JPH10287880A - Dust collecting device when conveying coke taken out of oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cheap and safe dust-collecting device used when conveying cokes taken out of an oven. SOLUTION: This dust-collecting device is installed between a coke oven 1 and CDQ6, and collects raising dust and fume while conveying scorching cokes taken out of the oven on the way from the coke oven 1 to CDQ6. The dust-collecting device comprises a guide car 3 having functions for collecting the raising fume and dust when discharging the cokes, a dust-collecting tunnel 4 covering the whole rails on which a bucket carriage 5 traveling from the coke oven 1 to the CDQ 6, a connector 7 for connecting the guide car 3 with the dust-collecting tunnel 4, arranged at the opposite position to the oven 1 in the dust collecting tunnel 4 so as to open when the cokes are taken into the bucket carriage 5 and to close after the cokes are take into the bucket carriage 5, a dust collecting duct 8 connected to the dust collecting tunnel 4 for sucking the raised fume and dust when moving the bucket carriage 5, and a dust collector installed on the way of the dust collecting duct.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting apparatus for a coke conveying path from a coke oven kiln to a CDQ in a coke manufacturing facility having a dry fire extinguishing facility (hereinafter abbreviated as "CDQ"). It is.

[0002]

2. Description of the Related Art Conventionally, in a coke oven for mass production, energy saving measures such as extinguishing red hot coke discharged from a kiln after dry distillation with CDQ and recovering the sensible heat of the red hot coke with steam or wet fire extinguishing are used. In general, environmental measures are being implemented in order to reduce environmental impact.

[0003] By the way, as a means for transporting glow coke discharged from a coke oven to a CDQ and charging it into the CDQ, a bogie equipped with a bucket is usually used.
After running this truck from the coke oven to the lower part of the CDQ, the bucket is lifted from the lower part to the upper part of the CDQ using a hoist, the charging lid of the CDQ is opened, and the bucket is mounted on the CDQ charging entrance. It has been practiced to open the bottom plate of the bucket and to put red hot coke inside the CDQ.

[0004] However, since the upper part of the initial bucket was open, there was a problem that coke dust was generated and scattered and a flame was blown out during transportation, which was environmentally unfavorable. Therefore, as a means for solving such a problem, there has been proposed a bucket lid opening / closing device described in Japanese Patent Publication No. 58-17788 or Japanese Patent Application Laid-Open No. 7-278857.

[0005] Among them, the one proposed in Japanese Patent Publication No. 58-17788 is provided with a double-leafed bucket lid at the opening at the top of the bucket, and is opened and closed by a link mechanism attached to the outside of the bucket lid. . Also, Japanese Patent Laid-Open No. 7-2
Japanese Patent Publication No. 78857 proposes to provide a movable lid (sliding type) that is divided into two at an opening above a bucket, and to open and close the movable lid with a parallel link mechanism provided outside the movable lid.

[0006] However, a lid is installed on the bucket, and Japanese Patent Publication No. 58-17788 or Japanese Unexamined Patent Publication No.
Even if the opening and closing device can be opened and closed by the opening and closing device described in Japanese Patent No. 8857, no dust collecting device is installed on the truck on which the bucket is mounted, and pyrolysis gas or combustion gas is generated from coke. Therefore, in the transportation process to the CDQ, dust and smoke are recognized.

Further, in the above-described transport means, a CD is used.
When opening the charging lid at the top of Q
When red hot coke is injected into DQ, dust and smoke are recognized, which is environmentally problematic.

Therefore, as a means for solving this problem, a method of transporting red hot coke as disclosed in Japanese Patent Application Laid-Open No. 7-268337 has been proposed. This Japanese Patent Application Laid-Open No. Hei 7-2683
In the method proposed in Japanese Patent No. 37, after the red hot coke is received in the bucket, the slide gate provided in the receiving port of the bucket is closed. Then, after transporting to the CDQ and connecting the receiving port of the bucket to the charging lid above the CDQ, the slide gate is opened and the red hot coke is discharged to the CDQ.
At this time, the dust generated in the bucket while receiving the red hot coke in the bucket, during the transportation, and while feeding the red hot coke into the CDQ, was provided in the bucket. The dust outlet is connected to a sliding dust collection duct to send the dust to the dust collector.

[0009]

However, the method described in JP-A-7-268337 has the following two problems. After transporting the bucket to the bottom of the CDQ,
The connection mechanism is complicated in order to make the connection mechanism with the sliding dust collection duct follow the operation of lifting the bucket from the lower part to the upper part of the Q and then inverting the bucket at the upper part of the CDQ. Further, since the suction dust-containing gas has a high temperature of several hundred to 1000 ° C., heat resistance is required. As described above, a large amount of capital investment is required for practical use, and a large amount of cost is required for maintenance and maintenance.

[0010] As a recent coke production method, a kiln is discharged at a temperature at which the center temperature of coke is lower than in the past, and CDQ
The method of adjusting coke quality by performing post-treatment such as blowing air in is aimed at reducing the carbonization heat source and improving the operating rate of coke ovens. ing.

[0011] The coke discharged from the kiln by this method has a large amount of residual volatile components, and as a result, the amount of combustible pyrolysis gas generated increases from several times to about 10 times the conventional value. However, according to the method described in JP-A-7-268337, which is connected to a dust collecting duct from a sealed bucket and sent to a dust collector, the concentration of the unburned pyrolysis gas easily reaches an explosion range, and There are top and safety issues.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an inexpensive and safe dust collecting apparatus for transferring coke from a kiln.

[0013]

In order to achieve the above-mentioned object, a dust collecting apparatus for conveying coke out of a kiln according to the present invention is provided with a function to collect smoke and dust generated when coke is extruded in a guide car. , Bucket truck is CD from coke oven
The entire path to Q is covered with a dust collection tunnel, and a connector that opens when receiving coke to the bucket truck and closes after receiving the coke is provided at the position facing the kiln in the dust collection tunnel. A dust collection duct connected to suck smoke and dust generated during movement is provided, and a dust collector is provided in the middle of the dust collection duct. By doing so, Japanese Patent Laid-Open No. 7-2
Problems associated with the method described in Japanese Patent No. 68337 can be solved.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The dust collecting apparatus for transferring coke from a kiln according to the present invention is provided between a horizontal chamber furnace type coke oven and a CDQ, and is used for transferring red hot coke from the coke oven to the CDQ. A guide truck having a function of collecting smoke and dust generated when coke is extruded, and a dust collection tunnel covering the entire route of a bucket truck moving from the coke oven to the CDQ. , The connector for connecting the guide truck and the dust collection tunnel, which are located at the position opposite to the kiln in the dust collection tunnel to open when receiving coke to the bucket truck and close after receiving the coke, and to generate smoke when moving the bucket truck. A dust collection duct connected to a dust collection tunnel to suction dust,
It is composed of a dust collector interposed in the middle of this dust collection duct, and if necessary, inside the dust collection tunnel,
An air injection nozzle for cleaning the bucket truck is provided, and a water passage is provided below the bucket truck traveling rail in the dust collection tunnel.

In the present invention, the dust collection tunnel is constructed of a nonflammable material such as concrete, a metal flame retardant material such as a steel plate, or a hybrid material thereof, and is affected by red hot coke of about 1000 ° C. in a bucket truck. It is important to take care not to be sensitive. Also, the dust collection tunnel
It is desirable to adopt a configuration in which outside air flows in a little by suction from the dust collector side instead of a completely closed structure. This is because the combustible gas generated from the red hot coke is actively burned in the dust collection tunnel.

In the present invention, the dust collection duct may be disposed at least at one location in the dust collection tunnel. The temperature of the air inside the dust collection tunnel partially approaches 1000 ° C due to the influence of the red hot coke and the combustion of the combustible gas generated from the red hot coke, but the total temperature exceeds about 100 ° C. In consideration of the same operation as in the case of (1), the position of the dust collection duct is desirably at the top of the dust collection tunnel, such as the top of the CDQ hoisting tower.

In the dust collecting apparatus for transferring coke from the kiln of the present invention, the guide car and the dust collecting tunnel are connected by a connector provided in the kiln portion of the dust collecting tunnel before the red hot coke is discharged from the kiln. After the two have been in a flowing state, the bucket truck is arranged below the connected connector. And when extruding red hot coke by the extruder, the extruded red hot coke is
It passes through the connector and is thrown into the bucket cart. Note that the connector is shut off immediately before the connection between the guide vehicle and the dust collection tunnel is released.

At this time, in the dust collecting apparatus of the present invention, the guide wheel is provided with a dust collecting hood and a dust collecting duct extending to the dust collector, and the furnace lid is opened before the red hot coke is extruded, and the furnace is heated at the time of the red hot coke extruding and after the extruding. Collects smoke and dust before the lid is attached.

The bucket truck into which the red-hot coke is charged is transported to the CDQ, and dust and smoke generated during the transport are collected by a dust collector from a dust collection tunnel via a dust collection duct.

In the present invention, inside the dust collection tunnel,
When the air jet nozzle for cleaning the bucket truck is provided, dust adhering and accumulating on the bucket and the bucket truck can be effectively removed. In addition, if a water channel is provided under the bucket truck traveling rail in the dust collection tunnel, water is flowed through this water channel to reduce deposits such as falling coke powder when red hot coke is injected into the bucket. Can be removed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dust collecting apparatus for conveying coke from a kiln according to the present invention will be described below with reference to an embodiment shown in FIGS. Fig. 1 shows the delivery and CDQ of red hot coke from the kiln
FIG. 2 is a schematic diagram showing an entire configuration up to charging into a tank, FIG. 2 is a diagram showing a configuration of a part for receiving red hot coke from a coke oven mouth to a bucket in a dust collection tunnel in the case of a swing damper system, and FIG. FIG. 4 is a view similar to FIG. 2 in the case of a damper method, FIG. 4 is an explanatory view of an air injection nozzle for cleaning a bucket and a bucket truck, and FIG. 5 is a description of a water channel provided below a bucket truck traveling rail in a dust collection tunnel. FIG.

In the drawing, reference numeral 1 denotes a horizontal chamber furnace type coke oven, in which a guide wheel 3 is movable on a rail 2 laid along the mouth of the oven. The guide wheel 3 is provided with a dust collection hood 3a and a dust collection duct 3b leading to a dust collector (not shown), and collects smoke and dust generated when coke is pushed out.

Reference numeral 4 denotes a bucket truck 5 from the coke oven 1 to C
This is a dust collection tunnel that covers the entire path to the DQ 6. A connector 7 is arranged for each kiln 1 a of the coke oven 1 above the dust collection tunnel 4, and a dust collector is provided above the hoisting tower 6 a of the CDQ 6. A dust collection duct 8 connected to a dust collector (not shown) is provided to guide smoke and dust in the dust collection tunnel 4 to the dust collector. However, the position of the dust collection duct 8 does not need to be limited to the upper part of the hoisting tower 6a of the CDQ 6, and may be provided, for example, at the end of the running section of the bucket truck 5 of the dust collecting tunnel 4. It may be provided along with the end of the running section of the bucket truck 5.

The connector 7 emits smoke and emits gas from the opening of the furnace lid of the bucket 10 before the red hot coke 9 is extruded from the coke oven 1 by the extruder, to the time when the red hot coke 9 is extruded and to the mounting of the furnace lid after the extrusion. In order to collect dust, it is opened when the coke is received by the bucket truck 5 and closed after the coke is received, and has a function of circulating or shutting off between the guide wheel 3 and the dust collection tunnel 4.

Therefore, as long as the connector 7 has the above-described function, as shown in FIG. 2, the connecting sleeve 7a, the sliding cylinder 7b of the connecting sleeve 7a, the swing damper 7c, and the swing damper 7c In a swing damper system including a moving cylinder 7d, a connecting sleeve 7a, a sliding cylinder 7b of the connecting sleeve 7a, a gate damper 7e, and a sliding cylinder 7f of the gate damper 7e as shown in FIG. May be used.

In this embodiment, as shown in FIG.
An air pipe 11 is installed inside the dust collection tunnel 4 so as to cover, for example, the entire circumference of the bucket 10 and the bucket cart 5, and a number of air injection nozzles 12 are arranged in the air pipe 11, and the bucket 10 and the bucket cart are arranged. No. 5 discloses a device capable of effectively removing dust adhering and accumulating on air.

Further, in the present embodiment, as shown in FIG. 5, the traveling rail 13 of the bucket truck 5 in the dust collecting tunnel 4 is supported by a rail receiving stand 14 and the rest is a water channel 15.
It is disclosed that by intermittently flowing water through the water channel 15, deposits such as falling coke powder when the red hot coke 9 is charged into the bucket 10 can be effectively removed.

In FIG. 1, reference numeral 16 denotes a bucket 10 which is lifted from the lower portion of the CDQ 6 and moved onto the
This is a hoisting device that feeds the red hot coke 9 in the bucket 10 to the CDQ 6 from the charging inlet 6b of the DQ 6.

The dust collecting apparatus of the present invention for transporting coke from the kiln is configured as described above. Next, the red hot coke 9 is discharged from the coke oven using this dust collecting apparatus, and C is discharged.
The case where the red hot coke 9 is charged into the DQ 6 will be described.

First, before the red hot coke 9 is discharged from the coke oven 1, the space between the guide wheel 3 and the dust collection tunnel 4 is
The two are connected by a connector 7 provided in the kiln 1a, and a flow state is established between them. After that, the bucket truck 5 is arranged below the connected connector 7.

In the above state, when the extruder is driven to extrude the red hot coke 9 from the kiln 1a of the coke oven 1, the extruded red hot coke 9 is
After passing through the connector 7, it is put into a bucket 10 mounted on the bucket carrier 5.

When the red hot coke 9 is introduced,
The bucket cart 5 is transported to a position directly below the CDQ 6, and the bucket 10 is lifted from the bucket cart 5 by the hoisting device 16 at this position. Lifted bucket 10
Is moved onto the CDQ 6, where the bottom of the bucket 10 is opened, and red hot coke 9 is introduced from the charging port 6b.

In the dust collector of the present invention, the red hot coke 9 is discharged from the coke oven and the red hot coke 9 is stored in the CDQ 6.
During charging, the smoke and dust generated during the period from the opening of the furnace lid before extruding the red hot coke 9 to the mounting of the furnace lid after extruding the red hot coke 9 and after the extrusion are collected by the dust collecting hood 3a provided on the guide wheel 3 and the dust collector. Can be effectively collected by the dust collection duct 3b reaching the bottom. Dust and smoke generated during transportation in the dust collection tunnel 4 can be effectively collected by the dust collection duct 8 from the dust collection tunnel 4 to the dust collector.

In addition, as in this embodiment, an air pipe 11 is installed inside the dust collection tunnel 4 and
Bucket 1 from a number of air injection nozzles 12
By injecting air to the bucket 0 and the bucket truck 5, dust adhering and accumulating on the bucket 10 and the bucket truck 5 can be effectively removed. Similarly, if a water channel 15 is provided in the dust collecting tunnel 4 and water is intermittently flowed through the water channel 15, deposits such as falling coke powder when the red hot coke 9 is charged into the bucket 10 can be effectively removed. .

[0035]

As described above, in the dust collecting apparatus of the present invention for transferring coke from the kiln, the CDQ is discharged from the kiln to the CDQ.
By covering the entire red hot coke transport path up to the charging with a dust collection tunnel, it is possible to eliminate smoke and dust, and also to safely collect coke discharged from a low-temperature kiln. Further, if an air injection nozzle for cleaning the bucket truck is provided inside the dust collection tunnel, dust adhering and accumulating on the bucket and the bucket truck can be effectively removed. Also, if a water channel is provided under the bucket truck traveling rail in the dust collection tunnel, water is intermittently flowed in this water channel to reduce deposits such as falling coke powder when red hot coke is injected into the bucket. Can be removed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the overall configuration of a red-hot coke from taking out from a kiln to transporting and loading it into a CDQ.

FIG. 2 is a diagram showing a configuration of a portion for receiving glow coke from a coke oven kiln to a bucket in a dust collection tunnel in the case of a swing damper system.

FIG. 3 is a diagram showing a configuration of a portion for receiving glow coke from a coke oven port to a bucket in a dust collection tunnel in the case of a gate damper method.

FIG. 4 is an explanatory view of an air injection nozzle for cleaning a bucket and a bucket truck.

FIG. 5 is an explanatory view of a water channel provided below a bucket truck traveling rail in a dust collection tunnel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coke oven 1a Kiln 3 Guide car 3a Dust collection hood 3b Dust collection duct 4 Dust collection tunnel 5 Bucket truck 6 CDQ 7 Connector 8 Dust collection duct 9 Red hot coke 12 Air injection nozzle 15 Waterway

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroshi Nakamura 1850 Minato, Wakayama City, Wakayama Prefecture Sumitomo Metal Industries, Ltd. Wakayama Works

Claims (3)

[Claims] 1. A device provided between a horizontal chamber furnace type coke oven and a dry fire extinguishing system, for collecting dust and smoke while conveying red hot coke discharged from the coke oven to the dry type fire extinguishing system. , A guide truck with the function of collecting smoke and dust generated when extruding coke, a dust collection tunnel covering the entire path of the bucket truck from the coke oven to the dry fire extinguishing system, and a dust truck opened when receiving coke into the bucket truck. In the dust collection tunnel, the connector for connecting the guide car and the dust collection tunnel, which is arranged at the position opposite to the kiln in the dust collection tunnel to close after receiving, and the smoke and dust generated when moving the bucket truck A dust collecting device for coke conveyance from a kiln, comprising: a dust collecting duct connected to the dust collecting duct; and a dust collector interposed in the dust collecting duct. 2. The dust collecting apparatus according to claim 1, wherein an air injection nozzle for cleaning the bucket truck is provided inside the dust collecting tunnel. 3. The dust collecting apparatus according to claim 1, wherein a water channel is provided below the bucket truck traveling rail in the dust collecting tunnel.