Purifying device for photocatalytic microorganism organic waste gas

Abstract

The invention discloses a photocatalytic microorganism organic waste gas purification device, and relates to the technical field of tail gas treatment. A photocatalysis device is arranged on the front side of the pretreatment assembly; the pretreatment assembly and the photocatalysis device are fixedly connected with the controller through cables, waste gas is primarily treated multiple times through the multiple sets of waste gas adsorption beds, the bag-type dust collector and the water film dust collector, and then the waste gas passes through the pre-arrangement assembly and the reaction box; a large number of active free radicals such as hydroxyl free radicals are generated and can efficiently decompose organic pollutants in waste gas, and electrons are forced to react with the filler by adopting an external bias voltage method to generate holes to chemically react with the waste gas on the surface of the catalyst, so that the photocatalytic reaction effect is further enhanced; and finally, the waste gas is discharged after being fully treated through a drying air pipe, and an efficient light source system is established and system integration and automatic control are enhanced by optimizing the performance of the nano photocatalyst.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas treatment, in particular to a device for purifying organic waste gas using photocatalytic microorganisms. Background Art

[0002] The photocatalytic microbial organic waste gas purification device is a new type of environmental protection technology, mainly used to treat harmful organic waste gas emitted by industry; the device combines the two major technologies of photocatalysis and microbial degradation, aiming to more effectively remove harmful substances in industrial waste gas and reduce potential threats to the environment and human health.

[0003] Existing purification technologies do not have any pretreatment at the front end, and most of them are directly treated by activated carbon adsorption. The activated carbon is easily saturated, which may lead to incomplete removal. Existing organic waste gas purification technologies all have their own advantages and disadvantages, and it is difficult to ensure purification efficiency. Therefore, cleverly combining multiple technologies and complementing the advantages and disadvantages of various treatment methods will be an efficient and widely used treatment method. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a photocatalytic microbial organic waste gas purification device.

[0005] The present invention is implemented by constructing a photocatalytic microbial organic waste gas purification device, which includes a pretreatment component; a photocatalytic device is arranged on the front side of the pretreatment component; the pretreatment component and the photocatalytic device are both fixedly connected to a controller through a cable; The photocatalytic device includes a pre-assembly fixedly arranged on the front side of the pre-treatment assembly; a reaction box is fixedly installed on the right side of the pre-assembly; a pipeline on the right side of the reaction box is fixedly connected to the through hole on the left side of the low-temperature plasma treatment device; a drip box is fixedly arranged on the bottom side of the reaction box; and a drying air duct is plugged and fixedly installed on the right side of the low-temperature plasma treatment device.

[0006] Preferably, the pre-assembly includes a pre-assembly shell fixedly installed on the front side of the pre-treatment assembly, and solenoid valves are fixedly installed at the left and right through holes of the pre-assembly shell; the solenoid valves are fixedly installed at the left and right ports of the serpentine tube; the inside of the serpentine tube is filled with catalytic fillers; the inner side of the pre-assembly shell on the front side of the pre-treatment assembly is fixedly connected to the upper and lower sides of the photosensitive medium tube; a humidification tube is fixedly installed on the solenoid valve on the left side of the pre-assembly shell.

[0007] Preferably, nano-photocatalytic frames are fixedly installed on the left and right sides of the interior of the reaction box; inert catalytic frames are fixedly installed on the left and right sides of the interior of the reaction box; a photocatalytic lamp board is fixedly installed in the gap between the nano-photocatalytic frame and the inert catalytic frame; a drip tube for drainage is provided at the bottom of the reaction box, and the drip tube is fixedly connected to the top of the drip box.

[0008] Preferably, the nano-photocatalytic frame comprises an insulating bracket fixedly installed inside the reaction box; both left and right sides of the insulating bracket are fixedly provided with iron wire meshes by magnetic adsorption.

[0009] Preferably, a joint control plug-in is arranged inside the insulating bracket, and conductive cores are inserted and fixedly arranged on the left and right sides of the joint control plug-in, and the upper and lower ends of the conductive core are respectively in contact with the wire mesh.

[0010] Preferably, the nano-photocatalytic frame and the inert catalytic frame have the same overall structure, both of which are composed of a honeycomb structure formed by hexagonal insulating supports; the insulating supports in the nano-photocatalytic frame are filled with photocatalytic fillers; the insulating supports in the inert catalytic frame are filled with active material fillers.

[0011] Preferably, the pretreatment component is specifically composed of an exhaust gas adsorption bed, a bag dust collector, a water film dust collector and related pipes, and the water film dust collector and the photocatalytic device are connected by a pipe, and the pipe connecting the water film dust collector and the photocatalytic device is an upper arch structure.

[0012] Preferably, a water stop valve is installed at the highest point of the connecting pipe between the water film dust collector and the photocatalytic device to prevent water from flowing back to the photocatalytic device, and a baffle is provided on the lower side of the inner wall of the connected pipe to prevent water or water vapor from condensing.

[0013] The present invention has the following advantages: The present invention provides a photocatalytic microbial organic waste gas purification device through improvement, which has the following improvements compared with the same type of equipment: The photocatalytic microbial organic waste gas purification device described in the present invention performs multiple preliminary treatments on the waste gas through multiple groups of waste gas adsorption beds, bag dust collectors and water film dust collectors, and then generates a large number of active free radicals such as hydroxyl free radicals through pre-assemblies and reaction boxes, which can efficiently decompose organic pollutants in the waste gas, and adopts an external bias method to force electrons to react with fillers to produce holes, which chemically react with the waste gas on the catalyst surface, further enhancing the effect of the photocatalytic reaction. Finally, a drying air duct is used to ensure that the waste gas is fully treated before discharge. By optimizing the performance of nano-photocatalysts, establishing an efficient light source system and strengthening system integration and automatic control, the waste gas treatment efficiency and environmental friendliness can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the axial structure of the photocatalytic device of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the pre-installed assembly of the present invention; Figure 4It is a front view structural schematic diagram of the reaction box of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the nano-photocatalytic framework of the present invention; Figure 6 It is a schematic diagram of the decomposition structure of the nano-photocatalytic framework of the present invention; Figure 7 It is a schematic diagram of the axial structure of the pretreatment component of the present invention.

[0015] Among them: pretreatment component-1, photocatalytic device-2, controller-3, exhaust gas adsorption bed-11, bag dust collector-12, water film dust collector-13, pre-assembly-21, reaction box-22, low-temperature plasma treatment device-23, dripping box-24, drying air duct-25, solenoid valve-211, serpentine tube-212, catalytic filler-213, photomedia tube-214, humidification tube-215, nano-photocatalytic frame-221, inert catalytic frame-222, photocatalytic lamp board-223, dripping tube-224, insulating bracket-2211, wire mesh-2212, joint control plug-in-2213, conductive core-2214. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1 to Figure 7 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0019] Embodiment 1:

[0020] See also Figure 1 to Figure 7 A photocatalytic microbial organic waste gas purification device of the present invention comprises a pretreatment component 1; a photocatalytic device 2 is arranged on the front side of the pretreatment component 1; the pretreatment component 1 and the photocatalytic device 2 are both fixedly connected to a controller 3 through a cable.

[0021] The photocatalytic device 2 includes a pre-assembly 21 fixedly arranged on the front side of the pre-treatment assembly 1; a reaction box 22 is fixedly installed on the right side of the pre-assembly 21; a pipeline on the right side of the reaction box 22 is fixedly connected to a through hole on the left side of the low-temperature plasma treatment device 23; a drip box 24 is fixedly arranged on the bottom side of the reaction box 22; a drying air duct 25 is plugged and fixedly installed on the right side of the low-temperature plasma treatment device 23.

[0022] The pre-assembly 21 includes a pre-assembly shell fixedly installed on the front side of the pre-treatment assembly 1, and the solenoid valve 211 is fixedly installed at the left and right through holes of the pre-assembly shell; the solenoid valve 211 is fixedly installed at the left and right ends of the serpentine tube 212; the inside of the serpentine tube 212 is filled with a catalytic filler 213; the inner side of the pre-assembly shell on the front side of the pre-treatment assembly 1 is fixedly connected to the upper and lower sides of the photosensitive medium tube 214; the humidification tube 215 is plugged and fixedly installed on the solenoid valve 211 on the left side of the pre-assembly shell.

[0023] Nano-photocatalytic frames 221 are fixedly installed on the left and right sides of the reaction box 22; inert catalytic frames 222 are fixedly installed on the left and right sides of the reaction box 22; a photocatalytic lamp board 223 is fixedly installed in the gap between the nano-photocatalytic frame 221 and the inert catalytic frame 222; a drip tube 224 for drainage is provided at the bottom of the reaction box 22, and the drip tube 224 is fixedly connected to the top of the drip box 24.

[0024] The pretreatment component 1 is specifically composed of an exhaust gas adsorption bed 11, a bag dust collector 12, a water film dust collector 13 and related pipes, and the water film dust collector 13 and the photocatalytic device 2 are connected by a pipe, and the connected pipe is an upper arch structure; a water stop valve is installed at the highest point of the connecting pipe between the water film dust collector 13 and the photocatalytic device 2 to prevent water from flowing back to the photocatalytic device 2, and a baffle is arranged on the lower side of the inner wall of the connected pipe to prevent water or water vapor from condensing.

[0025] Embodiment 2:

[0026] See also Figure 1 to Figure 7 Compared with the first embodiment, the present invention is a photocatalytic microbial organic waste gas purification device, and this embodiment further includes: a nano-photocatalytic frame 221 includes an insulating bracket 2211 fixedly installed inside the reaction box 22; both left and right sides of the insulating bracket 2211 are fixedly provided with iron wire mesh 2212 by magnetic adsorption; a joint control plug-in 2213 is provided inside the insulating bracket 2211, and a conductive core 2214 is fixedly provided on the left and right sides of the joint control plug-in 2213, and the upper and lower ends of the conductive core 2214 are respectively in contact with the iron wire mesh 2212.

[0027] The nano-photocatalytic frame 221 and the inert catalytic frame 222 have the same overall structure, both of which are composed of a honeycomb structure formed by hexagonal insulating brackets 2211; the insulating brackets 2211 in the nano-photocatalytic frame 221 are filled with photocatalytic fillers; the insulating brackets 2211 in the inert catalytic frame 222 are filled with active material fillers.

[0028] The working principle of the above-mentioned photocatalytic microbial organic waste gas purification device is: First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation; Second, the controller 3 system controls the exhaust gas pipeline to press into the exhaust gas adsorption bed 11, the bag dust collector 12 and the water film dust collector 13 in sequence, and firstly performs preliminary dry dust removal through the exhaust gas adsorption bed 11 and the bag dust collector 12, and then the exhaust gas enters the water film dust collector 13 for wet dust removal to remove water-soluble substances, so as to prepare for subsequent photocatalytic treatment, thereby performing multiple treatments on the exhaust gas through the aforementioned three groups of devices; Third, the connected pipe through the water film dust collector 13 and the photocatalytic device 2 is designed as an upper arch structure, and a water stop valve is installed at the highest point to prevent water from flowing back to the photocatalytic device 2. A baffle is set on the lower side of the inner wall of the connected pipe between the water film dust collector 13 and the photocatalytic device 2 to prevent water or water vapor from condensing. Then the preliminarily treated exhaust gas is introduced into the interior of the photocatalytic device 2. Here, the exhaust gas is introduced into the interior of the serpentine tube 212. Here, the ultraviolet light of the photomedia tube 214 is used to activate the nanocatalyst in the catalytic filler 213. Here, the nanocatalyst is specifically a nano titanium dioxide photocatalyst, which produces a large number of active free radicals such as hydroxyl free radicals. These free radicals can efficiently decompose organic pollutants in the exhaust gas; Fourth, the exhaust gas is then introduced into the reaction box 22. At this time, the joint control plug-in 2213 is connected to the external power supply to supply energy to the conductive core 2214, that is, the conductive core 2214 provides current to the surface of the wire mesh 2212, and an external bias method is used to force the electrons to react with the filler to form holes. Here, the electrons are separated from the holes under the action of the external electric field, leaving the holes to react chemically with the exhaust gas on the catalyst surface; Fifth, here, by controlling the opening and closing degree of the solenoid valve 211 on the right side of the serpentine tube 212, the flow rate of the exhaust gas flowing through the nano-photocatalytic frame 221 and the inert catalytic frame 222 is changed, and the organic waste gas is purified again with the cooperation of the photocatalytic lamp board 223. The nano-photocatalytic module and the inert catalytic module further enhance the effect of the photocatalytic reaction, converting the decomposed harmful substances into harmless carbon dioxide and water, and draining them through the drip tube 224 and the drip tank 24, and finally through the dry air duct 25 to ensure that the exhaust gas is fully treated and discharged, to ensure the efficient operation of the system.

[0029] The present invention provides a photocatalytic microbial organic waste gas purification device through improvement, and performs multiple preliminary treatments on the waste gas through multiple groups of waste gas adsorption beds 11, bag dust collectors 12 and water film dust collectors 13, and then generates a large number of active free radicals such as hydroxyl free radicals through the pre-assembly 21 and the reaction box 22, which can effectively decompose the organic pollutants in the waste gas, and adopts the method of applying external bias to force the electrons to react with the filler to produce holes and react chemically with the waste gas on the catalyst surface, thereby further enhancing the effect of the photocatalytic reaction. Finally, the drying air duct 25 is used to ensure that the waste gas is fully treated and discharged. By optimizing the performance of the nano-photocatalyst, establishing an efficient light source system and strengthening system integration and automatic control, the waste gas treatment efficiency and environmental friendliness can be greatly improved.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for purifying organic waste gas using photocatalytic microorganisms, Features: It comprises a pretreatment component (1); a photocatalytic device (2) is arranged on the front side of the pretreatment component (1); the pretreatment component (1) and the photocatalytic device (2) are both fixedly connected to a controller (3) via a cable; The photocatalytic device (2) comprises a pre-assembly (21) fixedly arranged on the front side of the pre-treatment assembly (1); a reaction box (22) is fixedly installed on the right side of the pre-assembly (21); a pipeline on the right side of the reaction box (22) is fixedly connected to a through hole on the left side of the low-temperature plasma treatment device (23); a drip box (24) is fixedly arranged on the bottom side of the reaction box (22); a drying air duct (25) is plugged and fixedly installed on the right side of the low-temperature plasma treatment device (23); The pre-assembly (21) comprises a pre-assembly housing fixedly mounted on the front side of the pre-treatment assembly (1), and a solenoid valve (211) is fixedly mounted at the left and right through holes of the pre-assembly housing; the solenoid valve (211) is fixedly mounted at the left and right ends of the serpentine tube (212); the serpentine tube (212) is filled with a catalytic filler (213); the inner side surface of the pre-assembly housing on the front side of the pre-treatment assembly (1) is fixedly connected to the upper and lower sides of the photo-media tube (214); a humidification tube (215) is plugged and fixedly mounted on the solenoid valve (211) on the left side of the pre-assembly housing; A nano photocatalytic frame (221) is fixedly installed on both the left and right sides of the reaction box (22); an inert catalytic frame (222) is fixedly installed on both the left and right sides of the reaction box (22); a photocatalytic lamp panel (223) is fixedly installed at the gap between the nano photocatalytic frame (221) and the inert catalytic frame (222); a dripping pipe (224) for draining liquid is provided at the bottom of the reaction box (22), and the dripping pipe (224) is fixedly connected to the top of the dripping box (24); The nano-photocatalytic frame (221) comprises an insulating bracket (2211) fixedly mounted inside the reaction box (22); the left and right sides of the insulating bracket (2211) are both fixedly provided with iron wire mesh (2212) by magnetic adsorption; a joint control plug-in (2213) is provided inside the insulating bracket (2211), and conductive cores (2214) are fixedly provided on the left and right sides of the joint control plug-in (2213), and the upper and lower ends of the conductive core (2214) are respectively in contact with the iron wire mesh (2212); The nano photocatalytic frame (221) and the inert catalytic frame (222) have the same overall structure, both of which are composed of a honeycomb structure formed by a hexagonal insulating frame (2211); the insulating frame (2211) in the nano photocatalytic frame (221) is filled with a photocatalytic filler; and the insulating frame (2211) in the inert catalytic frame (222) is filled with an active material filler.

2. A device for purifying organic waste gas using photocatalytic microorganisms according to claim 1, Features: The pretreatment component (1) specifically comprises an exhaust gas adsorption bed (11), a bag filter (12), a water film filter (13) and related pipelines, and the water film filter (13) and the photocatalytic device (2) are connected via a pipeline, and the pipeline connecting the water film filter (13) and the photocatalytic device (2) is an upper arch structure.

3. A device for purifying organic waste gas using photocatalytic microorganisms according to claim 2, Features: A water stop valve is installed at the highest point of the connecting pipe between the water film dust collector (13) and the photocatalytic device (2) to prevent water from flowing back to the photocatalytic device (2), and a baffle is provided on the lower side of the inner wall of the connecting pipe to prevent water or water vapor from condensing.

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