Device and method for purifying industrial waste gas through low-temperature plasma concerted catalysis

Abstract

The invention relates to the technical field of atmospheric environmental protection, and discloses a device and method for purifying industrial waste gas through low-temperature plasma concerted catalysis, the device comprises a gas collecting hood, a pretreatment assembly and a discharge assembly, the pretreatment assembly is provided with a low-temperature plasma purification assembly, the low-temperature plasma purification assembly is provided with a deep gas adsorption catalysis assembly, and the deep gas adsorption catalysis assembly is provided with a deep gas adsorption catalysis assembly. The low-temperature plasma purification assembly comprises a filter, and one end of the filter fixedly communicates with a purification chamber. According to the device and the method for purifying the industrial waste gas through the low-temperature plasma concerted catalysis, impurities and particulate matters of emphysema are removed through the filter, then the electrode bar is communicated with an external power supply to generate high-voltage discharge for generating plasmas, the plasmas and waste gas in the purification chamber are subjected to a physical and chemical reaction, pollutants in the waste gas are converted into harmless substances, and the purpose of purifying the industrial waste gas is achieved. Meanwhile, the circulating water pump is started, cold water in the water tank is poured into the cooling pipe, the purification chamber is cooled, and the purpose of low-temperature plasma purification of the industrial waste gas is achieved.

Description

Technical Field

[0001] The present invention relates to the field of atmospheric environmental protection technology, and in particular to a device and method for purifying industrial waste gas by using low-temperature plasma in a coordinated catalytic manner. Background Art

[0002] Air pollution refers to the phenomenon that certain substances produced by human activities or natural processes (which may include sulfur dioxide, nitrogen oxides, volatile organic compounds, particulate matter, etc.) enter the atmosphere and reach sufficient concentration and duration, causing adverse effects on human health, plant and animal growth, atmospheric visibility and climate. The goal of air environmental protection can be achieved by reducing pollution emissions, strengthening pollution control and raising public awareness of environmental protection.

[0003] The exhaust gas purification device usually includes a gas collection system, a pretreatment system, a low-temperature plasma purification system, a deep gas adsorption catalytic system and an emission system. The deep gas adsorption catalytic system is composed of a box and an adsorption unit filled in the box. A catalyst can be added to the adsorption unit to further remove odorous gases and other pollutants in the exhaust gas and improve the purification effect. If the adsorption unit and the catalyst are not replaced regularly, the adsorption efficiency will be reduced and the catalyst will be deactivated, thereby affecting the purification effect of industrial exhaust gas. Therefore, a device and method for purifying industrial exhaust gas by low-temperature plasma coordinated catalysis are proposed to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for purifying industrial waste gas by low-temperature plasma coordinated catalysis, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for purifying industrial waste gas by low-temperature plasma coordinated catalysis, comprising a gas collecting hood, a pretreatment component and an emission component, wherein the pretreatment component is provided with a low-temperature plasma purification component, and the low-temperature plasma purification component is provided with a deep gas adsorption catalytic component;

[0006] The low-temperature plasma purification component includes a filter, one end of the filter is fixedly connected to a purification chamber, an electrode rod is inserted into the purification chamber, a cooling pipe is wound around the outside of the purification chamber, a water tank is provided on one side of the purification chamber, and a circulating pump is fixedly connected to the water tank;

[0007] The deep gas adsorption catalytic assembly includes a catalytic chamber, a mounting frame is placed in the catalytic chamber, an adsorbent is installed in the mounting frame, a sealing block is fixedly connected to the front side of the mounting frame, a mounting box is fixedly connected to the bottom of the catalytic chamber, a threaded rod is rotatably connected to the mounting box, a threaded sleeve is threadedly connected to the outer side of the threaded rod, a rack plate is fixedly connected to one side of the threaded sleeve, a gear is rotatably connected to the inner bottom wall of the mounting box, a T-shaped block is fixedly connected to the top of the gear, a moving frame is slidably connected to the inside of the mounting box, a connecting plate is fixedly connected to the top of the moving frame, an insert block is fixedly connected to one side of the connecting plate, a transmission wheel is fixedly connected to the outer side of the threaded rod, and a belt is transmission-connected to the transmission wheel.

[0008] Preferably, the pretreatment component includes a spray tower body, the air inlet end of the spray tower body is fixedly connected to an air inlet pipe, the air inlet pipe is fixedly connected to an air collecting hood, the air outlet end of the spray tower body is fixedly connected to an air outlet pipe, and the other end of the air outlet pipe is connected to a filter.

[0009] Preferably, the emission assembly comprises a fan, the fan is fixedly connected to the catalyst chamber, and the other end of the fan is fixedly connected to an exhaust pipe.

[0010] Preferably, one end of the cooling pipe is connected to the output end of the circulation pump, the other end of the cooling pipe is connected to the water tank, and the input end of the circulation pump is connected to the water tank.

[0011] Preferably, the catalyst chamber is communicated with the purification chamber, the number of the mounting frames is three and they are evenly spaced and distributed in the catalyst chamber, and the catalyst is added into the catalyst chamber by being supported on an adsorbent.

[0012] Preferably, two threaded rods are provided in the installation box and on both sides of the installation frame, the threaded sleeve is slidably connected to the inner bottom wall of the installation box, and the rack plate is meshed with the gear.

[0013] Preferably, the movable frame is slidably connected between the front and rear sides of the inner wall of the installation box, and a T-shaped groove adapted to the moving track of the T-shaped block is provided at the bottom of the movable frame.

[0014] Preferably, slots are provided on both the left and right sides of the installation frame, and the size of the slots is adapted to the plug-in block. The front side of the threaded rod located on the left side of the installation frame extends outside the installation box and is fixedly connected to a handle, and a positioning rod is inserted on the handle to connect to the installation box.

[0015] Method for using a low-temperature plasma synergistic catalytic purification device for industrial waste gas, S1: extracting industrial waste gas from a gas collection hood into a pretreatment component;

[0016] S2: Pre-treat the waste gas through the spray tower body in the pre-treatment component to remove dust and some pollutants in the waste gas;

[0017] S3: The pre-treated exhaust gas passes through a filter to remove impurities and particulate matter in the exhaust gas, and then is connected to a power source through an electrode rod to generate a high voltage discharge to generate plasma, which reacts physically and chemically with the exhaust gas in the purification chamber to convert pollutants into harmless substances. At the same time, a circulating pump fills the cold water in the water tank into the cooling pipe to cool the purification chamber;

[0018] S4: After the low-temperature plasma purification treatment is completed, the odorous gas and other pollutants in the exhaust gas are further removed through the catalyst in the catalytic chamber;

[0019] S5: The catalytically treated gas is extracted through a fan and discharged through an exhaust pipe.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] First, the present invention removes impurities and particulate matter from the exhaust gas through a filter, and then connects the electrode rod to an external power source to generate a high-voltage discharge to generate plasma, which reacts physically and chemically with the exhaust gas in the purification room to convert pollutants in the exhaust gas into harmless substances. At the same time, the circulating water pump is started to fill the cold water in the water tank into the cooling pipe to cool the purification room, thereby achieving the purpose of low-temperature plasma purification of industrial exhaust gas.

[0022] Second, the present invention rotates the handle on the threaded rod, and under the transmission of the belt, the threaded rods on both sides of the installation frame drive the threaded sleeve and the rack plate to move in the same direction, so that the gears on both sides of the installation frame rotate in opposite directions. Under the transmission of the T-block, the moving frames move back to each other, and under the drive of the connecting plate, the plug block is withdrawn from the installation frame, and the installation frame can be removed forward, so that the catalyst carried on the adsorbent can be replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of another axial side of the present invention;

[0025] Figure 3 This is an exploded view of the low-temperature plasma purification component of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the installation frame of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the catalyst chamber of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal structure of the installation box of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the moving frame of the present invention;

[0030] Figure 8 It is a flow chart of the present invention.

[0031] Wherein: 1. gas collecting hood; 2. pretreatment component; 201. air inlet pipe; 202. air outlet pipe; 3. low temperature plasma purification component; 301. filter; 302. purification chamber; 303. electrode rod; 304. cooling pipe; 305. water tank; 306. circulation pump; 4. deep gas adsorption catalytic component; 401. catalytic chamber; 402. mounting frame; 403. adsorbent; 404. sealing block; 405. mounting box; 406. threaded rod; 407. threaded sleeve; 408. rack plate; 409. gear; 410. T-shaped block; 411. moving frame; 412. connecting plate; 413. plug-in block; 414. transmission wheel; 415. belt; 5. discharge component; 501. fan; 502. exhaust pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention provides the following technical solutions:

[0034] Embodiment 1

[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , a device for purifying industrial waste gas by low-temperature plasma coordinated catalysis, comprising a gas collecting hood 1, a pretreatment component 2 and an emission component 5, wherein the pretreatment component 2 is provided with a low-temperature plasma purification component 3, and the low-temperature plasma purification component 3 is provided with a deep gas adsorption catalytic component 4;

[0036] The low-temperature plasma purification component 3 includes a filter 301, one end of the filter 301 is fixedly connected to a purification chamber 302, an electrode rod 303 is inserted into the purification chamber 302, a cooling pipe 304 is wound around the outside of the purification chamber 302, a water tank 305 is provided on one side of the purification chamber 302, and a circulation pump 306 is fixedly connected to the water tank 305;

[0037] The deep gas adsorption catalytic assembly 4 includes a catalytic chamber 401, in which a mounting frame 402 is placed, in which an adsorbent 403 is installed, a sealing block 404 is fixedly connected to the front side of the mounting frame 402, a mounting box 405 is fixedly connected to the bottom of the catalytic chamber 401, a threaded rod 406 is rotatably connected to the mounting box 405, a threaded sleeve 407 is threadedly connected to the outer side of the threaded rod 406, a rack plate 408 is fixedly connected to one side of the threaded sleeve 407, a gear 409 is rotatably connected to the inner bottom wall of the mounting box 405, a T-shaped block 410 is fixedly connected to the top of the gear 409, a moving frame 411 is slidably connected to the inside of the mounting box 405, a connecting plate 412 is fixedly connected to the top of the moving frame 411, a plug block 413 is fixedly connected to one side of the connecting plate 412, a transmission wheel 414 is fixedly connected to the outer side of the threaded rod 406, and a belt 415 is transmission-connected to the transmission wheel 414.

[0038] The pretreatment component 2 includes a spray tower body, the air inlet end of the spray tower body is fixedly connected to an air inlet pipe 201, the air inlet pipe 201 is fixedly connected to the air collecting hood 1, and the air outlet end of the spray tower body is fixedly connected to an air outlet pipe 202, and the other end of the air outlet pipe 202 is connected to the filter 301.

[0039] Through the setting of the pretreatment component 2, especially the application of the spray tower body, the collected industrial waste gas can be preliminarily treated, such as removing particulate matter, cooling or adjusting the humidity of the waste gas, etc., to provide more favorable conditions for the subsequent low-temperature plasma purification process. The air inlet pipe 201 and the air outlet pipe 202 ensure the smooth flow of the waste gas in the pretreatment component, thereby enhancing the continuity and efficiency of the entire purification system.

[0040] The exhaust assembly 5 includes a fan 501 , which is fixedly connected to the catalyst chamber 401 , and the other end of the fan 501 is fixedly connected to an exhaust pipe 502 .

[0041] The exhaust component 5 is powered by the fan 501 to ensure that the clean air after deep gas adsorption catalytic treatment can be discharged smoothly. The exhaust pipe 502 serves as the final exhaust channel to ensure the safe and compliant discharge of the purified gas, thereby improving the practicality and environmental performance of the entire purification system.

[0042] One end of the cooling pipe 304 is connected to the output end of the circulation pump 306 , the other end of the cooling pipe 304 is connected to the water tank 305 , and the input end of the circulation pump 306 is connected to the water tank 305 .

[0043] The cooling pipe 304, the circulating pump 306 and the water tank 305 form a cooling unit, which effectively reduces the heat generated by the purification chamber 302 and the electrode rod 303 during operation, ensures the stable operation of the low-temperature plasma technology, extends the service life of the equipment, and improves the purification efficiency.

[0044] The catalyst chamber 401 is connected to the purification chamber 302 . There are three mounting frames 402 , which are evenly spaced in the catalyst chamber 401 . The catalyst is added to the catalyst chamber 401 by being supported on the adsorbent 403 .

[0045] The connection design between the catalyst chamber 401 and the purification chamber 302, as well as the adsorbent 403 loaded in multiple equally spaced installation frames 402, not only increases the contact area between the exhaust gas and the catalyst, but also promotes the deep adsorption and catalytic conversion of pollutants in the exhaust gas, thereby improving the purification effect and enhancing the processing capacity of the system.

[0046] Two threaded rods 406 are disposed in the installation box 405 and on both sides of the installation frame 402 . The threaded sleeve 407 is slidably connected to the inner bottom wall of the installation box 405 . The rack plate 408 is meshed with the gear 409 .

[0047] By using the threaded rod 406, threaded sleeve 407, rack plate 408 and gear 409 in the installation box 405, the installation frame 402 and the adsorbent 403 therein can be easily replaced or adjusted, thereby improving the maintainability and flexibility of the equipment and reducing the operating cost.

[0048] The moving frame 411 is slidably connected between the front and rear sides of the inner wall of the installation box 405 , and a T-shaped groove matching the moving track of the T-shaped block 410 is provided at the bottom of the moving frame 411 .

[0049] The matching design of the moving frame 411, the T-block 410 and the T-slot ensures that the gear 409 can drive the moving frame 411 to move smoothly when rotating, and then the mounting frame 402 can be locked or released through the plug block 413, thereby enhancing the stability of the structure and the reliability of operation.

[0050] Slots are provided on both sides of the installation frame 402, and the size of the slots is adapted to the plug block 413. The front side of the threaded rod 406 located on the left side of the installation frame 402 extends to the outside of the installation box 405 and is fixedly connected to a handle, on which a positioning rod is inserted that is plugged into the installation box 405.

[0051] The adaption design of the slots on both sides of the mounting frame 402 and the plug blocks 413 provides a simple and effective fixing method, which not only ensures the stable installation of the mounting frame 402 in the catalyst chamber 401, but also facilitates quick replacement through the operation of the moving frame 411. The handle set at the front end of the threaded rod 406 on the left side of the mounting frame 402 facilitates the operator to manually rotate the threaded rod 406, and the positioning rod plays a safety locking role to prevent the threaded rod 406 from accidentally rotating in the non-operating state, thereby improving the safety of the equipment and the stability of operation.

[0052] Through the above technical solution, by rotating the handle on the threaded rod 406, under the transmission of the belt 415, the threaded rod 406 on both sides of the installation frame 402 drives the threaded sleeve 407 and the rack plate 408 to move in the same direction, so that the gears 409 on both sides of the installation frame 402 rotate in opposite directions, under the transmission of the T-block 410, the moving frame 411 moves in opposite directions, and under the drive of the connecting plate 412, the plug block 413 is withdrawn from the installation frame 402, and the installation frame 402 can be removed forward, so that the catalyst carried on the adsorbent 403 can be replaced in time.

[0053] Embodiment 2

[0054] See also Figure 8 , Method for using a low-temperature plasma synergistic catalytic purification device for industrial waste gas, S1: pumping industrial waste gas from a gas collecting hood 1 into a pretreatment component 2;

[0055] S2: pre-treating the waste gas through the spray tower body in the pre-treatment component 2 to remove dust and some pollutants in the waste gas;

[0056] S3: The pre-treated waste gas passes through the filter 301 to remove impurities and particulate matter in the waste gas, and then is connected to the power supply through the electrode rod 303 to generate a high voltage discharge to generate plasma, which reacts physically and chemically with the waste gas in the purification chamber 301 to convert pollutants into harmless substances. At the same time, the circulation pump 306 pours cold water in the water tank 305 into the cooling pipe 304 to cool the purification chamber 302;

[0057] S4: After the low-temperature plasma purification treatment is completed, the odorous gas and other pollutants in the exhaust gas are further removed by the catalyst in the catalyst chamber 401;

[0058] S5: The gas after catalytic treatment is extracted through the fan 501 and discharged through the exhaust pipe 502.

[0059] Through the above technical scheme, the industrial waste gas is collected into the spray tower body through the gas collecting hood 1, and the waste gas is pre-treated through the spray tower body to remove dust and some pollutants in the waste gas, and then the impurities and particulate matter of emphysema are removed through the filter 301, and then the electrode rod 303 is connected to the external power supply to generate a high voltage discharge, which is used to generate plasma, and the waste gas in the purification chamber 301 undergoes a physical and chemical reaction to convert the pollutants in the waste gas into harmless substances. At the same time, the circulating water pump 306 is started, and the cold water in the water tank 305 is poured into the cooling pipe 304 to cool the purification chamber 302, so as to achieve the purpose of low-temperature plasma purification of industrial waste gas.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for purifying industrial waste gas by low-temperature plasma synergistic catalysis, comprising a gas collecting hood (1), a pretreatment component (2) and an emission component (5), characterized in that: The pretreatment component (2) is provided with a low-temperature plasma purification component (3), and the low-temperature plasma purification component (3) is provided with a deep gas adsorption catalytic component (4); The low-temperature plasma purification component (3) comprises a filter (301), one end of the filter (301) is fixedly connected to a purification chamber (302), an electrode rod (303) is inserted into the purification chamber (302), a cooling pipe (304) is wound around the outside of the purification chamber (302), a water tank (305) is provided on one side of the purification chamber (302), and a circulation pump (306) is fixedly connected to the water tank (305); The deep gas adsorption catalytic assembly (4) comprises a catalytic chamber (401), a mounting frame (402) is placed in the catalytic chamber (401), an adsorbent (403) is installed in the mounting frame (402), a sealing block (404) is fixedly connected to the front side of the mounting frame (402), a mounting box (405) is fixedly connected to the bottom of the catalytic chamber (401), a threaded rod (406) is rotatably connected to the mounting box (405), the outer side of the threaded rod (406) is threadedly connected to a threaded sleeve (407), and one side of the threaded sleeve (407) is fixedly connected to the mounting box (405). A rack plate (408) is connected, the inner bottom wall of the installation box (405) is rotatably connected to a gear (409), the top of the gear (409) is fixedly connected to a T-shaped block (410), the interior of the installation box (405) is slidably connected to a moving frame (411), the top of the moving frame (411) is fixedly connected to a connecting plate (412), one side of the connecting plate (412) is fixedly connected to an insert block (413), the outer side of the threaded rod (406) is fixedly connected to a transmission wheel (414), and the transmission wheel (414) is transmission-connected to a belt (415).

2. The device for purifying industrial waste gas by low-temperature plasma coordinated catalysis according to claim 1 is characterized in that: The pretreatment component (2) comprises a spray tower body, an air inlet end of the spray tower body is fixedly connected to an air inlet pipe (201), the air inlet pipe (201) is fixedly connected to the air collecting hood (1), and an air outlet end of the spray tower body is fixedly connected to an air outlet pipe (202), the other end of the air outlet pipe (202) is connected to a filter (301).

3. The device for purifying industrial waste gas by low-temperature plasma synergistic catalysis according to claim 1 is characterized in that: The exhaust assembly (5) comprises a fan (501), the fan (501) is fixedly connected to the catalyst chamber (401), and the other end of the fan (501) is fixedly connected to an exhaust pipe (502).

4. The device for purifying industrial waste gas by low-temperature plasma coordinated catalysis according to claim 1 is characterized in that: One end of the cooling pipe (304) is connected to the output end of the circulation pump (306), the other end of the cooling pipe (304) is connected to the water tank (305), and the input end of the circulation pump (306) is connected to the water tank (305).

5. The device for purifying industrial waste gas by low-temperature plasma synergistic catalysis according to claim 1 is characterized in that: The catalyst chamber (401) is connected to the purification chamber (302), the number of the mounting frames (402) is three and they are evenly spaced in the catalyst chamber (401), and the catalyst is added to the catalyst chamber (401) by being supported on an adsorbent (403).

6. The low-temperature plasma synergistic catalytic purification device for industrial waste gas according to claim 1 is characterized in that: Two threaded rods (406) are provided in the installation box (405) and on both sides of the installation frame (402); the threaded sleeve (407) is slidably connected to the inner bottom wall of the installation box (405); and the rack plate (408) is meshed with the gear (409).

7. The device for purifying industrial waste gas by low-temperature plasma coordinated catalysis according to claim 1 is characterized in that: The movable frame (411) is slidably connected between the front and rear sides of the inner wall of the installation box (405), and a T-shaped groove matching the moving track of the T-shaped block (410) is provided at the bottom of the movable frame (411).

8. The low-temperature plasma synergistic catalytic purification device for industrial waste gas according to claim 1 is characterized in that: The left and right sides of the installation frame (402) are provided with slots, the size of which is adapted to the plug block (413). The front side of the threaded rod (406) located on the left side of the installation frame (402) extends outside the installation box (405) and is fixedly connected to a handle, and a positioning rod is inserted into the handle to be plugged into the installation box (405).

9. The method for using the low-temperature plasma synergistic catalytic purification device for industrial waste gas according to claims 1-8, characterized in that: S1: The industrial waste gas is drawn from the gas collecting hood (1) into the pretreatment component (2); S2: pre-treating the waste gas through the spray tower body in the pre-treatment component (2) to remove dust and some pollutants in the waste gas; S3: The pre-treated waste gas passes through a filter (301) to remove impurities and particulate matter in the waste gas, and then is connected to a power source through an electrode rod (303) to generate a high voltage discharge for generating plasma, which reacts physically and chemically with the waste gas in the purification chamber 301 to convert pollutants into harmless substances. At the same time, a circulating pump (306) pours cold water in a water tank (305) into a cooling pipe (304) to cool the purification chamber (302); S4: After the low-temperature plasma purification treatment is completed, the odorous gas and other pollutants in the exhaust gas are further removed by the catalyst in the catalyst chamber (401); S5: The gas after catalytic treatment is extracted through the fan (501) and discharged through the exhaust pipe (502).

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