JPH1121559A - Device for removing carbon around charging hole of coke oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the carbon deposited around the charging hole of a coke oven, without damaging the oven wall, with high efficiency and a shot time, and with a simple device. SOLUTION: After the inclination of four air-feeding lance 15 to the vertical direction is reduced, this device is inserted into charging hole 5. Then, the inclination of air-feeding lance 15 to the vertical direction is expanded. A plurality of air-spraying nozzles 37 which are disposed in the longitudinal direction of each air-feeding lance are held at roughly the same distance from the inclined surface of charging hole 15 and are also directed to four corner portions which are likely to have much deposited carbon. Air is now sprayed from air-spraying nozzles 37, to remove deposited carbon efficiently by burning and/or lift-off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing carbon around a charging hole of a coke oven for burning and removing carbon adhering around a charging hole for charging coal into a carbonization chamber of a coke oven. .

[0002]

2. Description of the Related Art In a coke oven, coal is charged from a plurality of charging holes provided in an upper portion of a coking chamber, and a charged coal layer is formed in the coking chamber. The coal bed in the coking chamber is carbonized by indirect heating through the furnace wall brick from the adjacent combustion chamber over ten and several hours. During this carbonization, gas is generated in the carbonization chamber, and this gas passes through the space above the charged coal seam and is recovered from the riser. At this time, in the coking chamber, carbon is generated due to the thermal decomposition of the raw gas generated during the dry distillation of coal, and this carbon adheres to the furnace wall of the coking chamber, particularly to the furnace ceiling side above the charged coal layer.

It is said that the amount of carbon deposited is 600 μm in one dry distillation. Each time the carbonization is repeated, the deposited carbon grows, and the deposited carbon causes problems such as deterioration of heat transfer, a decrease in the amount of charged coal, and an increase in coke extrusion resistance, leading to trouble in the operation of the coke oven. For this reason, it is necessary to periodically check the state of carbon deposition on the furnace wall of the carbonization chamber, and to remove carbon according to the state of carbon deposition.

As a technique for removing the adhered carbon, for example, there is a conventional technique disclosed in Japanese Patent Application Laid-Open No. 61-231088. After extruding coke from a carbonization chamber, the furnace lids on the extruder side and the guide wheel side are attached. In other words, the carbonization chamber is left open for several hours in a state where both ends of the carbonization chamber are open to the atmosphere, and is removed by burning off the deposited carbon due to contact with the outside air and peeling off the deposited carbon due to a decrease in the furnace temperature.

[0005] As described above, the amount of deposited carbon is highest on the ceiling side of the carbonization chamber, and the charging hole is a portion where it is difficult to remove carbon because it is constructed on a complicated surface. In the operation of a coke oven, carbon adhesion to the charging hole
It causes serious troubles such as congestion of coal charging. Therefore, in order to remove the carbon adhering to the ceiling wall having the largest amount of carbon adhering in the carbonization chamber, especially the adhering carbon around the charging hole, the following carbon removing technology has been conventionally proposed. In other words, after the carbonization of coal in the coking chamber is completed, the charging lid that closes the charging hole for about 30 minutes before extruding coke is placed in the coking chamber in order to discharge coke. The charging lid is tilted to make the charging lid slightly open, and the canopy installed at the upper end of the riser is opened to guide air and burn off attached carbon to remove it.

[0006] Further, Japanese Patent Application Laid-Open No. 6-100864 discloses that a lance cylinder is inserted into a charging hole of a carbonization chamber, a plurality of nozzles are provided around the lance cylinder toward the inner wall of the charging hole, and a lance cylinder is provided. An apparatus is disclosed in which the height of an air resistor hanging down inside is changed to adjust the ejection angle of blown air to burn and separate carbon adhering around a charging hole to remove the carbon.

[0007]

However, in the technique of removing the furnace lids at both ends of the carbonization chamber by spontaneous combustion while opening the furnace lids at both ends of the carbonization chamber, heat loss of the furnace is reduced because the furnace ends are opened for a long time. In addition to being large, joints of the bricks in the furnace are liable to break due to a rapid decrease in the furnace temperature, and the carbonization chamber must be emptied for a long time, so that production loss is inevitable. In particular, since the periphery of the charging hole with a large amount of carbon deposition is far from the furnace lid position that is open to the atmosphere, it is not suitable for removing the carbon deposited around the charging hole. In addition, when removing the attached carbon by natural ventilation by slightly opening the charging lid covering the charging hole, since combustible gas from the charged coal layer is accumulated at the upper part of the carbonization chamber before coke extrusion, The generated gas burns in preference to the deposited carbon.

As a result, in the removal of carbon for about 30 minutes,
Not only is the removal incomplete, but also a sharp rise in furnace temperature and a sharp drop after the end of the operation. As a result, there are problems such as damage to the furnace body itself, distortion of the furnace lid due to repeated rapid heating and rapid cooling, and damage to the seal plate. In addition, the technology that adjusts the jetting angle of air blown from multiple nozzles by changing the resistor that hangs down in the lance cylinder is not easy because the distance from the air jetting section to the furnace wall tends to be uneven and distant. It is difficult to selectively concentrate a large number of specific positions of carbon in a short time and accurately. In particular, there is a problem that it is difficult to remove the carbon adhering to the corners where the amount of adhesion is particularly large around the charging hole constructed on a complicated surface.

The present invention has been made in order to solve such a problem, and it is possible to efficiently remove carbon adhering around a charging hole in a short time and efficiently without leaving damage to a furnace. It is an object of the present invention to provide a device for removing carbon around a charging hole of a coke oven which can perform the process.

[0010]

According to the first aspect of the present invention, there is provided an empty kiln supported on a coke oven by a movable body movable in the direction in which the coking chambers are arranged. In the carbon removing device around the coke oven charging hole provided with an air supply lance device for forcibly supplying air in the charging hole of the carbonized chamber in the state, the air supply lance device faces downward from the moving body. A lifting frame guided by a lifting guide rail vertically suspended from the vehicle and arranged to be able to move up and down by a lifting device, and a vertically supporting rod supported by the lifting frame and extending downward and arranged to be able to move up and down. An elevating ring, a ring-shaped air header which is concentrically supported around the elevating ring via a support member and has a plurality of communication ports arranged at intervals in a circumferential direction; and a ring-shaped air header. A plurality of air outlet nozzles are connected in a longitudinal direction so that the inclination angle can be adjusted and air-tightly connected via ring portions arranged in the circumferential direction so as to cover the communication port. An air supply lance, a lance expansion / contraction rod rotatably connected to the lower end of the air supply lance and the lower end of the vertical support rod via pins at both ends, and installed downward on the lifting frame. A carbon removing device around a coke oven charging hole, comprising a lifting device connected to the lifting ring so as to be able to move up and down, and an air supply device connected to the ring-shaped air header.

According to a second aspect of the present invention, four air supply lances according to the first aspect are provided so as to be able to approach four corner portions of the charging hole having a large amount of adhered carbon. It is a carbon removal device around the coke oven charging hole. According to a third aspect of the present invention, there is provided an air supply lance device according to the first aspect, wherein the air supply lance device is attached to and detached from a charging lid for closing a charging hole of a carbonization chamber which is supported by the moving body and is in an empty kiln state. A carbon removing device around a charging hole of a coke oven characterized by comprising a swiveling lid removing device.

According to a fourth aspect of the present invention, the moving body is a charcoal truck or a special truck traveling on a coke oven, and the carbon removal around the coke oven charging hole according to the first or second aspect is provided. Device.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG.
A large number of carbonization chambers 1 and combustion chambers 2 are alternately arranged via a furnace wall brick 4, and a ceiling wall constituting each carbonization chamber 1 has
As shown in FIG. 7, a plurality (for example, 4
) Are provided. On the furnace of the coke oven 3, a coal-equipped wheel 6 that can travel in the direction in which many carbonization chambers 1 are arranged is arranged. In the figure, 6a is the wheel.

The coal-equipped vehicle 6 has four coal-equipped hoppers 7 (FIG. 6).
Is a side view, only one of which is visible), and four of the loading lids 8 attached to each of the loading holes 5 are used here for attaching and detaching the targeted loading lid 8a. A lid removing machine 9 for charcoal is provided. The lid removing machine 9 for charging coal is provided with a lifting magnet 9a (hereinafter, referred to as a rif mag), and the rif mag 9a can fix and lift the target iron charging lid 8a by magnetic force.

Then, the coal loading vehicle 6 moves to the position of the coking chamber 1a in the order of charging coal, and performs a charging operation of coal. That is, first, the lid removing machine 9 is operated to lift the rif mag 9a.
Is magnetically attached to the loading lid 8a, and the loading lid 8a is removed from the loading hole 5. Subsequently, the coal stored in each coal hopper 7 is cut out by the coal feeder 10 and charged into the carbonization chamber 1a through the charging hole 5. Furthermore, the surface of the coal charged into the carbonization chamber 1a is leveled by a leveler (not shown), and the coal
After the formation of 11, the lid removing machine 9 is operated again to cover the charging hole 5 with the charging lid 8a by the rif mag 9a and close it.

The charged coal bed 11 formed in the coking chamber 1 is indirectly heated by the heat transfer of the furnace wall brick 4 by the temperature rise in the combustion chamber 2 arranged on both sides of the coking chamber 1, and more than ten It is carbonized over time. As shown in FIG. 7, the gas generated in the carbonization chamber 1 during the carbonization period passes through the upper space of the charged coal seam 11, is collected via the riser pipe 12 into the collection pipe 13, and finally is collected. Are stored in a gas holder (not shown). Further, in the carbonization chamber 1, carbon is generated by the thermal decomposition of raw gas generated during the dry distillation of coal, and the carbon is generated in the carbonization chamber 1.
Adheres to the furnace wall. The amount of gas generated during carbonization is large at the beginning of carbonization, gradually decreases as the carbonization time elapses, and becomes extremely small at the end of carbonization. For this reason, the amount of carbon adhering to the furnace wall of the carbonization chamber 1 increases particularly in the early stage of carbonization.

After the coal carbonization in the coking chamber 1 is completed, the furnace lids attached to both sides of the coking chamber 1 are removed, and then the high-temperature coke is extruded horizontally to the coke discharge side by an extruder. The coke is received by the fire extinguishing vehicle via the coke guide vehicle, and the coke is extinguished. Coke is produced by sequentially repeating the above operation for each carbonization chamber 1 of the coke oven 3.

Here, coal is charged into the coking chamber 1 provided in the coke oven 3 from several tens to as many as 100 units, for example, every five units in order in consideration of carbonization efficiency and workability. The coke that has been carbonized is discharged from the coking chamber 1 every five gates in the order of coal charging. For this reason, when charging into the coking chamber 1a in which coal is charged is completed, the coking chamber 1a is then charged.
From the coking chamber 1 adjacent to the coking chamber 1 at the fourth gate. The number of the coking chambers 1 installed in the coke oven 3 is, for example, 39 orches in the coke oven, and the number of the coke ovens 3 including the two coke ovens reaches as many as 78 units. Further, since each chamber has four charging holes 5, four charging holes 5 are provided.
Is 312 pieces.

The coke produced in each coking chamber 1 over a period of about 10 hours is discharged from each coking chamber 1 at intervals of about 10 minutes in accordance with the order of charging coal, and the coke is charged into each coking chamber 1. It will be charged according to the order at intervals of about 10 minutes.
In such a so-called block operation, basically, the relation between the coking chamber 1a for charging the current coal and the coking chamber 1b for discharging the coke is always at a predetermined interval, for example, five ports. .

In the present embodiment, when coke is produced in the coke oven 3, in order to remove carbon adhering to the furnace wall of the coking chamber 1, for example, the coal-equipped vehicle 6 is used as a running body to remove carbon. A lid removing device 20 and an air supply lance device 21 are mounted in groups of four corresponding to the four charging holes 5. The four lid removing devices 20 and the air supply lance device 21 are used to count 5 from the adjacent charging hole 5 when the coal loading vehicle 6 is stopped at the position of the carbonization chamber 1a in the order of charging coal. Each of the extension frames 23 extending away from the gate and corresponding to the position of the coking chamber 1b in the order of discharging the coke, that is, the extending frame 23 extending in the direction in which the coking chambers 1 are arranged in the gantry frame 6b of the coal-equipped car 6 The device 20 and the air supply lance device 21 are installed (see FIG. 6).

The structure of the carbon removing device 20 will be described. As shown in FIG.
Roller 25 on lifting guide rail 24 that extends vertically downward from
The elevating unit 26 is attached to the elevating unit 26, and the elevating unit 26 is guided by an elevating guide rail 24 so as to be able to ascend and descend. Also,
An elevating cylinder device 27 is attached to the elevating guide rail 24. The elevating cylinder device 27 is arranged with its shaft facing up and down, protrudes the piston rod 27a downward, and has the tip of the piston rod 27a. The section is connected to the lifting section 26. By operating the elevating cylinder device 27, the elevating part 26 can be moved up and down freely.

A swivel 28 composed of an L-shaped frame is supported on the lift 26. That is, the vertical portion 28a of the turntable 28 is pivotally supported about the vertical axis with respect to the lift 26, and the turntable 28 can turn left and right by the turning motor 30 supported by the lift 26. I have. Swivel table 28
The horizontal portion 28b extends laterally from the elevating portion 26, and projects downward from the lower surface of the horizontal portion 28b to support a rif mag 29 for magnetizing the loading lid. The swivel
The drive means for turning the 28 is not limited to the turning motor 30,
It may be constituted by a known rotary cylinder device or the like.

As shown in FIG. 1, the air supply lance device 21 and its support structure have a vertically movable guide rail 31 extending downward from the extension frame 23 in parallel with the vertically movable guide rail 24. An elevating frame 32 is installed so as to be able to elevate and lower, and a hydraulic elevating cylinder device 33 is attached to the upper part of the elevating guide rail 31. The elevating cylinder device 33 is arranged with its axis up and down, protrudes the piston rod 33a downward, and connects the tip end of the piston rod 33a to the elevating frame 32.
By operating the lifting cylinder device 33, the lifting frame 32
Can be moved up and down freely.

Further, the lifting frame 32 is provided with a vertical support rod 18 extending downward. As shown in FIG. 2, the vertical support rod 18 is provided with a lifting ring 19 fitted on its outer periphery in the vertical direction. It is slidably arranged. The ring-shaped air header 14 is supported concentrically via a plurality of support members 34 arranged radially around the elevating ring 19,
The upper ends of the four air supply lances 15 are connected to each other at intervals in the circumferential direction of the ring-shaped air header 14 so that the inclination angles thereof can be adjusted and airtight.

An air supply lance 15 is attached to the ring-shaped air header 14.
As means for airtightly connecting the inclination angle of the air supply header and the air supply lance 15 as shown in FIG. On the other hand, the lance expanding / contracting rods 17 interposed between the lower end of the air supply lance 15 and the lower end of the vertical support bar 18 are connected using connection pins 16 provided at both ends. A communication port 14a is provided in a portion of the ring-shaped air header 14 covered with the ring portion 15a, and a sealing material 36 is provided between the inner surface of both ends of the ring portion 15a and the outer surface of the ring-shaped air header 14. Is interposed. Thereby, the inclination angle of the air supply lance 15 can be adjusted while keeping the air supply lance 15 airtight with respect to the ring-shaped air header 14.

The lifting ring 19 has a bracket 19a.
Expansion and contraction cylinder device installed on the lifting frame 32 via
A piston 39 is connected to the ring-shaped air header 14 via an air supply hose 35. When the expansion / contraction cylinder device 22 is operated to expand and contract the piston rod 22a, the elevating ring 19 is guided by the vertical support rod 18 to move up and down, whereby the ring-shaped air header 14 moves up and down via the supporting member 34. When the ring-shaped air header 14 moves up and down, the lower end of the air supply lance 15 and the lower end of the vertical support rod 18 are connected by the connection pins 16 arranged at both ends of the lance expansion / contraction rod 17,
The air supply lance 15 rotates along the outer circumference of the ring-shaped air header 14 via a ring portion 15a provided at the upper end thereof, whereby the inclination angles of the four air supply lances 15 are enlarged and reduced. When the air supply lance 15 is on standby above the charging hole 5, the piston rod 22a of the expansion / contraction cylinder device 22 is contracted, and the inclination angles of the four air supply lances 15 with respect to the vertical are reduced. It is in a reduced state.

Here, four air supply lances 15 are arranged on the outer periphery of the ring-shaped air header 14 via the ring portion 15a for the following reason. As shown in FIG.
The charging hole 5 provided in the carbonization chamber 1 has a truncated quadrangular pyramid shape in which the lower part of the portion where the charging lid 8 is set is inclined downward.
Therefore, the attached carbon 38 attaches particularly particularly to the corners of the charging hole 5, so that the air supply lance 15 approaches the four corners around the charging hole where the amount of the attached carbon is large. Note that the number of air supply lances 15 is not limited to four, but can be further increased according to the state of the carbon 38 attached to the charging hole 5. The compressed air supplied from the compressor 39 constituting the air supply device via the air supply hose 35 passes through the communication port 14a provided in the ring-shaped air header 14 and the air supply lance 15 through the ring portion.
And is ejected from a plurality of air ejection nozzles 37 arranged in the longitudinal direction of the air supply lance 15.

Next, the operation of the present invention will be described. The discharge of the coke that has been carbonized is completed, the coal-charging truck 6 is moved to the position of the coking chamber 1a in the order of coal charging, and the lid charging machine 9 for charging coal disposed in the coal-charging truck 6 is operated. Rifumag 9a
After removing the charging lid 8a, the coal in the coal loading hopper 7 is cut out using the coal feeding feeder 10 and charged into the carbonization chamber 1a through the charging hole 5. At this time, the lid removing device 20 and the air supply lance device 21 supported on the end of the coal-equipped vehicle 6 in the traveling direction are located above the carbonization chamber 1b for discharging the fifth coke from the carbonization chamber 1a. It is located in.

Then, during the operation of charging coal into the coking chamber 1a,
The coke in the carbonization chamber 1b that has been dry-distilled is discharged to make it an empty kiln state. After the coke discharge from the coking chamber 1b is completed,
When the furnace lids are attached to both ends of 1b, in this embodiment, 4
Using the lid removing device 20, the loading lids 8b respectively closing the four charging holes 5 provided in the coking chamber 1b from which the coke has been discharged are individually removed. That is, the turning motor 30
To turn the swivel table 28 to make the reflex mag
After the target 9a is moved above the charging lid 8b, the piston rod 27a of the elevating cylinder device 27 is extended to lower the rif mag 29 to contact the charging lid 8b. At this time,
By leaving the rif mag 29 in the ON state, the iron charging lid 8b is magnetically attached. Further, the piston dod 27a of the lifting / lowering cylinder device 27 is contracted to raise the rif mag 29, the loading lid 8b is removed from the loading hole 5, and the turning motor 30 is operated to move the swivel table 28 to the horizontal position of the loading lid 8b. Evacuate to

Subsequently, the piston rod 33a of the lift cylinder device 33 provided in the air supply lance device 21 is extended to guide the lift frame 32 to the lift guide rail 31, thereby moving the air supply lance 15 downward. Is lowered and inserted into the charging hole 5. When the ring-shaped air header 14 has passed through the minimum diameter portion of the charging hole 5, the lifting cylinder device
The operation of 33 is stopped so that the air supply lance 15 faces the charging hole 5. Next, the piston rod 22a of the expansion / contraction cylinder device 22
When the elevating ring 19 is guided by the vertical support rod 18 and moved downward, the ring-shaped air header 14 descends via the support member 34.

The lower end of the air supply lance 15 and the vertical support rod 18
The lower end of the lance expansion / contraction rod 17 is connected by connecting pins 16 provided at both ends of the lance expansion / contraction rod 17, so that the lowering of the ring-shaped air header 14 causes the air supply lance 15 to pass through the ring 15a provided at the upper end. As a result, the air supply lance 15 rotates along the outer periphery of the ring-shaped air header 14, thereby increasing the inclination angle of the four air supply lances 15 with respect to the vertical. As shown in FIG. 5, four air supply lances 15 facing the inside of the charging hole 5 are extended along the four corners which are enlarged and inclined below the charging hole 5 where the attached carbon 38 is large. As described above, the operation of the expansion / contraction cylinder device 22 is stopped.

Subsequently, the compressor 39 installed on the extension frame 23 is operated to supply compressed air (pressure can be adjusted within a range of 0 to 5 kg / cm ² ) from the compressor 39 to supply an air supply hose 35 and a ring-shaped air header. The air is guided to the air supply lance 15 via 14, and air is forcibly ejected from an air ejection nozzle 37 disposed in the longitudinal direction of the air supply lance 15. The air ejected from the air ejection nozzle 37 is mainly blown to the corner of the charging hole 5 with a large amount of carbon attached, and the attached carbon around the charging hole is efficiently removed by combustion or separation. Since the inside of the carbonization chamber 1 located below the charging hole 5 has a high temperature, the attached carbon is removed by spontaneous combustion only by contact with air.

Forcibly supply air for 1-2 minutes, at most 5
After removing the adhering carbon 38 mainly at the corners in the charging hole 5 after stopping the operation, the compressor 39 is stopped, and the piston rod 22a of the expansion / contraction cylinder device 22 is contracted to operate.
The inclination angle of the air supply lance 15 with respect to the vertical is reduced. And the piston rod 33 of the lifting cylinder device 33
a is contracted to raise the air supply lance 15 and the charging hole 5
Evacuate it above.

Subsequently, the turning motor 30 is operated to turn the turning table.
28, the rif mag 29 magnetically attached to the loading lid 8b is horizontally moved again above the target carbonization chamber 1b, and the piston rod 27a of the lifting cylinder device 27 is extended to operate the rif mag 29. By lowering and approaching the charging hole 5 and turning off the rif mag 29, the magnetically magnetized iron charging cover 8b is put on the charging hole 5 and the lifting cylinder device 27 is further lowered.
The piston rod 27a is retracted to retract the rif mag 29 upward. This makes it possible to complete the operation of removing the adhering carbon during the coal charging operation in a short time.

Then, when the current coal charging operation is completed, the lid removing machine 9 provided on the coal charging side is operated to load the charging lid 8a into the charging hole 5 of the carbonization chamber 1a into which the coal is charged by the rif mag 9a. Put on. Further, the above-described operation is performed by moving the coal-equipped vehicle 6 to the coking chamber 1 where the next coal is charged, that is, the coking chamber 1b in which coke has been extruded and adhered carbon has been removed. Thus, in the embodiment of the present invention, while maintaining the coal charging and coke extrusion work by the conventional block operation,
In other words, even if the coal charging interval is set to about 10 minutes as in the past and operated, as a part of the block operation, the deposited carbon around the charging hole where carbon is most easily deposited can be reliably and easily removed. .

Injecting air to remove the adhered carbon may lead to a decrease in the temperature in the carbonized chamber 1b. However, the temperature rise in the carbonized chamber 1b due to the temperature rise due to the combustion of the adhered carbon may occur. Is suppressed, and the occurrence of furnace body damage for the operation of removing adhered carbon is suppressed. Moreover,
As described above, since only the supply is forcibly performed at a predetermined timing, the device for removing the adhering carbon has a simple configuration including only the lid removing device 20 and the air supply lance device 21.

By using the running vehicle as the coal-equipped vehicle 6, the
Is moved to the coking chamber 1 where the coal is charged, the lid removing device 20 and the air supply lance device 21 are automatically installed at the position of the coking chamber 1 where the carbon is removed, so that the control is simplified accordingly. . Of course, the carbon removing lid removing device 20 and the air supply lance device 21 may be supported and moved by an original traveling vehicle. As described above, the lid removing device 20 and the air supply lance device 21 for removing carbon
When the coal is charged into the carbonization chamber 1 located on the rearmost side in the traveling direction, the carbon removal operation is not performed synchronously, but this is performed, for example, in 86 times. 1
This occurs at a rate of about 10 degrees, and a time loss of about 5 minutes for not being synchronized does not matter.

Note that the rif mag 9a of the lid removing machine 9 for charging coal is used.
It is also possible to remove the charging lid 8b covering the carbonization chamber 1b for removing adhering carbon by using, or to remove manually in some cases. Lid removing machine 9 for charging coal
Is used, the rif mag 9a of the lid removing machine 9 for charging coal is used.
After removing the charging lid 8b by using the above, it is necessary to run the coal loading car 6 and stop the air supply lance device 21 at the position of the charging hole 5 from which the charging lid 8b has been removed to remove the attached carbon. is there. Therefore, there is a time loss for moving the coal truck 6, but only the air supply lance device 21 is installed on the extension frame 23, and the lid removing device 20 can be omitted, and equipment costs can be reduced. There are benefits that can be saved.

After the carbon removal around the charging hole of the coke oven is performed by the carbon removing apparatus of the present invention, the inner wall of the carbonization chamber including the inner wall of the charging hole is coated with a glass coating agent to prevent carbon from adhering. If the technique is used in combination, the amount of carbon deposited can be reduced, so that the carbon removal time by the carbon removal apparatus of the present invention can be further reduced.

[0040]

As described above, according to the apparatus for removing carbon around the charging hole of a coke oven according to the present invention, the elevating ring is supported by the elevating ring via the supporting member by elevating the elevating ring along the vertical support rod. When the ring-shaped air header goes up and down,
A plurality of air supply lances are connected to each other by a pin between a lower end of the ring-shaped air header and a lower end of the vertical support rod via a ring portion arranged at intervals in a circumferential direction of the ring-shaped air header. The air supply lance is rotated via the rod, and the inclination angle of the air supply lance can be freely expanded and contracted.

Therefore, if the angle of inclination of the air supply lance with respect to the vertical is reduced, the air supply lance can be inserted into and pulled out of the downwardly extending charging hole. After inserting the air supply lance into the charging hole, the inclination angle of the air supply lance can be increased so that the air supply lance can be approached in accordance with the downward expansion inclination. For this reason, the plurality of air ejection nozzles arranged in the longitudinal direction of the air supply lance are maintained at substantially the same distance from the inner wall surface of the charging hole extending downward.

In addition, it is possible to blow the blowout air from each of the air blowout nozzles disposed in the longitudinal direction of the air supply lance to a location where there is a large amount of attached carbon around the charging hole which is enlarged and inclined downward. Since it is possible, the deposited carbon can be efficiently removed by burning and exfoliation without causing adverse effects on the furnace body such as joint breakage due to a portion of the brick having little attached carbon.

According to the present invention, it is possible to remove adhering carbon around the charging hole of the coke oven in a short time without damaging the oven wall by simple means.

[Brief description of the drawings]

FIG. 1 is a side view showing a carbon removing device around a coke oven of the present invention.

FIG. 2 is a perspective view showing an air supply lance according to the carbon removing device of the present invention.

FIG. 3 is a partially enlarged view showing a portion A in FIG. 2;

FIG. 4 is a perspective view showing a state of carbon adhesion around a charging hole in a coke oven.

FIG. 5 is a perspective view showing a state in which an air supply lance according to the carbon removing device of the present invention is inserted into a charging hole.

FIG. 6 is a side view showing a coke oven according to the embodiment of the present invention.

FIG. 7 is a front view showing a coke oven according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coalization chamber 2 Combustion chamber 3 Coke oven 4 Furnace wall 5 Charging hole 6 Charging truck 7 Charging hopper 8 Charging lid 9 Covering machine 10 Coal feeder 11 Charging coal layer 12 Rising pipe 13 Air collecting pipe 14 Ring-shaped air Header 15 Air supply lance 16 Connection pin 17 Lance expansion / contraction rod 18 Vertical support rod 19 Lifting ring 20 Lid device 21 Air supply lance device 22 Expansion / contraction cylinder device 23 Extension frame 24, 31 Elevating guide rail 25 Roller 26 Elevating part 27, 33 Lifting cylinder device 28 Swivel table 29 Lift mag 30 Rotating motor 32 Lifting frame 34 Support member 35 Air supply device 36 Sealing material 37 Air jet nozzle 38 Adhered carbon 39 Compressor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Ryuzo Wakimoto 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. Chome (without address) Mizushima Works, Kawasaki Steel Corporation (72) Inventor Tadakatsu Kishi 1-chome, Mizushima, Kawasaki-dori, Kurashiki City, Okayama Prefecture (without address) Inside Mizushima Works, Kawasaki Steel Corporation

Claims (4)

[Claims] 1. An air supply for forcibly supplying air in a charging hole of a coking chamber which is supported by a movable body movable in a direction in which a coking chamber is arranged on a coke oven so as to be able to move up and down and is in an empty kiln state. In a carbon removal device around a coke oven charging hole provided with a lance device, the air supply lance device is guided by a lifting guide rail vertically downwardly extending from the moving body, and is disposed so as to be vertically movable by a lifting device. A lifting frame, and a lifting ring arranged so as to be able to move up and down along a vertical support bar supported by the lifting frame and extending downward,
A ring-shaped air header which is concentrically supported around the elevating ring via a support member and has a plurality of communication ports arranged at intervals in a circumferential direction; and a communication port provided on the ring-shaped air header. A plurality of air supply lances, each of which is connected in an airtight manner so that the inclination angle can be adjusted via a ring portion arranged at intervals in the circumferential direction so as to cover the air supply nozzles and in which air ejection nozzles are arranged in the longitudinal direction. A lance expansion / contraction rod rotatably connected to the lower end of the air supply lance and the lower end of the vertical support rod via pins at both ends;
A coke oven charging hole characterized by comprising a lifting device installed downward on the lifting frame and connected to the lifting ring so as to be able to move up and down, and an air supply device connected to the ring-shaped air header. Carbon removal equipment. 2. A coke oven charging hole periphery, wherein four air supply lances according to claim 1 are arranged so as to be accessible to four corner portions of the charging hole having a large amount of deposited carbon. Carbon removal equipment. 3. An air supply lance device according to claim 1, and a vertically movable and swivelable detachable mounting lid for closing a charging hole of a carbonization chamber supported by said moving body and brought into an empty kiln state. A carbon removing device around a charging hole of a coke oven characterized by comprising a lid removing device. 4. The apparatus for removing carbon around a charging hole of a coke oven according to claim 1, wherein the movable body is a coal-charging truck or a special truck traveling on a coke oven.