JP2001355979A - Heat storage type deodorizing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat storage type deodorizing apparatus wherein pressure loss of exhaust gas exhausted through a second flow passage to the outside is suppressed to suppress the rise of internal pressure in the second flow passage and on a plurality of ventilation passages whereby processing gas is prevented from leaking from communication positions between the second flow passage and the vent passages into a heat exchanger chamber without raising power of a sealing fan. SOLUTION: A first flow passage 21 is formed for introducing treatment object gas G into a combustion chamber 1 together with a second flow passage 22 formed for exhausting exhaust g from the combustion chamber 1 to the outside, and a plurality of ventilation passages 2a each filled with a heat storage material 2C are formed in parallel peripherally and heat is stored by passing the exhaust gas g through the second flow passage 22 while heat is stored by passing the object gas G through the first flow passage 21, and further the heat storage structure 2C preheated with the stored heat is constructed rotatably around the axis of a rotary shaft. In the apparatus, a flow passage cross section that forms the second flow passage 22 is formed larger than a flow passage cross section that forms the first flow passage 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for burning, that is, oxidatively decomposing odor components such as an organic solvent and a paint mist in a gas discharged from a painting factory or a printing factory. Specifically, a combustion chamber for burning odor components in the gas to be treated is provided, a first flow path for introducing the gas to be treated into the combustion chamber is formed, and exhaust gas from the combustion chamber is discharged to the outside. And a plurality of ventilation paths filled with the heat storage material are formed side by side in the circumferential direction, and exhaust gas from a combustion chamber among the plurality of ventilation paths is passed through the second flow path. A gas to be processed is a gas to be processed, which has been in an exhaust passage state in which heat is stored by passing through the first passage, and a gas to be processed which preheats the gas to be processed to be passed through the first flow path with the amount of heat stored by the exhaust gas. What was in the passing state Provided a gas passage state become like the vent passage heat storage body about axis are constituted freely rotated along relates regenerative deodorizing apparatus that is constructed of heat exchange unit.

[0002]

2. Description of the Related Art Conventionally, as this type of heat storage type deodorizing apparatus, a cross section of a flow path forming a first flow path for introducing a gas to be treated into a combustion chamber, and a second section for discharging exhaust gas from the combustion chamber to the outside. The cross sections of the two flow paths were formed to have the same size.

[0003]

The gas G to be treated introduced into the combustion chamber 1 through the first flow path is burned in the combustion chamber 1 to burn odor components in the gas G to be treated. 1A
Heat treatment. The volume of the exhaust gas g discharged from the combustion chamber 1 to the outside through the second flow path 22 due to the addition of the exhaust gas from the burner 1A as well as the thermal expansion of the heat-treated processing gas, Although it is larger than the volume of the gas to be treated G introduced into the combustion chamber 1 through the combustion chamber 1, according to the above-described conventional heat storage type deodorizer S, for example, as shown in FIG. 1 has the same size as the flow path cross section forming the first flow path 21 for introducing the gas G to be processed into the first flow path and the flow path cross section forming the second flow path 22 for discharging the exhaust g from the combustion chamber 1 to the outside. The first flow path 21
The exhaust g composed of the processing gas and the burner exhaust gas increased in the combustion chamber 1 in comparison with the volume of the gas G to be introduced into the combustion chamber 1 via 2
When attempting to discharge to the outside through the flow path 22, the resistance due to the pressure loss increases, so that the internal pressure in the second flow path 22 tends to increase. At this time, the exhaust g leaks into the heat exchanger chamber 3 without passing through the plurality of ventilation paths 2a filled with the heat storage material 2C communicating with the second flow path 22 installed in the heat exchanger chamber 3. And the heat storage material 2C may not be able to store heat, so that the pressure in the heat exchanger chamber 3 is increased to prevent the exhaust g from leaking from the communication point R between the second flow path 22 and the ventilation path 2a. Although a gas seal is provided, when the internal pressure rises above the gas seal pressure due to the exhaust g having an increased volume, the exhaust g is transferred to a communication point R between the second flow path 22 and the ventilation path 2a.
Leaks into the heat exchanger room 3 and cannot store heat. For this reason, the power of the seal fan 24 is increased to make the internal pressure in the heat exchanger chamber 3 higher than the internal pressure in the second flow path 22 and the plurality of ventilation paths 2 a, and the exhaust g leaks into the heat exchanger chamber 3. It is necessary to prevent the seal fan 2
In this case, the motive power consumption of Step No. 4 was required, which was uneconomical.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, suppress the pressure loss of exhaust gas discharged to the outside via the second flow path, and reduce the internal pressure in the second flow path and the plurality of ventilation paths. It is an object of the present invention to provide a heat storage type deodorizing device capable of suppressing exhaust gas from leaking into a heat exchanger room from a communication point between a second flow path and a ventilation path without increasing power of a seal fan.

[0005]

[Configuration] As shown in FIG. 8, a combustion chamber 1 for combusting odor components in a gas G to be treated is provided.
A first flow path 21 for introducing the gas G to be treated to the outside and a second flow path 22 for discharging the exhaust g from the combustion chamber 1 to the outside are formed, and the heat storage material 2C is filled. A plurality of ventilation paths 2a are formed side by side in the circumferential direction, and among the plurality of ventilation paths 2a, the exhaust gas g from the combustion chamber 1 is passed through the second flow path 22 to store heat, thereby storing heat. The material that has passed is in a gas passing state to be processed, and the amount of heat stored by the exhaust
The heat storage device is configured so as to be rotatable around an axis P along the ventilation path 2a so that an object in a gas passage state for preheating a gas G to be passed through the air passage is in an exhaust passage state. A heat storage type deodorizing device provided with a body 2 </ b> C and constituting a heat exchange unit 3 </ b> A, wherein a flow path forming the second flow path 22 is smaller than a flow path cross section forming the first flow path 21. It has a large cross section.

As shown in FIG. 3, the first flow path 21 for supplying the gas G to be processed to the combustion chamber 1 is disposed on the upper side in the vertical direction. The second flow path 22 for discharging the exhaust g from the chamber 1
It is located and formed below the vertical direction.

[0007] As described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Operation and Effect] According to the first aspect of the present invention,
Since the cross section of the flow path forming the second flow path is formed larger than the cross section of the flow path forming the first flow path, an increase in the internal pressure in the second flow path and the plurality of ventilation paths is suppressed. can do. In other words, the exhaust gas that is larger than the volume of the gas to be treated introduced into the combustion chamber through the first flow path is formed so that its flow path cross section is larger than the flow path cross section that forms the first flow path. Since the gas is discharged to the outside through the second flow path, the pressure loss is easily suppressed as compared with the case where the first flow path is formed in the same flow path cross section, and the internal pressure in the second flow path and the plurality of ventilation paths is increased. Can be suppressed. As a result, it is possible to prevent exhaust gas from leaking into the heat exchanger room from the communication point between the second flow path and the ventilation path without increasing the power of the seal fan, thereby improving the economic efficiency and reliability during heat storage. You can now let.

According to the second aspect of the present invention, in addition to achieving the effects of the first aspect of the present invention, the first flow path for supplying the gas to be treated to the combustion chamber is provided in the up-down direction. And the second flow path for discharging the exhaust gas from the combustion chamber is formed on the lower side in the vertical direction, so that even if the supply flow rate is reduced, the drift due to the short path is suppressed. Therefore, uneven distribution of heat to the heat storage material can be suppressed. That is, for example, as in the conventional example shown in FIG. 9, the first flow path 21 for supplying the gas to be treated G to the combustion chamber 1 is provided on the lower side in the vertical direction, and the exhaust g from the combustion chamber 1 is provided on the upper side in the vertical direction. Is provided with the second flow passage 22 for discharging the gas to be treated, the gas to be treated burned by the burner 1A in the combustion chamber 1 when the supply amount of the gas to be treated G supplied to the combustion chamber 1 decreases. The G exhaust caused a short path due to the ascending flow of the burner 1A and the second
Since the drifting that flows only to the upper part of the flow path 22 is likely to occur, it easily passes above the heat storage material 2C even in the ventilation path 2a, causing a problem that the heat storage distribution is biased and the heat exchange efficiency is reduced. However, according to the present invention, even if the supply amount of the gas to be processed supplied to the combustion chamber is reduced, the first flow path provided on the upper side in the vertical direction opposes the upward flow of the burner from above. Since the gas is supplied so as to be pushed, turbulence is likely to occur in the gas to be treated. For this reason, it is possible to suppress the occurrence of the drift due to the short path as in the above-described conventional example, and to allow the heat storage material in the ventilation path to pass evenly through the second flow path provided on the lower side in the vertical direction. As a result, it is possible to suppress the occurrence of bias in the heat storage distribution. As a result, even when the supply amount of the gas to be supplied to the combustion chamber is reduced, it is possible to prevent the heat exchange efficiency from decreasing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat storage type deodorizing apparatus S which is an example of an embodiment of the present invention will be described below with reference to the drawings. still,
In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

As shown in FIGS. 1 and 2, the regenerative deodorizing apparatus S includes a combustion chamber 1 for burning odor components in the gas G to be treated, and a first chamber for introducing the gas G to the combustion chamber 1. A heat exchanger chamber 3 including a flow path 21, a second flow path 22 for discharging the exhaust g from the combustion chamber 1 to the outside, and a heat exchange unit 3 </ b> A for preheating the gas G to be treated with the amount of heat stored from the exhaust g. , A push-in fan 23 for supplying the gas G to be treated in the first flow path 21 from the heat exchange section 3A to the combustion chamber 1, and forming the heat exchanger chamber 3 so that gas does not leak from the heat exchange section 3A. A seal fan 24 for gas sealing to increase the pressure in the heat exchanger chamber 3 is provided. In the drawing, reference numeral 25 denotes a direct exhaust duct connected to the first flow path 21 for directly exhausting the gas to be treated G without supplying it to the heat exchanger chamber 3. This is a bypass duct connected to the first flow path 21 for bypassing the inside.

As shown in FIG. 3 and FIG.
Is a gas supply port 6 (hereinafter referred to as a first supply duct) connected to a gas supply duct 5 for supplying a gas G to be processed from one end face side of the heat storage body 2 at a specific location in the circumferential direction. And a discharge duct 7 for discharging the gas G to be treated, which has passed through the heat storage body 2 on the other end face side, to the receiving port 1 a of the combustion chamber 1.
And a gas discharge port 8 (hereinafter referred to as a first discharge duct) connected to the gas discharge port. Further, the second flow path 22 is connected to an exhaust supply duct 9 that supplies the exhaust gas g discharged from the exhaust port 1b of the combustion chamber 1 to the regenerator 2 from the other end face at a specific location in the circumferential direction different from the above. Exhaust supply port 10 (hereinafter referred to as a second supply duct) and an exhaust discharge port 12 (hereinafter referred to as a second supply duct) connected at one end surface thereof to an exhaust duct 11 for exhausting the exhaust g passing through the heat storage body 2 to the outside. Discharge duct). And
As shown in FIG. 3, a first flow path 21 for supplying the gas to be treated G to the combustion chamber 1 is disposed on the upper side in the vertical direction, and a second flow path 22 for discharging the exhaust gas g from the combustion chamber 1 is provided. Since it is disposed on the lower side in the up-down direction, even if the supply amount of the gas to be processed G supplied to the combustion chamber 1 is reduced, the burner 1 </ b> A Since the gas G is supplied so as to be pushed from above against the upward flow, turbulence is likely to occur in the gas G to be treated, and it is possible to suppress the occurrence of a short path and the occurrence of drift. Since the heat storage material 2C in the ventilation path 2a can pass through the flow path 22 evenly, it is possible to suppress the occurrence of bias in the heat storage distribution and prevent the heat exchange efficiency from lowering.

The gas seal is formed by a seal fan 24 which pressurizes the exhaust g in the discharge duct 11 into the heat exchanger chamber 3 through the circulation duct 27 and pressurizes the internal pressure in the first supply duct 6 and the first discharge duct 8. And the second supply duct 10 and the second
The internal pressure in the discharge duct 12 and the plurality of ventilation paths 2 filled with the heat storage material 2C in a state of communicating with the plurality of ducts.
By maintaining the internal pressure in the heat exchanger chamber 3 higher than the internal pressure in a, the gas G to be treated does not leak into the heat exchanger chamber 3 from the first supply duct 6 and the first discharge duct 8. At the same time, the exhaust g is prevented from leaking into the heat exchanger chamber 3 from the second supply duct 10 and the second discharge duct 12. At this time, the pressure in the gas supply duct 5 on the low temperature side is detected by the pressure sensor AS, and the detected pressure is 10 to 50 mmAq lower than the detected pressure by the control device SS.
The seal pressure by the seal fan 24 is automatically controlled so as to increase.

As shown in FIG. 8, the first supply duct 6
And both side walls 6a, 6b, 8 of the first discharge duct 8, respectively.
a, 8b and the end face of the heat storage body 2, the gas in the heat exchanger chamber 3 due to the difference between the pressure in the first supply duct 6 and the first discharge duct 8 and the pressure in the heat exchanger chamber 3. First supply duct 6
And a gap 13 permitting transfer into the first discharge duct 8,
14, both side wall portions 10a, 10b, 12 of the second supply duct 10 and the second discharge duct 12, respectively.
a, 12b and the end face of the heat storage body 2, the pressure in the second supply duct 10 and the second discharge duct 12 and the heat exchanger chamber 3
Gaps 15 and 16 are formed to allow the heat exchanger chamber gas to flow into the second supply duct 10 and the second discharge duct 12 due to the difference with the internal pressure. Incidentally, the gap 1 between the first supply duct 6 and the first discharge duct 8 and the end face of the heat storage body 2
Examples of real numerical values 3 and 14 are 0.1 to 0.5 mm, and real numerical examples of gaps 15 and 16 between the second supply duct 10 and the second discharge duct 12 and the end face of the heat storage body 2 are given. And 0.1 to 0.5 mm.

Each of the side walls 6a, 6b, 8a, 8b of each of the first supply duct 6 and the first discharge duct 8 has a size to cover an end opening of one air passage 2a.
Sealing Cover Plates 17a, 17b, 18a, 18b
Are connected to each other, and both side walls 10a, 10b, 12a, of the second supply duct 10 and the second discharge duct 12 are provided.
12b, sealing cover plates 19a, 19b, 2 each having the size and shape to cover the end opening of one ventilation path 2a.
0a and 20b are continuously provided.

As shown in FIG. 3, the combustion chamber 1 is formed with a receiving port 1a for receiving the gas G to be treated and an exhaust port 1b for discharging the exhaust gas g. A burner 1A is provided for burning, that is, oxidatively decomposing, the odor component in the gas G.

As shown in FIG. 3, the heat exchanger chamber 3 is formed with a second flow path 22 for discharging the exhaust gas g from the combustion chamber 1 to the outside, and is filled with a heat storage material 2C. Are formed in parallel with each other in the circumferential direction, and of the plurality of ventilation paths 2a, the exhaust gas g from the combustion chamber 1 is passed through the second flow path 22 so as to store heat. The object that has passed through the first passage 21 with the amount of heat stored by the exhaust g passes through the first passage 21, and the object that passed through the first passage 21 passes through the gas to be treated. So that the air passage 2a
A heat exchange unit 3A provided with a heat storage body 2C that is configured to be rotatable around an axis P along the axis P.

As shown in FIGS. 4A and 4B, the heat storage body 2 is provided with a cylindrical main body 2A, and a plurality of partition walls that partition the inside of the main body 2A into a plurality of circumferential ventilation paths 2a. 2B, and a structure in which a heat storage material 2C is filled in each ventilation path 2a, that is, a structure in which a plurality of ventilation paths 2a filled with the heat storage material 2C are formed side by side in the circumferential direction. Is installed rotatably around the axis P inside the heat exchanger room 3
It is driven by an external motor 4.

As shown in FIGS. 5 to 7, the heat storage material 2C is provided with plate materials B above and below a fin F formed by bending a metal thin plate such as stainless steel or aluminum at a predetermined height and bending it a plurality of times. In addition, a metal honeycomb formed by laminating yet another fin F is filled in the ventilation path 2a, the metal honeycomb having a larger flow path cross section at a higher temperature side than at a lower temperature side. 2D is a net for preventing the heat storage material 2C from falling off from the ventilation path 2a. As shown in FIG. 6, the ends of both sides of the heat storage material 2C filled in the ventilation path 2a partitioned by the partition wall 2B are formed in a state of being retracted inward from the cylindrical main body 2A. Therefore, the first supply duct 6
Even if most of the opening of the ventilation path 2a is covered by the sealing cover plates 17a and 18a connected to the side wall portions of the respective first discharge ducts, a part of the ventilation path 2a is opened in the duct. Then, the gas to be treated G can be passed through the entire ventilation path 2a. (The same applies to the effects of the second supply duct 10 and the second discharge duct 12.) Incidentally, in this embodiment, the inside of the main body 2A is equally divided into 16 ventilation paths 2a.

Next, a description will be given along the flow of gas in the thermal storage type deodorizer S. As shown in FIG.
Are a plurality of ventilation paths 2 provided in the heat storage body 2 from the first duct 6.
a, the heat storage material 2 in the air passage 2a
C is discharged and supplied into the combustion chamber 1 through the receiving port 1a formed in the first discharge duct 8 while being in contact with C. The burner 1A in the combustion chamber 1 heats and heats the odor component in the gas G to be treated in the combustion chamber 1, and the second supply duct passes through an exhaust port 1b provided in the combustion chamber 1. 10
When passing through the plurality of ventilation passages 2a provided in the heat storage body 2C from the air, the heat is discharged from the second discharge duct 12 to the outside while contacting the heat storage material 2C in the ventilation passage 2a.

At this time, when the exhaust gas g from the combustion chamber 1 is passed through the second flow path 22, heat is stored in the heat storage material 2C in the air passage 2a, while the exhaust gas g is supplied to the combustion chamber 1. When the gas G is passed through the ventilation path 2a through the first flow path, the object that has been in the exhaust gas passage state can be preheated with the amount of heat stored from the exhaust gas g, and is now in the gas passage state. Further, the heat storage body 2 is configured to be rotatable around the rotation axis P so that the material that has been in the gas passing state to be processed is in the exhaust gas passing state.

Further, not only does the heat-treated processing gas thermally expand, but also the exhaust gas of the burner 1A and the gaps 14,1.
5, the volume of the exhaust gas g composed of the processing gas, the exhaust gas from the burner, and the sealing air is larger than the volume of the gas G to be processed supplied into the combustion chamber 1. The cross section of the flow path forming the second flow path 22 (five and a half of the air passages in the present embodiment) is larger than the cross section of the flow path forming the one flow path 21 (four and a half of the ventilation paths in the present embodiment). Since it is formed, the pressure loss of the exhaust g discharged to the outside via the second flow path 22 can be suppressed, and the increase in the internal pressure in the second flow path 22 and the plurality of ventilation paths 2a can be suppressed. Thus, it is possible to prevent the exhaust gas g from leaking into the heat exchanger chamber 3 from the communication point R between the second flow path 22 and the ventilation path 2a without increasing the power of the seal fan 24. Reliability can be improved.

By the way, an example of real numerical values of temperature is as follows.
The temperature of the gas G to be treated in the supply duct 6 is 160 ° C., the temperature of the gas G to be treated in the first discharge duct 8 that receives the gas G to be treated heated by the heat storage unit 2 is 670 ° C., and the temperature of the second gas after combustion is The exhaust temperature in the supply duct 10 is 760 ° C., and the second exhaust duct 1 that receives the exhaust g after heating the heat storage body 2
The temperature of the exhaust g at 2 is 300 ° C. [Another Embodiment] Another embodiment will be described below. <1> The heat storage material is not limited to a structure in which a plurality of metal fins made of stainless steel, aluminum, or the like are arranged in the air passage described in the above embodiment to perform heat exchange. A configuration in which a plurality of pipes made of ceramic or ceramic are filled in a plurality of stages in the axial direction to perform heat exchange may be used. Further, for example, a configuration in which porous ceramics having communication holes are arranged in the ventilation path to perform heat exchange may be used. Further, for example, a configuration in which a plurality of metal or ceramic particles are filled in the air passage and heat exchange is performed by the particles may be employed.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a heat storage type deodorizing apparatus according to an embodiment of the present invention.

FIG. 2 is an overall plan view showing a heat storage type deodorizing apparatus according to one embodiment of the present invention.

FIG. 3 is a schematic vertical sectional side view showing a heat storage type deodorizing apparatus according to an embodiment of the present invention.

FIG. 4 is a longitudinal sectional front view showing a heat storage body according to an embodiment of the present invention.

FIG. 5 is a longitudinal sectional side view showing a main part of a heat storage body according to one embodiment of the present invention.

FIG. 6 is a developed cross-sectional view showing a heat storage body according to one embodiment of the present invention.

FIG. 7 is a partial perspective view showing a heat storage material according to one embodiment of the present invention.

FIG. 8 is a developed sectional view showing a heat storage type deodorizing apparatus according to an embodiment of the present invention.

FIG. 9 is a schematic longitudinal sectional view showing a conventional thermal storage type deodorizing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combustion chamber 1A Burner 2C Heat storage material 3 Heat exchanger room 24 Seal fan 21 First flow path 22 Second flow path G Gas to be treated g Exhaust S Heat storage type deodorizing device R Communication point

Continuation of the front page (72) Inventor Osamu Onishi 1-4-2 Nakamichi, Higashinari-ku, Osaka-shi, Osaka Inside Osaka Gas Engineering Co., Ltd. (72) Inventor Takayoshi Komine 1029-19 Shinbashicho, Izumi-ku, Yokohama-shi, Kanagawa Prefecture No. (72) Inventor Masami Ohara 446-11 Nishikubo, Shimizu-shi, Shizuoka F-term (reference) 3K023 QA12 SA01 SA03 3L103 AA13 BB02 CC27 CC40 DD26 DD68

Claims (2)

[Claims] 1. A combustion chamber for combusting an odor component in a gas to be treated is provided, a first flow path for introducing the gas to be treated into the combustion chamber is formed, and exhaust gas from the combustion chamber is discharged to the outside. A plurality of ventilation paths filled with a heat storage material are formed side by side in the circumferential direction, and exhaust gas from a combustion chamber among the plurality of ventilation paths is passed through the second flow path. The object, which has been in an exhaust passage state in which heat is stored by passing through the gas, becomes a gas-to-be-processed state, and the object gas in which heat is stored by the exhaust gas preheats the gas to be processed, which is passed through the first flow path. A heat storage element that is provided with a heat storage element that is configured to be rotatable around the axis along the ventilation path so that the material that has been in the processing gas passage state is in the exhaust passage state, and that constitutes a heat exchange unit. A deodorizing apparatus, wherein a flow path disconnecting the first flow path is formed. A heat storage type deodorizing device, wherein a cross section of the flow path forming the second flow path is formed larger than a surface. 2. The method according to claim 1, wherein the first flow path for supplying the gas to be processed to the combustion chamber is disposed vertically upward, and the second flow path for discharging exhaust gas from the combustion chamber is disposed vertically downward. The heat storage type deodorizing device according to claim 1, which is disposed and formed on the side.