JPS59122581A - Method of molding and transferring compressed coal blocks and apparatus therefor - Google Patents

Abstract

PURPOSE:Continuously compressed blocks of the starting coal are molded in a level state and continuously pushed out into the conveying cases at a level and sent to the coke furnace with the carts, thus increasing their safety to cracking and disintegration. CONSTITUTION:Continuously compressed blocks 3 of the starting coal 15 is molded with the molding machine 10 in a level state and continuously pushed out. The molded coal is cut with the cutter 17 into blocks measuring the prescribed dimensions or cut in the molding machine and the resultant blocks 4 of molded coal 4 are contained in the case 16 in the level state. Then, the cases 16 are piled up on the cart 20 and sent to the coke furnace chambers 1a, 1b. The case 16 preferably contains an integrally molded coal block measuring the dimensions corresponding to a chamber 1 of the coke furnace.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for forming and transporting a compression molded coal block for a coke oven by compression molding of coking coal applied to a room furnace type coke oven, and a method for charging all compressed coal blocks in one piece or in pieces. and regarding its equipment.

In recent years, in the development of coke ovens, efforts have been made to increase the density of coking coal charged into coke ovens in order to improve productivity and produce high-strength coke by increasing the amount charged. The biggest challenge is to reduce the ratio of high-quality coking coal (caking coal) that is blended to obtain coal, and to expand the use of coal types such as thermal coal (non-caking coal).

One method of charging compacted coal blocks for coke ovens, which is an effective method for these purposes, is disclosed in Japanese Patent Application Laid-Open No. 5.3.
The stamping molding charging method proposed in No. 25602 is representative. In this forming method, raw coal is charged into a compacting mold (mold), and then an appropriate number of compactors are allowed to fall freely with a compactor foot provided at the tip of the compactor to compress the coking coal. , to make briquette blocks for coke ovens.

Among the coke ovens to which this stamping charging method is applied, those currently in practical use are relatively small, with a furnace chamber height of about 4 to 5 meters. Therefore, it is difficult to apply it to large coke ovens with a furnace chamber height of 6 to 7 m, which is the mainstream at present, due to the basic functional limitations of the stamping charging method. In other words, the compression density of coking coal is limited and uniform high-strength compaction cannot be expected, so collapse is likely to occur during charging in large coke ovens.

In addition, since both the forming machine and the charging machine are installed on a traveling trolley, even if the equipment is relatively small and has been put into practical use, there are layout constraints and major modifications are required to apply it to existing furnaces. . Furthermore, in order to increase the molding strength and capacity of a large coke oven, the equipment becomes extremely heavy, and it has not been put to practical use due to weight and layout constraints.

A method other than this charging method using stamping molding has been proposed, namely, a method in which a compressed coal block is molded in one piece or into several parts, and then the blocks are stacked and charged all at once. However, there are basically concerns about block strength and moldability, and in order to be moldable and obtain sufficient strength, the entire block must be large and heavy, similar to the stamping charging method. In addition, when blocks are molded separately, complicated handling of block stacking is required, and in order to obtain block strength that can withstand such handling, high compression molding is required.Furthermore, pretreatment such as binder mixing is required. At present, it is not sufficient to compensate for the shortcomings of the stamping charging method, such as requiring equipment and causing problems in terms of profitability.

By the way, the method proposed in Japanese Patent Application No. 56-56986 is to leave compressed briquette coal that has already been compression-molded in the opening of the mold, and to add a new piece of charcoal to the mold. The subsequent compression-molded coal obtained by compression-molding the input raw material coal is combined to give a bulk density of 1.0 wet tons/rt.
There is a method of continuously manufacturing an endless compacted coal block by sequentially repeating this process by creating a compacted coal block of r or more.

The basic concept of the coke oven block charging method to which this continuous compacting method of compacted coal blocks is applied is as shown in FIG. Briefly, the width W and the height H are continuously extruded from the stationary molding machine 2 placed on the side of the coke oven 1.
The upright continuous compression molded coal block 3 is shaped into a molded coal of a size suitable for the charging dimensions into the coke oven chambers 1a, 1b, etc. shown in FIG. It is cut into blocks 4 and stored upright in a transport case 5.

This transport case 5 is loaded onto a charging machine trolley 7 via a transfer stand 6, and is made to travel back and forth on rails 8 laid in parallel to the coke oven 1, and the briquette block 4 is transferred to the coke oven 1.
A block charging machine 9 is used to charge the blocks into each of the furnace chambers 1a, 1b, .

According to this method, the objectives and current problems not mentioned at the beginning are basically solved for the following reasons.

(a) Since the molding machine is an independent stationary type, it can be installed in open space around the coke oven, making it easy to apply to existing equipment.

In addition, there is no generation of vibration, noise, or dust, but even if conditions are such that pollution may occur, it can be supplemented with sufficient anti-pollution equipment because it is a stationary type.

(b) Since the molding machine is a simple and reliable molding method, the block strength can be freely adjusted to the required strength and uniformity for the purpose of block handling, charging, etc., making it adaptable to molding. is excellent.

(c) Since the charging machine is a traveling trolley type dedicated charging equipment,
It is extremely compact, with dimensions and weight equal to or less than existing extruders, so there are no restrictions on placement.

Therefore, it is extremely easy to apply to existing reactors.

However, in such a forming and conveying method, the narrow surface 4A (
(see FIG. 2) supports the weight of the briquette charcoal block 4, so its surface pressure is large (there is still a risk of collapse during extrusion and transportation).

The present invention further solves the above-mentioned problems regarding the block charging method having the above-mentioned excellent basic characteristics, and
The purpose of the application to newly installed coke ovens is to achieve high-efficiency compaction of continuous compression molded coal blocks in the continuous molded block charging method and to ensure safe handling of the molded coal blocks until they are charged into the furnace chamber. Needless to say, the present invention particularly provides a method and apparatus for forming and transporting a compression-molded coal block for a coke oven, which makes it possible to retrofit existing coke ovens.

The feature is that a continuous compression molded coal block of raw coal for coke is molded in a flat state and continuously extruded, stored in a flat state in a transport case, and this transport case is loaded. This is a method of forming and transporting compacted coal blocks that are loaded in a flat state on a machine and transported to a desired coke oven chamber.In addition, it is a forming and transporting method in which compressed compacted coal blocks that are placed in a flat state are continuously formed. a transfer stand that transfers a conveyance case that stores the continuously compressed compacted coal blocks in a flat state between the molding machine and the charging machine, and conveys this conveyance case to a desired coke oven room. In addition, the present invention provides a forming and transporting apparatus for compression-molded coal blocks, which is equipped with a charging machine unit having a raising and lowering means for uprighting the transport case.

Hereinafter, the present invention will be explained in detail based on examples thereof.

The integral molded coal block 4 charged into the furnace chamber is in an upright position, and its dimensions are as shown in FIG.
Width W1 Height H1 Length L conforms to the dimensions of b... However, as shown in FIG.
It is carried out in a flat state with H as the width and L dimension direction as the continuous molding extrusion direction. That is, the molding machine 10 is installed so that the surface 4B of the maximum area formed by the height H and length of the entrance surface of the briquette 4 is the upper and lower surface.

In FIGS. 4(a) and 4(b), the molding machine 10 is composed of a raw coal input hopper 11, a mold 12, a press hydraulic cylinder 13, and a press head 14, and raw coal 15 is charged from the input hopper 11. Then, the raw coal 15 is compressed and molded in the direction of arrow A in a flat state with a height W and a width H by the press head 14, and becomes a continuous compression molded coal block 3. and,
The continuous compression molded coal block 3 is pushed out and loaded onto the transport case 16. In this embodiment, a cutting machine 17 for cutting into length-long briquette coal blocks 4 is placed immediately after the forming machine 10, but the cutting machine 17 is configured in the forming machine mold, and the length is cut in advance. A block of briquette charcoal having a fixed size may be cut into pieces and extruded.

In the transport case 16, the briquette block 4 has a height W and a width H1.
It has a flat surface plate 18 on which it is placed in a horizontal state, and the relay table 1 is
9 and loaded on the loading machine with a loading rate of 20. In addition,
A suitable number of rollers are rotatably attached to one end of the conveyance case 16, and as described later, the coke oven chambers 1a, lb.
- The briquette charcoal block 4 that has been transported to the front is stood upright together with this transport case 16, and the bottom plate 22 that supports the narrow area (WXL) that becomes the lower surface when the briquette block 4 is charged into the furnace chamber is slid. This allows it to be inserted together with the bottom plate 22. The charging machine platform type 20 runs on rails 23 laid parallel to the coke oven 1, and the furnace door opening/closing machine 24, driver's cab 25, block charging machine 26, and transport case 16 are erected as shown in FIG. The undulating means 27 shown in FIG.

According to the embodiment having such a configuration, the briquette charcoal block 4 can be formed and transported in the following manner.

In FIGS. 4(a) and 4(b), first, the molding machine 10 molds a continuously compressed molded coal block 3 of raw coal 15 for coke in a flat state, and continuously transports this into a conveyor case on a transfer table 19. Extrude to 16. When the cutting machine 17 cuts the continuous compression molded coal block 3 into molded coal blocks 4 of a predetermined length, the molded coal blocks 4 are placed flat in the transport case 1.
It is stored in 6. This conveyance case 16 is moved in the direction of arrow B on the traverse rollers on the upper surface of the relay table 19 by means of a pusher (not shown) or the like with the briquette block 4 placed flat.
It is loaded onto the loading machine table mold 20.

It goes without saying that the transport case 16 can be moved not only by rollers but also by providing wheels or the like on the lower surface.

This charging machine base mold 20 moves the flat conveyance case 16 in the direction of arrow C along the rails 23 to a desired furnace chamber, and the briquette block 4 is moved to the conveyance case 16 by the undulating means 27 described later. The molded coal block 4 is placed in the furnace chamber, for example, 1b, together with the bottom plate 22 by the block charging machine 26.
Charge to.

The empty transport case 16 is laid flat again and moved toward the relay table 19 by the loading machine table mold 20. Then, the charging machine table mold 2o is moved in the direction of the arrow by rollers (not shown) and loaded onto the relay table 19, where it is moved in the directions of the arrows E and F via transverse and vertical rollers. , returns to the position to receive the briquette block 4 from the molten machine 10.

According to such an operation, a large-sized furnace suitable for the furnace chambers 1a, 1b, etc., for example, width W = 0.4 m, height H = 6.5 rri.
, a continuous compression molded coal block 3, which becomes a molded coal block 4 with a length L = 15 m, is processed by a molding machine 10 into a molded coal block 4 with a width H-6.5 m,
It can be molded with a height W of 0.4 m. At this time, since compression is performed using the smallest cross section (WXH) of the continuous compression molded coal block 3, not only can the molding machine be made smaller, but also the continuous compression molded coal block 3 can be extruded from the molding machine 10 in a flat state. Therefore, since the dead weight per unit area acting on the bottom surface of the briquette coal block 4 is the minimum at the forming height W = 0.4 m, there is no fear of collapse due to its own weight, and the briquette coal block is placed on a flat surface plate. The friction surface pressure per unit area that occurs when the surface is exposed to the surface is also minimized. Therefore, the safety against collapse due to wear is extremely high, and the compressive force required for forming the block can be kept to a minimum.

FIG. 5 shows a different embodiment, which differs from the previous embodiment in that the briquette charcoal block 4 is segmented and extruded in the longitudinal direction, which is the L dimension direction.

For example, as shown in the figure, two molding machines 10, IOA and IOB, are installed for separately molding the molded coal blocks 4, and the transport case 16, which receives the continuous compression molded coal blocks 3 from the molding machines 10A and IOB, is initially at the solid line position. After the continuous compression molded coal block 3 is cut, it is moved in the direction of arrow G to the position indicated by the two-dot chain line by a pusher or roller (not shown), and the next molded coal block is received in the air combat section.

Like this for the coke oven manager!゛For example, 4
The transport case 16 containing the divided briquette blocks 4a to 4d is placed horizontally at the arrow J as in the previous embodiment.
The charging machine table mold 2 is moved in the direction indicated by the arrow on the relay table 19 using buttons or rollers (not shown), and then moved in the direction indicated by the arrow.
0 is loaded.

In such segmented molding, the number of segments is 4 as described above.
Then, the compressed cross section of the molding machine 10A shown in FIG. 6(a) has a height of W and a width of L/4, as shown in FIG. 6(b). In this case, the raw coal compression area of the molding machine 1OA is WX
L/4, continuous extrusion length is H flat molding extrusion.

Then, two molding machines 10A and IOB are used for continuous molding and extrusion.
By repeating this process twice, compression molding for one furnace chamber, that is, for one gate can be performed. In addition, one molding machine 10 may be installed and the number of times of molding may be set to four, or three or more molding machines may be installed to reduce the number of times of molding of each molding machine. When a plurality of them are installed, there is an advantage that the molding time can be shortened.

According to the above-described split molding, the compressed cross section of the molding machine 10A has a height W = 0.4 m and a width L / 4 = 15/4.
= 3.75m, which is W- in the case of the first embodiment.
〇, 4 m, H=6.5 m Since the compressed cross section is smaller than in the case of 4 m, the molding machine 10 can be made smaller.

In addition, in order to make the compressed cross-sectional area smaller than WXH of the first embodiment, if the number of divisions is n, then L / n
It is sufficient to select n such that <H.

By the way, with this split molding, the number of presses will increase, but the amount of work required for molding is basically expressed as "forming press cross section" x "number of presses", so operating costs will not increase. . Further, the extrusion distance of the transport case 16 on the flat surface plate 18 is L = 1 in the first embodiment.
5m versus 6.5m, the extrusion surface pressure perpendicular to the extrusion plane that the briquette charcoal block 4 extruded from the molding machine 10 receives can be reduced to 6°5/15=0.43, or 43%. The possibility of cracking and collapse of the briquette charcoal block 4 due to surface pressure can be further reduced.

FIG. 7 shows a part of a further different embodiment, and is a sectional view corresponding to the section taken along the line III--III in FIG. 5 of the above-mentioned embodiment. The configuration of the molding machine 10 is the same as that of the two embodiments described above, but the molding machine 10 and the flat surface plate 18 of the transport case I6 are arranged with their tips facing downward with respect to the extrusion direction of the continuous compression molded coal block 3. The difference is that it is tilted. The relay table 19 includes a chain conveyor 28 for horizontally carrying out the transport case 16 and an appropriate number of vertically moving rollers 29 and 30.
and its lifting device 31,32 are installed.

In the two embodiments described above, the briquette block 4 was placed horizontally, but in this embodiment, the molten coal block 4 was placed horizontally.
and a flat surface plate 18 with an inclination to the extent that the briquette block 4 in the transport case 1G does not slide out due to its own weight.
It depends on the material, but if smooth rust-free steel is used,
Capable of flat tilt molding extrusion and conveyance set within about 14 degrees.

According to this embodiment, the pushing force against the frictional resistance generated on the sliding surface of the bottom of the briquette block 4 is significantly reduced compared to the above-mentioned horizontal pushing, so cracks and collapse of the briquette block 4 can be prevented. This can be further avoided.

In other words, although sufficient safety can be obtained in the case of horizontal flat conveyance as described above, when conveying at the charging machine ratio of 20 as shown in FIG. Therefore, the rocking of the briquette charcoal block 4 in the transport case 16 can be further restrained, and the occurrence of cracks during transport can be completely prevented.

FIG. 8 is a detailed view of an example of the charging machine unit ratio 20 used in all of the above-described embodiments, showing a state close to the relay stand 19. This charging machine unit ratio 20 includes, for example, a wire rope 33, a wheel 34, and a drive body 35 for standing the transport case 16 upright.
, a transport case 16 connected to the tip of a wire rope 33
A support case 36, a fixed body 37 rotatably attached to the support case 36, and a rotation cylinder 38 for the undulating means 27 are provided. Furthermore, the transport case 16
Support plate 39 for the briquette block inside, bottom lift body 40 when the transport case 16 is upright. The vertical loading roller 41 of the m-feeding case 16, its lifting device 42, and the driver's cab 43
etc. are mounted and installed, and moving wheels 44 are provided at the bottom of the charging machine platform 20.

According to such a charging machine ratio 20, after the transport case 16 which is in an inclined flat state is held by the fixed body 37 by the cylinder 38 in the support case 36, it is connected to the wire rope 33 using the shaft 45 as a fulcrum. The briquette block 4 is made to stand upright as shown by the two-dot chain line using the wheel 34 and the drive body 35, and the briquette block 4 is charged into the coke oven chamber. At this time, each coke oven chamber 1
Since a, 1b, etc. have a slight height at the bottom, the transport case 1 is
6 is raised together with the support case 36 by the bottom lift body 40, and the level is adjusted.

Then, the briquette block 4 is charged into the coke oven chamber from the transport case 16 by the charging machine 26 . After the charging is completed, the empty transport case 16 is returned to the flat state by the above-mentioned raising and lowering means 27, and the charging machine 20 travels in the direction of arrow N and stops adjacent to the transfer table 19. Finally, the charging machine rate is 20
The upper empty transport case 16 is moved in the direction of arrow Q by the unloading chain conveyor 46 and loaded onto the relay table 19.

Although FIG. 8 describes the case of loading the conveyance case 16 in a tilted flat state, it is possible to load the conveyance case 16 in a horizontally flat state or to undulate it in the same way. Needless to say.

As explained in detail above, the present invention involves molding a continuously compressed coal block of raw coal for coke in a flat state and continuously extruding it, storing it in a flat state in a transport case, and transporting it. A method for loading cases in a flat state on a loading machine and transporting them to a desired coke oven chamber, and a molding machine for continuously forming compression molded coal blocks in a flat state;
A transfer stand that transfers a transport case that stores continuous compression molded coal blocks in a flat state between the molding machine and the charging machine, and a transport case that transports the transport case to a desired coke oven chamber. Since the charging machine is equipped with a charging machine having a levitation means for standing upright, it is extremely easy to form continuous compression molded coal blocks with high efficiency and handle the molded coal blocks until they are charged into the furnace chamber. The safety against cracking and collapse of the briquette coal blocks inside can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a device that forms and conveys briquette blocks in an upright state, which is the prior art of the present invention, Fig. 2 is a perspective view of charging the briquette blocks in an upright state into a furnace chamber, and Fig. 3 is a A perspective view of a briquette block extruded from a flat molding machine employed in the present invention, FIG. (a) is a sectional view taken along line nn, FIG. 5 is a plan view of a different embodiment, and FIG. 6 (a)
6(b) is a perspective view of a briquette coal block when the briquette coal block is divided into pieces and transported, and FIG. FIG. 8 is a cross-sectional view showing a corresponding inclined flat forming and extrusion, and is an example of a charging machine ratio with undulating means. 1a, ■b-coke oven chamber, 3-continuous compression briquette block, 4.4a, 4b-briquette block, 10, IOA,
10B-forming machine, 15-raw coal, 16-transport case, 1
7-Cutting machine, 18-Relay stand, 20-Charging machine unit ratio, 27-
Raising means patent applicant: Kawasaki Heavy Industries, Ltd. (1 idiot)
゛Agent Patent attorney Katsutoshi Yoshimura (and 1 other person) Figure 1, page 1 continued 0 Inventor Rikiya Yoshikawa Kawasaki Heavy Industries, Ltd. Kobe Factory, 3-1-1 Higashiyosaki-cho, Chuo-ku, Kobe 0 Inventor Shigeru Kuwashima 3-3-5-1 Akitsu, Narashino City 0 Inventor Noboru Ishihara 1049-18 Hoshikukicho, Chiba City 0 Applicant Kawatetsu Kagaku Co., Ltd. 1 Kawasakicho, Chiba City

Claims (5)

[Claims] (1) Continuous compression of raw coal for coke Molding a briquette coal block in a flat state and extruding it continuously, cutting it into predetermined dimensions or cutting the briquette coal block into pieces in advance in a molding machine in a flat state. A method for forming and transporting a compression molded coal block, which comprises storing the block in a transport case, loading the transport case in a flat state on a loading machine, and transporting it to a desired coke oven chamber. (2) Forming and transporting a compacted coal block according to claim 1, wherein the transport case houses an integral molded coal block having a size equivalent to one coke oven chamber. Method. (3) Molding of compacted coal blocks according to claim 1, characterized in that the conveyance case stores an appropriate number of compacted coal blocks for one coke oven chamber. Transportation method. (4) The compacted coal block according to claim 2 or 3, wherein the compacted coal block in the flat state is inclined to such an extent that it does not slide under its own weight during compaction and transportation. molding and conveying method. (5) A molding machine that forms raw coal for coke into a continuous compression molded coal block in a flat state and continuously extrudes it, and a cutting machine that cuts this continuous compression molded coal block into molded coal blocks of predetermined dimensions. , or a dividing machine that divides the coal in advance in the forming machine, a transport case that stores the briquette blocks in a flat state, and a transfer case between the molding machine and the charging machine platform while the transport case is in a flat state. and a charging machine loading means for loading the transport case in a flat state and transporting it to a desired coke oven chamber, as well as a lifting means for standing the transport case upright. Forming and conveying device for forming coal blocks.