Patent Application
20130118884
The invention relates to an apparatus by which quenched or unquenched coke is made available, this apparatus consisting of an extension of the pusher ram of the pusher machine, which is about of the length of a coke-oven chamber and arranged in one line with the coke-oven chambers, and which is pushed into the coke quenching car by the pusher machine so that the coke drops into a wharf provided behind the coke quenching car. The invention also relates to a process for the discharge of quenched or unquenched coke filled into a coke quenching car, the coke being discharged from the coke quenching car into a wharf so that the capacity of the coke wharf assigned to the quench tower is temporarily increased or an emergency discharge of the coke quenching car permitted, when the quench tower is temporarily not ready for coke quenching.
Processes for pushing the coke from a coke-oven chamber are well-known. Normally the coal is loaded into the coke-oven chamber, which can be heated from at least two sides, so that the coal is heated and the volatile coking gases degas so that the coal is converted into coke zone by zone from the walls of the coke-oven chamber so that the oven chamber yields a coke cake, which, after degassing of the volatile matter contained in the coal, is pushed into a quenching car by means of a pusher ram which travels through the coke-oven chamber.
In normal operation, a quenching car is used to take the glowing coke under a quench tower where it is typically quenched with water. In the meantime, the emptied coke oven is promptly re-loaded with new coal. The quenched coke can be discharged from a quenching car onto a coke wharf where it steams off before a conveyor belt takes it to a coke screening unit.
DE 2320057 B1 describes a process and an apparatus for the quenching of a heated material to be quenched, this material to be quenched in particular being coke, which is quenched by means of a liquid flowing through the bulk material from top to bottom; here, the bulk material height over a basically horizontal support surface covered by the bulk material is kept constant on certain conditions for steaming off, and the amount of quenching liquid evenly distributed across the bulk material is determined in a manner known per se such that it evaporates except for the part absorbed by the bulk material. The description of the process includes the discharge of the quenched coke onto a wharf.
During operation, however, disturbances of the quenching system or of the receiving devices following the quenching system may occur. In such case, the intake capacity of the quenching system will not be large enough to quench all the coke that is produced during the operation of a coke-oven battery. The excessive coke will then either burn or must be left in a coke-oven chamber for an inadequately long period. This is, however, not wanted for economical reasons. It may also happen that the quenching system stops functioning properly during operation so that the coke discharged from the coke-oven chambers cannot be quenched anymore or that full intake capacity of the receiving device assigned to the quench tower has been reached.
For this reason it would be of decisive advantage to have a process for the coke discharged from a coke-oven chamber by which it is transferred into a suitable receiving device, where the coke is quenched in the before-mentioned operational phases. This receiving device may theoretically be of any type desired, must, however, be suited for the discharge of coke which is possibly still burning or glowing. This device should also be provided with an auxiliary device to implement temporary coke quenching. It would be of further advantage if no additional equipment was required for the process so that the process was basically carried out with coke-oven batteries adequately known according to the state of the art.
The invention achieves this aim by an apparatus which consists of at least one stationary extension of the pusher ram, which is installed beside at least one coke-oven chamber and is arranged in one line or in alignment with the coke-oven chambers of the coke-oven battery or series of coke ovens. The extension is operated by the pusher machine, a receiving device being installed behind the quenching car—as seen from the coke-oven battery—into which the coke from the quenching car can be pushed by means of the extension. The invention achieves this aim also by a process by which the coke from the quenching car is transferred in quenched condition into a provided empty receiving device where the coke is stored for a limited time in quenched or unquenched condition. The receiving device is preferably a wharf.
Particularly claimed is an apparatus which serves to discharge quenched or unquenched coke from a coke quenching car into a receiving device and which is an integral part of a coke-oven battery or series of coke ovens, providing that
The apparatus which consists of a stationary extension of the pusher machine travelling in parallel to the coke-oven chamber front can be provided in any optional number and arrangement. It is, for example, also possible to arrange it between two coke-oven chambers within a coke-oven battery or series of coke ovens. Preferably, however, the extension is arranged at one of the two end sides of the coke-oven battery. It is also possible to provide one of these apparatuses each at both ends.
The apparatus according to the invention comprising the stationary extension may also be used in a system of coke-oven chambers consisting of two coke-oven batteries arranged in parallel, a pusher machine and a quenching car being arranged on optional sides. An example of a design type of two coke-oven batteries facing each other and running in parallel is described in WO 2009121469 A1.
In an optional embodiment, the coke-oven battery is a system of coke-oven batteries arranged in parallel, which is equipped with two pusher devices arranged at the outer ends and travelling in parallel to the coke-oven chamber front, and in which at least one receiving device is arranged between the coke-oven batteries, so that the coke is to be discharged from the quenching car into the internally arranged receiving device by means of the extension of one of the pusher machines arranged at the outer ends.
In another optional embodiment, the coke-oven batteries are a system of coke-oven batteries arranged in parallel, which is equipped with at least one pusher machine travelling in parallel to the coke-oven chamber front and being arranged between the coke-oven batteries; here the coke is to be discharged from the quenching car into the receiving device at the outer end by means of the extension to one of the internally arranged pusher machines according to the invention. In both of these embodiments the receiving device is arranged in one line or in alignment with the extension such that the coke is to be discharged from the quenching car into this receiving device by means of the pusher machine. In principle, however, the system of pusher device—extension—receiving device can be provided in any optional arrangement and number.
The receiving device is preferably a wharf. The extension device can be of any optional design. In an exemplary embodiment the embodiment-specific device is a pusher ram. In another embodiment the extension device is a steel girder. The pusher ram or the girder may, for example, be fitted with buffers or holding plates.
To provide movability in direction of the quenching car, the extension is, for example, fitted with rollers to allow travelling mobility in parallel with the coke-oven chambers. These rollers can be arranged underneath or above the extension, the extension then being connected with the rollers by means of suspension fixtures. In another embodiment the extension device is fitted with guide shoes for ensuring travelling mobility in parallel with the coke-oven chambers. In such case, these may, for example, be arranged underneath the extension. For this, the guide shoes are, for example, supported by a receiving guide rail or plate. Here as well, however, an embodiment is conceivable where the extension is suspended on rollers.
The other parts of the apparatus are well-known according to the state of the art. As far as the design of the quenching car is concerned, especially cars of the flat-bed type can be used. These do not require any additional auxiliary equipment when being loaded with the pushed-out coke cake and pushed by the apparatus embodying the invention. Examples of flat-bed quenching cars are mentioned in CN 2668641 Y. In principle, any sort of quenching car is suitable into which a coke cake can be pushed without any additional auxiliary equipment.
Also claimed is a process by which quenched or unquenched coke can be discharged from a coke quenching car into a receiving device and for which the apparatus embodying the invention is used.
Claimed in particular is a process by which unquenched or quenched coke is discharged from a coke quenching car into a receiving device, in which
If the receiving device assigned to the quench tower is full already, it is possible to use the receiving device embodying the invention for the coke which has already been quenched in the quench tower. If there is no spare quenching capacity, for example because the quench tower is not available, the coke can be pushed into the receiving device embodying the invention in unquenched condition. The coke is then quenched by auxiliary equipment. This may be quenching guns, for example, or quenching nozzles adequately known according to the state of the art. An example for the quenching of hot coke by means of quenching nozzles is given in DE 573867 C.
Depending on the necessity, the coke is transported by suitable conveying devices from the receiving device to subsequent applications. These are adequately known according to the state of the art. An example of a wharf with suitable downstream conveying equipment is given in DE 1269999 C.
For the purpose of the invention it is also possible, however, to use a dry cooling tower. The invention is suited for any type of coke-oven chambers, is, however, particularly suited for coke-oven chambers and coke-oven batteries of the “non-recovery” or the “heat recovery” type.
The apparatus embodying the invention involves the advantage that it is suited for discharging the coke, which may possibly still burn or glow, into a receiving device and can be provided with an auxiliary device allowing temporary quenching of the coke, not requiring any additional equipment, so that the process can generally include coke-oven batteries as they are adequately known according to the state of the art. The process embodying the invention allows compensating capacity bottlenecks with regard to the quenching equipment or the receiving device assigned to the quenching device.
The invention is explained by means of three drawings, these drawings only representing exemplary embodiments of the invention.
1 Coke-oven battery
2 Coke-oven chamber
2a Empty coke-oven chamber
2b Coke-filled chamber
4 Pusher machine
4a Pusher device
5 Machine rail
7 Quenching rail
8 Pushed-out coke cake
9 Quench tower
10
b Second wharf
11
a Pusher device extension
11b Second pusher device extension
12
b Suspension devices
12c Guide rail
13a Guide shoes
13
b Guide rail
13
c Guide shoes of pusher ram of pusher machine
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2009 054 430.5 | Nov 2009 | DE | national |
This application is the U.S. national phase of PCT Appln. No. PCT/EP2010/006913 filed Nov. 12, 2010, which claims priority to German application DE 10 2009 054 430.5 filed Nov. 25, 2009, the disclosures of which are incorporated in their entirety by reference herein.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP2010/006913 | 11/12/2010 | WO | 00 | 7/24/2012 |
