JP2010164249A - Furnace structure and anchor tile used as heat storage body for the furnace structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a furnace structure preventing dropping of a heat storage body effectively using exhaust heat from furnace body refractory materials and of reducing facility cost and labor and time for work execution, and also to provide an anchor tile used as the heat storage body for the furnace structure. <P>SOLUTION: The furnace structure includes: the furnace body refractory materials 2, 3 defining a furnace interior space S; a support structure 6 provided outside the furnace body refractory materials 2, 3; and the anchor tiles 11, 12 used as the heat storage bodies and having anchor parts 7, 8 with one ends locked on the support structure 6 and the other ends fixed to the furnace body refractory materials 2, 3 to connect the furnace body refractory materials 2, 3 to the support structure 6 and heat storage parts 9, 10 integrally extended from the anchor parts 7, 8, protruded to the furnace interior space, storing heat and radiating radiant heat to the furnace interior space. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is capable of preventing a heat storage body that contributes to the effective use of exhaust heat from falling from the furnace refractory, and that can also achieve a reduction in equipment cost and labor, and a heat storage body used therefor It relates to a combined anchor tile.

  Conventionally, heat-resistant regenerators installed in the flue gas passages of heating furnaces are heated to high temperatures with circulating flue gas, and radiant heat radiated from the regenerators heated to high temperatures is used to heat the object to be heated. In addition, there is known a technique for saving energy by effectively using exhaust heat so as to adjust the temperature distribution in the furnace (see Patent Documents 1 to 3).

  In addition, an industrial furnace structure is known in which a furnace space is defined by a furnace refractory connected to a support structure such as a support beam via an anchor tile (see Patent Documents 4 to 6).

Japanese Utility Model Publication No. Sho 63-115055 Japanese Utility Model Publication No. 63-19313 No. 02-23996 Japanese Utility Model Publication No. 62-12499 JP 07-324875 A JP 2007-240053 A

  When attaching the heat storage body to the furnace refractory, it is necessary to place the heat storage body on the hearth or to embed the heat storage body into the furnace refractory from its surface and fix it.

  When the heat storage body is placed on the hearth, there is no fear that the heat storage body will fall, but the temperature control of the upper part of the furnace cannot be sufficiently performed only by placing it on the hearth. Further, if dust generated when heat treatment is performed in the furnace falls on the hearth and the surface thereof becomes dirty, the function of the heat storage body is deteriorated, so that the hearth must be cleaned appropriately.

  On the other hand, since the surface of the furnace refractory facing the space in the furnace is exposed to a high temperature for a long time by furnace operation, it is assumed that fixing of the heat storage body is loosened with the deterioration. For a heat storage unit that is fixed by being embedded in the side wall or ceiling of the furnace, if the fixing is loosened, the heat storage unit will fall into the furnace, causing problems such as defective products to be heated or shutdown of the furnace operation. There is a fear.

  The present invention was devised in view of the above-described conventional problems, and can prevent the heat storage body from falling from the furnace refractory that contributes to the effective use of exhaust heat, as well as equipment costs and construction labor. It aims at providing the furnace structure which can also achieve reduction of this, and the anchor tile for thermal storage used for this.

  A furnace structure according to the present invention includes a furnace refractory that defines a space in the furnace, a support structure provided outside the furnace refractory, and the furnace refractory connected to the support structure. For this purpose, the support structure has an anchor portion whose one end is locked and the other end is fixed to the furnace body refractory, and is integrally extended from the anchor portion to protrude into the furnace space to store heat. And an anchor tile serving as a heat storage body having a heat storage section that radiates radiant heat to the furnace space.

  The heat accumulator / anchor tile is made of ceramic.

  In order to adjust the temperature distribution in the furnace, a larger number of the anchor tiles combined with the heat storage body are disposed in the furnace space area that is relatively cooler than the hot furnace space area.

  The anchor tile for a heat storage body according to the present invention has one end locked to the support structure and the other end connected to the furnace refractory in order to connect the furnace refractory defining the furnace space to the support structure. And an anchor part that is integrally extended from the anchor part, protrudes into the furnace space, stores heat and radiates radiant heat to the furnace space, and is integrally formed. .

  In the furnace structure according to the present invention and the heat accumulator / anchor tile used therefor, it is possible to prevent the heat accumulator that contributes to the effective use of exhaust heat from falling from the furnace refractory, and to reduce the equipment cost and construction labor. Can also be achieved.

It is principal part front sectional drawing of the furnace structure concerning this embodiment. It is principal part front sectional drawing of the state which attached the thermal storage body combined anchor tile to the refractory for ceilings of the furnace structure shown in FIG. It is a principal part side sectional drawing of the state which attached the thermal storage body combined anchor tile to the refractory for ceilings of the furnace structure shown in FIG. It is a principal part plane sectional view of the state where the heat accumulator combined anchor tile was attached to the refractory for side walls of the furnace structure shown in FIG. It is a principal part side surface sectional view of the state which attached the thermal storage combined anchor tile to the refractory for side walls of the furnace structure shown in FIG. It is a principal part perspective view which shows the latching operation of the heat storage body combined anchor tile attached to the refractory for side walls shown in FIG. 4 and FIG.

  Hereinafter, a preferred embodiment of a furnace structure according to the present invention and a heat accumulator / anchor tile used for the same will be described in detail with reference to the accompanying drawings. FIG. 1 is a front cross-sectional view of a main part of the furnace structure according to the present embodiment, FIG. 2 is a front cross-sectional view of a main part in a state where a heat storage body combined anchor tile is attached to a refractory for ceiling, and FIG. 4 is a side sectional view of the main part with the body-use anchor tile attached, FIG. 4 is a plan sectional view of the main part with the heat storage body / anchor tile attached to the side wall refractory, and FIG. FIG. 6 is a main part perspective view showing a locking operation of the heat accumulator / anchor tile attached to the side wall refractory. FIG.

  The furnace structure 1 according to the present embodiment basically includes a furnace body refractories 2 and 3 that define a furnace space S, a support structure 6 provided outside the furnace body refractories 2 and 3, and In order to connect the furnace refractories 2 and 3 to the support structure 6, the support structures 6 have anchor portions 7 and 8 that are locked at one end to the support structure 6 and fixed at the other end to the furnace refractories 2 and 3. In addition, the anchor tiles 11 and 12 having heat storage portions 9 and 10 that are integrally extended from the anchor portions 7 and 8 and protrude into the furnace space S and store heat to radiate radiant heat to the furnace space S; It is configured with.

  The heat storage and anchor tiles 11 and 12 are preferably made of ceramic. In addition, it is desirable that a larger number of the heat storage body combined anchor tiles 11 and 12 be disposed in the furnace space region that is relatively cooler than the hot furnace space region in order to adjust the furnace temperature distribution. .

  Further, the anchor tiles 11 and 12 serving as the heat storage body according to the present embodiment have one end on the support structure 6 in order to connect the furnace refractories 2 and 3 defining the furnace space S to the support structure 6. Anchors 7 and 8 which are locked and fixed at the other end of the furnace refractories 2 and 3 are integrally extended from the anchors 7 and 8 and protruded into the furnace space S to store heat and store radiant heat. The heat storage parts 9 and 10 radiating to the inner space S are integrally formed.

  As shown in FIG. 1, the furnace body refractories 2 and 3 are composed of a ceiling refractory 2 as a ceiling, a pair of left and right side refractories 3 as side walls, and a floor refractory (not shown) as a floor. Become. By assembling these refractories 2 and 3 into a quadrilateral front sectional shape, the furnace refractories 2 and 3 are formed in a long rectangular tube shape along the direction of conveyance of the object to be heated. A compartment is formed. The front cross-sectional shape of the furnace body refractories 2 and 3 is not limited to a rectangular shape, and may be a circular shape or a polygonal shape. In general, an indeterminate refractory such as a castable is used for the refractories 2 and 3 for the ceiling and the side walls and the refractory for the floor.

  Although the ceiling refractory 2 is not shown in the figure, it is created by placing the heat storage and anchor tile 11 upright in a container serving as a mold, and then filling the container with solid refractory and solidifying the mold. . Therefore, the anchor tile 11 serving as a heat storage body is fixed to the ceiling refractory 2 when taking a mold.

  At this time, the ceiling refractory 2 is connected to the ceiling refractory 2 through the ceiling refractory 2 in the thickness direction, that is, in the vertical direction, and communicates toward the furnace space S. A plurality of vertical penetrating portions 4 are formed.

  The side wall refractory 3 is also formed in the same manner as the ceiling refractory 2, and the heat accumulator / anchor tile 12 penetrates the side wall refractory 3 in the thickness direction, i.e., laterally, so A plurality of laterally penetrating portions 5 communicated toward S are formed.

  Since a plurality of irregularities are formed in the length direction on the surfaces of the heat storage body / anchor tiles 11 and 12, corresponding irregularities are formed on the inner surfaces of the through portions 4 and 5. The surface of the heat accumulator / anchor tiles 11 and 12 may be male threaded threads. In this case, female threaded threads are formed on the inner surfaces of the through portions 4 and 5. By utilizing a screw form, a female thread may be formed in advance in the furnace refractories 2 and 3, and the male thread of the heat storage body combined anchor tiles 11 and 12 may be screwed into the female thread and fixed.

  A support structure 6 comprising a pair of left and right posts 13 and a beam 14 spanned between the posts 13 is provided outside the furnace refractories 2 and 3. A plurality of support structures 6 are arranged at intervals in the length direction of the rectangular tube furnace refractories 2 and 3. These support structures 6 are configured to have a strength capable of supporting the furnace body refractories 2 and 3 using a steel material or the like. The pair of left and right posts 13 are installed facing the lateral penetrating portion 5. The beam 14 is installed facing the vertically extending through portion 4.

  The heat accumulator / anchor tiles 11 and 12 have a solid shaft shape as a whole, and are formed longer than the thickness of the furnace refractories 2 and 3. These heat accumulator / anchor tiles 11 and 12 are preferably made of a metal having heat resistance and heat storage, such as ceramic.

  As shown in FIG. 2 and FIG. 3, the ceiling heat storage body combined anchor tile 11 fixed to the ceiling refractory 2 is composed of an upper half anchor portion 7 and a lower half heat storage portion 9. The The anchor part 7 and the heat storage part 9 are integrally formed.

  The anchor portion 7 is formed with unevenness and is fixed to the vertical through portion 4 of the ceiling refractory 2. The anchor portion 7 is positioned above the fixing portion 7 a and is exposed above the ceiling refractory 2. Part 7b.

  The latching | locking part 7b is formed in the collar part of the heat storage body combined anchor tile 11 upper end. A pipe material 15 is suspended from the beam 14 of the support structure 6, and a clip 16 is attached to the pipe material 15. The anchor tile 11 serving as a heat storage body is supported by being suspended from the beam 14 by locking the clip 16 to the locking portion 7b.

  Therefore, in the ceiling tile 11 which is also used as the heat storage body for the ceiling, the fixing portion 7 a is fixed to the longitudinal through portion 4 of the ceiling refractory 2, while the locking portion 7 b is connected to the beam 14 via the pipe material 15 and the clip 16. Thus, the ceiling refractory 2 is connected to and supported by the beam 14. The heat storage section 9 that is integrally extended from the anchor section 7 projects from the ceiling refractory 2 to the in-furnace section S. The heat storage unit 9 protruding into the furnace space S is heated and stored in the furnace atmosphere, and the stored heat is radiated to the furnace space S in the form of radiant heat. In the illustrated example, the heat storage section 9 is formed with a solid surface. However, the heat storage area 9 may be increased by forming the heat storage section 9 with the same unevenness as the fixing section 7a.

  As shown in FIGS. 4 and 5, the side wall heat storage element combined anchor tile 12 fixed to the side wall refractory 3 is also composed of one anchor portion 8 in the left-right direction and the other heat storage portion 10. The anchor portion 8 and the heat storage portion 10 are also integrally formed.

  The anchor portion 8 is formed with unevenness and is fixed to the laterally penetrating portion 5 of the side wall refractory 3. The anchor portion 8 is located on the side of the fixing portion 8 a and is exposed to the side of the side wall refractory 3. Part 8b.

  The latching portion 8b is formed with a latch hole at the end portion of the heat accumulator / anchor tile 12. An L-shaped hardware 17 is attached to the post 13 of the support structure 6. As shown in FIG. 6, the heat accumulator / anchor tile 12 is supported by the post 13 by inserting the L-shaped hardware 17 into the latching hole of the latching portion 8 b and latching it.

  Accordingly, in the anchor tile 12 for the heat storage body for side wall, the fixing portion 8 a is fixed to the laterally penetrating portion 5 of the side wall refractory 3, while the locking portion 8 b is supported by the post 13 via the L-shaped metal piece 17. Thus, the side wall refractory 3 is connected to and supported by the post 13. The heat storage part 10 extended integrally from the anchor part 8 is protruded from the side wall refractory 3 to the in-furnace section S, similarly to the ceiling heat storage body / anchor tile 11. The heat storage unit 10 protruding into the furnace space S is heated in the furnace atmosphere to store heat, and radiates the stored heat into the furnace space S in the form of radiant heat. In the illustrated example, the surface of the heat storage unit 10 is also formed with a solid surface, but the heat receiving area may be increased by forming the surface with the same unevenness as the fixing unit 8a.

  Although the heat storage body combined anchor tiles 11 and 12 can be appropriately disposed on the furnace body refractories 2 and 3, since radiant heat is radiated from the heat storage units 9 and 10, in order to save energy by using exhaust heat. In addition, it is preferable to dispose more in a relatively low temperature space in the furnace than in a high temperature space in the furnace.

  Next, the operation of the furnace structure 1 according to the present embodiment and the heat storage body combined anchor tiles 11 and 12 used in the furnace structure 1 will be described. If the heat storage body combined anchor tiles 11 and 12 are made of, for example, ceramic, they are integrally fired from the anchor portions 7 and 8 to the heat storage portions 9 and 10 for production. Even when it is made of metal, it can be produced as an integrated product by cold working or the like. What is necessary is just to form the collar part and latching hole used as the fixing | fixed part 7a, 8a and the latching | locking part 7b, 8b in a production process.

  When the furnace is constructed, the anchor tiles 11 and 12 serving as the heat storage body are fixed when the refractory 2 for the ceiling and the refractory 3 for the side wall are made of the irregular refractory. After constructing the support structure 6, the ceiling heat storage element combined anchor tile 11 is locked to the clip 16, and the side wall heat storage element combined anchor tile 12 is locked to the L-shaped hardware 17. Thereby, the connection of the furnace refractories 2 and 3 to the support structure 6 is completed.

  In the furnace operation, the heat storage parts 9 and 10 of the anchor tiles 11 and 12 serving as the heat storage body are heated in the furnace atmosphere, and the heated heat storage parts 9 and 10 radiate radiant heat to the furnace space S according to the heat storage. .

  In the present embodiment described above, in order to connect the furnace body refractories 2 and 3 to the support structure 6, one end is locked to the support structure 6 and the other end is the furnace body refractories 2 and 3. And the heat storage parts 9 and 10 which are integrally extended from the anchor parts 7 and 8 and protrude into the furnace space S to store heat and radiate radiant heat to the furnace space S. Since the heat storage unit combined with the anchor tiles 11 and 12 and the furnace structure 1 including the same, the heat storage units 9 and 10 and the anchor units 7 and 8 are integrated so that the anchor units 7 and 8 are Even if the surfaces of the furnace refractories 2 and 3 are deteriorated because they are locked to the support structure 6, the heat storage parts 9 and 10 that contribute to effective use of exhaust heat fall off the furnace refractories 2 and 3. It can be reliably prevented from falling into the in-furnace space S.

  Therefore, it is possible to prevent occurrence of troubles such as generation of defective articles to be heated or stop of furnace operation due to the drop of the heat storage and anchor tiles 11 and 12.

  Moreover, since the heat storage parts 9 and 10 and the anchor parts 7 and 8 are integral, compared with the case where these are prepared separately and constructed, the equipment cost and construction effort to the furnace structure 1 can be reduced.

  In addition, since more heat storage / anchor tiles 11 and 12 are disposed in the furnace space area that is relatively cooler than the high-temperature furnace space area, the temperature of the low-temperature furnace space area is increased. On the other hand, the radiant heat of the heat storage units 9 and 10 can be used, and the furnace temperature distribution can be adjusted appropriately.

  The furnace structure according to the present invention and the heat accumulator / anchor tile used therefor can be applied to industrial furnaces in general.

DESCRIPTION OF SYMBOLS 1 Furnace structure 2 Ceiling refractory 3 Side wall refractory 6 Support structure 7,8 Anchor part 9,10 Thermal storage part 11,12 Anchor tile also used as thermal storage body S Furnace space

Claims (4)

  In order to connect the furnace refractory to the furnace refractory for defining the furnace space, the support structure provided outside the furnace refractory, and the furnace refractory to the support structure, One end is locked and the other end is anchored to the furnace refractory. The anchor portion is integrally extended from the anchor portion, protrudes into the furnace space, stores heat, and radiates radiant heat to the furnace space. A furnace structure characterized by comprising a heat storage body combined anchor tile having a heat storage section to perform.   The furnace structure according to claim 1, wherein the heat accumulator / anchor tile is made of ceramic.   The heat storage body combined anchor tile is arranged in a larger amount in the furnace space area relatively cooler than the high temperature furnace space area in order to adjust the furnace temperature distribution. The furnace structure according to 1 or 2.   In order to connect the furnace body refractory that defines the furnace space to the support structure, an anchor portion having one end locked to the support structure and the other end fixed to the furnace body refractory, and the anchor portion A heat storage / anchor tile for use in a furnace structure characterized in that it is integrally formed with a heat storage section that is integrally extended from and protruded into the furnace space and stores heat to radiate radiant heat to the furnace space.

Images