JP2003049170A - Apparatus and method for removing carbon sticking to top space of carbonization chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method of efficiently burning and removing the carbon sticking to the ceiling of the coke oven. SOLUTION: In the apparatus 10 for burning and removing the carbon sticking to the top space of the carbonization chamber in which the outlet for blowing out the oxygen-containing gas toward the carbon sticking to the ceiling near the charging hole of the carbonization chamber is formed on the prescribed position of the lance, an up-blowing means 20a having the upward path 20b for blowing the gas fed into the lance upward is installed so that the oxygen- containing air fed into the inside of the lance is allowed to change the flow upward and blown out of the outlet into the carbonization chamber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for removing carbon adhering to the top space of a carbonization chamber, and is particularly suitable for use in removing carbon adhering to the ceiling of a carbonization chamber near a coal charging port. To a carbon adhering carbon removal device.

[0002]

2. Description of the Related Art When coke is produced from coal,
Manufactured by charging raw coal into the carbonization chamber through a charging port formed in the upper part of the coke oven, and using the heat of the combustion chambers located on both sides of the coal to dry-distill the coal. To be done.

By the way, after the coke is extruded by the extruder, the carbon generated by the carbonization of coal adheres more than necessary to the vicinity of the charging port of the carbonization chamber and the wall surface of the furnace wall. Is regularly removed.

In recent years, as a method for removing adhered carbon,
A cylindrical lance is inserted from the coal charging port, and air (oxygen-containing gas) is blown toward the carbon adhering to the charging port or the furnace wall from the blow-out port formed on the circumferential surface of the lance so that the adhered carbon Methods have been developed to burn away.

As such a combustion removing method, there is known a method in which one lance is moved up and down to selectively use the combustion removal at the charging port and the combustion removal at the furnace wall. However, in this method, it is necessary to separately remove the carbon adhering to the charging port and the carbon adhering to the furnace wall, so the total time required to remove all the carbon adhering to the carbonization chamber becomes longer. As a result, the operating rate of the coke oven decreased, which was a factor in the reduction of coke production.

Moreover, a new operation mode for moving the lance up and down must be added to the control system of the carbon combustion removing device to which the lance is attached, which complicates the design of the control circuit of the device.

Therefore, as another conventional technique for solving such a problem, as in "Lance nozzle structure for carbon combustion removing device for carbonization chamber of coke oven" of Japanese Utility Model Laid-Open No. 63-94934, the upper and lower parts of the lance are described. You can use the one with a detachable nozzle that projects outward on the outer surface, or you can use the outlet for the inlet and the outlet for the furnace wall with different diameters according to the carbon adhesion situation every time you remove carbon. It is known to form a lance on the circumferential surface.

These are for simultaneously burning and removing the carbon adhering to the charging port of the carbonization chamber and the furnace wall by the air blown from the openings of the nozzles at the top and bottom of the lance and the air blown out. By the way, during such simultaneous combustion,
The attachment balance of carbon adhering to the inlet and the furnace wall after removal, which changes depending on operating conditions such as the temperature in the furnace, is emphasized.

This is to leave a proper amount of brick joint seals at the inlet and the furnace wall, respectively, and this balance is also
In the former case, the nozzle is exchanged to change the opening area and the opening direction of the opening, and in the latter case, the diameter of the charging port and the outlet of the furnace wall are changed according to the carbon adhesion situation.

However, in the former case where the nozzle is provided on the outer surface of the lance, since the nozzle is projected to the outside, when the lance is taken in and out of the lance, it collides with the loading port and breaks the surrounding bricks or the nozzle. It may be damaged. Further, in order to be able to deal with various situations of carbon adhesion, it was necessary to always have a large number of nozzles having different opening areas and blowing angles.

Further, in the latter case of forming the blowout port every time the carbon is removed, there is a problem that the cost for modifying the lance is required every time the attached carbon is removed, resulting in a high maintenance cost.

In order to solve such a problem, the applicant of the present application has found that the lance circumferential surface is blown out to the inlet of the carbonization chamber or the carbon adhering to the furnace wall by blowing a gas containing oxygen to the inlet. , And an apparatus for removing carbon adhering to the top space of the carbonization chamber, which is provided with an air volume adjusting body for adjusting the air volume of the gas blown out from the outlet to the furnace wall side.
It was previously proposed in No. 38573.

[0013]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the case of the adhered carbon combustion removal device proposed in No. 573, no device was devised to direct the air blown out from the lance to the ceiling part of the coke oven.
There is a problem that the carbon adhering to the ceiling portion cannot be efficiently burned and removed. The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to efficiently burn and remove carbon adhering to the ceiling part of the furnace top space of the carbonization chamber.

[0014]

According to the present invention, there is provided an apparatus for removing carbon deposits in the top space of a carbonization chamber for spraying a gas containing oxygen toward carbon attached near the ceiling near the inlet of the carbonization chamber. In an apparatus for removing carbon deposits in the top of a carbonization chamber where a gas outlet is formed at a predetermined position on the lance, an upward passage for allowing the gas fed inside the lance to flow upward is provided. It is characterized in that a blowing means for the formed ceiling is provided. Another feature of the present invention is that the blow-out means for the ceiling is arranged on the outer peripheral surface of the lance. Another feature of the present invention is that the ceiling blowing means is disposed inside the lance. Another feature of the present invention is that an air volume adjusting member having an air volume adjusting port overlapping the gas outlet is housed inside the lance, and the air amount adjusting member is moved by a moving means. , Adjusting the polymerization state of the gas blowout port and the air flow rate adjusting port,
It is characterized in that the amount of the gas containing oxygen blown out from the ceiling blowing means can be adjusted.

In the method for removing carbon adhering to the furnace top space of the carbonization chamber of the present invention, a gas containing oxygen is blown from the lance toward the ceiling near the charging port of the carbonization chamber, and the furnace top space of the carbonization chamber is blown. In the method of burning and removing the carbon adhering to, the gas containing oxygen sent to the inside of the lance was changed to the upward flow by the upward passage provided in the ceiling blowing means to make the upward flow. The gas containing oxygen is blown upward from a gas outlet formed in the lance so that carbon adhering to the furnace top space of the carbonization chamber is burned and removed.

[0016]

Since the present invention has the above-mentioned technical means, the gas containing oxygen fed into the inside of the lance is changed into an upward flow by the upward passage provided in the blowing means for the ceiling, and goes upward. Since it becomes a flow and is blown out from the gas outlet formed in the lance, a gas containing oxygen can be satisfactorily blown toward the carbon adhering to the vicinity of the ceiling near the charging port of the carbonization chamber. Thus, it becomes possible to satisfactorily burn and remove the carbon attached to the furnace top space of the carbonization chamber. Further, according to another feature of the present invention, since the amount of the gas containing oxygen blown out toward the carbon adhering to the vicinity of the ceiling near the charging port of the carbonization chamber can be adjusted, it is possible to adjust the amount according to the adhering condition of the carbon. Delicate carbon can be removed.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the apparatus and method for burning carbon adhering to the furnace head space of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an enlarged cross-sectional view of an essential part showing a usage state of a device for removing and adhering carbon adhering to a furnace top space of a carbonization chamber according to a first embodiment of the present invention, and FIG. FIG. 3 (a) is an enlarged front view of an essential part showing a state in which the opening of the outlet is adjusted so that the inlet side is large and the furnace wall side is small, and FIG. 3 (b) shows that the inlet side and the furnace wall side are almost the same. FIG. 4 is an enlarged front view of an essential part showing a state where adjustment is made so that the opening of the outlet is the same, and FIG. 4 is a diagram showing in detail the characteristic part of the present embodiment.

First, with reference to FIGS. 1 to 4, an apparatus for burning and removing adhered carbon in a top space of a carbonization chamber according to a first embodiment of the present invention will be described. As shown in FIG. 2, an apparatus 10 for removing adhered carbon combustion (hereinafter referred to as a lance) in the coking chamber furnace top space portion according to the first embodiment of the present invention is provided along a rail 12 on a coke oven 11. Only four carbon combustion removing devices 13 are provided on the moving charging vehicle so as to move up and down in correspondence with the charging port 15 provided at the upper part of the carbonization chamber 14.

In the carbon combustion removing device 13, the air, which is an example of the gas containing oxygen from the blower device 17 mounted on the moving carriage, is lanced by the air supply system 18 branched into four at the front side. Supply to 10.

As shown in the detailed explanatory view of FIG. 1, each lance 10 is a cylindrical body having a flange 19 formed in its upper opening, and the carbonization chamber is formed on the circumferential surface of the lance near the middle portion in the length direction. A blowout port 20 for blowing air toward the carbon C1 attached near the charging port 14 is formed. Further, a plurality of blowout ports 22 for blowing air to the carbon C2 adhering to the furnace wall 21 (see FIG. 2) are formed in the lower circumferential surface of the lance in the longitudinal direction.

In the lance 10 according to the present embodiment, a pair of left and right long lengths, which is an example of an air volume adjusting member for adjusting the air volume of the air blown from the outlet 20 on the inlet side and the outlet 22 on the furnace wall side. Elevating plates 23 are arranged, and guide members 24 of the elevating plates 23 are provided at relative positions on the inner peripheral surface of the lance 10 (see FIG. 3).

Each elevating plate 23 is curved along the inner peripheral surface of the lance 10, and a flange is formed at each upper end. In the vicinity of the upper part of each lifting plate 23, a charging-side air volume adjusting port 25 that overlaps with the blowing port 20 to the charging side is formed. A furnace wall side air flow rate adjusting port 26 is formed so as to overlap the blowout port 22.

Both air volume adjusting ports 2 formed on the lifting plate 23
The intervals of 5 and 26 are adjusted so that the amount of air blown from the blow-out port 20 to the charging port side to the charging port 15 can be adjusted to be larger than the amount of air blown from the blowing port 22 to the furnace wall side to the furnace wall 21. It is slightly larger than the distance between both outlets 20 and 22. In addition, in order to perform the same adjustment, the space between the air flow rate adjusting ports 25 and 26 may be slightly smaller than the space between the air outlets 20 and 22.

These lance 10 and a pair of lift plates 23
Can be moved up and down by electric or manual winches 29 and 30 attached to the moving carriage via wires 27 and 28, respectively. Further, the wire 28 for the lifting plate 23 has a tip branching into one lifting plate 23 and the other lifting plate 23, and the winch 30 raises and lowers both lifting plates 23 by the same amount at the same time. Has become.

Next, the characteristic part of the apparatus for burning and removing adhered carbon in the furnace top space of the carbonization chamber of the present invention will be described in detail with reference to FIG. The adhering carbon combustion removing device 10 in the top space of the carbonization chamber of the present embodiment is provided with a ceiling blowing means 20a so as to close the outside of the blowing port 20 to the charging side.

The ceiling blowing means 20a flows through the upward passage 20b and the upward passage 20b for guiding the air blown from the blowing outlet 20 to the loading side upward along the outer wall surface of the lance 10. It has a blowout port 20c for the ceiling for blowing out the received air to the outside.

Next, the operation of the adhering carbon combustion removing device 10 in the top space of the carbonization chamber according to the first embodiment of the present invention will be described. As shown in FIG. 1, the carbon combustion removing device 13 is moved to a predetermined carbonization chamber 14 by a moving carriage, and then the wires 27 and 28 are led out from the respective winches 29 and 30 by the same length, and the corresponding measures are taken. Each lance 10 is inserted into the charging port 15 to be inserted.

At this time, the insertion depth of the lance 10 is such that the blowing port 20 toward the charging side is arranged at the charging port 15 and the furnace wall 2
1 is the depth at which the outlet 22 to the furnace wall side is arranged. Then, the blower device 17 is connected via the air supply system 18.
When air is supplied to each lance 10, the arrow 2
As shown in 0d, the air passes through the inlet side air flow rate adjusting port 25 and the outlet side 20 toward the inlet side, and the air passes through the upward passage 2
It flows into 0b.

Since the pressure in the lance 10 is very high, the inlet side air flow rate adjusting port 25 and the outlet port 20 to the inlet side are provided.
The air that has passed through goes toward the side of the lance 10. However, in the lance 10 according to the present embodiment, the blowing means 20a for the ceiling is arranged outside the blowing port 20 to the charging side, so that the charging side air volume adjusting port 25 and the charging side to the charging side. The air that has passed through the outlet 20 is directed upward through the upward passage 20b.

As described above, the ceiling outlet 20c is formed in the upper portion of the ceiling outlet 20a, and the air flowing upward in the upward passage 20b is indicated by the arrow 20d. After passing through the ceiling outlet 20c, it is blown obliquely upward into the carbonization chamber.

As a result, the air is favorably blown to the carbon C1 adhering to the ceiling portion near the charging port 15, and the carbon C1 adhering to this vicinity is blown.
Will be satisfactorily burned out.

At this time, in the adhering carbon combustion removing apparatus for the furnace top space of the carbonization chamber of the present embodiment, the amount of air blown out from the blowing port 20 to the charging side can be adjusted, so that the charging port can be adjusted. It is possible to blow an effective amount of air for combustion removal according to the state of adhesion of carbon C1 attached to 15 and the ceiling portion, and it is possible to shorten the time spent for combustion removal.

The other air that has reached the lower part of the lance 10 has a furnace wall side air flow rate adjusting port 26 and a furnace wall side blowing port 22.
The carbon C2 adhering to the furnace wall 21 is burned and removed by being sprayed on the carbon C2 adhering to the furnace wall 21 after passing through and.

By the way, as described in the section of the prior art,
In order to burn carbon at the inlet and furnace wall at the same time, in order to leave an appropriate amount of brick joint seal, the balance of carbon adhered to both sites after removal, which changes depending on operating conditions such as furnace temperature Is emphasized.

In order to realize this adhesion balance, in the first embodiment, the wire 2 by the winch 30 is used.
The amount of air blown from the blow-out port 20 to the charging port side is blown to the furnace wall 21 from the blow-out port 22 to the furnace wall side by adjusting the derivation length of 8 to move up and down the pair of lifting plates 23 at the same time. The inlet side air flow rate adjusting port 25 and the furnace wall side air flow rate adjusting port 26 so as to be larger than the generated air flow rate by an appropriate amount.
Is adjusted to be slightly different from the heights of the blow-out port 20 toward the inlet side of the lance 10 and the blow-out port 22 toward the furnace wall side to adjust the balance of the opening areas of the blow-out ports 20 and 22.

As a result, the charging port 1 is removed each time the adhering carbon is removed, as in the conventional means for forming an outlet according to the condition of the adhering carbon for each carbon burning removal operation.
Since the lance does not have to be modified so that the blowout port to the 5 side and the blowout port to the furnace wall side have a suitable shape, maintenance cost of the lance can be reduced.

FIG. 3 shows the opening balance between the outlet 20 on the side of the charging port and the outlet 22 on the side of the furnace wall in the first embodiment. In FIG. 3A, the outlet 20 to the charging side is fully opened, and the outlet 22 to the furnace wall side is opened by about 1/4.

Further, in FIG. 3B, the blow-out port 20 toward the charging port 15 side and the blow-out port 22 toward the furnace wall side are opened by approximately 3/4 respectively. However, this is an example, and the opening balance is appropriately changed according to the attachment state of the attached carbons C1 and C2.

In this way, each of the outlets 20,
The amount of air blown out from the nozzle 22 can be adjusted at the same time by raising and lowering the lift plate 23 by the winch 28. It is not necessary to adjust the opening degree for each, and it is possible to automatically and simultaneously adjust the outlets 20 and 22.

The amount of air flowing toward the furnace wall is set within the control range of the air pushing resistance of the blower device 17 and the soot concentration discharged from the rising pipe 34 of the carbonization chamber 14. In addition, after adjusting the air flow balance, the attached carbon C1,
The blowing time by the blower device 17 is arbitrarily changed according to the adhesion state of C2.

However, it is preferable that the initial distribution ratio of the air volume is set to a ratio capable of burning and removing the maximum adhered amount. Furthermore, when the blower device 17 has a constant air flow rate, the total opening area of the blowout ports 20 and 22 per lance must be constant. This is because when the total opening area is reduced, the amount of air supplied is reduced, and as a result, the combustion removal rate is reduced.

Next, with reference to FIG. 5, a second embodiment of the apparatus for removing carbon deposits in the top space of the carbonizing chamber of the present invention will be described. Although the ceiling blowing means 20a in the above-described first embodiment is arranged on the outer peripheral surface of the lance 10, in the present embodiment, it is directed to the ceiling on the lift plate 23 arranged inside the lance 10. Blowing means 2
An example in which 3a is arranged is shown.

Similar to the above ceiling blowing means 20a of the ceiling blowing means 23a, an upward passage is formed, and the air flowing into the ceiling blowing means 23a is directed upward as shown by an arrow 23b. As it passes through the passage, it is caused to flow upward, and is blown out from the blow-out port 20 toward the loading side toward the adhering carbon C1.

As described above, according to the adhering carbon combustion removing device 100 in the top space of the carbonization chamber of the second embodiment, the ceiling blowing means 23 is provided inside the lance 10.
Since a is provided, the portion protruding from the outside of the lance 10 can be eliminated.

As a result, even if the size of the charging port 15 is small, the blowing means 23a for the ceiling can be provided, and the carbon C1 adhering to the ceiling portion near the charging port 15 can be efficiently used. Can be removed by burning.

Next, the adhering carbon combustion removing device for the top space of the carbonization chamber according to the third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 6, in the adhering carbon combustion removing apparatus for the furnace top space of the carbonization chamber of the third embodiment, an inner cylinder 41 having a diameter slightly smaller than the lance 40 is used as an air cylinder 42 which is another example of the moving means. The rod 43 is rotated in and out.

With such a structure, the inlet side air flow rate adjusting port 25 and the furnace wall side air flow rate adjusting port 26 formed in the inner cylinder 41.
Is overlapped with a predetermined amount on the outlet 20 to the inlet side of the lance 40 and the outlet 22 to the furnace wall side. The rotation direction of the inner cylinder 41 is not limited to this, and may be, for example, an oblique direction.

The embodiment of the present invention has been described above.
The present invention is not limited to these embodiments, and even if there are design changes and the like without departing from the spirit of the present invention, they are included in the present invention. For example, the air volume adjusting body is not limited to the above example, but may be any other member having a shape capable of adjusting the air volume.

Further, in the embodiment, the winch is adopted as the moving means of the lance and the air volume adjusting member, but the invention is not limited to this, and any other means capable of moving up and down or moving them may be manually or electrically driven. It does not matter what kind.

Further, in the embodiment, as the air volume adjusting member, a long elevating plate having an arcuate cross section and a cylindrical inner cylinder are shown. However, without being limited to this, the inlet side air volume adjusting port A member having any shape may be used as long as it can form a furnace-side air volume adjusting port.

Further, in the above-described embodiment, the outlet 20 to the charging side and the outlet 2 to the furnace wall side are provided.
Although the example in which the blown air volume can be adjusted by changing the size of 2 is shown, the air volume adjustment mechanism is not necessarily provided.

[0052]

As described above, according to the present invention, the oxygen-containing gas fed into the lance is changed to the upward flow by the upward passage provided in the ceiling blowing means. As a result, the gas containing oxygen is blown out from the gas outlet formed in the lance, so that the gas containing oxygen can be satisfactorily blown toward the carbon adhering to the vicinity of the ceiling near the charging port of the carbonization chamber. It is possible to satisfactorily burn and remove the carbon attached to the furnace top space of the carbonization chamber. Further, according to another feature of the present invention, since the amount of the gas containing oxygen blown out toward the carbon adhering to the vicinity of the ceiling near the charging port of the carbonization chamber can be adjusted, it is possible to adjust the amount according to the adhering condition of the carbon. Delicate carbon can be removed.By doing so, it is possible to burn and remove carbon while leaving only an appropriate amount of brick joint seals, which can improve the working environment around the coke oven and improve the life of the coke oven. Can be extended.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part showing a first embodiment of the present invention and showing a state of use of an apparatus for removing and burning carbon adhering to a furnace top space of a carbonization chamber.

FIG. 2 is an enlarged cross-sectional view of an essential part showing a usage state of the adhered carbon combustion removal device in the furnace top space of the carbonization chamber.

FIG. 3 (a) is an enlarged front view of an essential part showing a state in which the opening of the outlet is adjusted so that the inlet side is large and the furnace wall side is small, and FIG. 3 (b) shows the inlet side and the furnace wall side. FIG. 4 is an enlarged front view of a main part showing a state in which the adjustment is performed so that the openings have substantially the same opening.

FIG. 4 is a cross-sectional view of a blowing device for a ceiling showing a characteristic part of the present embodiment in detail.

FIG. 5 is a cross-sectional view showing the second embodiment of the present invention and showing a modification of the ceiling blowing device.

FIG. 6 shows a third embodiment of the present invention and is a diagram showing a modification of the opening adjustment mechanism.

[Explanation of symbols]

10 Adhesive carbon combustion removal device in the top of carbonization chamber 11 coke oven 12 rails 13 Carbon burning removal device 14 Carbonization chamber 15 Booth 17 Blower device 18 Air supply system 19 flange 20 Blow-out opening to the entrance side 20a Ceiling blowing means 20b upward passage 20c Ceiling outlet 20d arrow 21 furnace wall 22 Blowout port 23 Lifting plate 23a Ceiling blowing means 24 Guide member 25 Air inlet side air volume adjustment port 26 Furnace wall side air volume adjustment port 27 wires 28 wires 29 Manual winch 30 Manual winch 40 Adhesive carbon combustion removal device in furnace top space of carbonization chamber 41 inner cylinder 42 Air cylinder 43 rod Carbon adhering near the C1 charging port C2 Carbon attached near the furnace wall

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shin Matsuura             5-3 Tokai-cho, Tokai-shi Nippon Steel Corporation             Inside Nagoya Steel Works F-term (reference) 4K056 AA16 EA06

Claims (5)

[Claims] 1. A carbon adhering to the top space of a carbonization chamber, in which a gas outlet for spraying a gas containing oxygen toward the carbon adhering near the ceiling near the charging port of the carbonization chamber is formed at a predetermined position of the lance. In the combustion removing device, a coalescence chamber furnace top space is provided, which is provided with a blow-out means for a ceiling in which an upward passage is formed so that the gas fed into the lance is caused to flow upward. Part removal carbon burning removal device. 2. The ceiling blowing means is disposed on the outer peripheral surface of the lance.
A device for removing adhered carbon in the furnace top space of the carbonization chamber described in 1. 3. The adhering carbon combustion removing device for a furnace top space of a carbonization chamber according to claim 1, wherein the ceiling blowing means is disposed inside the lance. 4. An air flow rate adjusting member having an air flow rate adjusting port overlapping the gas blowing port is housed inside the lance, and the air flow rate adjusting member is moved by a moving means, whereby the gas blowing port and the air flow rate are moved. The carbon adhering to the top space of the carbonization chamber according to claim 1, wherein the amount of the oxygen-containing gas blown out from the ceiling blowing means can be adjusted by adjusting the polymerization state with the adjusting port. Combustion removal device. 5. A method for burning and removing carbon adhering to a furnace top space portion of the carbonization chamber by blowing a gas containing oxygen from the lance toward a ceiling near a charging port of the carbonization chamber, wherein The oxygen-containing gas delivered to the ceiling is changed into an upward flow by an upward passage provided in the ceiling blowing means, and the upward-flowing oxygen-containing gas is formed in the lance. A method for burning and removing carbon adhering to the furnace top space of the carbonization chamber, characterized in that the carbon adhering to the furnace top space of the carbonization chamber is burned and removed by blowing it upward from the above.