Moxibustion flue gas purification equipment and moxibustion flue gas purification method

Abstract

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

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of moxa smoke treatment, and particularly relates to a moxa smoke purification device and a moxa smoke purification method. BACKGROUND

[0002] As a traditional Chinese medicine physiotherapy method, moxa smoke contains a large amount of harmful substances such as volatile organic compounds (VOCs), tar and odors when burning moxa sticks. However, the prior art still has problems such as low purification efficiency, high energy consumption and secondary pollution. SUMMARY

[0003] Therefore, the first aspect of the application provides a moxa smoke purification device, which comprises:

[0004] a first catalytic module for performing first catalytic treatment on moxa smoke to obtain first intermediate smoke, wherein the catalytic temperature of the first catalytic treatment is 50-100 DEG C;

[0005] a second catalytic module connected to the first catalytic module for performing second catalytic treatment on the first intermediate smoke to obtain second intermediate smoke, wherein the catalytic temperature of the second catalytic treatment is 120-450 DEG C;

[0006] a third catalytic module connected to the second catalytic module for performing third catalytic treatment on the second intermediate smoke to obtain clean moxa smoke, wherein the catalytic temperature of the third catalytic treatment is 80-150 DEG C.

[0007] In the first catalytic treatment, the MnO2-CeO2 catalyst is used to treat the moxa smoke to remove part of VOCs and part of tar in the moxa smoke, and obtain the first intermediate smoke, wherein the part of VOCs includes alpha-pinene and formaldehyde.

[0008] In the second catalytic treatment, the Pt-Pd / Al2O3 catalyst is used to treat the first intermediate smoke to remove part of benzene series and another part of tar in the first intermediate smoke, and obtain the second intermediate smoke.

[0009] In the third catalytic treatment, the CuO / ZSM-5 catalyst is used to treat the second intermediate smoke to remove another part of benzene series, CO, NOx and remaining VOCs in the second intermediate smoke, and obtain the clean moxa smoke.

[0010] The moxibustion flue gas purification equipment comprises 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.

[0011] In the heat exchanger, the second intermediate flue gas of the third catalytic module is used for heating the moxibustion flue gas of the first catalytic module.

[0012] The first catalytic module comprises a first pipeline for accommodating the moxibustion flue gas and the first intermediate flue gas, and the third catalytic module comprises a third pipeline for accommodating the second intermediate flue gas and the clean moxibustion flue gas.

[0013] The heat exchanger comprises a box body, and the first pipeline and the third pipeline are arranged in the box body; wherein the first pipeline and the third pipeline are arranged adjacently, or the first pipeline is sleeved on the third pipeline, or the third pipeline is sleeved on the first pipeline.

[0014] The box body comprises oppositely arranged first and second base plates, and the heat exchanger further comprises a first flow guide part arranged on the first base plate and a second flow guide part arranged on the second base plate; the first and second flow guide parts are alternately and spacedly arranged, and the first base plate, the second base plate, the first flow guide part and the second flow guide part surround to form at least part of the third pipeline.

[0015] In the heat exchanger, the first pipeline is arranged in the third pipeline, and at least part of the first pipeline is arranged in a bent manner.

[0016] The first pipeline is provided with heat-conducting fins at a flue gas inlet end, the first catalytic module is provided with a first catalyst, the first catalyst is loaded on the heat-conducting fins, and the specific surface area of the first catalyst is greater than or equal to 150 m 2 / g.

[0017] The second catalytic module comprises a second pipeline connected with the first pipeline and the third pipeline, the second pipeline is used for accommodating the first intermediate flue gas and the second intermediate flue gas, the second pipeline is provided with a honeycomb carrier, the second catalytic module is provided with a second catalyst, the second catalyst is loaded on the honeycomb carrier, and the pore density of the honeycomb carrier is 350 cpsi-450 cpsi.

[0018] The third catalytic module is provided with a third catalyst, and the third catalyst is coated on the flue gas outlet end of the third pipeline.

[0019] The moxibustion flue gas purification equipment further comprises:

[0020] a heater disposed on one side of the second catalytic module and used for heating the first intermediate flue gas located in the second catalytic module;

[0021] a radiator disposed on one side of the third catalytic module and used for cooling the clean moxa smoke;

[0022] an exhaust fan in communication with the third catalytic module and the outside world and used for discharging the clean moxa smoke to the outside world.

[0023] The moxa smoke purification device further comprises:

[0024] a housing having 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 disposed in the receiving space;

[0025] a smoke exhaust assembly disposed outside the housing, wherein the smoke exhaust assembly comprises a smoke pipe and a suction cup, the smoke pipe is in communication with the exhaust fan and the suction cup, and the clean moxa smoke flows through the smoke pipe and is discharged at the suction cup;

[0026] an adjusting arm having one end fixed outside the housing 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 housing.

[0027] The second aspect of the present application provides a moxa smoke purification method, which comprises:

[0028] performing first catalytic treatment on the moxa smoke to obtain first intermediate flue gas, wherein the catalytic temperature of the first catalytic treatment is 50-100°C;

[0029] performing second catalytic treatment on the first intermediate flue gas to obtain second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120-450°C;

[0030] performing third catalytic treatment on the second intermediate flue gas to obtain clean moxa smoke, wherein the catalytic temperature of the third catalytic treatment is 80-150°C.

[0031] In the first catalytic treatment, the moxa smoke is treated with a MnO2-CeO2 catalyst to remove part of VOCs and part of tar in the moxa smoke, thereby obtaining the first intermediate flue gas, and the part of VOCs includes α-pinene and formaldehyde;

[0032] In the second catalytic treatment, the first intermediate flue gas is treated with a Pt-Pd / Al2O3 catalyst to remove part of benzene series and another part of tar in the first intermediate flue gas, thereby obtaining the second intermediate flue gas;

[0033] In the third catalytic treatment, the second intermediate flue gas is treated by using a CuO / ZSM-5 catalyst to remove another part of benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas, so as to obtain the clean moxibustion flue gas.

[0034] The moxibustion flue gas purification device and method provided by the application can effectively remove different pollutants in the moxibustion flue gas by three-stage catalysis, and obtain clean moxibustion flue gas, improve purification efficiency, and reduce pollution. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments of the application will be described below.

[0036] Figure 1 The structure schematic diagram of the moxibustion flue gas purification device provided by an embodiment of the application.

[0037] Figure 2 The structure schematic diagram of the heat exchanger provided by an embodiment of the application.

[0038] Figure 3 The perspective structure diagram of the moxibustion flue gas purification device provided by an embodiment of the application.

[0039] Figure 4 The perspective structure diagram of the moxibustion flue gas purification device provided by an embodiment of the application in another view.

[0040] Figure 5 The flowchart of the moxibustion flue gas purification method provided by an embodiment of the application.

[0041] Label explanation: moxibustion flue gas purification device 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 base plate 411, second base plate 412, first flow guide part 42, second flow 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

[0042] The preferred embodiments of the application are described below. It should be pointed out that those skilled in the art can make several improvements and refinements without departing from the principles of the application, and these improvements and refinements are also regarded as the protection scope of the application.

[0043] Before introducing the technical solutions of the present application, the technical problems in the related art will be introduced in detail.

[0044] The existing moxibustion flue gas purification methods include:

[0045] Method 1: mechanical filtration method, using filter screen, activated carbon to adsorb particulate matter and part of VOCs. The disadvantage of this method is that the filter screen is easy to block, and needs to be replaced frequently, 1-2 times per week, with high maintenance cost. The removal rate of gaseous pollutants is low, for example, formaldehyde, benzene series, the removal rate of gaseous pollutants is <50%.

[0046] Method 2: electrostatic precipitation + oxidation method, using high-voltage electrostatic adsorption of particulate matter, combined with UV photolysis or ozone oxidation of VOCs. The disadvantage of this method is that the ozone by-product exceeds the standard, the ozone by-product is >0.1 ppm, which does not meet the requirements of GB / T 18883-2002. The purification equipment has high energy consumption, usually ≥500W, and the treatment effect of high-concentration tar is poor.

[0047] Method 3: three-way catalytic method, by single high-temperature heating to 150℃-450℃, through catalyst oxidation to decompose VOCs. The disadvantage of this method is high energy consumption, which needs to be heated to high temperature continuously, with large power consumption, the electric energy consumption is 1.5-2.5 kW·h / m 3 ; the removal rate of benzene series is low, the removal rate is <30%; the catalysis is not complete, part of the intermediate products, such as CO, aldehydes, etc., are not completely decomposed, causing secondary pollution.

[0048] In view of this, in order to solve the above problems, please refer to Figures 1-2 The present embodiment provides a moxibustion flue gas purification device 1, which comprises a first catalytic module 10, a second catalytic module 20 and a third catalytic module 30. The first catalytic module 10 is used for first catalytic treatment of moxibustion flue gas to obtain first intermediate flue gas, and the catalytic temperature of the first catalytic treatment is 50℃-100℃; the second catalytic module 20 is connected with the first catalytic module 10, and is used for second catalytic treatment of the first intermediate flue gas to obtain second intermediate flue gas, and the catalytic temperature of the second catalytic treatment is 120℃-450℃; the third catalytic module 30 is connected with the second catalytic module 20, and is used for third catalytic treatment of the second intermediate flue gas to obtain clean moxibustion flue gas, and the catalytic temperature of the third catalytic treatment is 80℃-150℃.

[0049] The untreated moxibustion flue gas first enters the first catalytic module 10, and the moxibustion flue gas is subjected to first catalytic treatment in the first catalytic module 10, thereby obtaining 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 is subjected to second catalytic treatment in the second catalytic module 20, thereby obtaining 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 is subjected to 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 shown as direction D. Figure 1

[0050] 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, including α-pinene and formaldehyde, to obtain the first intermediate flue gas.

[0051] 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, thereby obtaining the second intermediate flue gas.

[0052] 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, thereby obtaining the clean moxibustion flue gas.

[0053] 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, for example, 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. 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 part of the VOCs and part of the tar in the moxibustion flue gas, including α-pinene and formaldehyde. For example, in the process of the first catalytic treatment, C 10 H 16 (α-pinene) and O2 undergo low-temperature partial oxidation reaction to generate CO2 and H2O; HCHO (formaldehyde) and O2 undergo oxidation reaction to generate CO2 and H2O.

[0054] ​In the first catalytic treatment, the macromolecular VOCs in the moxibustion flue gas can be pre-decomposed, and the side chains are oxidatively cracked into small molecular aldehydes and ketones, with a macromolecular VOCs cracking rate of ≥40%, which can reduce the risk of carbon deposition in the subsequent catalytic module and reduce the subsequent treatment load.

[0055] The second catalytic treatment is also referred to as heating catalysis, and the second catalytic module 20 is provided with a second catalyst. Optionally, the catalytic temperature of the second catalytic treatment can be, for example, 120°C, or 140°C, or 160°C, or 180°C, or 200°C, or 225°C, or 250°C, or 275°C, or 300°C, or 325°C, or 350°C, or 375°C, or 400°C, or 425°C, or 450°C, etc. The second catalyst is a Pt-Pd / Al2O3 catalyst, and optionally, the noble metal loading in the second catalyst is 0.5 wt% to 1 wt%. The Pt-Pd / Al2O3 catalyst has the advantage of high-temperature sintering resistance. The second catalytic treatment can remove part of the benzene series and another part of the tar in the first intermediate flue gas. For example, in the process of the second catalytic treatment, C6H6 (benzene) reacts completely with O2 to generate CO2 and H2O.

[0056] In the process of the second catalytic treatment, harmful substances can be completely oxidized, and most of the benzene series, tar, and CO can be removed, and the benzene ring can be opened and oxidized to generate CO2 and H2O, with a benzene series removal rate of ≥95% and a CO conversion rate of ≥90%.

[0057] The third catalytic treatment is also referred to as waste heat catalysis, and the third catalytic module 30 is provided with a third catalyst. Optionally, the catalytic temperature of the third catalytic treatment can be, for example, 80°C, or 85°C, or 90°C, or 95°C, or 100°C, or 105°C, or 110°C, or 115°C, or 120°C, or 125°C, or 130°C, or 135°C, or 140°C, or 145°C, or 150°C, etc. The third catalyst is a CuO / ZSM-5 catalyst, and the molecular sieve (ZSM-5) is loaded with CuO, which can selectively catalyze the reduction of NOx. The third catalytic treatment can remove another part of the benzene series, CO, NOx, and remaining VOCs in the second intermediate flue gas. For example, in the process of the third catalytic treatment, CO and NO undergo selective catalytic reduction to generate CO2 and N2.

[0058] In the process of the third catalytic treatment, the residual pollutants can be deeply purified, with a NOx emission of ≤50 mg / m 3 , and a CO emission of ≤10 ppm.

[0059] Therefore, 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 embodiment divides the moxa smoke treatment process into three temperature intervals of the catalytic stage and configures different catalysts for various pollutants in the moxa smoke. Through energy cascade utilization and catalytic reaction optimization, the embodiment realizes the staged treatment of different pollutants, avoids the "treatment blind area" at a single catalytic temperature, such as the difficulty of decomposing benzene at low temperature and the increase in the generation of NOx at high temperature, and realizes efficient purification and energy saving.

[0060] In an embodiment, the moxa smoke purification equipment 1 comprises 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. In the heat exchanger 40, the second intermediate smoke of the third catalytic module 30 is used to heat the moxa smoke of the first catalytic module 10.

[0061] The heat exchange between the second intermediate smoke and the moxa smoke is used to heat the moxa smoke of the first catalytic module 10 and cool the second intermediate smoke of the third catalytic module 30, so as to realize heat recovery and reduce the energy consumption of the main heater 51 by 30%-50%. Moreover, the integration of the catalytic function in the heat exchanger 40 can reduce the volume of the moxa smoke purification equipment 1. In the heat exchanger 40, the waste heat recovery efficiency is greater than or equal to 60%, and the electric energy consumption of the moxa smoke purification equipment 1 is less than or equal to 1.0 kW·h / m 3 .

[0062] In summary, the moxa smoke purification equipment 1 provided by the embodiment can effectively remove different pollutants in the moxa smoke by three-stage catalysis of the moxa smoke, and can obtain clean moxa smoke, improve the purification efficiency, and reduce pollution. Moreover, the 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.

[0063] 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.

[0064] Please refer to Figures 1-2 In an embodiment, the first catalytic module 10 comprises a first pipeline 11 for accommodating the moxa smoke and the first intermediate smoke, and the third catalytic module 30 comprises a third pipeline 31 for accommodating the second intermediate smoke and the clean moxa smoke.

[0065] The heat exchanger 40 comprises a box 41, and the first pipe 11 and the third pipe 31 are arranged in the box 41; wherein the first pipe 11 and the third pipe 31 are arranged adjacently, or the first pipe 11 is sleeved on the third pipe 31, or the third pipe 31 is sleeved on the first pipe 11.

[0066] Specifically, the moxa smoke and the second intermediate smoke can exchange heat through the pipe wall. After heat exchange, the room temperature moxa smoke is heated to 50-100℃, and the heated moxa smoke can be subjected to the first catalytic treatment in the first pipe 11 to obtain the first intermediate smoke. The second intermediate smoke flowing from the second catalytic module 20 to the third pipe 31 has a high temperature, and after heat exchange, the second intermediate smoke is cooled to 80-150℃, and the cooled second intermediate smoke can be subjected to the third catalytic treatment in the third pipe 31 to obtain clean moxa smoke. The flow direction of the smoke in the first pipe 11 is shown as direction W1 in FIG. 6. Figure 2 The flow direction of the smoke in the third pipe 31 is shown as direction W2 in FIG. 7. Figure 2

[0067] Optionally, the material of the first pipe 11 and the third pipe 31 is selected from 316L stainless steel and aluminum alloy composite material.

[0068] 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.

[0069] When the first pipe 11 and the third pipe 31 are arranged adjacently, optionally, the outer pipe walls of the first pipe 11 and the third pipe 31 abut each other; optionally, a heat conduction component is arranged 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 conduction component.

[0070] When the first pipe 11 is sleeved on the third pipe 31, the moxa smoke and the first intermediate smoke in the first pipe 11 directly contact the outer circumferential wall of the third pipe 31, or the outer circumferential wall of the third pipe 31 is provided with a heat conduction component, and the moxa smoke and the first intermediate smoke in the first pipe 11 indirectly contact the third pipe 31 through the heat conduction component.

[0071] When the third pipe 31 is sleeved on the first pipe 11, the second intermediate smoke and the clean moxa smoke in the third pipe 31 directly contact the outer circumferential wall of the first pipe 11, or the outer circumferential wall of the first pipe 11 is provided with a heat conduction component, and the second intermediate smoke and the clean moxa smoke in the third pipe 31 indirectly contact the first pipe 11 through the heat conduction component.

[0072] ​Further, the box 41 comprises a first base plate 411 and a second base plate 412 arranged oppositely, the heat exchanger 40 further comprises a first flow guide 42 arranged on the first base plate 411 and a second flow guide 43 arranged on the second base plate 412, the first flow guide 42 and the second flow guide 43 are arranged alternately and spaced, and the first base plate 411, the second base plate 412, the first flow guide 42 and the second flow guide 43 form at least part of the third pipeline 31.

[0073] In the heat exchanger 40, the first pipeline 11 is arranged in the third pipeline 31, and at least part of the first pipeline 11 is arranged in a bent manner.

[0074] The first flow guide 42 is connected to the first base plate 411, and the first flow guide 42 and the second base plate 412 are arranged spacedly. The second flow guide 43 is connected to the second base plate 412, and the second flow guide 43 and the first base plate 411 are arranged spacedly. Optionally, the number of the first flow guide 42 is at least one, and the number of the second flow guide 43 is at least one. Wherein, the first flow guide 42 and the second flow guide 43 are arranged alternately and spacedly, which can also be understood as one first flow guide 42, one second flow guide 43, another first flow guide 42, another second flow guide 43 are arranged alternately and spacedly, and so on. For example, the first base plate 411, the second base plate 412, the first flow guide 42 and the second flow guide 43 form a third pipeline 31 in the shape of S.

[0075] In the heat exchanger 40, the third pipeline 31 is arranged around the first pipeline 11. Specifically, the box 41 further comprises a third smoke inlet and a third smoke outlet communicating with the third pipeline 31, the second intermediate smoke enters the third pipeline 31 from the third smoke inlet, and the clean moxa smoke flows out of the third pipeline 31 from the third smoke outlet. The first catalytic module 10 further comprises a first smoke inlet and a first smoke outlet communicating with the first pipeline 11, the moxa smoke enters the first pipeline 11 from the first smoke inlet, and the first intermediate smoke flows out of the first pipeline 11 from the first smoke outlet. The first smoke inlet penetrates through the box 41, and the first smoke outlet penetrates through the box 41, and the first smoke outlet communicates with the second pipeline of the second catalytic module 20.

[0076] Therefore, by optimizing the structure of the moxa smoke purification equipment 1, the heat exchanger 40 is designed to exchange heat between the second intermediate smoke and the moxa smoke, so as to heat the moxa smoke of the first catalytic module 10, and cool the second intermediate smoke of the third catalytic module 30, thereby reducing the energy consumption of the heater 51 and realizing waste heat recovery.

[0077] In an embodiment, the smoke inlet end of the first pipeline 11 is provided with heat-conducting fins, the first catalytic module 10 is provided with a first catalyst, the first catalyst is loaded on the heat-conducting fins, and the specific surface area of the first catalyst is greater than or equal to 150 m 2 / g.

[0078] The heat-conducting fins are arranged in the first pipeline 11. The heat-conducting fins are made of a heat-conducting material, and can increase the contact area of heat exchange between the second intermediate flue gas and the moxa smoke, and improve the heat exchange efficiency between the second intermediate flue gas and the moxa smoke.

[0079] The first catalyst can be a MnO2-CeO2 catalyst. The specific surface area of the first catalyst can 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 greater than or equal to 200 m 2 / g.

[0080] The embodiment limits the specific surface area of the first catalyst to be greater than or equal 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.

[0081] In addition, the heat-conducting fins are arranged at the smoke inlet end of the first pipeline 11, in other words, the heat-conducting fins are arranged at the portion of the first pipeline 11 close to the first smoke inlet, and the MnO2-CeO2 catalyst has the advantage of excellent low-temperature activity, so that such arrangement is conducive to further improving the utilization rate and catalytic performance of the first catalyst, and thus improving the purification effect of the first catalytic treatment.

[0082] The second catalytic module 20 includes a second pipeline communicating the first pipeline 11 and the third pipeline 31, the second pipeline is used to accommodate the first intermediate flue gas and the second intermediate flue gas, the second pipeline is provided with a honeycomb carrier, the second catalytic module 20 is provided with a second catalyst, the second catalyst is loaded on the honeycomb carrier, and the pore density of the honeycomb carrier is 350 cpsi~450 cpsi.

[0083] The second catalyst can be a Pt-Pd / Al2O3 catalyst. The pore density of the honeycomb carrier can be, for example, 350 cpsi, or 360 cpsi, or 370 cpsi, or 380 cpsi, or 390 cpsi, or 400 cpsi, or 410 cpsi, or 420 cpsi, or 430 cpsi, or 440 cpsi, or 450 cpsi, etc. Preferably, the pore density of the honeycomb carrier is 380 cpsi~420 cpsi.

[0084] The embodiment limits the pore density of the honeycomb carrier to 350 cpsi~450 cpsi, so that the honeycomb carrier can load more second catalyst, which is conducive to increasing the contact area between the first intermediate flue gas and the second catalyst, thereby improving the purification effect of the second catalytic treatment.

[0085] The third catalytic module 30 is provided with a third catalyst, which is coated on the smoke outlet end of the third pipeline 31.

[0086] The third catalyst is coated on the inner side wall of the third pipeline 31, and the third catalyst is coated on the part of the third pipeline 31 close to the third smoke outlet. When the second intermediate flue gas flows to the part of the third pipeline 31 close to the third smoke outlet, the second intermediate flue gas has completed most of the heat exchange with the moxibustion flue gas, at this time, the temperature of the second intermediate flue gas is reduced to 80℃~150℃; and considering that when the temperature is >180℃, side reactions are prone to occur, which aggravate the generation of NOx, so the embodiment coats the third catalyst on the smoke outlet end of the third pipeline 31 to inhibit the occurrence of side reactions and improve the purification effect of the third catalytic treatment.

[0087] Please refer to Figures 1-2 In an embodiment, the moxibustion flue gas purification device 1 further comprises a heater 51, a heat sink 52, and an exhaust fan 53. The heater 51 is arranged on one side of the second catalytic module 20 and is used to heat the first intermediate flue gas located in the second catalytic module 20; the heat sink 52 is arranged on one side of the third catalytic module 30 and is used to cool the clean moxibustion flue gas; and the exhaust fan 53 is communicated with the third catalytic module 30 and the outside, and is used to exhaust the clean moxibustion flue gas to the outside.

[0088] Optionally, the moxibustion flue gas purification device 1 further comprises a temperature sensor 54 for detecting the catalytic temperature of the second catalytic module 20. The temperature sensor 54 can be a thermocouple. The temperature sensor 54 is arranged adjacent to the heater 51.

[0089] The radiator 52 is used to cool the clean moxa smoke, so that the clean moxa smoke is reduced to room temperature, avoiding scalding the user. Specifically, the clean moxa smoke is cooled by the radiator 52, and then is sucked by the exhaust fan 53. The cooled clean moxa smoke is discharged to the outside under the action of the exhaust fan 53. Alternatively, the radiator 52 can be a cooling fan.

[0090] The moxa smoke purification equipment 1 can collect the heating temperature, the shell 61 temperature, the cooling fan current and the exhaust fan 53 current. Through optimization calculation, the heater 51, the exhaust fan 53 and the cooling fan are controlled, so that the clean smoke instrument achieves the goal of clean smoke removal and energy consumption reduction.

[0091] Further, the moxa smoke purification equipment 1 further includes a control system 55 electrically connected to the heater 51, the radiator 52, the exhaust fan 53 and the temperature sensor 54. The control system 55 can be a microcontroller unit (MCU).

[0092] Further, the temperature monitoring adopts a special temperature measuring chip, which can timely detect abnormal conditions such as thermocouple disconnection, short circuit and grounding, and ensure normal temperature measurement of the equipment.

[0093] Further, small resistance sampling is used to monitor the current of the cooling fan and the exhaust fan 53. The sampling signal is amplified by the MCU for current calculation. For the heater 51 and the exhaust fan 53, pulse width modulation (PWM) output control is used to adjust the heating power and the fan speed.

[0094] Further, the moxa smoke purification equipment 1 has an intelligent anti-burning function. When the MCU detects unexpected power failure or power outage, the intelligent lithium battery pack is started to supply power, the cooling fan and the exhaust fan 53 continue to run, and the first catalytic module 10, the second catalytic module 20 and the third catalytic module 30 are protected. The equipment stops only when the temperature of the first catalytic module 10, the second catalytic module 20 and the third catalytic module 30 reaches the safety line. The lithium battery pack has automatic charging and power management design to avoid long-term shallow charging and shallow discharging leading to battery failure.

[0095] Further, the moxa smoke purification equipment 1 has a perfect self-checking function for the core control system 55, which ensures the safe and stable operation of the control system 55. The control system 55 with self-checking function includes core devices such as random access memory (RAM), flash memory (FLASH), voice module, liquid crystal module and SD card. When an abnormality is detected, the output is locked, and the operator is reminded by liquid crystal or voice to handle in time.

[0096] Further, the moxibustion flue gas purification equipment 1 has a self-diagnosis function for the heating module. The heating power and temperature change curve characteristics after the heating is started are used to intelligently judge whether the heating module is normal. When an abnormality is detected, the output is blocked, and the operator is reminded in time through a liquid crystal or voice to handle it. The heating module includes a heater 51 and a heat exchanger 40.

[0097] Further, the moxibustion flue gas purification equipment 1 has a self-diagnosis function for the heating module. The heating power and temperature change curve characteristics after the heating is started are used to intelligently judge whether the heating module is normal. When an abnormality is detected, the output is blocked, and the operator is reminded in time through a liquid crystal or voice to handle it. The heating module includes a heater 51 and a heat exchanger 40.

[0098] Therefore, the present embodiment sets the heater 51, the radiator 52, and the exhaust fan 53, which can not only assist the second catalytic module 20 to complete the purification of the moxibustion flue gas, but also can cool the clean moxibustion flue gas and send it to the outside to avoid scalding the user.

[0099] In addition, the heater 51, the radiator 52, and the exhaust fan 53 can also be matched with various detectors, a control system 55 based on MCU, and other auxiliary components to use digital information technology to make the moxibustion flue gas purification equipment 1 have perfect self-checking function, anti-burning loss processing function, self-diagnosis function, etc., optimize the purification efficiency and energy consumption of the equipment, intelligently diagnose the operating condition of the equipment, perfect the measures to ensure the safe operation of the equipment, and design a friendly human-machine interface to make the equipment easy to operate.

[0100] Please refer to Figures 1-4 In an embodiment, the moxibustion flue gas purification equipment 1 further includes a shell 61, an exhaust assembly 62, and an adjusting 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 exhaust assembly 62 is arranged outside the shell 61 and includes a smoke pipe 621 and a suction cup 622. The smoke pipe 621 is connected to the exhaust fan 53 and the suction cup 622, and the clean moxibustion flue gas flows through the smoke pipe 621 and is discharged from the suction cup 622. One end of the adjusting arm 63 is fixed to the outside of the shell 61, and the other end is detachably connected to the suction cup 622. The adjusting arm 63 is used to move the suction cup 622 relative to the shell 61.

[0101] Optionally, the shell 61 is provided with at least one movable wheel for moving the shell 61. The movable wheel can be a rubber caster with a brake to prevent slipping. The shell 61 is provided with a display screen. The material of the shell 61 is selected from metal or alloy materials.

[0102] For example, the shell 61 is made of metal material, and the shell 61 is provided with four anti-skid rubber casters with brakes, which can rotate in all directions. The shell 61 is provided with a 7-inch touch screen control interface on the front surface.

[0103] Specifically, under the action of the exhaust fan 53, the clean moxa smoke flows from the third catalytic module 30 to the smoke pipe 621, and then flows to the suction cup 622 through the smoke pipe 621. Moreover, the suction cup 622 communicates the smoke pipe 621 with the outside.

[0104] Optionally, the adjusting arm 63 is a multi-joint pneumatic arm, which supports flexible adjustment in up, down, left, right and rotation. For example, the multi-joint pneumatic arm can move flexibly within a hemispherical range with a radius of 130 cm and a height of 50 cm-140 cm. The multi-joint pneumatic arms are connected to each other, or the multi-joint pneumatic arms and the suction cup 622 are connected to each other through fastening damping sheets to adjust the movement and positioning of the suspension arm. Optionally, the flexible suspension arm is provided with a quick-release handle at the end, so that different suction cups 622 can be conveniently replaced on the suspension arm. The flexible suspension arm can automatically adapt to the weight of the suction cup 622 of 2-8 kg.

[0105] Optionally, the number of smoke pipes 621 is at least one, the number of suction cups 622 is at least one, and the number of adjusting arms 63 is at least one. For example, the shell 61 is provided with two smoke pipes 621, each smoke pipe 621 is provided with one suction cup 622, and the shell 61 is further provided with two adjusting arms 63, each adjusting arm 63 is connected to one suction cup 622. Optionally, according to different moxa therapy, the suction cup 622 can be selected in different shapes or sizes.

[0106] Therefore, the present embodiment cooperates the shell 61, the smoke exhaust assembly 62 and the adjusting arm 63 to facilitate movement, and can cooperate with various moxa therapy, thereby increasing the application range of the moxa smoke purification equipment 1.

[0107] For reference Figures 1-5 The present application also provides a moxa smoke purification method, which comprises:

[0108] S100, performing first catalytic treatment on the moxa smoke to obtain first intermediate smoke, and the catalytic temperature of the first catalytic treatment is 50-100℃.

[0109] S200, performing second catalytic treatment on the first intermediate smoke to obtain second intermediate smoke, and the catalytic temperature of the second catalytic treatment is 120-450℃.

[0110] S300, performing third catalytic treatment on the second intermediate smoke to obtain clean moxa smoke, and the catalytic temperature of the third catalytic treatment is 80-150℃.

[0111] Specifically, in the first catalytic treatment, the moxa smoke is treated by a MnO2-CeO2 catalyst to remove part of VOCs, including a-pinene and formaldehyde, and part of tar, to obtain the first intermediate smoke.

[0112] In the second catalytic treatment, the first intermediate smoke is treated by a Pt-Pd / Al2O3 catalyst to remove part of benzene series and another part of tar, to obtain the second intermediate smoke.

[0113] In the third catalytic treatment, the second intermediate smoke is treated by a CuO / ZSM-5 catalyst to remove another part of benzene series, CO, NOx, and remaining VOCs, to obtain the clean moxa smoke.

[0114] Optionally, in the first catalytic treatment and the third catalytic treatment, the second intermediate smoke in the third catalytic module 30 is used to heat the moxa smoke in the first catalytic module 10.

[0115] Further, in the heat exchanger 40, the second intermediate smoke and the moxa smoke are controlled to exchange heat, so that the moxa smoke is heated and the second intermediate smoke is cooled.

[0116] The moxa smoke purification method provided by the present application can be implemented by using the moxa smoke purification device 1 provided by the present application, or can be implemented by using other moxa smoke purification devices 1.

[0117] The first catalytic treatment, the second catalytic treatment, and the third catalytic treatment will be described in detail in the above description of the present application, and will not be described here.

[0118] For different pollutants, the moxa smoke purification device 1 is affected by the chemical bond energy difference of the pollutants, the catalytic activity temperature difference, and the side reaction inhibition. The present embodiment divides the moxa smoke treatment process into three temperature interval catalytic stages for various pollutants in the 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 the difficulty of decomposing benzene at low temperature and the increase of NOx generation at high temperature, and realize efficient purification and energy saving.

[0119] In summary, the moxibustion smoke purification method provided by the embodiment can effectively remove different pollutants in moxibustion smoke by performing three-stage catalysis on the moxibustion smoke and sequentially performing catalytic treatment at low temperature, high temperature and medium temperature, so that clean moxibustion smoke is obtained, the purification efficiency is improved, and pollution is reduced. In addition, the second intermediate smoke is used to preheat the newly entered moxibustion smoke, so that the energy consumption of the heater 51 is reduced, and waste heat is recycled.

[0120] In addition, by adopting 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 is improved by 2-3 times, and the cost is reduced.

[0121] In order to make the purpose and advantages of the present application more clear, the effect of the moxibustion smoke purification method of the present application will be further described in detail below in combination with specific embodiments.

[0122] Comparative example: single heating catalysis, catalytic temperature is 450℃, and the catalyst is a noble metal catalyst.

[0123] Embodiment: 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 moxibustion smoke located in the first catalytic module.

[0124] In the comparative example and the embodiment, 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:

[0125] Table 1: Result parameter table of moxibustion smoke purification method of comparative example and embodiment

[0126]

[0127] In summary, as shown in Table 1, by using the moxibustion flue gas purification method provided in the present application, through three-stage catalysis of the moxibustion flue gas, catalytic treatment is carried out in low temperature-high temperature-medium temperature in turn, different pollutants in the moxibustion flue gas can be effectively removed, clean moxibustion flue gas is obtained, the purification efficiency is improved, the removal rate of PM2.5 is as high as 98%, the removal rate of benzene is as high as 97%, and pollution is reduced; and the present application also uses the second intermediate flue gas to preheat the newly entered moxibustion flue gas, realizes waste heat recovery and utilization, reduces the energy consumption of the heater, saves 1 times of energy consumption compared with the comparative example, and saves energy.

[0128] Unless otherwise stated or contradictory, the terms or phrases used in the present application have the following meanings:

[0129] In the present application, "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0130] In the present application, "one or more" refers to any one, any two or any two or more of the listed items. Among them, "several" refers to any two or more.

[0131] In the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0132] In the present application, unless otherwise stated or limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0133] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0134] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A moxibustion smoke purification device, characterized in that, The moxibustion smoke purification equipment includes: The first catalytic module is used to perform a first catalytic treatment on the moxibustion smoke to obtain a first intermediate smoke, wherein the catalytic temperature of the first catalytic treatment is 50℃~100℃; The second catalytic module is connected to the first catalytic module and is used to perform a second catalytic treatment on the first intermediate flue gas to obtain a second intermediate flue gas. The catalytic temperature of the second catalytic treatment is 120℃~450℃. The third catalytic module, connected to the second catalytic module, 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℃~150℃. The first catalytic module is equipped with a MnO2-CeO2 catalyst; in the first catalytic treatment, the MnO2-CeO2 catalyst is used to treat the moxibustion smoke to remove some of the VOCs and some of the tar in the moxibustion smoke to obtain the first intermediate smoke, wherein the partial VOCs include α-pinene and formaldehyde; The second catalytic module is equipped 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 some benzene compounds and another part of tar from the first intermediate flue gas to obtain the second intermediate flue gas; The third catalytic module is equipped 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 compounds, CO, NOx and the remaining VOCs in the second intermediate flue gas, so as to obtain the clean moxibustion smoke.

2. The moxibustion smoke purification device as described in claim 1, characterized in that, The moxibustion smoke purification device includes a heat exchanger, and at least a portion of the first catalytic module and at least a portion of the third catalytic module are disposed within the heat exchanger. Specifically, within the heat exchanger, the second intermediate flue gas located in the third catalytic module is used to heat the moxibustion smoke located in the first catalytic module.

3. The moxibustion smoke purification device as described in claim 2, characterized in that, The first catalytic module includes a first pipe for containing the moxibustion smoke and the first intermediate smoke, and the third catalytic module includes a third pipe for containing the second intermediate smoke and the cleaned moxibustion smoke. The heat exchanger includes a housing, and the first pipe and the third pipe are disposed within the housing; wherein the first pipe and the third pipe are disposed adjacent to each other, or the first pipe is sleeved on the third pipe, or the third pipe is sleeved on the first pipe.

4. The moxibustion smoke purification device as described in claim 3, characterized in that, The housing includes a first substrate and a second substrate disposed opposite to each other. The heat exchanger further includes a first flow guide portion disposed on the first substrate and a second flow guide portion disposed on the second substrate. The first flow guide portion and the second flow guide portion are arranged alternately at intervals. The first substrate, the second substrate, the first flow guide portion, and the second flow guide portion surround and form at least part of the third pipe. Within the heat exchanger, the first pipe is disposed within the third pipe, and at least a portion of the first pipe is bent and extended.

5. The moxibustion smoke purification device as described in claim 3, characterized in that, The first duct has heat-conducting fins at its flue gas inlet end, and the first catalytic module has a first catalyst loaded on the heat-conducting fins. The specific surface area of ​​the first catalyst is ≥150 m². 2 / g; The second catalytic module includes a second pipe connecting the first pipe and the third pipe. The second pipe is used to contain the first intermediate flue gas and the second intermediate flue gas. A honeycomb carrier is provided inside the second pipe. The second catalytic module is provided with a second catalyst. The second catalyst is loaded on the honeycomb carrier. The pore density of the honeycomb carrier is 350 cpsi to 450 cpsi. The third catalytic module is equipped with a third catalyst, which is coated on the smoke outlet end of the third pipe.

6. The moxibustion smoke purification device as described in claim 1, characterized in that, The moxibustion smoke purification equipment also includes: A heater, located on one side of the second catalytic module, is used to heat the first intermediate flue gas located in the second catalytic module; A radiator is located on one side of the third catalytic module and is used to cool the clean moxibustion smoke. An exhaust fan connects the third catalytic module to the outside environment to expel the clean moxibustion smoke.

7. The moxibustion smoke purification device as described in claim 6, characterized in that, The moxibustion smoke purification equipment also includes: The housing has a receiving space, in which the first catalytic module, the second catalytic module, the third catalytic module, the heater, the radiator, and the exhaust fan are all disposed; A smoke exhaust assembly is disposed outside the housing. The smoke exhaust assembly includes a smoke pipe and a suction cup. The smoke pipe connects the exhaust fan and the suction cup. The clean moxibustion smoke flows through the smoke pipe and is discharged through the suction cup. An adjusting arm is fixed at one end to the outside of the housing and detachably connected to the suction cup at the other end. The adjusting arm is used to move the suction cup relative to the housing.

8. A method for purifying moxibustion smoke, characterized in that, The method for purifying moxibustion smoke includes: The moxibustion smoke is subjected to a first catalytic treatment to obtain a first intermediate smoke, wherein the catalytic temperature of the first catalytic treatment is 50℃~100℃; The first intermediate flue gas is subjected to a second catalytic treatment to obtain a second intermediate flue gas, wherein the catalytic temperature of the second catalytic treatment is 120℃~450℃; The second intermediate flue gas is subjected to a third catalytic treatment to obtain clean moxibustion flue gas. The catalytic temperature of the third catalytic treatment is 80℃~150℃. In the first catalytic treatment, the moxibustion smoke is treated with a MnO2-CeO2 catalyst to remove some of the VOCs and some of the tar in the moxibustion smoke, and the first intermediate smoke is obtained. The VOCs include α-pinene and formaldehyde. In the second catalytic treatment, the first intermediate flue gas is treated with a Pt-Pd / Al2O3 catalyst to remove some benzene compounds and another part of tar from the first intermediate flue gas, thereby obtaining 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 compounds, CO, NOx, and the remaining VOCs from the second intermediate flue gas, thereby obtaining the clean moxibustion smoke.

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