Apparatus, method and program for cleaning furnace cover of coke oven

Abstract

To provide an apparatus for cleaning a furnace cover of a coke oven, capable of cleaning the furnace cover of the coke oven according to a contamination degree of deposits.SOLUTION: An apparatus for cleaning a furnace cover of a coke oven has a cleaning part for cleaning the furnace cover of the coke oven, wherein the apparatus includes: a captured image acquisition part for acquiring a captured image in which a portion of the furnace cover to be cleaned of the coke oven is imaged; a reference image acquisition part for acquiring a reference image serving as a standard for cleaning the portion of the furnace cover to be cleaned; a contamination degree information generation part for generating contamination degree information based on the captured image and the reference image; a cleaning time calculation part for calculating a cleaning time according to the contamination degree; and an operation-controlling part for operating the cleaning part according to the cleaning time.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a coke oven lid cleaning device, a lid cleaning method, and a program, which have a cleaning unit for cleaning the lid of a coke oven. [Background technology]

[0002] A coke oven is equipped with a furnace body and a furnace lid that closes the furnace body. The furnace lid is equipped with a seal to prevent gas from leaking from the furnace body. During operation of the coke oven, deposits such as tar and carbon adhere to the area where the seal of the furnace lid meets the door frame.

[0003] If deposits adhere to the seal of the oven lid, a seal failure may occur, which may result in gas leakage from the coke oven. Therefore, a coke oven lid cleaning device is used to remove deposits from the oven lid, etc.

[0004] Coke oven lid cleaners are equipment that removes deposits that have adhered to the seals of the lid when the lid is opened or closed. Patent Document 1 discloses an example of such a coke oven lid cleaning device, which has a high-pressure water cleaning nozzle and a cart equipped with a rotary cutter, and removes deposits by moving the cart up and down while operating these. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-80197 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the degree of adhesion of deposits varies depending on the location of the furnace lid. For example, the upper part of the lid has less accumulated raw materials in the furnace body than the center or lower part of the lid, allowing easier gas passage. The degree of adhesion of deposits tends to vary depending on the ease of gas passage and the manner in which raw materials are accumulated. In addition, cleaning must be completed within the short time it takes to open and close the lid. Therefore, if the lid is cleaned without considering the degree of adhesion of deposits, cleaning may be insufficient, resulting in residual deposits and poor sealing.

[0007] The present invention has been made in view of the above circumstances, and aims to provide a furnace lid cleaning device etc. that is capable of cleaning the furnace lid of a coke oven according to the state of adhesion of deposits. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention has the following features. [1] A coke oven lid cleaning device having a cleaning unit for cleaning a coke oven lid, an image acquisition unit that acquires an image of a portion of the furnace hood of the coke oven that is to be cleaned; a reference image acquisition unit that acquires a reference image that serves as a reference for cleaning the portion of the furnace lid that is to be cleaned; a dirt level information generating unit that generates dirt level information based on the captured image and the reference image; a cleaning time calculation unit that calculates a cleaning time according to the degree of dirt; and an operation control unit that operates the cleaning unit in accordance with the cleaning time. [2] the captured image acquisition unit acquires a plurality of captured images of different areas to be cleaned, the cleaning time calculation unit sets the cleaning time for each captured image in accordance with the degree of dirtiness of the dirt level information; The coke oven lid cleaning device according to [1], wherein the operation control unit operates the cleaning unit at each of the cleaning times. [3] The coke oven lid cleaning device described in [2], wherein the cleaning time calculation unit calculates the cleaning time by weighting according to the position of the lid corresponding to the height direction of the coke oven. [4] a moving unit that moves the cleaning unit to the portion of the furnace lid that is to be cleaned; a position information acquiring unit that acquires the position of the part of the furnace lid to be cleaned and the movement start position of the moving unit; a movement time calculation unit that calculates a movement time based on the position of the part of the furnace lid to be cleaned and the movement start position of the movement unit, The coke oven lid cleaning device according to [2] or [3], wherein the operation control unit operates the cleaning unit according to the movement time and the cleaning time. [5] The coke oven lid cleaning device according to [2] or [3], wherein the cleaning unit is installed for each part to be cleaned. [6] A method for cleaning a coke oven lid having a cleaning unit for cleaning the coke oven lid, comprising: an image acquisition step of acquiring an image of a portion of the furnace roof of the coke oven to be cleaned; a reference image acquisition step of acquiring a reference image that serves as a reference for cleaning the portion of the furnace lid to be cleaned; a dirt level information generating step of generating dirt level information based on the captured image and the reference image; a cleaning time calculation step of calculating a cleaning time according to the degree of contamination; and an operation control step of operating the cleaning unit in accordance with the cleaning time. [7] A computer for controlling the operation of a coke oven roof cleaning device having a cleaning unit for cleaning a coke oven roof, an image acquisition step of acquiring an image of a portion of the furnace roof of the coke oven to be cleaned; a reference image acquisition step of acquiring a reference image that serves as a reference for cleaning the portion of the furnace lid to be cleaned; a dirt level information generating step of generating dirt level information based on the captured image and the reference image; a cleaning time calculation step of calculating a cleaning time according to the degree of contamination; an operation control step of operating the cleaning unit in accordance with the cleaning time; [Effects of the Invention]

[0009] The coke oven hood cleaning device of the present invention includes a cleaning time calculation unit that calculates a cleaning time according to the degree of contamination of the hood, and an operation control unit that operates the cleaning unit that cleans the hood according to the cleaning time. Therefore, it is possible to clean the coke oven hood in a manner that corresponds to the adhesion state of the deposits. As a result, it is possible to efficiently clean the hood by prioritizing cleaning of areas with a large amount of deposits and lowering the priority of areas with a small amount of deposits. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is an explanatory diagram showing the configuration of a coke oven lid cleaning device. FIG. [Figure 2] FIG. 2 is a functional block diagram of a coke oven lid cleaning device. [Figure 3] 1 is a flow diagram of a coke oven lid cleaning method using a coke oven lid cleaning device. [Figure 4] 3. This shows how the dirt level information is generated in the dirt level information generating step S03 in FIG. [Figure 5] FIG. 1 is an explanatory diagram showing how coke is produced in a coke oven. [Figure 6] 4 shows an aspect of the travel time calculation step in step S05 of FIG. [Figure 7] 10 shows the arrangement of a high-pressure water nozzle and a radial cutter according to a modified example. [Figure 8] FIG. 6 is an explanatory diagram showing the configuration of a coke oven lid cleaning device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] (First embodiment) Hereinafter, an embodiment of the present invention will be described. Fig. 1 shows the configuration of a coke oven lid cleaning device 100. As shown in Fig. 1, the coke oven lid cleaning device 100 has a cleaning unit 20 that cleans the lid 10 of the coke oven.

[0012] The furnace hood 10 has a seal plate 11 formed in the shape of a substantially rectangular plate in a plan view, and a plug 12 formed to protrude from one surface of the seal plate 11. The furnace hood 10 is not particularly limited, but is formed, for example, to have a longitudinal length of about 10 m in a plan view.

[0013] The cleaning section 20 has a high-pressure water nozzle 21 that sprays high-pressure cleaning water onto the furnace lid 10, and a radial cutter 22 that has a rotary cutter (not shown).

[0014] The high-pressure water nozzle 21 has a supply unit 23 with a pump that supplies high-pressure cleaning water, and a valve 24 that adjusts the amount of high-pressure cleaning water supplied from the supply unit 23. The radial cutter 22 has an adjustment unit (not shown) that adjusts the rotation speed of the rotary blade.

[0015] The cleaning unit 20 operates a high-pressure water nozzle 21 and a radial cutter 22 to remove deposits such as tar and carbon adhering to the furnace lid 10 .

[0016] The coke oven lid cleaning device 100 has a moving unit 30 that moves the cleaning unit 20. Although the moving unit 30 is not particularly limited, in this embodiment, the cleaning unit 20 moves in the longitudinal direction and the lateral direction of the seal plate 11.

[0017] The moving unit 30 has a driving unit 31 and a connecting unit 32 that connects the cleaning unit 20 and the driving unit 31. The driving unit 31 is configured by, for example, a motor. The connecting unit 32 is a wire, chain, belt, or the like, and is wound up or down by the operation of the driving unit 31.

[0018] The coke oven hood cleaning device 100 has a control unit 40 that controls its operation. In addition, multiple cameras 50 are provided so that they can capture images of the areas of the hood 10 that are to be cleaned. The areas of the hood 10 that are to be cleaned are not particularly limited, but may be, for example, the surface of the hood 10 on which the plug 12 is provided. In this embodiment, multiple cameras 50 are provided to capture images of different areas that are to be cleaned.

[0019] Any number of cameras 50 can be provided depending on the embodiment. The images captured by the cameras 50 may have a resolution and angle of view that allow an operator to visually determine whether or not any deposits are present on the furnace hood 10.

[0020] From this perspective, the camera 50 may be provided so as to capture images of the area to be cleaned divided into multiple sections in the longitudinal direction of the seal plate 11. The division of the area to be cleaned may be appropriately selected depending on the size of the furnace hood 10. For example, if the longitudinal size of the furnace hood 10 is approximately 10 m, it may be divided into an even number of sections between 8 and 32. For example, the area to be cleaned may be divided into 8, 16, or 32 sections.

[0021] Fig. 2 shows functional blocks of the coke oven lid cleaning apparatus 100. As shown in Fig. 2, the coke oven lid cleaning apparatus 100 has a cleaning unit 20, a moving unit 30, a control unit 40, a memory unit 60, and an input / output unit 70. The cleaning unit 20, the moving unit 30, the control unit 40, the memory unit 60, and the input / output unit 70 are connected to each other via a bus B so as to be able to communicate with each other.

[0022] The input / output unit 70 is an interface that connects the coke oven lid cleaning device 100 to external devices so that data can be communicated between them. The input / output unit 70 is connected to a plurality of cameras 50 so that data can be communicated between them.

[0023] The storage unit 60 is a writable nonvolatile memory such as an EPROM. The storage unit 60 is not particularly limited, but may be, for example, a storage device such as an HDD or SSD.

[0024] The memory unit 60 stores images captured by the camera 50, reference data that serves as a standard for the degree of contamination of the furnace lid 10, etc. The captured images are stored in the memory unit 60 together with the time when they were captured by the camera 50.

[0025] The control unit 40 is a computer including a CPU. The control unit 40 controls the operation of the coke oven lid cleaning device 100. The control unit 40 has a captured image acquisition unit 41, a reference image acquisition unit 42, a contamination level information generation unit 43, a position information acquisition unit 44, a travel time calculation unit 45, a cleaning time calculation unit 46, and an operation control unit 47. The captured image acquisition unit 41, the reference image acquisition unit 42, the contamination level information generation unit 43, the position information acquisition unit 44, the travel time calculation unit 45, the cleaning time calculation unit 46, and the operation control unit 47 realize their functions by executing programs stored in the storage unit 60.

[0026] The captured image acquisition unit 41 acquires a captured image of a portion of the coke oven furnace hood 10 to be cleaned. The captured image acquisition unit 41 refers to the storage unit 60 to acquire the captured image.

[0027] The reference image acquisition unit 42 acquires a reference image that serves as a reference for cleaning the area of ​​the furnace lid 10 to be cleaned. The reference image can be, for example, an image of an unused furnace lid 10 or an image of the furnace lid 10 after cleaning has been completed. In addition, multiple reference images may be prepared depending on the degree of dirt. It is preferable that the reference image has the same angle of view as the captured image.

[0028] The contamination level information generating unit 43 generates contamination level information based on the captured image and the reference image. The contamination level information includes the contamination level indicating the degree of contamination of the furnace cover 10 and the priority of cleaning among multiple cleaning target areas. The priority is, for example, evaluated relatively.

[0029] Here, the deposit is a black substance such as tar, as described above. Therefore, the deposit appears darker than the surrounding pixels. Therefore, the contamination level information is generated as requiring cleaning when, for example, the portion of the coke oven lid 10 to be cleaned in the captured image is darker in brightness than the reference image. The contamination level information generation unit 43 generates contamination level information according to, for example, multiple brightness levels. The contamination level information generation unit 43 generates contamination level information according to, for example, three, four, or five levels.

[0030] The position information acquisition unit 44 acquires the position of the part of the furnace hood 10 to be cleaned (hereinafter also referred to as the movement end position of the cleaning unit 20) and the position of the cleaning unit 20 (hereinafter also referred to as the movement start position of the cleaning unit 20). The position of the part of the furnace hood 10 to be cleaned may be stored in advance in the memory unit 60 as, for example, coordinate values. That is, the position information acquisition unit 44 may refer to the memory unit 60 and acquire the position of the part of the furnace hood 10 to be cleaned as coordinate values.

[0031] The position information acquisition unit 44 may detect the position of the cleaning unit 20 based on the amount of operation of the drive unit 31. For example, the amount of winding up of the connection unit 32 by the drive unit 31 and the corresponding coordinate values ​​of the cleaning unit 20 may be stored in the storage unit 60. That is, the position information acquisition unit 44 may acquire the coordinate values ​​as the position of the cleaning unit 20 based on the amount of winding up of the connection unit 32 by the drive unit 31.

[0032] The acquisition of the position of the cleaning unit 20 is not limited to this mode, and the position of the cleaning unit 20 may be measured using a position measuring device such as a Global Navigation Satellite System (GNSS), for example.

[0033] The movement time calculation unit 45 calculates the movement distance based on the movement start position and movement end position of the cleaning unit 20. The movement time calculation unit 45 also refers to the average movement time per predetermined distance of the moving unit 30 stored in the memory unit 60 to calculate the movement time for the movement distance.

[0034] The travel time required for the cleaning unit 20 to travel from the start position to the end position may be stored as a table in the storage unit 60. The travel time calculation unit 45 may calculate the travel time by referring to the table according to the position from the start position to the end position.

[0035] The cleaning time calculation unit 46 calculates the cleaning time according to the degree of dirtiness. For example, it is preferable to set a shorter cleaning time for areas with a low degree of dirtiness than for areas with a high degree of dirtiness. Furthermore, the cleaning time calculation unit 46 may calculate the cleaning time as "0" when the degree of dirtiness of the captured image and the reference image generally matches.

[0036] The cleaning time calculation unit 46 may calculate each of the cleaning times so that the total time of the travel time and the cleaning time falls within a predetermined specified time. The specified time is determined, for example, based on the time required to open and close the furnace lid 10. The cleaning time calculation unit 46 stores the calculated cleaning time in the memory unit 60.

[0037] The operation control unit 47 operates the cleaning unit 20 according to the cleaning time calculated by the cleaning time calculation unit 46. The operation control unit 47 reads the cleaning time from the memory unit 60 and operates the cleaning unit 20 and the moving unit 30.

[0038] 3 shows a flow of the coke oven hood cleaning method using the coke oven hood cleaning device 100. As shown in Fig. 3, the captured image acquisition unit 41 acquires captured images by referring to the storage unit 60 and executes the captured image acquisition step (step S01). That is, the captured image acquisition unit 41 acquires captured images of the part of the coke oven hood 10 to be cleaned.

[0039] The reference image acquisition unit 42 acquires the reference image stored in the storage unit 60 and executes the reference image acquisition step (step S02).

[0040] The dirt level information generating unit 43 generates dirt level information based on the captured image and the reference image, and executes a dirt level information generating step (step S03).

[0041] The position information acquisition unit 44 acquires the positions of the parts of the furnace hood 10 to be cleaned and the position of the cleaning unit 20 stored in the storage unit 60, and executes the position information acquisition step (step S04).

[0042] The travel time calculation unit 45 calculates the travel time based on the position of the part of the furnace hood 10 to be cleaned and the position of the cleaning unit 20, and executes the travel time calculation step (step S05).

[0043] The cleaning time calculation unit 46 calculates the cleaning time according to the degree of dirt and executes the cleaning time calculation step (step S06).

[0044] The operation control unit 47 moves the moving unit 30 to a predetermined part of the furnace lid 10 to be cleaned, thereby executing the first moving step (step S07).

[0045] The operation control unit 47 operates the cleaning unit 20 according to the cleaning time calculated in the cleaning time calculation step of step S06 to perform the cleaning step (step S08). That is, the operation control step is performed by the first movement step of step S07 and the cleaning step of step S08.

[0046] The operation control unit 47 moves the moving unit 30 to a predetermined standby position to execute the second moving step (step S09).

[0047] Fig. 4 shows how contamination level information is generated in the contamination level information generation step of step S03 in Fig. 3. An example of a captured image is shown above Fig. 4. In the captured image, deposit OB is attached from the seal plate 11 to the plug 12.

[0048] The dirt level information generating unit 43 detects dirt from, for example, the difference in brightness between the dirt OB and the reference image. The dirt level information generating unit 43 also sets the dirt level according to the area of ​​the dirt OB in the captured image, and generates dirt level information.

[0049] Furthermore, when the angle of view of the captured image and the reference image are roughly the same, the deposit OB may be extracted by subtracting the shape of the furnace hood 10 in the reference image from the captured image. In FIG. 4, an example of the deposit OB extracted from the captured image is shown below. In this example, the deposit OB is extracted by subtracting the shapes of the seal plate 11 and the plug 12 in the reference image from the captured image. In this way, the deposit OB can also be extracted from the captured image.

[0050] Moreover, the deposits OB are deposited in an irregular shape on the furnace hood 10. Therefore, in the captured image, any irregularly shaped objects attached to the furnace hood 10 may be subjected to image processing so that they are recognized as deposits OB.

[0051] Furthermore, by subtracting the reference image from the captured image, if an outline is detected, the dirt level may be increased, indicating that the area is particularly in need of cleaning.On the other hand, if the captured image and the reference image generally match, the dirt level may be reduced and dirt level information may be generated.

[0052] In order to improve the accuracy of detecting the attached object OB, correction may be performed by image processing. For example, brightness correction may be performed so that the brightness of the captured image when it is captured approaches the brightness of the reference image. For example, if the backgrounds of both images are the same, brightness correction may be performed so that the brightness of the background of the captured image matches the brightness of the background of the reference image. In this way, noise and the like in the captured image can be reduced.

[0053] Fig. 5 shows how coke is produced in a coke oven 13. In the coke oven 13, raw materials are piled up in a furnace body 14. Gas is blown into the furnace body 14 from the bottom. The dashed dotted line in Fig. 5 indicates the gas flow.

[0054] The gas blown into the furnace body 14 is supplied to a refining facility (not shown) via an exhaust system 15 installed on the top of the coke oven 13. Tar, carbon, etc. precipitate as deposits when the furnace lid 10 cools. The deposits accumulate as the coke oven 13 operates.

[0055] As shown in FIG. 5, above the coke oven 13, there is a space between the raw materials and the ceiling of the furnace body 14. Therefore, there are some areas above the furnace lid 10 that are not in contact with the raw materials. There is a tendency for more deposits to adhere to areas that are in contact with the raw materials than to areas that are not in contact with the raw materials. In other words, the upper part of the furnace lid 10 is likely to be less dirty than the lower part. The dirt level information generating unit 43 may generate dirt level information according to the height position of the furnace lid 10. In other words, the dirt level information generating unit 43 may generate dirt level information by assigning a lower dirt level to the upper part of the furnace lid 10 in the height direction than to the lower part.

[0056] In the cleaning time calculation step of step S06, the cleaning time may be calculated according to the degree of dirtiness as follows. For areas to be intensively cleaned, which are relatively highly dirty, the cleaning time should be set longer than the cleaning time for areas to be normally cleaned, which are averagely dirty. The cleaning time for areas to be intensively cleaned should be set, for example, 1.5 times or more the cleaning time for areas to be normally cleaned. Furthermore, the cleaning time for areas to be intensively cleaned should be set at least 5 seconds longer than the cleaning time for areas to be normally cleaned.

[0057] Specifically, it is assumed that there are eight locations to be cleaned on the furnace lid 10 in the longitudinal direction of the furnace lid 10. It is also assumed that a pair of high-pressure water nozzles 21 and a radial cutter 22 move synchronously. Furthermore, it is assumed that the specified time allowed for the cleaning process of the furnace lid 10 is 120 seconds.

[0058] Here, it is assumed that the time required for the pair of high-pressure water nozzles 21 and the radial cutter 22 to move from one location to another adjacent location is 5 seconds. In this case, the time required for the pair of high-pressure water nozzles 21 and the radial cutter 22 to move from one end of the furnace lid 10 to the other end is 35 seconds.

[0059] The cleaning time calculation unit 46 calculates the cleaning time by allocating the time obtained by subtracting 35 seconds for movement time from 120 seconds to the time for cleaning each area. For example, assume that there are two areas with a high degree of dirtiness, three areas with a low degree of dirtiness, and three areas that do not require cleaning.

[0060] For example, the cleaning time calculation unit 46 allocates 20 seconds to each of the two highly soiled areas, totaling 40 seconds, and 15 seconds to each of the three less soiled areas, totaling 45 seconds. By setting the cleaning times in this way, the furnace hood 10 can be efficiently cleaned, and it is possible to prevent some parts of the furnace hood 10 from being insufficiently cleaned.

[0061] The cleaning time calculation unit 46 may calculate the cleaning time by weighting the time according to the position of the furnace hood 10 in the height direction of the coke oven 13. For example, the cleaning time calculation unit 46 may calculate the cleaning time so that the cleaning time becomes longer as the position of the furnace hood 10 in the height direction decreases, as described above.

[0062] Furthermore, the operation control unit 47 may operate the high-pressure water nozzle 21 at a stronger water pressure or the radial cutter 22 at a faster rotation speed for areas that are relatively dirty.

[0063] Figure 6 shows an example of the movement time calculation process in step S05 in Figure 3. As shown in Figure 6, a pair of high-pressure water nozzles 21 and radial cutters 22 are provided, for example, to sandwich the plug 12 from the short side direction of the furnace hood 10. The number of high-pressure water nozzles 21 and radial cutters 22 provided may be changed as appropriate depending on the embodiment.

[0064] The high-pressure water nozzle 21 and the radial cutter 22 spray high-pressure water to remove deposits, for example, between the seal plate 11 of the furnace lid 10 and the plug 12, and rotate the radial cutter 22.

[0065] Each high-pressure water nozzle 21 and radial cutter 22 is provided so as to be movable in a direction along the longitudinal direction of the furnace lid 10. Note that a pair of high-pressure water nozzles 21 and radial cutters 22 do not necessarily have to be moved synchronously. For example, the high-pressure water nozzles 21 and radial cutters 22 may be moved according to the priority of the areas to be cleaned. The priority of the areas to be cleaned can be set, for example, so that areas with a high degree of dirtiness are given a higher priority for cleaning.

[0066] As described above, the coke oven hood cleaning device of the present invention includes a cleaning time calculation unit that calculates a cleaning time according to the degree of contamination of the hood, and an operation control unit that operates the cleaning unit that cleans the hood according to the cleaning time. Therefore, it is possible to clean the coke oven hood in a manner that corresponds to the adhesion state of the deposits. As a result, it is possible to efficiently clean the hood by prioritizing cleaning of areas with a large amount of deposits and giving a lower priority to areas with a small amount of deposits.

[0067] (Variation) In the above embodiment, an example has been described in which a pair of high-pressure water nozzles 21 and a radial cutter 22 are provided as the cleaning unit 20. The high-pressure water nozzles 21 and the radial cutter 22 may be provided as appropriate depending on the position of the furnace lid 10.

[0068] Fig. 7 shows the arrangement of the high-pressure water nozzle 21 and the radial cutter 22 according to a modified example. As shown in Fig. 7, an upper high-pressure water nozzle 21a is provided above the longitudinal direction of the furnace hood 10, i.e., above the height direction. The upper high-pressure water nozzle 21a can move along the lateral direction of the furnace hood 10.

[0069] In addition, a lower high-pressure water nozzle 21b and a radial cutter 22b are provided below the furnace lid 10 in the longitudinal direction, i.e., below the height direction. The lower high-pressure water nozzle 21b and the radial cutter 22b can move along the short side direction of the furnace lid 10.

[0070] The upper part of the furnace lid 10 in the height direction tends to be less dirty. Therefore, by arranging only the upper high-pressure water nozzle 21a, cleaning can be performed efficiently according to the degree of dirt. Furthermore, since there is a gap above the furnace lid 10, even if the gas flow is blocked by deposits, leakage due to poor sealing tends to be less likely. Therefore, the cleaning priority for the upper part of the furnace lid 10 may be set lower than that for the lower part of the furnace lid 10.

[0071] In contrast, the lower part of the furnace hood 10 in the height direction tends to be more dirty. Therefore, by arranging the lower high-pressure water nozzle 21b and the radial cutter 22b, cleaning can be performed efficiently according to the degree of dirt. In addition, the cleaning priority for the lower part of the furnace hood 10 may be set higher or lower than that for the upper part of the furnace hood 10.

[0072] As described above, the coke oven hood cleaning device 100 of the present invention includes a cleaning time calculation unit 46 that calculates the cleaning time according to the degree of contamination of the hood 10, and an operation control unit 47 that operates the cleaning unit 20 that cleans the hood 10 according to the cleaning time. Therefore, it is possible to clean the coke oven hood 10 in a manner that corresponds to the adhesion state of the deposits. As a result, it is possible to efficiently clean the hood 10.

[0073] (Second embodiment) In the above-described embodiment, an example has been described in which the high-pressure water nozzle 21 and radial cutter 22 of the cleaning unit 20 are moved by the moving unit 30. The cleaning unit 20 is not limited to this configuration, and the high-pressure water nozzle and radial cutter may be provided corresponding to the area to be cleaned. Note that the same components as those in the above-described embodiment are given the same reference numerals and descriptions thereof will be omitted.

[0074] Fig. 8 shows the configuration of a coke oven hood cleaning device 200 according to the second embodiment. In the example shown in Fig. 8, there are seven locations on the hood 10 that are to be cleaned. A high-pressure water nozzle 25 is provided at each location on the hood 10 that is to be cleaned, so as to sandwich the plug 12 from the lateral direction of the hood 10. Each high-pressure water nozzle 25 is also provided with a valve 26 that can adjust the amount of water.

[0075] The cleaning time calculation unit 46 calculates, depending on the degree of dirtiness, the cleaning time for each high-pressure water nozzle 25. The operation control unit 47 adjusts the degree of opening and closing of each valve depending on the calculated cleaning time.

[0076] Even with the above-described configuration, it is possible to clean the coke oven hood 10 in a manner that corresponds to the state of adhesion of deposits. As a result, it is possible to efficiently clean the hood 10.

[0077] In particular, the coke oven lid cleaning device 200 according to the second embodiment does not have a moving part, and therefore it is possible to reduce the maintenance costs of the drive parts and connection parts related to the moving part.

[0078] In addition, since the time required for moving the moving part is eliminated, the cleaning time per furnace cover can be shortened, making it possible to clean more furnace covers. [Explanation of symbols]

[0079] 100 Coke oven roof cleaning equipment 200 Coke oven roof cleaning equipment 10 Hearth lid 13 Coke oven 20 Cleaning section 30 Moving Part 41 Image acquisition unit 42 Reference image acquisition unit 43 Dirt level information generation unit 44 Location information acquisition unit 45 Travel time calculation unit 46 Cleaning time calculation unit 47 Operation control section 50 cameras

Claims

1. A coke oven lid cleaning device having a cleaning unit for cleaning a coke oven lid, an image acquisition unit that acquires an image of a portion of the furnace hood of the coke oven that is to be cleaned; a reference image acquisition unit that acquires a reference image that serves as a reference for cleaning the portion of the furnace lid that is to be cleaned; a dirt level information generating unit that generates dirt level information based on the captured image and the reference image; a cleaning time calculation unit that calculates a cleaning time according to the degree of dirt; and an operation control unit that operates the cleaning unit in accordance with the cleaning time.

2. the captured image acquisition unit acquires a plurality of captured images of different areas to be cleaned, the cleaning time calculation unit sets the cleaning time for each captured image in accordance with the degree of dirtiness of the dirt level information; The coke oven lid cleaning device according to claim 1 , wherein the operation control unit operates the cleaning unit for each of the cleaning times.

3. 3. The coke oven lid cleaning device according to claim 2, wherein the cleaning time calculation unit calculates the cleaning time by weighting the cleaning time according to the position of the lid relative to the height direction of the coke oven.

4. a moving unit that moves the cleaning unit to the portion of the furnace lid that is to be cleaned; a position information acquiring unit that acquires the position of the part of the furnace lid to be cleaned and the movement start position of the moving unit; a movement time calculation unit that calculates a movement time based on the position of the part of the furnace lid to be cleaned and the movement start position of the movement unit, 4. The coke oven lid cleaning device according to claim 2, wherein the cleaning time calculation unit calculates each of the cleaning times so that the total time of the moving time and the cleaning time falls within a predetermined specified time.

5. The coke oven lid cleaning device according to claim 2 or 3, wherein the cleaning unit is installed for each of the areas to be cleaned.

6. A coke oven lid cleaning method having a cleaning step of cleaning a coke oven lid, an image acquisition step of acquiring an image of a portion of the furnace roof of the coke oven to be cleaned; a reference image acquisition step of acquiring a reference image that serves as a reference for cleaning the portion of the furnace lid to be cleaned; a dirt level information generating step of generating dirt level information based on the captured image and the reference image; a cleaning time calculation step of calculating a cleaning time according to the degree of contamination; and an operation control step of operating the cleaning unit in accordance with the cleaning time.

7. A computer for controlling the operation of a coke oven roof cleaning device having a cleaning unit for cleaning a coke oven roof, an image acquisition step of acquiring an image of a portion of the furnace roof of the coke oven to be cleaned; a reference image acquisition step of acquiring a reference image that serves as a reference for cleaning the portion of the furnace lid to be cleaned; a dirt level information generating step of generating dirt level information based on the captured image and the reference image; a cleaning time calculation step of calculating a cleaning time according to the degree of contamination; an operation control step of operating the cleaning unit in accordance with the cleaning time;

Images