JP2019172734A - Furnace cover cleaning device and method for cleaning furnace cover - Google Patents

Abstract

To provide a furnace cover cleaning device and a method for cleaning the furnace cover using the same, where the furnace cover cleaning device has a simplified configuration, allows for sufficient cleaning, and reduces possibility of damaging a refractory.SOLUTION: A furnace cover cleaning device 1 comprises a cleaning part 2 that cleans at least the side of the furnace cover L, where the cleaning part 2 has a combination of a scraper 21 and a water injection gun 22 as a set, the scraper is provided above and removes deposits attached to the furnace cover L by physical contact with the furnace cover L, the water injection gun removes an adhering matter attached to the furnace cover L from supplied high-pressure water by the water pressure, and the scraper 21 and the water spray gun 22 are configured to move within a predetermined range.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a furnace lid cleaning device for cleaning a furnace lid of a coke oven, and a furnace lid cleaning method using the same.

  2. Description of the Related Art Conventionally, there is a furnace cover cleaning device for cleaning a refractory constituting a furnace cover of a coke oven, a gas passage provided around the refractory, and a knife edge. For example, an apparatus described in Patent Document 1. Using this equipment, gas passages, knife edges, and refractories (specifically, refractory bricks) in the furnace lid with deposits such as tar and carbon generated during the dry distillation of coal in the furnace Clean the surface.

Japanese Patent No. 4783559 Japanese Patent No. 5775858

  In the apparatus described in Patent Document 1, a “side cleaner” for cleaning the side portion of the furnace lid, a “lower surface cleaner” for cleaning the lower portion of the furnace lid, and an “upper surface cleaner” for cleaning the upper portion of the furnace lid are separately provided. It was. However, there is a problem in that the structure of the furnace cover cleaning device becomes complicated if it is configured such that individual cleaners are provided to clean the side part, the upper part, and the lower part.

  On the other hand, Patent Document 2 describes that the “jet nozzle means”, which is one cleaning unit, cleans the side part, the lower part, and the upper part of a member made of a refractory. However, if high-pressure water is applied to the surface of the refractory, the refractory may be scraped off and should be avoided if possible. Therefore, it is necessary to consider this point in dealing with the problem.

  In view of the above-described problems, the present invention has a simplified structure, can be sufficiently cleaned, and further suppresses the possibility of damaging the refractory, and cleaning the furnace cover using the same. It is an object to provide a method.

  The present invention is a furnace cover cleaning device for cleaning a furnace lid of a coke oven, the furnace cover cleaning device includes a lift that can be raised and lowered, a lifting device that applies a vertical driving force to the lift, A cleaning unit that is provided on the lifting platform and that cleans at least a side portion of the furnace lid; and a drive device that applies a lateral driving force to the cleaning unit, the cleaning unit being provided above A scraper that removes the deposits attached to the furnace lid by physical contact with the furnace lid, and is provided below, and the supplied high-pressure water adheres to the furnace lid by its water pressure. A furnace lid cleaning device comprising a combination of a water spray gun that removes adhered deposits as a set, wherein the scraper and the water spray gun are configured to move within a predetermined range by the drive device. is there.

  According to this configuration, the scraper can be applied to a particularly dirty lower portion of the portion formed of the refractory material in the furnace lid by the cleaning unit in which the scraper is positioned above and the water spray gun is positioned below. In addition, since the scraper and the water spray gun are configured to move within a predetermined range by the driving device, the scraper and the water spray gun can be moved to perform sufficient cleaning.

  In addition, the drive device is provided on the lifting platform, and the scraper and the water spray gun are configured to rotate around a rotation axis by the drive device, and the cleaning unit includes the scraper and The pair of water spray guns may be configured to have a pair on one side and the other side.

  According to this structure, the structure for movement can be simplified by making the movement of a scraper and a water-injection gun into a rotational motion centering on a rotating shaft. In addition, by configuring the scraper and the water spray gun as a pair on one side and the other side, the furnace lid can be cleaned from one side and the other side, and efficient cleaning is possible.

  Further, the driving device can drive each set of the scraper and the water spray gun constituting the pair of the one side and the other side independently on the one side and the other side.

  According to this configuration, since each pair of the scraper and the water spray gun constituting the pair can be driven independently on one side and the other side, efficient cleaning is achieved by optimal driving on one side and the other side. Is possible.

  Moreover, the control part which controls the said raising / lowering apparatus and the said drive device can also be provided.

  According to this configuration, the controller can appropriately operate the lifting device and the driving device.

  Moreover, this invention is a cleaning method of the furnace cover of a coke oven using the said furnace cover cleaning apparatus, Comprising: The lower part of the said furnace cover is cleaned by using the said scraper in the said cleaning part. .

  According to this method, even if the scraper is located above and the water spray gun is located below, the lower part of the furnace lid can be cleaned by using it also as the side part. In addition, it is also possible to clean the upper part of a furnace lid with this cleaning part.

  According to the present invention, it is easy to apply the scraper to the lower part that is particularly easily contaminated among the parts formed of the refractory in the furnace lid. Moreover, even if deposits removed from the furnace lid by the scraper adhere to the water spray gun, the water spray gun is unlikely to fail. For this reason, a structure is simplified and it can fully clean, and also can suppress the possibility of damaging a refractory.

It is a side view showing the outline of the furnace cover cleaning device concerning one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line aa in FIG. 1 showing a relationship between the cleaning unit and the furnace lid of the furnace lid cleaning device (a state in which the scraper is separated from the side surface of the heat insulating unit). It is a bb arrow directional cross-sectional view in FIG. 1 which shows the relationship (state which the scraper contact | abutted the side surface of the heat insulation part) of the cleaning part and furnace cover of the said furnace cover cleaning apparatus. It is a top view which shows the relationship (state at the time of cleaning the upper surface of a heat insulation part) with the cleaning part of the said furnace cover cleaning apparatus, and a furnace cover. An example of the structure of the water injection gun of the said furnace cover cleaning apparatus is shown, (a) is cc end elevation (only a center part is shown) of (b), (b) is a longitudinal cross-sectional view.

  Hereinafter, the furnace cover cleaning device 1 according to one aspect of the present invention will be described. As shown in FIG. 1, the furnace cover cleaning device 1 of the present embodiment includes a cleaning unit 2 that cleans at least a side part of the furnace cover L. In FIG. 1, the cleaning unit 2 is illustrated at three locations, upper, middle, and lower, but this is in three states (the upper position in the furnace lid L, the intermediate position) while the cleaning unit 2 is moving. A certain state, a state in a lower position) is shown in one figure at the same time, and the furnace cover cleaning device 1 of this embodiment includes only one cleaning unit 2.

  The cleaning unit 2 includes a combination of the scraper 21 and the water spray gun 22 as a set. The scraper 21 and the water spray gun 22 are attached to a lifting platform 23 that can move up and down along the longitudinal direction of the furnace lid L. The furnace cover cleaning device 1 includes a rail portion 24 extending in the vertical direction and a lifting device 25 that applies a driving force to the lifting platform 23, and the lifting platform 23 moves up and down along the rail portion 24. One cleaning unit 2 includes two scrapers 21 and two water spray guns 22. That is, this one cleaning unit 2 is configured to have a pair of the scraper 21 and the water spray gun 22 on a pair of one side and the other side (left and right sides in FIGS. 2 to 4). As shown in FIG. 2 or FIG. 3, a portion in which a combination of one scraper 21 and one water spray gun 22 is formed of a refractory material (refractory brick) in the furnace lid L during cleaning. Are arranged on one side face B1 and the other side face B2 in the width direction of the heat insulating part B.

  The scraper 21 removes deposits attached to the furnace lid L by physical contact with the furnace lid L. The scraper 21 mainly attaches to the surfaces B1 to B4 of the heat insulating part B in the furnace lid L. Shave off the kimono.

  The scraper 21 has a substantially cylindrical shape, and has a spiral protrusion (shown schematically by hatching in the drawing) on the side surface. As the scraper 21 rotates in the axial direction, the protrusions that move while rotating with respect to the furnace lid L scrape off the deposits. In addition, the shape of the scraper 21 is not limited to a substantially cylindrical shape, and can be implemented by changing to various shapes.

  In the present embodiment, the water injection gun 22 is configured such that the supplied high-pressure water can be converted into a rotating flow by the water pressure and injected. However, it is not limited to this configuration. The basic configuration of the water injection gun 22 is the same as that described in Japanese Patent Application Laid-Open No. 2014-234466 by the applicant. Specifically, as shown in FIG. 5B, a cylindrical rotor 222 is rotatably provided in the casing 221. The lower end of the rotor 222 is supported by the retainer 223 in contact therewith. In the space 224 formed in the casing, as shown in FIG. 5 (a), for example, outward from a discharge portion 225 arranged in a parallel relationship as shown in the figure at a position shifted in the radial direction. The high-pressure water F is discharged, and the rotor 222 is rotationally moved in the direction R along the casing inner surface 2211 at the upper end portion by being pushed by the rotating water flow generated thereby. Since the direction of the rotor 222 is changed every moment by this rotational motion, the water flow discharged from the lower end portion of the cylindrical rotor 222 becomes a rotational flow according to the rotational motion of the upper end portion. This rotating flow is ejected to the outside from an ejection port 226 opened at the lower end of the casing.

  The water injection gun 22 removes deposits adhering to the furnace lid L by the water pressure of the high-pressure water ejected from the injection port 226. The water injection gun 22 mainly includes the gas path L1 and the knife edge in the furnace lid L. The adhering matter adhering to L2 can be blown off with water pressure.

  In the present embodiment, the water pressure of the high-pressure water supplied to and ejected from the water injection gun 22 is set to 30 MPa or more and 50 MPa or less. And the rotation speed of the rotational flow formed with the water injection gun 22 is set to 1000 rpm. The distance from the injection port of the water injection gun 22 to the furnace lid L is set to 100 mm or more and 150 mm or less. With such a setting, the locus of high-pressure water injected from the water injection gun 22 becomes denser and cleaning can be sufficiently performed, for example, as compared with a structure rotated by a hydraulic drive device.

  In the cleaning unit 2, the scraper 21 is provided above, and the water spray gun 22 is provided below. The scraper 21 and the water spray gun 22 are configured to rotate around the rotary shaft 26 within a predetermined range (predetermined angle) when viewed from above or below the lifting platform 23. Specifically, the rotary motion is provided with a rotary shaft 26 having an axis extending vertically on the base end side of each scraper 21, and the scraper 21 and the water jet are connected to a movable member 27 connected to the rotary shaft 26. Since the gun 22 is fixed, the movable member 27 moves (specifically, rotates) within a predetermined range in response to the driving force of the driving device 28 that applies a lateral driving force. And this rotational motion is a motion which approaches and leaves | separates with respect to the side surfaces B1 and B2 of the heat insulation part B in the furnace lid L, as shown in FIG. In this way, the scraper 21 and the water spray gun 22 are rotated, so that the cleaning can be sufficiently performed. Moreover, the structure for a movement can be simplified by making the movement of the scraper 21 and the water injection gun 22 into a rotational movement around the rotation shaft 26.

  As described above, one cleaning unit 2 is configured to have a pair of the scraper 21 and the water spray gun 22 on one side and the other side. For this reason, as shown in FIG. 4, the rotational movement is first performed so that one side (the pair shown on the left side of FIG. 4 in the pair) is directed toward the center side in the left-right direction of the heat insulating portion B. Then, it can return to the original position, and then the other side (the pair shown on the right side of FIG. 4 in the pair) can move toward the center side of the heat insulating portion B. The operation is for preventing the contact between the one side and the other side set (the set of the scraper 21 and the water spray gun 22), and at the same time the set on the one side of the cleaning unit 2 returns to the original position. The side set may be operated. Moreover, it can be the exercise | movement which operates one side and the other side simultaneously. After each group on one side and the other side is operated simultaneously and moved toward the center side of the heat insulating part B, when moving to the vicinity of the center of the heat insulating part B, one side is moved in a direction to return to the original position. The other side is moved as it is and moved in the direction of returning to the original position at the moving end. By appropriately performing this rotational movement, in addition to the side surfaces B1 and B2 of the furnace lid L, the lower surface B4 can also be cleaned. In addition, it is also possible to clean upper surface B3 with the said one cleaning part 2. FIG. With this configuration, the furnace lid L can be cleaned from one side and the other side, so that efficient cleaning is possible. Further, since each pair of the scraper 21 and the water spray gun 22 constituting a pair can be driven independently on one side and the other side, more efficient cleaning can be achieved by optimal driving on one side and the other side. Is possible.

  Paying attention to the scraper 21, as shown in FIG. 3, the scraper 21 is brought into contact with the side surfaces B1 and B2 of the heat insulating part B when cleaning is performed, and as shown in FIG. The scraper 21 can be separated from the side surfaces B1 and B2 of the heat insulating part B. At these times, the high pressure water does not necessarily have to be jetted from the water jet gun 22.

  The scraper 21 is also used for cleaning the lower surface B4 of the heat insulating portion B (FIG. 4 shows the relationship with the upper surface B3, but the relationship with the lower surface B4 is also the same). By the rotational motion, the entire area of the lower surface B4 can be covered while the scraper 21 is brought into contact with the lower surface B4 of the heat insulating portion B when cleaning is performed.

  On the other hand, when cleaning the upper surface B3 of the heat insulating part B, the scraper 21 is not used and the water spray gun 22 is used. As shown in FIG. 4, the entire area of the upper surface B <b> 3 can be covered by applying the high-pressure water from the water spray gun 22 to the upper surface B <b> 3 of the heat insulating portion B during the cleaning operation by the rotational movement.

  Regarding the lifting range when the cleaning unit 2 moves up and down by the lifting mechanism, the upper end is a position where the water spray gun 22 exists so that high pressure water can be sprayed onto the knife edge L2 in the upper part of the furnace lid L, specifically Is a position above the upper surface B3 (cleaning part 2 shown in the upper part of FIG. 1). Moreover, a lower end is a position which can contact | connect the scraper 21 with respect to the lower surface B4 in the heat insulation part B of the furnace lid L (cleaning part 2 shown by the lower part of FIG. 1).

  Although not shown and described in detail as another configuration of the furnace cover cleaning device 1, a high pressure water supply source (water storage tank, pump, piping) and each part (particularly, the lifting device 25 and the driving device 28) are provided. A control unit for controlling is provided.

  In the cleaning unit 2 of the present embodiment configured as described above, the scraper 21 is positioned above and the water injection gun 22 is positioned below. Due to this positional relationship, the scraper 21 can be applied to the lower part (lower surface B4) that is particularly dirty due to the adhering matter hanging downward in the heat insulating part B formed of refractory in the furnace lid L. In addition, in the present embodiment, since the water injection gun 22 is configured to be converted into a rotating flow by the water pressure of the high-pressure water supplied, a mechanism (for example, a hydraulic drive device) for forming the rotating flow is used as the water injection gun. There is no need to install outside of 22. For this reason, the structure of the cleaning part 2 can be simplified. Further, since there is no mechanism that is likely to fail outside, even if the deposit removed from the furnace lid L by the scraper 21 adheres to the water spray gun 22, it is advantageous in that the water spray gun 22 is unlikely to fail. .

  Next, a method for cleaning the furnace lid L of the coke oven using the furnace lid cleaning apparatus 1 will be briefly described. First, the furnace cover cleaning device 1 is arranged so as to face the heat insulation part B of the furnace cover L removed from the coke oven. In this state, the cleaning unit 2 is moved up and down by the lifting device 25 for cleaning (the up-and-down movement is in one direction (one-way direction) and does not need to be reciprocated). At that time, a rotary motion in which the movable member 27 rotates within a predetermined range is used as appropriate. Thus, since the furnace cover L can be cleaned by the single cleaning unit 2, the furnace cover cleaning device 1 of the present embodiment can perform efficient cleaning while having a simplified configuration.

  In the cleaning, the upper part of the furnace lid L is cleaned by using the water spray gun 22 alone in the cleaning unit 2. Even in the cleaning unit 2 in which the scraper 21 is positioned upward and the water spray gun 22 is positioned downward as in this embodiment, the lower part of the furnace lid L is also used for cleaning the side portion. It is advantageous in that it can be cleaned. In addition, it is also possible to clean an upper part with a side part and a lower part.

  The hearth cleaning device 1 according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

  For example, in the said embodiment, it was comprised so that all the four sides of the side part (one side, the other side), the lower part, and the upper part of the furnace lid L could be cleaned with the one cleaning part 2. FIG. However, the present invention is not limited to this. For example, the side part (one side, the other side) and the lower part are cleaned by one cleaning part 2, and the upper part is cleaned by the other cleaning part 2. Good. The cleaning device in this case is provided with two cleaning parts 2, but even in that case, separate cleaning parts 2 are provided for each of the side part (one side, the other side), the lower part, and the upper part. Compared to the configuration described above, the side portion and the lower portion can be cleaned together by the single cleaning unit 2, which is advantageous in that the configuration of the furnace cover cleaning device 1 as a whole can be simplified.

  Further, the water injection gun 22 constituting the embodiment is configured to be able to convert the supplied high-pressure water into a rotating flow by the water pressure and inject it. However, the configuration of the water injection gun is not limited to this, and for example, the entire water injection gun can be moved by hydraulic drive so that the supplied high-pressure water is turned into a rotating flow or the like.

  Moreover, in the said embodiment, with respect to the upper part of the furnace lid L, it cleaned by using the water injection gun 22 independently. However, the present invention is not limited to this. For example, a scraper dedicated to the upper part may be provided on the movable member 27, and the scraper dedicated to the upper part may be used together with the water spray gun 22 for cleaning.

DESCRIPTION OF SYMBOLS 1 Furnace cleaning apparatus 2 Cleaning part 21 Scraper 22 Water injection gun 23 Lifting stand 25 Lifting apparatus 26 Rotating shaft 28 Drive apparatus L Furnace cover L1 Gas path L2 Knife edge B Heat insulation part

Claims (5)

A furnace cover cleaning device for cleaning the furnace cover of a coke oven,
The furnace cover cleaning device is:
A lifting platform that can be moved up and down;
An elevating device that applies a vertical driving force to the elevating platform;
A cleaning part provided on the lifting platform, for cleaning at least a side part of the furnace lid;
A driving device for applying a lateral driving force to the cleaning unit,
The cleaning unit is
A scraper that is provided above and removes deposits attached to the furnace lid by physical contact with the furnace lid;
A water injection gun that is provided below and removes the attached high-pressure water adhering to the furnace lid by the water pressure;
A combination of
The scraper cleaning device, wherein the scraper and the water spray gun are configured to move within a predetermined range by the driving device. The driving device is provided on the lifting platform;
The scraper and the water spray gun are configured to rotate around a rotation axis by the driving device,
The furnace cover cleaning apparatus according to claim 1, wherein the cleaning unit is configured to have the pair of the scraper and the water spray gun on one side and the other side.   The furnace cover cleaning device according to claim 2, wherein the driving device drives each pair of the scraper and the water spray gun constituting the pair of the one side and the other side independently on the one side and the other side. .   The furnace cover cleaning apparatus in any one of Claims 1-3 provided with the control part which controls the said raising / lowering apparatus and the said drive device. A method for cleaning a furnace cover of a coke oven using the furnace cover cleaning device according to any one of claims 1 to 4,
A method for cleaning a furnace lid, wherein a lower part of the furnace lid is cleaned by using the scraper in the cleaning unit.