JPS62285980A - Method and apparatus for charging coke oven with coal - Google Patents

Abstract

PURPOSE:To conduct stable, continuous, efficient coal charging even when the cake strength is variable, by applying vibration and pressure to coal, concurrently with the feeding of coal into a plurality of coal receiving cases of a charging car from a coal tank, so as to produce a consolidated cake and then feeding the cake into a carbonization chamber. CONSTITUTION:Charging coal 11 in a coal tank 1 is fed through a rotary feeder 5 and branched coal feed chute 7 provided in a coal feeder 3 into a plurality of coal receiving cases 6 which are provided on a charging car 12, each have a vibrating rod 29 of consolidation means 13 inserted therein and are being vibrated through a vibrator 28. Pressure is applied by the vibration of the vibrating rod 29, and the vibrating rod 29 is elevated in accordance with the feed of the charging coal 11, thereby producing a consolidated cake 16 having a bulk density of 0.7-1.1t/m<3>. Then, the charging car 12 is run on rails 39 so that an opening 35 disposed on the charging car 12 is positioned directly above a hopper 10 provided over a carbonization chamber 8. Concurrently with the opening of a bottom plate 19 through coal receiving case carriage means 31, roller 24 and rails 25, a cylinder 37 disposed in a cake opening means 36 is extended into the case 6 and the upper surface of the cake 16 is compressed by a push plate 38, thereby enabling the coal to be fed from the hopper 10 into the carbonization chamber 8.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Industrial Field of Application] The present invention involves pressure-forming charged coal using only the moisture contained during charging, and forming it into high bulk density consolidated coal. The present invention relates to a method and device for charging coal in a coke oven that improves the packing density in a coking chamber by increasing the packing density in a coke oven, and in particular to a method for charging coal in a coke oven in which the charging coal is press-formed into a compacted cake on a coal charging car. The present invention relates to a charging method and an apparatus therefor.

[Prior Art] Generally, a coal loading car is used to charge the charging coal into the carbonization chamber in a room furnace type coke oven, and the charging coal is stored from the coal tank in the hopper that leaks into the coal loading car, and then the hopper It is well known that the material is charged into the carbonization chamber from the charging port while falling under gravity through a chute provided at the bottom. This method uses a molding method in which briquette coal is mixed into powdered charged coal in order to increase the packing density in the coking chamber and improve coke strength. In order to solve this problem, we previously proposed a charging method and apparatus for charging coal as described in Japanese Patent Application No. 59-25790.

This compaction means pressurizes and compacts the charged coal discharged from the hopper discharge port of the coal loading car that is transferred to the upper part of the coking chamber. The receiver consists of a consolidation cylinder that is inserted into the cylinder, a consolidation plunger that reciprocates in the consolidation cylinder in the axial direction to consolidate the columnar charged coal in the axial direction, and after consolidation, the consolidation block is moved by gravity. The material was dropped and charged into the carbonization chamber through the charging port.

However, in the above-mentioned charging method and apparatus, the charged coal is compacted when it is discharged from the hopper and then charged into the carbonization chamber as it is, so the compaction block must be made into a small shape that can pass through the charging port of the carbonization chamber. Therefore, the number of compacted blocks to fill the carbonization chamber increases, and since the compacted blocks are molded intermittently and in series, the molding takes time and the charging capacity is small.

Furthermore, a large hydraulic unit, which is the drive source for the compaction means, must be mounted on the coal loading car, resulting in the problem that the coal loading car becomes large and heavy.

In order to solve these problems, the present inventors previously jointly proposed a charging method for charging coal and an apparatus therefor as described in Japanese Patent Application No. 164.75/1982. This is based on the knowledge that it is more efficient to mold compacted coal in a small number of large meters than to mold a large number of compacted coals in a small amount. A large compacted cake corresponding to the amount of coal to be charged is formed in one piece, and while being pushed over the charging port, it is divided into columnar cakes of a size that matches the diameter of the charging port, and the weight is dropped from the charging port and charged into the carbonization chamber. It was designed to do so. As shown in FIGS. 6 and 7, the device consists of a coal receiving case C that receives charging coal fed from a coal tank (not shown) on a coal loading car a, and The receiver includes a consolidation means (not shown) for consolidating the charged coal into a consolidated cake d, an extrusion means e for extruding the consolidated cake d consolidated by the consolidation means, and extrusion means e to extrude the consolidated cake d. The compacted cake d is divided into columns and charged into the carbonization chamber f. : Equipped with a dividing means to lead,
The above-mentioned consolidation means is provided in a coal tank other than the coal loading car a, for example, and other means are installed in the coal receiving case C other than the consolidation means and run between the coal tank and the charging port q of the carbonization chamber f. This is installed on a coal charging car a for transporting charged coal.

This eliminates the need to mount a large compaction means on the coal loading car a, and eliminates the weight and space required for the compaction means in the coal loading car a.

[Problems to be Solved by the Invention] By the way, the method and apparatus for charging coal described in the above-mentioned Japanese Patent Application No. 60-1G475 Mei 18m have the following problems.

The strength of the compacted cake d becomes unstable depending on the weather. This is because the moisture content of the charged coal varies in the range of 7 to 10% depending on the weather (humidity in the atmosphere), and the moisture content of the charged coal has a large effect on the strength of the compacted cake d. If the strength of the consolidated cake d is weak due to the weather, the indenter cake d will be divided by its own weight before extruding the predetermined amount of division when extruding the consolidated cake d by the extrusion means e, and 1q of columnar cakes will not be produced the prescribed number of times. There was a problem.

On the other hand, if the strength of the consolidated cake d is too strong, it becomes difficult to divide it using the dividing means, and as a result, it becomes impossible to charge it into the charging port Q.

Furthermore, when the bulk density of the compacted cake d is low, its strength is low, and there is a problem that the compacted cake d collapses during extrusion, making it impossible to process.

In view of the above-mentioned problems, the present invention is capable of stably charging coal that has been consolidated into a compacted cake without being affected by the weather, and can process even compacted cakes with low bulk density. The object of the present invention is to provide a method for charging coal in a coke oven and an apparatus therefor.

[Means for Solving the Problems] (1) In order to solve the problems related to the charging method of charging coal in a coke oven, the method of the present invention involves charging charging coal supplied from a coal tank on a coal loading car. A plurality of compacted cakes are formed into a size that can pass through the charging port of the carbonization chamber, and then the plurality of compacted cakes are sequentially transported from a coal loading car to the charging port and charged. .

(2) In order to solve the problems related to the charging device for charging coal in a coke oven, the device of the present invention is installed in the above-mentioned coal loading car, and the charging coal supplied from the above-mentioned coal tank is transferred to the above-mentioned carbonization chamber. A coal receiving system in which a plurality of coal receiving cases are formed as compacted cakes to a size that can pass through the charging port, and a plurality of coal receiving cases holding the compacted cakes are sequentially transferred to the charging port. and a cake opening means for opening a plurality of coal receiving cases sequentially transferred to the charging port and charging and discharging the formed compacted cake into the charging port.

[Function 1 (1) The charging method of the present invention is performed as described above, and the charging coal supplied from the coal tank is divided into a plurality of pieces on the coal loading car into a size that can pass through the charging port of the carbonization chamber. By forming the compacted cake in advance and conveying it to the charging port one after another,
Since the amount of coal that can be charged into a single charging port is divided and charged, there is no need for the dividing process used in conventional methods, and stable charging is possible regardless of changes in cake strength due to weather. It is what is done.

(2) The charging device of the present invention is supplied as described above, and the charged coal passes through the charging port of the carbonization chamber in the plurality of coal receiving cases and is preformed into a plurality of compacted cakes having a size of 1q. A plurality of coal receiving cases each holding a consolidated cake are sequentially transferred to the charging port by a coal receiving case feeding means, and these compacted cakes are sequentially opened from the plurality of coal receiving cases by a cake opening means and transferred to the charging port. Extrusion means and pressure to extrude the compacted cake compared to conventional equipment because it is charged! There is no need for a dividing means to divide the cake and guide it to the charging port, and even cakes with low bulk density can be processed.

[Example] An example of a charging device for carrying out the method of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Fig. 7, the coal tank 1 has a branched coal tank outlet 2.2 at its lower part, and a coal feeding device 3 and a charging device 4 for charging coal follow these, respectively. , the above coal tank outlet 2.2
Since the devices subsequent to both are exactly the same, only one will be described as shown.

The coal feeding device 3 includes a rotary feeder 5 having a predetermined axial length provided at the lower end of the coal tank outlet 2, and a coal receiving case 6 (to be described later) provided below in the axial direction of the rotary feeder 5 as shown in FIG. The coal is supplied from the same number of coal feeding chutes 7 as the number of coal feeding chutes.

A charging device 4 for charging coal is arranged below the coal feeding device 3, and a charging port 10 formed in the ceiling wall 9 of the carbonization chamber 8 from the coal tank 1 is provided.
It is placed on a coal charging car 12 that transports charged coal 11 upward.

As shown in FIGS. 1, 2, and 3, on the coal loading car 12 there is a rail for moving along the axial direction of the rotary feeder 5 on a rail 39 provided on the ceiling wall 9 of the coking chamber 8. A plurality of coal receiving cases 6 for receiving charged coal 11 from the coal feeding chute 7 of the coal feeding device 3 are provided on a coal loading car 12 having wheels 14 and facing in the axial direction of the rotary feeder 5. . These coal receiving cases 6 are formed of a cylindrical body whose diameter is gradually expanded downward. Further, these coal receiving cases 6 are provided in an appropriate number for each charging port 10 to divide and handle the amount of charged coal that each charging port 10 has. A plurality of coal-receiving cases 6 each having divided charging coal m are formed in a size suitable for forming a compacted cake 16 large enough to pass through the charging port 10 of the carbonization chamber 8. ing. A plurality of coal receiving cases 6 each having a divided amount of charged coal in each charging port 1o are integrally connected by connecting members 17 and 18.

A row of coal receiving cases 6 connected to each other have a charging port formed along the direction of the ceiling wall 9 of the carbonization chamber 8, which is perpendicular to the axial direction of the rotary feeder 5. There are as many columns as there are 10 (usually 4 to 5 times 1). 1 to 5 show one of these rows.

Further, each of these coal receiving cases 6 is provided with a bottom plate 19, which can be opened and closed by a shaft 21 inserted through a bracket 20 fixed to the lower end of the coal receiving case 6.

This bottom plate 19 is equipped with a lever member 22, a push rod 23, and a roller 24. A roller 24 provided on one bottom plate is configured to move on a rail 25 provided on the coal loading car 12 along the axial direction of the rotary feeder 5, and when the roller 24 comes off the rail 25, One of the bottom plates is designed to open due to its own weight when the machine is folded. The push rod 23 is rotated counterclockwise by a drive device (not shown) to close the bottom plate 19 via the lever member 22. Charging coal 1 supplied from the coal tank 1 to these rows of coal receiving cases 6
Consolidation means 13 for consolidating 1 as a consolidation cake 16
is located. The consolidation means 13 are provided in the same number as the coal receiving cases 6 in the - row, and are connected to a vibrator 28 suspended from a lobe 27 that is let out from a drum 26 attached to the side wall of the coal tank 1. It consists of a vibrating rod 29 inserted into the coal receiving case 6. A connecting member 17.1 that integrally connects the plurality of coal receiving cases 6 in a row.
8 is supported by guide rollers 30 arranged on a frame 15 on the coal loading car 12, and the coal receiving cases 6 in the negative row are movable in the running direction of the coal loading car 12 with respect to the frame 15. The coal receiving cases 6 in the - row are provided with coal receiving case feeding means 31 to move them as described above. This coal receiving case feeding means 31 includes a drive device 32 fixed to the frame 15, and a drive device 3 that is fixed to the frame 15.
2, and a rack 34 provided on the connecting member 18 that engages with the pinion gear 33, and is configured to move each coal receiving case 6 onto the charging port 10. There is. In addition, the coal loading car 12
The charging port 1 is connected to the upper frame portion of the frame 15 directly above the opening 35 formed at the bottom of the coal receiving case by the coal receiving case feeding means 31.
A cake opening means 36 is provided for opening the compacted cake 16 formed by the compaction means 13 from the coal receiving case 6 transferred onto the coal receiving case 6 and charging the compacted cake 16 into the charging port 10.

This cake opening means 36 consists of a cylinder 37 suspended from the upper frame portion of the frame 15, and a push plate 38 connected to the cylinder 37, and is provided with only a negative base.

When the bottom plate 19 of the coal receiving case 6 is opened, the cylinder 37' of the cake opening means 36 is expanded, so that the compacted cake 16 is pushed out from the coal receiving case 6 by the pushing plate 38 1711tIi.

Next, a method of charging coal into a coke oven using the charging apparatus for charging coal supplied as described above will be described.

Charging coal 11 in coal tank 1 (usually powdered coal, 0.5t in terms of bulk density)
/771') is cut out from the coal tank outlet 2 by the rotary feeder 5 of the coal feeding device 3. Cut-out charging coal 1
1 is provided on the coal loading car 12 through the coal feeding chute 7 branched in the axial direction of the rotary feeder 5.
The coal is supplied into the coal receiving cases 6 of each row. Prior to supplying the charging coal 11 to these coal receiving cases 6, the vibrating rod 29 of the consolidation means 13 is inserted into each coal receiving case 6, and the vibrating rod 28 is driven to start one movement. I'll keep it. Thereafter, the charged coal 11 supplied into the coal receiving case 6 is pressurized by the vibration of the vibrating rod 29, and as the charged coal 11 is supplied, the vibrating rod 29
By raising the amount, the charged coal 11 becomes a compacted cake 16 (
It is molded with a bulk density of 0.7 to 1.1 t/m3. In this way, the charging coal 11 is charged in the coal receiving case 6 and then vibrated by the vibrating rod 29 for pressure forming. This is because most of the forming force is consumed by the frictional force between the charged coal 11 and the coal receiving case 6 due to the high charging height, making it difficult to form the compacted cake 16. Further, by gradually pressurizing and forming the charged coal 1 while supplying it, the time required to complete forming the compacted cake 16 can be shortened.

Pressure inside all coal receiving cases 6 in these rows! When the forming of the cake 16 is completed, the coal loading car 12 is moved to the rail 39.
The coal charging car 1 is placed directly above the charging port 10 of the carbonization chamber 8.
position the opening 35 formed at the bottom of 2. Next, as shown in FIGS. 4 and 5, the coal receiving case feeding means 31 moves the - row of coal receiving cases 6 in the direction of arrow A, and one of them is placed directly above the charging port 10. , and located directly below the cake opening means 36.

At this time, the rollers 24 provided on the bottom plate 19 of the coal receiving cases 6 rotate on the rails 25 as the coal receiving cases 6 are moved in a row by the coal receiving case feeding means 31.
5 is formed only up to just before the charging port 10,
The rollers 24 have come off the rails 25 and the bottom plate 19 has opened due to its own weight. Then, the cake opening means 3
6 is extended into the coal receiving case 6, and the upper surface of the compacted cake 16 is pushed out by the push plate 38, so that the compacted cake 16 avoids passing through the opening 35 and falls into the carbonization chamber 8 from the charging port 10. Charge. The reason why the coal receiving case 6 is formed into a cylindrical body whose diameter is gradually enlarged downward is that it is possible to extrude the consolidated cake 16 even if the expansion stroke and output of the cylinder 37 is small. This is to make it possible. Consolidated cake 1 in first coal receiving case 6
After the charging into the charging port 10 of 6 is completed, the coal receiving case feeding means 3
1 moves one row of coal receiving cases 6 and inserts it into the charging port 10 in order to charge the compacted cake 16 in the second coal receiving case 6.
Position it directly above. In this way, all of the rows of coal receiving cases 6 in which the compacted cake 16 has been formed in advance are sequentially charged. The total amount of consolidated cake 16 in these rows of coal receiving cases 6 is the amount of charged coal that each charging port 10 has. After charging is completed for all coal receiving cases 6, the push rod 23 is rotated counterclockwise by a drive shaft (not shown), and all the bottom plates 19 of the coal receiving cases 6 in a row are rotated via the lever member 22. Close. After the bottom plate 19 is closed, a row of coal receiving cases 6 is moved by the coal receiving case feeding means 31.
move in the direction of arrow B. At this time, the rollers 24 provided on each bottom plate 19 are all positioned on the rails 25 and run. Thereafter, the push rod 23 is returned to its original position by rotating the drive device clockwise, and the coal loading car 12 is moved on the rails 39 to be positioned below the coal tank 1. This is to prepare for charging in the next process.

By using the charging coal charging method and apparatus described above, the charging coal 11 that is dropped and charged into the carbonization chamber 8 is not a powdered charging coal with a small bulk density, but a consolidated cake 16 with a high bulk density.
It falls onto the floor of the carbonization chamber 8 in a column-shaped mass formed as a cylinder. The consolidated cake 16 that collides with the floor collapses and accumulates in a mountain shape, but as the next consolidated cake 16 falls on top of it and collides with it, the charged coal 11 is compacted one after another by the collision energy, increasing the bulk. Upper bound the density. In this way, each consolidated cake 16 is charged, and by falling and colliding with each other, each charging port 10 is filled with the amount of charged coal 11 that can be received at a high bulk density.

In addition, by adjusting the bulk density of each compacted cake 16 during molding, the uneven filling bulk density that conventionally occurred in the height direction within the carbonization chamber 8 can be eliminated, and a uniform filling height can be achieved. The density of charged coal 11 can also be 1q.

Furthermore, since each consolidated cake 16 is supported by a bottom plate 19 in the coal receiving case 6 and transported to just above the loading inlet 10, the consolidated cake 16 collapses before charging as in the conventional case. There is no risk at all.

Furthermore, the coal tank 1 can be used without using the consolidation means 13.
Consolidated cake 16 is formed in the coal receiving case 6 due to natural fall from the coal receiving case 6.
It is also possible to mold it and charge it into a tube. In this case as well, since the charged coal 11 falls with a large mass as a columnar lump of the compacted cake 16 rather than as a powdered charged coal, the above-mentioned tamping effect occurs, and the charging coal is simply powdered coal. It is possible to increase the filling bulk density compared to .

In addition, in this case, it is possible to easily do this by applying a slight vibration to the shape of the coal receiving case 6, without having to extend the cylinder 37 of the key opening means 36 to push out the compaction key 16. Can be opened and loaded.

The charging coal 11 may be not only ordinary powdered coal but also a mixture of briquettes.

The above-mentioned compacted cake 16 can be formed by using only the moisture contained in the charged coal 11, but if necessary, a binder other than water (oil, pitch, etc.) may be added to the charged coal 11 for forming. Also good.

In the embodiment of the charging coal charging device described above, a vibrating type with an excitation of 1!28 was used as the compaction means 13, but a dropping type using a weight or the like was adopted. Also good.

Further, the consolidation means 13 may be provided on the coal loading car 12 by attaching a vibrator directly to the bottom plate 19 or the like.

Further, in the present embodiment, the coal receiving case 6 is formed to have a cylindrical body that gradually expands downward, but the present invention is not limited to this. Any shape suitable for the possible size may be used.

Furthermore, in this embodiment, the cake opening means 36
was supplied by an extrusion method having a cylinder 37 and a pushing plate 38, but by forming the above-mentioned coal receiving case 6 by dividing it into two in the axial direction, and opening this by dividing it when charging the compacted cake 16. The consolidated cake 16 in the coal receiving case 6 may be allowed to fall.

[Effects of the Invention 1 In summary, the present invention provides the following advantages.

(1) According to the method of the present invention, charging coal supplied from a coal tank on a coal loading car is formed into a plurality of compacted cakes to a size that can pass through the charging port of a carbonization chamber, and is sequentially conveyed to the charging port. This eliminates the need for a step of dividing the compacted cake compared to the conventional method, and stable charging can be carried out continuously even if the cake strength varies due to the temperature.

(2) According to the apparatus of the present invention, a coal loading car is provided with a plurality of coal receiving cases for passing the charged coal through the charging port of the carbonization chamber and forming it into a compacted cake of a size of 1q, and these coal receiving cases being connected to the charging port. The device is equipped with a means for feeding the coal receiving cases and a cake opening means for opening the coal receiving cases and sequentially charging a plurality of compacted cakes into the charging port. There is no need for an extrusion means without extrusion and a dividing means for dividing the compacted cake and guiding it to the charging port, and even a cake with a low bulk density can be processed, so it is highly versatile.

[Brief explanation of the drawing]

Fig. 1 is a supply diagram showing an example of the coal charging device of the present invention at a coal receiving position under the coal tank, and Fig. 2 is a supply diagram showing an example of the coal charging device of the present invention at a coal receiving position under the coal tank, and Fig.
FIG. 3 is a side view of the charging device at the charging position on the charging port, FIG. 4 is a view taken along the IV-rV line in FIG. 3, and FIG. 5 is a view as shown in FIG. FIG. 6 is a side sectional view of a coal loading car that supplies a conventional charging device, and FIG. 7 is a view taken along the line v--vi in FIG. 6. In the figure, 1 is a coal tank, 4 is a charging device, 6 is a coal receiving case, 8 is a carbonization chamber, 10 is a charging port, 11 is a charging coal, 12 is a coal loading car,
13 is a consolidation means, 16 is a consolidation cake, 31 is a coal receiving case feeding means, and 36 is a cake opening means. Patent Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Kinutani Figure 2 Figure 4 Figure 6 Figure 7

Claims (3)

[Claims] (1) When charging coal from a coal tank into a carbonization chamber using a coal loading car, the coal supplied from the coal tank is compacted into a compacted cake on the coal loading car to a size that allows it to pass through the charging port of the carbonization chamber. A method of charging coal in a coke oven, characterized in that a plurality of compacted cakes are molded into a plurality of cakes, and then the plurality of compacted cakes are sequentially conveyed from a coal loading car to the charging port and charged. (2) A plurality of coal receiving cases provided on the coal charging car and forming the charged coal supplied from the coal tank into a compacted cake to a size that can pass through the charging port of the carbonization chamber, and compaction forming. a coal receiving case transporting means for sequentially moving a plurality of coal receiving cases each having a molded cake to the charging port, and releasing a compacted cake formed from the plurality of coal receiving cases sequentially transferred to the charging port A charging device for charging coal in a coke oven, comprising a cake opening means for charging into the charging port. (3) The charging device for charging coal in a coke oven according to claim 2, wherein the coal receiving case has a consolidation means for compacting the charging coal supplied from the coal tank.