JP5970597B1 - Refractory material cooling structure, incinerator - Google Patents

Abstract

The present invention provides a novel refractory material cooling structure capable of effectively cooling a refractory material disposed on the inner wall of an incinerator by air cooling, and an incinerator comprising the refractory material cooling structure. For the purpose. SOLUTION: A root portion 31 of a caster hook 3 for holding a refractory material 4 is passed through a casing 2 that forms an outline of an incinerator 10 and an air cooling jacket 5 disposed on the outer peripheral surface side of the casing 2. In the state, the base portion 31 of the caster hook 3 is fixed to each of the casing 2 and the air cooling jacket 5. [Selection] Figure 1

Description

  The present invention relates to a refractory material cooling structure for cooling a refractory material of an incinerator, and an incinerator including the refractory material cooling structure.

  When incinerators such as industrial waste and general waste are incinerated, the clinker and molten glass generated by the combustion of high calorific waste are welded to the refractory material that constitutes the inner wall of the furnace and enlarges. Or damage to the refractory material.

  Therefore, means for cooling a refractory material is taken in a general incinerator. For example, in a vertical waste incinerator disclosed in Patent Document 1 below, a water cooling jacket or a collective term called a cooling jacket, An air cooling jacket is attached along the outer peripheral wall of the furnace.

JP 2001-304519 A

  Here, the water cooling jacket is a water cooling type cooling means using a liquid (water) as a cooling medium. On the other hand, the air cooling jacket is an air cooling type cooling means using gas (air) as a cooling medium.

  The water cooling type cooling means has an advantage of high cooling efficiency. However, since it is difficult to adjust the degree of cooling, the refractory material is excessively cooled, and the combustion efficiency of the incinerator may be hindered. In addition, damage due to corrosion may occur due to long-term use, or the cooling effect may be reduced due to accumulation of scale.

  On the other hand, the air cooling type cooling means has an advantage that the structure can be simplified as compared with the water cooling type cooling means. However, the cooling efficiency is not necessarily sufficient.

  The present invention was developed in view of the above technical problems, and a novel refractory cooling structure for cooling a refractory material in an incinerator by air-cooling cooling means, and an incineration provided with the refractory cooling structure. The purpose is to provide a furnace.

  In order to solve the technical problem, the refractory material cooling structure according to the present invention includes a casing that forms an outer shell of an incinerator and a root portion that is fixed to the casing in a state in which a tip portion is directed in the furnace. A caster hook, a refractory material disposed on the inner peripheral surface side of the casing while being held by the caster hook, an air cooling jacket disposed on the outer peripheral surface side of the casing, and a blower. A flow of air formed by the blower is passed through an air passage existing between the inner surface of the air-cooling jacket and the outer peripheral surface of the casing to cool the refractory material, A base portion of the caster hook is fixed to each of the casing and the air cooling jacket in a state of passing through the casing and the air cooling jacket. Characterized by comprising Te (hereinafter, referred to as "the present structure".).

  In the structure of the present invention, a preferred embodiment is one in which a thread is provided on the outer surface of the base portion of the caster hook.

  In the structure of the present invention, it is preferable that the caster hook is fixed to each of the casing and the air cooling jacket by a fastening member having a female screw screwed into the screw thread.

  In the structure of the present invention, an air discharge path for introducing the air flow that has passed through the air passage into the atmospheric discharge or incinerator exhaust gas duct, and air that is circulated by guiding the air flow that has passed through the air passage to the blower. And when the surface temperature of the refractory material exceeds a preset temperature, the air flow formed by the blower is passed through the air passage. Control for circulating air through the air circulation path through the air passage when the surface temperature of the refractory material is equal to or lower than the preset temperature through the air discharge path to the atmosphere or incinerator exhaust gas duct What further comprises an apparatus becomes a preferable aspect.

  The incinerator of the present invention comprises the above-described structure of the present invention (hereinafter referred to as “the present incinerator”).

  According to the present invention, the refractory material can be effectively cooled by the air cooling type cooling means.

FIG. 1 is a cross-sectional view showing an embodiment of the structure of the present invention (the present incinerator). FIG. 2 is an enlarged sectional view showing the structure of the present invention. FIG. 3 is a sectional view showing another embodiment of the structure of the present invention (the present incinerator).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

<Invention structure 1 (invention incinerator 10)>
FIG. 1 shows an embodiment of the structure 1 of the present invention. The structure 1 of the present invention includes a casing 2, caster hooks 3, a refractory material 4, an air cooling jacket 5, and a blower 6. In this embodiment, an incinerator generally referred to as “a vertical waste incinerator” (a combustion system in which waste E is thickly stacked in a vertical furnace and is homogenized and burned while moving the waste in the vertical direction) The present invention structure 1 provided on the lower furnace wall of the incinerator) is described, and this vertical waste incinerator is referred to as the present incinerator 10, but the incinerator type in which the present invention structure 1 is provided. And the part in which this invention structure 1 is provided with respect to an incinerator is not specifically limited.

-Casing 2-
The casing 2 forms an outer shell of the incinerator 10 of the present invention. That is, the casing 2 is a furnace outer wall of the incinerator 10 of the present invention and is formed of a steel material such as a steel plate.

-Caster hook 3-
A plurality of caster hooks 3 are fixed to the casing 2. As shown in FIG. 2, in the present embodiment, the caster hook 3 includes a rod-like root portion 31 and a branched tip portion 32. Further, a screw thread is provided on the outer surface of the root portion 31 of the caster hook 3. The caster hook 3 has a root portion 31 fixed to the casing 2 with the tip portion 32 facing in the furnace.

-Refractory material 4-
The refractory material 4 is disposed on the inner peripheral surface side of the casing 2 while being held by the caster hook 3. That is, the refractory material 4 is a furnace inner wall of the incinerator 10 of the present invention and is formed of an inorganic material such as alumina cement.

-Air cooling jacket 5-
The air cooling jacket 5 is disposed on the outer peripheral surface side of the casing 2. More specifically, the air cooling jacket 5 is disposed so as to cover the outer peripheral surface of the casing 2. At this time, a gap having a constant interval is formed between the inner surface of the air-cooling jacket 5 and the outer peripheral surface of the casing 2, and this gap becomes the air passage S. The air cooling jacket 5 is provided with an air inlet S1 and an air outlet S2.

-Blower 6
The blower 6 is a mechanical element for forming an air flow. In the present embodiment, the blower 6 is configured to blow air into the air passage S through the air inlet S1. The air blown into the air passage S passes through the air passage S and is then discharged from the air discharge port S2.

  That is, the structure 1 of the present invention allows the air flow formed by the blower 6 to pass through the air passage S existing between the inner surface of the air-cooling jacket 5 and the outer peripheral surface of the casing 2 to allow the refractory material 4 to pass. This is an air-cooled cooling structure for cooling.

  And in this invention structure 1, in the state which the base part 31 of the said caster hook 3 penetrated the said casing 2 and the said air cooling jacket 5, it fixes with respect to each of the said casing 2 and the said air cooling jacket 5 (this embodiment). Then, the nut 30 is fastened and fixed).

  As a result, the root portion 31 of the caster hook 3 is exposed in the air passage S. Therefore, in the structure 1 of the present invention, when the blower 6 blows air into the air passage S through the air introduction port S1, the flow of air passing through the air passage S is exposed to the air passage S. It contacts the root portion 31 of the caster hook 3. The air flow that has come into contact with the root portion removes heat from the refractory material 4 from the root portion of the caster hook 3 and is discharged from the air outlet S2.

  Here, a considerable number of the caster hooks 3 are attached to the casing 2 and the tip portion 32 is branched, so that the contact area with the refractory material 4 is large. Therefore, as in the structure 1 of the present invention, when the base portion 31 of the caster hook 3 is exposed to the air passage S and heat is taken from the root portion 31, the refractory material can be effectively used even in an air-cooled type. 4 can be cooled.

  Further, when the base portion 31 of the caster hook 3 is fixed to each of the casing 2 and the air cooling jacket 5 while passing through the casing 2 and the air cooling jacket 5, the air cooling jacket 5 has a considerable rigidity. The advantage that can be imparted also occurs.

  In the present embodiment, a screw thread is provided at the root portion 31 of the caster hook 3, but this screw thread is not an essential component. However, if the root portion 31 of the caster hook 3 is provided with a thread, the surface area of the root portion 31 of the caster hook 3 is increased, and the cooling effect is further improved.

  Further, in the present embodiment, for fixing the caster hook 3 to each of the casing 2 and the air cooling jacket 5, a nut (fastening member having a female screw) 30 is provided on a thread provided at a root portion of the caster hook 3. However, the caster hook 3 may be fixed by means such as welding without using such a fastening member.

  By the way, in this embodiment, when cooling the refractory material 4, the air flow formed by the blower 6 is sequentially blown into the air passage S, and the air passing through the air passage S is discharged from the air discharge port S <b> 2. Although it is set as the mechanism discharged sequentially, you may make it circulate by guiding the flow of the air which passed the said air path S to the said air blower 6 again.

  Further, as shown in FIG. 3, the structure 1 of the present invention is applied to the air discharge path R1 for releasing the air flow passing through the air passage S to the atmosphere and the air flow passing through the air passage S to the blower 6. It is good also as what comprises the air circulation path R2 circulated by guide | inducing.

  In this way, if a mechanism that can take a rapid cooling mode in which the air flow that has passed through the air passage S is released into the atmosphere (or introduced into an incinerator exhaust gas duct not shown) and a slow cooling mode in which it is circulated, the refractory material 4 When the surface temperature exceeds a predetermined set temperature (for example, 700 ° C.), the refractory material 4 can be effectively cooled in the rapid cooling mode. On the other hand, when the surface temperature of the refractory material 4 is below the set temperature, the refractory material 4 can be adjusted so as not to be excessively cooled in the slow cooling mode. In addition, switching of each mode is controlled by operating the valve B by a control device (not shown).

  It should be noted that the present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention is suitably used as an air-cooled cooling structure that effectively cools the refractory material of an incinerator.

1 Structure of the present invention (refractory material cooling structure)
2 Casing 3 Caster hook 31 Root portion 32 Tip portion 4 Refractory material 5 Air cooling jacket 6 Blower 10 The present incinerator (incinerator)
S air passage R1 air discharge passage R2 air circulation passage

Claims (5)

A casing that forms the outer shell of the incinerator;
A caster hook having a root portion fixed to the casing with the tip portion directed in the furnace direction;
In a state of being held by the caster hook, a refractory material disposed on the inner peripheral surface side of the casing,
An air cooling jacket disposed on the outer peripheral surface side of the casing;
A blower,
Comprising
A refractory material cooling structure for cooling the refractory material by passing an air flow formed by the blower through an air passage existing between an inner surface of the air-cooling jacket and an outer peripheral surface of the casing;
The refractory material cooling structure, wherein a root portion of the caster hook is fixed to each of the casing and the air cooling jacket in a state of passing through the casing and the air cooling jacket. In the refractory material cooling structure according to claim 1,
A refractory material cooling structure in which a screw thread is provided on an outer surface of a root portion of the caster hook. In the refractory material cooling structure according to claim 2,
A refractory material cooling structure in which the caster hook is fixed to each of the casing and the air cooling jacket by a fastening member having a female screw screwed into the thread. In the refractory material cooling structure according to any one of claims 1 to 3,
An air discharge path for introducing a flow of air that has passed through the air passage into the atmospheric discharge or incinerator exhaust gas duct;
An air circulation path for circulating the air flow that has passed through the air passage by guiding it to the blower;
Comprising
When the surface temperature of the refractory material exceeds a predetermined set temperature, the air flow formed by the blower is passed through the air passage and then released into the atmosphere through the air discharge path or incinerator A refractory material cooling structure further comprising a control device that is introduced into an exhaust gas duct and circulates air that has passed through the air passage in the air circulation path when the temperature of the refractory material is equal to or lower than the set temperature. .   An incinerator comprising the refractory material cooling structure according to any one of claims 1 to 4.

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