JP4089564B2 - Deodorization device - Google Patents

Description

  The present invention relates to a deodorizing apparatus that decomposes and deodorizes an odorous substance contained in a gas heated by a heater by a chemical reaction.

  2. Description of the Related Art Conventionally, a deodorizing device that uses a catalyst to deodorize by oxidizing an odorous substance contained in a gas has been used for exhaust gas deodorization in a garbage disposal device or the like (see, for example, Patent Document 1). In this type of deodorizing apparatus, an odorous substance is generally heated with a heater and oxidized using a catalyst to deodorize. Further, in order to lower the temperature of the deodorized gas and suppress the energy consumption required for heating the gas, a deodorizing apparatus including a heat exchanger for exchanging heat between the gas after deodorization and the gas before deodorization is provided. ing.

As a deodorizing apparatus provided with such a heat exchanger, the present applicant has already proposed a deodorizing apparatus as shown in FIG. This deodorizing apparatus has a heater 10 ′ for heating a gas containing an odor substance, and an intake port 12a ′ for taking in the heated gas, and an odor substance contained in the gas taken in from the intake port 12a ′. A deodorizing part 11 ′ that removes and deodorizes by a chemical reaction (oxidation), and a sealed cylinder having a heater 10 ′ and a deodorizing part 11 ′ on one end side and a gas containing an odor substance on the other end side And a vessel 1 ′ provided with an inflow port from which the deodorized gas flows out and an outflow port through which the deodorized gas flows to the outside, and a vessel connected to the inside of the deodorizing part 11 ′ at one end and to the outflow port at the other end. A plurality of inner pipes 21 ′ are formed between the inner surface of the body 1 ′ and a gas inflow path communicating with the inflow port. Between the gas passing through the inner pipe 21 ′ and the gas passing through the inflow path Heat exchanging section 20 ′ for exchanging heat through the pipe wall of inner pipe 21 ′, inlet and outlet Is provided with heat insulating materials 30 ₁ ′ to 30 ₅ ′ interposed between the inner surface excluding the other end side of the container body 1 ′ and the heater 10 ′, and a deodorizing portion is provided on one end side of the inner tube 21 ′. 11 'is supported, and the heat exchanging portion 20' is cantilevered and supported by the container 1 'at the other end of the inner tube 21'.

  The container 1 ′ is composed of a rectangular tube-shaped body 2 ′ whose one end surface in the longitudinal direction is open, and a cover 3 ′ which closes the opening surface of the body 2 ′. The inflow port is formed by inserting a cylindrical inflow pipe 4 ′ open at both ends into the wall surface of the body 2 ′. Further, the outflow port is composed of an outflow pipe 5 ′ in which a box part 5 b ′ whose one surface is open is integrally formed on one end side of a cylindrical pipe part 5 a ′ whose both ends are open. The gas containing the odorous substance is introduced from the inflow port (inflow pipe 4 ′) through the inflow path to the intake port 12a ′ of the deodorizing part 11 ′, and the odorous substance is absorbed by the catalyst built in the deodorizing part 11 ′. Deodorized by being oxidized. And the gas deodorized by the deodorizing part 11 'passes through the inner pipe 21' of the heat exchanging part 20 'and is exhausted from the outlet (outflow pipe 5'). Further, when passing through the heat exchange section 20 ′, heat exchange is performed between the gas passing through the inflow passage through the tube wall of the inner tube 21 ′ (the gas before deodorization) and the gas passing through the inner tube 21 ′ (the gas after deodorization). Is performed, and at the same time as the temperature of the gas before deodorization is raised, the temperature of the exhausted gas is lowered.

The heat insulating material 30 ′ is a rectangular plate-shaped first heat insulating material 30 ′ ₁ disposed on the inner bottom surface of the body 2 ′, and a long second to second material disposed on the inner peripheral surface of the body 2 ′. is composed of a heat insulating material 30 _{'2-30' 5} 5, _{2-30 5} 'end of each' second to fifth insulation 30 on four sides of the ₁ 'first insulation material 30 equivalents It is assembled in a rectangular tube shape with one end face in the longitudinal direction being opened. In the figure, reference numeral 50 denotes a baffle plate that is formed in a flat plate shape in which an inner pipe 21 ′ made of a straight pipe penetrates the front and back, and obstructs the gas flow by meandering the inflow path.

In addition, a temperature sensor (not shown) for detecting the temperature of the taken-in gas is disposed in the vicinity of the intake port 12a ′ in the deodorizing unit 11 ′, and the temperature detected by this temperature sensor is used to deodorize the catalyst. The amount of current supplied to the heater 10 ′ (the amount of heat generated by the heater 10 ′) is controlled by a control device (not shown) so that the temperature is optimal.
Japanese Patent Laid-Open No. 11-188342

  By the way, in the said conventional apparatus, since the end surface where intake port 12a 'of deodorizing part 11' opens is a flat surface, the gas taken in from intake port 12a 'through an inflow channel is the peripheral edge of end surface of deodorizing part 11' The temperature distribution of the gas that peels from the portion and is taken in from the intake port 12a ′ may become non-uniform in a plane orthogonal to the axial direction (the direction of gas flow) of the deodorizing portion 11 ′. If the temperature distribution of the container becomes non-uniform, if the temperature sensor detects a relatively low temperature, the amount of current supplied to the heater 10 'increases more than necessary, and the temperature sensor If the temperature in the high temperature range is detected, the amount of current supplied to the heater 10 'will be insufficient, and in any case, the gas temperature in the deodorizing part 11' will rise or fall excessively and the efficiency of the catalyst deodorizing process will decrease. In addition, there is a problem in that the gas heating efficiency by the heater 10 'decreases and the running cost increases.

  This invention is made | formed in view of the said situation, The objective is to provide the deodorizing apparatus which can improve the heating efficiency of the gas by a heater and can aim at reduction of a running cost.

In order to achieve the above object, the invention of claim 1 has a heater for heating a gas containing an odor substance, and an intake for taking in the gas heated by the heater, and promotes a chemical reaction of the odor substance. Heat exchange is performed between the deodorized part that contains the catalyst and removes the odorous substances contained in the gas taken in from the intake through a chemical reaction and deodorizes, and the gas deodorized in the deodorized part and the gas before deodorizing. It is formed in a sealed cylindrical shape having a heat exchanging portion to be performed, an inflow port from which the gas containing the odorous substance flows from the outside, and an outflow port from which the deodorized gas heat-exchanged in the heat exchanging portion flows out to the outside, In a deodorizing apparatus comprising a heater, a deodorizing unit, and a container in which a heat exchanging unit is housed, an intake port of the deodorizing unit is disposed on one end side in the axial direction of the container, and the axial direction of the container is When the inlet is arranged on the other end side In, wherein the flow inlet is opened toward the other end side of the inner wall of the vessel body.

  According to this invention, since the gas flowing in from the inlet hits the inner wall of the vessel and the flow path changes, the gas after hitting the inner wall flows almost uniformly in the vessel, and the gas taken in from the intake port The temperature distribution can be made uniform in a plane perpendicular to the axial direction of the deodorizing unit. As a result, the gas heating efficiency by the heater can be improved and the running cost can be reduced.

In order to achieve the above object, the invention of claim 2 has a heater for heating a gas containing an odor substance, and an intake for taking in the gas heated by the heater, and promotes a chemical reaction of the odor substance. Heat exchange is performed between the deodorized part that contains the catalyst and removes the odorous substances contained in the gas taken in from the intake through a chemical reaction and deodorizes, and the gas deodorized in the deodorized part and the gas before deodorizing. It is formed in a sealed cylindrical shape having a heat exchanging portion to be performed, an inflow port from which the gas containing the odorous substance flows from the outside, and an outflow port from which the deodorized gas heat-exchanged in the heat exchanging portion flows out to the outside, In a deodorizing apparatus comprising a heater, a deodorizing unit, and a container in which a heat exchanging unit is housed, an intake port of the deodorizing unit is disposed on one end side in the axial direction of the container, and the axial direction of the container is When the inlet is arranged on the other end side In, wherein the flow inlet is provided on both sides of the device body across the heat exchanger.

  According to the present invention, the flow of gas varies only with one of the inlets, but by arranging the two inlets equally, the gas flows almost uniformly in the vessel body, The temperature distribution of the gas taken in from the intake port can be made close uniformly in a plane perpendicular to the axial direction of the deodorizing unit, and as a result, the heating efficiency of the gas by the heater can be improved and the running cost can be reduced.

According to the first aspect of the present invention, since the gas flowing in from the inlet contacts the inner wall of the vessel and the flow path changes, the gas after hitting the inner wall flows almost uniformly in the vessel and is taken in from the intake port. The temperature distribution of the generated gas can be made uniform in a plane perpendicular to the axial direction of the deodorizing part, and as a result, the heating efficiency of the gas by the heater can be improved and the running cost can be reduced.

Before describing an embodiment of the present invention, a reference example having the same basic configuration as the present invention will be described.

( Reference example )
The deodorizing apparatus of this reference example has a heater 10 for heating a gas containing an odorous substance as shown in FIGS. 1 and 2, and an intake 41a for taking in the gas heated by the heater 10 into the interior, and the odorous substance A deodorizing unit 11 that incorporates a catalyst that promotes a chemical reaction, removes odorous substances contained in the gas taken in from the intake port 41a by a chemical reaction (oxidation reaction), and deodorizes; The heater 10 and the deodorizing part 11 are housed on one end side, and the container body 1 is provided with an inflow port from which the gas containing the odorous substance flows in from the outside and an outflow port from which the deodorized gas flows out to the outside on the other end side, It has a plurality of inner pipes 21 which communicate with the inside of the deodorizing part 11 at one end side and communicate with the outflow port at the other end side and form a gas inflow path which communicates with the inflow port between the inner surface of the container body 1. Gas passing through the inner pipe 21 and gas passing through the inflow passage Between the heater 10 and the inner surface excluding the other end side of the vessel body 1 provided with an inlet and an outlet. The heat insulating material 30 is provided.

  The body 1 is made of metal and has a rectangular tube-like body 2 whose one surface (upper surface in FIG. 1) along the longitudinal direction is open, and a flat cover 3 that closes the opening surface (upper surface) of the body 2. And is assembled by joining the cover 3 to the opening surface of the body 2 by welding or screwing.

  A rectangular outflow port 2a penetrating into and out of the body 2 is provided on one end surface (left end surface in FIG. 1) opposed to the longitudinal direction of the body 2, and an outflow pipe 5 communicating with the body 2 through the outflow port 2a. Is attached. The outflow pipe 5 is formed in a box shape and is attached to the side surface of the body 2 from the outside so as to block the outflow port 2a, and is formed in a cylindrical shape having both ends open to the box portion 5a on one end side. It is comprised with the pipe part 5b connected. In addition, on one side surface (the lower surface in FIG. 2) facing the short side direction of the body 2, a cylindrical inflow pipe (inlet) that protrudes laterally is provided in the vicinity of the end on the side where the outflow pipe 5 is attached. ) 4 is provided, and a gas containing an odorous substance is caused to flow into the inflow path in the container body 1 through the inflow pipe 4.

  The heater 10 is formed in a continuous waveform by a wire that generates heat when energized, and a U-shaped connecting portion 10b that connects the straight portions 10a parallel to each other at a predetermined distance and the adjacent straight portions 10a at the ends. And a pair of wires that are extended from one end of the straight portions 10a at both ends and drawn out of the body 1 through a through hole 2b (see FIG. 2) penetrating through either side of the body 2 facing in the short direction. It consists of terminal portions 10c, and generates heat when energized between a pair of terminal portions 10c. Each bottom surface of the body 2 (the lower surface in FIG. 1), both side surfaces facing in the lateral direction, and the opening surface. It arrange | positions so that it may oppose. Each terminal portion 10c is supported by penetrating a support 6 made of an insulating material and attached to the through hole 2b of the body 2.

  As shown in FIG. 3, the deodorization unit 11 includes a columnar honeycomb structure 40 to which a deodorization catalyst such as a platinum catalyst is attached, and a pair of storage boxes that are formed in a prismatic shape and in which the honeycomb structure 40 is stored. 12 and a case 41 in which a pair of storage boxes 12 are stored. The storage box 12 has cylindrical storage holes 12a that are open at both end surfaces in the longitudinal direction (axial direction) and communicate with each other, and the two honeycomb structures 40 coincide with each other in the storage hole 12a. Is inserted as The case 41 is formed of a metal material into a bottomed rectangular tube shape, and a pair of intake ports 41a are provided in parallel on the bottom surface, and a pair of storage boxes for storing and holding the honeycomb structure 40 in the storage holes 12a. 12 is inserted from the opening on one end side. And the one end surface of each honeycomb structure 40 hold | maintained at the storage box 12 opposes the intake 41a of the bottom face of case 41, and the gas which flowed through the inflow path in the container 1 opens to the one end surface of case 40 The gas that has been taken into the honeycomb structure 40 from the pair of intake ports 41a and has been oxidized and removed by the catalyst through the inner tube 21 is discharged from the other end surface of the case 40 to the outside. Here, in the state in which the case 40 is housed in the container 1, the four heaters 10 are arranged close to the four side surfaces of the case 40, respectively, and the odorous substance taken into the honeycomb structure 40 by the heat generated by the heater 10. The gas containing is heated and oxidized by the catalyst.

  The plurality of inner tubes 21 constituting the heat exchange unit 20 are connected to the opening end face of the case 40 of the deodorizing unit 11, and a mounting plate 22 having a rectangular flat plate shape is provided at the tip of each inner tube 21. The mounting plate 22 is cantilevered at the outflow port 2 a on one end face facing the longitudinal direction of the body 2 to communicate the inner tube 21 and the outflow tube 5.

  Thus, the gas deodorized in the deodorizing unit 11 is exchanged from the inner tube 21 after the heat exchange with the gas before deodorization flowing through the inflow path while passing through the inner tube 21 (heat exchanging unit 20). The air is exhausted out of the body 1 through the air.

The heat insulating material 30 is composed of a total of five heat insulating materials 30 ₁ to 30 _{5. The} heat insulating material 30 is interposed between the five inner surfaces excluding one end surface where the outlet 2 a inside the container body 1 opens, and the heater 10 and the heat exchange unit 20. (See FIGS. 1 and 2). Interposed between the heat insulating member 30 ₁ Utsuwatai 1 (body 2) the inner bottom surface and the heater 10 and the heat exchange portion 20 of a rectangular flat plate shape vessel body 1 having substantially the same size and shape as the inner bottom surface of the Is done. Further, the heat insulating material 30 ₄ is formed in a rectangular flat plate shape having substantially the same size and shape as the opening surface of the body 2 (the inner surface of the cover 3), and is stacked on the heat insulating materials 30 ₂ and 30 ₃ so as to be stacked. 1 is interposed between the heater 10 and the heat exchanging unit 20.

On the other hand, the heat insulating materials 30 ₂ and 30 ₃ are each formed in a flat plate shape, and are stacked on the heat insulating material 30 ₁ so that the side surface of the container 1 (body 2) facing in the short direction, the heater 10 and the heat exchange. It is interposed between each part 20. Here, at both ends of the central portion along the longitudinal direction of each heat insulating material 30 ₂ , 30 ₃ , a recess 33 into which the terminal portion 10 c of the heater 10 is inserted is provided, respectively, and one heat insulating material 30 is further provided. ₃ is provided with a notch 34 for communicating the inflow pipe 4 with the inflow passage in the vessel 1 at one longitudinal end. Heat insulating member 30 ₅ is also formed on the same flat plate, as stacked on top of the heat insulating member 30 _1, the outlet 2a of one end face and Utsuwatai 1 deodorization portion 11 inlet 41a is opened (body 2) (See FIG. 2). As shown in FIG. 1, heat insulating materials 35 _{1 to} 35 ₃ that cover the other five inner surfaces excluding the surface communicating with the outlet 2 a are also stored in the box portion 5 a of the outflow pipe 5.

Next will be described the structure of the deodorizing unit 11.

As described in the prior art, when the end surface where the intake port 41a of the deodorizing unit 11 opens is a flat surface, the gas taken in from the intake port 41a through the inflow path as shown in FIG. A phenomenon occurs in which the temperature distribution of the gas that is peeled off from the peripheral edge portion of the gas and taken in from the intake port 41a is not uniform in a plane orthogonal to the axial direction (the direction of gas flow) of the deodorizing unit 11. However, the part surrounded by the dotted line in FIG. Therefore, in the present reference example , a flange 42 is provided on the bottom surface of the case 41 of the deodorizing unit 11, and the gas temperature distribution is made uniform by the flange 42. As shown in FIG. 3, the collar portion 42 is provided integrally with the case 41 so as to project outward from the bottom surface of the case 41 along the longitudinal direction and surround the periphery of the intake port 41 a.

Here, as shown in FIG. 6, the present inventors have passed through the honeycomb structure 40 with respect to the conventional type deodorizing part 11 ′ not having the collar part 42 and the deodorizing part 11 of the present reference example having the collar part 42. An experiment was conducted to measure the temperature distribution of the gas and the flow velocity of the gas. In the experiment, as shown in FIG. 5, the temperature probe 50 having a thermistor for temperature measurement at the tip portion is used to measure the temperature (° C.) of the gas at the three locations of the inlet, center and outlet of the honeycomb structure 40, Similarly, the flow velocity (m / s) of the gas is measured at three locations of the inlet, the center, and the outlet of the honeycomb structure 40 by a flow meter (not shown).

  FIGS. 7 and 8 show the temperature distribution and flow velocity measurement results for the conventional type deodorizing part 11 ′, and FIGS. 9 and 10 show the temperature distribution when the amount of protrusion from the bottom surface of the case 41 to the tip of the collar part 42 is 15 mm. FIG. 11 and FIG. 12 are measurement results of the temperature distribution and the flow velocity when the protrusion amount is 30 mm, and (a), (b), and (c) of each figure are the results of the honeycomb structure 40, respectively. Each part of the entrance, center and exit is shown. From these measurement results, the higher the flow velocity, the higher the temperature, and the lower the flow velocity, the lower the temperature. Further, a location far from the case 41, that is, a location where gas separation hardly occurs (in FIGS. 7 to 12). It can be seen that the flow velocity is faster toward the middle right). That is, in the conventional type deodorizing unit 11 ′, as shown in FIG. 6, the bottom surface of the case 41 is in contact with the gas separation point X, so that it is difficult for the gas to flow behind the separation point X (to the right in FIG. 6). Therefore, the flow velocity is relatively slow and the temperature is relatively low at the portion corresponding to the peeling portion X (right side central portion in FIGS. 7 and 8) at all the inlet, center, and outlet portions of the honeycomb structure 40. The temperature distribution is high and the temperature distribution is uneven. In addition, the arrow in FIG. 6 represents the flow of gas.

On the other hand, in the deodorizing part 11 of this reference example in which the collar part 42 is provided in the case 41, a space (gap) W is generated between the bottom surface of the case 41 and the gas separation point X as shown in FIG. Compared with the deodorizing part 11 ′ of the type, the gas is more likely to flow around behind the peeling portion X (right direction in FIG. 5). Therefore, as shown in FIGS. 9 to 12, the small flow velocity range is relatively small and the large flow velocity range is relatively large and the temperature is increased at all of the inlet, center, and outlet of the honeycomb structure 40. The highest range is approaching from the end of the honeycomb structure 40 to the center, and as a result, the temperature distribution is uniform compared to the conventional type deodorizing part 11 ′. In addition, the arrow in FIG. 5 represents the flow of gas.

  Further, comparing the result when the protrusion amount of the collar 42 is small (15 mm) (FIGS. 9 and 10) and the result when the protrusion amount is large (30 mm) (FIGS. 11 and 12), the protrusion amount is The larger the flow velocity, the smaller the flow velocity decreases, the larger the flow velocity increases, and the absolute value of the flow velocity decreases. The highest temperature range is closer to the center of the honeycomb structure 40. However, the temperature in the highest range is lower as the protruding amount of the flange 42 is larger.

  As described above, the gas is peeled off from the deodorizing part 11 (the bottom surface of the case 41) in the flange part 42, but by providing the flange part 42 on the bottom surface of the case 41, the deodorizing part 11 in which the intake 41a is opened from the peeling point X. Since the distance to the end surface (the bottom surface of the case 41) is farther than that of the conventional type due to the flange portion 42, the temperature distribution of the gas taken in from the intake port 41a is uniform in a plane orthogonal to the axial direction of the deodorizing portion 11 As a result, the gas heating efficiency by the heater 10 can be improved and the running cost can be reduced. Further, in view of the relationship between the protrusion amount of the flange portion 42 and the temperature distribution, it is considered desirable to increase the protrusion amount of the flange portion 42 as the flow velocity of the gas taken in from the intake port 41a increases. That is, since the degree of gas separation generally increases as the flow rate increases, the protruding amount of the flange 42 is increased when the gas flow rate is high, and the protruding amount of the flange 42 when the gas flow rate is low. The temperature distribution of the gas taken in from the intake port 41a can be made more uniform in a plane orthogonal to the axial direction of the deodorizing unit 11 by reducing the value.

  By the way, the cause of the non-uniform temperature distribution in the deodorizing part 11 includes a deviation of the gas flow rate in the vessel 1 in addition to the above-described peeling phenomenon. That is, as shown in FIG. 14, since the inflow pipe (inlet) 4 is provided on the side surface of the container body 1, the gas flowing in through the inflow pipe 4 flows on the side surface opposite to the side on which the inflow pipe 4 is provided. (However, the arrow in FIG. 14 represents the flow of gas). As a result, the temperature distribution varies between the two honeycomb structures 40, and the temperature distribution in each honeycomb structure 40 also becomes non-uniform.

Therefore, as shown in FIG. 13, a baffle plate 60 may be provided in the vicinity of the inflow pipe 4 of the heat exchange unit 20 to restrict the gas flow path to the vicinity of the heat exchange unit 20. As shown in FIG. 15, the baffle plate 60 is formed of a rectangular flat plate-like metal plate, and includes a plurality of insertion holes 61a through which the plurality of inner tubes 21 of the heat exchanging unit 20 are inserted, and four insertion holes in the center portion. than the insertion hole 61a connecting the 61a becomes and is a communication hole 61b having a larger diameter formed through, the base 1 by its periphery is fitted into a groove 62 provided in the heat insulating material 30 ₁ to 30 ₄ It is fixed inside.

  Thus, the baffle plate 60 restricts the gas inflow path to the communication hole 61b penetrating in the vicinity of the heat exchanging portion 20, that is, the central portion of the baffle plate 60. The gas flows almost evenly in the short direction of the vessel 1 (vertical direction in FIG. 13). As a result, variation in temperature distribution between the two honeycomb structures 40 can be suppressed, and the temperature distribution in each honeycomb structure 40 can be made uniform. Here, among the four insertion holes 61a in the central portion communicating with the communication hole 61b, the distance between the centers of the two adjacent insertion holes 61a is set to be equal to each other, and a plurality (12 pieces) of peripheral portions not communicating with the communication hole 61b are set. The center-to-center distance between two adjacent insertion holes 61a in the insertion holes 61a is set to be equal to each other. That is, the distance between the centers of the two adjacent inner pipes 21 is set to be equal to each other, so that the gas enters the inner pipe 21 equally from any direction, and the gas is heated evenly. It can contribute to uniform temperature distribution. In addition, since the collar part 42 is provided in the case 41 of the deodorizing part 11, it can prevent that temperature distribution becomes non-uniform | heterogenous by gas peeling. Further, in view of the relationship between the protrusion amount of the flange portion 42 and the temperature distribution, it is desirable to increase the protrusion amount of the flange portion 42 as the flow velocity of the gas taken in from the intake port 41a increases.

(Embodiment 1 )
This embodiment is characterized in that the inlet opens toward the mounting plate 22 of the container body 1, and other configurations are the same as those in the reference example .

  As shown in FIG. 16, the inflow pipe 4 serving as an inflow port is provided to be inclined with respect to the container body 1 so that the gas flowing in through the inflow pipe 4 hits the mounting plate 22. That is, the gas that hits the mounting plate 22 passes through the central portion of the container 1 where the heat exchange unit 20 is disposed, and flows almost evenly in the short direction of the container 1 (vertical direction in FIG. 16). . As a result, variation in temperature distribution between the two honeycomb structures 40 can be suppressed, and the temperature distribution in each honeycomb structure 40 can be made uniform. In addition, since the collar part 42 is provided in the case 41 of the deodorizing part 11 also in this embodiment, it can prevent that temperature distribution becomes non-uniform | heterogenous by gas peeling. Further, in view of the relationship between the protrusion amount of the flange portion 42 and the temperature distribution, it is desirable to increase the protrusion amount of the flange portion 42 as the flow velocity of the gas taken in from the intake port 41a increases.

(Embodiment 2 )
The present embodiment is characterized in that the inflow ports are provided on both sides of the container body 1 with the heat exchanging unit 20 interposed therebetween, and other configurations are the same as those in the reference example .

  As shown in FIG. 17, inflow pipes 4 serving as inflow ports are provided on both side surfaces of the container body 1 with the heat exchange unit 20 interposed therebetween, and gas containing odorous substances passes through the two inflow pipes 4 and the container body 1. It comes to flow in.

  Thus, although only one of the inflow pipes 4 causes variations in the gas flow, the two inflow pipes 4 are evenly arranged as in the present embodiment, so The gas flows almost evenly in the direction (vertical direction in FIG. 17). As a result, variation in temperature distribution between the two honeycomb structures 40 can be suppressed, and the temperature distribution in each honeycomb structure 40 can be made uniform. In addition, since the collar part 42 is provided in the case 41 of the deodorizing part 11 also in this embodiment, it can prevent that temperature distribution becomes non-uniform | heterogenous by gas peeling. Further, in view of the relationship between the protrusion amount of the flange portion 42 and the temperature distribution, it is desirable to increase the protrusion amount of the flange portion 42 as the flow velocity of the gas taken in from the intake port 41a increases.

It is a disassembled perspective view of the reference example of this invention . It is a perspective view of the state which removed the cover and deodorizing part same as the above. It is a disassembled perspective view of the deodorizing part in the same as the above. It is a perspective view which shows the conventional deodorizing part. It is sectional drawing of the deodorizing part same as the above used for experiment. It is sectional drawing of the conventional deodorizing part used for experiment. The experimental result of a prior art example is shown, (a)-(c) is a temperature distribution figure in the inlet_port | entrance, center, and exit of a honeycomb structure, respectively. The experimental result of a prior art example is shown, (a)-(c) is the flow velocity distribution map of the gas in the inlet_port | entrance, the center, and an exit of a honeycomb structure, respectively. The experimental result when the collar part in the same as the above is 15 mm is shown, and (a) to (c) are temperature distribution diagrams at the inlet, center and outlet of the honeycomb structure, respectively. The experimental result when the collar part in the same as the above is 15 mm is shown, (a)-(c) is a flow velocity distribution diagram of the gas at the entrance, the center, and the exit of the honeycomb structure, respectively. The experimental result when the collar part in the same as the above is 30 mm is shown, (a)-(c) is a temperature distribution diagram at the entrance, the center, and the exit of the honeycomb structure, respectively. The experimental result when the collar part in the same is 30 mm is shown, (a)-(c) is a flow velocity distribution diagram of the gas at the entrance, the center, and the exit of the honeycomb structure, respectively. It is sectional drawing which abbreviate | omitted partially showing the other example same as the above. It is explanatory drawing explaining the gas flow of a prior art example. It is a top view of the baffle plate in the same as the above. FIG. 3 is a partially omitted cross-sectional view showing the first embodiment. FIG. 5 is a partially omitted cross-sectional view showing a second embodiment. It is a disassembled perspective view of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 11 Deodorizing part 12 Storage box 20 Heat exchange part 40 Honeycomb structure 41 Case 41a Inlet 42 Gutter part

Claims (2)

Included in the gas that has a heater that heats the gas containing the odorous substance and an intake that takes in the gas heated by the heater, and that contains a catalyst that promotes the chemical reaction of the odorous substance. The deodorizing part that removes odorous substances by chemical reaction and deodorizes, the heat exchange part that exchanges heat between the gas deodorized in the deodorizing part and the gas before deodorizing, and the gas containing the odorous substance from the outside A device in which a heater, a deodorizing part, and a heat exchanging part are housed in an inflow inlet and a sealed cylinder having an outlet from which the deodorized gas heat-exchanged in the heat exchanging part flows out. In the deodorizing apparatus comprising the body, the intake port of the deodorizing part is disposed on one end side in the axial direction of the container body, and the inlet is disposed on the other end side in the axial direction of the container body. Toward the inner wall of the other end of the vessel Deodorizing device which is characterized in that opening. Included in the gas that has a heater that heats the gas containing the odorous substance and an intake that takes in the gas heated by the heater, and that contains a catalyst that promotes the chemical reaction of the odorous substance. The deodorizing part that removes odorous substances by chemical reaction and deodorizes, the heat exchange part that exchanges heat between the gas deodorized in the deodorizing part and the gas before deodorizing, and the gas containing the odorous substance from the outside A device in which a heater, a deodorizing part, and a heat exchanging part are housed in an inflow inlet and a sealed cylinder having an outlet from which the deodorized gas heat-exchanged in the heat exchanging part flows out. In the deodorizing apparatus comprising the body, the intake port of the deodorizing part is disposed on one end side in the axial direction of the container body, and the inlet is disposed on the other end side in the axial direction of the container body. On both sides of the container Vignetting deodorizing device you characterized in that the.