A laboratory exhaust treatment system

Abstract

The utility model provides a laboratory waste gas treatment system, including spray tower, connecting air pipe, demisting tower, activated carbon adsorption device, exhaust pipe, fan, protection frame and detection platform, the input of spray tower is fixed with laboratory waste gas discharge end, and the output of spray tower is fixed with demisting tower input through connecting air pipe, the output of demisting tower is fixed with activated carbon adsorption device input through connecting air pipe, wherein the output of activated carbon adsorption device is fixed with fan input through connecting air pipe, and the output of this fan is fixed with exhaust pipe, the outside of exhaust pipe is fixed with protection frame, wherein the outside of protection frame is fixed with detection platform. The utility model's setting, through the combination process of " spray tower + demisting tower + activated carbon adsorption device", can effectively handle the laboratory waste gas of multiple components, and finally through the cooperation of exhaust pipe and fan, the gas after treatment is discharged to high altitude.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to a laboratory waste gas treatment system. Background Technology

[0002] In industrial production and scientific research activities, the production and inspection departments of enterprises and the laboratories of research institutions are the core places for ensuring product quality and promoting technological research and development. When carrying out experimental operations such as raw material composition analysis, product performance testing, and process parameter verification, these laboratories often generate mixed waste gases containing a variety of components due to chemical reagent reactions, sample digestion, and solvent evaporation. These waste gases contain acidic and alkaline substances (such as hydrochloric acid, sulfuric acid, and sodium hydroxide volatiles), organic pollutants (such as benzene, alcohol, and ester solvent vapors), and toxic gases (such as ammonia and formaldehyde).

[0003] These laboratory exhaust gases are characterized by complex composition, unstable emissions, and high toxicity. If they are directly released into the air, they will not only cause irreversible health damage to the respiratory and nervous systems of operators and residents who are in the vicinity of the laboratory for a long time, but will also gradually accumulate and pollute the atmospheric environment, disrupt the ecological balance, and even indirectly pollute the soil and water, triggering a chain of environmental hazards. Therefore, they must be purified by professional exhaust gas treatment equipment before being discharged.

[0004] Currently, there are purification devices for industrial waste gas on the market, and their common structures are mainly divided into two categories: single-treatment type and simple combination type.

[0005] Single-treatment devices often only use spray towers or activated carbon adsorption devices. For example, some small laboratories only use spray towers to neutralize acidic or alkaline substances in waste gas by spraying alkaline or acidic liquids, but they cannot remove organic pollutants. Other devices rely solely on activated carbon adsorption, which can adsorb organic components, but it is difficult to treat high concentrations of acidic or alkaline waste gas. Moreover, acidic or alkaline substances can corrode activated carbon and shorten its service life.

[0006] Simple combination devices are mostly based on the combination of "spray tower + activated carbon adsorption device", lacking a dedicated demisting structure. As a result, the exhaust gas treated by the spray tower carries a large amount of moisture into the activated carbon adsorption device. On the one hand, the moisture will cause the activated carbon to become damp and clump, reducing the adsorption porosity and significantly weakening the adsorption effect. On the other hand, the humid environment will accelerate the aging and deterioration of the activated carbon, increasing the frequency of consumable replacement and operating costs.

[0007] In addition, existing activated carbon adsorption devices generally lack effective safety protection structures: during the process of adsorbing organic waste gas, activated carbon will release heat due to physical adsorption and the slight decomposition and polymerization reaction of some organic matter. If the heat cannot be dissipated in time, local high temperature "hot spots" will form inside the activated carbon. When the temperature reaches the ignition point of organic matter, it is very easy to cause a fire, which poses a serious safety hazard.

[0008] Therefore, it is essential to invent a laboratory waste gas treatment system. Utility Model Content

[0009] To address the above problems, this utility model proposes a laboratory waste gas treatment system, and the technical solution used is as follows:

[0010] A laboratory waste gas treatment system includes a spray tower, connecting ducts, a demister, an activated carbon adsorption device, an exhaust stack, a fan, a protective frame, and a testing platform. The input end of the spray tower is fixed to the laboratory waste gas discharge end, and the output end of the spray tower is fixed to the input end of the demister via the connecting duct. The output end of the demister is fixed to the input end of the activated carbon adsorption device via the connecting duct, wherein the output end of the activated carbon adsorption device is fixed to the input end of the fan via the connecting duct, and the exhaust stack is fixed to the output end of the fan. A protective frame is fixed to the outer side of the exhaust stack, and a testing platform is fixed to the outer side of the protective frame. The spray tower, demister, activated carbon adsorption device, fan, and protective frame are all fixed to the ground.

[0011] Furthermore, the spray tower includes a first tower body, a first air inlet, a first exhaust outlet, a packing mechanism, a spraying mechanism, and a demisting mechanism. The first tower body is fixed to the ground, with a first air inlet at one end and a first exhaust outlet at the other end. The first air inlet is fixed to the laboratory exhaust gas outlet via a flange, and the first exhaust outlet is fixed to the demisting tower input via a connecting duct. Inside the first tower body, at least two packing mechanisms are sequentially arranged from the first air inlet to the first exhaust outlet, with the packing mechanisms fixed to the inner wall of the first tower body. A demisting mechanism is arranged between the packing mechanism near the first exhaust outlet and the first exhaust outlet, with the demisting mechanism fixed to the inner wall of the first tower body. A spraying mechanism is fixed to the outer side of the first tower body, with the output ends of the spraying mechanism respectively located on one side and inside the corresponding packing mechanism. This arrangement enables the removal of pollutants from the exhaust gas.

[0012] Furthermore, the packing mechanism includes a first side plate, a first hollow sphere, a first inlet, a first outlet, and a first observation window. Two first side plates are provided, with the edges of the first side plates fixed to the inner wall of the first tower body, and each first side plate has several first vent holes extending through its interior. Several first hollow spheres are filled between the first side plates, with the upper side of each hollow sphere having an actuating end for the spraying mechanism. A first inlet is located at the upper end of the first tower body between the first side plates, and a first outlet is located at the lower end of the side of the first tower body between the first side plates. Both the first inlet and the first outlet are sealed with first sealing caps. A first observation window is fixed at the upper end of the side of the first tower body between the first side plates. This arrangement improves the removal quality of pollutants from the gas by the spraying mechanism.

[0013] Furthermore, the spraying mechanism includes a water tank, a water pump, a first infusion pipe, a second infusion pipe, and a first nozzle. The water tank is fixed to the outer side of the first tower body, and several water pumps are fixed to the outer side of the water tank, wherein the input end of the water pump is connected to the lower end of the water tank. Several first infusion pipes are fixed to the output end of the water pump, wherein the first infusion pipes are all arranged parallel to one side of the corresponding packing mechanism, and the upper end of each first infusion pipe is fixed to a second infusion pipe through a connector, the second infusion pipe being arranged inside the corresponding packing mechanism. Both the first and second infusion pipes are fixed to the inner wall of the first tower body through pipe clamps, and the first infusion pipes... Several first nozzles are fixed to the outer side of both the first and second infusion pipes. The output ends of the first nozzles all face the corresponding packing mechanism. The first nozzles all adopt spiral nozzles to improve purification efficiency and ensure full and effective utilization of the liquid in the water tank, so that the chemical reaction is more complete. The outer side of the water tank is provided with a liquid replenishment port and a drug filling port, and the lower outer side of the first tower body is provided with a first drain port. The liquid replenishment port, the drug filling port, and the first drain port are all connected to the corresponding external pipes through connectors. The water pump is electrically connected to an external control computer through a data cable. This configuration enables the liquid to be sprayed onto the corresponding packing mechanism.

[0014] Furthermore, the demisting mechanism includes a second side plate, a second hollow sphere, a second inlet, and a second outlet. Two second side plates are provided, with the outer edges of each second side plate fixed to the inner wall of the first tower body, and a plurality of second vent holes penetrating through the interior of each second side plate. A plurality of second hollow spheres are filled between the second side plates. A second inlet is provided at the upper end of the first tower body between the second side plates, and a second outlet is provided at the lower end of the side of the first tower body between the second side plates. A second sealing cap is sealed and fixed to both the second inlet and the second outlet. This arrangement can accelerate the evaporation and dissipation of mist droplets.

[0015] Furthermore, the demisting tower includes a second tower body, a bent pipe, a support plate, a third hollow sphere, a wire mesh, a second drain outlet, and a second observation window. The second tower body is fixed to the ground, and a bent pipe is fixed to the lower end of the second tower body. The outer end of the bent pipe is connected to the discharge end of the spray tower via a connecting duct, and the inner end of the bent pipe faces downwards. A support plate is fixed inside the second tower body, and several third vent holes are formed through the interior of the support plate. A third hollow sphere is laid on the upper side of the support plate, and a wire mesh is placed on the upper side of the third hollow sphere. The outer edge of the wire mesh is fixed to the inner wall of the second tower body. The upper end of the second tower body is connected to the output end of the activated carbon adsorption device via a connecting duct. Several second observation windows are fixed to the outer side of the second tower body, and a second drain outlet is formed on the lower outer side of the second tower body. The second drain outlet is fixed to a corresponding external pipe. This configuration can remove moisture from the gas discharged from the spray tower.

[0016] Furthermore, the activated carbon adsorption device includes a third tower body, a second air inlet, a second exhaust outlet, a support leg, an activated carbon adsorption rack, a third feed inlet, and a third discharge outlet. The lower end of the third tower body is fixed to the support leg by bolts, and the support leg is fixed to the ground. One end of the third tower body has a second air inlet, and the other end of the third tower body has a second exhaust outlet. The second air inlet is connected to the output end of the demister tower through a connecting duct, and the second exhaust outlet is connected to the input end of the fan through a connecting duct. An activated carbon adsorption rack is fixed inside the third tower body, with a third feed inlet on the upper side of the activated carbon adsorption rack and a third discharge outlet on the lower side of the activated carbon adsorption rack. Both the third feed inlet and the third discharge outlet are sealed with third sealing caps. This arrangement enables the adsorption of residual harmful substances in the gas.

[0017] Furthermore, a temperature sensor is fixed to the inner wall of the third tower body, and a third infusion pipe is fixed to the upper inner wall of the third tower body. One end of the third infusion pipe is connected to an external liquid supply mechanism through a connector, and several second nozzles are fixed to the outer side of the third infusion pipe. The output ends of the second nozzles all face the upper side of the activated carbon adsorption rack. A third drain port is opened at the lower end of the third tower body. The temperature sensor is electrically connected to an external control computer through a data cable. This configuration can cool down the activated carbon adsorption rack.

[0018] Furthermore, the activated carbon adsorption rack includes guide plates and activated carbon plates. Several activated carbon plates are provided, with guide plates fixed between adjacent activated carbon plates, and guide plates fixed between the two edge activated carbon plates and the inner wall of the third tower. The guide plates and activated carbon plates are arranged in an "S" shape, with a third feed inlet on the upper side of the activated carbon plate and a third discharge outlet on the lower side. The outer edges of the guide plates are fixed to the inner wall of the third tower. This arrangement ensures that gas passes through the activated carbon plates, thereby enabling the activated carbon plates to adsorb the gas.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention employs a combined process of "spray tower + demister tower + activated carbon adsorption device." First, the spray tower removes acids and alkalis from the waste gas; then, the demister tower removes moisture; and finally, the activated carbon adsorption device adsorbs the remaining organic and other harmful substances. This effectively treats laboratory waste gas with various components. The treated gas is then discharged into the atmosphere via an exhaust stack and fan. In the spray tower, the combination of the spray mechanism and the packing mechanism ensures full contact between the waste gas and the liquid, improving purification efficiency. Furthermore, in the activated carbon adsorption device, the combination of a temperature sensor, a third liquid delivery pipe, and a second nozzle prevents fires caused by the exothermic adsorption process (activated carbon releases heat during the decomposition or polymerization of organic matter; if this heat cannot be dissipated in time, it can create hot spots and cause fires). Finally, the activated carbon adsorption rack ensures effective adsorption of harmful substances in the gas. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the spray tower of this utility model.

[0024] Figure 3 This is a schematic diagram of the packing mechanism of this utility model.

[0025] Figure 4 This is a schematic diagram of the spraying mechanism of this utility model.

[0026] Figure 5This is a schematic diagram of the defogging mechanism of this utility model.

[0027] Figure 6 This is a schematic diagram of the structure of the defogging tower of this utility model.

[0028] Figure 7 This is a schematic diagram of the main structure of the activated carbon adsorption device of this utility model.

[0029] Figure 8 This is a top view schematic diagram of the activated carbon adsorption device of this utility model.

[0030] Figure 9 This is a top view schematic diagram of the activated carbon adsorption rack of this utility model.

[0031] In the picture:

[0032] 1-Spray tower, 11-First tower body, 12-First air inlet, 13-First exhaust outlet, 14-Packing mechanism, 141-First side plate, 142-First hollow sphere, 143-First feed inlet, 144-First discharge outlet, 145-First observation window, 15-Spraying mechanism, 151-Water tank, 152-Water pump, 153-First inlet pipe, 154-Second inlet pipe, 155-First nozzle, 16-Demisting mechanism, 161-Second side plate, 162-Second hollow sphere, 163-Second feed inlet, 164-Second discharge outlet, 2-Connecting duct, 3-Demisting Fog tower, 31-Second tower body, 32-Bend pipe, 33-Support plate, 34-Third hollow sphere, 35-Wire mesh, 36-Second drain port, 37-Second observation window, 4-Activated carbon adsorption device, 41-Third tower body, 42-Second air inlet, 43-Second exhaust port, 44-Support leg, 45-Activated carbon adsorption rack, 451-Guide plate, 452-Activated carbon plate, 46-Third feed inlet, 47-Third discharge port, 48-Temperature sensor, 49-Third infusion pipe, 410-Third drain port, 5-Exhaust stack, 6-Fan, 7-Protective frame, 8-Detection platform. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Please see Figures 1 to 9 As shown, this utility model is a laboratory waste gas treatment system, including a spray tower 1, a connecting duct 2, a demister 3, an activated carbon adsorption device 4, an exhaust stack 5, a fan 6, a protective frame 7, and a testing platform 8. The input end of the spray tower 1 is fixed to the laboratory waste gas discharge end, and the output end of the spray tower 1 is fixed to the input end of the demister 3 through the connecting duct 2. The output end of the demister 3 is fixed to the input end of the activated carbon adsorption device 4 through the connecting duct 2, wherein the output end of the activated carbon adsorption device 4 is fixed to the input end of the fan 6 through the connecting duct 2, and the exhaust stack 5 is fixed to the output end of the fan 6. The protective frame 7 is fixed to the outer side of the exhaust stack 5, and the testing platform 8 is fixed to the outer side of the protective frame 7. The spray tower 1, the demister 3, the activated carbon adsorption device 4, the fan 6, and the protective frame 7 are all fixed to the ground.

[0036] Specifically, the spray tower 1 includes a first tower body 11, a first air inlet 12, a first exhaust outlet 13, a packing mechanism 14, a spraying mechanism 15, and a demisting mechanism 16. The first tower body 11 is fixed to the ground, with the first air inlet 12 at one end and the first exhaust outlet 13 at the other end. The first air inlet 12 is fixed to the laboratory exhaust gas outlet via a flange, and the first exhaust outlet 13 is fixed to the input end of the demisting tower 3 via a connecting duct 2. At least two packing mechanisms 14 are sequentially arranged inside the first tower body 11 from the first air inlet 12 to the first exhaust outlet 13, wherein the packing mechanism 14 is fixed to the inner wall of the first tower body 11. The packing mechanism 14 near the first exhaust outlet 15 is connected to the first air inlet 12 and the first exhaust outlet 13. A demisting mechanism 16 is provided between the first exhaust port 13, and the demisting mechanism 16 is fixed to the inner wall of the first tower body 11. A spraying mechanism 15 is fixed to the outer side of the first tower body 11, and the output end of the spraying mechanism 15 is respectively set on one side and inside the corresponding packing mechanism 14. With this arrangement, the exhaust gas discharged from the laboratory will enter the interior of the first tower body 11 from the first air inlet 12, and then pass through the packing mechanism 14 and the demisting mechanism 16 in sequence, and finally pass through the first exhaust port 13 to be discharged into the demisting tower 3. When the exhaust gas passes through the packing mechanism 14, the pollutants in the exhaust gas can be removed by the cooperation of the spraying mechanism 15 and the packing mechanism 14, while the demisting mechanism 16 can preliminarily remove the moisture contained in the exhaust gas.

[0037] Specifically, the filling mechanism 14 includes a first side plate 141, a first hollow sphere 142, a first feed inlet 143, a first discharge outlet 144, and a first observation window 145. Two first side plates 141 are provided, with their edges fixed to the inner wall of the first tower body 11, and each side plate 141 has several first ventilation holes extending through it. Several first hollow spheres 142 are filled between the first side plates 141, with the upper side of each first hollow sphere 142 having an actuating end of the spraying mechanism 15. A first feed inlet 143 is provided at the upper end of the first tower body 11 between the first side plates 141, and a first discharge outlet 144 is provided at the lower end of the side of the first tower body 11 between the first side plates 141. The first feed inlet 143 and the first discharge outlet 144... Each discharge port 144 is sealed with a first sealing cover; a first observation window 145 is fixed to the upper side of the first tower body 11 between the first side plates 141. During use, the exhaust gas inside the first tower body 11 passes through the gap between the first side plate 141 and the first hollow ball 142. As the exhaust gas passes through the first hollow ball 142, the liquid sprayed from the actuating end of the spray mechanism 15 flows along the first hollow ball 142, thereby making full contact between the exhaust gas and the liquid on the outer surface of the first hollow ball 142, thus improving the removal quality of pollutants in the gas by the spray mechanism 15. In addition, the first hollow ball 142 between the first side plates 141 can be replaced by the cooperation of the first inlet 143 and the first discharge port 144.

[0038] Specifically, the spraying mechanism 15 includes a water tank 151, a water pump 152, a first infusion pipe 153, a second infusion pipe 154, and a first nozzle 155. The water tank 151 is fixed to the outer side of the first tower body 11, and several water pumps 152 are fixed to the outer side of the water tank 151, wherein the input end of the water pump 152 communicates with the lower end of the interior of the water tank 151; several first infusion pipes 153 are fixed to the output end of the water pump 152, wherein the first infusion pipes 153 are all arranged parallel to one side of the corresponding packing mechanism 14, and the upper end of each first infusion pipe 153 is fixed to a second infusion pipe 154 through a connector, and the second infusion pipe 154 is arranged inside the corresponding packing mechanism 14; the first infusion pipes 153 and the second infusion pipes 154 are both fixed to the inner wall of the first tower body 11 through pipe clamps, and several first nozzles 155 are fixed to the outer side of each of the first infusion pipes 153 and the second infusion pipes 154, the output end of each first nozzle 155 facing the corresponding packing mechanism. 14. The first nozzles 155 all adopt spiral nozzles to improve purification efficiency and ensure full and effective utilization of the liquid in the water tank, making the chemical reaction more complete. The outer side of the water tank 151 is provided with a liquid replenishment port and a drug filling port, and the lower outer side of the first tower body 11 is provided with a first drain port. The liquid replenishment port, the drug filling port, and the first drain port are all connected to the corresponding external pipes through connectors. The water pump 152 is electrically connected to the external control computer through a data cable. When in use, the water pump 152 can be started by the external control computer to draw the liquid inside the water tank 151, and then transport the liquid through the first infusion pipe 153 and the second infusion pipe 154. Finally, the liquid is sprayed onto the corresponding packing mechanism 14 through the first nozzles 155. In addition, liquid and corresponding drugs can be added to the inside of the water tank 151 through the liquid replenishment port and the drug filling port. In addition, the liquid inside the first tower body 11 can be discharged through the first drain port.

[0039] Specifically, the demisting mechanism 16 includes a second side plate 161, a second hollow sphere 162, a second feed inlet 163, and a second discharge outlet 164. Two second side plates 161 are provided, with their outer edges fixed to the inner wall of the first tower body 11, and each second side plate 161 having several second vent holes extending through it. Several second hollow spheres 162 are filled between the second side plates 161. A second feed inlet 163 is provided at the upper end of the first tower body 11 between the second side plates 161, and a second discharge outlet 164 is provided at the lower end of the side of the first tower body 11 between the second side plates 161. A second discharge port 164 is provided, and a second sealing cover is fixedly fixed on both the second inlet 163 and the second discharge port 164. During use, the gas inside the first tower body 11 passes through the gap between the second side plate 161 and the second hollow ball 162, thereby providing a large number of contact points for the gas through the second hollow ball 162, so that the droplets can fully contact the gas when passing through the second hollow ball 162, thereby accelerating the evaporation and dissipation of the droplets. In addition, the second hollow ball 162 can be replaced by the cooperation of the second inlet 163 and the second discharge port 164.

[0040] Specifically, the demisting tower 3 includes a second tower body 31, a bent pipe 32, a support plate 33, a third hollow sphere 34, a wire mesh 35, a second drain outlet 36, and a second observation window 37. The second tower body 31 is fixed to the ground, and a bent pipe 32 is fixed to the lower end of the second tower body 31. One end of the bent pipe 32 on the outside of the second tower body 31 is connected to the discharge end of the spray tower 1 through a connecting air duct 2, and the other end of the bent pipe 32 on the inside of the second tower body 31 is set with its opening facing downward. A support plate 33 is fixed inside the second tower body 31, and several third vent holes are opened through the inside of the support plate 33. The upper side of the support plate 33 is covered with a third hollow sphere 34, and a wire mesh 35 is set on the upper side of the third hollow sphere 34. The edge is fixed to the inner wall of the second tower body 31; the upper end of the second tower body 31 is connected to the output end of the activated carbon adsorption device 4 through the connecting air duct 2; several second observation windows 37 are fixed on the outer side of the second tower body 31, and a second drain port 36 is opened on the lower outer side of the second tower body 31. The second drain port 36 is fixed to the corresponding external pipe. In use, the gas discharged through the spray tower 1 will pass through the bend pipe 32, the third vent hole inside the support plate 33, the third hollow ball 34 and the wire mesh 35 in sequence, and finally be discharged at the upper end of the second tower body 31. When the gas passes through the third hollow ball 34 and the wire mesh 35, the moisture in the gas can be removed. In addition, the removed liquid will be discharged at the second drain port 36.

[0041] Specifically, the activated carbon adsorption device 4 includes a third tower body 41, a second air inlet 42, a second exhaust outlet 43, a support leg 44, an activated carbon adsorption frame 45, a third feed inlet 46, and a third discharge outlet 47. The lower end of the third tower body 41 is fixed to the support leg 44 by bolts, and the support leg 44 is fixed to the ground. One end of the third tower body 41 has a second air inlet 42, and the other end of the third tower body 41 has a second exhaust outlet 43. The second air inlet 42 is connected to the output end of the demister tower 3 through a connecting duct 2, and the second exhaust outlet 43 is connected to the input end of the fan 6 through a connecting duct 2. An activated carbon adsorption rack 45 is fixed inside the 41. The third tower body 41 on the upper side of the activated carbon adsorption rack 45 has a third feed port 46, and the third tower body 41 on the lower side of the activated carbon adsorption rack 45 has a third discharge port 47. Both the third feed port 46 and the third discharge port 47 are sealed with third sealing caps. With this arrangement, the gas discharged from the demisting tower 3 will pass through the inside of the activated carbon adsorption rack 45, thereby adsorbing the remaining harmful substances in the gas. In addition, by cooperating with the third feed port 46 and the third discharge port 47, the corresponding structure inside the activated carbon adsorption rack 45 can be replaced.

[0042] Specifically, a temperature sensor 48 is fixed to the inner wall of the third tower body 41, and a third infusion pipe 49 is fixed to the upper inner wall of the third tower body 41. One end of the third infusion pipe 49 is connected to an external liquid supply mechanism through a connector, and several second nozzles are fixed to the outer side of the third infusion pipe 49. The output ends of the second nozzles all face the upper side of the activated carbon adsorption rack 45. A third drain port 410 is opened at the lower end of the third tower body 41. The temperature sensor 48 is electrically connected to an external control computer through a data cable. In use, the temperature sensor 48 can detect the temperature inside the third tower body 41 and transmit the data to the external control computer. If the temperature exceeds a preset threshold, the external water supply mechanism can be activated. Then, through the cooperation of the third infusion pipe 49 and the third nozzles, the activated carbon adsorption rack 45 is cooled down (activated carbon adsorption releases heat when decomposing or polymerizing organic matter. If the heat cannot be discharged in time, it may form a hot spot and cause a fire).

[0043] Specifically, the activated carbon adsorption rack 45 includes a guide plate 451 and activated carbon plates 452. Several activated carbon plates 452 are provided, with a guide plate 451 fixed between adjacent activated carbon plates 452, and a guide plate 451 fixed between the two edge activated carbon plates 452 and the inner wall of the third tower body 41. The guide plate 451 and the activated carbon plates 452 are arranged in an "S" shape. A third feed inlet 46 is provided on the upper side of the activated carbon plate 452, and a third discharge outlet 47 is provided on the lower side of the activated carbon plate 452. The outer edges of the guide plate 451 are fixed to the inner wall of the third tower body 41. In use, the guide plate 451 guides the gas, ensuring that the gas passes through the interior of the activated carbon plate 452, thereby enabling the activated carbon plate 452 to adsorb the gas. Furthermore, the activated carbon plate 452 can be replaced through the cooperation of the third feed inlet 46 and the third discharge outlet 47.

[0044] Please see Figure 1-9 As shown, this utility model is a laboratory exhaust gas treatment system. Its working principle is as follows: When in use, the exhaust gas discharged from the laboratory can pass through the spray tower 1 (removing pollutants from the gas), the demisting tower 3 (removing moisture from the gas), and the activated carbon adsorption device 4 (adsorbing and purifying the gas) in sequence. Then, the purified gas is discharged to the high altitude through the fan 6 and the exhaust pipe 5. In addition, the protective frame 7 can support the exhaust pipe 5 and can be climbed by the detection platform 8.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A laboratory waste gas treatment system, comprising a spray tower (1), connecting duct (2), demister (3), activated carbon adsorption device (4), exhaust stack (5), fan (6), protective frame (7), and testing platform (8), characterized in that: The input end of the spray tower (1) is fixed to the exhaust end of the laboratory, and the output end of the spray tower (1) is fixed to the input end of the demisting tower (3) through the connecting duct (2); the output end of the demisting tower (3) is fixed to the input end of the activated carbon adsorption device (4) through the connecting duct (2), wherein the output end of the activated carbon adsorption device (4) is fixed to the input end of the fan (6) through the connecting duct (2), and the output end of the fan (6) is fixed with an exhaust pipe (5); a protective frame (7) is fixed on the outer side of the exhaust pipe (5), wherein a detection platform (8) is fixed on the outer side of the protective frame (7); the spray tower (1), the demisting tower (3), the activated carbon adsorption device (4), the fan (6) and the protective frame (7) are all fixed on the ground.

2. The laboratory waste gas treatment system as described in claim 1, characterized in that: The spray tower (1) includes a first tower body (11), a first air inlet (12), a first exhaust outlet (13), a packing mechanism (14), a spraying mechanism (15), and a demisting mechanism (16). The first tower body (11) is fixed on the ground. One end of the first tower body (11) is provided with a first air inlet (12), and the other end of the first tower body (11) is fixed with a first exhaust outlet (13). The first air inlet (12) is fixed to the exhaust end of the laboratory, and the first exhaust outlet (13) is fixed to the input end of the demisting tower (3) through a connecting duct (2). Inside the first tower body (11), at least two packing mechanisms (14) are arranged sequentially from the first air inlet (12) to the first exhaust outlet (13), wherein the packing mechanism (14) is fixed to the inner wall of the first tower body (11); a demisting mechanism (16) is arranged between the packing mechanism (14) near the first exhaust outlet (13) and the first exhaust outlet (13), wherein the demisting mechanism (16) is fixed to the inner wall of the first tower body (11); a spraying mechanism (15) is fixed on the outer side of the first tower body (11), wherein the output end of the spraying mechanism (15) is respectively arranged on one side and inside the corresponding packing mechanism (14).

3. The laboratory waste gas treatment system as described in claim 2, characterized in that: The filling mechanism (14) includes a first side plate (141), a first hollow sphere (142), a first feed inlet (143), a first discharge outlet (144), and a first observation window (145). Two first side plates (141) are provided, with the edge of each first side plate (141) fixed to the inner wall of the first tower body (11), and each first side plate (141) has several first ventilation holes penetrating its interior. Several first hollow spheres (142) are filled between the first side plates (141), wherein the first hollow spheres (142)... The upper side of 142) is provided with the execution end of the spraying mechanism (15); the upper end of the first tower body (11) between the first side plates (141) is provided with a first feed inlet (143), and the lower end of the side of the first tower body (11) between the first side plates (141) is provided with a first discharge outlet (144). The first feed inlet (143) and the first discharge outlet (144) are both sealed and fixed with a first sealing cover; the upper end of the side of the first tower body (11) between the first side plates (141) is fixed with a first observation window (145).

4. The laboratory waste gas treatment system as described in claim 2, characterized in that: The spraying mechanism (15) includes a water tank (151), a water pump (152), a first infusion pipe (153), a second infusion pipe (154), and a first nozzle (155). The water tank (151) is fixed to the outer side of the first tower body (11), and several water pumps (152) are fixed to the outer side of the water tank (151). The input end of the water pump (152) is connected to the lower end of the interior of the water tank (151). Several first infusion pipes (153) are fixed to the output end of the water pump (152). The first infusion pipes (153) are all arranged parallel to one side of the corresponding packing mechanism (14), and the upper end of each first infusion pipe (153) is fixed with a second infusion pipe (154). The first infusion pipe (153) and the second infusion pipe (154) are fixed to the inner wall of the first tower body (11) by pipe clamps, and the outer sides of the first infusion pipe (153) and the second infusion pipe (154) are fixed with a number of first nozzles (155), the output ends of the first nozzles (155) are all facing the corresponding packing mechanism (14); the outer side of the water tank (151) is provided with a replenishment port and a filling port, and the lower outer side of the first tower body (11) is provided with a first drain port, wherein the replenishment port, the filling port and the first drain port are all connected to the corresponding external pipes through connectors; the water pump (152) is electrically connected to the external control computer through a data cable.

5. A laboratory waste gas treatment system as described in claim 2, characterized in that: The demisting mechanism (16) includes a second side plate (161), a second hollow sphere (162), a second feed inlet (163), and a second discharge outlet (164). There are two second side plates (161), the outer edges of which are fixed to the inner wall of the first tower body (11), and several second vent holes are opened through the interior of each second side plate (161). Several second hollow spheres (162) are filled between the second side plates (161). A second feed inlet (163) is opened at the upper end of the first tower body (11) between the second side plates (161), and a second discharge outlet (164) is opened at the lower end of the side of the first tower body (11) between the second side plates (161). A second sealing cap is sealed and fixed on both the second feed inlet (163) and the second discharge outlet (164).

6. The laboratory waste gas treatment system as described in claim 1, characterized in that: The demisting tower (3) includes a second tower body (31), a bent pipe (32), a support plate (33), a third hollow sphere (34), a wire mesh (35), a second drain outlet (36), and a second observation window (37). The second tower body (31) is fixed to the ground, and a bent pipe (32) is fixed to the lower end of the second tower body (31). The end of the bent pipe (32) located outside the second tower body (31) is connected to the discharge end of the spray tower (1) through a connecting air duct (2), and the end of the bent pipe (32) located inside the second tower body (31) has its opening facing downwards. A support plate (33) is fixed inside the second tower body (31). (33) has several third ventilation holes through it; the upper side of the support plate (33) is covered with a third hollow sphere (34), and a wire mesh (35) is provided on the upper side of the third hollow sphere (34), the outer edge of which is fixed to the inner wall of the second tower body (31); the upper end of the second tower body (31) is connected to the output end of the activated carbon adsorption device (4) through the connecting air pipe (2); several second observation windows (37) are fixed on the outer side of the second tower body (31), and a second drain port (36) is opened on the lower outer side of the second tower body (31), wherein the second drain port (36) is fixed to the corresponding external pipe.

7. The laboratory waste gas treatment system as described in claim 1, characterized in that: The activated carbon adsorption device (4) includes a third tower body (41), a second air inlet (42), a second exhaust outlet (43), a support leg (44), an activated carbon adsorption rack (45), a third feed inlet (46), and a third discharge outlet (47). The lower end of the third tower body (41) is fixed with the support leg (44), which is fixed to the ground. One end of the third tower body (41) has a second air inlet (42), and the other end of the third tower body (41) has a second exhaust outlet (43). The second exhaust port (43) is connected to the output end of the demisting tower (3) via the connecting duct (2), and the second exhaust port (43) is connected to the input end of the fan (6) via the connecting duct (2); the third tower body (41) is fixed with an activated carbon adsorption rack (45), wherein the third tower body (41) on the upper side of the activated carbon adsorption rack (45) is provided with a third feed port (46), and the third tower body (41) on the lower side of the activated carbon adsorption rack (45) is provided with a third discharge port (47); the third feed port (46) and the third discharge port (47) are both sealed with a third sealing cover.

8. The laboratory waste gas treatment system as described in claim 7, characterized in that: A temperature sensor (48) is fixed to the inner wall of the third tower body (41), and a third infusion pipe (49) is fixed to the upper inner wall of the third tower body (41). One end of the third infusion pipe (49) is connected to an external liquid supply mechanism, and several second nozzles are fixed to the outer side of the third infusion pipe (49). The output ends of the second nozzles all face the upper side of the activated carbon adsorption rack (45). A third drain port (410) is opened at the lower end of the third tower body (41). The temperature sensor (48) is electrically connected to an external control computer through a data cable.

9. A laboratory waste gas treatment system as described in claim 7, characterized in that: The activated carbon adsorption rack (45) includes a guide plate (451) and an activated carbon plate (452). Several activated carbon plates (452) are provided, and a guide plate (451) is fixed between adjacent activated carbon plates (452). The two edge activated carbon plates (452) are fixed with a guide plate (451) to the inner wall of the third tower body (41). The guide plate (451) and the activated carbon plate (452) are arranged in an "S" shape. A third feed port (46) is provided on the upper side of the activated carbon plate (452), and a third discharge port (47) is provided on the lower side of the activated carbon plate (452). The outer edge of the guide plate (451) is fixed to the inner wall of the third tower body (41).

Images