JP4191876B2 - Coke oven operation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a coke oven operating method for preventing a work delay of coke oven moving machines that are installed on the same rail and interfere with each other during operation.
[0002]
[Prior art]
Conventionally, in the coke oven, a common coal tower and dry fire extinguishing equipment are installed in the center, and a furnace group composed of a large number of kilns is arranged on both sides of the common equipment and supplied from the coal tower to each kiln of the furnace group A plurality of coke oven moving machines installed on rails provided along the coke oven were used to carry coal and red hot coke fed from each furnace group to the dry fire extinguishing equipment. In addition, since each furnace group operates independently of each other, the operation status of the coke oven moving machine provided in each furnace group is also influenced by the operation of each furnace group and is operated independently of each other. It was.
[0003]
[Problems to be solved by the invention]
However, when multiple coke oven moving machines work on the common equipment on the rail, one coke oven moving machine is installed on both sides of the common equipment to prevent abnormal access between the coke oven moving machines during operation. On the other hand, an exclusion section for eliminating the approach of the other coke oven moving machine is provided. Therefore, when a coke oven moving machine belonging to one furnace group is working in a common facility, an exclusion zone is formed to exclude the entry of the coke oven moving machine belonging to the other furnace group. The coke oven moving machine to which it belongs could not enter the exclusion zone, and was waiting in front of the exclusion zone until the coke oven moving machine belonging to one furnace group had left the common facility. For this reason, work congestion occurred in the central part of the coke oven, which is an exclusion zone on both sides of the common facility, and work delays occurred in the operation of the coke oven. Moreover, once the work delay occurs, the single cycle time of the coke oven moving machine is fixed, so it is difficult to recover the time delay, and the entire subsequent work is delayed. For this reason, there is a problem that there is a day when work delay does not occur in actual operation of the coke oven and a day when work delay occurs, and the coke oven cannot be stably operated.
The present invention has been made in view of such circumstances, and provides a method for operating a coke oven that can prevent work congestion due to an exclusion zone that occurs when using a common facility of a coke oven moving machine and enables highly efficient and stable operation of the coke oven. The purpose is to do.
[0004]
[Means for Solving the Problems]
The coke oven operating method of the present invention that meets the above-mentioned purpose is provided with a furnace group having a plurality of kilns for producing coke on both sides of a central shared facility, and each coke oven moving machine provided in each furnace group includes In a method for operating a coke oven, which repeatedly moves between a plurality of predetermined kilns in the furnace group and the common facility, performs coal conveyance and coke conveyance, and then pauses for a predetermined time, coke belonging to one furnace group The furnace moving machine is provided with an exclusion section on both sides of the common equipment to exclude the entry of the coke oven moving machine belonging to the other furnace group while the shared equipment is in use, and the coke oven moving machine belonging to the one furnace group is While the coke oven moving machine belonging to the other furnace group is stopped for the predetermined time, work is performed on the plurality of kilns arranged in the exclusion section provided on the one furnace group side.
[0005]
When the produced coke is extruded and cold coal is charged into the kiln, the temperature of the kiln decreases and a temperature difference occurs between the adjacent kilns. When viewed as a whole coke oven, in order to minimize the temperature difference between the kilns, coal charging and coke extrusion are not performed on adjacent continuous kilns, but on kilns separated by a predetermined interval. It is necessary to do so. For this reason, in the operation of the coke oven, each kiln constituting each furnace group is divided into a plurality of blocks made of kilns extracted at predetermined intervals, and each kiln in the divided block and a common facility are separated. The operation is performed by using a plurality of coke oven moving machines, and when the operation for one block is completed, the operation for the next block is performed. When the operation of one block is completed, the operation of the coke oven is suspended because it is necessary to perform operations such as water supply and equipment inspection on the coke oven moving machine.
[0006]
When the coke oven moving machine is running, while the coke oven moving machine belonging to one furnace group is using the shared equipment, the other furnace group is within a predetermined distance from the shared equipment from the viewpoint of preventing collision of the coke oven moving machine. Exclusion sections where the coke oven moving machine belonging to No. 1 cannot enter are formed on both sides of the common facility. Since a plurality of kilns constituting a furnace group are arranged on both sides of this shared facility, there must be a plurality of kilns belonging to each furnace group in an exclusion section formed within a predetermined distance from the shared facility. become. Therefore, when a coke oven moving machine belonging to one furnace group uses a common facility, a coke oven moving machine belonging to the other furnace group is connected to a plurality of kilns belonging to the other furnace group existing in the exclusion section. You will not be able to travel to the position. Therefore, in order for the coke oven moving machine belonging to the other furnace group to perform work on a plurality of kilns existing in the exclusion zone, it waits until the coke oven moving machine belonging to one furnace group leaves the common facility. There is a need. The waiting time of the coke oven moving machine in the vicinity of this common facility causes work congestion and work delay in coke oven operation.
[0007]
Therefore, in order to prevent work congestion and work delay in the operation of the coke oven, that is, to prevent the occurrence of waiting time in the vicinity of the common facility, the coke oven moving machine belonging to one furnace group uses the common facility. When there is a possibility, the coke oven moving machine belonging to the other furnace group may be prevented from performing work on a plurality of kilns existing in the exclusion zone. For this reason, when the coke oven moving machine belonging to one furnace unit has finished operation of a block and is performing water supply, equipment inspection, etc., that is, when it has been idle for a predetermined time, The coke oven moving machine to which it belongs needs only to perform work on a plurality of kilns existing in the exclusion zone. Even if the coke oven moving machine belonging to one furnace group completes operations such as water supply and equipment inspection and restarts operation, the coke oven moving machine belonging to the other furnace group is not compatible with multiple kilns existing in the exclusion zone. Since the work is completed, there is no work congestion in the operation of the coke oven due to the interference between the coke oven moving machines near the common facility.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is a conceptual diagram of a coke oven to which a method for operating a coke oven according to an embodiment of the present invention is applied, and FIG. 2 is an explanatory diagram showing an arrangement relationship between the exclusion zone and the kiln of the coke oven furnace group. FIG. 3 is an explanatory diagram showing coke oven operation scheduling in the coke oven operation method according to the embodiment of the present invention.
As shown in FIG. 1, a coke oven 10 to which a coke oven operating method according to an embodiment of the present invention is applied includes a coal tower 11 and a dry fire extinguishing facility 12, which are examples of common facilities installed in the center, Coal conveyance which is an example of a coke oven moving machine arranged on the both sides of the tower 11 and the dry fire extinguishing equipment 12 and provided with a large number of kilns for producing coke, and a coke oven moving machine arranged on the upper side of the furnace groups 13 and 14 A rail 17 on which coal charging vehicles 15 and 16 are installed, and a fire extinguishing train 18 and 19 for conveying coke, which is an example of a coke oven moving machine provided along the furnace groups 13 and 14, are installed. The rail 20 is provided. Hereinafter, these will be described in detail.
[0009]
The coal tower 11 is a facility for storing coal as a coke raw material, and the dry fire extinguishing facility 12 is a facility for cooling the produced high-temperature coke using nitrogen gas. Moreover, the coal charging vehicles 15 and 16 run on the rails 17 and supply the coal for the coke raw material loaded in the coal tower 11 to each kiln constituting the furnace groups 13 and 14. The fire extinguishing trains 18 and 19 travel on the rails 20 and convey high-temperature coke produced in the kilns of the furnace groups 13 and 14 to the dry fire extinguishing equipment 12. The furnace group 13 includes a coal charging vehicle 15 and a fire extinguishing train 18, and the furnace group 14 includes a coal charging vehicle 16 and a fire extinguishing train 19. The coal charging vehicles 15 and 16 and the fire extinguishing trains 18 and 19 are operated in association with each other. The coke extruded by the extruder 21 is conveyed by the fire extinguishing train 18 and the coke extruded by the extruder 22 is extinguished. The train 19 carries it. Then, coal is charged into the empty kiln where the coke is pushed out by the coal charging vehicles 15 and 16.
[0010]
Next, the relationship between the coal tower 11 which is a shared facility, the dry fire extinguishing facility 12, the many kilns constituting the furnace groups 13 and 14, the coal charging vehicles 15 and 16, and the fire extinguishing trains 18 and 19 will be described.
The coal charging vehicles 15 and 16 are loaded with coal in the coal tower 11, travel to the position of the kiln where coke extrusion is scheduled, and charge the coal into the empty kiln that has been extruded. The coal charging vehicles 15 and 16 after the coal charging return to the coal tower 11 again, load the coal, travel to the position of the empty kiln where the next coke extrusion is scheduled, and charge the coal. On the other hand, the fire-extinguishing trains 18 and 19 travel to the position of the kiln where coke extrusion is scheduled, receive the high-temperature coke extruded by the extruders 21 and 22, transport it to the dry fire-extinguishing equipment 12, and transfer it to the dry fire-extinguishing equipment 12. Insert. The fire-fighting trains 18 and 19 that have discharged the high-temperature coke travel to the position of the kiln where the next coke extrusion is scheduled and receive the high-temperature coke that has been pushed out. Thus, the coal charging vehicles 15 and 16 always move between each kiln and the coal tower 11 which is a common facility, and the fire extinguishing trains 18 and 19 always move between each kiln and the dry fire extinguishing facility 12 which is a common facility. is doing. For this reason, in the central part of the coke oven where the coal tower 11 and the dry fire extinguishing equipment 12 which are common facilities are installed, the coal charging vehicles 15 and 16 and the fire extinguishing trains 18 and 19 frequently run and stop.
[0011]
Then, the operation method of the coke oven which concerns on one embodiment of this invention is demonstrated in detail.
When coke is pushed out and cold coal is charged into the kiln, the temperature of the kiln decreases and a temperature difference occurs between the adjacent kilns. For this reason, coal charging and coke extrusion are not performed on adjacent continuous kilns so as to reduce the temperature difference between the kilns as a whole coke oven, but consist of kilns extracted from the furnace groups 13 and 14 at predetermined intervals. A plurality of blocks are configured, and the coal transportation work between each kiln and the coal tower 11 in the block and the coke transportation work between each kiln and the dry fire extinguishing equipment 12 are performed on the coal charging vehicles 15 and 16 and the fire train. No. 18 and 19 are used, and when the operation for one block is completed, the operation for the next block is performed. For example, when the furnace groups 13 and 14 have 82 kilns, the extrusion charging operation of extruding coke and charging coal is performed at a pitch of 5 kilns. That is, the kilns No. 1 to No. 82 included in the furnace groups 13 and 14 are divided into five blocks extracted and configured at a pitch of 5 kilns, and the extrusion charging operation of each kiln in the block is completed. The operation is carried out in units of blocks in which each kiln is charged and extruded. At this time, before the operation of a certain block is completed and the operation of the next block is started, the coke oven moving machine is suspended for a predetermined time (hereinafter referred to as block break) to perform operations such as water supply and equipment inspection. It becomes a state.
[0012]
Specifically, one furnace group 13, 14 having 82 kilns is composed of a first block consisting of No. 1, No. 6, No. 11, ... No. 71, No. 76, No. 81, No. 4, Second block consisting of 9, 14, ..., 69, 74, 79, and third block consisting of 2, 7, 12, ... 72, 77, 82 4th block consisting of No.5, No.10, No.15, ..., No.70, No.75, No.80, No.3, No.8, No.13, ... No.68, No.73, No.78 For example, the first block operation, block break, fourth block operation, block break, second block operation, block break, fifth block operation, block break, third block operation, block break Extrusion loading is performed in block units in the order of the blocks extracted at 3 block intervals. Go me. The charging / extruding operation for all blocks is completed, and the charging / extruding operation for the furnace groups 13 and 14 is completed once.
[0013]
Next, the relationship between the block operation in the furnace group 13 and the block operation in the furnace group 14 will be described.
As shown in FIG. 2, for example, in a furnace group having 82 kilns, a coke oven moving machine belonging to one furnace group uses a coal tower 11 or a dry cooling facility 12 which is a shared facility. Therefore, it is assumed that an exclusion zone is formed and the coke oven moving machine belonging to the other furnace group does not approach from the 66th furnace to the 82nd furnace in the furnace furnace of the own furnace group.
[0014]
In the work from No. 1 kiln to No. 65 kiln, even if the coke oven moving machine of one furnace group uses the shared equipment, the coke oven moving machine of the other furnace group is up to the kiln position of the target number. You can travel. However, in the case where the coke oven moving machine belonging to one furnace group is, for example, the fourth block, when the operation of the 65th kiln is finished and traveling to the 70th kiln is stopped, the coke oven moving machine belonging to the other kiln is 65 You cannot travel from the kiln to the 70th kiln and stop at the 65th kiln. When the coke oven moving machine belonging to one furnace group finishes the work in the exclusion zone and runs in the direction of No. 1 kiln, the coke oven moving machine belonging to the other furnace group runs to the position of No. 70 kiln. You can stop and start working.
[0015]
As described above, the work congestion and work delay in the operation of the coke oven due to the one coke oven moving machine waiting until the work of the other coke oven moving machine is completed. This is because the machine work is concentrated in time near the common facilities in the center of the coke oven.
Therefore, in order to prevent the operation in the furnace groups 13 and 14 from concentrating in the vicinity of the common facility in the center of the coke oven, the work of the furnace groups 13 and 14 may be started with a time delay relative to each other. Become. However, simply delaying the start of the work of one of the furnace groups will shorten the daily operation time and lead to a decrease in productivity. In the operation of the coke oven, a block break is provided when one block operation is completed. For this reason, when the furnace groups 13 and 14 are both in the block rest state, the operation of the coke oven during that time is stopped, so that the generated gas is insufficient. Therefore, by delaying the start of operations so that operations do not concentrate in the vicinity of the common facilities in the center of the coke oven, and adjusting the downtime between block breaks in block operations, coke is prevented from decreasing in productivity. The work of the coke oven moving machine near the common facility in the center of the furnace can be avoided from being concentrated in time.
[0016]
The working time for water supply, equipment inspection, etc. of the coke oven moving machine that is performed after the extrusion charging work of each kiln in the block is normally required for about 30 minutes because the work contents are fixed. Moreover, in the block operation, the time required for the work for one kiln is 11 to 12 minutes on average although it varies somewhat depending on the difference in the travel distance of the coke oven moving machine. However, in a kiln close to a shared facility, the travel distance is short, so it takes about 10 minutes. Since the coke oven moving machine belonging to one furnace group uses a shared facility, the kilns existing in the exclusion zone, which is a range where the coke oven moving machine belonging to the other furnace group cannot approach, are the 66th kiln to the 82nd kiln. Therefore, there are at most 4 kilns in the exclusion zone in the operation for each block. For this reason, if the start of work of the furnace groups 13 and 14 is shifted by 30 minutes, the operation can be prevented from being concentrated in the vicinity of the common facilities in the center of the coke oven, and work congestion hardly occurs in the operation of the coke oven. .
[0017]
Since the adjustment time for avoiding this work congestion is less than the block break that always occurs during the block operation of the coke oven, the blocks of the furnace groups 13 and 14 are prevented so that the operation rate does not decrease in the operation of each of the furnace groups 13 and 14. By creating a schedule so that breaks occur alternately, it is possible to prevent operations from being concentrated in time near the shared facilities in the center of the coke oven.
FIG. 3 shows the coke oven operation scheduling in the coke oven operation method according to the embodiment of the present invention. For example, if the operation of the furnace group 13 is delayed by 30 minutes with respect to the furnace group 14 and both start from the first block, the coke extrusion and the coal charging are the first kiln, the sixth kiln, ..., the 76th kiln, 81 When the operation of the No. 81 furnace of the furnace group 14 is performed in the order of the No. kiln, the operation of the No. 66 furnace is performed in the furnace group 13, and the problem of the exclusion section occurs only for one kiln. Further, when performing operations of the 71st to 81st kilns in the exclusion zone of the furnace group 13, the furnace group 14 is in a block rest state, and the problem of mutual interference of the coke oven moving machine does not occur at all.
[0018]
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, For example, although the time required for the operation | work with respect to one kiln was 10 minutes, with respect to one kiln If the time required for the work is shorter than the block break time, it is only necessary to delay the start of operation between the furnace groups by the block break time. In addition, even if the number of target kilns that exist in the exclusion zone increases, if the total work time of the target kiln is within the block break, the start of operation between the furnace groups is only delayed by the block break time. It's okay.
[0019]
【The invention's effect】
2. The coke oven operating method according to claim 1, wherein a coke oven moving machine belonging to one furnace group uses a common facility with an exclusion zone that excludes the entry of the coke oven moving machine belonging to the other furnace group. A plurality of kilns disposed on both sides of the coke oven moving machine belonging to one furnace group and disposed in an exclusion section provided on one furnace group side during a predetermined time of suspension of the coke oven moving machine belonging to the other furnace group Therefore, the other coke oven moving machine does not need to wait until the work in the shared equipment of one coke oven moving machine is completed, and there is no work congestion due to mutual interference of the coke oven moving machine. Stable operation of the furnace can be performed. Further, it is possible to shorten the time until the work of one block is completed, and to increase the number of coke ovens discharged per day. For example, in a coke oven that operates by dividing into 5 blocks, the time to finish the work of one block is shortened by 30 minutes compared to the conventional case, and the number of coke ovens discharged per day is 82. Increase from 97 to 97 books.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a coke oven to which a coke oven operating method according to an embodiment of the present invention is applied.
FIG. 2 is an explanatory diagram showing an arrangement relationship between an exclusion section and a kiln included in a coke oven group.
FIG. 3 is a diagram showing coke oven operation scheduling in the coke oven operation method according to the embodiment of the present invention.
[Explanation of symbols]
10: Coke oven, 11: Coal tower, 12: Dry fire extinguishing equipment, 13, 14: Furnace group, 15, 16: Charging coal, 17: Rail, 18, 19: Fire train, 20: Rail, 21, 22 : Extruder

Claims (1)

A furnace group having a plurality of kilns for producing coke is provided on both sides of the central shared equipment, and a coke oven moving machine provided in each furnace group includes a predetermined plurality of kilns in each of the furnace groups and the shared equipment. In the method of operating a coke oven that repeatedly moves between and transports coal and coke and then pauses for a predetermined time,
While the coke oven moving machine belonging to one furnace group is using the shared equipment, an exclusion section is provided on both sides of the shared equipment to exclude the entry of the coke oven moving machine belonging to the other furnace group, and the one furnace group The coke oven moving machine to which the coke oven moving machine belonging to the other furnace group belongs is suspended for the predetermined period of time to perform work on the plurality of kilns arranged in the exclusion section provided on the one furnace group side. Coke oven operation method characterized by

Images