JP3606789B2 - Thermal storage deodorizer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is an apparatus for burning, that is, oxidizing and decomposing odor components such as organic solvents and paint mist in a gas discharged from, for example, a painting factory or a printing factory. And a second flow path for discharging the exhaust gas from the combustion chamber to the outside while forming a first flow path for introducing the gas to be treated into the combustion chamber. And a plurality of air passages filled with a heat storage material are juxtaposed in the circumferential direction, and heat is stored by passing the exhaust from the combustion chamber through the second flow passage among the plurality of air passages. An object that has been in the exhaust passage state is in a state in which the gas to be processed is passed, and an object that has been in the state of gas to be processed that preheats the gas to be processed that is passed through the first flow path with the amount of heat stored by the exhaust gas. To be in the exhaust passage state Provided regenerator to the axis around along the serial air passage are constituted freely rotated relates regenerative deodorizing apparatus that is constructed of heat exchange unit.
[0002]
[Prior art]
Conventionally, as this type of heat storage type deodorization apparatus, a cross section of a first flow path for introducing a gas to be treated into a combustion chamber and a second flow path for discharging the exhaust from the combustion chamber to the outside are formed. The cross-sections of the channels to be formed were the same size.
[0003]
[Problems to be solved by the invention]
The gas to be processed G introduced into the combustion chamber 1 through the first flow path is heat-treated by the burner 1A in the combustion chamber 1 in order to burn the odor components in the gas to be processed G. Since the heat-treated process gas is not only thermally expanded, but also the exhaust gas of the burner 1A is added, the volume of the exhaust g discharged from the combustion chamber 1 through the second flow path 22 is the same as that of the first flow path 21. The volume of the gas G to be treated introduced into the combustion chamber 1 through the combustion chamber 1 is increased, but according to the above-described conventional heat storage deodorizer S, for example, as shown in FIG. 1 is the same size as the cross section of the flow path that forms the first flow path 21 that introduces the gas G to be treated 1 and the cross section of the flow path that forms the second flow path 22 that discharges the exhaust g from the combustion chamber 1 to the outside. Therefore, the exhaust gas composed of the processing gas and the exhaust gas of the burner increased in the combustion chamber 1 as compared with the volume of the gas G to be processed introduced into the combustion chamber 1 through the first flow path 21. When trying to discharge the air to the outside through the second flow path 22 formed in the same flow path cross section , The internal pressure in the second flow path 22 is the resistance due to pressure loss is high tends to rise.
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. Therefore, the heat storage material 2C may not be able to store the amount of heat, so that the pressure in the heat exchanger chamber 3 is increased so that the exhaust g does not leak from the communication point R between the second flow path 22 and the ventilation path 2a. Although the 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 passes from the communication point R between the second flow path 22 and the ventilation path 2a to the heat exchanger chamber 3. Because it leaks in, it becomes impossible to 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 2a, and the exhaust g leaks into the heat exchanger chamber 3. Since there is a need to prevent the seal fan 24 from being consumed, the power consumption of the seal fan 24 is required, which is uneconomical.
[0004]
Therefore, an object of the present invention is to solve the above problems, suppress the pressure loss of the exhaust discharged to the outside through the second flow path, and suppress the increase in internal pressure in the second flow path and the plurality of ventilation paths, An object of the present invention is to provide a heat storage type deodorization device that can prevent exhaust gas from leaking into the heat exchanger chamber from the communication point between the second flow path and the air flow path without increasing the power of the seal fan.
[0005]
[Means for Solving the Problems]
〔Constitution〕
As illustrated in FIG. 8, the characteristic configuration of the invention of claim 1 is a first chamber for providing a combustion chamber 1 for performing a combustion treatment of odor components in the gas G to be processed and for introducing the gas G to be processed into the combustion chamber 1. In addition to forming the flow path 21, a second flow path 22 for discharging the exhaust g from the combustion chamber 1 to the outside is formed, and a plurality of ventilation paths 2a filled with the heat storage material 2C are juxtaposed in the circumferential direction. At the same time, among the plurality of air passages 2a, the exhaust gas passing state of storing heat by passing the exhaust g from the combustion chamber 1 through the second flow path 22 becomes the gas to be treated passing state, and Then, along the ventilation path 2a, the object to be processed gas passing state that preheats the gas to be processed G that is passed through the first flow path 21 with the amount of heat stored by the exhaust g is placed in the exhaust passage state. It is configured so that it can be driven and rotated around the axis P A heat storage type deodorizing apparatus provided with a heat element 2C and constituting a heat exchanging section 3A, in which a flow that forms the second flow path 22 as compared with a cross section of the flow path that forms the first flow path 21 Ri Thea forming a road section on a large, the combustion chamber 1 and the first flow path 21, and the combustion chamber 1 and the second flow path 22, through the channel cross-section is smaller throttle channel from both In the combustion chamber 1, the inner wall between the connection portion of the first flow path 21 and the connection portion of the second flow path 22 is opposed to the inner wall facing the inner wall in the combustion chamber 1. partition portion in the projecting state to the side is in the in Oh Rutokoro provided.
[0007]
In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry.
[0008]
[Action and effect]
According to the first aspect of the present invention, the flow passage cross section forming the second flow passage is formed larger than the flow passage cross section forming the first flow passage. An increase in internal pressure in the road can be suppressed.
That is, the exhaust gas, which is larger than the volume of the gas to be processed introduced into the combustion chamber through the first flow path, is formed with a flow path cross section larger than the flow path cross section forming the first flow path. In order to discharge to the outside through the second flow path, the internal pressure in the second flow path and the plurality of ventilation paths can be suppressed more easily than in the case where the first flow path is formed in the same flow path cross section. Can be suppressed.
As a result, it is possible to prevent the exhaust gas from leaking into the heat exchanger chamber from the communication point between the second flow path and the ventilation path without increasing the power of the seal fan, thus improving the economic efficiency and reliability during heat storage. It became possible to let you.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a heat storage deodorizing apparatus S which is an example of an embodiment of the present invention will be described with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.
[0011]
As shown in FIGS. 1 and 2, the heat storage deodorization apparatus S includes a combustion chamber 1 for performing a combustion treatment of odor components in the gas to be processed G, and a first flow path 21 for introducing the gas to be processed G into the combustion chamber 1. A heat exchanger chamber 3 having a second flow path 22 for discharging the exhaust g from the combustion chamber 1 to the outside, a heat exchanging portion 3A for preheating the gas G to be treated with the amount of heat stored from the exhaust g, a first Heat exchange for forming the heat exchanger chamber 3 so that the gas G does not leak from the pushing fan 23 for supplying the gas G to be processed in the flow path 21 from the heat exchanger 3A to the combustion chamber 1 and the heat exchanger 3A. A seal fan 24 for gas sealing that increases the pressure in the chamber 3 is provided. In the figure, reference numeral 25 denotes a direct exhaust duct connected to the first flow path 21 for directly exhausting the gas to be processed G without supplying it to the heat exchanger chamber 3, and reference numeral 26 in the figure denotes the gas to be processed G to the heat exchanger chamber 3. It is a bypass duct connected to the first flow path 21 for detouring the inside.
[0012]
As shown in FIGS. 3 and 8, the first flow path 21 is connected to a gas supply duct 5 to be processed that supplies the gas G to be processed from one end surface side of the heat storage body 2 to a specific location in the circumferential direction. A gas supply port 6 (hereinafter referred to as a first supply duct) and a processing object connected to a discharge duct 7 for discharging the processing object gas G that has passed through the heat accumulator 2 on the other end surface side to the receiving port 1a of the combustion chamber 1 It comprises a gas discharge port 8 (hereinafter referred to as a first discharge duct).
The second flow path 22 is connected to an exhaust supply duct 9 for supplying exhaust g discharged from the exhaust port 1b of the combustion chamber 1 to the heat storage body 2 from the other end surface side at a specific location in the circumferential direction different from the above. The exhaust discharge port portion 10 (hereinafter referred to as the second supply duct) and the exhaust discharge port portion 12 (hereinafter referred to as the second supply duct) connected to the exhaust duct 11 that discharges the exhaust g passing through the heat accumulator 2 on the one end surface side to the outside. (Referred to as a discharge duct). 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, and the second flow path for discharging the exhaust g from the combustion chamber 1. 22 is disposed on the lower side in the vertical direction, so that even if the supply amount of the gas G to be processed supplied to the combustion chamber 1 is reduced, the burner from the first flow path 21 provided on the upper side in the vertical direction is used. Since it is supplied so as to push in from the top against the upward flow of 1A, turbulent flow is likely to occur in the gas to be processed G, and it is possible to suppress the occurrence of a short path and uneven flow. Since it can be made to pass evenly through the heat storage material 2C in the ventilation path 2a via the second flow path 22, it is possible to prevent the heat storage distribution from being biased and prevent the heat exchange efficiency from being lowered. it can.
[0013]
The gas seal is configured such that the internal pressure in the first supply duct 6 and the first exhaust duct 8 is increased by a seal fan 24 that pumps the exhaust g in the exhaust duct 11 into the heat exchanger chamber 3 through the circulation duct 27. The internal pressure in the second supply duct 10 and the second exhaust duct 12, and the internal pressure in the heat exchanger chamber 3 than the internal pressure in the plurality of ventilation paths 2a filled with the heat storage material 2C in communication with the plurality of ducts. By maintaining the internal pressure high, the gas to be processed G does not leak into the heat exchanger chamber 3 from the first supply duct 6 and the first discharge duct 8, and the second supply duct 10 and the second discharge are discharged. Exhaust g is not leaked from the duct 12 into the heat exchanger chamber 3.
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 control pressure of the seal fan 24 is automatically controlled by the control device SS so as to be 10 to 50 mmAq higher than the detected pressure. Yes.
[0014]
As shown in FIG. 8, the first supply duct 6 and the first discharge duct 6 and the first discharge duct 8 are disposed between the side walls 6 a, 6 b, 8 a, and 8 b of the first discharge duct 8 and the end surface of the heat storage body 2. The gaps 13 and 14 that allow the gas in the heat exchanger chamber 3 to enter the first supply duct 6 and the first discharge duct 8 due to the difference between the pressure in the one exhaust duct 8 and the pressure in the heat exchanger chamber 3. The second supply duct 10 and the second discharge duct 12 are also formed between the side walls 10a, 10b, 12a and 12b of the second supply duct 10 and the second discharge duct 12 and the end surface of the heat storage body 2. Clearances 15 and 16 are formed that allow the gas in the heat exchanger chamber to enter the second supply duct 10 and the second discharge duct 12 due to the difference between the pressure in the discharge duct 12 and the pressure in the heat exchanger chamber 3. ing. In this connection, real value examples of the gaps 13 and 14 between the first supply duct 6 and the first discharge duct 8 and the end face of the heat storage body 2 are 0.1 to 0.5 mm. 2 Taking a real numerical example of the gaps 15 and 16 between the exhaust duct 12 and the end face of the heat storage body 2, it is 0.1 to 0.5 mm.
[0015]
Further, each of the side wall portions 6a, 6b, 8a, 8b of the first supply duct 6 and the first discharge duct 8 has a sealing cover of a size and shape that covers an end opening of one air passage 2a. Plates 17a, 17b, 18a, and 18b are connected in series, and each of the side wall portions 10a, 10b, 12a, and 12b of the second supply duct 10 and the second discharge duct 12 has a single air passage 2a. Seal cover plates 19a, 19b, 20a, and 20b having a size and shape that cover the end openings are continuously provided.
[0016]
As shown in FIG. 3, the combustion chamber 1 is formed with an inlet 1a for receiving the gas to be processed G and an exhaust port 1b for discharging the exhaust g, and the gas to be processed G received from the inlet 1a. Is provided with a burner 1A for subjecting the odor component to combustion treatment, that is, oxidative decomposition treatment.
[0017]
As shown in FIG. 3, the heat exchanger chamber 3 is formed with a second flow path 22 for discharging the exhaust g from the combustion chamber 1 to the outside, and a plurality of ventilation paths filled with the heat storage material 2C. 2a are juxtaposed in the circumferential direction, and among the plurality of air passages 2a, there is an exhaust passage state in which heat is stored by passing the exhaust g from the combustion chamber 1 through the second flow passage 22. An object to be processed gas passing state that preheats the gas to be processed G that passes through the first flow path 21 with the amount of heat stored by the exhaust gas g is in an exhaust gas passing state. Thus, a heat exchanging portion 3A provided with a heat storage body 2C that is configured to be driven and rotated around the axis P along the air passage 2a is configured.
[0018]
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 2B for partitioning the inside of the main body 2A into a plurality of air passages 2a in the circumferential direction. Each of the air passages 2a has a structure in which the heat storage material 2C is filled, that is, a structure in which a plurality of air passages 2a filled with the heat storage material 2C are juxtaposed in the circumferential direction. It is installed so as to be rotatable around the core P, and is driven by a motor 4 outside the heat exchanger chamber 3.
[0019]
As shown in FIGS. 5 to 7, the heat storage material 2 </ b> C is separated from the upper and lower sides of fins F formed by bending a plurality of thin metal plates such as stainless steel and aluminum at a certain height, with a plate B interposed therebetween. The metal honeycomb formed by laminating the fins F is filled with a metal honeycomb in which the cross section of the flow path becomes larger at the higher temperature side than at the lower temperature side. 2D is a net that prevents the heat storage material 2C from falling off the air passage 2a. Further, the end portions on both duct sides of the heat storage material 2C filled in the air passage 2a partitioned by the partition wall 2B are formed in a state of being retracted inward from the cylindrical main body 2A as shown in FIG. Therefore, even if most of the opening of the air passage 2a is covered by the sealing cover plates 17a and 18a connected to the side wall portions of the first supply duct 6 and the first discharge duct, the air passage 2a is formed in the duct. If a part is opened, it is possible to pass the gas G to be processed through the entire air passage 2a. (The effect in the 2nd supply duct 10 and the 2nd discharge duct 12 is also the same.)
Incidentally, in this embodiment, the inside of the main body 2A is equally divided into 16 air passages 2a.
[0020]
Next, it demonstrates along the flow of the gas in the thermal storage type deodorizing apparatus S. FIG.
As shown in FIG. 3, when the gas G to be processed passes through the plurality of ventilation paths 2 a provided in the heat storage body 2 from the first duct 6, the gas to be processed G is in contact with the heat storage material 2 </ b> C in the ventilation path 2 a. 1 is discharged and supplied into the combustion chamber 1 through a receiving port 1 a formed in the discharge duct 8.
And in order to carry out the combustion process of the odor component in the to-be-processed gas G in the combustion chamber 1, it heat-processes by the burner 1A in the combustion chamber 1, and it is 2nd supply duct via the exhaust port 1b provided in the combustion chamber 1. When passing through a plurality of air passages 2a provided in the heat storage body 2C from 10, the air is discharged from the second exhaust duct 12 to the outside while being in contact with the heat storage material 2C in the air passage 2a.
[0021]
At this time, when the exhaust g from the combustion chamber 1 is passed through the second flow path 22, the heat storage material 2 </ b> C in the ventilation path 2 a stores heat, while the gas to be processed G supplied to the combustion chamber 1 is stored. When the gas passage 2a is passed through the first flow path, the object that has been in the exhaust passage state becomes the gas passage state to be treated so that the gas to be treated G can be preheated with the amount of heat stored from the exhaust g, and The heat accumulator 2 is configured to be rotatable around the rotation axis P so that an object that has been in the process gas passage state is in an exhaust passage state.
[0022]
Further, since the heat-treated process gas is not only thermally expanded, but also the exhaust gas of the burner 1A and the seal air entering from the gaps 14 and 15 are added, the volume of the exhaust g consisting of the process gas, the exhaust gas of the burner and the seal air is Although the volume of the gas to be processed G supplied into the combustion chamber 1 is larger than the volume of the gas G to be processed, it is larger than the cross section of the flow path forming the first flow path 21 (in this embodiment, four half of the ventilation paths). Since the cross section of the flow path forming the two flow paths 22 (in this embodiment, half of the five ventilation paths) is formed large, the pressure loss of the exhaust g discharged to the outside through the second flow path 22 is suppressed. An increase in internal pressure in the second flow path 22 and the plurality of ventilation paths 2a can be suppressed, and the communication path R between the second flow path 22 and the ventilation path 2a can be increased without increasing the power of the seal fan 24. The exhaust g leaks into the heat exchanger chamber 3 It can be stopped, it has become possible to improve the reliability at the time of economy and heat storage.
[0023]
For example, if the actual numerical value of the temperature is given, the temperature of the gas G to be processed in the first supply duct 6 is 160 ° C., and the gas to be processed in the first exhaust duct 8 that receives the gas G to be processed heated by the heat storage body 2 is used. The temperature of the gas G is 670 ° C., the exhaust temperature in the second supply duct 10 after combustion is 760 ° C., and the temperature of the exhaust g in the second exhaust duct 12 that receives the exhaust g after heating the heat storage body 2 is 300 ° C. It is.
[Another embodiment]
Other embodiments will be described below.
<1> The heat storage material is not limited to a configuration in which a plurality of metal fins made of stainless steel, aluminum, or the like are arranged in the air passage described in the previous embodiment to perform heat exchange. It may be configured to perform heat exchange by filling a plurality of stages of pipes made of ceramic or ceramic in the axial direction.
For example, the thing of the structure which arrange | positions the porous ceramics which have a communicating hole in a ventilation path, and performs heat exchange may be sufficient.
Further, for example, a structure in which a plurality of metal or ceramic particles are filled in an air passage and heat exchange is performed using the particles.
[Brief description of the drawings]
FIG. 1 is an overall side view showing a heat storage deodorizing apparatus according to an embodiment of the present invention. FIG. 2 is an overall plan view showing a heat storage deodorizing apparatus according to an embodiment of the present invention. FIG. 4 is a longitudinal front view showing a heat storage body according to an embodiment of the present invention. FIG. 5 is a vertical side view showing a main part of the heat storage body according to an embodiment of the present invention. FIG. 6 is a developed cross-sectional view showing a heat storage body according to an embodiment of the present invention. FIG. 7 is a partial perspective view showing a heat storage material according to an embodiment of the present invention. FIG. 9 is a developed longitudinal sectional view showing a conventional heat storage deodorizing apparatus.
DESCRIPTION OF SYMBOLS 1 Combustion chamber 1A Burner 2C Thermal storage material 3 Heat exchanger chamber 24 Seal fan 21 1st flow path 22 2nd flow path G Processed gas g Exhaust S Thermal storage deodorizing apparatus R Communication location

Claims (1)

A combustion chamber for combusting odor components in the gas to be processed is provided, a first flow path for introducing the gas to be processed into the combustion chamber is formed, and exhaust from the combustion chamber is discharged to the outside A second flow path is formed, and a plurality of ventilation paths filled with the heat storage material are juxtaposed in the circumferential direction, and exhaust from the combustion chamber is allowed to pass through the second flow path among the plurality of ventilation paths. In this way, the object that has been in the exhaust passage state where heat is accumulated becomes the treatment gas passage state, and the treatment gas passage state that preheats the treatment gas that is passed through the first flow path with the amount of heat stored by the exhaust gas. A heat storage type deodorizing apparatus comprising a heat storage body configured to be driven and rotatable around an axis along the air passage so that an existing object is in an exhaust passage state, and constituting a heat exchange unit. ,
Wherein the channel cross section for forming the second flow path as compared with the channel cross-section to form a first flow path formed on a large tare is, the first flow path and said combustion chamber, and said combustion chamber And the second flow path are connected to each other through a throttle flow path having a smaller flow path cross section than both, and the connection portion of the first flow path and the connection portion of the second flow path in the combustion chamber the inner wall between, Oh Ru regenerative deodorizing device partitioning portion is provided in the projecting state to the opposite inner wall facing the inner wall in the combustion chamber.

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