JP4977866B2 - Coke extrusion equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a coke extrusion apparatus for extruding generated coke from a carbonization chamber in a coke oven, and in particular, reducing the extrusion load, reducing damage to the furnace wall (side wall) of the carbonization chamber, and The present invention relates to a coke extrusion device capable of extending the life. In the present invention, unless otherwise specified, the coke oven refers to a chamber type coke oven. The chamber furnace type coke oven has a heat storage chamber at the lower portion of the furnace body, and combustion chambers and carbonization chambers are alternately arranged at the upper portion thereof.

  In the coke oven, when coke (coke lump) produced by carbonizing coal in the carbonization chamber is extruded from the carbonization chamber using an extrusion device, the coke is clogged in the carbonization chamber, resulting in an increase in the extrusion load. As a result, a large force acts on the furnace wall of the carbonization chamber, and the furnace wall may be damaged. When the clogging is severe, the furnace wall is destroyed, or it cannot be pushed out by the extrusion device, and the furnace temperature is lowered, and then the coke is scraped out manually. For this reason, there are problems such as an increase in the repair cost of the furnace wall and a reduction in the production amount due to the shutdown of the furnace.

  On the other hand, the following has been proposed as a technique for reducing the extrusion load and preventing damage to the furnace wall.

  For example, when repairing the bottom brick in the carbonization chamber of the coke oven, the dry powder coke is placed in the carbonization chamber, and the dry powder coke fills the recesses on the surface of the bottom brick and flattens it. A method for reducing the friction between the lump and the furnace bottom has been proposed (see, for example, Patent Document 1).

Further, prior to charging the raw coal to the carbonization chamber, the particulate refractory material (5mm or less) (such as graphite or Si ₃ N ₄₎ leave spread the beveled furnace bottom, lump coke and the oven during coke extrusion A technique has also been proposed in which friction between the bottoms is reduced, and as a result, furnace wall damage is prevented (see, for example, Patent Document 2).

  Patent Document 3 discloses a device for carrying out coke by vibrating a horizontal shovel up and down to collapse coke in the carbonization chamber into a bucket.

In the [Problems to be Solved by the Invention] column, the unpublished prior application of the present applicant will be described, and the application number is described here. That is, Japanese Patent Application No. 2005-377312 (Unpublished Application 1).
JP 59-187082 A JP-A-8-120278 Soviet Union Patent No. 981340

  However, the techniques described in Patent Documents 1 and 2 do not lead to a sufficient push load reduction.

  That is, both of the techniques described in Patent Documents 1 and 2 are intended to reduce the frictional force between the coke lump and the carbonization chamber furnace bottom. The main cause of the increase is not the frictional force between the coke mass and the bottom of the coking chamber, but when the coke mass is extruded using an extrusion device, the coke mass pushed by the ram head of the extrusion device is deformed and collapsed. This is because the frictional force between the coke lump and the carbonization chamber furnace wall is increased by spreading in the horizontal direction perpendicular to the extrusion direction.

  In addition, the technique described in Patent Document 3 does not use the extrusion device targeted by the present application, vibrates the horizontal shovel attached to the bucket up and down, collapses the coke in the carbonization chamber into the bucket, The coke in the furnace is scooped out many times with a bucket, and it takes much time to carry out the coke compared to a coke oven using an extrusion device.

  Therefore, in order to solve the above-mentioned problem, in the non-published application 1, the applicant reduced the extrusion load accurately by applying vibration to the coke mass in the carbonization chamber, thereby reducing the furnace of the carbonization chamber. The coke extrusion method and the coke extrusion apparatus which can reduce the damage of a wall are proposed.

  FIG. 4 is a side view showing an example of a coke extrusion device proposed in the non-published application 1, and FIG. 5 is a perspective view of the coke extrusion device.

  4 and 5, reference numeral 15 denotes a coke extrusion device shown as an example in the non-published application 1, and includes an extrusion ram 20 including a ram rod 21 and a ram head 22, and an extrusion ram driving device (not shown). At the same time, the pressing surface of the ram head 22 pressed against the coke lump 2 in the carbonizing chamber 1 has three pressing surfaces of an upper pressing surface 22a, an intermediate pressing surface 22b, and a lower pressing surface 22c in the vertical direction. A vibration exciter (vibration motor or hydraulic vibration exciter) 28 for vibrating the intermediate pressing surface (vibration plate) 22b in the pushing direction through the vibration rod 29 is provided. It is attached to the ram rod 21.

  Then, using the coke pushing device 15 configured as described above, the vibrator 28 shakes the intermediate pressing surface (vibrating plate) 22b in the pushing direction to impart vibration to the coke lump 2. By moving the ram head 22 forward, the friction between the coke lump 2 and the furnace wall of the carbonization chamber 1 changes from static friction to dynamic friction, and the coefficient of friction decreases, thereby reducing the extrusion load. As a result, damage to the furnace wall can be suppressed.

  However, in the coke extrusion apparatus shown in FIG. 4 and FIG. 5, if the shaker 28 enters the carbonization chamber 1 in a high temperature state, the coke extrusion device may be damaged by heat, Considering the fact that the width is as narrow as about 400 mm, the vibration exciter 28 is attached to a portion that does not enter the carbonization chamber 1 behind the ram rod 21 so that vibration is transmitted to the vibration plate 22 b via the vibration rod 29. However, when it is applied to a commonly used coke extrusion apparatus, there are the following problems.

  First, the structure of a commonly used coke extrusion apparatus will be described below.

  There are two types of coke extrusion devices generally used as shown in FIGS. 6 and 7, and the coke extrusion device 51 shown in FIG. 6 is a method in which the ram rod 21 is in a straight line from the beginning. In addition, the coke pushing device 52 shown in FIG. 7 is a method in which the rear end of the ram rod 21 is bent and the bent portion 21b falls in the horizontal direction and is aligned with the horizontal portion 21a as the ram rod 21 advances. Incidentally, the structure using the straight ram rod shown in FIG. 6 is simpler in structure, but the method using the bent ram rod shown in FIG. 7 is mainstream because it requires less installation space.

  In any type of coke extrusion devices 51 and 52, as shown in FIGS. 6 and 7, the ram 20 is attached to the entire upper surface of the ram rod 21 and the ram head 22 attached to the tip of the ram rod 21. And a ram driving device 24 is installed in the vicinity of the rear of the ram head 22 so as to straddle the ram rod 21, and the rack 23 on the upper surface of the ram rod 21 and the rack by the pinion 24a of the ram driving device 24. The ram 20 is pushed into the carbonization chamber 1 by a pinion type drive mechanism. 6 and 7 is a ram shoe attached to the ram rod 21 to move together to support the ram 20, and 27 is a guide roller for supporting and guiding the ram rod 21 passing therethrough. .

  Therefore, when the coke pushing device shown in FIGS. 4 and 5 is applied to the coke pushing devices 51 and 52 as described above, the vibrator 28 is moved to the ram driving device 24 as the ram 20 advances. Or it may collide with the furnace wall of the carbonization chamber 1 and there is a possibility that the extrusion operation is interrupted or the equipment is damaged. In order to avoid this, the ram rod 21 may be lengthened and the vibration exciter 28 may be attached at a position where the ram rod 21 does not collide with the ram driving device 24 until the extrusion is finished. Moreover, since the bending ram rod type coke pushing device 52 cannot attach the vibration exciter 28 to the bending portion 21b, the distance between the ram driving device 24 and the vibration exciter 28 must be reduced accordingly. Therefore, in order to attach the vibration exciter 28 to a position where it does not collide with the ram driving device 24 or the like, it is necessary to make the horizontal portion 21a of the ram rod 21 longer, and the bending ram rod method is adopted in the first place. This is due to restrictions on the installation space and the like, and it is difficult to lengthen the ram rod 21.

  As shown in FIGS. 4 and 5, when the vibration exciter 28 is attached to the lower surface of the ram rod 21, the vibration exciter 28 and the guide roller 27 may collide. It will be necessary to change the method. For example, the guide roller in the range in which the vibration exciter 28 moves is changed to a ram shoe type that moves together with the ram rod 21, or the guide roller is not arranged in that range.

  The present invention has been made in view of such circumstances, and when the ram head at the tip of the ram is pressed against the coke mass in the carbonization chamber of the coke oven and the coke mass is pushed out of the carbonization chamber, vibration is applied to the coke mass. Coke extrusion device having an appropriate structure capable of avoiding collision between a vibration exciter for applying vibration to the coke mass and a ram drive device for driving the ram, etc. Is intended to provide.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that the vibrator is removed from the ram before the collision with the drive device in order to avoid the collision between the shaker and the ram drive device. It came to the idea that it should be possible to separate. By the way, the pushing load is usually maximized until the ram head advances to the center of the carbonization chamber, so that the coke mass is vibrated until the shaker reaches the ram drive. This is because the pushing load can be effectively reduced. However, in that case, the structure in which the vibration is transmitted from the vibration exciter to the vibration plate of the ram rod via the vibration rod as shown in FIG. 4 and FIG. 5 is complicated. I decided to vibrate the whole thing.

  Based on the above concept, the present invention has the following features.

  [1] A coke extrusion device capable of pushing a coke lump against a coke lump in a carbonization chamber of a coke oven and pushing the coke lump out of the carbonization chamber while applying vibration to the coke lump. A coke extrusion device characterized in that the coke mass is vibrated by connecting the machine to the ram and vibrating the entire ram, and the connection between the vibrator and the ram can be released.

  [2] The vibration exciter is connected to the ram until the ram advances to a predetermined position, and when the ram advances to a predetermined position, the connection with the ram is released. The coke extrusion apparatus according to [1] above, wherein

  [3] The coke extrusion according to [1] or [2], wherein a rack is attached to the vibration exciter, and the entire ram is vibrated by meshing with the rack attached to the ram rod. apparatus.

  [4] The coke extrusion device according to any one of [1] to [3], further including a fixing unit that fixes the vibration exciter to the ram rod.

  [5] The coke pushing apparatus according to [4], wherein the fixing means uses an electromagnet.

  [6] A coke extrusion device capable of pushing a ram head at a ram tip against a coke lump in a carbonization chamber of a coke oven to push out the coke lump from the carbonization chamber while applying vibration to the coke lump. A coke extrusion device characterized in that a ram drive mechanism for pushing into a carbonization chamber is installed below the ram rod, and a vibration is applied to the coke mass by connecting a vibration exciter to the ram to vibrate the entire ram.

  The coke mass referred to in the present invention refers to the entire coke in the carbonization chamber, and does not mean only the block-shaped coke mass in which the cokes are fixed. Coke cracks in the cooling process, but in the extrusion process, the cokes can come into close contact with each other and transmit vibrations to the entire coke, so there is no need for the block to have coke fixed.

  A coke extrusion apparatus of the present invention is a coke extrusion apparatus that can push a ram head against a coke lump in a carbonization chamber and apply vibration to the coke lump, and includes a vibration exciter and a ram for applying vibration to the coke lump. Because it has an appropriate structure that can avoid a collision with a ram drive device or the like for driving the vehicle, it is possible to reduce the extrusion load accurately while preventing interruption of the extrusion operation and damage to the equipment. . As a result, damage to the furnace wall can be suppressed, operation delay due to clogging can be avoided, and productivity can be increased.

  An embodiment of the present invention will be described with reference to the drawings. Here, a case where the present invention is applied to a bent ram rod type coke extrusion device will be described, but the same applies to a case where it is applied to a linear ram rod type coke extrusion device.

  1 and 2 are side views for explaining a coke extrusion device according to an embodiment of the present invention.

  As shown in FIG. 1, the coke extrusion device 11 according to this embodiment includes a ram 20 having a ram rod 21, a ram head 22 attached to the tip of the ram rod 21, and a ram rod 21, as shown in FIG. 7. A ram driving device 24 is installed in the vicinity of the rear of the ram head 22 so as to straddle the ram rod 21, and the rack 23 on the upper surface of the ram rod 21 and the ram driving device 24 are connected to each other. The ram 20 is pushed into the carbonization chamber 1 by a rack-pinion type drive mechanism by the pinion 24a. 1 is a ram shoe that is attached to the ram rod 21 and moves together to support the ram 20, and 27 is a guide roller for supporting and guiding the ram rod 21 that passes therethrough.

  In the coke pushing device 11, a vibration exciter (vibrating motor or hydraulic vibration exciter) 28 is disposed above the rear end of the ram rod horizontal portion 21a. A rack 30 is attached to the lower surface of the shaker 28, an electromagnet 29 is attached to the side of the shaker 28, and an elevating mechanism (not shown) for raising and lowering the shaker 28. It has.

  Accordingly, as shown in FIG. 2, the shaker 28 is lowered as appropriate, and the rack 30 on the lower surface of the shaker 28 and the rack 23 on the upper surface of the ram rod 21 are engaged to connect the shaker 28 and the ram 20. At the same time, after the shaker 28 is fixed to the upper surface of the ram rod 21 by the electromagnet 29, the shaker 28 is operated to vibrate the entire ram 20 in the pushing direction.

  If necessary, the electromagnet 29 is turned off and the vibration exciter 28 is raised, so that the connection between the vibration exciter 28 and the ram 20 can be easily released and the vibration exciter 28 can be disconnected from the ram 20. it can.

  Therefore, when the vibration exciter 28 fixed to the upper surface of the ram rod 21 approaches the ram driving device 24 as the ram 20 advances, the vibration exciter 28 is lifted to separate the vibration exciter 28 from the ram 20. Thus, it is possible to easily avoid the vibration exciter 28 from colliding with the ram driving device 24.

  Further, since the vibration exciter 28 is positioned above or above the ram rod 21, it does not collide with the guide roller 27 that supports and guides the ram rod 21 from below.

  A procedure (operation state) in the case where the coke lump 2 is pushed out from the carbonization chamber 1 using the coke pushing apparatus 11 configured as described above will be described with reference to FIG.

  (1) First, as shown in FIG. 3A, the shaker 28 is lowered, and the rack 30 on the lower surface of the shaker 28 and the rack 23 on the upper surface of the ram rod 21 are engaged with each other. Are connected.

  (2) Next, as shown in FIG. 3 (b), the ram head 22 is pressed against the coke lump 2 in the carbonization chamber 1, and the entire ram 20 is vibrated in the pushing direction by the shaker 28, thereby coke lump 2. While applying vibration to the ram head 22, the ram head 22 is advanced. Thereby, the friction between the coke lump 2 and the coking chamber furnace wall changes from static friction to dynamic friction, and the friction coefficient decreases, thereby reducing the extrusion load. As the ram 20 advances, the bent portion 21b of the ram rod 21 also becomes horizontal and is aligned with the horizontal portion 21b.

  (3) Then, as shown in FIG. 3 (c), when the shaker 28 approaches the ram driving device 24, the shaker 28 is raised to release the connection between the shaker 28 and the ram 20. The vibrator 28 is separated from the ram 20. This ends the application of vibration to the coke block 2 at this point. By the way, normally, the pushing load is maximized until the ram head 22 moves forward to the center of the carbonizing chamber 1, so that the coke mass is increased until the shaker 28 reaches the ram driving device 24. By applying vibration to the extrusion load, the pushing load can be effectively reduced.

  (4) Thereafter, the ram head 22 continues to advance, and when the coke lump 2 is advanced to the position where all of the coke lump 2 is extruded from the carbonization chamber 1, the extrusion ends there.

  In the above description, the vibration exciter 28 is connected to the ram 20 from the start of extrusion. However, in some cases, the vibration generator 28 may be connected from the middle of extrusion as appropriate, instead of being connected at the start of extrusion.

  As described above, the coke extrusion device 11 according to this embodiment is a coke extrusion device capable of pressing the ram head 22 against the coke mass 2 in the carbonization chamber 1 and extruding the coke mass 2 while applying vibration. The exciter 28 can be easily separated from the ram 20, thereby avoiding the collision between the exciter 28 and the ram driving device 24, etc. Extrusion load can be reduced accurately while preventing equipment damage. As a result, damage to the carbonization chamber furnace wall can be suppressed, operation delay due to clogging can be avoided, and productivity can be increased.

  In addition, since the vibration exciter 28 can be separated from the ram 20, maintenance such as repair is easy, and utility communication such as power wiring to the vibration exciter 28 is separated from the ram 20, which is advantageous.

  In this embodiment, the ram drive device 24 is installed so as to straddle the ram rod 21. However, if the ram drive device 24 is installed below the ram rod 21, the coke lump 2 is kept for a longer period of time. Vibration can be applied.

  That is, if the rack 23 on the upper surface of the ram rod 21 is left as it is and a new rack is attached to the lower surface of the ram rod 21 and the ram driving device 24 is installed below the ram rod 21, it is connected to the upper surface of the ram rod 21. The vibrator 28 can move forward to the vicinity of the carbonization chamber 1 without colliding with the ram driving device 24, and the coke lump 2 can be vibrated for a longer period.

  Furthermore, if a new rack is attached to the lower surface of the ram rod 21, the ram driving device 24 is installed below the ram rod 21, and the vibration exciter 28 is attached to a portion of the upper surface of the ram rod 21 that does not enter the carbonization chamber, Since the shaker 28 does not collide with the ram drive unit 24 and the carbonization chamber 1 furnace wall, it is not necessary to separate the shaker 28 and the ram 20 and vibration can be applied to the coke lump 2 until the extrusion is completed. It becomes possible.

It is a side view of the coke extrusion apparatus concerning one embodiment of the present invention. It is a side view of the coke extrusion apparatus concerning one embodiment of the present invention. It is a figure which shows the operating condition of the coke extrusion apparatus which concerns on one Embodiment of this invention. It is a side view of the coke extrusion apparatus shown as an example in Japanese Patent Application No. 2005-377312. It is a perspective view of the coke extrusion apparatus shown as an example in Japanese Patent Application No. 2005-377312. It is explanatory drawing of the coke extrusion apparatus of a linear ram rod system. It is explanatory drawing of the coke extrusion apparatus of a bending ram rod system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coking oven carbonization chamber 2 Coke lump 11 Coke extrusion device 15 Coke extrusion device 20 Ram 21 Ram rod 21a Ram rod horizontal portion 21b Ram rod bent portion 22 Ram head 22a Upper pressing surface 22b Intermediate pressing surface (vibration plate)
22c Lower pressing surface 23 Rack 24 Ram drive device 24a Pinion 26 Ram shoe 27 Guide roller 28 Exciter 29 Electromagnet 30 Rack 51 Linear ram rod type coke extrusion device 52 Bent ram rod type coke extrusion device

Claims (6)

  This is a coke extrusion device that can push a coke lump with vibration while pushing the ram head at the ram tip against the coke lump in the carbonization chamber of the coke oven. A coke extrusion device characterized in that the coke lump is vibrated by being connected to the ram and vibrating the entire ram, and the connection between the vibrator and the ram can be released.   The vibration exciter is connected to the ram until the ram advances to a predetermined position, and when the ram advances to a predetermined position, the vibration exciter is disconnected from the ram. The coke extrusion apparatus according to claim 1, wherein   The coke pushing device according to claim 1 or 2, wherein a rack is attached to the vibration exciter, and the entire ram is vibrated by meshing with a rack attached to the ram rod.   The coke extrusion apparatus according to any one of claims 1 to 3, further comprising fixing means for fixing the vibration exciter to the ram rod.   The coke pushing device according to claim 4, wherein the fixing means uses an electromagnet.   A coke extrusion device that can push a coke lump against the coke lump in the carbonization chamber of the coke oven and push the coke lump out of the carbonization chamber while applying vibration to the coke lump. A coke extrusion device characterized in that a ram drive mechanism for pushing is installed below the ram rod, and a vibration is applied to the coke mass by connecting a vibration exciter to the ram and vibrating the entire ram.

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