JP3264433B2 - Method and apparatus for sealing the mouth of the extruder when leaving the coke oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace lid detacher which is provided on a coke oven extruder at a kiln opening side of an extrusion rack beam so as to be able to advance and retreat in the direction of a furnace group, and on which the furnace lid is detached. The present invention relates to a method and an apparatus for sealing a kiln opening of an extruder for greatly reducing dust and smoke generated from a kiln opening on the extruder side when the kiln is discharged by an installed one-point coke oven extruder.

[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 generated while the coke oven gas is being produced during the carbonization, a very large amount of dust and gas leak from the kiln mouth 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 a detacher and swiveled to move to the oven lid cleaner position. Collapses and dust is generated.
Also, dust is generated when the furnace lid is cleaned by the furnace lid cleaning device. The largest quantities are gas and dust while red hot coke is extruded by the extrusion rack beam from the carbonization chamber from which the furnace lid has been 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 the coking chamber of the coke oven, but the effect of reducing dust and smoke is not sufficient. Further improvement is desired. In particular, the device for preventing dust and smoke emission from the kiln port on the extruder side of the coke oven is behind the dust emission prevention device from the coke guide truck and coke bucket truck on the guide truck side. There is a need for effective dust collection measures around the kiln entrance.

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 Publication (KOKAI) No. 54-120568 and Japanese Utility Model Laid-Open Publication No. Sho 54-120568 are not sufficient. 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. To provide a method and an apparatus for sealing a kiln opening on the extruder side at the time of taking out of a coke oven kiln, which can effectively perform the process with a small air volume.

[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 of a coke oven kiln, wherein a cart is provided on the mouth of the extrusion rack beam so as to be able to advance and retreat in a furnace group direction. A method for sealing a furnace port of an extruder of a one-point type extruder in which a furnace lid detacher for attaching and detaching a furnace lid to and from the carriage is provided, wherein the entire range of movement of the carriage is surrounded and covered by a dust collecting hood. A vertical wall-shaped rotary damper that is rotatable around a rotary shaft whose vertical end is vertical between the kiln opening side of the extrusion kiln and the back stay in the overall dust collecting hood; A fixed hood, which is sealed with a kiln opening sealing hood that forms a plane U-shape with a vertical wall-shaped slide damper slidable by an advance / retreat mechanism adjacent to the damper, and covers and covers the passing range of the extrusion rack beam on the carriage. And a backstay at the front of the fixed hood on the kiln opening side. A front movable hood that is movable so as to be able to come and go, a rear movable hood that is movable so as to be able to come and go with the inner surface of the entire dust collecting hood provided at the rear part of the fixed hood at the reverse kiln opening side, A vertical end of the fixed hood on the side of the fixed hood that closes the opening on the opening side is hermetically sealed by an extruded rack beam sealing hood composed of a vertical wall-shaped rotary damper rotatable around a vertical rotation axis.

[0013] As described above, the entire range of movement of the bogie of the one-point coke oven extruder is surrounded and covered by the dust collecting hood, so that the surroundings caused by dust from the kiln mouth, wind of smoke generation, and the like can be obtained. Can be prevented. Also,
A vertical wall-shaped rotary damper rotatable between the kiln opening side of the extrusion kiln and the back stay in the entire dust collection hood with a vertical axis as a vertical axis, and adjacent to the rotary damper. A vertical wall-shaped slide damper that can be slid by a reciprocating mechanism is used to seal the furnace lid sealing hood to form a flat U-shape. If it is almost sealed with a kiln opening hood and a kiln opening dust hood is provided just above the opening of the kiln opening hood, dust from the kiln opening and closing before and after coke extrusion and installation work can be reduced. It is possible to effectively collect dust with an extremely small air volume. A fixed hood surrounding and covering a passage range of the extruded rack beam on the carriage; a front movable hood which is movable at a front portion of the fixed hood on the kiln opening side so as to be able to approach and separate from a back stay; A rear moving hood, which moves so as to be able to contact and separate from the inner surface of the entire dust collecting hood provided at the rear part of the inverted kiln side of the hood, and a vertical end on the fixed hood side that closes the kiln opening side opening of the fixed hood is vertical. Dust from the kiln opening when coke is extruded and when the extrusion rack beam is pulled back, by being sealed with an extrusion rack beam sealing hood consisting of a vertical wall-shaped rotation damper that can rotate around a simple rotation axis as an axis. Dust can be collected effectively with an extremely small air volume.

[0014] In the extruder-side kiln opening sealing device at the time of taking out the coke oven kiln according to the second aspect of the present invention, a bogie is provided on the kiln opening side of the extrusion rack beam so as to be able to advance and retreat in the furnace group direction. An extruder-side kiln opening sealing device of a one-point type extruder provided with a furnace lid detacher for attaching and detaching a furnace lid, wherein the entire range of movement of the carriage is brought into contact with a back stay at an end of the kiln opening side. It has a vertical wall-shaped slide hood that can be removably moved and has an open / close damper that opens and closes a passage for an extrusion rack beam on the reverse kiln mouth side. A vertical wall-shaped rotary damper rotatable about a vertical rotation axis as an axis between the kiln opening side of the extrusion kiln and the back stay in the dust hood, and an advancing / retreating adjacent to the rotary damper. Vertical U-shape with vertical wall-shaped slide damper slidable by mechanism Formation to kiln port sealing hood disposed,
A fixed hood that surrounds and covers the passage range of the extrusion rack beam on the carriage, a front moving hood that is detachably movable with respect to a back stay provided on the kiln opening side of the fixed hood, and a reverse of the fixed hood. A rear moving hood that is removably movable toward and away from the inner surface of the entire dust collecting hood provided at a rear portion of the kiln opening, and a vertical end of the fixed hood is vertically rotated at a kiln opening of the fixed hood. An extrusion rack beam closed hood comprising a vertical wall-shaped rotary damper rotatable about an axis is disposed, and a kiln opening dust hood is provided at an upper opening of the kiln opening hood in the entire dust collecting hood. It is to be arranged.

As described above, the carriage is provided on the kiln opening side of the extrusion rack beam so as to be able to advance and retreat in the furnace group direction, and the carriage is moved forward and backward in the one-point coke oven extruder in which the furnace lid detacher is installed on the carriage. An opening / closing damper that has a vertical wall-shaped slide hood that can move forward and backward so as to be able to move toward and away from the back stay at the kiln opening end of the entire opening, and that opens and closes the extrusion rack beam passage opening on the reverse kiln opening. By surrounding and covering with the whole dust collection hood provided with, it is possible to prevent the dust from the kiln mouth and the diffusion of smoke to the periphery. A vertical wall-shaped rotary damper rotatable about a rotary shaft having a vertical end perpendicular to the kiln opening side of the extrusion kiln and the back stay in the overall dust collecting hood; A vertical wall-shaped slide damper slidable by an advance / retreat mechanism adjacent to the damper has a kiln-opening hood that forms a flat U-shape. It is almost sealed with a kiln opening hood. Furthermore, by disposing the kiln mouth dust collecting hood at the upper opening of the kiln mouth closed hood in the whole dust collecting hood, the furnace lid is attached and detached before and after coke extrusion, and dust and smoke are emitted from the kiln mouth during mounting work. Is trapped by the kiln opening hood, rises inside the kiln opening hood, and is sucked from the upper opening by the kiln opening dust hood,
Dust can be collected effectively with an extremely small air volume. Still further, a fixed hood surrounding and covering the passage range of the extrusion rack beam on the carriage, a front movable hood that is movable to be able to approach and separate from a back stay provided on the kiln opening side of the fixed hood, and A rear moving hood, which is provided at the rear side of the inverted kiln side of the hood so as to be able to move toward and away from the inner surface of the entire dust collecting hood, and a vertical end of the fixed hood side is perpendicular to the kiln opening side opening of the fixed hood. A vertical wall-shaped rotating damper that can rotate around a rotating shaft as an axis makes the extrusion rack beam sealed hood, so that when extruding coke and pulling back the extrusion rack beam, the kiln opening becomes a backstay. It is sealed by the moving hood and the fixed hood that are in contact with each other, and is a kiln mouth dust collecting hood arranged at the upper opening of the moving hood of the extrusion rack beam sealed hood. The dust from the kiln inlet during the return, it is possible to effectively dust collection in very small air volume.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION On a carriage provided on the extruder side of the extrusion rack beam on the kiln opening side of the extruder so as to be able to advance and retreat in the furnace group direction, a furnace lid detacher and an extrusion rack beam sealing hood are provided. The extrusion rack beam sealing hood is a fixed hood that covers the passage range of the extrusion rack beam, a front moving hood that can move toward and away from a back stay provided on the kiln opening side of the fixed hood, and a reverse of the fixed hood. A rear moving hood that is removably movable toward and away from the inner surface of the entire dust collecting hood provided at a rear portion of the kiln opening, and a vertical end of the fixed hood is vertically rotated at a kiln opening of the fixed hood. It is composed of a vertical wall-shaped rotary damper that can be rotated about an axis. The truck only needs to be able to move forward and backward by the installation distance between the furnace lid detacher and the extrusion rack beam sealing hood in the furnace group direction on the kiln opening side of the extrusion rack beam. As the advancing / retracting mechanism of the bogie, a cylinder system, a rack and pinion system, or the like is generally used.

The forward and backward moving mechanisms of the front moving hood, which can be moved toward and away from the back stay provided on the kiln mouth side of the fixed hood of the extrusion rack beam closed hood, and the rear moving hood provided on the rear part of the inverted kiln mouth side, include: , The front moving hood can be moved forward and backward to abut and separate from the backstay surface,
Although not particularly limited, a cylinder system, a rack and pinion system, or the like is generally used. In addition, as a rotating mechanism of a vertical wall-shaped rotating damper that is rotatable around a rotating shaft whose vertical end on the fixed hood side is perpendicular to the opening on the kiln opening side of the fixed hood, the rotating damper is rotated. The mechanism is not particularly limited as long as it can be moved to seal the kiln opening side of the fixed hood, but a mechanism for rotating the rotation axis of the rotation damper by a cylinder method, a rack and pinion method, or the like is suitable.

The carriage on the extruder is moved by positioning the extruder in a carbonization chamber where the extruder rack beam is extruded, and then operating the slide hood advance / retreat mechanism of the entire dust collecting hood. To close the tip of the sealing material in contact with the backstay surface, seal the side of the kiln opening with a kiln closing hood, advance the kiln opening / removing machine, remove the furnace lid, and set the kiln opening / closing machine to the specified position. Then, the truck is moved by operating the advancing / retreating mechanism of the truck, and the extrusion rack beam sealing hood is positioned on the kiln opening side of the extrusion rack beam.

In the present invention, the entire dust collecting hood surrounding and covering the entire range of movement of the bogie on the extruder is a vertical wall-shaped slide capable of moving back and forth at the kiln opening end so as to be capable of moving toward and away from the back stay. It has a hood and an opening / closing damper on the reverse kiln opening side to open and close the passage opening of the extrusion rack beam. The slide hood, which constitutes a part of the whole dust collection hood, can be smoothly moved forward and backward by suspending the upper part and guiding the lower part by a guide rail via a roller. The mechanism for moving the slide hood forward and backward is not particularly limited as long as the slide hood can be moved forward and backward to come into contact with and separate from the back stay, and is generally a cylinder system, a rack and pinion system, or the like.

The opening / closing damper provided at the passage opening of the extrusion rack beam on the reverse kiln opening side of the entire dust collecting hood is normally closed, and is opened in conjunction with the advance / retreat of the extrusion rack beam to allow the passage of the extrusion rack beam. I do. In conjunction with the forward and backward movement of the extrusion rack beam, a limit switch or the like is disposed at the forward or backward position of the extrusion rack beam, and the limit switch
It may be opened and closed in conjunction with N and OFF.

The operation of the slide hood at the end of the kiln opening, which constitutes a part of the whole dust collecting hood, is as follows. By operating the slide hood advancing / retracting mechanism, the slide hood is advanced to abut the sealing material at the tip against the surface of the back stay to seal it. In this case, the open / close damper on the reverse kiln opening side of the entire dust collection hood is in a sealed state.
This overall dust collecting hood is preferably configured to collect dust in association with the forward movement of the slide hood.

The kiln-opening hood disposed in the entire dust collecting hood includes a vertical wall-shaped rotary damper rotatable around a rotary shaft having a vertical end perpendicular to the vertical axis, and the rotary damper. And a vertical wall-shaped slide damper slidable by an advancing and retreating mechanism is formed in a flat U-shape. As a combination of a rotating damper and a double-sided slide damper, the two sided dampers contact the back stay to seal the side of the kiln opening, and the double-sided slide damper seals the front of the kiln opening, or the slide dampers on both sides It is possible to adopt a combination in which the side of the kiln mouth is sealed by contacting the stay and the rotary dampers on both sides seal the front of the kiln mouth.

In the case of a kiln-opening hood in which the rotating dampers on both sides abut against the backstay to seal the side of the kiln opening and the double-sided slide damper seals the front of the kiln opening, the tip of the rotating damper is located on the backstay side. A seal material is provided on the part that comes into contact with the part, improving the adhesion with the back stay side part,
One end of the double-sided slide damper is brought into contact with the other end sealing material to improve the adhesion of the double-sided slide damper. In addition, in the case of a kiln mouth closed hood in which the slide damper seals the kiln side and the rotating dampers on both sides seal the kiln front, a seal material is provided at the tip of the slide damper to abut the back stay surface, Adhesion with the back stay is improved, and the rotation dampers on both sides are provided with a sealing material at an overlapping portion at the tip to improve the adhesion of the rotation damper.

The rotating mechanism of the rotating damper is not particularly limited, as long as the rotating damper is rotated to abut on the side portion of the back stay or to overlap the mutual ends.
A mechanism that rotates the rotation shaft of the rotation damper by a cylinder method, a rack and pinion method, or the like is suitable.

The operation of the rotary damper is such that, when the rotary damper seals the side of the kiln opening, the extruder is moved in the direction of the furnace group to align the extruder rack beam with the carbonization chamber for kiln ejection, and then the slide hood is moved. Operate the advancing / retracting mechanism to advance the slide hood of the entire dust collection hood, contact the sealing material at the tip with the surface of the back stay to seal it, and then rotate it before attaching and detaching the furnace lid to contact the side of the back stay. Let it. When the rotary damper seals the front of the kiln opening, the rotary damper is rotated so as not to interfere with the furnace lid detacher, in conjunction with the forward and backward movement of the furnace lid remover.

In the case where the rotary damper seals the front of the furnace opening, the rotary damper is rotated to open the front of the furnace opening before the furnace lid removal machine advances, and in the state where the furnace lid removal machine is advanced. By rotating the rotary damper to a semi-open state, if the cross-sectional area of the furnace lid detacher occupying a large percentage of the cross-sectional area of the opening of the rotary damper is increased, air suction from the rear part of the furnace lid remover is prevented. The structure can be largely suppressed, and the state can be substantially closed. After the furnace lid remover removes the furnace lid and retreats, the rotary damper is rotated until the extrusion starts to seal the front of the kiln opening. The rotation damper is linked with the forward and backward movement of the furnace lid detacher by disposing a limit switch and the like at the forward and backward positions of the furnace lid remover,
It may be rotated in conjunction with N and OFF.

The slide damper constituting the closed mouth 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 slide damper forward and backward is not particularly limited as long as it can move the slide damper forward and backward, but a cylinder system, a rack and pinion system, a screw shaft system, and the like are suitable.

The operation of the slide damper is such that, when the slide damper seals the side of the kiln opening, the extruder is moved in the direction of the furnace group to position the extruded rack beam in the carbonization chamber for kiln ejection, and the slide hood is moved forward and backward. To move the slide hood of the entire dust collection hood forward to abut the sealing material at the tip against the backstay surface and seal it, then advance the slide damper before attaching and detaching the furnace lid to abut the surface of the backstay. Let it. When the slide damper seals the front of the kiln opening, it is moved forward and backward so as not to interfere with the furnace lid remover, but the slide damper is retracted before the furnace lid remover advances. Open the front of the kiln opening as a state. In the forward state of the furnace lid detacher, the slide damper is in a semi-open state.However, if the cross-sectional area of the furnace lid detacher relative to the cross-sectional area of the opening of the slide damper is a high percentage, air from the rear part of the furnace lid remover is removed. , And the structure can be substantially suppressed. Further, after the furnace lid detacher removes the furnace lid and retreats, the slide damper is moved forward until the extrusion starts to seal the front of the kiln opening. The linkage between the slide damper and the forward / backward movement of the furnace lid remover is performed by disposing a limit switch or the like at the forward / backward movement position of the furnace lid remover, and turning on / off the limit switch.
What is necessary is just to advance and retreat in conjunction with F.

After the furnace lid is removed and the furnace lid remover is retracted to a predetermined position, the carriage is moved by operating the carriage moving mechanism on the extruder, and the extrusion rack beam sealing hood is moved to the extrusion port of the extrusion rack beam. To the side. After that, the front moving hood is advanced by operating the forward / backward movement mechanism of the front moving hood of the extrusion rack beam closed hood, but the front of the kiln opening closed hood is closed in accordance with the forward movement of the front moving hood. The rotating damper or the slide damper is opened, and the front end of the front moving hood is brought into contact with the back stay, and the forward / backward movement mechanism of the rear moving hood is operated so that the front end of the rear moving hood comes into contact with the entire dust collecting hood. Thereby, the range through which the extrusion rack beam passes is defined by the front moving hood, the front rotating damper,
The fixed hood, the rear movable hood, and the open / close damper of the entire dust collecting hood are sealed and the preparation for extrusion is completed.

When the extrusion rack beam starts to advance,
In conjunction with the forward movement, the opening / closing damper of the entire dust collecting hood is first opened, and then the front rotary damper is opened to start coke extrusion. Next, when the backward movement of the extrusion rack beam is started, the front rotation damper is first closed in conjunction with the backward movement, and then the open / close damper of the entire dust collection hood is closed,
Again, the area through which the extrusion rack beam passes is sealed.

Next, the rotary damper or slide damper that closes the front of the kiln opening hood is closed in conjunction with the retreating movement of the front moving hood of the extrusion rack beam closing hood, and the kiln opening is closed again. Seal with a hood. During the period from the removal of the furnace lid to the completion of the coke extrusion, the cleaning of the furnace lid held by the furnace lid detacher has been completed by the furnace lid cleaner. The dust generated at the time of cleaning the furnace lid is collected by the furnace lid cleaner dust collecting hood.

When the cleaning of the furnace lid and the extrusion of the coke are completed, the carriage is moved in the opposite direction by operating the advancing / retracting mechanism of the bogie, and the furnace lid detacher holding the furnace lid is moved to the coking chamber position where the coke is extruded. Adjust to After that, the oven lid detacher holding the oven lid is turned by 90 ° so that the sheet cleaner faces the kiln opening, and the kiln opening front hood is closed in conjunction with the operation of moving the sheet cleaner forward to the carbonization chamber. The rotating damper or the slide damper is opened in a semi-open state, and the sheet metal is cleaned. At the same time, the tar pan below the kiln mouth is cleaned. During the cleaning of the sheet metal and the cleaning of the tar pan, the rotary damper or slide damper that closes the front of the kiln opening of the kiln opening hood is semi-opened in the same manner as described above, and the inside of the kiln opening hood is cleaned. The dust is always collected by the kiln mouth dust collecting hood just above the opening above the kiln mouth closed hood. When the cleaning of the sheet metal and the cleaning of the tar pan are completed and the sheet cleaner retreats, the rotary damper or slide damper that closes the front of the kiln opening of the kiln closing hood is closed to seal the kiln opening.

Next, the furnace lid detacher holding the furnace lid is turned by 90 ° in the opposite direction to the above, so that the furnace lid is opposed to the kiln opening, and the kiln is linked with the operation of moving the furnace lid detacher forward into the carbonization chamber. The rotary damper or slide damper that closes the front of the kiln opening of the mouth-opening hood is half-opened, and the furnace lid is attached to the kiln opening.
When the installation of the furnace lid is completed, the furnace lid detacher is retracted to a predetermined position and the coke extrusion work is completed, and the rotary damper or slide damper sealing the side of the kiln opening of the kiln opening hood is opened. Then, after opening the rotary damper or slide damper closing the front of the kiln opening the kiln opening again, the extruder is moved to the carbonization chamber for extruding the next coke.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the method and the apparatus for sealing the mouth of the extruder according to the present invention will be described below with reference to FIGS. 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 an enlarged schematic cutaway rear view of a main part of the extruder-side kiln closing device.

1 to 3, reference numeral 1 denotes a coke oven;
Reference numeral 3 denotes an extruder which extrudes red-hot coke which has been carbonized from the coking chamber 2; Reference numeral 5 denotes a truck which moves forward and backward in the direction of the furnace group by a cylinder 6 installed on the extruder 4. On the truck 5, a furnace lid detacher 7 for detaching the furnace lid 3 and an extrusion rack beam covering the passing range of the extrusion rack beam 8. Hermetic hoods 9 are provided at predetermined intervals in the furnace group direction. Reference numeral 10 denotes a furnace lid cleaner provided in the extruder 4, and reference numeral 11 denotes a sheet cleaner for cleaning a sheet metal in a kiln opening provided at an angle of 90 ° with a desorption mechanism in the furnace lid demounter 7. Although not shown, the extruder 4 is provided with a leveler for leveling the upper surface of the coal charged into the carbonization chamber 2. In addition, 12 is a backstay for holding the coke oven 1.

Numeral 21 denotes an entire dust collecting hood which surrounds and covers the entire range of movement of the carriage 5, and numeral 22 denotes a vertically movable movable wall having a sealing material 23 provided at both ends of the dust collecting hood 21 at both kiln openings. When the slide hood 22 is advanced by operating the cylinder 24 with the slide hood,
Are in contact with the back stay 12 so that both kiln openings of the entire dust collecting hood 21 can be sealed from bottom to top. In addition, a cylinder 26 is provided in a passage opening for allowing the passage of the extrusion rack beam 8 on the reverse kiln mouth side of the entire dust collecting hood 21.
A slide damper 27 that opens and closes according to the present invention is provided. Further, a dust collection duct 28 is connected to the entire dust collection hood 21 so that dust-containing gas is sucked from inside the entire dust collection hood 21.

Reference numeral 31 denotes a vertical wall having a sealing material 32 provided at a tip end provided in front of the mouth of the extrusion kiln in the entire dust collecting hood 21 and having a base end rotatable around a vertical rotation axis. The cylinder 35 is operated with a rotary damper 33 and a kiln mouth closed hood comprising a vertical wall-shaped slide damper 34 adjacent to the rotary damper 33 and slidable by an advance / retreat mechanism. When the cylinder 36 is turned by 90 °, the sealing material 32 at the tip comes into contact with the side of the back stay 12 at the kiln opening, and the cylinder 37 is operated to operate the slide damper 34.
Is advanced and closed, the kiln opening of the carbonization chamber 2 of the extrusion kiln can be sealed from the bottom to the top.

An opening 39 is provided in the upper part of the rotary damper 33 so as to be located immediately below the kiln opening dust collecting hood 38, and all dust and gas generated when the furnace lid 3 is attached / detached are removed from the kiln. It is configured to rise inside the mouth-sealing hood 31, pass through the opening 39, and be effectively collected by the kiln dust collecting hood 38 with a small air volume.

The extrusion rack beam sealing hood 9 provided on the carriage 5 is advanced and retreated by a fixed hood 41 covering the passage range of the extrusion rack beam 8 and a cylinder 42 provided on the kiln opening side of the fixed hood 41. A front moving hood 44 having a sealing material 43 at the tip that comes into contact with and detaches from the surface of the stay 12, and a cylinder 45 provided on the reverse kiln opening side of the fixed hood 41 so as to advance and retreat to the reverse kiln of the entire dust collecting hood 21. A rear moving hood 47 having a sealing material 46 at a tip that comes into contact with and separates from the periphery of the passage of the extrusion rack beam 8 on the mouth side.
And a vertical wall-shaped rotating damper 49 that opens and closes a kiln opening of the fixed hood 41 with a cylinder 48.

With the above configuration, when the coke is discharged from the kiln, the extruder 4 is run to position the extrusion rack beam 8 in the carbonization chamber 2 for extruding the coke. At this time, the furnace lid detacher 7 installed on the trolley 5 matches the coking chamber 2 for extruding coke. Next, when the cylinder 24 is operated to advance the slide hood 22 having a vertical wall shape, the sealing material 23 at the tip comes into contact with the back stay 12, and the kiln mouth sides of the entire dust collection hood 21 are sealed from bottom to top. I do. At this time, the passage of the extrusion rack beam 8 on the reverse kiln opening side of the entire dust collecting hood 21 is closed by closing the slide damper 27, and dust-containing gas is discharged from inside the entire dust collecting hood 21 by the dust collecting duct 28. Has been sucked.

Thereafter, the cylinder 35 is operated to rotate the rotating shaft 36 of the rotating damper 33 by 90 °, and the sealing material 32 at the tip is brought into contact with the side surface of the back stay 12 at the kiln opening. At this point, the slide damper 34 is in a fully opened state. Next, the cylinder 37 is operated to close the slide damper 34 to such an extent that the slide damper 34 does not interfere with the furnace lid remover 7 in accordance with the operation of moving the furnace lid remover 7 forward. At this time,
Although the slide damper 34 is in a semi-open state, the cross-sectional area of the furnace lid detacher 7 occupies a high proportion of the cross-sectional area of the opening of the slide damper 34, so that the air suction from the rear part of the furnace lid detacher 7 is greatly reduced. Is suppressed.

Next, the furnace lid detacher 7 is operated to operate the carbonization chamber 2.
The furnace lid 3 is removed, and the cylinder 37 is operated in accordance with the backward movement of the furnace lid detacher 7, and the slide damper 34 is operated.
Is moved forward and closed, and the kiln opening is closed by the kiln opening sealing hood 31. Therefore, all dust and gas generated from the kiln opening when the furnace lid is removed rises in the kiln closing hood 31, passes through the opening 39, and is collected by the kiln dust collecting hood 38. During the attachment / detachment work of the furnace lid 3, the sealing or semi-sealing is always achieved by the kiln opening hood 31. Further, since the surroundings are covered by the entire dust collecting hood 21, the opening from the kiln opening is performed. The blow-out diffusion of the gas in the furnace and the entrainment of the surrounding air are greatly reduced, and the generation of dust and smoke to the surroundings is similarly reduced. For this reason, dust can be effectively collected from the opening portion 39 of the kiln mouth closed hood 31 by the kiln opening dust collecting hood 38 with a greatly reduced suction air volume.

Then, the carriage 6 is moved by operating the cylinder 6 to position the extrusion rack beam sealing hood 9 with the carbonization chamber 2. After a while, the kiln mouth closed hood 31
After operating the cylinder 37 to retreat the slide damper 34 and open the front of the kiln opening, the front moving hood 44 of the extrusion rack beam sealing hood 9 is advanced by operating the cylinder 42, and the sealing material 43 at the tip end is moved. Backstay 1
2 and the cylinder 45 is operated to move the rear moving hood 47 forward, so that the entire dust collecting hood 21
The sealing material 46 at the tip is brought into contact with the periphery of the passage of the extrusion rack beam 8 on the reverse kiln opening side. At this time, the extrusion rack beam sealed hood 9 has the kiln opening side of the fixed hood 41 formed by a vertical wall-shaped rotary damper 49, and the reverse kiln opening side has the passage opening of the extrusion rack beam 8 of the entire dust collecting hood 21. The slide damper 27 is closed and hermetically closed.

Next, in accordance with the forward movement of the extrusion rack beam 8, the slide damper 27 is first opened by operating the cylinder 26, and then the rotary damper 49 is opened by operating the cylinder 48. The red hot coke is extruded from the carbonization chamber 2. During this extrusion operation, the kiln opening of the carbonization chamber 2 is substantially sealed by the extrusion rack beam sealing hood 9, so that air suction from the rear part of the extrusion rack beam 8 is greatly suppressed, and the firing from the kiln opening is performed. Dust and smoke rise in the front moving hood 44 and are collected by the kiln dust collecting hood 38 from the opening 39 of the kiln closing hood 31. During this time, the furnace lid 3 detached by the furnace lid detacher 7 is cleaned by the furnace lid cleaner 10.

When the extrusion rack beam 8 is pulled back after the extrusion is completed, when it is detected that the extrusion ram head has passed the position of the rotation damper 49, the cylinder 48 is operated to close the rotation damper 49, and then the extrusion ram head is operated. When it detects that has passed the position of the slide damper 27, the slide damper 27 is closed by operating the cylinder 26, and the kiln opening is sealed with the extrusion rack beam sealing hood 9. Therefore, the dust and smoke generated from the kiln mouth when the red hot coke is extruded rises in the front slide hood 44 and is greatly reduced by the kiln mouth dust collecting hood 38 from the opening 39 of the kiln mouth closed hood 31. Dust is effectively collected by the suction air volume that has been set. During this time, the furnace lid 3 held by the furnace lid remover 7 is cleaned by the furnace lid cleaner 10.

Next, when the retraction of the extrusion rack beam 8 is completed, the front moving hood 4 of the extrusion rack beam closed hood 9 is moved.
4 is moved backward by operating the cylinder 42, and after operating the cylinder 45 to retract the rear moving hood 47, the cylinder 37 is operated to advance and close the slide damper 34 of the kiln opening hood 31; The kiln opening is sealed with a kiln opening hood 31. Next, the cylinder 6 is operated to move the carriage 5 in the opposite direction to that described above, and the cylinder 37 is operated to move the slide damper 34 in accordance with the operation of moving the sheet cleaner 11 attached to the furnace lid detacher 7 forward.
To the extent that it does not interfere with the sheet cleaner 11. At this time, the slide damper 34 is in a semi-open state, but the cross-sectional area of the sheet cleaner 11 occupies a high proportion of the cross-sectional area of the opening of the slide damper 34, and the suction of air from the rear portion of the sheet cleaner 11 is largely suppressed. Is done. Therefore, dust generated when cleaning the sheet metal by the sheet cleaner 11 rises in the kiln opening hood 31, passes through the upper opening 39, and has a suction air volume greatly reduced by the kiln dust collecting hood 38. Dust is collected effectively.

When the cleaning of the metal sheet by the sheet cleaner 11 is completed, the slide damper 34 is advanced and closed by operating the cylinder 37 in accordance with the operation of retracting the sheet cleaner 11, and the kiln opening sealing hood 31 is closed. And Thereafter, the furnace cover detaching machine 7 is rotated by 90 °, and the furnace cover removing mechanism is made to face the kiln opening side, and then the furnace cover removing machine 7 is advanced. The cylinder 37 is operated to move the slide damper 34 backward so as not to interfere with the furnace lid detacher 7 and open in accordance with the operation of moving the furnace lid remover 7 forward. At this time, the slide damper 34
Is in a semi-open state, but the cross-sectional area of the furnace lid detacher 7 occupying a large percentage of the opening cross-sectional area of the slide damper 34 is set high, so that the suction of air from the rear part of the furnace lid detacher 7 is greatly suppressed.

Next, after the furnace lid 3 held by operating the furnace lid remover 7 is attached to the kiln opening, the furnace lid remover 7 is retracted to a fixed position. Next, the cylinder 35 is operated to rotate the rotation shaft 36 of the rotation damper 33 by 90 ° in the opposite direction to that described above, so that the rotation damper 33 is disengaged from the side surface of the back stay 12 to open the kiln opening side surface. Further, the slide hood 2 on both kiln mouth sides of the entire dust collecting hood 21 is operated by operating the cylinder 24.
The extruder 4 is moved backward to complete the extrusion operation, and the extruder 4 is moved toward the carbonization chamber 2 where the next kiln is discharged.

Therefore, when the coke oven is removed from the extruder when the coke oven is taken out of the furnace, when the furnace lid, which emits a lot of dust and smoke, is removed and coke is extruded, the entire dust collecting hood 21 is entirely covered and sealed, and the furnace lid is removed. In front of the kiln mouth on the extruder side at the time,
The kiln opening hood 31 constantly seals or semi-closes the air. When coke is extruded, it is sealed by the extrusion rack beam sealing hood 9. The entrapment of the surrounding air can be greatly reduced, and the generation of dust and smoke to the surrounding area can be reduced as well. Dust can be collected.

In the coke oven 1, 70
Dry coke to about 0 to 900 ° C to take out coke from the kiln, put coke into the prechamber of coke dry fire extinguishing equipment, blow air generated from coke in the prechamber and burn it to burn coke. When the present invention is applied to a coke oven to be terminated, a combustion cylinder is installed downstream of the kiln mouth dust collecting hood 38 of a system that collects dust with the kiln mouth dust collecting hood 38 from the opening 39 above the kiln mouth closed hood 31. A pilot burner of propane gas may be provided inside to burn flammable gas in the suction gas, and a flush-type pre-duster and a mist separator may be provided downstream of the combustion cylinder.

[0051]

According to the first aspect of the present invention, there is provided a method for sealing a furnace port on a coke oven extruder side, wherein the entire range of movement of a bogie provided on a furnace side of an extrusion rack beam so as to be able to advance and retreat in a furnace group is entirely collected. By covering with a hood, dust from the kiln mouth,
It is possible to prevent the smoke from spreading to the surroundings. A vertical wall-shaped rotary damper rotatable between the kiln opening side of the extrusion kiln and the back stay in the entire dust collecting hood with a vertical axis as a vertical axis; A vertical wall-shaped slide damper that is slidable by an advance / retreat mechanism adjacent to the furnace and sealed with a kiln opening hood that forms a flat U shape. The surrounding area is almost sealed with a kiln opening hood, and the kiln dust collecting hood just above the opening of the kiln opening hood removes and removes the furnace lid before and after coke extrusion. Dust can be collected effectively by the air volume. A fixed hood surrounding and covering a passage range of the extruded rack beam on the carriage; a front movable hood which is movable at a front portion of the fixed hood on the kiln opening side so as to be able to approach and separate from a back stay; A rear moving hood, which moves so as to be able to contact and separate from the inner surface of the entire dust collecting hood provided at the rear part of the inverted kiln side of the hood, and a vertical end on the fixed hood side that closes the kiln opening side opening of the fixed hood is vertical. Dust from the kiln opening when coke is extruded and when the extrusion rack beam is pulled back, by sealing with an extrusion rack beam sealing hood consisting of a vertical wall-shaped rotation damper that can rotate around a simple rotation axis as an axis. Dust can be collected effectively with an extremely small air volume.

Further, according to a second aspect of the present invention, in a coke oven extruder-side kiln opening sealing device, a bogie is provided on the kiln opening side of the extruding rack beam so as to be able to advance and retreat in a furnace group direction, and a furnace lid is attached and detached on the bogie. The entire range of movement of the bogie of the one-point coke oven extruder in which the machine is installed, has a vertical wall-shaped slide hood that can move forward and backward so as to be able to move toward and away from the backstay at the kiln opening side end, A dust collector hood with an opening / closing damper that opens and closes the extrusion beam opening on the reverse kiln opening side prevents the dust and smoke from the kiln opening from spreading to the surrounding area. . In addition, a vertical wall-shaped rotary damper rotatable around a rotary axis whose vertical end is vertical, between the kiln opening side of the extrusion kiln and the back stay in the entire dust collecting hood,
By arranging a kiln opening sealed hood that forms a plane U-shape with a vertical wall-shaped slide damper slidable by an advance / retreat mechanism adjacent to the rotary damper, the furnace lid before and after coke extrusion is attached and detached, The kiln mouth is almost sealed with a kiln opening hood. Furthermore, by disposing the kiln mouth dust collecting hood at the upper opening of the kiln mouth closed hood in the whole dust collecting hood, the furnace lid is attached and detached before and after coke extrusion, and dust and smoke are emitted from the kiln mouth during mounting work. Is trapped by the kiln opening hood, rises inside the kiln opening hood, and is sucked from the upper opening by the kiln dust collecting hood, so that dust can be effectively collected with an extremely small air volume. Still further, a fixed hood covering the range of the extrusion rack beam on the carriage,
A front moving hood that moves removably to and from a backstay provided on the kiln opening side of the fixed hood, and a movable front hood that moves to and away from the inner surface of the entire dust collecting hood provided on the reverse kiln opening side of the fixed hood. An extrusion rack beam seal comprising: a rear movable hood to be moved; and a vertical wall-shaped rotary damper rotatable around a rotary axis whose vertical end on the fixed hood side is perpendicular to the kiln opening side opening of the fixed hood. By disposing the hood, the opening of the kiln is closed by the front movable hood and the fixed hood in contact with the back stay when extruding coke and pulling back the extrusion rack beam. The dust collecting hood disposed in the section can effectively collect dust generated from the kiln mouth when coke is extruded and when the extrusion rack beam is pulled back with an extremely small air volume.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an extruder-side kiln opening sealing device having a structure in which a kiln opening sealing hood seals the kiln opening side by a rotary damper and the kiln opening front by a slide damper.

FIG. 2 is an enlarged plan view of an essential part of the extruder-side kiln closing device of FIG.

FIG. 3 is an enlarged schematic rear view of a main part of an extruder-side kiln opening sealing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Coke oven 2 Carbonization room 3 Furnace lid 4 Extruder 5 Dolly 7 Furnace lid detacher 8 Extrusion rack beam 9 Extrusion rack beam sealing hood 10 Furnace lid cleaner 11 Sheet cleaner 12 Back stay 21 Overall dust collecting hood 22 Slide hood 23, 32 , 43, 46 Sealing material 6, 24, 26, 35, 37, 42, 45, 48 Cylinder 27, 34 Slide damper 28 Dust collecting duct 31 Kiln opening hood 33 Rotating damper 36 Rotating shaft 38 Kiln opening dust hood 39 Opening 41 Fixed Hood 44 Front Moving Hood 47 Rear Moving Hood 49 Rotary Damper

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaki Hashimoto 1850 Minato, Wakayama City, Wakayama Prefecture Sumitomo Metal Industries, Ltd. Wakayama Works (56) References JP-A-6-340880 (JP, A) JP-A-53- 124508 (JP, A) JP-A-53-60902 (JP, A) JP-A-54-120568 (JP, U) JP-A-6-59446 (JP, U) (58) Fields investigated (Int. ⁷ , DB name) C10B 45/00 C10B 33/10 C10B 25/00

Claims (2)

(57) [Claims] 1. A one-point type in which a bogie is provided on a coke oven extruder at a kiln opening side of an extrusion rack beam so as to be able to advance and retreat in a furnace group direction, and a furnace lid detacher for attaching and detaching a furnace lid is mounted on the bogie. An extruder-side kiln opening sealing method for an extruder, wherein the entire range of retreat of the bogie is surrounded and covered by an entire dust collecting hood, and a gap between the kiln opening side of the extrusion kiln and the back stay in the overall dust collecting hood is provided. A vertical wall-shaped rotation damper rotatable about a rotation axis whose vertical end is vertical, and a vertical wall-shaped slide damper adjacent to the rotation damper and slidable by an advance / retreat mechanism. Close with a kiln mouth closed hood that forms a shape,
A fixed hood that surrounds and covers the passage range of the extrusion rack beam on the carriage, a front movable hood that moves to be able to approach and separate from a backstay at a front portion of the fixed hood on the kiln opening side, A rear moving hood that moves so as to be able to contact and separate from the inner surface of the entire dust collection hood provided at the rear of the reverse kiln opening side,
A vertical end of the fixed hood on which the kiln opening side opening of the fixed hood is closed is sealed with an extruded rack beam sealed hood including a vertical wall-shaped rotary damper that is rotatable around a vertical rotation axis. Characteristic method of sealing the mouth of the coke oven extruder. 2. A one-point type in which a bogie is provided at the kiln opening side of the extrusion rack beam on the coke oven extruder so as to be able to advance and retreat in the furnace group direction, and a furnace lid detacher for attaching and detaching a furnace lid is provided on the bogie. An extruder-side kiln opening sealing device for an extruder, comprising a vertical wall-shaped slide hood that is movable back and forth at the kiln-side end of the bogie so as to be capable of moving toward and away from a backstay. Then, it is surrounded and covered with an entire dust collecting hood provided with an opening / closing damper for opening and closing the passage opening of the extrusion rack beam on the reverse kiln opening side, between the kiln opening side of the extrusion kiln and the back stay in the overall dust collecting hood, A vertical wall-shaped rotary damper whose vertical end is rotatable around a vertical rotation axis, and a vertical wall-shaped slide damper adjacent to the rotary damper and slidable by an advance / retreat mechanism. A closed mouth hood that forms A fixed hood that surrounds and covers the passage range of the output rack beam, a front moving hood that removably moves toward and away from a backstay provided on the kiln opening side of the fixed hood, and a reverse kiln opening side of the fixed hood. A rear moving hood that is removably movable toward and away from the inner surface of the entire dust collecting hood provided at the rear, and a rotating shaft whose vertical end on the fixed hood side is perpendicular to the kiln opening side opening of the fixed hood is provided around an axis. An extruded rack beam closed hood consisting of a rotatable vertical wall-shaped rotating damper is provided, and a kiln opening dust hood is provided in the upper opening of the kiln opening hood in the entire dust collecting hood. A furnace opening sealing device on the coke oven extruder side.