Odor gas treatment device

Abstract

An odorous gas treatment device is provided with: a combustion chamber (10) that heats and decomposes an odorous gas (Gn) by means of combustion by a burner (12); a heat storage chamber (20) that is provided below the combustion chamber, stores heat of combustion exhaust gas (Gn1) of the odor gas that has been thermally decomposed in the combustion chamber in a heat storage material (21), and decomposes the odor gas remaining in the combustion exhaust gas by means of the heat stored in the heat storage material; and an exhaust unit (22) that discharges exhaust gas (Gn2), which is obtained by decomposing the odor gas in the heat storage chamber, in the transverse direction.

Description

Technical Field

[0001] The present invention relates to an odor gas treatment device that decomposes and treats odor gases containing ammonia and the like. In particular, it has the following characteristics: when decomposing and treating odor gases containing ammonia and the like, it can efficiently decompose and treat odor gases without increasing the size of the device. Background Art

[0002] In the past, from the perspective of environmental hygiene, odor gases containing ammonia and the like have been decomposed and treated.

[0003] Moreover, in Patent Document 1, a device is shown in which a treatment target gas containing ammonia is decomposed in an ammonia decomposition chamber by heat from an electric heater, the treatment target gas containing nitrogen and hydrogen generated by the decomposition is introduced into a thermal decomposition gas combustion chamber, and air is supplied to the thermal decomposition gas combustion chamber to burn the above hydrogen in the thermal decomposition gas combustion chamber.

[0004] However, in the device shown in Patent Document 1, an ammonia decomposition chamber for thermally decomposing a treatment target gas containing ammonia by an electric heater is required, and there are problems such as an increase in the size of the device, an increase in equipment costs, and an increase in operating costs.

[0005] In addition, in Patent Document 2, a regenerative combustion deodorization device is shown, including: a combustion chamber having a burner; three or more regenerative chambers each including a regenerative body and communicating with the combustion chamber; a supply flow path including a fan and supplying raw gas to the combustion chamber through any one of the regenerative chambers; an exhaust flow path exhausting the treated gas from the combustion chamber through any one of the regenerative chambers; a purge flow path extracting the treated gas from the combustion chamber through any one of the regenerative chambers and circulating it to the upstream of the fan in the supply flow path; and an adjustment damper disposed upstream of the confluence point of the supply flow path and the purge flow path or in the exhaust flow path. The regenerative combustion deodorization device controls the opening degree of the adjustment damper to adjust the flow path resistance of the upstream side of the confluence point of the supply flow path and the purge flow path or the exhaust flow path, so as to make the gas flow rate in the purge flow path constant.

[0006] However, in the device shown in Patent Document 2, there are also problems such as the overall size of the device being very large, the equipment cost being very high, and the operating cost increasing.

[0007] In addition, Patent Document 3 shows a heat storage deodorizing device, comprising: a heating chamber, which heats and deodorizes the gas to be deodorized by a burner; and a plurality of heat storage parts, which are arranged transversely to the heating chamber on the side of the heating chamber to form a flow path for the gas to flow in the heating chamber, and contain heat storage materials for heat exchange when the gas passes through.

[0008] However, the device disclosed in Patent Document 3 also has the problem that the entire device becomes long in the horizontal direction, requires a long space in the horizontal direction, and the equipment cost becomes high. Prior art literature Patent Literature

[0009] Patent Document 1: WO2012 / 120773 Patent Document 2: Japanese Patent No. 5468359 Patent Document 3: Japanese Patent No. 5878587 Summary of the invention

[0010] The technical problem of the present invention is to solve the above-mentioned problems in an apparatus for decomposing and treating odorous gas containing ammonia and the like.

[0011] That is, the technical problem of the present invention is to decompose and treat an odorous gas containing ammonia or the like efficiently without increasing the size of the device.

[0012] In order to solve the technical problems mentioned above, the odor gas treatment device of the present invention includes: a combustion chamber, which heats and decomposes the odor gas through combustion achieved by a burner; a heat storage chamber, which is arranged below the combustion chamber, so that the heat of the first decomposition gas after heating and decomposition in the combustion chamber is stored in the heat storage material, and the odor gas remaining in the first decomposition gas is heated and decomposed by the heat stored in the heat storage material; and an exhaust part, which discharges the second decomposition gas after the odor gas is heated and decomposed in the heat storage chamber.

[0013] Furthermore, as in the odorous gas treatment device of the present invention, if the odorous gas is heated and decomposed by combustion by a burner in the combustion chamber, and the first decomposed gas of the odorous gas after combustion in the combustion chamber is introduced into a heat storage chamber provided below the combustion chamber, and the heat in the first decomposed gas of the odorous gas is stored in the heat storage material in the heat storage chamber, and the odorous gas remaining in the first decomposed gas is decomposed by the heat stored in the heat storage material, then the decomposition of the odorous gas can be completed in a short time, and the combustion chamber can be shortened (the height can be reduced), so that the odorous gas can be efficiently decomposed and treated without enlarging the device as in the past. In particular, since the height of the combustion chamber can be reduced, it can also be installed in a factory building with a low ceiling.

[0014] Here, the type of odor gas that is decomposed and treated by the odor treatment device of the present invention is not particularly limited, but it can be used to treat odor gas containing ammonia.

[0015] In addition, in the odor gas treatment device of the present invention, a control device is provided for controlling the flow rates of fuel and combustion air supplied to the burner arranged in the above-mentioned combustion chamber, and a temperature detection device is provided for detecting the temperature of the above-mentioned second decomposition gas discharged from the above-mentioned exhaust portion. Based on the temperature of the above-mentioned second decomposition gas detected by the above-mentioned temperature detection device, the above-mentioned control device can control the respective flow rates of fuel and combustion air supplied to the burner.

[0016] Moreover, when the temperature of the second decomposition gas discharged from the exhaust portion detected by the temperature detection device is low, the flow rate of fuel and air supplied to the burner is increased by the control device. On the other hand, when the temperature of the second decomposition gas discharged from the exhaust portion is high, the flow rate of fuel and air supplied to the burner is reduced by the control device.

[0017] Furthermore, when the temperature of the second decomposition gas discharged from the exhaust section is low, if the flow rates of fuel and air supplied to the burner are increased, the temperature of the odor burned and decomposed in the combustion chamber becomes high, the decomposition of the odor is promoted, and the temperature of the first decomposition gas introduced into the heat storage chamber becomes high, the amount of heat stored in the heat storage material in the heat storage chamber becomes more, and the odor gas remaining in the first decomposition gas is more efficiently decomposed by the heat stored in the heat storage material. On the other hand, when the temperature of the second decomposition gas discharged from the exhaust section is high, even if the flow rates of fuel and air supplied to the burner are reduced, the odor gas can be properly burned and decomposed in the combustion chamber because the temperature of the heat storage material in the combustion chamber and the heat storage chamber is high, and the odor gas remaining in the first decomposition gas can be decomposed by the heat stored in the heat storage material, and it is not necessary to use more fuel than necessary. On the other hand, the temperature of the second decomposition gas discharged from the exhaust section is reduced, and the cooling device for cooling the second decomposition gas can be protected. In addition, when the concentration of the odor gas in the combustion chamber is too high, the supply of fuel can be stopped.

[0018] Here, when using an odor gas containing ammonia as the odor gas, the hydrogen contained in the odor gas remaining in the first decomposition gas is burned and consumed by the heat stored in the heat storage material, and the heat generated by the combustion is stored in the heat storage material, so that the above-mentioned second decomposition gas can be safely discharged, and the hydrogen contained in the odor gas can be effectively utilized.

[0019] In addition, in the odor treatment device of the present invention, the heat storage chamber is disposed horizontally from below the combustion chamber, and the exhaust section is disposed at a position of the heat storage chamber away from the combustion chamber, and a suppression section for suppressing the first decomposition gas of the odor gas after combustion in the combustion chamber from flowing into the heat storage chamber is disposed at a boundary portion between the combustion chamber and the heat storage chamber near the exhaust section, and the first decomposition gas can be introduced into the heat storage chamber from a position away from the exhaust section. In this way, the first decomposition gas of the odor gas heated and decomposed by combustion in the combustion chamber can be suppressed from flowing into the heat storage chamber from a boundary portion between the combustion chamber and the heat storage chamber near the exhaust section, and is introduced into the heat storage chamber and the exhaust section from a position away from the exhaust section by the suppression section disposed at the boundary portion, so that the heat in the first decomposition gas of the odor gas is efficiently stored in the entire heat storage material in the heat storage chamber, and the odor gas remaining in the first decomposition gas is more efficiently decomposed by the heat stored in the heat storage material in the heat storage chamber.

[0020] In the odor gas treatment device of the present invention, as described above, the odor gas is heated and decomposed by the burner in the combustion chamber, and the first decomposition gas of the odor gas heated and decomposed in the combustion chamber is guided to the heat storage chamber arranged below the combustion chamber, so that the heat in the above-mentioned first decomposition gas is stored in the heat storage material in the heat storage chamber, and the odor gas remaining in the above-mentioned first decomposition gas is decomposed by the heat stored in the heat storage material, and the second decomposition gas after the odor gas is decomposed is discharged from the exhaust part.

[0021] As a result, in the odor treatment device of the present invention, it is possible to efficiently decompose and treat odor gas without increasing the size of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional explanatory diagram showing a state in which, in the odorous gas treatment device according to the embodiment of the present invention, fuel gas and combustion air are supplied to each burner provided in a combustion chamber and burned, and odorous gas is burned and thermally decomposed. Figure 2 This is a schematic diagram showing a state in which, in the odor gas treatment device of the above embodiment, when the temperature of the second decomposed gas discharged through the exhaust section is too high, only combustion air is supplied to each burner provided in the combustion chamber to burn and heat-decompose the odor gas. Figure 3 This is a schematic cross-sectional view showing a state in which, in the odorous gas treatment device of the above embodiment, fuel gas and combustion air are injected from each burner in a tangential direction to the inner circumference of a combustion chamber to cause odorous gas to swirl and burn in the combustion chamber. Figure 4 The present invention is a cross-sectional illustration of a modified example in which, in the odor gas treatment device of the above-mentioned embodiment, a semicircular suppression plate is provided at a boundary portion between a combustion chamber and a heat storage chamber near an exhaust section to serve as a suppression section for suppressing the first decomposition gas of the odor gas burned in the combustion chamber from flowing into the heat storage chamber, and a plurality of inclined plates inclined upward are provided between the heat storage chamber and the exhaust section. Figure 5 This is a cross-sectional explanatory view showing a state in which a semicircular suppression plate is provided at a boundary portion between a combustion chamber and a heat storage chamber near an exhaust part in a modified example of the odor gas treatment device of the above embodiment, as viewed from above. Figure 6 This is a cross-sectional explanatory view showing a first modified example of a suppression plate provided at a boundary portion between a combustion chamber and a heat storage chamber near an exhaust portion in a modified example of the odor treatment device of the above embodiment, as viewed from above. Figure 7This is a cross-sectional explanatory view showing a second modified example of the suppression plate provided at the boundary portion between the combustion chamber and the heat storage chamber near the exhaust part in the modified example of the odor treatment device of the above embodiment, as viewed from above. Figure 8 This is a cross-sectional explanatory diagram showing another modified example in which a suppression portion for suppressing the first decomposition gas of the odorous gas burned in the combustion chamber from flowing into the heat storage chamber is provided at a boundary portion between the combustion chamber and the heat storage chamber near the exhaust section in the odorous gas treatment device of the above-mentioned embodiment. Explanation of symbols 10: Combustion chamber; 11: import part; 12: Burner; 13: fuel supply pipe; 13a: Flow control valve 14: Air supply pipe; 14a: Flow control valve 20: heat storage chamber; 21: Thermal storage material; 22: Exhaust part; 23: Grille; 24: inclined plate; 30: control device; 31: temperature detection device; 40: Inhibition Department; 41: inhibition plate; 42: Inhibition plate; 43: Inhibition plate; 44: Suppression member; 44a: upper surface; 50: connecting part; 51: guide part; Ai r: combustion air; Ga: fuel gas; Gn: odorous gas; Gn1: first decomposition gas; Gn2: Second decomposition gas. DETAILED DESCRIPTION

[0023] Hereinafter, an odorous gas treatment device according to an embodiment of the present invention will be described in detail based on the drawings. In addition, the odorous gas treatment device of the present invention is not limited to the device shown in the following embodiment, and can be implemented with appropriate changes within the scope of the invention.

[0024] In the odor gas treatment device of the embodiment, if Figure 1 and Figure 2As shown, an odor gas Gn containing ammonia NH3 is introduced into the combustion chamber 10 from an inlet portion 11 provided at an upper portion of the combustion chamber 10, and the odor gas Gn is burned by each burner 12 provided at the combustion chamber 10, so that ammonia NH3 contained in the odor gas Gn is burned and thermally decomposed into hydrogen H2 and nitrogen N2, and a first decomposition gas Gn1 of the odor gas Gn after the combustion is introduced into a heat storage chamber 20 laterally provided at a lower portion of the combustion chamber 10, so that the heat of the first decomposition gas Gn1 is thermally stored in a thermal storage material 21 accommodated in the thermal storage chamber 20, and the odor gas Gn remaining in the first decomposition gas Gn1 is thermally decomposed by the heat stored in the thermal storage material 21, so that a second decomposition gas Gn2 after the odor gas Gn remaining in the first decomposition gas Gn1 is decomposed in the thermal storage chamber 20 is discharged through an exhaust portion 22 provided laterally. In this way, compared with the conventional method of providing a heat storage chamber in the vertical direction and providing an exhaust section below the heat storage chamber, the height of the entire odor gas treatment device can be reduced, and it can also be installed in a factory building with a low ceiling.

[0025] Moreover, in the odor gas treatment device of the embodiment, as described above, the temperature of the second decomposed gas Gn2 discharged through the exhaust part 22 is detected by the temperature detection device 31, and the control device 30 outputs the temperature of the second decomposed gas Gn2 detected by the temperature detection device 31.

[0026] In the present embodiment, in order to prevent the heat storage material 21 stored in the heat storage chamber 20 from overflowing into the exhaust portion 22 , a grid 23 is provided between the heat storage chamber 20 and the exhaust portion 22 .

[0027] Here, in the odor gas treatment device of the present embodiment, when the odor gas Gn is burned and heated to decompose by each burner 12 arranged in the above-mentioned combustion chamber 10, a flow regulating valve 13a is set in each fuel supply pipe 13 for supplying fuel gas Ga to each burner 12, and a flow regulating valve 14a is set in each air supply pipe 14 for supplying combustion air Ai r to each burner 12.

[0028] Then, as described above, the temperature of the second decomposition gas Gn2 discharged from the heat storage chamber 20 through the exhaust portion 22 is detected by the temperature detection device 31, and based on the temperature of the second decomposition gas Gn2 detected by the temperature detection device 31, the flow control valve 13a provided in each fuel supply pipe 13 is adjusted by the above-mentioned control device 30, thereby adjusting the amount of fuel gas Ga supplied to each burner 12, and the flow control valve 14a provided in each of the above-mentioned air supply pipes 14 is adjusted, thereby adjusting the combustion air Ai r supplied to each burner 12.

[0029] Here, if the temperature of the second decomposition gas Gn2 detected by the temperature detection device 31 does not reach a predetermined temperature, for example, 800° C. at which the second decomposition gas Gn2 is difficult to be decomposed by heating, Figure 1 As shown, the flow regulating valve 13a provided in each fuel supply pipe 13 is adjusted by the control device 30, thereby adjusting the amount of fuel gas Ga supplied to each burner 12, and the flow regulating valve 14a provided in each air supply pipe 14 is adjusted, thereby adjusting the combustion air Ai r supplied to each burner 12. In each burner 12, the fuel gas Ga and the combustion air Ai r are mixed and burned, and as described above, the odor gas Gn containing ammonia NH3 introduced into the combustion chamber 10 from the inlet portion 11 is heated in the combustion chamber 10, thereby decomposing the ammonia NH3 contained in the odor gas Gn into hydrogen H2 and nitrogen N2.

[0030] Then, the first decomposition gas Gn1 of the odorous gas Gn after combustion is introduced into the above-mentioned heat storage chamber 20, so that the heat of the above-mentioned first decomposition gas Gn1 is stored in the heat storage material 21 accommodated in the heat storage chamber 20, and the odorous gas Gn remaining in the first decomposition gas Gn1 is heated and decomposed by the heat stored in the heat storage material 21.

[0031] On the other hand, when the temperature of the second decomposition gas Gn2 detected by the temperature detection device 31 reaches a predetermined temperature of 800°C or above, and the temperature in the combustion chamber 10 reaches a temperature capable of heating and decomposing the odor gas Gn containing ammonia NH3, the control device 30 is used to control the temperature in the combustion chamber 10 by reducing the flow rates of the fuel gas Ga and the combustion air Ai r supplied to the burner 12 and maintaining the flow rate.

[0032] In addition, when the temperature in the combustion chamber 10 is too high, Figure 2 As shown, the flow control valve 13a provided in each fuel supply pipe 13 is closed by the control device 30, and the fuel gas Ga is not supplied to each burner 12, thereby suppressing the temperature rise in the combustion chamber 10. Therefore, only the combustion air Ai r is supplied from the air supply pipe 14 to each burner 12, so that the odor gas Gn containing ammonia NH3 introduced into the combustion chamber 10 from the introduction part 11 is burned and heated and decomposed in the combustion chamber 10. In addition, the flow control valve 13a and the flow control valve 14a are indicated as open with white hollow, and are indicated as closed with black solid.

[0033] Furthermore, if the first decomposed gas Gn1 of the odorous gas Gn which is burned and heated and decomposed in this way is introduced into the regenerator 20, the odorous gas Gn remaining in the first decomposed gas Gn1 is sufficiently heated and decomposed by the heat stored in the heat storage material 21 which is stored in the regenerator 20 and becomes high temperature. In addition, in order to detect whether the temperature in the combustion chamber 10 has reached the combustion temperature of the odorous gas Gn containing ammonia NH3, a combustion chamber temperature sensor (not shown) for detecting the temperature in the combustion chamber 10 may be provided.

[0034] In this way, the amount of fuel gas Ga supplied to each burner 12 can be reduced and the fuel cost can be reduced, and the temperature of the second decomposition gas Gn2 discharged through the exhaust part 22 can be prevented from reaching a high temperature higher than required, and the cooling device (not shown) that cools the second decomposition gas Gn2 discharged through the exhaust part 22 can be protected.

[0035] In addition, as described above, when the odor gas Gn containing ammonia NH3 is used as the odor gas Gn, the hydrogen H2 contained in the odor gas Gn remaining in the first decomposition gas Gn1 is burned and consumed by the heat stored in the heat storage material 21, and the heat generated by the combustion is stored in the heat storage material 21, so that the above-mentioned second decomposition gas Gn2 can be safely discharged, and the hydrogen H2 contained in the odor gas Gn can be effectively utilized.

[0036] In addition, in the odor gas treatment device of the present embodiment, as described above, when the odor gas Gn is burned by each burner 12 provided in the combustion chamber 10, it is preferable that Figure 3 As shown, the combustion chamber 10 is formed into a cylindrical shape, and the fuel gas Ga and the combustion air Ai r are injected from each burner 12 in the tangential direction of the inner circumference of the combustion chamber 10, so that the odor gas Gn introduced into the combustion chamber 10 from the introduction part 11 swirls and burns in the combustion chamber 10. In this way, the odor gas Gn introduced into the combustion chamber 10 is burned while being fully stirred in the combustion chamber 10, and the odor gas Gn is quickly burned and decomposed, so that the height of the combustion chamber 10 can be reduced.

[0037] In addition, in the odor gas treatment device of this embodiment, if Figure 4 and Figure 5As shown, in order to suppress the first decomposition gas Gn1 of the odor gas Gn after combustion in the combustion chamber 10 from flowing into the heat storage chamber 20 from the combustion chamber 10 at a position close to the above-mentioned exhaust portion 22 and being immediately guided to the exhaust portion 22 for discharge, at a boundary portion between the combustion chamber 10 and the heat storage chamber 20 close to the above-mentioned exhaust portion 22, a suppression portion 40 for suppressing the introduction of the above-mentioned first decomposition gas Gn1 into the heat storage chamber 20 is provided, and a semicircular suppression plate 41 is provided to protrude toward the center portion, so that the above-mentioned first decomposition gas Gn1 can be introduced into the heat storage chamber 20 through a connecting portion 50 separated from the exhaust portion 22 where the suppression plate 41 is not provided.

[0038] In this way, the first decomposition gas Gn1 is introduced into the heat storage chamber 20 from a position away from the exhaust portion 22 through the connecting portion 50 and then introduced into the exhaust portion 22. The heat of the first decomposition gas Gn1 is efficiently stored in the entire heat storage material 21 of the heat storage chamber 20, and the odor gas Gn remaining in the first decomposition gas Gn1 is more efficiently decomposed by the heat stored in the heat storage material 21 of the heat storage chamber 20.

[0039] In addition, Figure 4 In the odorous gas treatment device shown, in order to prevent the heat storage material 21 accommodated in the heat storage chamber 20 from overflowing to the exhaust part 22, instead of the above-mentioned grille 23, a plurality of inclined plates 24 inclined upward relative to the exhaust direction are arranged at required intervals in the upper and lower parts.

[0040] In addition, in the odor gas treatment device of the present embodiment, in order to suppress the first decomposition gas Gn1 of the odor gas Gn after combustion in the combustion chamber 10 from flowing into the regenerator 20 from the combustion chamber 10 at a position close to the exhaust portion 22 and immediately guiding it to the exhaust portion 22, when the suppression portion 40 is provided at the boundary portion between the combustion chamber 10 and the regenerator 20 close to the exhaust portion 22, for example, Figure 6 As shown, the inhibitor plates 42 are arranged on both sides in an arc shape in a direction away from the exhaust part 22 in a manner larger than the semicircular shape, and the first decomposition gas Gn1 is introduced into the regenerator 20 from a position away from the exhaust part 22 through the connecting portion 50, or as shown in FIG. Figure 7 As shown, a plurality of circular communication portions 50 of different sizes are provided on a disc-shaped suppression plate 43 that closes the boundary portion between the combustion chamber 10 and the regenerator 20 , and the diameter of the circular communication portion 50 increases as it is farther from the exhaust port 22 .

[0041] Moreover, even in the Figure 6 and Figure 7In the case shown, as described above, the first decomposition gas Gn1 of the odorous gas Gn is also introduced into the heat storage chamber 20 from a position away from the exhaust portion 22 through the above-mentioned connecting portion 50 and introduced into the exhaust portion 22, and the heat of the above-mentioned first decomposition gas Gn1 is efficiently stored in the entire heat storage material 21 of the heat storage chamber 20, and the odorous gas Gn remaining in the first decomposition gas Gn1 is more efficiently decomposed by the heat stored in the heat storage material 21 of the heat storage chamber 20.

[0042] In addition, in the odor gas treatment device of the present embodiment, as described above, when the first decomposition gas Gn1 is suppressed by the suppression unit 40 from flowing from the combustion chamber 10 into the regenerator 20 at a position close to the exhaust unit 22 and is immediately introduced into the exhaust unit 22, Figure 8 As shown, a suppression member 44 is provided at a boundary portion between the combustion chamber 10 and the heat storage chamber 20 near the exhaust portion 22, and protrudes toward the center portion from the combustion chamber 10 toward the heat storage chamber 20 side and with the upper surface 44a inclined downward, and the first decomposition gas Gn1 of the odorous gas Gn is introduced into the connecting portion 50 and then into the heat storage chamber 20 along the upper surface 44a of the suppression member 44.

[0043] In addition, if Figure 8 As shown, in the regenerator 20, an inclined guide portion 51 may be provided at a lower corner away from the exhaust portion 22 to reduce flow resistance at the curved portion. As described above, the first decomposed gas Gn1 introduced into the regenerator 20 from the connecting portion 50 away from the exhaust portion 22 is guided by the guide portion 51, passes through the heat storage material 21 accommodated in the regenerator 20, and is guided to the exhaust portion 22.

Claims

1. A device for treating odorous gas, characterized in that: include: A combustion chamber, wherein the combustion chamber heats and decomposes the odor gas through combustion achieved by a burner; a heat storage chamber, wherein the heat of the first decomposition gas after being heated and decomposed in the combustion chamber is stored in a heat storage material, and the odor gas remaining in the first decomposition gas is heated and decomposed by the heat stored in the heat storage material; and an exhaust portion, wherein the exhaust portion discharges the second decomposition gas after the odor gas is heated and decomposed in the heat storage chamber.

2. The odorous gas treatment device according to claim 1, characterized in that: The odorous gas is an odorous gas containing ammonia.

3. The odorous gas treatment device according to claim 1, characterized in that: A control device is provided for controlling the flow rates of fuel and combustion air supplied to a burner disposed in the combustion chamber, and a temperature detection device is provided for detecting the temperature of the second decomposition gas discharged from the exhaust portion. Based on the temperature of the second decomposition gas detected by the temperature detection device, the control device controls the respective flow rates of fuel and combustion air supplied to the burner.

4. The odor gas treatment device according to claim 3, characterized in that: When the temperature of the second decomposition gas discharged from the exhaust portion detected by the temperature detection device is low, the flow rate of fuel and air supplied to the burner is increased by the control device. On the other hand, when the temperature of the second decomposition gas discharged from the exhaust portion is high, the flow rate of fuel and air supplied to the burner is reduced by the control device.

5. The odorous gas treatment device according to any one of claims 1 to 4, characterized in that: The regenerator is disposed transversely from below the combustion chamber, and the exhaust portion is disposed at a position of the regenerator away from the combustion chamber, and a suppression portion for suppressing the first decomposition gas that is heated and decomposed in the combustion chamber from flowing into the regenerator is disposed at a boundary portion between the combustion chamber and the regenerator near the exhaust portion, and the first decomposition gas is introduced into the regenerator from a position away from the exhaust portion.

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