to be used simultaneously on two empty rooms and to serve two extinguishing chambers and two coke wagons at the same time, allowing '' increase the maneuverability of coke wagons at the same time.
On the other hand, the shortening of the journey and the duration of movement of the freight elevator with the bucket and of the bucket with the glowing coke above the structures of the dry coke extinguishing system (graceful to the rolling of hoist on the boom) significantly increases the service life of the installation. The high maneuverability of the machines also makes it possible to reduce polluting ejections into the atmosphere.

By reducing the number of hoists and their repair and maintenance costs, as well as reducing coke losses, a considerable economic effect is obtained. By reducing the thermal effects exerted on structures and equipment to a minimum, we can increase their service life and reduce repair costs.

Of course, the invention is in no way limited to the embodiments described and shown which have been given only by way of example. In particular, it includes all the means constituting technical equivalents of the means described as well as their combinations if these are executed according to its spirit and implemented within the framework of protection as claimed.

Claims (6)

R E V E N D I C A T I O N S 1.- Dry coke extinguishing installation, 'comprising vertical extinguishing chambers arranged in a row and equipped with top loading devices, lifting shafts each situated opposite the corresponding extinguishing chamber, and hoists each provided with a cart to move the coke bucket, fine on it, from the lifting shaft to the device for loading the corresponding extinguishing chamber and vice versa, characterized in that it is provided with a boom erected along the extinguishing chambers at the exit of the hoists from the elevating shafts, and a device ensuring the movement of the hoist's trolley in a horizontal plane on the jetty and perpendicular thereto. 2.- Installation according to claim 1, characterized in that the device for the movement of the lift carriage in a horizontal plane on the boom and perpendicular thereto is in the form of a platform supported by its running gear on the boom, and in that rails placed on this platform perpeadicular to the longitudinal axis of the boom ensure the movement of the lift carriage to the loading hole of the chamber d extinction corresponding to  3.- Installation according to claim 2, characterized in ee that the boom and the platform bearing on it via its undercarriage are located on the same side of the extinction chambers so that the longitudinal axis of the boom passes through the center of each of the holes in the elevator shafts.  4.- Installation according to one of claims 1 and 2, characterized in that said platform is located above the elevatours wells and devices for loading the extinguishing chambers, its running gear bearing on a boom arranged on either side of the extinguishing chambers.  5.- Installation according to one of claims 1 to 4, characterized in that the device for moving the lift carriage in a horizontal plane on the boom and perpendicular thereto comprises four pairs of motor bogies with balance constituting the undercarriage of the goods lift carriage, one of the balance bogies of each of said pairs being lifted and arranged perpendicular to the other. 6.- Installation according to one of claims 1 to 4, characterized in that the device for moving the lift carriage in a horizontal plane on 'the boom and perpendicular thereto comprises four motor bogies with balance constituting the undercarriage of the goods lift carriage, each of said bogies being able to rotate about a vertical axis, a jack being mounted on the goods lift carriage.