JPH10265779A - Removal of carbon from coal-charging hole of carbonization chamber in coke oven and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mechanize an operation for finely obliquely opening a charging lid for covering a coal-charging opening formed in a carbonization chamber to be subjected to a next coke-discharging operation, thereby improving the efficiency for removing carbon deposited to the inside of the carbonization chamber. SOLUTION: This method for removing carbon deposited to the coal-charging opening of a carbonization chamber in a coke oven comprises disposing a rotation support 28 on a carriage 20 vertically moving on a pair of vertical guide rails 19 disposed under a trestle frame for a coal-charging vehicle running above the oven of the coke oven, rotating the rotation support 28 with a hydraulic cylinder 24 for the rotation to move a lifting magnet 44 from a waiting position to a place above a coal- discharging opening 6, inclining a T-shaped lever 35 with a hydraulic cylinder 32 for the inclination to change a coal-charging lid 11 magnetically adhered to the lifting magnetic 44 supported on the lower end of the T-type lever 35 through a lever link mechanism from a horizontal state to an inclined state, and subsequently sucking air from the gap of the finely inclined opening to burn off carbon adhered to the inside of the carbonization chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a coke oven in a coke oven, in which a charging lid covering a charcoal hole provided in a coking chamber in which coke is to be discharged next time is slightly opened, and a cover is opened from the gap. TECHNICAL FIELD The present invention relates to a method and an apparatus for removing carbon in a carbonization hole of a coking chamber in a coke oven for burning and removing carbon attached to a carbonization chamber by sucking air by natural ventilation.

[0002]

2. Description of the Related Art A coal bed charged in a coking chamber of a coke oven is carbonized from an adjacent combustion chamber by indirect heating through furnace wall bricks over ten and several hours. The gas generated in the carbonization chamber during the carbonization time passes through the upper space of the coal bed, and is recovered from a riser pipe provided at a position eccentric from the furnace lid on the coke extrusion side. In the carbonization chamber, carbon is generated by the thermal decomposition of raw gas generated during the dry distillation of coal, and this carbon adheres to the furnace wall of the carbonization chamber. It is said that the amount of carbon deposited is 600 μm in one dry distillation. Each time carbonization is repeated, the deposited carbon grows, and the deposited carbon causes problems such as deterioration of heat transfer, decrease in the amount of charged coal, and increase in coke extrusion resistance, leading to trouble in the operation of the coke oven. .

[0003] Therefore, 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 deposition. Therefore, the following carbon removal technology has been conventionally known. That is, as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 61-231088, after extruding coke from the carbonization chamber, the extruder side and the guide wheel side are not mounted on the extruder side and the guide wheel side, and left for several hours as an empty kiln carbon removing means In some cases, carbon is removed by contact with the outside air and carbon is peeled off due to a decrease in furnace temperature. But,
This conventional technology has large furnace heat loss because both ends of the furnace are open.In addition, the brick in the furnace is apt to break due to a sharp decrease in the furnace temperature. Production loss is inevitable.

[0004]

The ceiling of the carbonization chamber has the largest amount of carbon deposition, and the coal hole is formed on a complicated surface, so that the carbon is difficult to remove. Therefore, in order to remove the carbon adhering to the ceiling wall with the largest amount of adhesion in the carbonization chamber, the coal carbonization in the carbonization chamber was completed, and the equipment installed on the ceiling of the carbonization chamber was ordered to discharge coke next. The charging lid closing the coal hole is manually removed by an operator to open the coal hole. As a result, air has been sucked in through the open coal-charging hole by natural ventilation, and carbon attached to the ceiling of the carbonization chamber has been removed by burning.

[0005] Coal charging into the coking chamber, which is arranged in the coke oven and reaches several tens to hundreds, is performed in order, for example, every six units in consideration of the carbonization efficiency and workability, and carbonized. Coke is discharged from the coking chamber every six units according to the order of coal charging. For this reason, when charging into the coking chamber where the coal is being charged is completed, the next discharge of coke from the coking chamber is the fifth one counted from the coking chamber adjacent to the coking chamber. The number of carbonization chambers installed in the coke oven is one, for example, provided with 39 units, and the number of coke ovens consisting of two units is as high as 78 units. Further, since each chamber has four coal holes, there are 312 coal holes.

[0006] The coal charged to each coking chamber is carbonized over ten and several hours, and the produced coke is discharged from each coking chamber at intervals of about 10 minutes according to the order of coal charging. Accordingly, the coke is charged into each of the coking chambers in an order of about 10 minutes at an interval. A great deal of labor is required to open the charging lid of the carbonization chamber, which is in the order of discharging the coke, in accordance with the timing of charging coal into the carbonization chamber, and then manually open the charging lid of the worker. The work environment is also a problem, and it has been desired to automate and mechanize the work. In addition, there is a danger of a worker crashing when a worker works on the ceiling in a situation where the coal hole is opened, and automation and mechanization have been strongly demanded from the viewpoint of safety.

According to the present invention, coke is discharged from a carbonization chamber,
Using the time for charging coal, the charging lid that closes the charging hole on the ceiling wall is slightly opened to remove carbon adhering to the carbonization chamber, which is in the order to discharge coke next. And the method of burning and removing carbon and making it slightly open,
It is an object to provide a device that can be closed.

[0008]

According to a first aspect of the present invention, there is provided a coal-equipped vehicle provided with an adsorber for adsorbing a charging lid of a coal-charging hole while being separated from a coal-equipped hopper. When the charcoal truck is stopped at the coaling position of the coking chamber charging hole after coke discharge, the adsorber is positioned at the coking chamber charging hole at the coke discharging time, the charging lid is tilted by the adsorber, and the charcoal is charged. The coke oven is characterized in that the charging lid is tilted and placed in the hole to make it slightly open, the riser canopy of the carbonization chamber at the time of the coke discharge is opened, and the coal charging hole is placed under ventilation. This is a method for removing carbon from the coal hole in the coking chamber.

According to a second aspect of the present invention, a pair of ascending and descending guide rails vertically disposed at one end in the traveling direction of a gantry frame of a coal-carrying car traveling on a coke oven are provided. A lift truck guided by the lift guide rails by a lift cylinder attached to the center of a support frame disposed above a pair of lift guide rails, and bearings provided above and below the lift truck. A swing support base rotatably supported in a horizontal direction via a vertical swivel shaft mounted on a swing shaft, and a cylinder connected to a swing lever supported by the swing support base and provided on the lift truck A turning cylinder supported by the support table and a lever bearing provided on a horizontal support frame projecting from the lower end of the support table are supported rotatably in a vertical direction around a fulcrum and extend upward. A T-shaped lever having a central lever and a horizontal lever extending on both sides; a tilting cylinder connected to the central lever and disposed at an intermediate portion in a height direction of the turning support base; and a tilting cylinder on one side of the horizontal lever. A roller-type connecting link having a roller at a middle portion and a connecting link connected to the other side of the horizontal lever at a lower portion; and a roller-type connecting link provided at a lower portion of the horizontal frame. A curved guide frame of a downward warp that guides a roller provided from below, a support link connected to a lower end of the roller type connection link, and a support link chain connected to a lower end of the connection link, respectively. Rifmags for magnetizing the loading lid with both ends supported, and vertically provided on the lower surfaces of the overhang frames extending to both sides from the horizontal support frame, respectively. A carbon removal instrumentation Nyufuta BiHiraku device of the coking chamber Sosumiana in coke oven, characterized by comprising a pair of support rods.

[0010]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described in detail with reference to FIG. As shown in FIG. 5, in the coke oven 1, the coking chamber 2 and the combustion chamber 3 include a furnace wall brick 4.
A plurality (for example, four) of coal filling holes 6 are arranged in the longitudinal direction of the ceiling wall 5 constituting each carbonization chamber 2 as shown in FIG. And coke oven 1
On the furnace, a coal-equipped vehicle 7 that runs via wheels 47 in the cross direction of a number of carbonization chambers 2 is disposed. The coal loading car 7 equipped with the four coal loading hoppers 8 is moved to the position of the coking chamber 2 in the order of charging coal, and firstly, the lid removing machine 15 arranged in the coal loading car 7 is operated to adsorb the lid. The charging lid 11 is removed from the coal charging hole by using an electromagnet type lift magnet 9 (hereinafter referred to as “rif mag”) which is a vessel.

Subsequently, the coal stored in each coal hopper 8 is cut out using the coal feeder 16 and charged into the coking chamber 2 through the coal hole 6. After the coal charged into the coking chamber 2 is leveled and flattened by a leveler (not shown) to form a predetermined coal bed 10, the lid removing machine 15 is operated to move the coal into the coal hole 6 with the rif mag 9. Cover the loading lid 11. The charged coal bed 10 formed in the coking chamber 2 is heated by the heat transfer of the furnace wall brick 4 by the temperature rise in the combustion chamber 3 disposed on both sides of the coking chamber 2 and carbonized in ten and several hours. You.

The gas generated in the carbonization chamber 2 during the carbonization period passes through the upper space of the coal bed 10 and passes through the riser pipe 12 provided at a position eccentric from the furnace lid on the coke extrusion side, to form a dry main body. 13 and finally stored in the gas holder. In the carbonization chamber 2, carbon is generated by the thermal decomposition of raw gas generated during the dry distillation of coal, and this carbon adheres to the furnace wall 14 of the carbonization chamber 2. 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 14 of the carbonization chamber 2 increases particularly in the early stage of carbonization. After the coal carbonization in the coking chamber 2,
After removing the furnace lids (not shown) mounted on both sides of the coking chamber 2, high-temperature coke is extruded horizontally to the coke discharge side by an extruder and received by a fire extinguishing car via a coke guide car to extinguish the coke. Coke is produced by repeating such operations sequentially for each carbonization chamber 2 of the coke oven 1.

According to the present invention, when coke is produced in the coke oven 1, four coking holes 6 provided in the coking chamber 2 are removed in order to remove carbon attached to the furnace wall 14 of the coking chamber 2. Then, four charging lid fine opening devices 17 are installed in the coal loading vehicle 7. When the coal loading car 7 is stopped in accordance with the position of the coking chamber 2 where the coal has been charged, the charging lid slightly opening device 17 is separated from the adjacent coal loading hole 6 by 5 gates, and then coke Are disposed in the coal-charging truck 7 apart from the coal-charging hopper 8 so as to correspond to the position of the carbonization chamber 2 in the order of discharging the coal.

As shown in FIGS. 1 to 4, each of the loading lid fine opening devices 17 is provided with a pair of vertically moving guide rails 19 on a frame 18 of the coal loading vehicle 7.
The lifting carriage 20 is set up and down via rollers 21 during the movement. An elevating (hydraulic) cylinder 24 is disposed at the center of a support frame 22 provided above the elevating guide rail 19 via a bearing 23.
Is connected via a shaft to a bearing 25 attached to the upper rear surface of the lift truck 20. Further, a vertical turning shaft 27 is attached to upper and lower bearings 26 provided on the surface side of the lifting and lowering carriage 20, and a turning support 28 is supported on the vertical turning shaft 27 so as to be turnable. On the other hand, a turning hydraulic cylinder 30 is attached to a cylinder support table 29 provided on the lifting carriage 20. The turning hydraulic cylinder 30 is connected to a turning lever 31 provided on the turning support table 28. ing.

The turning support base 28 is provided with a hydraulic cylinder 32 for tilting horizontally at an intermediate portion thereof and a horizontal support frame 33 at a lower end portion. A T-shaped lever 35 is supported on a lever bearing 34 provided on the horizontal support frame 33 via a shaft. A central lever 35A extending upward and constituting the T-shaped lever 35 is provided with the tilt hydraulic cylinder 32.
The horizontal link 35B extending to both sides is connected with a connecting link 36 with a roller and a connecting link 37 at both ends thereof in a downward direction, respectively. A roller 38 is provided at an intermediate portion of one of the connecting links 36 with rollers, and the roller 38 can move along a curved guide rail 39 of a downward warp provided at the lower end of the horizontal support frame 33. ing. The connecting link with roller 36 and the connecting link 37 are connected via pins 40 respectively provided at the lower ends.
Connected by 41.

A support link 42 is connected to the lower end of the connection link 36 with rollers, and a support link chain 43 is connected to the lower end of the connection link 37.
The distal ends of the support link chain 43 and the support link chain 43 are supported at both ends thereof by a rif mag 44 for magnetizing the loading lid 11 via pins.
The horizontal support frame 33 is provided with overhanging frames 46 on both sides, and a support rod 45 extending downward is provided on the lower surface of the lower end of each overhanging frame 46.

Next, the operation of the present invention will be described. After the carbonized coke has been discharged, the coal-charging truck 7 is moved to the position of the carbonization chamber 2 where the coal has been charged, and the lid removing machine 15 arranged in the coal-charging truck 7 is operated. After removing 11, the coal in coal hopper 8 is supplied to coal feeder 16.
And charged into the carbonization chamber 2 through the coal charging hole 6. At this time, the charging lid fine opening device 17 installed on the end of the coal loading vehicle 7 in the traveling direction is the fifth from the coal loading hole 6 next to the coal loading hole 6 in the order of coal loading. Next, it is located above the coal charging hole 6 provided in the carbonization chamber 2 in the order of discharging the coke.

In the present invention, the four charging lid fine opening devices 17 installed in the coal loading vehicle 7 are used to respectively open four coal loading holes 6 provided in the carbonization chamber 2 where coke is to be discharged. The following operation is performed to make the loaded cover 11 slightly open. First, the turning hydraulic cylinder 30 attached to the cylinder support base 29 arranged on the lifting carriage 20 is extended to operate the turning lever.
The swivel 31 is pivoted about the vertical swivel shaft 27, and the rif mag 44 is moved from the standby position to above the charging hole 6 as shown in FIG. Subsequently, the elevating hydraulic cylinder 24 is extended to lower the elevating trolley 20 along the elevating guide rail 19, and a support rod 45 vertically disposed on the lower surface of the distal end of the overhang frame 46.
Is grounded on the upper surface of the ceiling wall 5 of the carbonization chamber 2 and
44 is brought into contact with the charging lid 11. At this time, since the rif mag 44 is switched on, it is magnetized on the iron charging lid 11.

Further, the tilting hydraulic cylinder 32 provided at an intermediate portion of the turning support base 28 is operated to extend, and the central lever 35A of the T-shaped lever 35 is rotated about the axis of the lever bearing 34 as a fulcrum, thereby turning the horizontal lever. The connecting link with roller 36 connected to one side of 35B is lowered and the connecting link 37 is raised.
Thereby, the roller 38 provided at the intermediate portion of the connecting link 36 with the roller is guided and moved along the curved guide rail 39 of the downward warpage, and the connecting link 36 with the roller is tilted as shown by the dotted line in FIG. Rif mag via support link 42
At the same time, the other side of the rif mag 44 is relatively raised via the support link chain 43 in cooperation with the connection link 37 and the connection link 41, so that one side of the The charging lid 11 is tilted at the entrance of the charging hole 6, and the charging lid 11 is tilted and placed in the coal loading hole 6 to be in a slightly open state.

In this case, when the inclination angle θ of the charging lid 11 with respect to the horizontal at the entrance of the coal filling hole 6 is in the range of 30 to 40 °, the inclined state can be stably maintained. It becomes a tilted state. Therefore, even if the rif mag 44 is switched off in this tilted state and detached from the loading lid 11, the tilted state can be stably maintained. In some cases, the lid is charged with the Rif Mag 44 left switched on
It is also possible to leave the magnetized state at 11. At the same time, the canopy 48 of the riser pipe 12 provided at a position eccentric from the furnace lid on the coke pushing side of the coking chamber 2 is opened as shown by a dotted line (see FIG. 6). As a result, the air sucked by natural ventilation from the gap of the coal charging hole 6 slightly opened by the inclined charging lid 11 passes through the upper space of the high-temperature coke layer carbonized in the carbonization chamber 2. The carbon adhering to the furnace wall 14 and the ceiling wall 5 of the carbonization chamber 2 is ignited by the inhaled air and burns. As a result, the adhered carbon is burned and removed, and the combustion gas is released from the canopy 48 via the riser 12.
Is released into the atmosphere from

When the charging of coal into the coking chamber 2 in the order of charging coal is completed, the lid removing machine 15 provided on the coal charging side is operated to cover the charging lid 11 with the rif mag 9 on the coal charging hole 6. To close the coal loading hole 6. At the same time, the charging lid slightly opening device 17 is operated in a procedure reverse to that described above. That is, by contracting the tilting hydraulic cylinder 32, the charging lid 11 is returned from the inclined state to the horizontal state by the switch-on riff mag 44, and
Close up. Thereafter, the rif mag 44 is turned off to be demagnetized. Then, the lift cylinder 44 and the support rod 45 are raised by contracting the lifting hydraulic cylinder 24.
Subsequently, the hydraulic cylinder for turning 30 is contracted to operate the
By turning 44 to the standby position, the operation of slightly opening the loading lid 11 is completed.

The charging lid fine opening device 17 for the coal loading vehicle 7
Is not limited to the one shown in the drawings, and can be arbitrarily changed, for example, by changing the positional relationship on the plane by 90 degrees. Each hydraulic cylinder can be replaced with another drive cylinder such as an electric cylinder.

[0023]

According to the present invention as described above,
The charging lid of the coal hole is slightly opened and the riser canopy of the carbonization chamber is opened to introduce air from the slightly opened part. Carbon can be burned and removed. Further, according to the apparatus of the present invention, the charging lid covering the charging hole provided in the carbonization chamber in the order in which coke is discharged next can be easily tilted into a slightly open state and a horizontal state without a complicated process. Since the closed state can be achieved, the work is released from manual work under adverse environmental conditions, and an improvement in work efficiency is achieved. In addition, by mechanizing the opening operation of the coal filling hole, it is possible to reliably remove carbon adhering to the coking chamber where coke is discharged every time coal is charged. Can be reduced. Furthermore, since carbon removal is performed with the charging lid slightly opened, the amount of ventilation is limited, and adverse effects such as hot gas applied to the furnace wall of the coking chamber and occurrence of joint breakage due to rapid cooling can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing a charging lid slightly opening device of the present invention.

FIG. 2 is a front view showing the charging lid slightly opening device of the present invention.

FIG. 3 is an enlarged plan view showing the direction of arrow AA in FIG. 1;

FIG. 4 is a plan view showing a turning cylinder portion connected to the turning lever in the direction of arrow BB in FIG. 1;

FIG. 5 is a front view showing a coal-equipped vehicle in which the charging lid slightly opening device of the present invention is arranged.

FIG. 6 is a side view showing a coal-equipped vehicle in which the charging lid slightly opening device of the present invention is arranged.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coke oven 2 Coking chamber 3 Combustion chamber 4 Furnace wall 5 Ceiling wall 6 Charging hole 7 Charging car 8 Charging hopper 9 Electromagnetic lift magnet (rif mag) 10 Charging layer 11 Charging lid 12 Rising pipe 13 Dry main 14 Furnace wall 15 Cover remover 16 Coal feeder 17 Charging lid slightly opening device 18 Mounting frame 19 Elevating guide rail 20 Elevating trolley 21 Roller 22 Support frame 23 Bearing 24 Elevating cylinder 25 Bearing 26 Bearing 27 Vertical swivel shaft 28 Swivel Cylinder support 30 Cylinder support 30 Swivel hydraulic cylinder 31 Swivel lever 32 Tilt hydraulic cylinder 33 Horizontal support frame 34 Lever bearing 35 T-shaped lever 35A Central lever 35B Horizontal lever 36 Connecting link with roller 37 Connecting link 38 Roller 39 Curved guide rail 40 pin 41 connection link 42 support link 43 support link chain 44 rif mag 45 support rod 46 overhang frame 47 wheels 48 canopy

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Makoto Hamaki 1-chome, Kawasaki-dori, Mizushima, Kurashiki-shi, Okayama Pref. 23 at 958 Aryan

Claims (2)

[Claims] An adsorber for adsorbing a charging lid of a coal loading hole is provided on a coal loading vehicle at a distance from a coal loading hopper, and the coal loading truck is stopped at a coal loading position of the coal loading hole after the coke is discharged. When
The adsorber is positioned in the coking hole of the coking chamber at the time of coke discharge, the charging lid is tilted by the adsorber, the charging lid is tilted and placed in the charging hole, and the coke discharging time is set. Removing the riser canopy of the coking chamber and leaving the coking hole under ventilation conditions. 2. A pair of ascending and descending guide rails vertically disposed at one end in the traveling direction on a gantry frame of a coal-carrying truck traveling on a coke oven, and an upper portion of the pair of ascending and descending guide rails. A lifting truck guided by the lifting guide rails by a lifting cylinder attached to the center of a support frame disposed at the center, and a vertical turning shaft mounted on bearings provided above and below the lifting truck. While being connected to a turning support base that is supported so as to be able to turn in the horizontal direction and a turning lever that is supported by the turning support base,
A pivotable cylinder supported by a cylinder support provided on the lift truck and a lever bearing provided on a horizontal support frame projecting from a lower end of the pivotable support are pivotally supported in a vertical direction with a fulcrum as a fulcrum. A T-shaped lever having a central lever extending upward and a horizontal lever extending on both sides; a tilting cylinder connected to the central lever and disposed at an intermediate portion in the height direction of the turning support base; A roller-type connecting link connected to one side of the lever and provided with a roller at an intermediate portion, and a connecting link connecting the connecting link connected to the other side of the horizontal lever at a lower portion, and are provided at a lower portion of the horizontal frame; A curved guide frame having a downward warp for guiding a roller provided in the roller-type connection link from below; a support link connected to a lower end of the roller-type connection link; Each of the two ends is supported via a support link chain connected to the lower end of the connection link. A charging lid fine opening device for removing carbon from a carbonization hole in a coke oven, comprising a pair of support rods provided.