JPH09264521A - Heat storage deodorizing processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly flow non-processed waste gas and processed waste gas in a heat storage zone in the case where there are connected to the heat storage zone three ducts of a non-processed waste gas introduction duct, a processed waste gas exhaust duct, and a purge duct to pump the non-processed waste gas and the processed waste gas. SOLUTION: There are parallelly disposed in a waste gas processing zone (2) a plurality of hear storage zones (3A to 3C) each of which is an introduction flow passage for non-processed waste and is an exhaust flow passage for processed waste gas. A pumping chamber (D) is formed on the opposite side of the waster gas processing zone (2) putting a heat storage later (7) of each heat storage zone (3A to 3C) for pumping the non-pressed waste gas and the processed waste gas, and a pumping flow passage (13) is disposed in the pumping chamber (D) is a peripheral surface of which many vent holesone end and its opposite ends with non-pressed waste gasintroduction ducts (8A to 8C) and with processed waste gas exhaustducts (9A, etc.), and an exhaust blow passage (14) is disposed in the pumping flow passage(13) in which many vent holes (12) are formed and which is connectedwith the purge ducts (10A to 10C).

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a method for directly combusting combustible harmful odor components contained in exhaust gas or oxidizing combustion or thermal decomposition in the presence of a catalyst to perform deodorization treatment. The present invention relates to a thermal storage and deodorization treatment apparatus for recovering and reusing heat.

[0002]

2. Description of the Related Art In various facilities such as a coating booth, a coating drying oven, a printing drying oven, a plastic or plywood manufacturing facility, a food processing facility, an industrial waste treatment facility, a digestive agent manufacturing facility or a fragrance manufacturing facility, Paints, inks, solvents,
Adhesives, synthetic resins, chemicals, and the like generate flammable harmful odor components such as alcohols, esters, phenols and aldehydes having toxic and peculiar odors.

[0003] Since exhaust gas containing such harmful and odorous components cannot be directly discharged into the atmosphere from the viewpoint of pollution prevention, it is usually deodorized and released in a non-toxic and odorless state. ing. As a typical deodorizing treatment method, there is known a direct combustion method in which a harmful odor component in exhaust gas is oxidized and burned or thermally decomposed at a high temperature of 700 to 900 ° C. to change into carbon dioxide and water to deodorize. . This has the advantage that the deodorizing effect is outstanding and is not inferior to any other deodorizing method, and has the advantage that it can be applied to combustible odor components in general. However, there is a disadvantage that the running cost is large and the running cost increases.

[0004] Therefore, heat storage that reduces the running cost by recovering the heat of the deodorized high-temperature treated exhaust gas, storing it, and effectively using it as a heat source for preheating the untreated exhaust gas when introducing it. A type of deodorizing treatment device has been proposed (Japanese Patent Application Laid-Open Nos. 5-332523 and 33-33).
No. 2524). Then, in order to further reduce the running cost, a catalytic heat storage deodorization device has been proposed which oxidizes and burns or thermally decomposes a combustible and harmful malodorous component in exhaust gas at a relatively low temperature in the presence of a catalyst (Japanese Patent Laid-Open No. Hei 5). -66005).

FIG. 5 is a schematic explanatory view showing such a heat storage deodorizing device, in which the untreated exhaust gas is introduced into an exhaust gas treatment zone 30 for heating the exhaust gas to a predetermined temperature for deodorizing treatment. Two heat storage zones 31A and 31B are provided side by side, which serve as a passage and serve as an exhaust gas flow path for discharging the treated exhaust gas deodorized in the exhaust gas treatment zone 30. The exhaust gas treatment zone 30 includes a heating chamber 37 in which a heating device 36 such as a combustion burner is arranged, and catalyst layers 38 and 38 arranged between the heating chamber 37 and the heat storage zones 31A and 31B. A heat storage layer 39 is formed in the zones 31A and 31B so as to be continuous with the catalyst layer 38, and untreated exhaust gas and treated exhaust gas are supplied and discharged on the opposite side of the exhaust gas treatment zone 30 across the heat storage layer 39. A supply / discharge chamber D for performing the above is formed.

In the supply / discharge chamber D, an untreated exhaust gas introduction duct 33 branched from the untreated exhaust gas supply duct 32 is provided.
A, 33B, treated exhaust gas discharge ducts 34A, 34B for discharging treated exhaust gas to the outside, and heat storage zones 31
Untreated exhaust gas remaining in A and 31B is exhaust gas supply duct 3
2 are connected to purge ducts 35A, 35B for returning to the other heat storage zones 31B, 31A for deodorizing treatment, and the ducts 33A, 33B, 34A, 34B, 3 are connected.
5A and 35B include auto dampers 33a, 33b and 34
a, 34b, 35a, 35b are interposed.

The untreated exhaust gas introducing duct 33A,
By alternately opening and closing the automatic dampers 33a and 33b interposed in the 33B, the introduction direction of the untreated exhaust gas and the discharge direction of the treated discharge are reversed every predetermined time (for example, 60 seconds). As a result, one heat storage zone 31A (3
The untreated exhaust gas introduced from the 1B) side flows into the exhaust gas treatment zone 30 and is heated in the heating chamber 37 thereof, and then is deodorized by the catalyst layer 38 on the side facing the other heat storage zone 31B (31A) to obtain a high temperature. The treated exhaust gas from the heat storage zone 31B
When flowing out from (31A), the heat is recovered by the heat storage layer 39. When the introduction direction of the untreated exhaust gas and the discharge direction of the treated exhaust gas are reversed after 60 seconds have passed, the untreated exhaust gas is preheated by the recovered heat of the heat storage layer 39 of the heat storage zone 31B (31A), and the exhaust gas treatment is performed. Since it is introduced into the zone 30, by repeating this, the heat of the treated exhaust gas can be effectively recovered and reused to reduce the running cost. Further, when the introduction / exhaust directions of the untreated exhaust gas and the treated exhaust gas are reversed, the treated exhaust gas flows from the exhaust gas treatment zone 30 into the heat storage zone 31A (31B) where the untreated exhaust gas was introduced until then, and the heat storage Since the untreated exhaust gas remaining in the zone 31A is extruded, the purge duct 35A (35B) is conducted so that it is not discharged to the outside, and is temporarily returned to the heat storage zone 31B (31A) on the introduction side for deodorization treatment. After that, it is designed to be discharged to the outside.

It should be noted that, during use for a long period of time, the harmful odorous component contained in the exhaust gas becomes tar and adheres to the untreated exhaust gas introduction side of the heat storage layer 39.
When removing the tar that has adhered to the heat storage layer 39 on the A (31B) side, the purge duct 35A (35B) and the untreated exhaust gas introduction duct 33B (33A) are electrically connected to each other to store the heat storage zone 3
The air discharged from 1A (31B) is stored in the heat storage zone 31B.
A circulation flow path for refluxing is formed, and flushing for removing tars is performed by continuously circulating heated air for about 1 hour.

[0009]

In this case, heat is efficiently recovered in the heat storage layer 39 when high-temperature treated exhaust gas flows out, and heat is stored in the heat storage layer 39 when untreated exhaust gas is introduced. In order to efficiently preheat the untreated exhaust gas with the generated heat, it is necessary to form a uniform flow of the untreated exhaust gas and the treated exhaust gas. However, three ducts, an untreated exhaust gas introduction duct 33A, 33B, a treated exhaust gas exhaust duct 34A, 34B, and a purge duct 35A, 35B, must be connected to the supply / discharge chamber D of each heat storage zone 31A, 31B. Therefore, there is a problem in that the flow efficiency of exhaust gas is biased depending on the connection position of each duct, and the thermal efficiency is reduced. Further, when the flow of the exhaust gas is biased, the tar locally adheres to the untreated exhaust gas introduction side of the heat storage layer 39, and if left undisturbed, the deodorizing performance is affected, and thus flushing must be performed frequently, Heat storage zone 3 through the purge ducts 35A and 35B
Even if the untreated exhaust gas remaining in 1A and 31B is to be exhausted, there arises a problem that it cannot be exhausted completely in a short time.

In this case, if the supply / discharge chamber D is formed in a sufficiently large static pressure chamber and each duct is connected to this static pressure chamber,
Even if the connecting positions of the ducts are slightly deviated, the flow of the exhaust gas is not biased and a uniform flow can be obtained, but there is a problem that the device becomes large. Therefore, the present invention is to form an untreated exhaust gas and a treated exhaust gas without forming a large static pressure chamber even when three ducts of an untreated exhaust gas introduction duct, a treated exhaust gas discharge duct and a purge duct are connected to each heat storage zone. It is a technical issue to form a uniform flow of heat in the heat storage zone.

[0011]

In order to solve this problem, the present invention provides an untreated exhaust gas introduction passage and a treated exhaust gas in an exhaust gas treatment zone for heating exhaust gas to a predetermined temperature for deodorizing treatment. A plurality of heat storage zones that are discharge channels are arranged in parallel, and each heat storage zone has a heat storage layer that recovers the heat of the treated exhaust gas when the treated exhaust gas is discharged and preheats the untreated exhaust gas when introducing the untreated exhaust gas. A supply / exhaust chamber for supplying / discharging untreated exhaust gas and treated exhaust gas is formed on the opposite side of the exhaust gas treatment zone across the heat storage layer, and the untreated exhaust gas is introduced into the supply / exhaust chamber. In the heat storage deodorization treatment device connected with a duct, a treated exhaust gas discharge duct, and a purge duct for returning untreated exhaust gas remaining in each heat storage zone to another heat storage zone, in the supply / discharge chamber, A supply / exhaust flow path having a large number of ventilation holes is disposed in the exhaust gas, and an untreated exhaust gas introduction duct is connected to one end side of the supply / exhaust flow path, and a treated exhaust gas exhaust duct is provided at the other end side or the one end side. And an exhaust passage having a large number of ventilation holes formed on its peripheral surface is disposed in the supply / exhaust passage, and the exhaust passage is connected to the purge duct.

According to the present invention, a large number of vent holes are formed on the peripheral surface in the supply / discharge chamber for supplying / discharging the untreated exhaust gas and the treated exhaust gas formed on the side opposite to the exhaust gas treatment zone with the heat storage layer interposed therebetween. The formed supply / exhaust flow path is provided, and the untreated exhaust gas introduction duct and the treated exhaust gas exhaust duct are connected to both ends of the supply / exhaust flow path, respectively. Since the exhaust passage having the vent holes is disposed and the purge duct is connected to the exhaust passage, the three ducts can be opened at the same position with respect to the heat storage layer. There is no deviation in the flow due to the difference in the mounting position.

When the untreated exhaust gas is introduced through the untreated exhaust gas introduction duct, the untreated exhaust gas is uniformly blown out into the supply / discharge chamber from the ventilation holes formed in the peripheral surface of the supply / discharge passage. When exhausting the treated exhaust gas through the exhaust gas exhaust duct, the treated exhaust gas in the supply / exhaust chamber that has passed through the heat storage layer is evenly sucked from the vent holes formed around the supply / exhaust passage. When the untreated exhaust gas remaining in the heat storage zone is discharged through the purge duct, the air inside the supply / exhaust flow path is sucked through the ventilation holes formed in the peripheral surface of the exhaust flow path. Air in the heat storage zone is uniformly sucked through the supply / discharge chamber through the ventilation holes formed in the peripheral surface of the. In this way, since a uniform flow is formed in the heat storage zone, thermal efficiency is improved, there is no gas residue when performing purging, and tar is locally attached to the untreated exhaust gas introduction end side of the heat storage layer. Since it does not occur, the frequency of flushing is reduced.

Further, since the exhaust passage connected to the purge duct is disposed inside the supply / exhaust passage connected to the untreated exhaust gas introducing duct and the treated exhaust gas exhaust duct, it can be installed in a small space. Moreover, when a small amount of gas in the supply / exhaust chamber is exhausted through the purge duct, the gas passes through the vent holes formed in both the supply / exhaust flow path and the exhaust flow path, so that only a small amount is exhausted. Even in this case, the gas flows uniformly in the chamber.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing a heat storage deodorization treatment apparatus according to the present invention, FIG. 2 is a flow sheet thereof, and FIGS. 3 (a) to 3 (c) are explanatory views showing the introduction / discharge directions of exhaust gas in the deodorization treatment apparatus. 4 (a) to 4 (c) are explanatory views showing the flow of exhaust gas in the supply / discharge chamber.

In the figure, reference numeral 1 denotes a heat storage for recovering and reusing the heat of the treated exhaust gas at high temperature while decomposing the combustible and harmful malodorous components contained in the exhaust gas by oxidative combustion or thermal decomposition in the presence of a catalyst. Exhaust gas treatment zone 2 which is a deodorization treatment device and which deodorizes by heating exhaust gas to a predetermined temperature
The three heat storage zones 3A, 3B, and 3C, which serve as an untreated exhaust gas introduction flow path and a treated exhaust gas discharge flow path, are arranged in parallel.

The exhaust gas treatment zone 2 is arranged between the heating chamber 5 in which the heating device 4 such as a combustion burner is arranged, and the heating chamber 5 and the heat storage zones 3A to 3C and faces the heating chamber 5. The heat storage zone 3A to 3C is composed of the catalyst layer 6, and the heat of the treated exhaust gas is recovered when the treated exhaust gas is discharged.
Heat storage layer 7 for preheating untreated exhaust gas when introducing untreated exhaust gas
And a supply / discharge chamber D for introducing untreated exhaust gas and discharging treated exhaust gas is formed on the opposite side of the exhaust gas treatment zone 2 with the heat storage layer 7 interposed therebetween.

Further, in each of the supply / discharge chambers D, untreated exhaust gas introduction ducts 8A to 8C for introducing the untreated exhaust gas into the exhaust gas treatment zone 2 through the respective heat storage layers 7, and the exhaust pipe 2 for discharging the treated exhaust gas 2 Treated exhaust gas discharge ducts 9A to 9 for discharging the treated exhaust gas that has been deodorized by the heat storage layer 7
C and the untreated exhaust gas remaining in each of the heat storage zones 3A to 3C through the other heat storage zones 3A to 3C.
Is connected to purge ducts 10A to 10C for deodorizing and introducing the ducts 8A to 8C, 9A to 9C, 10
Auto dampers 8a to 8c and 9a to 9 are included in A to 10C.
c, 10a to 10c are interposed.

In the supply / discharge chamber D, a large-diameter supply / discharge flow path 13 having a large number of ventilation holes 11 and 12 formed on its peripheral surface.
And a rectifying member 15 having a double-pipe structure composed of a small-diameter exhaust flow path 14 is disposed in the center of the lower end of the supply / discharge chamber D in a state where its axial direction is substantially parallel to the end surface of the heat storage layer 7. The untreated exhaust gas introduction ducts 8A to 8C are connected to one end side of the supply / exhaust flow path 13 having a diameter through the supply / exhaust chamber D, and the treated exhaust gas exhaust ducts 9A to 9C are connected to the other end side.
Is connected to the small-diameter exhaust passage 14, and purge ducts 10A to 10C having a relatively small air volume are connected to the exhaust passage 14.

The untreated exhaust gas introducing ducts 8A-
8C is formed by branching from an exhaust gas supply duct 8 that supplies exhaust gas from an exhaust gas generation source, and a ventilation fan 16 is provided in the exhaust gas supply duct 8 so that the purge ducts 10A to 10C are provided with the ventilation air. It is connected to the suction port side of the fan 16.

The above is an example of the configuration of the present invention, and its operation will now be described. First, untreated exhaust gas introduction duct 8A, treated exhaust gas discharge duct 9B, purge duct 1
When 0C is conducted, untreated exhaust gas is introduced into the exhaust gas treatment zone 2 through the heat storage zone 3A and is deodorized in the exhaust gas treatment zone 2 as shown in FIG. 3B, and at this time, the high-temperature treated exhaust gas deodorized in the exhaust gas treatment zone 2 passes through the heat storage layer 7 of the heat storage zone 3B,
The heat is recovered. Moreover, a part of the high-temperature treated exhaust gas deodorized in the exhaust gas treatment zone 2 is stored in the heat storage zone 3C.
Flow into the heat storage zone 3C, the untreated exhaust gas remaining in the heat storage zone 3C is squeezed out and returned to the exhaust gas treatment zone 2 through the heat storage zone 3A to be deodorized.

Next, after a lapse of a predetermined time (for example, 60 seconds), the ducts 8A, 9B, 10 which have been conducted until then are connected.
By shutting off C, this time, the untreated exhaust gas introduction duct 8B,
When the treated exhaust gas discharge duct 9C and the purge duct 10A are electrically connected, as shown in FIG. 3 (b), most of the untreated exhaust gas is introduced into the exhaust gas treatment zone 2 through the heat storage zone 3B and deodorized, and then most of it is removed. As it is discharged through the heat storage zone 3C and a part of it flows into the heat storage zone 3A, the untreated exhaust gas remaining in the heat storage zone 3A is squeezed out and returned to the exhaust gas treatment zone 2 through the heat storage zone 3B. It At this time, since the untreated exhaust gas is introduced through the heat storage zone 3B in which the heat of the treated exhaust gas has been recovered, the untreated exhaust gas is preheated by the recovered heat of the heat storage layer 7 of the heat storage zone 3B, and the exhaust gas heating zone Introduced in 2. Further, since the untreated exhaust gas remaining in the heat storage zone 3A is returned to the heat storage zone 3B and purged, the untreated exhaust gas is not discharged to the outside.

Further, after a predetermined time (for example, 60 seconds) has elapsed, the ducts 8B, 9C, 10 which have been conducted until then are connected.
By shutting off A, this time the untreated exhaust gas introduction duct 8C,
When the treated exhaust gas discharge duct 9A and the purge duct 10B are brought into conduction, as shown in FIG. 3 (c), after the untreated exhaust gas is introduced into the exhaust gas treatment zone 2 through the heat storage zone 3C and deodorized, most of it is removed. The heat is discharged through the heat storage zone 3A, and a part of the heat is discharged from the heat storage zone 3B to the exhaust gas processing zone 2 through the heat storage zone 3C. Also in this case, similarly to the above, the untreated exhaust gas is preheated by the recovered heat of the heat storage layer 7 of the heat storage zone 3C and introduced into the exhaust gas heating zone 2, and the untreated exhaust gas remaining in the heat storage zone 3B is returned to the heat storage zone 3C. And purged.

When introducing the untreated exhaust gas into the heat storage zones 3A to 3C, as shown in FIG. 4 (a), the untreated exhaust gas fed through the untreated exhaust gas introduction ducts 8A to 8C is Since the air is blown out evenly from the ventilation holes 11 formed on the peripheral surface of the supply / discharge channel 13 constituting the rectifying member 15, the uniform flow toward the end surface of the heat storage layer 7 in the supply / discharge chamber D. Is formed. Therefore, the untreated exhaust gas uniformly flows in the heat storage layer 7 and is introduced into the exhaust gas treatment zone 2, and is efficiently preheated by the heat stored in the heat storage layer 7. Further, since the untreated exhaust gas is not locally blown to the end surface of the heat storage layer 7, the tar is prevented from locally adhering, and the flushing interval can be lengthened.

On the other hand, when the treated exhaust gas is discharged from the heat storage zones 3A to 3C, the treated exhaust gas that has passed through the heat storage layer 7 is exhausted from the exhaust gas discharge ducts 9A to 9C as shown in FIG. 4B.
The air is uniformly sucked from the ventilation holes 11 formed in the peripheral surface of the supply / discharge channel 13 connected to 9C, so that a uniform flow from the end surface of the heat storage layer 7 to the supply / discharge channel 13 is formed. Therefore, the high-temperature treated exhaust gas flowing out from the exhaust gas treatment zone 2 uniformly flows in the heat storage layer 7 located upstream thereof, and the heat is efficiently recovered in the heat storage layer 7.

Further, when the untreated exhaust gas remaining in the heat storage zones 3A to 3C is discharged, as shown in FIG. 4 (c),
Since the purge ducts 10A to 10C are connected to the small-diameter exhaust passage 14, the untreated exhaust gas remaining in the heat storage zones 3A to 3C passes through the supply / exhaust chamber D and flows into the supply / exhaust passage 13 forming the rectifying member 15. The exhaust gas is sucked into the supply / exhaust flow passage 13 through the ventilation hole 11 opened in the peripheral surface, and further, the exhaust gas is exhausted through the ventilation hole 12 opened in the peripheral surface of the exhaust flow passage 14 which constitutes the rectifying member 15. Since it is sucked into the flow passage 14, a uniform flow from the heat storage layer 7 to the peripheral surface of the exhaust flow passage 14 is formed. As described above, since the exhaust passage 14 is disposed in the supply / exhaust passage 13, not only can it be installed in a narrow space, but also the purge ducts 10A to 1A.
When the untreated exhaust gas in the supply / exhaust chamber D is discharged through 0C, the gas passes through the ventilation holes 11 and 12 formed in both the supply / exhaust flow path 13 and the exhaust flow path 14, so that a slight amount Even if the gas is only discharged, the gas uniformly flows in the chamber D. Therefore, the untreated exhaust gas remaining in the heat storage zones 3A to 3C can be surely discharged, and the purge can be performed in a short time without generating the gas residue.

Thus, the untreated exhaust gas introducing duct 8A
8C, the treated exhaust gas introducing ducts 9A to 9C, and the purging ducts 10A to 10C are connected to one rectifying member 15 arranged in the supply / exhaust chamber D, so that the exhaust gas is introduced through any duct / Even if it flows out, the flow of the exhaust gas in the heat storage layer 7 becomes uniform, and it is not necessary to provide a large static pressure chamber, so that the device can be downsized.

In the above description, the heat storage deodorization treatment apparatus 1 has three towers of the heat storage zones 3A to 3C, but the present invention is not limited to this, and the two towers type, or the exhaust gas treatment zone above and below. The present invention can also be applied to a one-column type in which a heat storage zone is formed. Further, as the heat storage deodorization treatment device 1, the one in which the catalyst layer 6 is disposed in the exhaust gas treatment zone 2 and the deodorization treatment is performed by the catalytic oxidation method has been described, but the present invention is not limited to this, and a catalyst is not used. The deodorizing process may be performed by a direct combustion method in which a combustible and harmful malodorous component contained in the treated exhaust gas is directly combusted. Further, the heating device 4 arranged in the exhaust gas treatment zone 2 is not limited to the combustion burner, and any heating means such as an electric heater or a ceramic heater can be adopted.

Furthermore, a case has been described in which a tube body having a semicircular cross section is used as the supply / discharge channel 13, and a tube body having a circular section is used as the exhaust channel 14, but these shapes are arbitrary. It may have a polygonal cross section or other arbitrary cross section. Further, as long as the exhaust flow passage is formed in the supply / exhaust flow passage, the double pipe structure is not necessarily required, and the structure is arbitrary. For example, a vent hole is provided in the supply / exhaust flow passage. It may be a case where the partition wall is provided to form the exhaust passage.

[0030]

As described above, according to the present invention, in the supply / discharge chamber formed on the opposite side of the exhaust gas treatment zone with the heat storage layer sandwiched therebetween, the supply / discharge flow path having a large number of ventilation holes on the peripheral surface is formed. And an untreated exhaust gas introduction duct and a treated exhaust gas exhaust duct are connected to one or both ends of the supply / exhaust passage, and a large number of vent holes are formed on the peripheral surface in the supply / exhaust passage. Since the exhaust duct is provided and the purge duct is connected to the exhaust duct, the three ducts can be connected to a narrow space so as to open at the same position with respect to the heat storage layer. Not only does the flow become unbalanced due to the difference in the mounting position, but also the exhaust gas flow is made uniform by the numerous vent holes formed in the peripheral surfaces of the supply / exhaust flow path and the exhaust flow path, and untreated Exhaust gas and treated exhaust gas flow uniformly in the heat storage layer Therefore, the tar does not locally adhere to the untreated exhaust gas introduction end side of the heat storage layer, the thermal efficiency is improved, and even when the untreated exhaust gas is discharged through the purge duct, the gas is supplied to the supply / discharge channel. Since it passes through the ventilation holes formed in both the exhaust flow path and the exhaust flow path, even if only a small amount of gas is discharged, the gas flows evenly in the supply / discharge chamber, and the untreated exhaust gas remaining in the heat storage zone is left for a short time. It has a very excellent effect that it can be surely discharged.

[Brief description of drawings]

FIG. 1 is a perspective view showing a heat storage deodorization processing apparatus according to the present invention.

FIG. 2 is its flow sheet.

3A to 3C are explanatory views showing the introduction / exhaust directions of the exhaust gas in the deodorizing apparatus.

4A to 4C are explanatory views showing the flow of exhaust gas in the supply / discharge chamber.

FIG. 5 is a flow sheet showing a conventional device.

[Explanation of symbols]

 Heat storage deodorization treatment device 2 ... Exhaust gas treatment zone 3A to 3C Heat storage zone D ... Supply / exhaust chamber 7 ... Heat storage layer 8A-8C ... Untreated exhaust gas introduction duct 9A-9C ... Treated exhaust gas discharge duct 10A-10C ... Purge duct 11, 12 ... Vent hole 13 ... Supply / exhaust flow Channel 14 ... Exhaust channel 15 ... Flow control member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuhiko Takaji Kazuhiko Takaji 1-9 Kakimoto-cho, Toyota-shi, Aichi Trinity Industry Co., Ltd. (72) Kenji Sumida 7800 Chihama, Daito-cho, Ogasa-gun, Shizuoka Address Inside Cataler Industry Co., Ltd.

Claims (1)

[Claims] 1. A heat storage zone (3A-, which serves as an introduction flow path for untreated exhaust gas and an exhaust flow path for treated exhaust gas, is provided in an exhaust gas treatment zone (2) for deodorizing by heating exhaust gas to a predetermined temperature.
3C) are arranged side by side, and in each heat storage zone (3A to 3C), a heat storage layer that recovers the heat of the treated exhaust gas when the treated exhaust gas is discharged and preheats the untreated exhaust gas when introducing the untreated exhaust gas ( 7) is provided and the exhaust gas treatment zone (2) is sandwiched by the heat storage layer (7).
A supply / exhaust chamber (D) for supplying and exhausting the untreated exhaust gas and the treated exhaust gas is formed on the side opposite to the exhaust gas introduction duct (8A to 8C) Exhaust gas exhaust duct (9A-9C),
Purge duct (10A to 10A) that recirculates the untreated exhaust gas remaining in each heat storage zone (3A to 3C) to other heat storage zones (3A to 3C)
In the heat storage deodorization treatment apparatus to which C) is connected, a supply / discharge channel (13) having a large number of ventilation holes (11) formed in the peripheral surface is arranged in the supply / discharge chamber (D). An untreated exhaust gas introduction duct (8A to 8) is provided on one end side of the exhaust flow path (13).
C) is connected, and the treated exhaust gas discharge ducts (9A to 9C) are connected to the other end side or the one end side, and a large number of ventilation holes ( The exhaust flow path (14) which forms 12) is arranged, and the exhaust flow path (14)
Is a heat storage deodorization treatment device, characterized in that it is connected to the purge duct (10A to 10C).