Moxibustion flue gas purification equipment and moxibustion flue gas purification method

Abstract

The invention provides moxibustion flue gas purification equipment and a moxibustion flue gas purification method. The moxibustion flue gas purification equipment comprises a first catalysis module, a second catalysis module and a third catalysis module, the first catalysis module is used for performing first catalysis treatment on the moxibustion flue gas to obtain first intermediate flue gas, and the catalysis temperature of the first catalysis treatment is 50-100 DEG C; the second catalysis module is used for performing second catalysis treatment on the first intermediate flue gas to obtain second intermediate flue gas, and the catalysis temperature of the second catalysis treatment is 120-450 DEG C; the third catalysis module is used for carrying out third catalysis treatment on the second middle flue gas to obtain clean moxibustion flue gas, and the catalysis temperature of the third catalysis treatment is 80-150 DEG C. According to the application, the moxibustion smoke is subjected to three-stage catalysis, and catalytic treatment is sequentially carried out at low temperature, high temperature and medium temperature, so that different pollutants in the moxibustion smoke can be effectively removed, the clean moxibustion smoke is obtained, the purification efficiency is improved, and pollution is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of moxibustion smoke treatment, and specifically relates to moxibustion smoke purification equipment and moxibustion smoke purification methods. Background Art

[0002] Moxibustion, a traditional Chinese medicine treatment, produces a large amount of smoke when burning moxa sticks. This smoke contains a variety of harmful substances, such as volatile organic compounds (VOCs), tar, and odor. However, existing technologies still have problems such as low purification efficiency, high energy consumption, and secondary pollution. Summary of the Invention

[0003] In view of this, the first aspect of the present application provides a moxibustion fume purification device, the moxibustion fume purification device comprising: a first catalytic module, configured to perform a first catalytic treatment on the moxibustion flue gas to obtain a first intermediate flue gas, wherein the catalytic temperature of the first catalytic treatment is 50° C. to 100° C.; a second catalytic module, connected to the first catalytic module, for performing a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120° C. to 450° C.; The third catalytic module is connected to the second catalytic module and is used to perform a third catalytic treatment on the second intermediate flue gas to obtain clean moxibustion flue gas. The catalytic temperature of the third catalytic treatment is 80°C~150°C.

[0004] The first catalytic module is provided with a MnO2-CeO2 catalyst; in the first catalytic treatment, the MnO2-CeO2 catalyst is used to treat the moxibustion flue gas to remove part of the VOCs and part of the tar in the moxibustion flue gas to obtain the first intermediate flue gas, wherein the part of the VOCs includes α-pinene and formaldehyde; The second catalytic module is provided with a Pt-Pd / Al2O3 catalyst; in the second catalytic treatment, the Pt-Pd / Al2O3 catalyst is used to treat the first intermediate flue gas to remove a portion of benzene series and another portion of tar in the first intermediate flue gas to obtain the second intermediate flue gas; The third catalytic module is provided with a CuO / ZSM-5 catalyst; in the third catalytic treatment, the CuO / ZSM-5 catalyst is used to treat the second intermediate flue gas to remove another part of the benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas to obtain the clean moxibustion flue gas.

[0005] Wherein, the moxibustion flue gas purification device includes a heat exchanger, and at least part of the first catalytic module and at least part of the third catalytic module are arranged in the heat exchanger; Wherein, in the heat exchanger, the second intermediate flue gas located in the third catalytic module is used to heat the moxibustion flue gas located in the first catalytic module.

[0006] The first catalytic module includes a first pipe for accommodating the moxibustion smoke and the first intermediate smoke, and the third catalytic module includes a third pipe for accommodating the second intermediate smoke and the clean moxibustion smoke. The heat exchanger includes a box body, and the first pipe and the third pipe are arranged in the box body; wherein, the first pipe and the third pipe are arranged adjacent to each other, or the first pipe is sleeved on the third pipe, or the third pipe is sleeved on the first pipe.

[0007] The housing includes a first base plate and a second base plate that are arranged opposite to each other, and the heat exchanger further includes a first air guide portion provided on the first base plate and a second air guide portion provided on the second base plate, the first air guide portion and the second air guide portion are arranged alternately, and the first base plate, the second base plate, the first air guide portion, and the second air guide portion surround and form at least a portion of the third pipe; In the heat exchanger, the first pipe is arranged in the third pipe, and at least a portion of the first pipe is bent and extended.

[0008] The smoke inlet end of the first pipe is provided with a heat-conducting fin, the first catalytic module is provided with a first catalyst, the first catalyst is loaded on the heat-conducting fin, and the specific surface area of ​​the first catalyst is ≥150 m 2 / g; The second catalytic module includes a second pipe connecting the first pipe and the third pipe, the second pipe is used to accommodate the first intermediate flue gas and the second intermediate flue gas, a honeycomb substrate is provided in the second pipe, the second catalytic module is provided with a second catalyst, and the second catalyst is supported on the honeycomb substrate, and the pore density of the honeycomb substrate is 350 cpsi to 450 cpsi; The third catalytic module is provided with a third catalyst, and the third catalyst is coated on the smoke outlet end of the third pipe.

[0009] Wherein, the moxibustion fume purification equipment further comprises: a heater, disposed on one side of the second catalytic module, for heating the first intermediate flue gas located in the second catalytic module; a radiator, provided on one side of the third catalytic module, for cooling the clean moxibustion smoke; An exhaust fan connects the third catalytic module with the outside world and is used to discharge the clean moxibustion smoke to the outside world.

[0010] Wherein, the moxibustion fume purification equipment further comprises: The housing has a receiving space, wherein the first catalytic module, the second catalytic module, the third catalytic module, the heater, the radiator, and the exhaust fan are all arranged in the receiving space; A smoke exhaust component is provided outside the housing, the smoke exhaust component includes a smoke pipe and a suction cup, the smoke pipe is connected to the exhaust fan and the suction cup, the clean moxibustion smoke flows through the smoke pipe and is discharged from the suction cup; An adjusting arm has one end fixed to the outside of the shell and the other end detachably connected to the suction cup, and the adjusting arm is used to drive the suction cup to move relative to the shell.

[0011] A second aspect of the present application provides a moxibustion fume purification method, the moxibustion fume purification method comprising: Performing a first catalytic treatment on the moxibustion flue gas to obtain a first intermediate flue gas, wherein the catalytic temperature of the first catalytic treatment is 50° C. to 100° C.; performing a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120° C. to 450° C.; The second intermediate flue gas is subjected to a third catalytic treatment to obtain clean moxibustion flue gas, and the catalytic temperature of the third catalytic treatment is 80° C. to 150° C.

[0012] wherein, in the first catalytic treatment, the moxibustion flue gas is treated with a MnO2-CeO2 catalyst to remove part of the VOCs and part of the tar in the moxibustion flue gas, thereby obtaining the first intermediate flue gas, wherein the part of the VOCs includes α-pinene and formaldehyde; In the second catalytic treatment, the first intermediate flue gas is treated with a Pt-Pd / Al2O3 catalyst to remove a portion of benzene series and another portion of tar in the first intermediate flue gas to obtain the second intermediate flue gas; In the third catalytic treatment, the second intermediate flue gas is treated with a CuO / ZSM-5 catalyst to remove another portion of benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas to obtain the clean moxibustion flue gas.

[0013] The moxibustion flue gas purification equipment and moxibustion flue gas purification method provided in the present application can effectively remove different pollutants in the moxibustion flue gas by performing three-stage catalysis on the moxibustion flue gas, and obtain clean moxibustion flue gas, thereby improving purification efficiency and reducing pollution; in addition, the present application also uses the second intermediate flue gas to preheat the newly-incoming moxibustion flue gas, reducing the energy consumption of the heater and realizing waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0015] Figure 1 This is a schematic structural diagram of a moxibustion fume purification device provided in one embodiment of the present application.

[0016] Figure 2 A schematic structural diagram of a heat exchanger provided in one embodiment of the present application.

[0017] Figure 3 This is a three-dimensional structural diagram of the moxibustion fume purification device provided in one embodiment of the present application.

[0018] Figure 4 This is a three-dimensional structural diagram of the moxibustion fume purification device provided in one embodiment of the present application from another perspective.

[0019] Figure 5 A schematic flow chart of a moxibustion fume purification method provided in one embodiment of the present application.

[0020] Explanation of reference numerals: Moxibustion flue gas purification equipment 1, first catalytic module 10, first pipeline 11, second catalytic module 20, third catalytic module 30, third pipeline 31, heat exchanger 40, box body 41, first substrate 411, second substrate 412, first air guide part 42, second air guide part 43, heater 51, radiator 52, exhaust fan 53, temperature sensor 54, control system 55, shell 61, smoke exhaust assembly 62, smoke pipe 621, suction cup 622, adjusting arm 63. DETAILED DESCRIPTION

[0021] The following are preferred implementations of the present application. It should be noted that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

[0022] Before introducing the technical solutions of the present application, the technical problems in the related technologies are introduced in detail.

[0023] Existing moxibustion smoke purification methods include: Method 1: Mechanical filtration uses filters and activated carbon to absorb particulate matter and some VOCs. This method has the disadvantages of being prone to clogging and requiring frequent replacement (one to two times per week), resulting in high maintenance costs. The removal rate for gaseous pollutants is low, for example, the removal rate for formaldehyde and benzene series is less than 50%.

[0024] Method 2: Electrostatic precipitation + oxidation uses high-voltage electrostatic adsorption of particulate matter, combined with UV photolysis or ozone oxidation to oxidize VOCs. This method has the disadvantage of exceeding the standard for ozone byproducts, exceeding 0.1 ppm, which does not comply with GB / T 18883-2002. The purification equipment consumes high energy, typically ≥500W, and is ineffective at treating high-concentration tar.

[0025] Method 3: Three-way catalytic method, through a single high-temperature heating to 150℃~450℃, the catalyst oxidizes and decomposes VOCs. The disadvantage of this method is high energy consumption, the need for continuous heating to high temperature, and high power consumption, which reaches 1.5~2.5 kW·h / m 3 ; The removal rate of benzene series is low, the removal rate is less than 30%; the catalysis is not thorough, and some intermediate products, such as CO, aldehydes, etc., are not completely decomposed, resulting in secondary pollution.

[0026] In view of this, in order to solve the above problems, please refer to Figure 1-Figure 2 This embodiment provides a moxibustion flue gas purification device 1, which includes a first catalytic module 10, a second catalytic module 20, and a third catalytic module 30. The first catalytic module 10 is used to perform a first catalytic treatment on the moxibustion flue gas to obtain a first intermediate flue gas, and the catalytic temperature of the first catalytic treatment is 50°C to 100°C; the second catalytic module 20 is connected to the first catalytic module 10 and is used to perform a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas, and the catalytic temperature of the second catalytic treatment is 120°C to 450°C; the third catalytic module 30 is connected to the second catalytic module 20 and is used to perform a third catalytic treatment on the second intermediate flue gas to obtain clean moxibustion flue gas, and the catalytic temperature of the third catalytic treatment is 80°C to 150°C.

[0027] The untreated moxibustion flue gas first enters the first catalytic module 10, and the moxibustion flue gas undergoes the first catalytic treatment in the first catalytic module 10, thereby obtaining the first intermediate flue gas. Then, the first intermediate flue gas flows from the first catalytic module 10 to the second catalytic module 20, and the first intermediate flue gas undergoes the second catalytic treatment in the second catalytic module 20, thereby obtaining the second intermediate flue gas. Subsequently, the second intermediate flue gas flows from the second catalytic module 20 to the third catalytic module 30, and the second intermediate flue gas undergoes the third catalytic treatment in the third catalytic module 30, thereby obtaining clean moxibustion flue gas. The flow direction of the moxibustion flue gas in the moxibustion flue gas purification device 1 is as follows: Figure 1 Shown in the middle direction D.

[0028] Specifically, the first catalytic module 10 is provided with a MnO2-CeO2 catalyst; in the first catalytic treatment, the MnO2-CeO2 catalyst is used to treat the moxibustion flue gas to remove part of the VOCs and part of the tar in the moxibustion flue gas to obtain the first intermediate flue gas, wherein the part of the VOCs includes α-pinene and formaldehyde.

[0029] The second catalytic module 20 is provided with a Pt-Pd / Al2O3 catalyst; in the second catalytic treatment, the Pt-Pd / Al2O3 catalyst is used to treat the first intermediate flue gas to remove part of the benzene series and another part of the tar in the first intermediate flue gas to obtain the second intermediate flue gas.

[0030] The third catalytic module 30 is provided with a CuO / ZSM-5 catalyst; in the third catalytic treatment, the CuO / ZSM-5 catalyst is used to treat the second intermediate flue gas to remove another part of the benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas to obtain the clean moxibustion flue gas.

[0031] The first catalytic treatment is also called preheating catalysis, and the first catalytic module 10 is provided with a first catalyst. Optionally, the catalytic temperature of the first catalytic treatment can be specifically exemplified as 50°C, or 55°C, or 60°C, or 65°C, or 70°C, or 75°C, or 80°C, or 85°C, or 90°C, or 95°C, or 100°C, etc. Among them, the first catalyst is a MnO2-CeO2 catalyst, which has the advantages of excellent low-temperature activity and low cost. The first catalytic treatment can remove some VOCs and some tar in the moxibustion flue gas, and some VOCs include α-pinene and formaldehyde. For example, during the first catalytic treatment, C 10 H 16 (α-pinene) undergoes a low-temperature partial oxidation reaction with O2 to produce CO2 and H2O; HCHO (formaldehyde) undergoes an oxidation reaction with O2 to produce CO2 and H2O.

[0032] Among them, during the first catalytic treatment process, the large-molecule VOCs in the moxibustion smoke can be pre-decomposed, and the side chains can be oxidatively cracked into small-molecule aldehydes and ketones. The cracking rate of large-molecule VOCs is ≥40%, which can reduce the risk of carbon deposition in subsequent catalytic modules and reduce the subsequent processing load.

[0033] The second catalytic treatment, also known as heated catalysis, involves a second catalyst in the second catalytic module 20. Optionally, the catalytic temperature for the second catalytic treatment may be, for example, 120°C, 140°C, 160°C, 180°C, 200°C, 225°C, 250°C, 275°C, 300°C, 325°C, 350°C, 375°C, 400°C, 425°C, or 450°C. The second catalyst is a Pt-Pd / Al2O3 catalyst, optionally with a precious metal loading of 0.5 wt% to 1 wt%. Pt-Pd / Al2O3 catalysts offer the advantage of high-temperature sintering resistance. The second catalytic treatment removes some benzene series and another portion of tar from the first intermediate flue gas. For example, during the second catalytic treatment, C6H6 (benzene) undergoes a complete oxidation reaction with O2 to produce CO2 and H2O.

[0034] Among them, during the second catalytic treatment process, harmful substances can be completely oxidized, most of the benzene series and tar can be removed and converted into CO, and the benzene ring is opened and oxidized to produce CO2 and H2O. The benzene series removal rate is ≥95%, and the CO conversion rate is ≥90%.

[0035] The third catalytic treatment, also known as waste heat catalysis, is equipped with a third catalyst in the third catalytic module 30. Optionally, the catalytic temperature for the third catalytic treatment may be, for example, 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, or 150°C. The third catalyst is a CuO / ZSM-5 catalyst, with CuO supported on the ZSM-5 molecular sieve, which selectively reduces NOx. The third catalytic treatment removes another portion of BTEX, CO, NOx, and remaining VOCs from the second intermediate flue gas. For example, during the third catalytic treatment, CO and NO undergo a selective catalytic reduction reaction to produce CO2 and N2.

[0036] Among them, during the third catalytic treatment process, the residual pollutants can be deeply purified, and the NOx emission is ≤50 mg / m 3 , CO emissions ≤10 ppm.

[0037] Therefore, for different pollutants, the moxibustion flue gas purification device 1 is affected by factors such as differences in the chemical bond energy of the pollutants, differences in catalyst activity temperature, and inhibition of side reactions. This embodiment divides the moxibustion flue gas treatment process into three catalytic stages at three temperature intervals for various pollutants in moxibustion flue gas, and configures different catalysts. Through energy cascade utilization and catalytic reaction optimization, it achieves graded treatment of different pollutants, avoiding the "treatment blind spot" at a single catalytic temperature, such as the difficulty of benzene decomposition at low temperatures and increased NOx generation at high temperatures, thereby achieving efficient purification and energy saving.

[0038] In one embodiment, the moxibustion flue gas purification device 1 includes a heat exchanger 40, and at least part of the first catalytic module 10 and at least part of the third catalytic module 30 are arranged in the heat exchanger 40; wherein, in the heat exchanger 40, the second intermediate flue gas located in the third catalytic module 30 is used to heat the moxibustion flue gas located in the first catalytic module 10.

[0039] Heat exchange occurs between the second intermediate flue gas and the moxibustion flue gas to heat the moxibustion flue gas of the first catalytic module 10 and cool the second intermediate flue gas of the third catalytic module 30, thereby realizing heat recovery and reducing the energy consumption of the main heater 51 by 30% to 50%. In addition, by integrating the catalytic function of the heat exchanger 40, the volume of the moxibustion flue gas purification device 1 can be reduced. Among them, in the heat exchanger 40, the waste heat recovery efficiency is ≥60%, and the power consumption of the moxibustion flue gas purification device 1 is ≤1.0 kW·h / m 3 .

[0040] In summary, the moxibustion flue gas purification equipment 1 provided in this embodiment can effectively remove different pollutants in the moxibustion flue gas by performing three-stage catalysis on the moxibustion flue gas, and perform catalytic treatment at low temperature, high temperature and medium temperature in sequence, thereby obtaining clean moxibustion flue gas, improving purification efficiency and reducing pollution; and, this embodiment also uses the second intermediate flue gas to preheat the newly-incoming moxibustion flue gas, reducing the energy consumption of the heater 51 and realizing waste heat recovery.

[0041] In addition, by adopting preheating catalysis, the contamination of the catalysts in the second catalytic module 20 and the third catalytic module 30 by macromolecular substances can be reduced, the overall life of the catalysts can be increased by 2 to 3 times, and the cost can be reduced.

[0042] Please refer to Figure 1-Figure 2 In one embodiment, the first catalytic module 10 includes a first pipe 11, which is used to accommodate the moxibustion smoke and the first intermediate smoke. The third catalytic module 30 includes a third pipe 31, which is used to accommodate the second intermediate smoke and the clean moxibustion smoke.

[0043] The heat exchanger 40 includes a box body 41, and the first pipe 11 and the third pipe 31 are arranged in the box body 41; wherein, the first pipe 11 and the third pipe 31 are arranged adjacent to each other, or the first pipe 11 is sleeved in the third pipe 31, or the third pipe 31 is sleeved in the first pipe 11.

[0044] Specifically, the moxibustion flue gas and the second intermediate flue gas can exchange heat through the pipe wall. The moxibustion flue gas at room temperature is heated to 50°C~100°C after heat exchange, and the heated moxibustion flue gas can be subjected to a first catalytic treatment in the first pipe 11 to obtain a first intermediate flue gas. The second intermediate flue gas flowing from the second catalytic module 20 to the third pipe 31 has a higher temperature. After heat exchange, the second intermediate flue gas is cooled to 80°C~150°C. The cooled second intermediate flue gas can be subjected to a third catalytic treatment in the third pipe 31 to obtain clean moxibustion flue gas. The flow direction of the flue gas in the first pipe 11 is as follows: Figure 2 The flow direction of the flue gas in the third pipe 31 is as shown in the middle direction W1. Figure 2 In the middle direction W2.

[0045] Optionally, the material of the first pipe 11 and the third pipe 31 is selected from a composite material of 316L stainless steel and aluminum alloy.

[0046] Optionally, the heat exchanger 40 further forms the first pipe 11 , or the heat exchanger 40 further forms the third pipe 31 , or the heat exchanger 40 further forms the first pipe 11 and the third pipe 31 .

[0047] When the first pipe 11 and the third pipe 31 are arranged adjacent to each other, optionally, the outer pipe walls of the first pipe 11 and the third pipe 31 abut against each other; optionally, a heat conducting component is provided between the first pipe 11 and the third pipe 31, and the first pipe 11 and the third pipe 31 are indirectly connected through the heat conducting component.

[0048] When the first pipe 11 is sleeved on the third pipe 31, the moxibustion smoke and the first intermediate smoke in the first pipe 11 are in direct contact with the outer peripheral side wall of the third pipe 31, or, the outer peripheral side wall of the third pipe 31 is provided with a heat-conducting component, and the moxibustion smoke and the first intermediate smoke in the first pipe 11 are in indirect contact with the third pipe 31 through the heat-conducting component.

[0049] When the third pipe 31 is sleeved on the first pipe 11, the second intermediate flue gas and clean moxibustion flue gas in the third pipe 31 are in direct contact with the outer peripheral side wall of the first pipe 11, or, the outer peripheral side wall of the first pipe 11 is provided with a heat-conducting component, and the second intermediate flue gas and clean moxibustion flue gas in the third pipe 31 are in indirect contact with the first pipe 11 through the heat-conducting component.

[0050] Furthermore, the box body 41 includes a first substrate 411 and a second substrate 412 arranged opposite to each other, and the heat exchanger 40 also includes a first guide portion 42 provided on the first substrate 411, and a second guide portion 43 provided on the second substrate 412. The first guide portion 42 and the second guide portion 43 are arranged alternately at intervals, and the first substrate 411, the second substrate 412, the first guide portion 42, and the second guide portion 43 are arranged to form at least part of the third pipe 31.

[0051] In the heat exchanger 40 , the first pipe 11 is disposed in the third pipe 31 , and at least a portion of the first pipe 11 is bent and extended.

[0052] The first guide portion 42 is connected to the first substrate 411, and the first guide portion 42 is spaced apart from the second substrate 412. The second guide portion 43 is connected to the second substrate 412, and the second guide portion 43 is spaced apart from the first substrate 411. Optionally, the number of the first guide portion 42 is at least one, and the number of the second guide portion 43 is at least one. The first guide portion 42 and the second guide portion 43 are alternately arranged, which can also be understood as one first guide portion 42, one second guide portion 43, another first guide portion 42, another second guide portion 43 are arranged in sequence, and so on. For example, the first substrate 411, the second substrate 412, the first guide portion 42, and the second guide portion 43 are arranged to form an S-shaped third conduit 31.

[0053] Within the heat exchanger 40, the third pipe 31 is sleeved with the first pipe 11. Specifically, the housing 41 is further provided with a third smoke inlet and a third smoke outlet connected to the third pipe 31. The second intermediate smoke enters the third pipe 31 from the third smoke inlet, and the clean moxibustion smoke flows out of the third pipe 31 from the third smoke outlet. The first catalytic module 10 also includes a first smoke inlet and a first smoke outlet connected to the first pipe 11. The moxibustion smoke enters the first pipe 11 from the first smoke inlet, and the first intermediate smoke flows out of the first pipe 11 from the first smoke outlet. The first smoke inlet is provided through the housing 41, and the first smoke outlet is provided through the housing 41. The first smoke outlet is connected to the second pipe of the second catalytic module 20.

[0054] Therefore, this embodiment optimizes the structure of the moxibustion flue gas purification equipment 1 and designs a heat exchanger 40 to enable heat exchange between the second intermediate flue gas and the moxibustion flue gas to heat the moxibustion flue gas of the first catalytic module 10 and cool the second intermediate flue gas of the third catalytic module 30, thereby reducing the energy consumption of the heater 51 and realizing waste heat recovery and utilization.

[0055] In one embodiment, the smoke inlet end of the first pipe 11 is provided with a heat-conducting fin, the first catalytic module 10 is provided with a first catalyst, the first catalyst is supported on the heat-conducting fin, and the specific surface area of ​​the first catalyst is ≥150 m 2 / g.

[0056] The heat conducting fins are provided in the first pipe 11. The heat conducting fins are made of heat conducting material, which can increase the contact area for heat exchange between the second intermediate flue gas and the moxibustion flue gas, thereby improving the heat exchange efficiency between the second intermediate flue gas and the moxibustion flue gas.

[0057] The first catalyst may be a MnO2-CeO2 catalyst. The specific surface area of ​​the first catalyst may be, for example, 150 m 2 / g, or 160 m 2 / g, or 170 m 2 / g, or 180 m 2 / g, or 190 m 2 / g, or 200 m 2 / g, or 225 m 2 / g, or 250 m 2 / g, etc. Preferably, the specific surface area of ​​the first catalyst is ≥200 m 2 / g.

[0058] In this embodiment, the specific surface area of ​​the first catalyst is limited to ≥150 m 2 / g, so as to improve the activity and stability of the first catalyst, improve the utilization rate and catalytic performance of the first catalyst, and thus improve the purification effect of the first catalytic treatment.

[0059] In addition, the heat-conducting fins are arranged at the smoke inlet end of the first pipe 11. In other words, the heat-conducting fins are arranged at the part of the first pipe 11 close to the first smoke inlet, and the MnO2-CeO2 catalyst has the advantage of excellent low-temperature activity, so this arrangement is conducive to further improving the utilization rate and catalytic performance of the first catalyst, thereby improving the purification effect of the first catalytic treatment.

[0060] The second catalytic module 20 includes a second pipe connecting the first pipe 11 and the third pipe 31, the second pipe is used to accommodate the first intermediate flue gas and the second intermediate flue gas, a honeycomb carrier is provided in the second pipe, the second catalytic module 20 is provided with a second catalyst, and the second catalyst is loaded on the honeycomb carrier, and the pore density of the honeycomb carrier is 350 cpsi~450 cpsi.

[0061] The second catalyst may be a Pt-Pd / Al2O3 catalyst. The pore density of the honeycomb substrate may be, for example, 350 cpsi, 360 cpsi, 370 cpsi, 380 cpsi, 390 cpsi, 400 cpsi, 410 cpsi, 420 cpsi, 430 cpsi, 440 cpsi, or 450 cpsi. Preferably, the pore density of the honeycomb substrate is between 380 cpsi and 420 cpsi.

[0062] In this embodiment, by limiting the pore density of the honeycomb carrier to 350 cpsi-450 cpsi, the honeycomb carrier can load more second catalyst, which is beneficial to increase the contact area between the first intermediate flue gas and the second catalyst, thereby improving the purification effect of the second catalytic treatment.

[0063] The third catalytic module 30 is provided with a third catalyst, and the third catalyst is coated on the smoke outlet end of the third pipe 31 .

[0064] The third catalyst is coated on the inner wall of the third pipe 31, covering the portion of the third pipe 31 near the third smoke outlet. By the time the second intermediate flue gas reaches the portion of the third pipe 31 near the third smoke outlet, it has already completed most of its heat exchange with the moxibustion smoke, reducing its temperature to 80°C to 150°C. Furthermore, considering that side reactions are more likely to occur at temperatures above 180°C, exacerbating NOx production, this embodiment applies the third catalyst to the smoke outlet end of the third pipe 31 to suppress these side reactions and enhance the purification effectiveness of the third catalytic treatment.

[0065] Please refer to Figure 1-Figure 2 In one embodiment, the moxibustion smoke purification device 1 further includes a heater 51, a radiator 52, and an exhaust fan 53. The heater 51 is provided on one side of the second catalytic module 20 and is used to heat the first intermediate smoke located in the second catalytic module 20; the radiator 52 is provided on one side of the third catalytic module 30 and is used to cool the clean moxibustion smoke; the exhaust fan 53 connects the third catalytic module 30 with the outside world and is used to discharge the clean moxibustion smoke to the outside world.

[0066] Optionally, the moxibustion flue gas purification device 1 further includes a temperature sensor 54 for detecting the catalytic temperature of the second catalytic module 20. The temperature sensor 54 may be a thermocouple and is disposed adjacent to the heater 51.

[0067] Radiator 52 is used to cool the clean moxibustion smoke, bringing it down to room temperature to prevent burns to the user. Specifically, after being cooled by radiator 52, the clean moxibustion smoke is drawn into exhaust fan 53 and then exhausted to the outside world under the action of exhaust fan 53. Radiator 52 can also be a cooling fan.

[0068] Among them, the moxibustion smoke purification equipment 1 can collect the heating temperature, the shell 61 temperature, the cooling fan and the exhaust fan 53 current, and control the heater 51, the exhaust fan 53 and the cooling fan through optimization calculation, so that the smoke purifier can achieve the goal of removing smoke cleanly and reducing energy consumption.

[0069] Furthermore, the moxibustion smoke purification device 1 further includes a control system 55, which is electrically connected to the heater 51, the radiator 52, the exhaust fan 53, and the temperature sensor 54. The control system 55 may be a microcontroller unit (MCU).

[0070] Furthermore, temperature monitoring uses a dedicated temperature measurement chip, which can promptly detect abnormal conditions such as thermocouple breakage, short circuit, and grounding to ensure normal temperature measurement of the equipment.

[0071] Furthermore, a small resistor is used to sample and monitor the current of the cooling fan and exhaust fan 53. The sampled signal is then passed through an op amp and the MCU performs current calculations. Pulse Width Modulation (PWM) output control is used to adjust the heating power and fan speed of the heater 51 and exhaust fan 53.

[0072] Furthermore, the moxibustion flue gas purification device 1 has an intelligent anti-burning function. When the MCU detects an unexpected power outage or power failure, it intelligently activates the lithium battery pack to provide power, continues to operate the cooling fan and exhaust fan 53, and protects the core first catalytic module 10, the second catalytic module 20, and the third catalytic module 30. The device will only stop when the temperature of the first catalytic module 10, the second catalytic module 20, and the third catalytic module 30 reaches a safe level. The lithium battery pack has a power management design that automatically charges and avoids battery failure caused by long-term shallow charging and discharging.

[0073] Furthermore, the moxibustion smoke purification device 1 has a comprehensive self-checking function for the core control system 55 to ensure the safe and stable operation of the control system 55. The control system 55 with self-checking function includes core components such as random access memory (RAM), flash memory (FLASH), voice module, LCD module, SD card, etc. If an abnormality is detected during self-checking, the output is locked and the operator is notified through LCD or voice to take timely action.

[0074] Furthermore, the moxibustion smoke purification device 1 features a self-diagnostic function for the heating module. By analyzing the heating power and temperature curve characteristics after startup, it intelligently determines whether the heating module is functioning properly. If an abnormality is detected, the output is locked, and the operator is prompted via LCD or voice prompts to take timely action. The heating module includes a heater 51 and a heat exchanger 40.

[0075] Furthermore, the moxibustion smoke purification equipment 1 has a self-inspection function for the operating conditions of the cooling fan and the exhaust fan 53. By monitoring the current of the cooling fan and the exhaust fan 53, it can detect in time when the cooling fan stops or the exhaust fan 53 motor is short-circuited, stop the equipment from working, avoid safety accidents such as high temperature damage to the equipment by the heater 51, and send LCD and voice prompts.

[0076] Furthermore, the moxibustion smoke purification device 1 integrates the five tones of Traditional Chinese Medicine (TCM), corresponding to the five internal organs and the five elements. The five tones (gong, shang, jiao, zhi, and yu) are used to regulate physical and mental balance through music. The moxibustion smoke purification device 1 can adjust the music volume to coordinate with the moxibustion process, achieving the desired moxibustion effect.

[0077] Among them, the palace of the five tones corresponds to the earth of the five elements, and corresponds to the spleen and stomach in the internal organs. It has the effects of being thick and steady, aiding digestion and calming the mind.

[0078] The Shang of the Five Tones corresponds to the metal of the Five Elements, and to the lungs and large intestine among the internal organs. It has the effect of clearing and raising the voice, regulating breathing, and relieving sadness.

[0079] The Jiao in the Five Sounds corresponds to the Wood in the Five Elements, and to the liver and gallbladder in the internal organs. It has the effects of invigorating the body, relieving liver depression, and alleviating anger.

[0080] The Zheng of the Five Sounds corresponds to the fire of the Five Elements, and to the heart and small intestine. It has the effect of being lively and enthusiastic, invigorating the mind, and improving shortness of breath caused by extreme joy.

[0081] The yu in the five notes corresponds to the water in the five elements, and to the kidney and bladder in the internal organs. It has the effect of being soft and long-lasting, nourishing yin and tonifying the kidney, and relieving fear.

[0082] Therefore, this embodiment can assist the second catalytic module 20 in purifying the moxibustion smoke by providing a heater 51, a radiator 52, and an exhaust fan 53, and can also cool the clean moxibustion smoke and send it to the outside to avoid scalding the user.

[0083] In addition, the heater 51, the radiator 52, and the exhaust fan 53 can also be equipped with various detectors, an MCU-based control system 55 and other auxiliary components, and adopt digital information technology to enable the moxibustion smoke purification equipment 1 to have complete self-test functions, anti-burning treatment functions, self-diagnosis functions, etc., optimize the purification efficiency and energy consumption of the equipment, intelligently diagnose the operating conditions of the equipment, improve measures to ensure the safe operation of the equipment, and use a friendly human-machine interface design to make the equipment easy to operate.

[0084] Please refer to Figure 1-Figure 4 In one embodiment, the moxibustion smoke purification device 1 further includes a shell 61, a smoke exhaust component 62, and an adjustment arm 63. The shell 61 has a receiving space, and the first catalytic module 10, the second catalytic module 20, the third catalytic module 30, the heater 51, the radiator 52, and the exhaust fan 53 are all arranged in the receiving space; the smoke exhaust component 62 is arranged outside the shell 61, and the smoke exhaust component 62 includes a smoke pipe 621 and a suction cup 622. The smoke pipe 621 connects the exhaust fan 53 and the suction cup 622, and the clean moxibustion smoke flows through the smoke pipe 621 and is discharged from the suction cup 622; one end of the adjustment arm 63 is fixed to the outside of the shell 61, and the other end is detachably connected to the suction cup 622. The adjustment arm 63 is used to drive the suction cup 622 to move relative to the shell 61.

[0085] Optionally, the housing 61 is provided with at least one movable wheel for driving the housing 61 to move. The movable wheel may be a non-slip rubber caster with a brake. The housing 61 is provided with a display screen. The material of the housing 61 is selected from metal or alloy materials.

[0086] For example, the housing 61 is made of metal and is provided with four anti-skid rubber casters with brakes, which can be universally rotated. A 7-inch touch screen control interface is provided on the front of the housing 61.

[0087] Specifically, under the action of the exhaust fan 53, the clean moxibustion smoke flows from the third catalytic module 30 to the smoke pipe 621, and then flows from the smoke pipe 621 to the suction cup 622. In addition, the suction cup 622 connects the smoke pipe 621 with the outside world.

[0088] Optionally, the adjustment arm 63 utilizes a multi-jointed pneumatic arm that supports flexible adjustment up, down, left, right, and rotation. For example, the multi-jointed pneumatic arm can flexibly move within a hemisphere with a radius of 130 cm and a height of 50 cm-140 cm. Damping plates are fastened between the multi-jointed pneumatic arms, or between the multi-jointed pneumatic arm and the suction cup 622 to adjust the movement and positioning of the suspension arm. Optionally, a quick-release handle is provided at the end of the flexible suspension arm to facilitate the replacement of different suction cups 622 on the suspension arm. The flexible suspension arm can automatically adapt to the weight of the suction cup 622 of 2-8 kg.

[0089] Optionally, there is at least one smoke tube 621, at least one suction cup 622, and at least one adjustment arm 63. For example, the housing 61 is provided with two smoke tubes 621, each with a suction cup 622, and two adjustment arms 63, each connected to a suction cup 622. The suction cups 622 can optionally have different shapes or sizes depending on the moxibustion therapy being used.

[0090] Therefore, this embodiment provides a shell 61, a smoke exhaust assembly 62, and an adjustment arm 63 that cooperate with each other, making it easy to move and can be used in conjunction with various moxibustion therapies, thereby increasing the scope of application of the moxibustion smoke purification device 1.

[0091] Please refer to Figure 1-Figure 5 The present application also provides a moxibustion fume purification method, which comprises: S100, performing a first catalytic treatment on the moxibustion flue gas to obtain a first intermediate flue gas, wherein the catalytic temperature of the first catalytic treatment is 50°C to 100°C.

[0092] S200 , performing a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120° C. to 450° C.

[0093] S300, performing a third catalytic treatment on the second intermediate flue gas to obtain clean moxibustion flue gas, wherein the catalytic temperature of the third catalytic treatment is 80°C to 150°C.

[0094] Specifically, in the first catalytic treatment, the moxibustion flue gas is treated with a MnO2-CeO2 catalyst to remove part of the VOCs and part of the tar in the moxibustion flue gas to obtain the first intermediate flue gas, wherein the part of the VOCs includes α-pinene and formaldehyde.

[0095] In the second catalytic treatment, the first intermediate flue gas is treated with a Pt-Pd / Al2O3 catalyst to remove a portion of benzene series and another portion of tar in the first intermediate flue gas to obtain the second intermediate flue gas.

[0096] In the third catalytic treatment, the second intermediate flue gas is treated with a CuO / ZSM-5 catalyst to remove another portion of benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas to obtain the clean moxibustion flue gas.

[0097] Optionally, in the first catalytic treatment and the third catalytic treatment, the second intermediate flue gas located in the third catalytic module 30 is used to heat the moxibustion flue gas located in the first catalytic module 10 .

[0098] Furthermore, in the heat exchanger 40 , the second intermediate flue gas is controlled to perform heat exchange with the moxibustion flue gas, so that the temperature of the moxibustion flue gas is increased and the temperature of the second intermediate flue gas is decreased.

[0099] The moxibustion fume purification device 1 provided in this application can be used to implement the moxibustion fume purification method provided in this application, and other moxibustion fume purification devices 1 can also be used to implement the moxibustion fume purification method provided in this application.

[0100] The first catalytic treatment, the second catalytic treatment and the third catalytic treatment are described above, and details are not repeated here.

[0101] For different pollutants, the moxa smoke purification equipment 1 is affected by the differences in chemical bond energy of pollutants, the differences in catalyst activity temperature, and the inhibition of side reactions. The present embodiment divides the moxa smoke treatment process into three temperature interval catalytic stages for various pollutants in moxa smoke, and configures different catalysts, so as to realize the graded treatment of different pollutants through energy cascade utilization and catalytic reaction optimization, avoid the "treatment blind area" at a single catalytic temperature, such as difficult decomposition of benzene at low temperature and increased generation of NOx at high temperature, and realize efficient purification and energy saving.

[0102] In summary, the moxa smoke purification method provided by the present embodiment can effectively remove different pollutants in moxa smoke through three-stage catalysis of moxa smoke, and obtain clean moxa smoke, improve purification efficiency, and reduce pollution. In addition, the present embodiment also uses the second intermediate smoke to preheat the newly entered moxa smoke, reduces the energy consumption of the heater 51, and realizes waste heat recovery.

[0103] In addition, by using preheating catalysis, the pollution of macromolecular substances to the catalysts in the second catalytic module 20 and the third catalytic module 30 can be reduced, the overall life of the catalysts can be improved by 2-3 times, and the cost can be reduced.

[0104] In order to make the purpose and advantages of the present application more clear, the effect of the moxa smoke purification method of the present application is further described in detail below in combination with specific examples.

[0105] Comparative example: single heating catalysis, catalytic temperature is 450℃, and the catalyst is a noble metal catalyst.

[0106] Example: first catalytic treatment, second catalytic treatment and third catalytic treatment; wherein the first catalytic temperature is 100℃, the second catalytic temperature is 450℃, and the third catalytic temperature is 150℃; the catalyst for the first catalytic treatment is a MnO2-CeO2 catalyst, the catalyst for the second catalytic treatment is a Pt-Pd / Al2O3 catalyst, and the catalyst for the third catalytic treatment is a CuO / ZSM-5 catalyst. In addition, in the first catalytic treatment and the third catalytic treatment, the second intermediate smoke located in the third catalytic module is used to heat the moxa smoke located in the first catalytic module.

[0107] In the comparative example and the example, the simulated moxa smoke flow is 5 m 3 / min, the initial PM2.5=1000 μg / m 3 , benzene=20 mg / m 3 ; as shown in the following table: Table 1 Parameters of the moxibustion smoke purification method of the comparative example and the embodiment

[0108] In summary, as shown in Table 1, the moxibustion flue gas purification method provided by the present application is adopted. By performing three-stage catalysis on the moxibustion flue gas, catalytic treatment is performed at low temperature, high temperature and medium temperature in sequence, which can effectively remove different pollutants in the moxibustion flue gas, obtain clean moxibustion flue gas, improve purification efficiency, and achieve a PM2.5 removal rate of up to 98%, a benzene removal rate of up to 97%, and reduce pollution; in addition, the present application also uses the second intermediate flue gas to preheat the newly-incoming moxibustion flue gas to realize waste heat recovery and utilization, thereby reducing the energy consumption of the heater, saving 1 times the energy consumption compared with the control ratio, and saving energy.

[0109] Unless otherwise specified or incompatible therewith, terms and phrases used in this application shall have the following meanings: In this application, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features.

[0110] In this application, "one or several" refers to any one, any two, or any two or more of the listed items. Among them, "several" refers to any two or any two or more.

[0111] In the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0112] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integration. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary. They may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0113] References to "embodiments" and "implementation methods" in this application mean that the specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrases in various locations in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should be understood that the features, structures or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of this application, unless there is a contradiction between them.

[0114] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A moxibustion fume purification device, characterized in that: The moxibustion fume purification equipment comprises: a first catalytic module, configured to perform a first catalytic treatment on the moxibustion flue gas to obtain a first intermediate flue gas, wherein the catalytic temperature of the first catalytic treatment is 50° C. to 100° C.; a second catalytic module, connected to the first catalytic module, for performing a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120° C. to 450° C.; The third catalytic module is connected to the second catalytic module and is used to perform a third catalytic treatment on the second intermediate flue gas to obtain clean moxibustion flue gas. The catalytic temperature of the third catalytic treatment is 80°C~150°C.

2. The moxibustion fume purification device according to claim 1, characterized in that The first catalytic module is provided with a MnO2-CeO2 catalyst; in the first catalytic treatment, the MnO2-CeO2 catalyst is used to treat the moxibustion flue gas to remove some VOCs and some tar in the moxibustion flue gas to obtain the first intermediate flue gas, wherein the some VOCs include α-pinene and formaldehyde; The second catalytic module is provided with a Pt-Pd / Al2O3 catalyst; in the second catalytic treatment, the Pt-Pd / Al2O3 catalyst is used to treat the first intermediate flue gas to remove a portion of benzene series and another portion of tar in the first intermediate flue gas to obtain the second intermediate flue gas; The third catalytic module is provided with a CuO / ZSM-5 catalyst; in the third catalytic treatment, the CuO / ZSM-5 catalyst is used to treat the second intermediate flue gas to remove another part of the benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas to obtain the clean moxibustion flue gas.

3. The moxibustion fume purification device according to claim 1, characterized in that The moxibustion flue gas purification device includes a heat exchanger, at least part of the first catalytic module and at least part of the third catalytic module are arranged in the heat exchanger; Wherein, in the heat exchanger, the second intermediate flue gas located in the third catalytic module is used to heat the moxibustion flue gas located in the first catalytic module.

4. The moxibustion fume purification device according to claim 3, characterized in that: The first catalytic module includes a first pipe for accommodating the moxibustion smoke and the first intermediate smoke; the third catalytic module includes a third pipe for accommodating the second intermediate smoke and the clean moxibustion smoke; The heat exchanger includes a box body, and the first pipe and the third pipe are arranged in the box body; wherein, the first pipe and the third pipe are arranged adjacent to each other, or the first pipe is sleeved on the third pipe, or the third pipe is sleeved on the first pipe.

5. The moxibustion fume purification device according to claim 4, characterized in that: The housing includes a first base plate and a second base plate disposed opposite to each other, the heat exchanger further includes a first air guide portion disposed on the first base plate, and a second air guide portion disposed on the second base plate, the first air guide portion and the second air guide portion being alternately arranged, and the first base plate, the second base plate, the first air guide portion, and the second air guide portion enclosing at least a portion of the third pipe; In the heat exchanger, the first pipe is arranged in the third pipe, and at least a portion of the first pipe is bent and extended.

6. The moxibustion fume purification device according to claim 4, characterized in that: The smoke inlet end of the first pipe is provided with a heat-conducting fin, the first catalytic module is provided with a first catalyst, the first catalyst is loaded on the heat-conducting fin, and the specific surface area of ​​the first catalyst is ≥150 m 2 / g; The second catalytic module includes a second pipe connecting the first pipe and the third pipe, the second pipe is used to accommodate the first intermediate flue gas and the second intermediate flue gas, a honeycomb substrate is provided in the second pipe, the second catalytic module is provided with a second catalyst, and the second catalyst is supported on the honeycomb substrate, and the pore density of the honeycomb substrate is 350 cpsi to 450 cpsi; The third catalytic module is provided with a third catalyst, and the third catalyst is coated on the smoke outlet end of the third pipe.

7. The moxibustion fume purification device according to claim 1, characterized in that: The moxibustion fume purification equipment also includes: a heater, disposed on one side of the second catalytic module, for heating the first intermediate flue gas located in the second catalytic module; a radiator, provided on one side of the third catalytic module, for cooling the clean moxibustion smoke; An exhaust fan connects the third catalytic module with the outside world and is used to discharge the clean moxibustion smoke to the outside world.

8. The moxibustion fume purification device according to claim 7, characterized in that: The moxibustion fume purification equipment also includes: The housing has a receiving space, wherein the first catalytic module, the second catalytic module, the third catalytic module, the heater, the radiator, and the exhaust fan are all arranged in the receiving space; A smoke exhaust component is provided outside the housing, the smoke exhaust component includes a smoke pipe and a suction cup, the smoke pipe is connected to the exhaust fan and the suction cup, the clean moxibustion smoke flows through the smoke pipe and is discharged from the suction cup; An adjusting arm has one end fixed to the outside of the shell and the other end detachably connected to the suction cup, and the adjusting arm is used to drive the suction cup to move relative to the shell.

9. A moxibustion flue gas purification method, characterized in that: The moxibustion fume purification method comprises: Performing a first catalytic treatment on the moxibustion flue gas to obtain a first intermediate flue gas, wherein the catalytic temperature of the first catalytic treatment is 50° C. to 100° C.; performing a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120° C. to 450° C.; The second intermediate flue gas is subjected to a third catalytic treatment to obtain clean moxibustion flue gas, and the catalytic temperature of the third catalytic treatment is 80° C. to 150° C.

10. The moxibustion fume purification method according to claim 9, characterized in that: In the first catalytic treatment, the moxibustion flue gas is treated with a MnO2-CeO2 catalyst to remove part of the VOCs and part of the tar in the moxibustion flue gas, thereby obtaining the first intermediate flue gas, wherein the part of the VOCs includes α-pinene and formaldehyde; In the second catalytic treatment, the first intermediate flue gas is treated with a Pt-Pd / Al2O3 catalyst to remove a portion of benzene series and another portion of tar in the first intermediate flue gas to obtain the second intermediate flue gas; In the third catalytic treatment, the second intermediate flue gas is treated with a CuO / ZSM-5 catalyst to remove another portion of benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas to obtain the clean moxibustion flue gas.

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