JPS5889686A - Coal cake thrusting device and method of compressing coking coal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention comprises a tamping bar of the type which operates in parallel and has a tamping foot approximately corresponding to the width of the cake and a common drive member for lifting the tamping bar. The present invention relates to a compacting device for producing a coal cake charged into a coke oven and a method for compacting a coke cake.

Coking coals with good coking properties are mined only in few deposits, whereas coking coals with poor coking properties are used in large quantities. Such coals are preconditioned with partial addition of deviscosity or bitumen and by thorough compaction and are subsequently coked in a conventional horizontal chamber coke oven.

It is known to use mechanical tamping tools for compaction, with which the cake is pre-prepared in a tamping mold and then introduced as a whole into the furnace chamber and coked there. Ru. The so-called tamping technology has been gradually improved, and today it is already possible to pre-prepare a cake in less than 4 minutes, and in the case of parentheses 1. A tamping compaction degree of It/yj or more can be obtained.

In this case, as mentioned above, only a tamping machine with a tamping hammer is used, which tamping hammer consists of a tamping rod, the lower end of which is formed with a tamping foot. The tamping rod is lifted by the lifting disk and released after reaching a predetermined height, so that the tamping rod compresses the cake sufficiently by the falling energy during its descent. The degree of compaction achieved is also the degree for the stability of the 7-cake during cake charging, and the degree 4, □, , /6 ° A, 4 ° □, A for the quality of the coke produced. −=2
．． . It consists of four falling hammers which move up and down over the partial length of the cake and compress the introduced coal mixture into layers. However, known tamping devices have the disadvantage that the operation of such devices is noisy, requires relatively high energy and is susceptible to interference. Furthermore, high wear is caused by the use of lifting discs which must be pressed against the tamping rods with sufficient pressure to ensure reliable lifting.

The object of the present invention is to provide a tamping device with high productivity, with the same or higher specific gravity and with a uniform degree of compaction throughout the cake.

In order to solve this problem, the invention provides that the tamping rod is loaded via a vibrating device or is part of a vibrating device.

Such a vibrating device makes it possible to reliably compact the cake within a few seconds without having to lift the tamping rod several times. On the contrary, the tamping rod is pressed onto the coal with sufficient pressure and the vibrating device is then activated. After the vibration, the vibrating device is lifted up and placed on the new layer, in which case the tamping device itself can conventionally be carried out with only a partial length of the tamping mold. Particularly advantageously, in this manner and by precisely adjusting the vibrating device, a completely homogeneous and uniformly compacted coal cake is produced in each case, so that the coal cake forms a homogeneous coke. It is turned into coke.

By driving the vibrating device electrically, pneumatically or hydraulically, sufficient energy is input in each case, which can be used in the coke factory.

In order that the tamping rod does not have to be raised completely each time after the interruption of the compaction process, and in order to thereby further increase the hourly output, the plates of the tamping foot are divided according to the invention. are formed, and these portions are closed downwardly and expanded horizontally. This makes it possible to lift the vibrating device only slightly after the vibration period has been interrupted, so that the section of the tamping foot closes downwards and the passage is freed for the new bulk material. In this case, it is only necessary to lift the tamping foot or tamping rod by a small amount in each case.

In order to homogenize the vibration transmission, it is advantageous if the vibrating device is arranged at the end of the tamping rod in the region of the tamping foot. In this case, the vibrating device can also be encapsulated so that the working output of the vibrating device is not impaired or prematurely spoiled by coal that subsequently falls on top during filling. By arranging the vibrating device at the lower end of the tamping rod, the tamping rod itself is at the same time significantly less loaded or less heavily loaded by vibrations.

In the case of a compacting device with a hydraulically operated vibrating device, the compacting rod is preferably designed to be extendable and retractable and is connected to a pressure medium pump that can be switched in a pulsating manner. In this case, the tamping rod is simultaneously loaded in a pulsating manner during its descent, so that the vibrations are transmitted to the coal cake in an advantageous manner. At the same time, by applying a corresponding pressure instantaneously, it is ensured that the tamped walls are not heavily loaded.

A plurality of individually driven motors are provided according to the invention. When the tamping rods are installed to work parallel to each other and to act on the tamping rods that weigh the tamping feet, such as vibrating devices,
Relatively small units can be grouped into constituent units.

In this case, the vibrating devices act in parallel but independently of each other, so that they can be operated synchronously or also asynchronously. Collectively, for example, in a component unit of four tamping rods and a vibrating device, such a tamping device can be operated like a conventional tamping device, in which case the individual component units are of the tamping type. By working with only a portion of the material, the respective filling is alternately replenished and compacted in each case.

In accordance with the invention, the plate of the tamping foot is divided and constructed so that it can be opened and closed, so that the plate of the tamping foot has a length that is equal to the inner width of the tamping mold in order to completely equalize the compaction. It is constructed in proportion to the number of times. As a result, the respective filling after being received is compacted simultaneously and evenly without having to operate over a relatively long length of the compacting die of the compacting device. In some cases it may be advantageous to arrange the plate itself longitudinally movably under the tamping foot.

Furthermore, it is advantageous for the tamping foot section to be designed to be closable, so that according to the invention the free side edges of the plate can be connected to the tamping rod by means of lubricants that are locked in the upper and lower end positions. is combined with

This ensures in a simple manner, for example by coupling a vibration device, etc., that the tamping foot is closed downwards each time the tamping rod is operated. Then, during the downward movement of the tamping rod, the part of the plate of the tamping foot is again forced back into the horizontal movement and is locked there, so that the required pressure is applied in an oscillatory manner with sufficient and local pressure. Coal compaction occurs during the period.

You can get some degree of adjustment for the density of the cake by the shaking time. According to the invention, therefore, the vibration device is designed to be controllable in time and/or in a drive manner. Depending on the desired compaction or predetermined coal mixture, the vibration duration or vibration intensity of the vibrator is varied and controlled. This provides a tamping device that can be easily adapted and varied, which is preferably adapted to the conditions imposed from the outside in each case, and which in this case can reduce the energy demand by utilizing the natural frequencies. is reduced.

Accumulation on the tamping foot is prevented in a simple manner in that the tamping foot has a tilting device extending from above downwards or a slowly rotating dispensing unit. The tamped foot is in each case provided that it can be closed.
Since it is closed downwards, the tilting device or other distribution unit does not interfere with the process and eliminates any accumulation on the tamping foot and thus the formation of undesirable nests or the like.

The method for monthly compaction of coke proceeds in such a way that the coal mixture is introduced alternately each time and then finally compacted. It is now clear that the tamping device is also advantageously suitable for continuous processes. Such a continuous method is seen according to the invention as fresh coal is continuously fed during the compression of the coal mixture.

In this case, the coal in each case passes through the gap between the tamping foot and the tamping mold, especially in the case of a tamping foot with a tilting device or a distribution unit. In this case, the tamping foot is lifted only slightly with a steady rhythm, without vibration interruption, so that a continuous compaction with a continuous supply of coal takes place.

In particular, this is possible if, with the arrangement of the invention, coal is fed continuously in small quantities and as a sparse, smooth delivery stream.

Furthermore, the invention is advantageous in that with the tamping device according to the invention, machines or furnaces can be filled in a short time, since the coal cake is produced quickly. Furthermore, each coal cake is 1.4t/T.
I? This ultimately leads to a significant improvement in coke. Furthermore, it is advantageous that the service life of the tamping device is increased since no rubbing parts need to be replaced. With respect to the vibration device or the vibrations generated by it, the entire tamping device is adjusted in such a way that it is not or only slightly stressed by these vibrations. In this case, the improvement in coke quality is achieved both by the high specific gravity and by the homogeneity of the coal cake throughout. Furthermore, the feeding and compression of the coal preferably takes place continuously, which facilitates the production of a homogeneous coal cake. Both the high specific gravity and the excellent uniformity throughout the coal cake are independent of whether moist coal or preheated coal is added (achieved). Coal is also achieved to the same degree with respect to specific gravity and evenness of the coal cake.

The invention will be explained below with reference to the exemplary embodiments shown.

FIG. 1 shows a plurality of tamping tools 1, which consist of tamping bars 2, 3.4 and tamping feet 5. In the case of the central hardening tool,
Tamping foot releaser A-1 with divided plate 6
1 and a hinge 11'. In this case, the levers 11 are connected to the vibration device 10 and to respective parts of the plate 6.

The vibrating devices 10, 12.13 assigned to the respective tamping rods 2, 3.4 are correspondingly switched over and moved individually as the switching proves necessary and advantageous.

In the case of the tamping device shown in FIG. 2, two tamping rods 2, 3 are connected to each other by a plate 6, ie a tamping foot.

Such a tamping foot should have a length corresponding to the partial length of the tamping mold and a width corresponding approximately to the internal dimensions of the tamping mold.

3 and 4 show the vibrating device 10 attached to the tamping rod 2 and the part 7.8 serving as tamping foot 5.
1 shows a tamping tool 1 with a plate 6 consisting of. On the end side of part 7.8, A-11 is hinged, which are connected to vibrating device 10. In the case of a fixed vibrating device, when the tamping rod 2 is raised, the respective parts of the tamping foot are closed downwards via the renos 11, as shown in FIG. When the tamping rod is lowered, section 7.
8 are arranged horizontally and form a continuous plate 6.

In this case both parts 7, 8 are pivoted about the hinge point 9.

In FIG. 5, the tamping mold 15 is shown empty on the left. The tamping device itself is lifted upwards and the section 7.8 of the tamping foot 5 is closed downwards. This position is indicated by 20.

The first coal seam is metered and poured into a tamping mold.

This position is indicated by 21.

After reaching a predetermined coal seam, the tamping rod 2 is lowered, thereby spreading the tamping foot 5 and placing the plate 6 on the coal seam. The vibrating device 10 is then started and driven electrically, pneumatically or hydraulically. In this way, the raised coal seam is compressed in a few seconds to achieve a predetermined thickness or a predetermined specific gravity. Such positions are designated by 22 or 23, with the uncompacted coal seam being designated by 16 and the compacted coal seam by 16'.

After compaction - i.e. after reaching position 23, the tamping bar is lifted again, at the same time the tamping foot 5 is closed downwards and frees the passage for the new bulk material, i.e. coal (position 24). ). A new bulk is transferred to the tamping foot 5, which leaves a passage for the new coal mixture, and then the tamping rod 2 is lowered and the tamping foot 5 is extended, so that a new tamping process begins. (position 25).

Such a process is sufficient for tamping cakes.

It is often repeated until a height of approximately 4-6 m) is achieved. The vibrator 10, 12, 13 then reaches an upper position until the cake is pushed into the coke chamber. The whole process is repeated for each separate furnace charge.

Moreover, due to the special design of the tamping foot with the tilting device or distribution unit, the coal can be formed continuously and the compaction process can also be formed continuously.

[Brief explanation of the drawing]

1 is a schematic representation of a tamping device with a plurality of tamping tools each having a tamping foot; FIG. 2 is a schematic representation of a tamping device with successive tamping feet; FIG. 3 is an expanded view FIG. 4 is a schematic diagram of the tamping tool according to FIG. 3 with plates closed at the bottom; FIG. 5 is a schematic diagram showing the process of producing a coal cake; FIG. . 1... tamping tool, 2, 3.4... tamping rod,
5...Tamping foot part, 6...Plate, 7.8...
・Part, c4-... Hinge point, 10... Vibration/vibration device,
11...Lever, 11'...Hinge, 12.13.
...Vibration device, 15...Tamp type, 16, 16'
...Coal seam, 20°21.22, 23, 24.25...
・Position FIG, 3 FfG, 4 IG5

Claims (1)

[Claims] l. A tamping device for producing a coal cake to be charged into a coke oven, comprising a tamping bar operating in parallel and having a tamping foot approximately corresponding to the width of the cake. and a common drive member for lifting the tamping rods (2, 3, 4);
A device for tamping coal cakes, characterized in that the material is loaded via a vibrating device (10) or is part of a vibrating device. 2. The plate (6) of the tamping foot (5) is divided into parts, and furthermore, the divided parts (7, 8) are closed downward and stopped in a horizontal state. Apparatus described in section. 3. Device according to claim 1, characterized in that the shaking device (10) is arranged at the end of the tamping rod (2, 3, 4) in the area of the tamping foot (5). 4. Device according to claim 1, characterized in that the tamping rods (2, 3, 4) are connected to a pressure medium pump which is designed to be telescopic and can be switched in a pulsating manner. 5. Individual driven vibratory devices (1o. 12.13) operating parallel to each other and acting on the tamping rods (2,3° 4) with tamping feet (5). A device as claimed in claim 1 in which it is provided. 6. Device according to claim 2, in which the thickness of the plate (6) of the tamping foot (5) is designed to correspond to several times the internal width of the tamping die (15). 7. The free side of the plate (6) is connected to the tamping rods (2, 3, 4) via lockable grooves (11) in the upper and lower end positions. Range 2nd
Apparatus described in section. 8. Claim 1, wherein the vibration device (10, 12, 13) is configured to be temporally and/or drive controllable
Apparatus described in section. 9. Apparatus according to claim 1, characterized in that the tamping foot (5) has a tilting device extending outwardly from above or a rotating distribution unit.10. 11. A method for compacting coke coal before bringing it to the coal mixture, characterized in that during the compression of the coal mixture, it is continuously charged with fresh coal. 11. 11. The method of claim 10, wherein the method is fed continuously as a sparsely flowing delivery stream.