JP5994602B2 - Coke oven scraping jig, coke scraping device, and coke scraping method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a technique for discharging clogged coke from a carbonization chamber of a coke oven in which coke clogging has occurred.

  In the case of a chamber-type coke oven, the coal charged in the carbonization chamber is dry-distilled by the heat from the combustion chamber, thereby generating gas and tar, and the residue becomes coke. And when dry distillation is completed, the furnace lids on both sides of the carbonization chamber are released, the extrusion ram of the coke extruder is inserted into the carbonization chamber from one kiln, and the extrusion ram is advanced, so that the coke is carbonized in the carbonization chamber. To discharge from. The discharged coke is received in a coke bucket and cooled to become product coke.

  Here, when unevenness that inhibits the forward movement of coke occurs on the wall surface of the carbonization chamber due to carbon adhesion or the like, coke clogging occurs in the carbonization chamber and it becomes difficult to extrude coke with an extrusion ram. In this case, in order to be able to use the carbonization chamber again, it is necessary to take out the clogged coke from the carbonization chamber where coke clogging has occurred, and then it is desirable to eliminate the unevenness generated on the wall surface of the carbonization chamber. Here, when the work of scraping the coke from the coking chamber where coke clogging has occurred is carried out manually, a lot of labor and time are required.

As a conventional technique for solving such a problem, there is a technique as described in Patent Document 1.
In other words, when coke clogging occurred in the carbonization chamber, a scoop-shaped receiver with an open front was attached to the tip of the extrusion ram, and the receiver was allowed to enter the carbonization chamber, and the clogged coke was received by the receiver. Later, the coke is discharged to the extruder side by retracting the extrusion ram.

  The receiver described in Patent Document 1 includes a back plate attached to the extrusion ram, a pair of side plates, and a bottom plate disposed on the bottom surface between the pair of side plates. The bottom plate is composed of a frame having a thickness of about 5 mm to about 20 mm. And according to description of patent document 1, the coke received by the front and the receiver is hooked on the front side of the frame part which comprises a bottom plate, and it drags on the front and the bottom of the carbonization chamber which acts as a temporary bottom of the receiver. The coke is discharged to the lower part on the extruder side of the carbonization chamber, and the coke freely falls from the front and the bottom of the receiver toward the lower bucket.

JP-A-9-59643

  In the receiver described in Patent Document 1, if the thickness of the frame constituting the bottom plate is as thin as 20 mm or less, the coke cannot be caught reliably, and the effect of scraping out coke is small. In addition, the number of advance and retreat of the receiver for scraping increases accordingly. Since the above-mentioned coke is red hot coke and has a high temperature, the heat load on the receiver increases, and accordingly, the strength of the receiver needs to be designed to be high. For this reason, we want to minimize the advance and retreat of the receiver for scraping in one carbonization chamber. Also, from the viewpoint of work efficiency, we want to increase the amount of coke scraped by one advance and retreat.

Here, in the said patent document 1, since it is an idea which comprises a baseplate with a frame, even if it makes the said frame only the frame part of the front side, there is no idea of making the said frame part higher than about 20 mm. . In the receiver of Patent Document 1, it is assumed that the greater the thickness of the frame, the more difficult it is for the receiver to enter into the clogged coke. Therefore, Patent Document 1 defines that it is about 20 mm or less. Seem.
The present invention has been made paying attention to the above points, and aims to eliminate clogging coke more efficiently.

In order to solve the above-described problem, the scraping jig for a coke oven according to one aspect of the present invention is detachably attached to the tip of an extrusion ram of an extruder for extruding coke in the carbonization chamber, and scrapes the coke in the carbonization chamber. Coke oven scraping jig of
A mounting plate that is detachably attached to the front end of the extrusion ram, a pair of side plates that are supported by the mounting plate in a cantilevered state and extend in a direction away from the mounting plate, and a lower end of the pair of side plates. The front and upper sides are in an open state, and the bottom surface formed between the lower ends of the pair of side plates is open except for the position where the horizontal member is arranged. It is in a state
The horizontal member is an inclined surface whose upper surface becomes higher from the distal end side of the side plate toward the mounting plate side,
The maximum height of the horizontal member from the lower surface of the side plate is 100 mm or more,
When the length from the mounting plate position to the side plate tip is L, the horizontal member is provided in a range of (L / 4) from the side plate tip to the mounting plate side in a side view. And

At this time, it is preferable that the said side plate is a plate shape which becomes low as an upper end surface leaves | separates from the said attachment plate.
The coke scraping device according to one aspect of the present invention includes a coke oven scraping jig according to the above aspect and an extruder that attaches the coke oven scraping jig to a tip portion and advances and retracts the coke oven scraping jig. And a jig cooling device that is provided on both sides of the retreating track of the coke oven scraping jig and sprays water from the side toward the retreating coke oven scraping jig. .

Further, the coke scraping method according to one aspect of the present invention includes the coke oven scraping jig according to the above aspect attached to a lower portion of the extrusion ram tip of the extruder, and the extrusion ram is advanced to advance the coke oven scraping treatment. The coke is scraped out from the carbonization chamber by the coke oven scraping jig by retracting the extrusion ram after charging the tool into the carbonization chamber.
At this time, the extrusion ram is moved backward to drop the coke in the coke oven scraping jig from the bottom, and cooling water is sprayed from the side to the coke oven scraping jig to cool the coke oven scraping jig. It is good to do.

The scraping jig for a coke oven according to one aspect of the present invention clogs the scraping jig by setting the upper surface of the horizontal member as an inclined surface even if a horizontal member of 100 mm or more is provided on the tip side. It becomes easy to insert stably into coke, and by making the horizontal member as high as 100 mm or more, it becomes possible to scrape more clogged coke. As a result, it is possible to scrape coke in a small number of times.
Moreover, even if the portion other than the horizontal member arrangement portion is opened on the bottom surface of the jig, the height of the horizontal member is set to a high value of 100 mm or more as described above. Strength can be improved.

It is a perspective view which shows the scraping jig | tool for coke ovens concerning embodiment based on this invention. It is a figure which shows the scraping jig | tool for coke ovens concerning embodiment based on this invention, Comprising: (a) is a side view, (b) is a bottom view. It is a figure explaining discharge of clogged coke concerning an embodiment based on the present invention. It is a figure explaining the jig | tool cooling device which concerns on embodiment based on this invention. It is a front conceptual diagram explaining the jig cooling device concerning the embodiment based on the present invention.

Next, embodiments of the present invention will be described with reference to the drawings.
(Scraping jig for coke oven)
FIG. 1 is a perspective view for explaining a coke oven scraping jig 1 of the present embodiment. FIG. 2 is a side view and a bottom view of the coke oven scraping jig 1.
First, the configuration of the coke oven scraping jig 1 will be described.

As shown in FIGS. 1 and 2, the coke oven scraping jig 1 of the present embodiment includes a mounting plate 2, a pair of side plates 3, and a horizontal member 4, and the mounting plate 2 and a pair of side plates. 3 and the horizontal member 4 are fixed integrally.
The attachment plate 2 is a plate portion that is detachably attached to the front end surface of the extrusion ram 12. The attachment is performed by an attachment member (not shown). A mounting member (not shown) includes bolts and pins. The attachment position may be only the upper part of the attachment member.

  The pair of side plates 3 are supported by the mounting plate 2 in a cantilever state and extend in a direction away from the mounting plate 2 (forward). The pair of side plates 3 is set with an interval in the width direction, and forms a space S that accommodates coke that is scraped off the space between the pair of side plates 3. In the side plate 3 of the present embodiment, the lower end surface 3d constitutes a horizontal or substantially horizontal surface, and has an inclined surface that becomes lower as the upper end surface 3c moves away from the mounting plate 2. That is, the shape of the side plate 3 in a side view is a substantially triangular plate shape. An angle θ formed by the lower end surface 3d and the upper end surface 3c of the side plate 3 is set to, for example, 30 degrees or more and 60 degrees or less. When the formed angle θ is small, the coke storage space S formed between the pair of side plates 3 is smaller than the length L of a certain side plate, while when the formed angle θ is large, the coke is formed. When the furnace scraping jig 1 is clogged and charged toward the coke, the force applied to the coke oven scraping jig 1 increases, and accordingly, the rigidity of the coke oven scraping jig 1 needs to be set high. There is. It is preferable that the distance between the pair of side plates 3 is substantially the width of the front end portion of the extrusion ram 12. A wider width facilitates scraping a large amount of coke, but if the width is too wide, it is difficult to insert into the carbonization chamber.

The horizontal member 4 is a member horizontally mounted between the tip portions of the pair of side plates 3, and the bottom surface S <b> 1 formed between the lower ends of the pair of side plates 3 arranges the horizontal member 4. Other than the position is open.
The horizontal member 4 has a triangular shape in which the lower surface is horizontally or substantially horizontally arranged in the side view, and the upper surface 4a is directed from the distal end side of the side plate 3 toward the mounting plate 2 side. The slope becomes higher. That is, in the side view, the angle α formed by the lower surface and the upper surface 4a is less than 90 degrees and is set to, for example, 30 degrees or more and 60 degrees or less. In the present embodiment, the lower surface of the horizontal member 4 is set to be flush with the lower end surface of the side plate 3, and the upper surface of the horizontal member 4 is set to be flush with the upper surface of the side plate 3.

  The horizontal member 4 is provided in a range D of (L / 4) from the front end of the side plate 3 to the side of the mounting plate 2 when the length from the position of the mounting plate 2 to the front end of the side plate 3 is L. That is, the horizontal member 4 is disposed within a range of 1/4 of the front end side of the side plate 3. As a result, when viewed from the side, a portion of 3/4 or more of the length L of the lower end surface of the side plate 3 is opened behind the horizontal member 4. The maximum height H of the horizontal member 4 from the lower surface of the side plate 3 is set to 100 mm or more. The maximum height H of the horizontal member 4 is the closest position to the mounting plate 2.

  The reason why the maximum height H of the horizontal member 4 is set to 100 mm or more is that, as a result of experiments conducted by the inventors, 100 mm or more is necessary in order to reliably catch the lump coke. Since the horizontal member 4 is arranged within a range of ¼ of the side plate 3 tip side, the upper limit of the maximum height H of the horizontal member 4 is naturally limited, but the maximum of the horizontal member 4 is The upper limit of the height H is set to 200 mm, for example.

The horizontal member 4 of the present embodiment is composed of three plate members that form a triangular closed section in a side view for weight reduction.
Here, the side plate 3 is formed with a plurality of openings 3a along the upper end surface 3c. From this opening 3a, a drop stick or the like can be inserted as required. In addition, a fork hole 3b into which a fork of a forklift can be inserted is opened below the side plate 3.

(Coke scraping device)
Next, the configuration of the coke scraping device will be described.
As shown in FIG. 3, the coke scraping device of the present embodiment includes a coke oven scraping jig 1 having the above-described configuration and a coke oven scraping jig 1 detachably attached to a tip portion thereof. An extruder 13 for advancing and retracting the jig 1 and a jig for blowing water from the side toward the retreating coke oven scraping jig 1 provided on both sides of the retreating track of the coke oven scraping jig 1. And a cooling device 18 (see FIG. 4).

The extruder 13 includes a traveling carriage 10, an extrusion ram drive device 11, and an extrusion ram 12.
The traveling carriage 10 can travel on rails 14 laid along the parallel direction of the carbonization chamber 20. Thereby, the extruder 13 can be moved to the kiln opening position of the target carbonization chamber 20.
The extrusion ram driving device 11 is mounted on the traveling carriage 10. The extrusion ram drive device 11 is composed of a ram drive motor or the like, and can drive the extrusion ram 12 forward and backward in the front-rear direction (a direction perpendicular to the co-arrangement direction of the carbonization chamber 20).

Further, the traveling carriage 10 is preferably provided with a cooling water sprinkling nozzle 15 for sprinkling cooling water from above with respect to the coke oven scraping jig 1 attached to the tip of the extrusion ram 12.
Further, the traveling cart 10 is provided with a coke container 16 that receives coke dropped from the retreated coke oven scraping jig 1. As shown in FIGS. 4 and 5, jig cooling for cooling the coke oven scraping jig 1 by injecting cooling water onto the side surface of the coke oven scraping jig 1 is performed on the coke container 16. A device 18 is provided.

  The coke container 16 is a container that extends in the advancing and retreating direction of the extrusion ram 12 and is open at the top and front, and the height of the bottom plate 16a is determined by the scraping treatment for the coke oven attached to the extrusion ram 12. A plate-like support member 16b that is positioned below the tool 1 and that forms left and right wall portions is erected outward in the width direction from the coking oven scraping jig 1.

The jig cooling device 18 includes a nozzle header 18a and a plurality of spray nozzles 18b. The nozzle header 18a is supported on the upper portion of each support member 16b and extends in the forward / backward direction of the extrusion ram 12, and the cooling water is pumped. The plurality of spray nozzles 18b are provided in the nozzle header 18a along the axial direction of the nozzle header 18a.
The spray axis of each spray nozzle 18b is set to be obliquely upward inward (opposite nozzle direction) as indicated by an arrow in FIG. As a result, the cooling water can be jetted obliquely downward from the coke oven scraping jig 1.

Here, in FIG. 3, reference numerals 30 to 33 are devices for discharging the coke received by the coke container 16. That is, the coke that has fallen on the coke container 16 is formed in a wall portion like a coke oven by a chain conveyor 29 installed along the direction in which the coking chambers are juxtaposed between the coke receiving unit 16 and the furnace body. Alternatively, it is conveyed to the outside of the furnace group, and further conveyed by the conveyor 30 toward the kiln opening side opposite to the side where the extruder is disposed in the carbonization chamber 20 (coke discharge side). / Sent to the ground. The coke scraped from the carbonization chamber may be discharged to the outside by a conveyor attached to the extruder, or temporarily stored in a hopper installed in the extruder, and moved to the coke discharge place, and then there. It may be discharged.
The position of the extrusion ram 12 can be detected by a rotary encoder (not shown) or a limit switch.

(How to scrape clogged coke)
The traveling carriage 10 is moved to the position of the carbonization chamber 20 where coke clogging has occurred and stopped. The coke oven scraping jig 1 is attached to the lower end of the extrusion ram 12 (see FIG. 3).
Thereafter, the extrusion ram driving device 11 is driven to advance the extrusion ram 12 toward the inside of the carbonizing chamber 20, and the coke oven scraping jig 1 clogs and receives coke. (Dash-dotted line position in FIG. 3).

  At this time, the horizontal member 4 having a height of 100 mm or more is provided at the tip of the coke oven scraping jig 1, but the coke oven scraping treatment is that the upper surface 4a is inclined. The tool 1 is easily clogged and can be easily inserted into the coke, and an upward moment is prevented from occurring at the tip of the coke oven scraping jig 1 due to a load applied from the coke to the inclined upper surface of the horizontal member 4. As a result, the coke oven scraping jig 1 can be stably inserted into the coke. For example, when attaching the coke oven scraping jig 1 to the tip of the extrusion ram 12, even if only the upper side of the attachment plate 2 is attached, the upward moment can be reduced.

Thereafter, the extrusion ram 12 is moved backward, and the coke is taken out from the carbonization chamber 20 where the coke clogging has occurred by the jig 1.
At this time, when the height of the horizontal member 4 is set to 100 mm or more, the lump coke can be reliably captured and scraped out of the carbonization chamber 20. Here, when a 5 mm cross-section rectangular frame was provided at the tip as described in Patent Document 1 above, only about half the capacity of the coke oven scraping jig 1 could be scraped off. However, when the horizontal member 4 having a maximum height H of 100 mm was provided, it was possible to scrape the coke in an amount that the capacity of the coke oven scraping jig 1 was almost full. It has been confirmed that the maximum height H of the horizontal member 4 can be scraped up to 200 mm without hindrance, although it depends on the angle α.

  When the coke oven scraping jig 1 moves to the outside of the carbonization chamber 20, the coke scraped by the coke oven scraping jig 1 naturally falls downward from the bottom surface of the coke oven scraping jig 1. To do. At this time, since the bottom surface formed between the lower end portions of the pair of side plates is in an open state except for the position where the horizontal member 4 is disposed, the coke scraped out by the scraping jig 1 is subjected to operations such as thrusting down. It is not required and is discharged directly to the chain conveyor 29 below the coking chamber kiln or via the coke container 16. In the conventional method, when the discharge of the coke from the scraping jig is not successful, the worker has worked to push out the hot coke, but according to the method of the present invention, such work is not required, Coke scraping work can be done safely and efficiently.

  Here, the cooling water is sprayed from the cooling water sprinkling nozzle 15 located above the coke oven scraping jig 1 for a set time set in advance to the coke oven scraping jig 1 exiting from the carbonization chamber 20. Thus, the coke taken out from the carbonization chamber 20 by the coke oven scraping jig 1 is cooled by the cooling water from the cooling water sprinkling nozzle 15. As a result, the coke discharged from the coke oven scraping jig 1 can be reduced from being conveyed in a red hot state. That is, the thermal influence of the coke taken out from the carbonization chamber 20 can be reduced.

  At this time, the coke oven scraping jig 1 is cooled by cooling water from the jig cooling device 18 from the side, whereby deformation due to the thermal load of the coke oven scraping jig 1 can be suppressed. This makes it possible to increase the number of times the coke is scraped by the same coke oven scraping jig 1. The cooling of the coke oven scraping jig 1 by the jig cooling device 18 may be performed by setting the cooling water injection time by the jig cooling device 18 so that the coke oven scraping jig 1 is cooled to 300 ° C. or lower. good.

(effect)
This embodiment has the following effects.
(1) The coke oven scraping jig for scraping the coke in the carbonization chamber is open at the front and upper sides, and the bottom formed between the lower ends of the pair of side plates has the horizontal member. Except for the position where it is placed, it is open. Further, the horizontal member has an inclined surface whose upper surface becomes higher as it goes from the tip end side of the side plate to the mounting plate side, and the maximum height of the horizontal member from the lower surface of the side plate is 100 mm. When the length from the mounting plate position to the side plate tip is L, the horizontal member is provided within the range of (L / 4) from the side plate tip to the mounting plate side in a side view. It is done.

According to this configuration, even when a horizontal member of 100 mm or more is provided on the tip end side, the scraping jig is squeezed and stably placed in the coke by forming the upper surface of the horizontal member into a wedge shape with an inclined surface. It becomes easy to insert, and by making the horizontal member as high as 100 mm or more, it becomes possible to scrape more clogged coke. As a result, it is possible to scrape coke in a small number of times.
Moreover, even if the portion other than the horizontal member arrangement portion is opened on the bottom surface of the jig, the height of the horizontal member is set to a high value of 100 mm or more as described above. Strength can be improved.

(2) The side plate has a plate shape that becomes lower as the upper end surface moves away from the mounting plate.
This makes it easier to insert the side plate into the coke.
(3) Blow water from the side toward the retreating coke oven scraping jig.
This makes it possible to suppress thermal deformation due to red hot coke of the coke oven scraping jig. This makes it possible to increase the number of uses of the coke oven scraping jig.

DESCRIPTION OF SYMBOLS 1 Coke oven scraping jig 2 Mounting plate 3 Side plate 4 Horizontal member 4a Upper surface 10 Traveling carriage 11 Extrusion ram driving device 12 Extrusion ram 13 Extruder 15 Cooling water sprinkling nozzle 16 Coke container 18 Jig cooling device 18a Nozzle header 18b Spray nozzle 20 Carbonization chamber

Claims (5)

A coking furnace scraping jig, which is detachably attached to an extrusion ram tip of an extruder for extruding coke in the carbonization chamber, and scrapes coke in the carbonization chamber,
A mounting plate that is detachably attached to the front end of the extrusion ram, a pair of side plates that are supported by the mounting plate in a cantilevered state and extend in a direction away from the mounting plate, and a lower end of the pair of side plates. The front and upper sides are in an open state, and the bottom surface formed between the lower ends of the pair of side plates is open except for the position where the horizontal member is arranged. It is in a state
The horizontal member is an inclined surface whose upper surface becomes higher from the distal end side of the side plate toward the mounting plate side,
The maximum height of the horizontal member from the lower surface of the side plate is 100 mm or more,
When the length from the mounting plate position to the side plate tip is L, the horizontal member is provided in a range of (L / 4) from the side plate tip to the mounting plate side in a side view. Scraping jig for coke oven.   2. The coke oven scraping jig according to claim 1, wherein the side plate has a plate shape whose upper end surface becomes lower as the distance from the mounting plate increases. Coke oven scraping jig according to claim 1 or 2,
An extruder that attaches the coke oven scraping jig to the tip and advances and retracts the coke oven scraping jig;
A jig cooling device that is provided on both sides of the retreating track of the coke oven scraping jig, and sprays water from the side toward the retreating coke oven scraping jig;
A coke scraping device comprising:   The coke oven scraping jig according to claim 1 or 2 is attached to a lower portion of the extrusion ram tip of the extruder, and the extrusion ram is advanced to insert the coke oven scraping jig into the carbonization chamber. Then, the coke scraping method is characterized in that the coke is scraped from the carbonization chamber by the above-mentioned scraping jig for the coke oven by retracting the extrusion ram.   Retreat the extrusion ram to drop the coke in the coke oven scraping jig from the bottom and cool the coke oven scraping jig by spraying cooling water from the side onto the coke oven scraping jig. The coke scraping method according to claim 4.

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