JP2014077055A - Device for removing attachment at oven port of coke oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for removing attachments at an oven port of a coke oven, which can remove, with good workability, the attachments stuck to both downside corner parts of the oven port in the width direction and can surely install an oven cover after coke is pushed out of the coke oven.SOLUTION: A device 10 for removing attachments at the oven port of the coke oven includes oven cover frame cleaning machines 14, 15 which are used respectively for cleaning the oven cover frames 12, 13 arranged in side edge parts of the oven port 11 and which are arranged respectively on one or both of a coke pushing machine and a coke guide car so that the attachments 18, 19 stuck to both downside corner parts 16, 17 of the oven port 11 in the width direction are removed. Nozzles 22, 23 for jetting gas toward the bottom parts 24, 25 of the attachments 18, 19 stuck to both downside corner parts 16, 17 of the oven port 11 in the width direction are disposed respectively in the lower parts of the oven cover frame cleaning machines 14, 15.

Description

  The present invention relates to an apparatus for removing deposits from a coke oven kiln, and more particularly to an apparatus for removing deposits adhering to both corners in the width direction on the lower side of a coke oven kiln.

Conventionally, in a coke oven, coal is charged into a carbonization chamber and carbonized to produce coke, then the furnace lid of the carbonization chamber is removed, and the produced coke is extruded from one side of the carbonization chamber with a coke extruder, and this coke is On the other side of the carbonization chamber, the furnace work to be received by the coke bucket is performed via a coke guide wheel.
Thus, after the coke-out operation is performed, as shown in FIG. 3 (A), the tar 93 attached to the furnace port (coke furnace furnace port) 91 or the furnace lid 92 of the carbonization chamber 90 is replaced with the above-described tar 93. The furnace lid 92 is attached to the kiln 91 after being removed by a furnace lid frame cleaner or a furnace lid cleaner provided in the coke extruder or coke guide car. Further, the tar adhering to the bottom iron plate 95 at the bottom of the kiln 91 is removed by a scraping device provided at the lower part of the furnace cover frame cleaner, for example, a high-pressure water washing cleaner described in Patent Document 1. Yes. In addition, the number 94 in FIG. 3 (A) is the furnace bottom brick which comprises the floor | bed of the carbonization chamber 90. FIG.

JP-A-8-85792

However, the scraping device and the high-pressure water washing cleaner described above are devices that remove tar adhering to the lower part of the kiln port 91 (mainly the widthwise central part of the kiln port 91), as shown in FIG. The tars (adhered matter) 96 and 97 adhered to both corners in the width direction below the kiln 91 could not be removed. For this reason, the tars 96 and 97 fixed to the corners grow each time the coke out operation is repeated (the amount of adhesion increases), which prevents the furnace lid 92 from being attached to the kiln 91.
The tars 96 and 97 fixed to the corners had to be removed manually in a high temperature environment, and the workability was very poor.

  The present invention has been made in view of such circumstances, and removes deposits adhering to both corners in the width direction on the lower side of the coke oven kiln with good workability, so that the furnace lid can be reliably mounted after being discharged from the furnace. An object of the present invention is to provide a deposit removing device for a coke oven kiln.

The gist of the present invention made to solve the above problems is as follows.
(1) The coke oven kiln provided in one or both of a coke extruder and a coke guide car each provided with a furnace lid frame cleaner for cleaning a furnace lid frame installed at a side edge of a coke oven kiln. A device for removing deposits adhering to both widthwise corners on the lower side of the mouth,
An apparatus for removing deposits from a coke oven kiln, wherein a nozzle for jetting gas toward the bottom of each deposit adhered to both corners in the width direction is provided at a lower portion of the furnace cover frame cleaner.

(2) The apparatus for removing deposits from a coke oven kiln according to (1), wherein the flow rate of the gas injected from the nozzle is set to 900 m / s or more.

(3) The apparatus for removing deposits from a coke oven kiln according to (1) or (2), wherein the gas outlet of the nozzle has a flat shape.

The apparatus for removing deposits from the coke oven kiln according to the present invention has a nozzle that ejects gas toward the bottom of each deposit adhered to both corners in the width direction on the lower side of the coke oven kiln. Since the adherent adhered to the surface can be removed by peeling off from the skirt, it is possible to efficiently remove the adherent as compared with the case where gas is sprayed to other portions of the adherent.
In addition, since the nozzle described above is provided in the lower part of the furnace cover frame cleaner, for example, after the furnace cover frame is cleaned by the furnace cover frame cleaner, the deposit removal operation can be continuously performed. Gas can be reliably blown to the skirt of the kimono.
Therefore, it is possible to remove the deposits adhering to both corners in the width direction on the lower side of the coke oven kiln with good workability and without damaging the surrounding bricks, and to reliably mount the furnace lid after the furnace is discharged.

  Moreover, when the flow rate of the gas sprayed from the nozzle is set to 900 m / s or more, the force for stripping off the adhering material is increased, so that the adhering material removal rate can be increased.

  Then, by making the gas outlet of the nozzle flat and directing the wide (long axis) direction of the nozzle to the longitudinal direction of the carbonization chamber, the gas adhering to the corners can be easily removed in a wider range. Therefore, the deposit removal rate can be further increased.

(A), (B) is a side view which shows the use condition of the deposit removal apparatus of the coke oven kiln which concerns on one embodiment of this invention, respectively, and the front view which shows the use condition of the nozzle of the deposit removal apparatus is there. It is a graph which shows the relationship between the flow rate of the gas injected from a nozzle, and the removal rate of a deposit. (A), (B) is a side sectional view of the coke oven kiln after the furnace unloading operation, respectively, and a front view of the coke oven kiln when the furnace unloading operation is repeated.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 (A) and 1 (B), a coke oven kiln deposit removing device (hereinafter also simply referred to as an deposit removing device) 10 according to an embodiment of the present invention includes a coke oven kiln. A coke extruder (not shown) provided with a furnace cover frame cleaner 14 for cleaning the furnace cover frames 12 and 13 installed at the edges (side edges) on both sides in the width direction of 11 (hereinafter also simply referred to as kiln opening). And a coke guide car (not shown) provided with a furnace cover frame cleaner 15 having substantially the same configuration as the furnace cover frame cleaner 14, respectively, 17 is an apparatus for removing the deposits (particularly tar) 18 and 19 attached to 17. In addition, the coke oven kilns cleaned by the furnace lid frame cleaners 14 and 15 are different kilns provided on the coke extrusion side and the coke outlet side of the carbonization chamber 20, but for convenience of explanation, the same numbers are assigned. ing. This will be described in detail below.

  The coke extruder travels on a rail provided on the coke extrusion side of the coke oven, stops in front of the carbonization chamber 20 to be subjected to coke extrusion, and then is a metal furnace lid frame of the coke extrusion side kiln 11. 12 and 13 is a vehicle in which a metal furnace lid (not shown) is removed, coke in the carbonizing chamber 20 is pushed out by an extrusion ram, and the furnace lid frames 12 and 13 are mounted again. Here, when attaching the furnace cover to the furnace cover frames 12 and 13, the surface of the furnace cover frames 12 and 13 was cleaned and adhered by the furnace cover frame cleaner 14 mounted on the coke extruder. Tar is removed beforehand. In addition, about the furnace cover, the tar adhering to the furnace cover is previously removed by a furnace cover cleaner (not shown).

  The coke guide wheel travels on a rail provided on the coke outlet side of the coke oven, stops behind the carbonization chamber 20 where the coke is extruded, and then a metal furnace lid frame 12 in the kiln port 11 on the coke outlet side. , 13 is a vehicle that removes a metal furnace lid (not shown), receives coke extruded by a coke extruder, and again attaches the furnace lid to the furnace lid frames 12 and 13. Here, when attaching the furnace lid to the furnace lid frames 12 and 13, the surface of the furnace lid frames 12 and 13 was cleaned and adhered by the furnace lid frame cleaner 15 as in the above-described coke extruder. Tar is removed in advance, and the furnace lid is also removed in advance by a furnace lid cleaner (not shown).

The above-described coke extruder and coke guide wheel are provided with a deposit removing device 10 that removes deposits 18 and 19 adhering to the widthwise corner portions 16 and 17 on the lower side of the kiln 11.
In addition, the deposit removing device 10 can also be provided in either one of the coke extruder and the coke guide wheel. However, since the deposits 18 and 19 on the corners 16 and 17 are larger in the coke extruder side kiln than in the coke guide car side kiln, the deposit removing device is attached to the coke extruder. The effect of providing the deposit removing device 10 becomes more prominent when 10 is provided.
Further, the deposits 18 and 19 attached to the corners 16 and 17 are thinner in thickness (height) from the furnace lid frames 12 and 13 of the kiln 11 toward the center in the width direction of the kiln 11 ( It is attached to the bottom iron plate 21 (bottom) of the kiln 11 so that it becomes low.

The deposit removing device 10 includes a plurality (two in this case) of nozzles 22 and 23 and gas supply means (not shown) for supplying gas (air) to the nozzles 22 and 23.
The one nozzle 22 and the other nozzle 23 are capable of injecting gas toward the bottom portions 24 and 25 of the deposits 18 and 19 attached to the widthwise corner portions 16 and 17 of the coke oven kiln 11, respectively. The furnace cover frame cleaner 14 (the same applies to the furnace cover frame cleaner 15) is provided at the front part (furnace direction side) of the lower part (bottom part). Specifically, as shown in FIG. 1 (B), the gas ejection direction (axial center) of each nozzle 22, 23 is set to the horizontal direction so that gas can be ejected obliquely downward from each nozzle 22, 23. Inclined downward, for example, at an angle in the range of about 10 to 30 degrees.

The nozzle 22 (same for the nozzle 23) is tubular and has an inner diameter of, for example, about 15 to 30 mm. Further, the gas outlet of the nozzle 22 may be any of a circular shape, an oval shape, an oval shape, a polygonal shape, and the like, but is preferably flat to easily peel off the deposits 18 and 19. In this case, the wide (major axis) direction of the flat nozzle is directed to the longitudinal direction of the carbonization chamber 20 (the direction orthogonal to the width direction of the kiln 11). The number of nozzles is one with respect to the corner on one side, but may be two or more as required.
Here, the skirt portions 24 and 25 of the deposits 18 and 19 to which the gas is sprayed are regions in front of the deposits 18 and 19 where the deposit thicknesses of the deposits 18 and 19 rapidly increase (regions where the deposit thickness is thin). From 11 furnace cover frames 12 and 13 (corner entrance 11 corners) to the center in the width direction of the entrance 11, for example, a range of about 5 to 15 cm. The deposits 18 and 19 are deposited on the laid iron plate 21. In addition, the width | variety of the kiln 11 is about 40-50 cm, for example.

The gas supply means has a compressor (compressor) for boosting the gas, a pressure accumulation tank filled with the gas ejected from each of the nozzles 22 and 23, and a receiver tank provided between the compressor and the pressure accumulation tank. ing. In addition, the gas supply means is respectively installed on the coke extruder and the coke guide wheel.
The gas supply means described above is not limited to the above-described configuration as long as the flow rate of the gas injected from each nozzle can achieve the target flow rate. For example, the scale can be increased or decreased. You can also For this reason, depending on the configuration of the gas supply means, the installation position can be, for example, a furnace frame cleaner.

An inverted T-shaped pipe is connected to the pressure accumulation tank of the gas supply means when viewed from the front. This pipe is composed of a header pipe 26 connected to the pressure accumulating tank and a nozzle pipe 27 having a central portion in the longitudinal direction connected to the header pipe 26, and nozzles 22, 23 on both sides in the longitudinal direction of the nozzle pipe 27. Are installed respectively.
Here, since the inner diameter of the nozzle pipe 27 is set smaller than the inner diameter of the header pipe 26 (for example, about 20 to 50%), the gas supplied from the pressure accumulating tank to the nozzles 22 and 23 has its pressure. Is further increased, and is supplied to the nozzles 22 and 23.
The piping connecting the pressure accumulating tank and the nozzles 22 and 23 is not limited to the above-described configuration as long as a gas having a target flow velocity can be ejected from the nozzles 22 and 23.

If the flow rate of the gas injected from each nozzle 22, 23 can achieve the flow rate at which the deposits 18, 19 can be peeled off from the respective corners 16, 17, and the furnace cover is mounted on the furnace cover frames 12, 13. Although it will not specifically limit if the removal rate of the deposit | attachment of the grade which does not exert influence on (for example, about 300 m / s (300 m / sec) may be sufficient), 900 m / s or more is preferable. Hereinafter, a description will be given with reference to FIG.
FIG. 2 shows a nozzle (horizontal width: 34 mm, using a depositing device 10 having the configuration shown in FIGS. 1 (A) and 1 (B) and having a flat gas jetting port on the nozzles 22 and 23 for jetting gas. (Vertical width: 15 mm) and the effect of the gas flow rate on the removal rate of deposits. Here, the removal rate is a result obtained by visual observation.

As shown in FIG. 2, the removal rate of deposits can be increased by increasing the flow rate of the gas injected from the nozzle, and in particular, the removal of deposits can be achieved by setting the gas flow rate to 900 m / s or more. It was found that the rate could be about 80% or more (78% or more).
From the above, it is preferable that the flow rate of the gas injected from the nozzle is 900 m / s or more (preferably, 950 m / s or more).
Gas injection is performed toward the bottom of the deposit, but as can be seen from FIG. 1, since this bottom is on the bottom iron plate 21, the flow rate of the gas injected from the nozzle is increased. However, the furnace bottom will not be damaged. Further, as can be seen from FIG. 2, the upper limit of the gas flow velocity is not particularly limited because the deposit removal rate is improved as the flow velocity of the gas injected from the nozzle is increased. However, the upper limit is preferably about 1100 m / s in consideration of the deposit removal efficiency, the manufacturing cost of the deposit removal apparatus, and the like.

  The above-described adhering matter removing apparatus 10 is automatically started and stopped by a control device (not shown) based on a preset program. For example, an operator may perform it.

Next, a method for removing deposits from the coke oven kiln 11 will be described with reference to FIGS. 1 (A) and 1 (B).
First, the coke extruder is moved to the front of the carbonization chamber 20 where the coke was produced and stopped. At this time, the coke guide wheel is also moved to the rear of the carbonization chamber 20 where the coke is extruded and stopped.
Next, the furnace lids installed on both sides of the carbonization chamber 20 are removed from the kiln 11 by the coke extruder and the coke guide wheel, respectively, and the coke in the carbonization chamber 20 is extruded by the extrusion ram of the coke extruder. The coke is received in the coke bucket.

As described above, after performing the furnace discharge operation with the coke extruder and the coke guide car, the furnace cover frame cleaners 14 and 15 mounted on the coke extruder and the coke guide car, respectively, with the furnace cover removed. Is advanced into the carbonization chamber 20 from the outside. At this time, by activating the cleaning function of the furnace cover frame cleaner 14 (also the furnace cover frame cleaner 15), the furnace cover frame 12 installed in the kiln mouth 11 while moving the furnace cover frame cleaner 14 is moved. , 13 is cleaned to remove the attached tar. In addition, about the furnace cover, the tar adhering to the furnace cover is removed by the furnace cover cleaner.
After the cleaning of the furnace cover frames 12 and 13 is completed (cleaning is completed), the cleaning function of the furnace cover frame cleaner 14 is stopped, and the furnace cover frame cleaner 14 is moved backward from the carbonization chamber 20 to the outside. .

Thus, when the furnace cover frame cleaners 14 are retracted from the carbonization chamber 20 to the outside, the deposit removing device 10 is activated.
In addition, starting of the deposit | attachment removal apparatus 10 starts the skirt part of each deposit | attachment 18 and 19 which adhered the gas (air) which blows off from each nozzle 22 and 23 to the width direction corners 16 and 17 of the coke oven kiln 11. 24, 25, for example, using a timer, a preset time from the start of retreat of each furnace cover frame cleaner 14 (0.1 to 2 seconds, preferably the lower limit is 0.3 Second, the upper limit is about 1 second), but may be simultaneous. This is because most of the deposits 18 and 19 are removed by the furnace cover frame cleaner 14 and dropped (mainly tar).

As a result, gas is ejected from the nozzles 22 and 23. When the gas is ejected, bin blow, that is, the gas is pre-pressurized with a compressor (about 0.5 to 0.7 MPa) and filled into the accumulator tank via the receiver tank.
As described above, by moving the furnace frame cleaner 14 and removing the deposits 18 and 19 at the corners 16 and 17 using the gas ejected from the nozzles 22 and 23, the deposits 18 and 19 are removed. 19 is blown away from the inside of the carbonization chamber 20 toward the outside. For this reason, the nozzles 22 and 23 are attached to the furnace cover frame cleaner 14 (the same applies to the furnace cover frame cleaner 15). It is preferable to incline from the base part to the front part of each nozzle 22, 23 in plan view so as to face.

The start-up time of the deposit removal device 10 is based on the moving time of the furnace cover frame cleaner 14, taking into account the time that each corner 16 and 17 can be sprayed on the deposits 18 and 19, for example, a timer. It is preferable to use a predetermined time (about 0.3 to 5 seconds) from the start of the gas spraying of the nozzles 22 and 23.
In addition, you may perform the ejection of the gas from each nozzle 22 and 23, with the furnace cover frame cleaner 14 stopped. This is because the working position of the furnace cover frame cleaner 14 is always determined, so that the relationship between the mounting positions of the nozzles 22 and 23 and the retreat start timing of the furnace cover cleaner 14 If the spray start time is determined, the gas can always be injected at the same position, so that the deposits can be reliably removed.
Thus, after the ejection of gas from the nozzles 22 and 23 is stopped, the furnace cover frame cleaners 14 and 15 are withdrawn from the inside of the carbonization chamber 20 to the outside, and a coke extruder and a coke guide wheel are used. A furnace lid is attached to the furnace lid frames 12 and 13 of the kiln opening 11.

Then, the coke extruder and the coke guide wheel are moved to the next carbonization chamber 20, and the above-described method is repeated.
As described above, by using the deposit removing device 10 at the coke oven kiln at which the nozzles 22 and 23 are provided in the furnace lid frame cleaner 14, both corners in the width direction below the coke oven kiln 11. The deposits 18 and 19 adhering to the parts 16 and 17 can be removed with good workability, and the furnace lid can be mounted reliably after being out of the furnace.

  As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included. For example, a case where the deposit removing device for a coke oven kiln of the present invention is configured by combining a part or all of the above-described embodiments and modifications is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 10: Deposit removal apparatus of coke oven kiln, 11: Coke oven kiln, 12, 13: Furnace frame, 14, 15: Furnace frame cleaner, 16, 17: Corner, 18, 19: Adherent , 20: carbonization chamber, 21: laid iron plate, 22, 23: nozzle, 24, 25: hem, 26: header pipe, 27: nozzle pipe

Claims (3)

Provided in one or both of a coke extruder and a coke guide car each equipped with a furnace cover frame cleaner that cleans the furnace cover frame installed at the side edge of the coke oven furnace, A device for removing deposits adhering to both side corners in the width direction,
An apparatus for removing deposits from a coke oven kiln, wherein a nozzle for jetting gas toward the bottom of each deposit adhered to both corners in the width direction is provided at a lower portion of the furnace cover frame cleaner. The apparatus for removing deposits from a coke oven kiln according to claim 1, wherein the flow rate of the gas injected from the nozzle is set to 900 m / s or more. The apparatus for removing deposits from a coke oven kiln according to claim 1 or 2, wherein the nozzle has a flat gas outlet.

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