Environment-friendly carbonization and volatilization furnace

Abstract

The utility model relates to environmental protection carbonization volatile furnace, including furnace body, furnace door, waste gas treatment device and exhaust device, and waste gas treatment device includes outer shell, upper and lower double -deck processing box, and the one end lower part of lower processing box is equipped with waste gas entrance, and the inside of lower processing box still is equipped with baffle and shunt plate at intervals, and the other end of lower processing box is equipped with air inlet hole, and the side of air inlet hole in lower processing box still is equipped with gas mixing hole, and multiple gas mixing holes will lower processing box inside and air inlet hole intercommunication, and the inside of upper processing box is equipped with catalytic reaction box, and one end of catalytic reaction box is equipped with reaction box gas inlet channel, and reaction box gas inlet channel is connected with gas mixing hole, the utility model discloses volatile furnace compact whole structure, and gas flow path is short, and has reduced resistance loss, and waste gas treatment device simultaneously is equipped with lower layer processing box and upper layer processing box, and respectively carries out gas mixing cooling, catalytic action, realizes the efficient catalytic decomposition of gas.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial heat treatment equipment, specifically to an environmentally friendly carbonization and volatilization furnace for treating waste gas containing volatile organic compounds, which is particularly suitable for high-efficiency and low-emission heat treatment processes in industries such as chemical, coating, and electronics. Background Technology

[0002] A volatilization furnace is a type of high-temperature box furnace, commonly used in universities, research institutes, and industrial and mining enterprises for high-temperature sintering, metal annealing, and quality testing; as well as for baking and pre-sintering of zirconia discs in the powder metallurgy and dental prosthesis industries. Traditional volatilization furnaces face the following technical bottlenecks in high-temperature processing:

[0003] 1. Poor system integration: The exhaust gas treatment unit and the furnace body are usually designed separately, which takes up a lot of space and has significant heat loss in the pipeline; while existing integrated equipment lacks a staged treatment mechanism, making it difficult to achieve physical mixing and deep catalysis at the same time.

[0004] 2. Low waste gas treatment efficiency: Conventional single-stage treatment devices (such as direct catalytic combustion or adsorption towers) are insufficient in purifying complex waste gases, especially for high-concentration waste gases that are not fully premixed, which can easily create local reaction dead zones, leading to the escape of harmful substances (such as benzene compounds and aldehydes).

[0005] 3. High energy consumption and operating costs: In order to meet the catalytic reaction temperature, a large amount of energy needs to be consumed to preheat the exhaust gas; at the same time, the static mixing structure (such as a single baffle) leads to uneven airflow distribution, requiring increased fan power to maintain pressure drop, further increasing energy consumption. Utility Model Content

[0006] To address the aforementioned technical problems, the purpose of this utility model is to provide an environmentally friendly carbonization volatilization furnace, which has a waste gas treatment function and high efficiency.

[0007] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0008] An environmentally friendly carbonization and volatilization furnace includes a furnace body, a furnace door, a waste gas treatment device, and an exhaust device. The furnace door is hinged to the furnace body, and a locking mechanism is provided between the furnace door and the furnace body. The waste gas treatment device is located at the top of the furnace body and includes an outer shell and upper and lower double-layer treatment chambers housed within the outer shell. One end of the lower treatment chamber has a waste gas inlet, which communicates with the waste gas outlet at the top of the furnace body. The lower treatment chamber is also equipped with baffles and diverter plates at intervals. The other end of the lower treatment chamber has an air inlet. Furthermore, the air inlet is connected to the outside through an air inlet pipe. A gas mixing hole is also provided on the side of the lower treatment box near the air inlet. Multiple gas mixing holes connect the interior of the lower treatment box with the air inlet. A catalytic reaction box is provided in the upper treatment box. Multiple rows of catalytic reaction plates are arranged at intervals in the catalytic reaction box. One end of the catalytic reaction box is provided with a reaction box air inlet channel, which is connected to the gas mixing hole. The exhaust device is located above the waste gas treatment device and is connected to the other end of the catalytic reaction box.

[0009] As a preferred embodiment, the lower processing chamber is provided with insulation plates A at the bottom and inside the side walls, and multiple gas mixing holes are opened on the insulation plate A at one end of the lower processing chamber. An upper end plate is also provided between the insulation plates A around the chamber, and a through hole matching the gas inlet channel of the reaction chamber is provided on one side of the upper end plate.

[0010] As a preferred embodiment, both the baffle and the diverter are fixed on the bottom insulation plate A, with the baffle close to the exhaust gas inlet and the length of the baffle greater than the length of the diverter.

[0011] As a preferred embodiment, the flow divider is located at one end near the air inlet, and there are two flow dividers, which are spaced apart along the width direction.

[0012] As a preferred embodiment, the furnace body includes an outer frame, metal side plates, an inner insulation plate, and a heating cavity. The heating cavity is fixed in the outer frame and is enclosed by an insulation plate B with an opening at the front end. A heating pipe is embedded in the insulation plate B. An air vent is also provided on the rear wall of the heating cavity, which is connected to the exhaust gas outlet at the top of the furnace body. The metal side plates are fixed to the outer frame, and the metal side plates located at the front end of the heating cavity are also provided with an opening that matches the heating cavity. The inner insulation plate is disposed between the metal side plates and the heating cavity.

[0013] As a preferred embodiment, the top of the furnace body is also provided with a waste gas rotary channel, and a top heating plate is fixed to the top of the waste gas rotary channel. The waste gas outlet is located on the top heating plate. The waste gas rotary channel consists of three channels arranged side by side. One end of the middle channel is connected to the waste gas outlet, and the other end of the middle channel is connected to the two side channels respectively. The rear side of the heating chamber is also provided with a back plate. The back plate has a longitudinal connecting channel. One end of the two side channels is connected to the air outlet through the longitudinal connecting channel. A T-shaped transverse connecting channel is also provided between the two longitudinal connecting channels, and the lower end of the transverse connecting channel has a vent hole that communicates with the outside.

[0014] As a preferred embodiment, the locking mechanism includes a locking pin fixed to the furnace body and a door lock fixed to the furnace door. The door lock includes a door lock wrench, a door lock hook, and a door lock mounting plate. The door lock mounting plate is fixed to the side of the furnace door. The door lock wrench is hinged to the door lock mounting plate. The door lock hook is hinged to the door lock wrench and is fastened to the locking pin, so that the door lock hook and the door lock wrench are set perpendicularly.

[0015] As a preferred embodiment, the door lock mounting plate is further provided with a guide groove, and the door lock hook is provided with a guide post, which is embedded in the guide groove.

[0016] As a preferred embodiment, the furnace door includes a door body metal frame and a door body insulation plate disposed within the door body metal frame, the shape of which matches the opening shape of the heating chamber.

[0017] As a preferred embodiment, the outer shell includes a base plate and an outer metal shell that are fixed to each other, and both the top of the base plate and the outer metal shell are provided with gas passage holes.

[0018] The volatile matter furnace of this invention directly fixes the waste gas treatment device and the exhaust device to the top of the furnace body. The overall structure is compact, the gas flow path is short, and the resistance loss is reduced. At the same time, the waste gas treatment device is equipped with a lower treatment box and an upper treatment box, which respectively mix and cool the gas and catalyze it to achieve efficient catalytic decomposition of the gas. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0020] Figure 1 and Figure 2 These are schematic diagrams of the overall structure of this utility model from two different angles;

[0021] Figure 3 This is a schematic diagram of the top structure of the furnace body of this utility model;

[0022] Figure 4 This is a schematic diagram of the front structure of the furnace body of this utility model (furnace door not shown).

[0023] Figure 5 This is a partial exploded structural diagram of the furnace body of this utility model;

[0024] Figure 6 This is a partial exploded structural diagram of the heating chamber and inner insulation board of this utility model;

[0025] Figure 7 and Figure 8 These are two exploded structural diagrams of the exhaust device and waste gas treatment device of this utility model from two different angles.

[0026] Figure 9 This is a schematic diagram of the structure of the furnace door of this utility model;

[0027] Figure 10 and Figure 11 This is a structural schematic diagram of the door lock of this utility model.

[0028] The attached figures are labeled as follows: 1. Furnace body; 11. Metal side plate; 12. Inner insulation plate; 13. Insulation plate B; 14. Exhaust vent; 15. Longitudinal connecting channel; 16. Waste gas recirculation channel; 17. Top heating plate; 171. Waste gas outlet; 18. Back plate; 181. Transverse connecting channel; 182. Vent hole; 2. Furnace door; 21. Door metal frame; 22. Door insulation plate; 23. Door lock wrench; 231. Hinge column A; 232. Hinge hole A; 24. Door lock hook; 241. Guide column; 242. Hinge column B; 25. Door lock mounting plate; 251. Guide groove; 252. Hinge hole B; 26. First connecting piece; 27. Second connecting piece; 261. Waist-shaped hole; 3. Waste gas treatment device; 31 32. Bottom plate; 33. Lower housing; 34. Air inlet; 35. Exhaust gas inlet; 36. Baffle; 37. Diverter plate; 38. Gas mixing hole; 39. Air inlet pipe; 30. Upper end plate; 31. Upper housing; 32. Reactor air inlet channel; 31. Catalytic reaction chamber; 31. Catalytic reaction plate; 32. Outer metal shell; 33. Exhaust device; 4. Controller assembly; 5. Bottom electrical assembly; 6. Flow meter; 71. Vent pipe. Detailed Implementation

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Furthermore, in the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0036] like Figures 1 to 8 As shown, the environmentally friendly carbonization volatilization furnace includes a furnace body 1, a furnace door 2, a waste gas treatment device 3, and an exhaust device 4. The furnace door 2 is hinged to the furnace body 1, and a locking mechanism is provided between the furnace door 2 and the furnace body 1. The waste gas treatment device 3 is located on the top of the furnace body 1. The waste gas treatment device 3 includes an outer shell and upper and lower double-layer treatment chambers disposed within the outer shell. One end of the lower treatment chamber 32 is provided with a waste gas inlet 33, which is connected to the waste gas outlet 171 at the top of the furnace body 1. The lower treatment chamber 32 is also provided with baffles 34 and diverter plates 35 at intervals. The other end of the lower treatment chamber 32 is provided with an air inlet 321, which is connected to the outside through an air inlet pipe 37. The air inlet pipe 37 is also equipped with an automatic regulating valve for adjusting the amount of external air entering; a gas mixing hole 36 is also provided on the side of the lower processing box 32 near the air inlet hole 321, and multiple gas mixing holes 36 connect the interior of the lower processing box 32 with the air inlet hole 321; a catalytic reaction box 310 is provided in the upper processing box 39, and multiple rows of catalytic reaction plates 311 are arranged at intervals in the catalytic reaction box 310. One end of the catalytic reaction box 310 is provided with a reaction box air inlet channel 391, which is connected to the gas mixing hole 36; the exhaust device 4 is located above the waste gas treatment device 3, and the exhaust device 4 is connected to the other end of the catalytic reaction box 310.

[0037] The above structure achieves overall integration and efficient processing: the waste gas treatment device is directly integrated into the top of the furnace body, reducing the equipment footprint and realizing "source treatment" of waste gas, avoiding leakage or secondary pollution during the transmission process, and improving environmental protection.

[0038] The aforementioned structure employs a dual-layer treatment chamber design (lower pretreatment combined with upper catalytic reaction) to achieve efficient step-by-step treatment of exhaust gas. The lower treatment chamber increases airflow turbulence through baffles and diverter plates, extending the exhaust gas residence time and promoting initial mixing of air and exhaust gas. The upper catalytic reaction chamber utilizes catalytic reaction plates to catalytically oxidize the mixed gas (e.g., decompose VOCs), significantly reducing harmful substance emissions. Furthermore, air inlets and gas mixing holes allow for the metered introduction of external air, ensuring thorough mixing with the exhaust gas and lowering its temperature to meet the requirements of subsequent catalytic reactions.

[0039] In addition, the exhaust device in the above structure is located above the waste gas treatment device to ensure smooth discharge of the treated gas, prevent airflow blockage or backflow, and maintain system pressure balance. Furthermore, the environmental protection and safety performance of the entire device is improved: through catalytic reaction, waste gas is converted into harmless substances (such as CO2 and H2O), reducing the odor of the exhaust gas and reducing air pollution; at the same time, the furnace door locking mechanism prevents heat or waste gas leakage during operation, improving safety.

[0040] The lower processing chamber 32 has insulation plates A on its bottom and inner side walls. Multiple gas mixing holes 36 are formed on one end of the insulation plate A. An upper end plate 38 is also provided between the insulation plates A around the chamber, and one side of the upper end plate 38 has a through hole that matches the gas inlet channel 391 of the reaction chamber. The insulation plates A reduce heat loss, maintain a stable internal temperature in the lower processing chamber (especially suitable for mixing reactions requiring a certain temperature), and prevent reduced processing efficiency due to exhaust gas cooling (such as condensation or incomplete reaction), thereby improving energy efficiency. The gas mixing holes are directly formed on the insulation plates A, ensuring hole position accuracy and durability, preventing deformation or leakage. The upper end plate provides a seal at the top of the chamber and is seamlessly connected to the upper processing chamber through the through holes, ensuring a continuous airflow path and reducing gas escape. The insulated environment facilitates heat exchange between air and exhaust gas, promotes mixing uniformity, and creates better conditions for subsequent catalytic reactions.

[0041] Both the baffle 34 and the diverter 35 are fixed to the bottom insulation plate A. The baffle 34 is close to the exhaust gas inlet 33, and its length is greater than that of the diverter 35. The baffle's proximity to the exhaust gas inlet and its greater length effectively block and disperse the high-speed exhaust gas, slowing the airflow speed, increasing turbulence and residence time, resulting in a more uniform exhaust gas distribution and preventing "short-circuiting" (where some exhaust gas is discharged directly without treatment). The baffle and diverter are fixed to the insulation plate A, enhancing mechanical strength, preventing airflow impact from causing component vibration or displacement, and improving system reliability. The diverter assists in guiding the airflow, working in conjunction with the baffle to form a multi-stage buffer, further improving the mixing efficiency of air and exhaust gas.

[0042] The flow divider 35 is located near one end of the air inlet 321. Two flow dividers 35 are arranged spaced apart along their width. These two flow dividers create multiple parallel airflow channels, allowing air to be distributed more evenly after entering through the air inlet, avoiding uneven mixing in certain areas, ensuring sufficient oxygen contact with the exhaust gas, and improving pretreatment efficiency. The proximity of the flow dividers to the air inlet directly optimizes the air introduction path, reducing flow resistance and energy consumption.

[0043] The furnace body 1 includes an outer frame, metal side plates 11, an inner insulation plate 12, and a heating cavity. The heating cavity is fixed in the outer frame and is enclosed by an insulation plate B13 with an opening at the front end. A heating tube is embedded in the insulation plate B13. An air vent 14 is also provided on the rear wall of the heating cavity. The air vent 14 is connected to the exhaust gas outlet 171 at the top of the furnace body 1. The metal side plates 11 are fixed on the outer frame, and the metal side plates 11 located at the front end of the heating cavity are also provided with an opening that matches the heating cavity. The inner insulation plate 12 is disposed between the metal side plates and the heating cavity.

[0044] The dual insulation design of the inner insulation board and insulation board B significantly reduces heat loss from the furnace body, maintains a high-temperature environment (suitable for volatilization processes), improves heating efficiency, and reduces energy consumption. The heating tubes are embedded in insulation board B, providing a stable heat source, ensuring uniform temperature within the heating chamber, promoting complete material volatilization, and reducing residue. The vent is directly connected to the exhaust outlet, allowing exhaust gas to be quickly introduced into the treatment device, preventing accumulation inside the furnace and reducing the risk of explosion.

[0045] The top of the furnace body 1 is also provided with a waste gas recirculation channel 16, and a top heating plate 17 is fixed to the top of the waste gas recirculation channel 16. The waste gas outlet 171 is set on the top heating plate 17. The waste gas recirculation channel 16 consists of three channels arranged side by side. One end of the middle channel is connected to the waste gas outlet 171, and the other end of the middle channel is connected to the two side channels respectively. A back plate 18 is also provided on the rear side of the heating chamber. A longitudinal connecting channel 15 is opened on the back plate 18. One end of the two side channels is connected to the air outlet 14 through the longitudinal connecting channel 15. A T-shaped transverse connecting channel 181 is also opened between the two longitudinal connecting channels 15, and a vent 182 communicating with the outside is provided at the lower end of the transverse connecting channel 181.

[0046] The three-channel rotary design (connected to the middle and sides) increases the flow path of the exhaust gas, prolongs its residence time in the furnace, and allows for further pyrolysis of incompletely volatilized substances, reducing direct emissions of pollutants. The top heating plate further heats the exhaust gas, accelerating its pyrolysis. The longitudinal connecting channel not only connects the exhaust gas rotary channels to the furnace interior but also introduces external air into the exhaust gas rotary channels, accelerating the complete combustion and decomposition of the exhaust gas.

[0047] like Figures 9 to 11 As shown, the furnace door 2 includes a door body metal frame 21 and a door body insulation plate 22 disposed within the door body metal frame. The shape of the door body insulation plate 22 matches the opening shape of the heating chamber. The door body insulation plate is floatingly connected to the door body metal frame, and a sealing ring is also provided on the side of the door body insulation plate that contacts the furnace body. The door body insulation plate reduces heat loss from the furnace door, and its matching shape with the opening shape of the heating chamber ensures a tight fit, preventing heat leakage and exhaust gas escape.

[0048] The locking mechanism includes a locking pin fixed to the furnace body 1 and a door lock fixed to the furnace door 2. The door lock includes a door lock wrench 23, a door lock hook 24, and a door lock mounting plate 25. The door lock mounting plate 25 is fixed to the side of the furnace door 2. The door lock wrench 23 is hinged to the door lock mounting plate 25. The door lock hook 24 is hinged to the door lock wrench 23 and is fastened to the locking pin, so that the door lock hook 24 and the door lock wrench 23 are set perpendicularly.

[0049] The vertical locking design provides high mechanical locking force, ensuring that the furnace door and furnace body are tightly closed, preventing leakage of high-temperature exhaust gas or heat, and improving operational safety; the hinged door lock wrench simplifies the opening and closing process and reduces the need for manpower; the vertically set hooks provide a leverage effect, making it easy to lock and unlock; in addition, the metal parts (clamps, hooks) are resistant to high temperatures and corrosion, making them suitable for the volatilization furnace environment.

[0050] One end of the door lock hook 24 is provided with a hinge post B242, the door lock wrench 23 is provided with a hinge hole A232, the hinge post B242 is disposed in the hinge hole A232, the door lock wrench 23 is provided with a hinge post A231 on one side of the hinge hole A232, the door lock mounting plate 25 is provided with a hinge hole B252, and the hinge post A231 is disposed in the hinge hole B252.

[0051] The door lock mounting plate 25 is also provided with a guide groove 251, and the door lock hook 24 is provided with a guide post 241, which is embedded in the guide groove 251. The guide groove and guide post guide the hook to move linearly, preventing jamming or displacement and ensuring a smooth and reliable locking process; moreover, the mechanical guide reduces component friction and extends the life of the locking mechanism. In addition, under high temperature and vibration environments, the guide design maintains locking stability and avoids accidental loosening.

[0052] The furnace door is connected to the furnace body via a hinge, which includes a first connecting piece 26 and a second connecting piece 27. The first connecting piece 26 has an oblong hole 261, and the pivot on the second connecting piece 27 is disposed within the oblong hole 261. The oblong hole allows for a certain amount of displacement on the hinge side of the furnace door, which, together with the aforementioned locking mechanism, improves the sealing between the furnace door and the furnace body.

[0053] The outer shell includes a base plate 31 and an outer metal shell 312 that are fixed to each other. Both the top of the base plate 31 and the outer metal shell 312 are provided with gas passage holes.

[0054] A controller assembly 6 is also provided on one side of the furnace body 1, and a bottom electrical assembly 7 is also provided at the bottom of the furnace body 1. A flow meter 71 is also installed on one side of the bottom electrical assembly 7, and the inlet and outlet ends of the flow meter 71 are respectively connected to a vent pipe 72, and one of the vent pipes is connected to the interior of the furnace body.

[0055] This invention develops a highly integrated, hierarchical, and synergistic volatile matter furnace structure, which achieves efficient mixing of waste gas and air with low pressure loss within a limited space, thereby reducing the temperature of the waste gas; and realizes the coupling of physical pretreatment and deep catalytic reaction under gradient temperature control; enabling the recycling of thermal energy to reduce the total energy consumption of the system.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An environmentally friendly carbonization and volatilization furnace, characterized in that, It includes the furnace body (1), furnace door (2), waste gas treatment device (3) and exhaust device (4). The furnace door (2) is hinged to the furnace body (1), and a locking mechanism is provided between the furnace door (2) and the furnace body (1). The waste gas treatment device (3) is located on the top of the furnace body (1). The waste gas treatment device (3) includes an outer shell and upper and lower double-layer treatment boxes located inside the outer shell. The lower processing box (32) has a waste gas inlet (33) at one end, which is connected to the waste gas outlet (171) at the top of the furnace body (1). The lower processing box (32) is also provided with baffles (34) and diverter plates (35) at intervals. The other end of the lower processing box (32) is provided with an air inlet hole (321), which is connected to the outside through an air inlet pipe (37). The lower processing box (32) is also provided with a gas mixing hole (36) on the side near the air inlet hole (321). Multiple gas mixing holes (36) connect the interior of the lower processing box (32) with the air inlet hole (321). The upper processing box (39) is equipped with a catalytic reaction box (310), and multiple rows of catalytic reaction plates (311) are arranged at intervals in the catalytic reaction box (310). One end of the catalytic reaction box (310) is equipped with a reaction box gas inlet channel (391), which is connected to the gas mixing hole (36). The exhaust device (4) is located above the exhaust gas treatment device (3), and the exhaust device (4) is connected to the other end of the catalytic reaction box (310).

2. The environmentally friendly carbonization and volatilization furnace according to claim 1, characterized in that, The lower processing box (32) is provided with insulation plates A at the bottom and inside the side walls. Multiple gas mixing holes (36) are opened on the insulation plate A at one end of the lower processing box (32). An upper end plate (38) is also provided between the insulation plates A around the perimeter. A through hole matching the gas inlet channel (391) of the reaction box is provided on one side of the upper end plate (38).

3. The environmentally friendly carbonization and volatilization furnace according to claim 2, characterized in that, Both the baffle (34) and the diverter plate (35) are fixed on the bottom insulation plate A. The baffle (34) is close to the exhaust gas inlet (33), and the length of the baffle (34) is greater than the length of the diverter plate (35).

4. The environmentally friendly carbonization and volatilization furnace according to claim 1 or 3, characterized in that, The diverter plate (35) is located near the air inlet hole (321) at one end. There are two diverter plates (35), which are spaced apart along the width direction.

5. The environmentally friendly carbonization and volatilization furnace according to claim 1, characterized in that, The furnace body (1) includes an outer frame, a metal side plate (11), an inner insulation plate (12), and a heating chamber. The heating chamber is fixed in the outer frame and is enclosed by an insulation plate B (13) with an opening at the front end. A heating pipe is embedded in the insulation plate B (13). An air outlet (14) is also provided on the rear wall of the heating chamber. The air outlet (14) is connected to the exhaust gas outlet (171) at the top of the furnace body (1). The metal side plate (11) is fixed on the outer frame, and the metal side plate (11) at the front end of the heating chamber is also provided with an opening that matches the heating chamber. The inner insulation plate (12) is located between the metal side plate and the heating chamber.

6. The environmentally friendly carbonization and volatilization furnace according to claim 5, characterized in that, The top of the furnace body (1) is also provided with a waste gas rotary channel (16), and a top heating plate (17) is fixed on the top of the waste gas rotary channel (16). The waste gas outlet (171) is set on the top heating plate (17). The waste gas rotary channel (16) is a three-channel arrangement. One end of the middle channel is connected to the waste gas outlet (171), and the other end of the middle channel is connected to the two side channels respectively. The rear side of the heating chamber is also provided with a back plate (18). A longitudinal connecting channel (15) is opened on the back plate (18). One end of the two side channels is connected to the air outlet (14) through the longitudinal connecting channel (15). A T-shaped transverse connecting channel (181) is also opened between the two longitudinal connecting channels (15), and a vent (182) is provided at the lower end of the transverse connecting channel (181) to communicate with the outside.

7. The environmentally friendly carbonization and volatilization furnace according to claim 1, characterized in that, The locking mechanism includes a locking pin fixed to the furnace body (1) and a door lock fixed to the furnace door (2). The door lock includes a door lock wrench (23), a door lock hook (24), and a door lock mounting plate (25). The door lock mounting plate (25) is fixed to the side of the furnace door (2). The door lock wrench (23) is hinged to the door lock mounting plate (25). The door lock hook (24) is hinged to the door lock wrench (23). The door lock hook (24) is fastened to the locking pin, so that the door lock hook (24) and the door lock wrench (23) are set perpendicularly.

8. The environmentally friendly carbonization and volatilization furnace according to claim 7, characterized in that, The door lock mounting plate (25) is also provided with a guide groove (251), and the door lock hook (24) is provided with a guide post (241), which is embedded in the guide groove (251).

9. The environmentally friendly carbonization and volatilization furnace according to claim 1, characterized in that, The furnace door (2) includes a door metal frame (21) and a door insulation plate (22) disposed in the door metal frame. The shape of the door insulation plate (22) matches the shape of the opening of the heating chamber.

10. The environmentally friendly carbonization and volatilization furnace according to claim 1, characterized in that, The outer shell includes a base plate (31) and an outer metal shell (312) that are fixed to each other. Both the top of the base plate (31) and the outer metal shell (312) are provided with gas passage holes.

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