JPH11228969A - Method and apparatus for tightly closing pusher-side oven port in coke pushing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and apparatus for tightly closing a pusher-side oven port whereby the dust and smoke generation from an oven port at the pusher side of a coke oven can be greatly reduced and dust can be collected effectively with a small quantity of air. SOLUTION: The oven port side of an oven lid placing or removing apparatus 5 of a two-point-type coke oven pusher 4, of which the positions in oven-lid placing or removing operation and in coke pushing operation are different, is tightly closed with an oven port closing hood 11 in a plane square U shape formed by vertical wall-shaped rotary dampers 13 and a vertical wall-shaped slide damper 14. Simultaneously, the space between the top of a pushing rack beam 6 and a back stay is tightly closed with a pushing rack beam closing hood which comprises a fixed hood having, at the reverse port side, an opening allowing the pusher beam to pass through and a rotary damper 25 at the top oven port side and a vertical wall-shaped movable hood in contact with a backstay installed at the oven port side. Thus, the dust and smoke generation from the pusher-side oven port can be greatly reduced and dust is effectively collected with a small quantity of air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of a kiln by a two-point coke oven extruder in which the extruder position is different between a furnace lid attaching / detaching operation and a coke extruding operation. The present invention relates to a method and an apparatus for sealing a mouth of an extruder for greatly reducing smoke generation.

[0002]

2. Description of the Related Art A coke oven has a heat storage chamber at a lower part of a furnace body, and a combustion chamber and a carbonization chamber are alternately arranged at an upper part of the heat storage chamber. Coking coal, which is a coke raw material, is charged into a carbonization chamber via a coal-carrying car movably mounted on a rail laid on a coke oven, and air preheated in the animal heat chamber and poor gas or the air The combustion heat generated by the combustion of the gas and the rich gas in the combustion chamber is heated and carbonized through the furnace wall to form coke. The coke that has been carbonized is loaded from a carbonization chamber onto a coke bucket truck through an extruder rack beam of an extruder through a door of a coke guide truck, dry-fire extinguished, and then supplied to a blast furnace.

Recently, when the coke temperature reaches 700 ° C. to 900 ° C. in the coking chamber of the coke oven, the coke is discharged from the kiln, the coke is charged into the pre-chamber of the dry fire extinguishing system, and air is introduced into the pre-chamber. Introduces gas generated from coke in the pre-chamber
There has been proposed a method for producing coke by heating to 0 ° C. or higher and terminating the dry distillation (Japanese Patent Application Laid-Open No. 2-194087).

[0004] The extruding operation of the coke after the carbonization is an operation that frequently generates dust and smoke. In particular, the coke temperature disclosed in Japanese Patent Application Laid-Open No.
When the kiln is discharged when the temperature reaches ℃ to 900 ° C, compared to the case where the coke that has been dry-distilled is discharged,
Since the coke oven gas is being generated during the carbonization, a very large amount of dust and gas leaks from the kiln opening into the atmosphere.

On the coke oven extruder side, the coke oven gas in the coking chamber is leaked while the oven lid is removed by the detacher during the operation of attaching and detaching the oven lid and moved to the oven lid cleaning position. In this case, the coke in the kiln mouth collapses and dust is generated. Also, dust is generated when the furnace lid is cleaned by the furnace lid cleaning device. And the most quantitatively,
Gas and dust during coke extrusion work while red hot coke is being extruded by an extrusion rack beam from the carbonization chamber with the furnace lid removed.

Further, after extruding the red hot coke, the furnace lid is attached, and coking coal is again charged from the charcoal truck into the carbonization chamber.
The process of opening the leveling opening of the furnace lid and leveling the top of the coking coal with the leveler of the extruder, or opening the leveling opening and cleaning the leveling port and the leveling lid There is dusting in the process.
Dispersing such dust into the atmosphere not only degrades the working environment, but also scatters around the surrounding area and poses a serious problem in preventing pollution.

For this reason, various measures have been taken to prevent dust and smoke from being produced around the mouth of the coking chamber of the coke oven. However, the effect of reducing dust and smoke is not sufficient. Further improvement is desired. In particular, the device for preventing dust and smoke from the kiln mouth on the extruder side of the coke oven is behind the dust prevention equipment from coke guide trucks, coke bucket trucks, etc. There is a need for effective dust collection measures.

Conventionally, as a countermeasure against dust collection around the extruder-side kiln opening, a dust-collecting hood is provided on the extruder so as to cover the upper part of the outside of the kiln opening of the coke oven. A dust collecting device provided with a movable hood having a width substantially the same as that of a kiln mouth which is close to and above the upper part thereof (see Japanese Patent Application Laid-Open No. 50-3090).
No. 3), a dust collecting hood is provided above the kiln opening between the back stays, and a dust collecting device that covers the kiln opening during the coke extrusion operation with a windproof hood that blocks the ceiling and three sides (Japanese Patent Laid-Open No. 52-425).
No. 03), a dust collecting apparatus provided with a dust collecting hood including all dust generating positions above a space between an extruder and a coke oven (Japanese Patent Application Laid-Open No. 53-124508), a roof and There has been proposed a dust collecting hood for an extruder provided with a dust collecting hood having a side wall and entirely covering the dust generating portion of the extruder itself in front of the cab (Japanese Utility Model Application Laid-Open No. 54-120568).

The above-mentioned JP-A-50-30903, JP-A-52-42503, and JP-A-53-124508
None of the dust collection measures disclosed in Japanese Unexamined Patent Application Publication No. Hei. As an extruder-side kiln port dust-collecting measure to solve these problems, the entire dust-collecting hood covers all the dust-generating points of the extruder at once.
A local dust collection system is provided for each dust generation point, and a shutter is provided that slides around the coke oven side opening of the entire dust collection hood to seal the space between the dust collector and the back stay, and collects the air volume of the local dust collection system as a whole. There has been proposed a method (Japanese Patent Laid-Open No. 6-340880) of collecting dust by changing it in accordance with the operation of a device that generates dust in a dust hood.

[0010]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 6-340.
The dust collection countermeasure disclosed in Japanese Patent Publication No. 880 discloses a system in which the entire dust collecting hood covers all the dust-generating points of the extruder at once, prevents dust from scattering into the atmosphere due to cross wind, etc., and generates dust in the entire dust collecting hood. Dust is collected by changing the air volume of the local dust collection system in accordance with the operation of equipment that generates dust in the entire dust collection hood. Since the dust is covered with the hood, the locally generated dust inevitably diffuses in the entire dust collection hood, and effective dust collection cannot be performed. In other words, the amount of invalid air at the time of dust collection increases.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art, to significantly suppress the generation of dust and smoke from the mouth of the coke oven extruder, and to collect dust during coke extrusion and before and after coke extrusion. It is an object of the present invention to provide a method and an apparatus for sealing an extruder-side kiln opening at the time of taking out of a coke oven kiln, which can effectively perform the process.

[0012]

According to the first aspect of the present invention, there is provided a method for sealing a mouth of an extruder at the time of taking out a coke kiln according to the first aspect of the present invention. A coke oven extruder side furnace mouth sealing method,
A vertical wall-shaped rotary damper rotatable between a kiln opening side and a back stay of a furnace lid detacher and a vertical axis of which is a vertical axis, and a vertical wall adjacent to the rotary damper. An opening and a tip that allow the passage of the extrusion rack beam between the tip of the extrusion rack beam and the backstay, and the reverse kiln mouth side, while sealing with the kiln mouth sealing hood that forms a flat U shape with the slide damper of The fixed hood has a rotary damper on the kiln opening side and covers the passage range of the extruded rack beam on the kiln opening side, and a movable hood that moves so as to be able to approach and separate from the back stay provided on the kiln opening side of the fixed hood. It is to be sealed with an extrusion rack beam sealing hood.

[0013] As described above, the kiln opening side of the furnace lid detacher of the two-point coke oven extruder is formed with a vertical U-shaped rotating damper and a vertical wall sliding damper to form a flat U-shape. By closing the furnace lid before and after coke extrusion and mounting work by sealing with a closed hood,
It is almost sealed with a kiln opening hood, and if a kiln opening dust collecting hood is provided just above the opening at the top of the kiln opening hood, dust generation from the kiln opening during furnace lid removal work before and after coke extrusion is extremely small. Dust can be collected effectively by the air volume. Also,
Between the tip of the extrusion rack beam and the backstay, a fixed hood having an opening allowing the passage of the extrusion beam on the reverse kiln mouth side and a rotating damper on the tip kiln mouth side, and provided on the kiln mouth side of the fixed hood. When the coke is extruded and the extruded rack beam is pulled back, the periphery of the extruded rack beam at the kiln opening side is closed by the extrusion. It is sealed with a rack beam sealing hood, and if a kiln opening dust collecting hood is provided immediately above the opening at the top of the moving hood, dust generation from the kiln opening at the time of coke extrusion and at the time of pulling back the extrusion rack beam, with an extremely small air volume. Dust can be collected effectively.

Further, in the extruder-side kiln opening sealing device at the time of taking out the coke kiln according to the second aspect of the present invention, a two-point coke oven extruder in which the extruder positions are different between a furnace lid removal operation and a coke extrusion operation. A vertical wall-shaped rotary damper whose vertical end is rotatable around a vertical rotation axis by a rotation mechanism in front of the furnace port of the furnace lid detacher, A vertical wall-shaped slide damper adjacent to the rotary damper and slidable by the advance / retreat mechanism has a kiln-opening hood that forms a flat U-shape. A fixed hood having a planar rectangular shape covering the movable hood, a movable hood having a vertical wall shape which can move forward and backward so as to be able to move toward and away from a back stay disposed on a tip side wall portion of the fixed hood, and a kiln opening side of the fixed hood. Rotating damper that can be sealed An extrusion rack beam sealing hood comprising an opening allowing passage of an extrusion rack beam provided on the reverse kiln opening side of the fixed hood is provided, and the kiln opening sealing hood upper opening and the extrusion rack beam sealing hood are provided. A kiln mouth dust collection hood is to be installed directly above the opening of the movable hood.

As described above, a kiln opening in which a vertical U-shaped rotary damper and a vertical wall slide damper form a flat U-shape before the kiln opening of the furnace lid detacher of the two-point coke oven extruder. By providing a closed hood, the furnace lid can be almost completely sealed around the furnace lid detacher and furnace opening hood before and after the coke extrusion, before and after coke extrusion, and the slide damper can be closed after the furnace lid is removed. For example, since the kiln mouth can be completely sealed with the kiln opening hood, the kiln dust collecting hood arranged in the upper opening of the kiln opening hood can be used to remove the furnace lid before and after coke extrusion, from the kiln opening at the time of mounting work. Dust can be collected effectively with an extremely small air volume. Also, a flat rectangular fixed hood that covers the periphery of the tip of the extrusion rack beam and the passage area of the extrusion rack beam on the kiln opening side, and a vertically movable free-standing vertical wall that abuts a back stay provided on the tip side wall of the fixed hood. Extrusion rack beam comprising: a movable hood having a shape, a rotary damper provided so as to seal the kiln opening side of the fixed hood, and an opening provided on the reverse kiln opening side of the fixed hood to allow passage of an extruding beam. With the provision of the closed hood, the kiln opening is closed by the movable hood and the fixed hood that are in contact with the backstay when extruding coke and pulling out the extrusion rack beam. In the kiln mouth dust collection hood that was arranged,
The dust generated from the kiln mouth during coke extrusion and pulling out the extrusion rack beam can be effectively collected with an extremely small air volume.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A closed mouth hood provided on the open mouth side of a furnace lid detacher of a two-point coke extruder according to the present invention has a vertically rotating shaft whose vertical end is vertically rotated by a rotating mechanism. And a vertical wall-shaped rotary damper rotatable as a movable member, and a vertical wall-shaped slide damper adjacent to the rotary damper and slidable by an advance / retreat mechanism. As a combination of a vertical wall-shaped rotary damper and a double-sided vertical wall-shaped slide damper, the vertical wall-shaped rotary dampers on both sides abut against the side of the back stay to seal the side of the kiln opening, The combination of a slide damper that seals the front of the kiln mouth, or a vertical wall-shaped slide damper on both sides abuts the front of the backstay to seal the side of the kiln mouth, and a vertical wall-shaped rotating damper on both sides sets the front of the kiln mouth Can be formed into a flat U-shape by adopting a combination that seals.

A kiln opening hood of a combination in which vertical wall-like rotary dampers on both sides abut against the side of the back stay to seal the side of the kiln opening, and a double-walled vertical wall-shaped slide damper seals the front of the kiln opening. In this case, the base end of the vertical wall-shaped rotary damper is used as a rotatable axis, and a seal material is provided at a portion of the distal end that abuts against the backstay side to improve the adhesion with the backstay side. One end of the double-sided vertical wall-shaped slide damper is brought into contact with a tip seal member provided on the other side, thereby improving the adhesion of the double-sided vertical wall-shaped slide damper. In addition, in the case of a kiln-opening hood in which a vertical wall-shaped slide damper seals the side of the kiln opening and vertical wall-shaped rotating dampers on both sides seal the front of the kiln opening, the tip of the vertical wall-shaped slide damper is used. A seal material is provided in contact with the back stay surface to improve the adhesion to the back stay, and the vertical wall-shaped rotation dampers on both sides are provided with a seal material at the overlapping portion at the tip, and a vertical wall-shaped rotation damper is provided. To improve the adhesion.

As a rotating mechanism of the vertical wall-shaped rotary damper, a vertical end of the vertical wall-shaped rotary damper is rotated about a vertical rotation axis to abut on a side portion of the back stay or The mechanism is not particularly limited, as long as the mutual tips are overlapped with each other, but a mechanism for rotating the rotating shaft of the vertical wall-shaped rotating damper by a cylinder method, a rack and pinion method, or the like is suitable.

The operation of the vertical wall-shaped rotary damper is performed when the vertical wall-shaped rotary damper seals the front side of the kiln opening.
After the extruder is moved in the direction of the furnace group to position the furnace lid detacher in the carbonization chamber where the furnace is removed, the extruder is rotated before the furnace lid is detached and brought into contact with the side of the backstay. When the vertical wall-shaped rotating damper seals the front of the kiln opening, it is rotated in conjunction with the forward and backward movement of the furnace lid detacher so as not to interfere with the furnace lid detacher. When the vertical wall-shaped rotating damper seals the front of the furnace opening, the front of the furnace opening is opened before the furnace lid remover advances, and the vertical wall-shaped rotating Although the damper is rotated to be in a semi-open state, if the cross-sectional area of the furnace lid detacher relative to the opening cross-sectional area of the vertical wall-shaped rotary damper is set to a high ratio, air is sucked from the rear part of the furnace lid detacher. Can be largely suppressed, and a substantially sealed state can be obtained. Linkage of this vertical wall-shaped rotary damper with forward and backward movement of the furnace lid remover is provided by disposing a limit switch or the like at a forward and backward position of the furnace lid remover and interlocking with ON and OFF of the limit switch. What is necessary is just to rotate.

The vertical wall-shaped slide damper constituting the kiln opening hood can be smoothly slid by suspending the upper part and guiding the lower part by a guide rail via a roller. The mechanism for moving the vertical wall-shaped slide damper forward and backward is not particularly limited as long as it can advance and retreat the vertical wall-shaped slide damper, but a cylinder system, a rack and pinion system, a screw shaft system, and the like are suitable.

The operation of the vertical wall-shaped slide damper is performed when the vertical wall-shaped slide damper seals the side of the kiln opening.
After the extruder is moved in the direction of the furnace group to position the furnace lid detacher in the carbonization chamber where the furnace is removed, the slide damper is advanced before the furnace lid is detached and brought into contact with the surface of the backstay. Further, when the vertical wall-shaped slide damper seals the front of the kiln opening, it is moved forward and backward so as not to interfere with the furnace lid attaching / detaching machine in conjunction with the forward / backward movement of the furnace lid attaching / detaching machine. Before the furnace lid removal machine advances, the vertical wall-shaped slide damper is retracted to open the kiln opening. In the forward state of the furnace lid detacher, the vertical wall-shaped slide damper is in a semi-open state, but if the cross-sectional area of the furnace lid detacher occupies a large percentage of the opening sectional area of the vertical wall-shaped slide damper, The structure is such that air suction from the rear part of the furnace lid detacher can be largely suppressed, and the state can be made substantially sealed. The vertical wall-shaped slide damper is linked with the forward and backward movement of the furnace lid remover by providing a limit switch at the forward and backward position of the furnace lid remover, and moving forward and backward in conjunction with ON and OFF of the limit switch. It should be done.

By providing an opening at the upper part of the kiln opening hood so as to be located directly below the dust collecting hood of the furnace lid detacher, dust and smoke leaking from the kiln opening when the furnace lid is attached and detached are as follows.
The dust passes through the upper opening of the kiln opening hood and is effectively collected by the kiln dust collecting hood.

The closed hood of the extrusion rack beam of the two-point coke extruder according to the present invention is a fixed hood having a flat rectangular shape that covers the periphery of the tip of the extrusion rack beam and the range of the extrusion rack beam passing through the mouth of the kiln. A vertical wall-shaped moving hood provided with a sealing material at a movable front and rear end which is movable toward and away from a back stay disposed on a tip side wall portion of the hood;
A rotary damper provided so that the kiln opening side of the fixed hood can be hermetically closed, and an opening allowing passage of an extrusion beam provided on the reverse kiln opening side of the fixed hood, so as not to interfere with the extrusion operation. Have been.

The mechanism for moving the vertical wall-shaped moving hood of the extrusion rack beam closed hood is not particularly limited, as long as the vertical wall-shaped moving hood can be moved forward and backward so that the sealing material at the tip can contact the back stay. It is common to use a system, a rack and pinion system, or the like. The rotating mechanism of the rotary damper for closing the kiln opening side of the fixed hood may be any type as long as the rotary damper can be turned 90 ° to seal the kiln opening side of the fixed hood. A rack and pinion method is suitable. The rotation direction may be any of a vertical direction and a horizontal direction.

The operation of the vertical wall-shaped moving hood and the rotary damper of the extrusion rack beam closed hood is performed by running a two-point coke extruder to place the extrusion rack beam in front of the kiln opening of the carbonization chamber from which the furnace lid has been removed. After being positioned, the movable hood having a vertical wall shape is advanced, and the tip sealing material is brought into contact with the front of the backstay to seal the hood. At this time, the rotary damper is in the closed state, and the kiln opening both sides are moved by the vertical wall-shaped moving hood.
The extrusion rack beam side is held in a sealed state by a fixed hood and a rotary damper. Next, the rotation damper is rotated and opened in conjunction with the forward movement of the push-out rack beam to allow the push-out rack beam to pass. In this case, since the reverse kiln mouth side of the fixed hood is sealed leaving an opening allowing the extrusion rack beam to pass, the kiln mouth is held in a substantially sealed state by the extrusion rack beam sealing hood. You. Also, when the ram head passes the rotary damper position when the extrusion rack beam is retracted, the rotary damper is rotated to seal the kiln opening side of the fixed hood.

An opening is provided in the upper part of the vertical wall-shaped moving hood of the extrusion rack beam closed hood so as to be located immediately below the extrusion dust collecting hood, so that dust and smoke leaking from the kiln mouth during coke extrusion are reduced. Then, it passes through the opening of the upper part of the moving hood of the extrusion rack beam closed hood, and the extrusion dust collecting hood is configured to effectively collect dust with a small air volume.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS.
It will be described based on. FIG. 1 is a schematic plan view of an extruder-side kiln closing apparatus in which a kiln-opening hood seals the side of the kiln opening by a rotating damper and the front of the kiln opening by a slide damper. FIG. 3 is a rear view of the extruder-side kiln opening sealing device.

1 to 3, reference numeral 1 denotes a coke oven, 2
Reference numeral 3 denotes an extruder which extrudes red-hot coke which has been carbonized from the coking chamber 2; The extruder 4 is provided with a furnace lid detacher 5 for attaching and detaching the furnace lid 3 and an extrusion rack beam 6 for extruding red-hot coke from the carbonization chamber 2, for example, at intervals of five kilns. Although not shown, the extruder 4 is equipped with a furnace lid cleaner for the furnace lid 3 from which the furnace lid 3 is detached, a sheet cleaner for cleaning sheet metal in a furnace opening from which the furnace lid 3 is detached, and the carbonization chamber 2. A leveler is provided to level the top of the coal.

Numeral 11 denotes a vertical wall-shaped rotary damper 13 having a sealing material 12 at the tip provided on the kiln opening side of the furnace lid attaching / detaching machine 5.
The cylinder 15 is mounted on the vertical end of the vertical wall-shaped rotary damper 13 by operating the cylinder 15 with a kiln opening closed hood in which a vertical U-shaped slide damper 14 adjacent to the rotary damper 13 forms a U-shaped plane. When the rotating shaft 16 is rotated by 90 °, the sealing material 12 at the tip comes into contact with the side surface of the back stay 17 at the kiln opening, and the cylinder 18 is operated to form a vertical wall perpendicular to the rotating damper 13. When the slide damper 14 is sealed, the kiln opening of the carbonization chamber 2 for attaching and detaching the furnace lid 3 can be sealed from the bottom to the top. In addition, a detachable dust collecting hood 19 is provided above the vertical wall-shaped rotating damper 13.
An opening 20 is provided immediately below the furnace lid 3.
All dusts and gases generated when desorbing the gas are raised in the kiln closed hood 11, pass through the opening 20 and are collected by the desorber dust collecting hood 19.

Reference numeral 21 denotes an extrusion rack beam sealed hood, which is a rectangular fixed rectangular hood 2 surrounding the tip of the extrusion rack beam 6 and the passage of the extrusion rack beam 6 on the kiln opening side.
2, a movable hood 24 having a vertical wall shape having a sealing material 23 at the tip provided on the tip side wall of the fixed hood 22, and a rotary damper 25. An opening that allows the extrusion rack beam 6 to pass is provided on the reverse kiln opening side of the fixed hood 22. In addition, the vertical wall-shaped moving hood 24 is
6, the sealing material 23 at the tip abuts against the backstay 17 at the kiln opening, and the cylinder 27 is operated to close the rotary damper 25. The mouth can be sealed from the bottom to the top by the extrusion rack beam sealing hood 21. Also,
An opening 29 is provided in the upper part of the vertical wall-shaped moving hood 24 of the extrusion rack beam sealed hood 21 so as to be located immediately below a kiln-exiting dust collecting hood 28, and all dust and gas generated during coke extrusion are extruded. It is configured to rise inside the rack beam closed hood 21, pass through the opening 29, and collect dust by the kiln discharge dust hood 28.

With the above-described configuration, when the coke is discharged from the kiln, the extruder 4 is moved to position the furnace lid desorber 5 in the coking chamber 2 where the coke is discharged. Next, the cylinder 15 is operated to rotate the rotation shaft 16 of the vertical wall-shaped rotation damper 90 by 90 °, and the sealing material 12 at the tip is brought into contact with the side surface of the back stay 17 at the kiln opening. At this point,
The vertical wall-shaped slide damper 14 is in a fully opened state.
Next, the cylinder 18 is operated to close the vertical wall-shaped slide damper 14 to the extent that it does not interfere with the furnace lid detacher 5 in accordance with the operation of moving the furnace lid remover 5 forward. At this time,
Although the vertical wall-shaped slide damper 14 is in a semi-open state, the cross-sectional area of the furnace lid detacher 5 occupying a large proportion of the opening cross-sectional area of the vertical wall-shaped slide damper 14 is set to a high ratio.
The air intake from the rear is greatly suppressed.

Next, the furnace lid detacher 5 is operated to detach the furnace lid 3 in the coking chamber 2, and the cylinder 18 is operated in accordance with the backward movement of the furnace lid remover 5 to operate the vertical wall-shaped slide damper. 14 is closed and the kiln opening is closed by the kiln opening sealing hood 11. Therefore, all dust and gas generated from the kiln mouth rise in the kiln mouth closed hood 11, pass through the opening 20, and are collected by the desorber dust collecting hood 19. During the attachment / detachment work of the furnace lid 3, the kiln closed hood 1
1 is always sealed or semi-sealed to greatly reduce the diffusion of gas in the furnace from the kiln opening and the entrainment of surrounding air, as well as the reduction of dust and smoke to the surroundings. The dust can be collected by the desorber dust collecting hood 19 with the suction air volume significantly reduced from the opening 20 of the kiln opening hood 11.

When the operation of detaching the furnace lid 3 is completed, the cylinder 15 is operated to rotate the rotating shaft 16 of the vertical wall-shaped rotating damper 13 by 90 ° in the opposite direction, and then the extruder 4 is moved. The extruder rack beam 6 is moved and aligned with the carbonization chamber 2 from which the furnace lid 3 has been removed. Next, the vertical wall-shaped moving hood 24 of the extrusion rack beam sealing hood 21 surrounding the tip of the extrusion rack beam 6 and the range through which the extrusion rack beam 6 passes on the kiln opening side is advanced by operating the cylinder 26, The sealing material 23 is brought into contact with the front of the back stay 17. At this time, the rotation damper 25 is in the closed state,
In front of the kiln mouth, a vertical wall-shaped moving hood 24 and fixed hood 22
Is closed by the rotary damper 25.

Next, the rotary damper 25 is rotated and opened by operating the cylinder 27 in accordance with the forward movement of the extrusion rack beam 6, and red hot coke is extruded from the carbonization chamber 2 by the extrusion rack beam 6. . During this extrusion work, the rotary damper 25 is in an open state, but the reverse kiln mouth side of the fixed hood 22 is closed except for an opening that allows the extrusion rack beam 6 to pass therethrough. The suction of air from the opening opposite to the mouth is largely suppressed, and the state is substantially sealed. Therefore, all the dust and smoke generated from the kiln mouth when the red hot coke is extruded rises inside the movable hood 24, passes through the upper opening 29, and is collected by the kiln discharge dust hood 28.

When the extrusion rack beam 6 is retracted after the extrusion is completed, the extrusion rack beam 6 is
, The rotary damper 25 is closed by operating the cylinder 27, and the front of the kiln is closed by the movable hood 24 having a vertical wall shape and the rotary damper 25 of the fixed hood 22. For this reason, during the operation of extruding the red hot coke, the stationary hood 22, the vertical wall-shaped moving hood 24, and the rotary damper 25 are used to seal or semi-close the gas, and the gas in the furnace is diffused from the furnace port. In addition, since the entrainment of the surrounding air is greatly reduced, and the generation of dust and smoke to the periphery is also reduced, the kiln discharge dust is significantly reduced from the opening 29 of the moving hood 24 having a vertical wall shape. Dust can be collected by the hood 28.

Next, when the retraction of the extrusion rack beam 6 is completed, the cylinder 26 is operated to move the vertical wall-shaped moving hood 2.
After retreating the extruder 4, the extruder 4 is run, and the furnace lid detacher 5 is aligned with the carbonized chamber 2 where the extrusion has been completed. Next, prior to the mounting operation of the furnace lid 3, the rotating shaft 16 of the vertical wall-shaped rotating damper 13 is rotated by 90 ° by operating the cylinder 15, and the sealing material 12 at the tip is moved to the back stay 17 of the kiln opening. Make contact with the side. At this point, the vertical wall-shaped slide damper 14 is fully opened. Next, the cylinder 18 is operated to close the vertical wall-shaped slide damper 14 to such an extent that it does not interfere with the furnace lid detacher 5 in accordance with the operation of the furnace lid detacher 5 moving forward. At this time, the vertical wall-shaped slide damper 14 is in a semi-open state, but the cross-sectional area of the furnace lid detacher 5 occupying a large percentage of the opening cross-sectional area of the vertical wall slide damper 14 is increased. The suction of air from the rear is greatly suppressed.

Next, after the furnace lid 3 held by operating the furnace lid detacher 5 is attached to the kiln opening, the furnace lid detacher 5 is retracted to a fixed position. Next, the cylinder 15 is operated to rotate the rotation shaft 16 of the vertical wall-shaped rotary damper 13 by 90 ° in the opposite direction to the above, so that the vertical wall-shaped rotary damper 13 is detached from the side of the back stay 17, The extruder 4 is moved toward the carbonization chamber 2 where the extruding operation is completed, and the extruding operation is completed.

Therefore, when the furnace lid, which generates a lot of dust and smoke, is attached to and removed from the extruder when the coke oven is taken out of the furnace, and when the coke is extruded, the front of the mouth of the extruder is closed by the kiln mouth hood 11 or the extrusion rack beam hood. 21 is always sealed or semi-sealed to greatly reduce the diffusion of gas in the furnace from the kiln opening and the entrainment of surrounding air, as well as to reduce dust and smoke to the surrounding area. Dust may be collected from the opening 20 at the upper part of the vertical wall-shaped rotary damper 13 or the opening 29 at the upper part of the vertical wall-shaped moving hood 24 with a significantly smaller suction air volume.

[0039]

According to the first aspect of the present invention, the method for sealing the mouth of the extruder at the time of taking out the coke oven according to the first aspect of the present invention is to rotate the mouth of the furnace lid detacher of the two-point extruder vertically at the vertical end. The furnace is sealed by a vertical wall-shaped rotary damper rotatable about an axis and a vertical wall-shaped slide damper adjacent to the rotary damper, which is closed by a kiln opening hood forming a flat U-shape. The front of the kiln mouth when the lid is removed can be almost sealed with a kiln opening hood, and if a kiln opening dust hood is provided directly above the upper opening of the kiln opening hood, the furnace lid removal work before and after coke extrusion It is possible to effectively collect dust from the kiln opening with a very small air volume. In addition, between the tip of the extrusion rack beam and the back stay, an opening that allows the passage of the extrusion beam on the reverse kiln mouth side and a rotary damper on the tip kiln mouth side,
By being sealed with an extrusion rack beam sealing hood consisting of a fixed hood that covers the passage area of the extrusion rack beam on the kiln opening side, and a movable hood that can move toward and away from the back stay provided on the kiln opening side of the fixed hood. During coke extrusion and extrusion rack beam pullback, the periphery of the extrusion rack beam and its kiln opening side are almost completely sealed by the extrusion rack beam sealing hood, and a kiln opening dust collecting hood is provided immediately above the upper opening of the moving hood. If provided, dust generated from the kiln mouth during coke extrusion and pulling out the extrusion rack beam can be effectively collected with an extremely small air volume.

According to the second aspect of the present invention, the extruder-side kiln closing device for taking out a coke kiln according to the second aspect of the present invention has a vertical end vertically set by a rotating mechanism before a kiln opening of a furnace lid detacher of a two-point extruder. A vertical wall-shaped rotation damper rotatable around the rotation axis,
A kiln opening hood is provided adjacent to the rotary damper and has a vertical U-shaped slide damper slidable by an advance / retreat mechanism to form a flat U-shape. By installing a kiln opening dust hood just above the upper opening of the kiln opening hood, dust from the kiln opening and removing the furnace lid before and after coke extrusion and dusting from the kiln opening Dust can be collected effectively from the upper opening of the closed hood by the kiln dust collecting hood with an extremely small air volume. Further, a flat rectangular fixed hood that covers the periphery of the tip of the extrusion rack beam and the passage area of the extrusion rack beam on the kiln opening side, and a movable front and rear that can be moved toward and away from the back stay on the tip side wall of the fixed hood. An extrusion rack beam comprising a vertical wall-shaped moving hood, a rotary damper capable of sealing the kiln opening side of the fixed hood, and an opening provided on the reverse kiln opening side of the fixed hood and allowing passage of an extrusion beam. By disposing the closed hood, dust and smoke from the kiln opening when the extruded rack beam moves forward and backward can be almost completely sealed by the extruded rack beam closed hood. The extruded dust collecting hood is installed in the upper opening of the hood, so that dust generated from the kiln opening when coke is extruded and when the extruded rack beam is pulled back is extruded by the It can be effectively dust collection in very small air volume by extrusion dust hood from the closed hood upper opening.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an extruder-side kiln opening device in which a kiln opening hood of the present invention has a structure in which a kiln side is sealed by a rotary damper and a front of the kiln is sealed by a slide damper.

FIG. 2 is a plan view of an extruder-side kiln opening sealing device of the present invention.

FIG. 3 is a rear view of the extruder-side kiln closing device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coke oven 2 Carbonization chamber 3 Furnace lid 4 Extruder 5 Furnace lid detachment machine 6 Extrusion rack beam 11 Kiln opening sealing hood 12, 23 Sealing material 13 Kiln opening rotation damper 14 Slide damper 15, 18, 26, 27 Cylinder 16 times Driving axis 17 Back stay 19 Desorption machine dust collecting hood 20, 29 Opening 21 Extrusion rack beam sealed hood 22 Fixed hood 24 Moving hood 25 Rotary damper 28 Kiln dust collecting hood

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 11, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Method and apparatus for sealing a kiln opening on the extruder side when taking out a coke kiln

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of a kiln by a two-point coke oven extruder in which the extruder position is different between a furnace lid attaching / detaching operation and a coke extruding operation. The present invention relates to a method and an apparatus for sealing a mouth of an extruder for greatly reducing smoke generation.

[0002]

2. Description of the Related Art A coke oven has a heat storage chamber at a lower part of a furnace body, and a combustion chamber and a carbonization chamber are alternately arranged at an upper part of the heat storage chamber. Coking coal, which is a coke raw material, is charged into a carbonization chamber via a coal-carrying car movably mounted on a rail laid on a coke oven, and air preheated in the animal heat chamber and poor gas or the air The combustion heat generated by the combustion of the gas and the rich gas in the combustion chamber is heated and carbonized through the furnace wall to form coke. The coke that has been carbonized is loaded from a carbonization chamber onto a coke bucket truck through an extruder rack beam of an extruder through a door of a coke guide truck, dry-fire extinguished, and then supplied to a blast furnace.

Recently, when the coke temperature reaches 700 ° C. to 900 ° C. in the coking chamber of the coke oven, the coke is discharged from the kiln, the coke is charged into the pre-chamber of the dry fire extinguishing system, and air is introduced into the pre-chamber. Introduces gas generated from coke in the pre-chamber
There has been proposed a method for producing coke by heating to 0 ° C. or higher and terminating the dry distillation (Japanese Patent Application Laid-Open No. 2-194087).

[0004] The extruding operation of the coke after the carbonization is an operation that frequently generates dust and smoke. In particular, the coke temperature disclosed in Japanese Patent Application Laid-Open No.
When the kiln is discharged when the temperature reaches ℃ to 900 ° C, compared to the case where the coke that has been dry-distilled is discharged,
Since the coke oven gas is being generated during the carbonization, a very large amount of dust and gas leaks from the kiln opening into the atmosphere.

On the coke oven extruder side, the coke oven gas in the coking chamber is leaked while the oven lid is removed by the detacher during the operation of attaching and detaching the oven lid and moved to the oven lid cleaning position. In this case, the coke in the kiln mouth collapses and dust is generated. Also, dust is generated when the furnace lid is cleaned by the furnace lid cleaning device. And the most quantitatively,
Gas and dust during coke extrusion work while red hot coke is being extruded by an extrusion rack beam from the carbonization chamber with the furnace lid removed.

Further, after extruding the red hot coke, the furnace lid is attached, and coking coal is again charged from the charcoal truck into the carbonization chamber.
The process of opening the leveling opening of the furnace lid and leveling the top of the coking coal with the leveler of the extruder, or opening the leveling opening and cleaning the leveling port and the leveling lid There is dusting in the process.
Dispersing such dust into the atmosphere not only degrades the working environment, but also scatters around the surrounding area and poses a serious problem in preventing pollution.

For this reason, various measures have been taken to prevent dust and smoke from being produced around the mouth of the coking chamber of the coke oven. However, the effect of reducing dust and smoke is not sufficient. Further improvement is desired. In particular, the device for preventing dust and smoke from the kiln mouth on the extruder side of the coke oven is behind the dust prevention equipment from coke guide trucks, coke bucket trucks, etc. There is a need for effective dust collection measures.

Conventionally, as a countermeasure against dust collection around the extruder-side kiln opening, a dust-collecting hood is provided on the extruder so as to cover the upper part of the outside of the kiln opening of the coke oven. A dust collecting device provided with a movable hood having a width substantially the same as that of a kiln mouth which is close to and above the upper part thereof (see Japanese Patent Application Laid-Open No. 50-3090).
No. 3), a dust collecting hood is provided above the kiln opening between the back stays, and a dust collecting device that covers the kiln opening during the coke extrusion operation with a windproof hood that blocks the ceiling and three sides (Japanese Patent Laid-Open No. 52-425).
No. 03), a dust collecting apparatus provided with a dust collecting hood including all dust generating positions above a space between an extruder and a coke oven (Japanese Patent Application Laid-Open No. 53-124508), a roof and There has been proposed a dust collecting hood for an extruder provided with a dust collecting hood having a side wall and entirely covering the dust generating portion of the extruder itself in front of the cab (Japanese Utility Model Application Laid-Open No. 54-120568).

The above-mentioned JP-A-50-30903, JP-A-52-42503, and JP-A-53-124508
None of the dust collection measures disclosed in Japanese Unexamined Patent Application Publication No. Hei. As an extruder-side kiln port dust-collecting measure to solve these problems, the entire dust-collecting hood covers all the dust-generating points of the extruder at once.
A local dust collection system is provided for each dust generation point, and a shutter is provided that slides around the coke oven side opening of the entire dust collection hood to seal the space between the dust collector and the back stay, and collects the air volume of the local dust collection system as a whole. There has been proposed a method (Japanese Patent Laid-Open No. 6-340880) of collecting dust by changing it in accordance with the operation of a device that generates dust in a dust hood.

[0010]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 6-340.
The dust collection countermeasure disclosed in Japanese Patent Publication No. 880 discloses a system in which the entire dust collecting hood covers all the dust-generating points of the extruder at once, prevents dust from scattering into the atmosphere due to cross wind, etc., and generates dust in the entire dust collecting hood. Dust is collected by changing the air volume of the local dust collection system in accordance with the operation of equipment that generates dust in the entire dust collection hood. Since the dust is covered with the hood, the locally generated dust inevitably diffuses in the entire dust collection hood, and effective dust collection cannot be performed. In other words, the amount of invalid air at the time of dust collection increases.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art, to significantly suppress the generation of dust and smoke from the mouth of the coke oven extruder, and to collect dust during coke extrusion and before and after coke extrusion. It is an object of the present invention to provide a method and an apparatus for sealing an extruder-side kiln opening at the time of taking out of a coke oven kiln, which can effectively perform the process.

[0012]

According to the first aspect of the present invention, there is provided a method for sealing a mouth of an extruder at the time of taking out a coke kiln according to the first aspect of the present invention. A coke oven extruder side furnace mouth sealing method,
A vertical wall-shaped rotary damper rotatable between a kiln opening side and a back stay of a furnace lid detacher and a vertical axis of which is a vertical axis, and a vertical wall adjacent to the rotary damper. An opening and a tip that allow the passage of the extrusion rack beam between the tip of the extrusion rack beam and the backstay, and the reverse kiln mouth side, while sealing with the kiln mouth sealing hood that forms a flat U shape with the slide damper of consists of a fixed hood kiln port side cover kiln inlet side passing range of extrusion rack beam has a rotation damper, a moving food to set only bar Kkusute kiln inlet side of the fixed hood moves separably It is to be sealed with an extrusion rack beam sealing hood.

[0013] As described above, the kiln opening side of the furnace lid detacher of the two-point coke oven extruder is formed with a vertical U-shaped rotating damper and a vertical wall sliding damper to form a flat U-shape. By closing the furnace lid before and after coke extrusion and mounting work by sealing with a closed hood,
It is almost sealed with a kiln opening hood, and if a kiln opening dust collecting hood is provided just above the opening at the top of the kiln opening hood, dust generation from the kiln opening during furnace lid removal work before and after coke extrusion is extremely small. Dust can be collected effectively by the air volume. Also,
A fixed hood having an opening for allowing the passage of the extruded beam on the reverse kiln mouth side and a rotating damper on the tip kiln mouth side, and a kiln mouth side of the fixed hood are provided between the tip of the extrusion rack beam and the back stay. only by sealing an extruded rack beams sealed hood consisting of a moving hood moves separably to bar Kkusute, during retraction and during extrusion rack beam coke extrusion, kiln inlet side periphery of the extruded rack beam, the extrusion It is sealed with a rack beam sealing hood,
If a kiln mouth dust collecting hood is provided directly above the opening at the upper part of the moving hood, dust generated from the kiln mouth during coke extrusion and pulling out the extrusion rack beam can be effectively collected with an extremely small air volume. it can.

Further, in the extruder-side kiln opening sealing device at the time of taking out the coke kiln according to the second aspect of the present invention, a two-point coke oven extruder in which the extruder positions are different between a furnace lid removal operation and a coke extrusion operation. A vertical wall-shaped rotary damper whose vertical end is rotatable around a vertical rotation axis by a rotation mechanism in front of the furnace port of the furnace lid detacher, A vertical wall-shaped slide damper adjacent to the rotary damper and slidable by the advance / retreat mechanism has a kiln-opening hood that forms a flat U-shape. a planar rectangular fixed hood covering and a vertical wall-shaped moving hood retractably to move separably to arranged to bar Kkusute the distal wall portion of the fixed hood, the kiln outlet side of the fixed hood A rotary damper that can be sealed Disposed extrusion rack beams sealed hood consisting of an opening to allow passage of the rack beam setting only output push <br/> Conversely kiln inlet side of said fixed hood, the kiln port sealing hood top opening and the extrusion rack Kiln mouth dust collecting hoods are to be provided directly above the upper opening of the moving hood of the beam sealed hood.

As described above, a kiln opening in which a vertical U-shaped rotary damper and a vertical wall slide damper form a flat U-shape before the kiln opening of the furnace lid detacher of the two-point coke oven extruder. By providing a closed hood, the furnace lid can be almost completely sealed around the furnace lid detacher and furnace opening hood before and after the coke extrusion, before and after coke extrusion, and the slide damper can be closed after the furnace lid is removed. For example, since the kiln mouth can be completely sealed with the kiln opening hood, the kiln dust collecting hood arranged in the upper opening of the kiln opening hood can be used to remove the furnace lid before and after coke extrusion, from the kiln opening at the time of mounting work. Dust can be collected effectively with an extremely small air volume. The extrusion rack beam and the plane rectangular fixed hood tip covering the kiln inlet-side passage range around the extruded rack beam, retractably vertical wall abutting the disposed to bar Kkusute the distal wall portion of the fixed hood Jo and moving food, extruded rack consisting of the fixed hood rotation damper provided sealably kiln inlet side of the openings to allow the passage of the fixed output setting only push the opposite kiln inlet side of the hood beam When the coke is extruded and the extrusion rack beam is pulled back, the kiln opening is closed by the movable hood and the fixed hood in contact with the backstay, and the beam sealing hood is located just above the upper opening of the movable hood of the extrusion rack beam sealing hood. The dust collection hood installed in the kiln effectively collects dust from the kiln mouth when extruding coke and pulling back the extrusion rack beam with an extremely small air volume. Rukoto can.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A closed mouth hood provided on the open mouth side of a furnace lid detacher of a two-point coke extruder according to the present invention has a vertically rotating shaft whose vertical end is vertically rotated by a rotating mechanism. And a vertical wall-shaped rotary damper rotatable as a movable member, and a vertical wall-shaped slide damper adjacent to the rotary damper and slidable by an advance / retreat mechanism. As a combination of a vertical wall-shaped rotary damper and a double-sided vertical wall-shaped slide damper, the vertical wall-shaped rotary dampers on both sides abut against the side of the back stay to seal the side of the kiln opening, The combination of a slide damper that seals the front of the kiln mouth, or a vertical wall-shaped slide damper on both sides abuts the front of the backstay to seal the side of the kiln mouth, and a vertical wall-shaped rotating damper on both sides sets the front of the kiln mouth Can be formed into a flat U-shape by adopting a combination that seals.

A kiln opening hood of a combination in which vertical wall-like rotary dampers on both sides abut against the side of the back stay to seal the side of the kiln opening, and a double-walled vertical wall-shaped slide damper seals the front of the kiln opening. In this case, the base end of the vertical wall-shaped rotary damper is used as a rotatable axis, and a seal material is provided at a portion of the distal end that abuts against the backstay side to improve the adhesion with the backstay side. One end of the double-sided vertical wall-shaped slide damper is brought into contact with a tip seal member provided on the other side, thereby improving the adhesion of the double-sided vertical wall-shaped slide damper. In addition, in the case of a kiln-opening hood in which a vertical wall-shaped slide damper seals the side of the kiln opening and vertical wall-shaped rotating dampers on both sides seal the front of the kiln opening, the tip of the vertical wall-shaped slide damper is used. A seal material is provided in contact with the back stay surface to improve the adhesion to the back stay, and the vertical wall-shaped rotation dampers on both sides are provided with a seal material at the overlapping portion at the tip, and a vertical wall-shaped rotation damper is provided. To improve the adhesion.

As a rotating mechanism of the vertical wall-shaped rotary damper, a vertical end of the vertical wall-shaped rotary damper is rotated about a vertical rotation axis to abut on a side portion of the back stay or The mechanism is not particularly limited, as long as the mutual tips are overlapped with each other, but a mechanism for rotating the rotating shaft of the vertical wall-shaped rotating damper by a cylinder method, a rack and pinion method, or the like is suitable.

The operation of the vertical wall-shaped rotary damper is performed when the vertical wall-shaped rotary damper seals the front side of the kiln opening.
After the extruder is moved in the direction of the furnace group to position the furnace lid detacher in the carbonization chamber where the furnace is removed, the extruder is rotated before the furnace lid is detached and brought into contact with the side of the backstay. When the vertical wall-shaped rotating damper seals the front of the kiln opening, it is rotated in conjunction with the forward and backward movement of the furnace lid detacher so as not to interfere with the furnace lid detacher. When the vertical wall-shaped rotating damper seals the front of the furnace opening, the front of the furnace opening is opened before the furnace lid remover advances, and the vertical wall-shaped rotating Although the damper is rotated to be in a semi-open state, if the cross-sectional area of the furnace lid detacher relative to the opening cross-sectional area of the vertical wall-shaped rotary damper is set to a high ratio, air is sucked from the rear part of the furnace lid detacher. Can be largely suppressed, and a substantially sealed state can be obtained. Linkage of this vertical wall-shaped rotary damper with forward and backward movement of the furnace lid remover is provided by disposing a limit switch or the like at a forward and backward position of the furnace lid remover and interlocking with ON and OFF of the limit switch. What is necessary is just to rotate.

The vertical wall-shaped slide damper constituting the kiln opening hood can be smoothly slid by suspending the upper part and guiding the lower part by a guide rail via a roller. The mechanism for moving the vertical wall-shaped slide damper forward and backward is not particularly limited as long as it can advance and retreat the vertical wall-shaped slide damper, but a cylinder system, a rack and pinion system, a screw shaft system, and the like are suitable.

The operation of the vertical wall-shaped slide damper is performed when the vertical wall-shaped slide damper seals the side of the kiln opening.
After the extruder is moved in the direction of the furnace group to position the furnace lid detacher in the carbonization chamber where the furnace is removed, the slide damper is advanced before the furnace lid is detached and brought into contact with the surface of the backstay. Further, when the vertical wall-shaped slide damper seals the front of the kiln opening, it is moved forward and backward so as not to interfere with the furnace lid attaching / detaching machine in conjunction with the forward / backward movement of the furnace lid attaching / detaching machine. Before the furnace lid removal machine advances, the vertical wall-shaped slide damper is retracted to open the kiln opening. In the forward state of the furnace lid detacher, the vertical wall-shaped slide damper is in a semi-open state, but if the cross-sectional area of the furnace lid detacher occupies a large percentage of the opening sectional area of the vertical wall-shaped slide damper, The structure is such that air suction from the rear part of the furnace lid detacher can be largely suppressed, and the state can be made substantially sealed. The vertical wall-shaped slide damper is linked with the forward and backward movement of the furnace lid remover by providing a limit switch at the forward and backward position of the furnace lid remover, and moving forward and backward in conjunction with ON and OFF of the limit switch. It should be done.

By providing an opening at the upper part of the kiln opening hood so as to be located directly below the dust collecting hood of the furnace lid detacher, dust and smoke leaking from the kiln opening when the furnace lid is attached and detached are as follows.
The dust passes through the upper opening of the kiln opening hood and is effectively collected by the kiln dust collecting hood.

The closed hood of the extrusion rack beam of the two-point coke extruder according to the present invention is a fixed hood having a flat rectangular shape that covers the periphery of the tip of the extrusion rack beam and the range of the extrusion rack beam passing through the mouth of the kiln. A vertical wall-shaped moving hood provided with a sealing material at a movable front and rear end which is movable toward and away from a back stay disposed on a tip side wall portion of the hood;
Wherein the rotating damper kiln inlet side of the fixed hood is provided so as to be sealed and made from an opening to permit passage of the opposite kiln outlet side set only push out beams of the fixed hood, so as not to cause trouble in the extrusion operations It is configured.

The mechanism for moving the vertical wall-shaped moving hood of the extrusion rack beam closed hood is not particularly limited, as long as the vertical wall-shaped moving hood can be moved forward and backward so that the sealing material at the tip can contact the back stay. It is common to use a system, a rack and pinion system, or the like. The rotating mechanism of the rotary damper for closing the kiln opening side of the fixed hood may be any type as long as the rotary damper can be turned 90 ° to seal the kiln opening side of the fixed hood. A rack and pinion method is suitable. The rotation direction may be any of a vertical direction and a horizontal direction.

The operation of the vertical wall-shaped moving hood and the rotary damper of the extrusion rack beam closed hood is performed by running a two-point coke extruder to place the extrusion rack beam in front of the kiln opening of the carbonization chamber from which the furnace lid has been removed. After being positioned, the movable hood having a vertical wall shape is advanced, and the tip sealing material is brought into contact with the front of the backstay to seal the hood. At this time, the rotary damper is in the closed state, and the kiln opening both sides are moved by the vertical wall-shaped moving hood.
The extrusion rack beam side is held in a sealed state by a fixed hood and a rotary damper. Next, the rotation damper is rotated and opened in conjunction with the forward movement of the push-out rack beam to allow the push-out rack beam to pass. In this case, since the reverse kiln mouth side of the fixed hood is sealed leaving an opening allowing the extrusion rack beam to pass, the kiln mouth is held in a substantially sealed state by the extrusion rack beam sealing hood. You. Also, when the ram head passes the rotary damper position when the extrusion rack beam is retracted, the rotary damper is rotated to seal the kiln opening side of the fixed hood.

An opening is provided in the upper part of the vertical wall-shaped moving hood of the extrusion rack beam closed hood so as to be located immediately below the extrusion dust collecting hood, so that dust and smoke leaking from the kiln mouth during coke extrusion are reduced. Then, it passes through the opening of the upper part of the moving hood of the extrusion rack beam closed hood, and the extrusion dust collecting hood is configured to effectively collect dust with a small air volume.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS.
It will be described based on. FIG. 1 is a schematic plan view of an extruder-side kiln closing apparatus in which a kiln-opening hood seals the side of the kiln opening by a rotating damper and the front of the kiln opening by a slide damper. FIG. 3 is a rear view of the extruder-side kiln opening sealing device.

1 to 3, reference numeral 1 denotes a coke oven, 2
Reference numeral 3 denotes an extruder which extrudes red-hot coke which has been carbonized from the coking chamber 2; The extruder 4 is provided with a furnace lid detacher 5 for attaching and detaching the furnace lid 3 and an extrusion rack beam 6 for extruding red-hot coke from the carbonization chamber 2, for example, at intervals of five kilns. Although not shown, the extruder 4 is equipped with a furnace lid cleaner for the furnace lid 3 from which the furnace lid 3 is detached, a sheet cleaner for cleaning sheet metal in a furnace opening from which the furnace lid 3 is detached, and the carbonization chamber 2. A leveler is provided to level the top of the coal.

Numeral 11 denotes a vertical wall-shaped rotary damper 13 having a sealing material 12 at the tip provided on the kiln opening side of the furnace lid attaching / detaching machine 5.
The cylinder 15 is mounted on the vertical end of the vertical wall-shaped rotary damper 13 by operating the cylinder 15 with a kiln opening closed hood in which a vertical U-shaped slide damper 14 adjacent to the rotary damper 13 forms a U-shaped plane. When the rotating shaft 16 is rotated by 90 °, the sealing material 12 at the tip comes into contact with the side surface of the back stay 17 at the kiln opening, and the cylinder 18 is operated to form a vertical wall perpendicular to the rotating damper 13. When the slide damper 14 is sealed, the kiln opening of the carbonization chamber 2 for attaching and detaching the furnace lid 3 can be sealed from the bottom to the top. In addition, a detachable dust collecting hood 19 is provided above the vertical wall-shaped rotating damper 13.
An opening 20 is provided immediately below the furnace lid 3.
All dusts and gases generated when desorbing the gas are raised in the kiln closed hood 11, pass through the opening 20 and are collected by the desorber dust collecting hood 19.

Reference numeral 21 denotes an extrusion rack beam sealed hood, which is a rectangular fixed rectangular hood 2 surrounding the tip of the extrusion rack beam 6 and the passage of the extrusion rack beam 6 on the kiln opening side.
2, a movable hood 24 having a vertical wall shape having a sealing material 23 at the tip provided on the tip side wall of the fixed hood 22, and a rotary damper 25. An opening that allows the extrusion rack beam 6 to pass is provided on the reverse kiln opening side of the fixed hood 22. In addition, the vertical wall-shaped moving hood 24 is
6, the sealing material 23 at the tip abuts against the backstay 17 at the kiln opening, and the cylinder 27 is operated to close the rotary damper 25. The mouth can be sealed from the bottom to the top by the extrusion rack beam sealing hood 21. Also,
An opening 29 is provided in the upper part of the vertical wall-shaped moving hood 24 of the extrusion rack beam sealed hood 21 so as to be located immediately below a kiln-exiting dust collecting hood 28, and all dust and gas generated during coke extrusion are extruded. It is configured to rise inside the rack beam closed hood 21, pass through the opening 29, and collect dust by the kiln discharge dust hood 28.

With the above-described configuration, when the coke is discharged from the kiln, the extruder 4 is moved to position the furnace lid desorber 5 in the coking chamber 2 where the coke is discharged. Next, the cylinder 15 is operated to rotate the rotation shaft 16 of the vertical wall-shaped rotation damper 90 by 90 °, and the sealing material 12 at the tip is brought into contact with the side surface of the back stay 17 at the kiln opening. At this point,
The vertical wall-shaped slide damper 14 is in a fully opened state.
Next, the cylinder 18 is operated to close the vertical wall-shaped slide damper 14 to the extent that it does not interfere with the furnace lid detacher 5 in accordance with the operation of moving the furnace lid remover 5 forward. At this time,
Although the vertical wall-shaped slide damper 14 is in a semi-open state, the cross-sectional area of the furnace lid detacher 5 occupying a large proportion of the opening cross-sectional area of the vertical wall-shaped slide damper 14 is set to a high ratio.
The air intake from the rear is greatly suppressed.

Next, the furnace lid detacher 5 is operated to detach the furnace lid 3 in the coking chamber 2, and the cylinder 18 is operated in accordance with the backward movement of the furnace lid remover 5 to operate the vertical wall-shaped slide damper. 14 is closed and the kiln opening is closed by the kiln opening sealing hood 11. Therefore, all dust and gas generated from the kiln mouth rise in the kiln mouth closed hood 11, pass through the opening 20, and are collected by the desorber dust collecting hood 19. During the attachment / detachment work of the furnace lid 3, the kiln closed hood 1
1 is always sealed or semi-sealed to greatly reduce the diffusion of gas in the furnace from the kiln opening and the entrainment of surrounding air, as well as the reduction of dust and smoke to the surroundings. The dust can be collected by the desorber dust collecting hood 19 with the suction air volume significantly reduced from the opening 20 of the kiln opening hood 11.

When the operation of detaching the furnace lid 3 is completed, the cylinder 15 is operated to rotate the rotating shaft 16 of the vertical wall-shaped rotating damper 13 by 90 ° in the opposite direction, and then the extruder 4 is moved. The extruder rack beam 6 is moved and aligned with the carbonization chamber 2 from which the furnace lid 3 has been removed. Next, the vertical wall-shaped moving hood 24 of the extrusion rack beam sealing hood 21 surrounding the tip of the extrusion rack beam 6 and the range through which the extrusion rack beam 6 passes on the kiln opening side is advanced by operating the cylinder 26, The sealing material 23 is brought into contact with the front of the back stay 17. At this time, the rotation damper 25 is in the closed state,
In front of the kiln mouth, a vertical wall-shaped moving hood 24 and fixed hood 22
Is closed by the rotary damper 25.

Next, the rotary damper 25 is rotated and opened by operating the cylinder 27 in accordance with the forward movement of the extrusion rack beam 6, and red hot coke is extruded from the carbonization chamber 2 by the extrusion rack beam 6. . During this extrusion work, the rotary damper 25 is in an open state, but the reverse kiln mouth side of the fixed hood 22 is closed except for an opening that allows the extrusion rack beam 6 to pass therethrough. The suction of air from the opening opposite to the mouth is largely suppressed, and the state is substantially sealed. Therefore, all the dust and smoke generated from the kiln mouth when the red hot coke is extruded rises inside the movable hood 24, passes through the upper opening 29, and is collected by the kiln discharge dust hood 28.

When the extrusion rack beam 6 is retracted after the extrusion is completed, the extrusion rack beam 6 is
, The rotary damper 25 is closed by operating the cylinder 27, and the front of the kiln is closed by the movable hood 24 having a vertical wall shape and the rotary damper 25 of the fixed hood 22. For this reason, during the operation of extruding the red hot coke, the stationary hood 22, the vertical wall-shaped moving hood 24, and the rotary damper 25 are used to seal or semi-close the gas, and the gas in the furnace is diffused from the furnace port. In addition, since the entrainment of the surrounding air is greatly reduced, and the generation of dust and smoke to the periphery is also reduced, the kiln discharge dust is significantly reduced from the opening 29 of the moving hood 24 having a vertical wall shape. Dust can be collected by the hood 28.

Next, when the retraction of the extrusion rack beam 6 is completed, the cylinder 26 is operated to move the vertical wall-shaped moving hood 2.
After retreating the extruder 4, the extruder 4 is run, and the furnace lid detacher 5 is aligned with the carbonized chamber 2 where the extrusion has been completed. Next, prior to the mounting operation of the furnace lid 3, the rotating shaft 16 of the vertical wall-shaped rotating damper 13 is rotated by 90 ° by operating the cylinder 15, and the sealing material 12 at the tip is moved to the back stay 17 of the kiln opening. Make contact with the side. At this point, the vertical wall-shaped slide damper 14 is fully opened. Next, the cylinder 18 is operated to close the vertical wall-shaped slide damper 14 to such an extent that it does not interfere with the furnace lid detacher 5 in accordance with the operation of the furnace lid detacher 5 moving forward. At this time, the vertical wall-shaped slide damper 14 is in a semi-open state, but the cross-sectional area of the furnace lid detacher 5 occupying a large percentage of the opening cross-sectional area of the vertical wall slide damper 14 is increased. The suction of air from the rear is greatly suppressed.

Next, after the furnace lid 3 held by operating the furnace lid detacher 5 is attached to the kiln opening, the furnace lid detacher 5 is retracted to a fixed position. Next, the cylinder 15 is operated to rotate the rotation shaft 16 of the vertical wall-shaped rotary damper 13 by 90 ° in the opposite direction to the above, so that the vertical wall-shaped rotary damper 13 is detached from the side of the back stay 17, The extruder 4 is moved toward the carbonization chamber 2 where the extruding operation is completed, and the extruding operation is completed.

Therefore, when the furnace lid, which generates a lot of dust and smoke, is attached to and removed from the extruder when the coke oven is taken out of the furnace, and when the coke is extruded, the front of the mouth of the extruder is closed by the kiln mouth hood 11 or the extrusion rack beam hood. 21 is always sealed or semi-sealed to greatly reduce the diffusion of gas in the furnace from the kiln opening and the entrainment of surrounding air, as well as to reduce dust and smoke to the surrounding area. Dust may be collected from the opening 20 at the upper part of the vertical wall-shaped rotary damper 13 or the opening 29 at the upper part of the vertical wall-shaped moving hood 24 with a significantly smaller suction air volume.

[0039]

According to the first aspect of the present invention, the method for sealing the mouth of the extruder at the time of taking out the coke oven according to the first aspect of the present invention is to rotate the mouth of the furnace lid detacher of the two-point extruder vertically at the vertical end. The furnace is sealed by a vertical wall-shaped rotary damper rotatable about an axis and a vertical wall-shaped slide damper adjacent to the rotary damper, which is closed by a kiln opening hood forming a flat U-shape. The front of the kiln mouth when the lid is removed can be almost sealed with a kiln closed hood, and if a kiln dust collecting hood is provided directly above the upper opening of the kiln closed hood, the furnace lid removal work before and after coke extrusion It is possible to effectively collect dust from the kiln opening with a very small air volume. In addition, between the tip of the extrusion rack beam and the backstay, an opening allowing the passage of the extrusion beam on the reverse kiln mouth side and a rotary damper on the tip kiln mouth side,
A fixed hood covering the furnace port side passing range of extrusion rack beam, by closed with extruded rack beams sealed hood consisting of a moving food to set only bar Kkusute kiln inlet side of the fixed hood moves separably When extruding coke and pulling out the extrusion rack beam, the periphery of the extrusion rack beam and the kiln opening side thereof are substantially sealed by the extrusion rack beam sealing hood, and a kiln opening dust collecting hood is provided immediately above the upper opening of the moving hood. If provided, dust generated from the kiln mouth during coke extrusion and pull-out of the extrusion rack beam can be effectively collected with an extremely small air volume.

According to the second aspect of the present invention, the extruder-side kiln closing device for taking out a coke kiln according to the second aspect of the present invention has a vertical end vertically set by a rotating mechanism before a kiln opening of a furnace lid detacher of a two-point extruder. A vertical wall-shaped rotation damper rotatable around the rotation axis,
A kiln opening hood is provided adjacent to the rotary damper and has a vertical U-shaped slide damper slidable by an advance / retreat mechanism to form a flat U-shape. By installing a kiln opening dust hood just above the upper opening of the kiln opening hood, dust from the kiln opening and removing the furnace lid before and after coke extrusion and dusting from the kiln opening Dust can be collected effectively from the upper opening of the closed hood by the kiln dust collecting hood with an extremely small air volume. Further, a flat rectangular fixed hood that covers the periphery of the tip of the extrusion rack beam and the passage area of the extrusion rack beam on the kiln opening side, and a movable front and rear that can be moved toward and away from the back stay on the tip side wall of the fixed hood. a vertical wall-shaped moving hood, said fixed hood sealable rotation damper kiln inlet side of an opening to permit passage of setting only push out racks <br/> beam Conversely kiln inlet side of the fixed hood By disposing the extrusion rack beam closed hood, dust and smoke generated from the kiln opening when the extrusion rack beam moves back and forth can be almost completely sealed by the extrusion rack beam closed hood. The extruded dust collecting hood is installed at the upper opening of the vertical moving hood of the vertical wall, so that dust generated from the kiln opening when coke is extruded and when the extrusion rack beam is pulled back can be extruded. It can be effectively dust collection in very small air volume by extrusion dust hood from the beam a closed hood upper opening.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an extruder-side kiln opening device in which a kiln opening hood of the present invention has a structure in which a kiln side is sealed by a rotary damper and a front of the kiln is sealed by a slide damper.

FIG. 2 is a plan view of an extruder-side kiln opening sealing device of the present invention.

FIG. 3 is a rear view of the extruder-side kiln closing device of the present invention.

[Description of Signs] 1 Coke oven 2 Carbonization chamber 3 Furnace lid 4 Extruder 5 Furnace lid detaching machine 6 Extrusion rack beam 11 Kiln opening sealing hood 12, 23 Sealing material 13 Kiln opening rotating damper 14 Slide damper 15, 18, 26 , 27 Cylinder 16 Rotating shaft 17 Back stay 19 Detacher dust collecting hood 20, 29 Opening 21 Extruded rack beam sealed hood 22 Fixed hood 24 Moving hood 25 Rotating damper 28 Kiln-extracting dust collecting hood

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaki Hashimoto 1850 Minato, Wakayama City, Wakayama Prefecture Sumitomo Metal Industries, Ltd.

Claims (2)

[Claims] 1. A two-point type coke oven extruder-side kiln sealing method in which an extruder position is different between a furnace lid removing operation and a coke extruding operation, wherein the kiln opening side of the furnace lid removing device and a back stay are provided. A vertical wall-shaped rotation damper rotatable around a rotation axis whose vertical end is vertical and a vertical wall-shaped slide damper adjacent to the rotation damper form a U-shape in a plane. The extruder has an opening that allows the passage of the extruded rack beam on the reverse kiln mouth side and a rotary damper on the tip kiln opening side, while closing the end of the extrusion rack beam and the back stay. It is sealed by an extrusion rack beam sealing hood consisting of a fixed hood that covers the passage area of the rack beam on the kiln opening side, and a movable hood that can move toward and away from the back stay provided on the kiln opening side of the fixed hood. Out of the coke kiln Extruder side furnace mouth sealing method at the time. 2. A two-point type coke oven extruder having a different extruder position between a furnace lid detaching operation and a coke extruding operation. A vertical wall-shaped rotary damper whose end is rotatable around a vertical rotation axis by a rotary mechanism, and a vertical wall-shaped slide damper adjacent to the rotary damper and slidable by the reciprocating mechanism 2. A kiln-opening hood that forms a flat U-shape is provided, and a fixed rectangular flat hood that covers the periphery of the tip of the extrusion rack beam and the range of the extrusion rack beam that passes through the kiln opening, and a tip side wall of the fixed hood. A vertically movable wall-shaped movable hood that can be moved toward and away from the installed back stay, a rotary damper that can seal the kiln opening side of the fixed hood, and a reverse kiln opening side of the fixed hood. Allows the extruded rack beam to pass Extrusion rack beam closed hood consisting of an opening to be provided is disposed, and a kiln opening dust collecting hood is disposed directly above the kiln opening closed hood upper opening and the movable hood upper opening of the extruding rack beam closed hood, respectively. A unique device for sealing the mouth of the extruder when taking out the coke oven.