JP2009073865A - Heat insulating box for hot repair work of coke oven - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating box for hot repair work, the box which can be suspended by a crane or the like and conveyed in a stable state to a carbonization chamber. <P>SOLUTION: A box-type heat insulating box to be placed in a carbonization chamber of a coke oven and capable of housing a repair worker comprises: a heat insulating panel 5 with a heat insulator filling inside for constituting at least a box side wall 11; a plurality of vertical aqueducts extended in a vertical direction, constituting a main frame from the upper end to the lower end of the box side wall 11; horizontal aqueducts connecting the upper end and the lower end of the vertical aqueducts 41; and a fixing section 47 provided at the upper end of one of the vertical aqueduct 41 for fixing a rope to hoist the heat insulating box. The vertical aqueducts 41 and horizontal aqueducts 42 are configured to allow cooling water to flow inside to reciprocally detour in the vertical direction along the vertical aqueducts 41. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat insulation box for hot repair work of a coke oven suitable for protecting workers from high temperatures when performing hot repair of a carbonization chamber of a coke oven for producing coke used for iron making or the like. is there.

  In the coke oven, the carbonization chamber into which coal is charged is constructed of bricks and is constantly maintained at a high temperature. The space of the carbonization chamber has a width of about 500 mm, a height of about 5 to 7 m, and a depth of about 15 to 18 m.

  When the coking chamber in such a coke oven is operated for a long period of time, it undergoes a temperature change caused by charging coal at room temperature or a temperature change caused by opening the furnace lid when the produced coke is discharged. As a result, the bricks in the carbonization chamber are damaged due to damage such as spalling, and the bricks are cracked and peeled from the rough skin, and the bricks themselves are collapsed, which hinders the operation of the coke oven. Will come.

  For this reason, when the big crack etc. generate | occur | produce in the brick which comprises the carbonization chamber, or brick itself collapses, it will be necessary to repair this. A common method for repairing this brick is to reload a new brick. There is currently no method for repairing bricks other than relying on human hands. For this reason, when repairing bricks in the carbonization chamber, the temperature of the furnace body is lowered to a certain extent, and then a heat insulation box for hot repair work is inserted into the carbonization chamber.

As a conventional heat insulation box for hot repair work, for example, as shown in Patent Document 1, in order to protect workers from the residual heat of the carbonization chamber, cold air is supplied into the work space from a cold air supply duct formed in the lower part of the floor. There has been proposed a form that can supply the power.
JP-A-5-239463

  By the way, the heat-insulating box for hot repair shown in Patent Document 1 must form a cold air supply duct under the floor to the extent that a certain amount of underfloor height is required. For this reason, there is a problem that it becomes difficult to replace bricks on the furnace wall under the box floor and to remove brick scraps near the hearth surface.

  In the technology disclosed in Patent Document 1, cold air flows from an opening under the floor to an exhaust duct on the ceiling. For this reason, ventilation inside the box cannot be sufficiently achieved, and there is a possibility that problems such as temperature rise inside the box and accumulation of gas affecting the human body may occur.

  Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to effectively reduce the temperature inside the box and exhaust the gas so that the working environment in the box is improved. It is to provide a heat insulation box for hot repair work of coke ovens with excellent maintenance and safety.

  A heat insulation box for hot repair work of a coke oven to which the present invention is applied is a box-type heat insulation box which is inserted into a carbonization chamber of a coke furnace and can accommodate a repair worker in order to solve the above-described problems. A work window formed in the lower part of the side wall of the box surrounding the work space, a vent formed in the ceiling of the work space, a ceiling back space formed in the ceiling back of the work space, and the ceiling back space. And a suction fan for sucking the gas in the ceiling space through the connected suction duct.

  In the present invention having the above-described configuration, hot air from the carbonization chamber enters through the window when the window is opened and the brick is repaired. This hot air rises and is sucked into the space behind the ceiling through a vent hole formed in the ceiling. At this time, by operating the suction fan, the hot air in the ceiling space is sucked from the suction duct 19.

  In particular, in the present invention, it is possible to repair and replace the floor from the lower window, and to control the temperature inside the box and prevent gas accumulation by adjusting the openings of the plurality of vents provided in the ceiling, and the air volume It is a simple and structurally strong box for the reason that it can be suppressed.

  Hereinafter, as a best mode for carrying out the present invention, a heat insulation box for hot repair work of a coke oven suitable for protecting workers from high temperatures will be described in detail with reference to the drawings.

  As shown in FIG. 1, the heat insulation box 1 for hot repair work to which the present invention is applied is configured in a box shape that can be inserted into the space of the carbonization chamber, and includes a box side wall 11, a ceiling 12, a bottom surface 13 A space 2 whose periphery is covered by is formed. An operator enters the space 2 and opens a window 3 formed in the lower portion of the box side wall to perform a brick repair work. In addition, the heat-insulating box 1 for hot repair work includes a vent hole 18 formed in the ceiling 12 in the space 2 and a ceiling space 16 formed on the back of the ceiling with respect to the space 2.

  The window 3 can be opened and closed, and a shutter mechanism or the like (not shown) may be provided. Further, the vent hole 18 is not limited to the case where it is always open, and a shutter opening / closing mechanism and a sliding opening / closing mechanism (not shown) may be provided and configured to be freely opened and closed.

  The box side wall 11 is constituted by a heat insulating panel in order to secure the working environment in the space 2 by protecting the worker inside from the residual heat of the carbonization chamber. In fact, the box side wall 11 is filled with a high-performance heat insulating material for providing heat insulation.

  FIG. 2 shows a cross-sectional view as seen from the side of the heat-insulating box 1 for hot repair work to which the present invention is applied. The ceiling space 16 is further connected to a suction duct 19. The suction duct 19 is further connected to a suction fan 20, and by operating the suction fan 20, air in the ceiling space 16 is scavenged through the suction duct.

  In the present invention having such a configuration, hot air from the carbonization chamber enters through the window 3 when the brick 3 is repaired by opening the window 3. The hot air rises and is sucked into the ceiling back space 16 through the air holes 18 formed in the ceiling 12 as indicated by arrows shown in FIG. At this time, by operating the suction fan 20, hot air in the ceiling space 16 is sucked from the suction duct 19. In the present invention, cold air may be supplied from the entrance of the box 11 into the space 2. At this time, the cool air may be supplied near the height of the window 3. As a result, the sent cool air flows in the vicinity of the window 3 from the bottom to the top so that the worker is not exposed to the hot air.

  In particular, in the present invention, it is possible to repair and replace the floor from the lower window, and to control the temperature inside the box and prevent gas accumulation by adjusting the openings of the plurality of vents provided in the ceiling, and the air volume It is a simple and structurally strong box for the reason that it can be suppressed.

  Moreover, in this invention, it is desirable to comprise the depth of the heat insulation box 1 for hot repair construction with 3.6 m or less. As the reason, as shown in FIG. 2, when the depth A of the heat insulation box 1 for hot repair work is 3.6 m or less, various handling operations such as carrying-in and mounting can be easily performed. It is.

  By the way, even if the depth A of the heat insulation box 1 for hot repair work is 3.6 m or less, the brick repair points in the carbonization chamber are concentrated near the entrance and there is almost no need to repair the bricks in the back. Therefore, no particular problems arise.

It is a perspective view of the heat insulation box for hot repair works to which the present invention is applied. It is sectional drawing seen from the side of the heat insulation box for hot repair construction to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat insulation box 2 for hot repair work 3 Space 3 Window 5 Heat insulation panel 11 Box side wall 12 Ceiling 18 Ventilation hole 19 Suction duct 20 Suction fan

Claims (3)

In a box-type heat insulation box that is charged in the coking chamber of the coke oven and can accommodate repair workers,
A work window formed at the bottom of the side wall of the box surrounding the work space;
A vent formed in the ceiling of the work space;
A ceiling space formed in the ceiling of the work space;
A heat insulation box for hot repair work of a coke oven, comprising: a suction fan for sucking gas in the ceiling space through a suction duct connected to the ceiling space. The heat insulation box for hot repair work of a coke oven according to claim 1, wherein the depth is 3.6 m or less. The heat insulation box for hot repair work of a coke oven according to claim 1 or 2, wherein the vent hole is configured to be openable and closable.