JP5023577B2 - 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.

  In order to solve the above-mentioned problems, the present inventors have conducted intensive studies. As a result, in the coke extrusion apparatus shown in FIGS. 4 and 5, a vibration exciter is attached to the rear end of the ram rod, In contrast to the connection to the ram head's vibration part, if the vibration machine is placed close to the ram head's vibration part, it is thought that a collision with the ram drive unit or the like cannot occur. It was.

  Based on the above idea, 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. At least a part of the pressing surface is a vibration unit that can vibrate, and a vibration exciter for vibrating the vibration unit is provided close to the rear of the vibration unit. Coke extrusion device.

[2] The vibrator is coke pusher machine according compressed air to the characterized and Turkey by vibrating the vibration unit in the power source [1].

[3] The vibrator includes a hammer body having an air cylinder chamber, the piston and the air supply to reciprocate said piston back and forth by supplying compressed air to said air cylinder chambers which are arranged in a room the air cylinder [2] characterized in that it is an air hammer comprising means and a hammer portion that protrudes forward and is held at the front end portion of the hammer body and that is struck by the reciprocating motion of the piston and moves forward and backward. Coke extrusion device as described.

  [4] The coke pushing apparatus according to [3], wherein the hammer body is built in a ram head.

  [5] The coke pushing device according to [3] or [4], wherein the hammer portion is connected to the vibration portion.

  [6] When the ram head is not pressed against the coke block, the hammer moves to a position where the piston is not struck by the urging force of the spring, and when the ram head is pressed against the coke block, The coke pushing device according to any one of [3] to [5], wherein the hammer portion moves to a position where it is struck by a piston by a reaction force.

  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.

  FIG. 1 is a side view for explaining a coke extrusion apparatus 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.

  And in this coke extrusion apparatus 11, the pressing surface of the ram head 22 pressed against the coke lump 2 in the carbonization chamber 1 is divided into three pressing surfaces in the vertical direction, and the intermediate pressing in the pressing surface. The surface 22b serves as a vibration part (vibration plate), and an air hammer 30 as a vibration exciter for vibrating the vibration plate 22b is disposed close to the rear surface of the vibration plate 22b.

  Incidentally, an air hammer is used as a device for performing a predetermined work (for example, a work for peeling a coating on a wall surface or a work for crushing a rock) by hitting a work object. The piston arranged in the room is reciprocated back and forth with compressed air, and the hammer part (also called a bit) protruding and held in front of the hammer body is struck by the reciprocating motion of the piston so as to move forward and backward. It has become.

  A state in which such an air hammer 30 is disposed in the coke pushing device 11 will be described in detail with reference to FIGS. 2 is a partial detailed view of FIG. 1, and FIG. 3 is a partial detailed view of FIG.

  As shown in FIGS. 2 and 3, the air hammer 30 includes a hammer main body 31 having an air cylinder chamber 32, a piston 33 disposed in the air cylinder chamber 32, and compressed air supplied to the air cylinder chamber 33. Compressed air supply pipe 37 that reciprocates 33 back and forth, and a hammer portion 34 that protrudes forward and is held at the front end portion of the hammer body 31 and strikes the rear end by the reciprocating motion of the piston 33 and moves forward and backward. ing.

  Here, the tip of the hammer portion 34 is connected to the rear surface of the vibration plate 22b, and the hammer portion 34 and the vibration plate 22b are integrated to reciprocate back and forth.

  As shown in FIG. 2, the hammer body 31 is installed in the ram head 22 by being surrounded by a cooling enclosure 40, and a compressed air supply pipe 37 that supplies compressed air to the air cylinder chamber 32 of the hammer body 31. A cooling air supply pipe 41 for supplying cooling air to the cooling enclosure 40 is laid inside the ram rod 21 having a hollow box structure. The cooling air may be shared with the compressed air.

  Further, here, as shown in FIG. 3, a spring 35 for urging the hammer portion 34 forward is attached to the hammer main body 31, and as shown in FIG. When it is not pressed against, the hammer portion 34 is moved to a position where it is not hit by the piston 33 by the urging force of the spring 35, and the ram head 22 is pressed against the coke block as shown in FIG. 3 (b). At this time, the hammer portion 34 is moved to a position where the piston 33 is struck by the reaction force P from the coke block.

  This avoids unnecessary vibration of the vibration plate 22b. The spring 35 may be attached between the hammer body 31 and the vibration plate 22b.

  In the coke pushing apparatus 11 configured as described above, the ram head 22 is pressed against the coke lump 2 in the carbonization chamber 1, and the vibration plate 22 b is vibrated in the pushing direction by the air hammer 30 to vibrate the coke lump 2. In addition, by advancing the ram head 22, the friction between the coke lump 2 and the carbonization chamber furnace wall changes from static friction to dynamic friction, and the friction coefficient decreases, thereby reducing the extrusion load.

  In addition, since the hammer body 31 of the air hammer 30 is built in the ram head 22 and the compressed air supply pipe 37 and the cooling air supply pipe 41 are laid inside the ram rod 21, the air hammer 30 can be There is no collision with the guide roller 27 and the carbonization chamber 1.

  In the above-described embodiment, a part of the pressing surface of the ram head 22 is a vibration unit (vibration plate), but the entire pressing surface of the ram head 22 is a vibration unit (vibration plate). Needless to say.

It is a side view of the coke extrusion apparatus concerning one embodiment of the present invention. It is the elements on larger scale of FIG. FIG. 3 is a partially enlarged view of FIG. 2. 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 30 Air hammer 31 Hammer body 32 Air cylinder chamber 33 Piston 34 Hammer portion 35 Spring 37 Compressed air supply piping 40 Cooling enclosure 41 Cooling air supply piping 51 Linear Ram rod type coke extrusion device 52 Bending ram rod type coke extrusion device

Claims (6)

  A coke extrusion device that pushes a coke lump against the coke lump in the coking chamber of the coke oven and pushes the coke lump out of the carbonization chamber while applying vibration to the coke lump. A coke extrusion apparatus characterized in that at least a part of the vibration is a vibration unit that can vibrate, and a vibration exciter for vibrating the vibration unit is provided close to the rear of the vibration unit. . The vibrator is coke pusher machine according compressed air to claim 1, wherein the benzalkonium by vibrating the vibration unit in the power source. The vibrator includes a hammer body having an air cylinder chamber, a piston disposed in the room the air cylinder, and air supply means for reciprocating back and forth the piston by supplying compressed air to the air cylinder chamber, 3. The coke extrusion device according to claim 2, wherein the hammer is an air hammer provided with a hammer portion that protrudes forward and is held at a front end portion of the hammer body, and is hammered by a reciprocating motion of the piston and moves forward and backward. apparatus.   4. The coke pushing apparatus according to claim 3, wherein the hammer body is built in a ram head.   The coke extrusion device according to claim 3 or 4, wherein the hammer part is connected to the vibration part.   When the ram head is not pressed against the coke block, the hammer moves to a position where the piston is not hit by the biasing force of the spring.When the ram head is pressed against the coke block, the reaction force from the coke block The coke pushing apparatus according to any one of claims 3 to 5, wherein the hammer portion moves to a position where it is struck by a piston.

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