JP6914168B2 - Heat storage type gas treatment device - Google Patents

Description

The present invention relates to a heat storage type gas treatment apparatus that treats various gases such as coated exhaust gas containing a volatile organic compound (VOC) by combustion for the purpose of deodorizing or purifying.

More specifically, a plurality of heat storage chambers equipped with a breathable heat storage material layer in the room and a combustion chamber equipped in the room with a combustion device for processing are provided, and one end of each of the heat storage chambers is communicated with the combustion chamber to store heat. Some of the heat storage chambers are used as inlet side heat storage chambers, and some other heat storage chambers are used as outlet side heat storage chambers, and untreated gas supplied from the gas supply path is used as a combustion chamber through the inlet side heat storage chamber. In the gas processing operation in which the treated gas is sent from the combustion chamber to the gas delivery path through the heat storage chamber on the outlet side, the other end of each heat storage chamber is communicated with the gas supply path and the gas delivery. A heat storage device provided with a switching valve device that sequentially switches between a heat storage chamber as an inlet side heat storage chamber and a heat storage chamber as an outlet side heat storage chamber among a plurality of heat storage chambers in a form of alternately switching to a state of communicating with a road. Regarding the type gas treatment equipment.

In this type of heat storage type gas treatment device, the high-temperature processed gas after being treated in the combustion chamber is passed through the outlet side heat storage chamber to store heat in the heat storage material layer of the outlet side heat storage chamber, and then the outlet. By switching the side heat storage chamber to the inlet side heat storage chamber by the switching valve device, the untreated gas led to the combustion chamber through the inlet side heat storage chamber is preheated by the previously stored heat storage material layer in the inlet side heat storage chamber. It enables gas processing operation with high thermal efficiency by heat storage and preheating.

By the way, regarding this type of heat storage type gas treatment device, in Patent Document 1 below, a portion between the inlet / outlet regions located above each of the heat storage chambers in the combustion chamber (in other words, a communication passage for communicating the inlet / outlet regions). It has been proposed to install a stirring plate in an inclined posture in a hollow state separated from each of the ceiling portion and the floor portion in the region).

In this proposed device, the gas flow in the processing process from the inlet side heat storage chamber to the outlet side heat storage chamber is made to collide with the stirring plate and agitated in the combustion chamber, so that the temperature becomes high and flows into the outlet side heat storage chamber. It is designed to eliminate the temperature unevenness of the gas.

That is, by eliminating the temperature unevenness of the treated gas flowing into the outlet side heat storage chamber in this way, the heat storage material layer in the outlet side heat storage chamber can be uniformly heated by the heat storage by the treated gas, and the outlet side thereof. When the heat storage material layer in the heat storage chamber becomes the heat storage material layer in the inlet side heat storage chamber next time, the untreated gas passing through the inlet side heat storage chamber can be uniformly preheated, whereby the untreated gas is preheated. The gas treatment efficiency is improved by preventing the gas treatment efficiency from being lowered due to the inflow into the combustion chamber in an uneven state.

Japanese Unexamined Patent Publication No. 2003-240223

However, in this type of heat storage type gas treatment device, the temperature of the gas flow in the combustion chamber becomes considerably high (for example, about 800 ° C.). Therefore, in the above-mentioned proposed device of Patent Document 1, a stirring plate formed of a metal plate or the like is used. However, thermal deformation and thermal deterioration are likely to occur, and therefore there is a problem that it is not practical in terms of durability.

Further, in the above-mentioned proposed device, due to the influence of the draft action of the gas flow due to the temperature rise, the combustion is performed in a form of flowing along the flat ceiling surface in the combustion chamber without being sufficiently affected by the stirring action of the stirring plate. There is a gas flow that passes through the chamber through the chamber, and due to this, there is also a problem that it is difficult to sufficiently eliminate the temperature unevenness of the treated gas flowing into the heat storage chamber on the outlet side.

However, if the distance between the ceiling surface of the combustion chamber and the stirring plate is reduced so that the temperature unevenness of the treated gas can be eliminated as much as possible, the passage resistance of the gas flow increases and the power required for gas transportation greatly increases. Problems arise.

In view of this situation, the main problem of the present invention is to solve the above-mentioned problems by rationalizing the structure of the communication passage region in the combustion chamber.

The first characteristic configuration of the present invention relates to a heat storage type gas treatment apparatus, and the characteristics thereof are as follows.
A plurality of heat storage chambers equipped with a breathable heat storage material layer in the room and a combustion chamber equipped in the room with a combustion device for processing are provided, and one end of each of the heat storage chambers is communicated with the combustion chamber.
A part of the heat storage chambers is used as an inlet side heat storage chamber, and some other heat storage chambers are used as outlet side heat storage chambers, and untreated gas supplied from the gas supply path is used as the inlet side heat storage chamber. In the gas treatment operation in which the treated gas is introduced into the combustion chamber through the combustion chamber and treated by combustion, and the treated gas is sent from the combustion chamber to the gas delivery path through the outlet side heat storage chamber.
A heat storage chamber serving as the inlet side heat storage chamber among the plurality of heat storage chambers in a form in which the other ends of the heat storage chambers are alternately switched between a state in which the other ends are communicated with the gas supply path and a state in which the other ends are communicated with the gas delivery path. A heat storage type gas treatment device provided with a switching valve device that sequentially switches between the outlet side heat storage chamber and the heat storage chamber.
The combustion chamber is divided into an inlet / outlet region in which a communication port opens to one end of each of the heat storage chambers and a communication passage region in which the inlet / outlet regions communicate with each other.
The communication passage region is set so that the length of the communication passage region in the gas passage direction is larger than the length of each of the entrance / exit regions in the gas passage direction of the communication passage region, and the gas passage cross-sectional area is the entrance / exit region. By reducing the cross-sectional area of each gas passage, the average gas air velocity is increased in the throttle air passage region, which is larger than the average gas air velocity in each of the inlet / outlet regions.
Ceiling surface of the communicating passage region extends over the entire length between each other before filling the outlet region respectively the entering outlet region while maintaining a low have a constant height from the ceiling surface of the gas passage direction in the communicating passage area, and, The point is that the ceiling surface is lowered so that there is a step between the entrance and exit areas and the ceiling surface.

That is, in this configuration, basically, as in the proposed device of Patent Document 1 described above, the communication passage region in the combustion chamber is set to the throttle air passage region having a small gas passage cross-sectional area, so that the average gas in the communication passage region is formed. The wind speed is increased to cause turbulence in the gas flow, and the turbulence in the gas flow eliminates the temperature unevenness of the treated gas flowing into the heat storage chamber on the outlet side, thereby improving the gas treatment efficiency.

In this configuration, the ceiling surface of the communication passage region is made larger than the ceiling surface of each of the entrance / exit regions without using the above-mentioned hollow arrangement stirring plate or the like in order to make the communication passage region in the combustion chamber a throttle air passage region. Since the drawing form is lowered, problems such as thermal deformation and thermal deterioration that occur in the stirring plate can be solved, and the device can be made sufficiently practical in terms of durability.

Further, by making the ceiling surface of the communication passage area lower than the ceiling surface of each of the entrance / exit areas in this way so that a step is generated between the ceiling surface of the entrance / exit area and the ceiling surface of the entrance / exit area, a part of the gas flow can be reduced. In the form of flowing along the flat ceiling surface in the combustion chamber, it is possible to prevent it from passing through the continuous passage area without causing turbulence, and as a result, it has been treated to flow into the heat storage chamber on the outlet side. The temperature unevenness of the gas can be more effectively eliminated, and the gas treatment efficiency can be further effectively increased.

Moreover, in the past, it was also practiced to secure the highest possible gas processing efficiency by increasing the amount of energy input to the processing combustion device, but as described above, the gas processing efficiency can be effectively increased. The amount of energy input to the processing combustion device can also be effectively reduced.

Furthermore, since the temperature unevenness of the treated gas can be effectively eliminated as described above, it is not necessary to excessively reduce the cross-sectional area of the communication passage region (that is, the gas passage cross-sectional area), whereby the gas flow passes through. The resistance can also be reduced, and the power required for gas transportation can also be reduced.

The second feature configuration of the present invention specifies an embodiment suitable for carrying out the first feature configuration, and the feature is
Both the entrance / exit area and the communication passage area are formed by an outer wall structure having the same specifications in which a heat insulating material is superposed on the wall material.

That is, conventionally, the combustion chamber is generally formed by an outer wall structure in which a heat insulating material is superposed on the wall material, but according to the above configuration, the outer wall structure in which the heat insulating material is superposed on the wall material is conventionally formed. It is possible to form a communication passage region as a throttle air passage region while only forming the entire combustion chamber.

Therefore, it is possible to facilitate the manufacture of the device as compared with the case where the throttle air passage region is formed by using a dedicated separate member such as the stirring plate described above.

The third feature configuration of the present invention specifies an embodiment suitable for carrying out the first feature configuration, and the feature is
The point is that the processing combustion device is provided in each of the inlet / outlet regions.

According to this configuration, since the processing combustion devices are provided in each of the plurality of inlet / outlet regions, the direction of the gas flow in the communication passage region as each heat storage chamber is switched between the inlet side heat storage chamber and the outlet side heat storage chamber. Regardless of the change, the untreated gas can always be treated in the same treatment mode, and in this respect, more stable gas treatment performance can be obtained.

The fourth feature configuration of the present invention specifies an embodiment suitable for carrying out the first feature configuration, and the feature is
The point is that the processing combustion device is provided only in one of the inlet / outlet regions of the two regions communicating via the communication passage region.

According to this configuration, since the processing combustion device is provided only in one of the inlet / outlet regions of the two regions communicating via the communication passage region, the processing combustion device is provided in each of the plurality of inlet / outlet regions as described above. Compared to deploying a combustion device for treatment, the required gas treatment performance can be obtained, but the manufacturing of the device can be facilitated and the cost of the device can be reduced.

The fifth feature configuration of the present invention specifies an embodiment suitable for carrying out the first feature configuration, and the feature is
The point is that the entrance / exit regions of three or more regions are communicated in series via the communication passage region.

According to this configuration, even if the inlet / outlet regions are three or more regions, the inlet / outlet regions are simply communicated in series via the communication passage region, so that the inlet / outlet regions of the three regions or more are arranged. Both the simplification of the form and the simplification of the gas path formed by the communication passage region can be achieved, and the device structure can be simplified as compared with the case of adopting the parallel communication form.

The sixth feature configuration of the present invention specifies an embodiment suitable for carrying out the fifth feature configuration, and the feature is
The point is that the processing combustion device is provided only in the inlet / outlet region located at the center of the inlet / outlet regions of the three regions communicated in series via the communication passage region.

According to this configuration, since the processing combustion device is deployed in the inlet / outlet region located in the center, the processing combustion device is installed only in the inlet / outlet region located at one end of the inlet / outlet regions of the three regions communicated in series. Compared to deploying, it is possible to reduce the change in processing mode caused by the change in the direction of the gas flow due to the switching between the inlet side heat storage chamber and the outlet side heat storage chamber, and in this respect, more stable gas treatment. Performance can be obtained.

In addition, in carrying out the first feature configuration,
In the inlet / outlet region, the processing combustion device may be provided on both lateral sides of the opening portion of the communication passage region.

According to this configuration, in addition to eliminating the temperature unevenness of the treated gas due to the turbulent flow of the gas flow described above, the outlet side is provided by deploying the treatment combustion device on both lateral sides of the opening portion of the communication passage region. The temperature unevenness of the treated gas flowing into the heat storage chamber can be more effectively eliminated, and the gas treatment efficiency can be further improved accordingly.
Further, by disposing the processing combustion devices on both lateral sides of the opening portion of the communication passage region, it is possible to reduce the size of each processing combustion device.

Further, in carrying out the first feature configuration,
The average gas wind speed in the continuous passage region may be 15 m / sec or less.

That is, if the average gas wind speed in the continuous passage region is set to 15 m / sec or less, the passage resistance of the gas flow can be stopped within the generally allowable range, and thereby the gas transfer power caused by the increase in the gas passage resistance The increase can also be suppressed.
In addition, a heat insulating material is generally attached to the inner surface side of the outer wall of the combustion chamber and the heat storage chamber, but if the average gas wind speed in the continuous passage area is 15 m / sec or less, damage to the heat insulating material in the continuous passage area can be prevented. be able to.

Front view cross-sectional view showing the overall configuration of a two-tower type heat storage type gas treatment device Perspective view of a two-tower type heat storage type gas treatment device A plan sectional view showing an outer wall structure corresponding to the sectional view taken along line III-III in FIG. Diagram illustrating gas processing operation The figure explaining the state which switched the gas path Perspective view of a two-tower type heat storage type gas treatment device showing another embodiment Perspective view of a three-tower type heat storage type gas treatment device showing another embodiment The figure explaining the gas processing operation in the 3 tower type heat storage type gas processing apparatus. The figure explaining the state which switched the gas path by the 3 tower type heat storage type gas processing apparatus. The figure explaining the state which switched the gas path by the 3 tower type heat storage type gas processing apparatus. Open view of a continuous passage area showing another embodiment Top view explaining communication mode between entrance / exit areas showing another embodiment

FIGS. 1 and 2 show a two-tower type heat storage type gas treatment device, in which two heat storage chambers 2 in which a breathable heat storage material layer 1 is provided are provided in each room, and these two heat storage chambers are provided. A combustion chamber 3 extending over the two heat storage chambers 2 is arranged above the two chambers.

As shown in FIG. 3, both the combustion chamber 3 and the heat storage chamber 2 are formed by an outer wall structure in which the heat insulating material 5 is superposed on the wall material 4, and the upper end of each heat storage chamber 2 is the combustion chamber 3. It is opened at the bottom of the combustion chamber 3 and communicated with the combustion chamber 3.

The combustion chamber 3 is equipped with a processing burner 6 as a processing combustion device.

For the two heat storage chambers 2, a gas supply path 7 that guides an untreated gas G such as a coated exhaust gas containing a volatile organic compound to each heat storage chamber 2 and a gas delivery path that guides the treated gas G'. There are 8 facilities.

A gas supply / discharge passage 9 extends from the lower end of each heat storage chamber 2, and each of these gas supply / discharge passages 9 communicates with the gas supply / discharge passage 9 to the gas supply passage 7 and to the gas delivery passage 8. It is connected to the gas supply path 7 and the gas delivery path 8 via a switching three-way valve V as a switching valve device that switches to a state of switching to a state of being operated.

That is, in this heat storage type gas treatment device, as shown in FIG. 4, the inlet side communicating the heat storage chamber 2 of one of the two heat storage chambers 2 with the gas supply path 7 by switching by the switching three-way valve V. In addition to the heat storage chamber 2a, the other heat storage chamber 2 is used as the outlet side heat storage chamber 2b that communicates with the gas delivery path 8, and in this state, the untreated gas G supplied from the gas supply path 7 is passed through the inlet side heat storage chamber 2a. By introducing the gas into the combustion chamber 3, the untreated gas G is treated in the combustion atmosphere formed by the processing burner 6 in the combustion chamber 3.

Further, in parallel with this gas treatment, the treated gas G'delivered from the combustion chamber 3 is sent to the gas delivery path 8 through the outlet side heat storage chamber 2b.

After that, as shown in FIG. 5, by switching by the switching three-way valve V , one heat storage chamber 2 (that is, the heat storage chamber 2 which was the inlet side heat storage chamber 2a earlier) is communicated with the gas delivery path 8 on the outlet side. In addition to switching to the heat storage chamber 2b, the other heat storage chamber 2 (that is, the heat storage chamber 2 that was the outlet side heat storage chamber 2b earlier) is switched to the inlet side heat storage chamber 2a that communicates with the gas supply path 7, and in this switching state, Similarly, the untreated gas G supplied from the gas supply path 7 is introduced into the combustion chamber 3 through the inlet side heat storage chamber 2a and processed in the combustion atmosphere, and the processed gas G'sent from the combustion chamber 3 is discharged from the outlet. It is delivered to the gas delivery path 8 through the side heat storage chamber 2b.

This gas processing operation is carried out in a form in which the switching state shown in FIG. 4 and the switching state shown in FIG. 5 are alternately repeated by switching by the switching three-way valve V, whereby the untreated gas G is burned in the combustion chamber 3. The gas processing operation to be processed by

In this gas processing operation, the high-temperature processed gas G'sent from the combustion chamber 3 is passed through the heat storage material layer 1 of the outlet side heat storage chamber 2b to be processed into the heat storage material layer 1 of the outlet side heat storage chamber 2b. In a state where the retained heat of the finished gas G'is stored and then the outlet side heat storage chamber 2b is switched to the inlet side heat storage chamber 2a, the heat storage material layer 1 of the inlet side heat storage chamber 2a (that is, the high temperature stored earlier). By passing the untreated gas G through the heat storage material layer 1) in the state, the untreated gas G sent to the combustion chamber 3 is preheated.

By these heat storage and preheating, the amount of heat released to the outside together with the processed gas G'is reduced, and the amount of heat generated required for the processing burner 6 is reduced, thereby enabling gas processing operation with high thermal efficiency. ..

The combustion chamber 3 is divided into two inlet / outlet regions 3a in which a communication port opens to the upper end of each heat storage chamber 2 and a communication passage region 3b in which the two inlet / outlet regions 3a communicate with each other. In the type gas treatment apparatus, as shown in FIGS. 1 and 2, the length of the communication passage region 3b in the gas passage direction is larger than the length of each of the inlet / outlet regions 3a in the gas passage direction of the communication passage region 3b. In addition to making the region larger, the gas passage cross-sectional area is smaller than the gas passage cross-sectional area of each of the inlet / outlet regions 3a, so that the average gas air velocity is increased from the average gas air velocity in each of the inlet / outlet regions 3a. ..

By increasing the average gas wind velocity of the gas flow in the communication passage region 3b in this way, it is possible to cause turbulence in the gas flow passing through the communication passage region 3b, and the communication passage region 3b which is the throttle air passage region 3b. by increasing the frequency of contact between the hot air produced by passing gas and the burner 6 in, can facilitate heat exchange between those passing gas and the burner hot air, by these things, the outlet-side regenerator from the combustion chamber 3 The temperature unevenness of the treated gas G'flowing into the 2b is eliminated so that the heat storage material layer 1 in the outlet side heat storage chamber 2b can be uniformly heated by the heat storage by the treated gas G'.

Then, by uniformly heating the heat storage material layer 1 in the outlet side heat storage chamber 2b in this way, when the outlet side heat storage chamber 2b becomes the inlet side heat storage chamber 2a next time, the inlet side heat storage chamber 2a is opened. The passing untreated gas G can be uniformly preheated, thereby preventing a decrease in gas treatment efficiency due to the untreated gas G flowing into the combustion chamber 3 in a state of uneven preheating, and gas treatment. Improve efficiency.

Further, when the communication passage region 3b is set to the throttle air passage region as described above, as shown in FIGS. 1 and 2, the ceiling surface tb of the communication passage region 3b is an inlet / outlet region in the gas passage direction in the communication passage region 3b. 3a is a descending ceiling surface that extends over the entire length between the entrance / exit areas 3a while maintaining a constant height lower than the ceiling surface ta of each, and the ceiling surface tb of the passage area 3b and the ceiling surface of each of the entrance / exit areas 3a. A step tc having a predetermined height dimension d is formed between the ta and the ta.

That is, if the ceiling surface ta of the inlet / outlet region 3a and the ceiling surface tb of the communication passage region 3b are set to the same height, and the entire ceiling surface in the combustion chamber 3 is set to be a flush ceiling surface, the gas flow Due to the influence of the inertial action and wall surface effect of the gas flow, or the draft action of the gas flow due to the temperature rise, a part of the gas flow flows along the ceiling surface of the combustion chamber 3 without causing turbulence. The ceiling passes through the continuous passage region 3b, which reduces the effect of eliminating the temperature unevenness of the treated gas G'flowing from the combustion chamber 3 into the outlet side heat storage chamber 2b.

On the other hand, by making the ceiling surface tb of the communication passage region 3b a descending ceiling surface having a step tc between the ceiling surface tb of the inlet / outlet region 3a and the ceiling surface ta of the inlet / outlet region 3a, a part of the gas flow is made into the combustion chamber 3 as described above. In the form of flowing along the ceiling surface of the above, it is prevented from passing through the communication passage area 3b, and the gas flow is caused by the step ct on each of the inflow side and the outflow side of the gas passing through the communication passage area 3b. Disturbance can be caused, and the gas flow accelerated by passing through the communication passage region 3b collides with the wall of the inlet / outlet region 3a on the outflow side, which also causes turbulence in the gas flow, which causes combustion. The temperature unevenness of the treated gas G'flowing from the chamber 3 into the outlet side heat storage chamber 2b can be more effectively eliminated, so that a higher gas treatment efficiency can be obtained.

The height dimension d of the step tc (that is, the difference in height between the ceiling surface ta of the entrance / exit region 3a and the ceiling surface tb of the communication passage region 3b) is preferably at least 100 mm or more.

In contrast to increasing the average gas flow velocity in the communication passage region 3b as described above, the processing burner 6 is arranged in one of the inlet / outlet regions 3a, whereby the combustion flame of the processing burner 6 causes the gas flow. It is designed to avoid being disturbed by the engine and maintain stable burner operation.

The effect of eliminating the temperature unevenness of the treated gas G increases as the average gas wind speed in the communication passage region 3b increases. It is desirable to keep the average gas wind speed in the passage area 3b below 15 m / sec.
Further, if the average gas wind speed in the continuous passage region 3b is set to 15 m / sec or less, damage to the heat insulating material 5 in the continuous passage region 3b can be prevented.

[Another Embodiment]
The following alternative embodiments of the present invention are listed.

In the above-described embodiment, the processing burner 6 is provided only in one of the inlet / outlet regions 3a, but instead, as shown in FIG. 6, each of the inlet / outlet regions 3a communicated via the communication passage region 3b. A processing combustion device such as a processing burner 6 may be provided in the vehicle.

Further, depending on the case, a processing combustion device such as a processing burner 6 may be provided in the communication passage region 3b.

7 and 8 show a three-tower type heat storage type gas treatment device, which is provided with three heat storage chambers 2, whereas a gas supply path 7 for supplying untreated gas G to each heat storage chamber 2 and each of them. A gas delivery path 8 for guiding the processed gas G'delivered from the heat storage chamber 2 and a purge gas passage 10 for passing a clean purge gas P through each heat storage chamber 2 are provided.
In this example, a part of the treated gas G'treated in the combustion atmosphere in the combustion chamber 3 is used as the purging gas P, but the purging gas P is a part of the treated gas G'. Not limited to this, various clean gases can be used.
Further, the used purging gas P guided by the purging gas passage 10 may be merged with the untreated gas G in the gas supply passage 7 and reprocessed together with the untreated gas G in the combustion chamber 3. ..

The lower end of each heat storage chamber 2 selectively switches between a state in which each heat storage chamber 2 communicates with the gas supply passage 7, a state in which the heat storage chamber 2 communicates with the gas delivery passage 8, and a state in which the heat storage chamber 2 communicates with the purging gas passage 10. It is connected to each of the paths 7, 8 and 10 via an on-off valve V'as a switching valve device.

In this three-tower type heat storage type gas treatment device, as shown in FIG. 8, one of the three heat storage chambers 2 is a heat storage chamber 2a on the inlet side communicating with the gas supply path 7. In addition to making the other one heat storage chamber 2 into an outlet side heat storage chamber 2b that communicates with the gas delivery path 8, the purge heat storage chamber that further communicates the other one heat storage chamber 2 with the purge gas passage 10 The gas treatment operation is carried out in 2c.

Then, as shown in the order of FIGS. 8 to 10, each heat storage chamber 2 is repeatedly switched between the inlet side heat storage chamber 2a, the purge heat storage chamber 2c, and the outlet side heat storage chamber 2b by opening and closing the on-off valve V'. As a result, the heat storage material layer 1 that has passed the untreated gas G as the heat storage material layer 1 of the inlet side heat storage chamber 2a first passes the purge gas P as the heat storage material layer 1 of the purge heat storage chamber 2c. It will be purged.

Further, the heat storage material layer 1 previously purged as the heat storage material layer 1 of the purge heat storage chamber 2c is then subjected to heat storage by passing the treated gas G'as the heat storage material layer 1 of the outlet side heat storage chamber 2b.

Further, the heat storage material layer 1 that has previously stored heat as the heat storage material layer 1 of the outlet side heat storage chamber 2b is then passed through the untreated gas G again as the heat storage material layer 1 of the inlet side heat storage chamber 2a. The processing gas G is preheated.

In the combustion chamber 3, the three inlet / outlet regions 3a in which the upper ends of the heat storage chambers 2 are communicated with each other are communicated in series via the communication passage region 3b, and each communication passage region 3b is the same as that of the above-described embodiment. By reducing the gas passage cross-sectional area, the average gas wind speed is set to a throttle air passage region in which the average gas wind speed is increased from the average gas wind speed in each of the inlet / outlet regions 3a. It is a descending ceiling surface that is lower than ta and has a step tc between the entrance / exit area 3a and each ceiling surface ta.

In the three-tower type heat storage type gas treatment apparatus shown in FIG. 7, among the inlet / outlet regions 3a of the three regions communicated in series, only the inlet / outlet region 3a located at the center is used for processing such as the processing burner 6. A combustion device is provided, and in the inlet / outlet region 3a located at the center, a treatment burner 6 or the like is provided at both ends of the inlet / outlet region 3a in the lateral width direction.

In order to open the communication passage area 3b with respect to the entrance / exit area 3a, the opening may be arranged so as to be biased to the left or right side in the lateral width direction of the entrance / exit area 3a as shown in FIG. 11A. As shown in FIG. 11 (b), the inlet / outlet region 3a is arranged in the left-right center portion in the lateral width direction, or as shown in FIG. 11 (c), the inlet / outlet region 3a is arranged over the entire width in the lateral width direction. Etc., it may be arranged in any way depending on the situation.

Further, in order to open the communication passage region 3b with respect to the entrance / exit region 3a, the opening shape is not limited to a rectangle or a square, but an ellipse as shown in FIG. 11 (d) or an ellipse as shown in FIG. 11 (e). It may have any shape such as a rhombus as shown in.

In the case of a heat storage type gas treatment device including three or more heat storage chambers 2, the inlet / outlet regions 3a of the three regions or more are not limited to being communicated in series via a communication passage region 3b as a throttle air passage region, and FIG. As shown in (a) and (b) of the above, the inlet / outlet regions 3a of three or more regions may be communicated in parallel via the communication passage region 3b as the throttle air passage region.

Further, as shown in FIG. 12 (c), the inlet / outlet regions 3a of three or more regions are circularly communicated with each other via the communication passage region 3b as the throttle air passage region, or the communication passage region as the throttle air passage region. The inlet / outlet regions 3a having three or more regions may be communicated via the 3b in a communication mode in which a series communication and a parallel communication are combined.

In the practice of the present invention, one end of each heat storage chamber 2 communicating with the combustion chamber 3 is not limited to the upper end of each heat storage chamber 2, such as one side lateral end of each heat storage chamber 2 or the lower end of each heat storage chamber 2. Similarly, the other end of each heat storage chamber 2 connected to the switching valve device V is not limited to the lower end of each heat storage chamber 2, and is not limited to the other end of each heat storage chamber 2 or each heat storage chamber. It may be the upper end of 2.

The untreated gas G to be treated is not limited to the painted exhaust gas discharged from the painting booth or the like, but may be a gas that can be treated by the combustion operation of the treatment combustion device such as the treatment burner 6 installed in the combustion chamber 3. For example, any gas may be used.

The heat storage type gas treatment apparatus according to the present invention can be used for purification and the like by deodorizing various gases in various fields.

1 Heat storage material layer 2 Heat storage chamber 6 Burner for treatment (combustion device for treatment)
3 Combustion chamber 2a Inlet side heat storage chamber 2b Outlet side heat storage chamber 7 Gas supply path G Untreated gas G'treated gas 8 Gas delivery path V Three-way valve for switching (switching valve device)
V'on-off valve (switching valve device)
3a In / out area 3b Continuous passage area ta Ceiling surface in the entrance / exit area tb Ceiling surface in the continuous passage area ct Step 4 Wall material 5 Insulation material

Claims (6)

A plurality of heat storage chambers equipped with a breathable heat storage material layer in the room and a combustion chamber equipped with a processing combustion device in the room are provided, and one end of each of the heat storage chambers is communicated with the combustion chamber.
A part of the heat storage chambers is used as an inlet side heat storage chamber, and some other heat storage chambers are used as outlet side heat storage chambers, and untreated gas supplied from the gas supply path is used as the inlet side heat storage chamber. In the gas treatment operation in which the gas is introduced into the combustion chamber through the combustion chamber and treated by combustion, and the treated gas is sent from the combustion chamber to the gas delivery path through the outlet side heat storage chamber.
A heat storage chamber to be the inlet side heat storage chamber among the plurality of heat storage chambers in a form in which the other ends of the heat storage chambers are alternately switched between a state in which the other ends are communicated with the gas supply path and a state in which the other ends are communicated with the gas delivery path. A heat storage type gas treatment device provided with a switching valve device that sequentially switches between the outlet side heat storage chamber and the heat storage chamber.
The combustion chamber is divided into an inlet / outlet region in which a communication port opens to one end of each of the heat storage chambers and a communication passage region in which the inlet / outlet regions communicate with each other.
The communication passage region is set so that the length of the communication passage region in the gas passage direction is larger than the length of each of the entrance / exit regions in the gas passage direction of the communication passage region, and the gas passage cross-sectional area is the entrance / exit region. By reducing the cross-sectional area of each gas passage, the average gas air velocity is increased in the throttle air passage region, which is larger than the average gas air velocity in each of the inlet / outlet regions.
Ceiling surface of the communicating passage region extends over the entire length between each other before filling the outlet region respectively the entering outlet region while maintaining a low have a constant height from the ceiling surface of the gas passage direction in the communicating passage area, and, A heat storage type gas treatment device having a descending ceiling surface having a step between the entrance and exit areas and the ceiling surface. The heat storage type gas treatment apparatus according to claim 1, wherein both the inlet / outlet region and the communication passage region are formed by an outer wall structure having the same specifications in which a heat insulating material is superposed on a wall material. The heat storage type gas treatment device according to claim 1, wherein the treatment combustion device is provided in each of the inlet / outlet regions. The heat storage type gas treatment device according to claim 1, wherein the processing combustion device is provided only in one of the inlet / outlet regions of the two regions communicating via the communication passage region. The heat storage type gas treatment apparatus according to claim 1, wherein the inlet / outlet regions having three or more regions are communicated in series via the communication passage region. The heat storage type gas treatment according to claim 5, wherein the processing combustion device is provided only in the inlet / outlet region located at the center of the inlet / outlet regions of the three regions communicated in series via the communication passage region. Device.

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