Waste gas treatment system

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment system which comprises a collecting module. The spraying module is connected with the collecting module, the spraying module comprises a plurality of reactors, the reactors are communicated with one another through pipelines, each pipeline is provided with a first electromagnetic valve, the collecting module comprises a main pipeline, the main pipeline collects waste gas of a corresponding workshop through a plurality of first branch pipelines, and the first branch pipelines are communicated with the main pipeline. The main pipeline is communicated with the corresponding reactors through a plurality of first branch pipelines, the main pipeline is respectively communicated with the corresponding reactors through a plurality of second branch pipelines, each first branch pipeline is provided with a second electromagnetic valve, each second branch pipeline is provided with a third electromagnetic valve, and the first electromagnetic valves, the second electromagnetic valves and the third electromagnetic valves are respectively connected with a controller. The waste gas treatment system can efficiently and flexibly treat waste gas generated by a plurality of production workshops, and has the advantages of small occupied area, low investment and high waste gas treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment system. Background Art

[0002] During the tin-plating process in the tin-plating workshop, the generation of waste gas mainly comes from several key links, involving multiple mechanisms such as chemical reactions, physical effects and energy exchange. The main source of waste gas in the tin-plating process is the organic waste gas volatilized at high temperature during the acid immersion tin-plating production process. The tin-plating solution usually contains strong acids such as sulfuric acid and hydrochloric acid, which will volatilize acid mist when heated or reacted with the substrate. Such gases are irritating to the respiratory system, causing symptoms such as sore throat and coughing, and corroding surrounding equipment, and being discharged into the atmosphere to cause pollution. Although the prior art also has related waste gas spray treatment systems, due to the different types of waste gas in different workshops, in order to treat different types of waste gas, only one waste gas spray treatment device is fixed in each workshop. In actual production, the content of waste gas is mostly relatively complex, and it cannot be efficiently treated by only a single spray liquid, and there is a high cost problem of setting up multiple spray treatment devices in each workshop. Summary of the invention

[0003] The purpose of the present invention is to avoid the deficiencies in the prior art and provide a waste gas treatment system which can efficiently and flexibly treat waste gas generated by multiple production workshops and has the advantages of small footprint, low investment and high waste gas treatment efficiency.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] Provide exhaust gas treatment system, including:

[0006] Collection module, used to collect waste gas from each production workshop;

[0007] The collection module is used to collect exhaust gas from each workshop.

[0008] A spray module is connected to the collection module and is used to spray and neutralize the waste gas input from the collection module. The spray module includes a plurality of reactors, each reactor is interconnected through a pipeline and each pipeline is provided with a first solenoid valve.

[0009] The spray module generates spray liquid to spray and neutralize the exhaust gas. Among them, since the reactors are interconnected by pipes and each pipe is provided with a first solenoid valve, that is, each reactor is connected with the remaining reactors, and the connected pipes are provided with the first solenoid valve. Therefore, by controlling the first solenoid valve, the connected reactors can be flexibly adjusted, that is, the order in which the exhaust gas passes through the reactor can be flexibly adjusted, so that the mixed exhaust gas can be treated by different spray liquids, thereby achieving efficient exhaust gas treatment effect.

[0010] The collection module includes a main pipeline, the main pipeline collects the exhaust gas of the corresponding workshop through a plurality of first branch pipelines, the main pipeline is connected to the corresponding reactors through a plurality of second branch pipelines, each first branch pipeline is provided with a second solenoid valve, each second branch pipeline is provided with a third solenoid valve,

[0011] Since the main pipeline and the branch pipeline are provided, the exhaust gas from the workshop can be input into the reactor through the main pipeline. By controlling the third solenoid valve on the second branch pipeline, the reactor into which the exhaust gas enters can be flexibly selected, thereby achieving a flexible neutralization reaction effect.

[0012] The first solenoid valve, the second solenoid valve and the third solenoid valve are respectively connected to a controller, and the controller controls the opening sequence of the solenoid valves according to the type of exhaust gas to control the reactor through which the exhaust gas flows.

[0013] The controller is configured to intelligently adjust the opening sequence of the first solenoid valve, the second solenoid valve and the third solenoid valve. In actual applications, only by inputting a specific exhaust gas type, the controller can flexibly control the opening state of the corresponding solenoid valve, which has the advantage of a high degree of intelligence.

[0014] In some embodiments, a discharge module is further included, wherein the discharge module is connected to the spray module and is used to discharge the gas after the reaction, and a gas concentration detection alarm is provided on the discharge module.

[0015] The emission module is equipped with a gas concentration detection alarm, so that each waste gas in the exhaust gas can be detected, and the exhaust gas will be discharged only when the exhaust gas components meet the standards. In actual applications, multiple required gas concentration detection alarms will be set up, so that the corresponding exhaust gas concentration can be accurately detected.

[0016] In some embodiments, a waste liquid recovery module is further included, connected to the bottom of the reactor.

[0017] The waste liquid recovery module is used to recover the spray liquid so that the spray liquid containing waste gas can be discharged after treatment.

[0018] In some embodiments, the reactor includes a shower head and a plurality of packing layers, wherein the shower head is disposed on the top of the reactor, and the plurality of packing layers are distributed from top to bottom along the height direction of the reactor.

[0019] Since the spray head is arranged at the top, the exhaust gas transmitted from bottom to top can be sprayed better, and the packing layer can fully treat the exhaust gas better.

[0020] In some embodiments, environmentally friendly balls are placed on the filler layer.

[0021] In some embodiments, an anti-fog plate is provided on the top of the reactor, and the exhaust gas treated by the packing layer is discharged through the anti-fog plate.

[0022] The anti-fog plate can remove the water vapor from the treated exhaust gas before it is discharged.

[0023] In some embodiments, the discharge module includes a circulation pool and a wastewater treatment pool, the circulation pool and the wastewater treatment pool are respectively connected to the bottom of the reactor, the circulation pool is used to receive the secondary spray liquid after the waste gas is treated, and the secondary spray liquid flows back to the spray head.

[0024] The circulation pool is used to reuse the spray liquid that can still be used for spraying. In actual applications, the state of the spray liquid at the bottom of the reactor is detected to determine whether to continue to circulate it. When it cannot be recycled, the wastewater treatment pool at the bottom of the reactor is opened to transfer the waste liquid to the wastewater treatment pool.

[0025] The wastewater treatment tank comprises a neutralization unit, a sedimentation unit and a filtration unit which are sequentially arranged along the flow direction of the wastewater.

[0026] The neutralization unit is used to neutralize the treated wastewater again to achieve the effect of recycling the wastewater.

[0027] The precipitation unit is used to carry out precipitation reaction on the wastewater produced by the neutralization reaction;

[0028] The filtration unit filters the wastewater that produces precipitation to remove impurities.

[0029] In some embodiments, the spray head is a double-head spray head, and the double-head spray head rotates.

[0030] The double-head sprinkler can produce a better spraying effect.

[0031] In some embodiments, a pH meter, a flow meter and a pressure meter are further provided in the reactor.

[0032] The pH meter, flow meter and pressure gauge are used to detect the pH, flow rate and pressure of the spray liquid respectively. When the requirements are not met, the state of the spray liquid is adjusted in time.

[0033] In some embodiments, the spray module further includes a liquid medicine tank, and the liquid medicine tank inputs liquid into the spray module through a self-priming gas-liquid mixing pump.

[0034] Beneficial effects of an exhaust gas treatment system of the present invention:

[0035] The waste gas treatment system of the present invention has a collection module that collects waste gas from the corresponding workshop through a first branch pipeline and transmits it to a main pipeline, and the main pipeline then transmits it to a corresponding reactor through a second branch pipeline. Since a second solenoid valve, a third solenoid valve and a first solenoid valve are respectively arranged between the first branch pipeline, the second branch pipeline and each reactor, the order in which each workshop is transmitted to the corresponding reactor and the flow reactor can be adjusted arbitrarily. When the waste gas types of multiple workshops are different and the waste gas is to be treated at the same time, the waste gas of each workshop can be uniformly gathered to the main pipeline, and then the opening order of the first solenoid valve of each reactor is controlled so that the mixed waste gas can be sequentially discharged. The waste gas enters different reactors and is treated by the corresponding spray liquid, so that the final output waste gas can be efficiently neutralized. There is no need to set up multi-level reactors in each workshop, which saves costs, and can flexibly adjust the corresponding reactors to improve production efficiency. Furthermore, when only one type of waste gas is generated in the production workshop and only one production workshop needs to treat the waste gas, it is only necessary to open the corresponding second solenoid valve and the third solenoid valve to transmit the waste gas to the corresponding reactor for neutralization reaction, and when different types of waste gases are generated in a workshop, it is only necessary to adjust the third solenoid valve to transmit the waste gas to the appropriate reactor, which effectively reduces the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a first visual schematic diagram of the connection between the exhaust gas treatment system and the workshop according to an embodiment of the present invention.

[0037] Figure 2 It is a first visual schematic diagram of the connection between the exhaust gas treatment system and the workshop according to an embodiment of the present invention.

[0038] Figure 3 It is a working status diagram of the collection module and the spray module of an embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the structure of the reactor.

[0040] Figure 5 It is a structural diagram of the control panel.

[0041] Reference numerals

[0042] 1. Reactor; 2. First solenoid valve; 3. Main pipeline; 4. First branch pipeline; 5. Second branch pipeline; 6. Second solenoid valve; 7. Third solenoid valve; 8. Sprinkler head; 9. Packing layer; 10. Circulation pool; 11. Neutralization unit; 12. Sedimentation unit; 13. Filtration unit; 14. Production workshop; 15. Liquid medicine tank. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0044] The terms used in the present invention are only for the purpose of describing specific implementation regulations, and are not intended to limit the present invention. The singular forms "a", "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0045] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] Example 1

[0047] The exhaust gas treatment system disclosed in this embodiment can be found in Figure 1 to Figure 5 ,include:

[0048] A collection module, used to collect waste gas from each production workshop 14;

[0049] The collection module is used to collect the exhaust gas from each workshop, generally through wind hoods, air suction ports and other equipment.

[0050] A spray module is connected to the collection module and is used to spray and neutralize the waste gas input from the collection module. The spray module includes a plurality of reactors 1, each reactor 1 is interconnected through a pipeline and each pipeline is provided with a first solenoid valve 2.

[0051] The spray module generates spray liquid to spray and neutralize the exhaust gas. Since the reactors 1 are interconnected through pipes and each pipe is provided with a first solenoid valve 2, that is, each reactor 1 is connected with the remaining reactors 1, and the connected pipes are provided with a first solenoid valve 2. Therefore, by controlling the first solenoid valve 2, the connected reactors 1 can be flexibly adjusted, that is, the order in which the exhaust gas passes through the reactors 1 can be flexibly adjusted, so that the mixed exhaust gas can be treated with different spray liquids, thereby achieving an efficient exhaust gas treatment effect.

[0052] The spray module is mainly used to capture and neutralize acidic gases, organic solvent vapors and other harmful gases. It uses liquid chemicals, such as alkaline liquids (such as sodium hydroxide NaOH solution) to react chemically with acidic gases in the exhaust gas, converting them into harmless or weaker compounds, thereby achieving the purpose of exhaust gas purification.

[0053] The collection module includes a main pipeline 3, the main pipeline collects the exhaust gas of the corresponding workshop through a plurality of first branch pipelines 4, the main pipeline is connected to the corresponding reactor 1 through a plurality of second branch pipelines 5, each first branch pipeline 4 is provided with a second solenoid valve 6, each second branch pipeline 5 is provided with a third solenoid valve 7,

[0054] Since the main line 3 and the branch line are provided, the workshop exhaust gas can be input into the reactor 1 through the main line 3, wherein the reactor 1 into which the exhaust gas enters can be flexibly selected by controlling the third solenoid valve 7 on the second branch line, thereby achieving a flexible neutralization reaction effect.

[0055] The first solenoid valve 2 , the second solenoid valve 6 and the third solenoid valve 7 are respectively connected to a controller, and the controller controls the opening sequence of the solenoid valves according to the type of exhaust gas to control the reactor 1 through which the exhaust gas flows.

[0056] The controller is configured to intelligently adjust the opening sequence of the first solenoid valve 2, the second solenoid valve 6 and the third solenoid valve 7. In actual applications, only by inputting a specific exhaust gas type, the controller can flexibly control the opening state of the corresponding solenoid valve, which has the advantage of a high degree of intelligence.

[0057] That is, the collection module is responsible for collecting the exhaust gas in each production workshop 14, and using wind collecting hoods, air suction ports and other equipment for centralized collection.

[0058] It comprises a main pipeline 3 , which collects waste gas from corresponding workshops through a plurality of first branch pipelines 4 , and is connected to corresponding reactors 1 through a plurality of second branch pipelines 5 .

[0059] Each first branch pipeline 4 is provided with a second solenoid valve 6, and each second branch pipeline 5 is provided with a third solenoid valve 7. These solenoid valves are connected to a controller, and the controller controls the opening sequence of the solenoid valves according to the type of exhaust gas.

[0060] The spray module is connected to the collection module and is used for spraying and neutralizing the waste gas input from the collection module. The system comprises a plurality of reactors 1, which are interconnected through pipelines, and each pipeline is provided with a first solenoid valve 2.

[0061] The spray module generates spray liquid to spray and neutralize the waste gas. By controlling the first solenoid valve 2, the order in which the waste gas passes through the reactor 1 can be flexibly adjusted so that the mixed waste gas can be treated by different spray liquids to achieve an efficient waste gas treatment effect.

[0062] Main purpose: capture and neutralize acidic gases, organic solvent vapors and other harmful gases. Use liquid medicine (such as sodium hydroxide NaOH solution) to react chemically with acidic gases in the exhaust gas to convert them into harmless or weaker compounds.

[0063] The opening sequence of the first solenoid valve 2 , the second solenoid valve 6 and the third solenoid valve 7 is adjusted intelligently.

[0064] By simply inputting the specific exhaust gas type, the controller can flexibly control the opening state of the corresponding solenoid valve to achieve intelligent control. The design of this system allows precise control of the exhaust gas treatment process to meet the treatment needs of different types of exhaust gas and improve treatment efficiency and effect. Through the intelligent control system, the treatment process can be automatically adjusted according to the specific composition of the exhaust gas, achieving more flexible and efficient exhaust gas treatment.

[0065] In this embodiment, a discharge module is also included. The discharge module is connected to the spray module and is used to discharge the gas after the reaction. A gas concentration detection alarm is provided on the discharge module.

[0066] The emission module is equipped with a gas concentration detection alarm, so that each waste gas in the exhaust gas can be detected, and the exhaust gas will be discharged only when the exhaust gas components meet the standards. In actual applications, multiple required gas concentration detection alarms will be set up, so that the corresponding exhaust gas concentration can be accurately detected. The exhaust gas flows upward and fully contacts the descending spray liquid (liquid), and the acidic gas (such as HCl, SO2, NOx, etc.) reacts with the alkaline solution, a neutralization reaction occurs, and the corresponding salt compounds are generated.

[0067] Right now,

[0068] A gas concentration detection alarm is provided to detect the concentration of various pollutants in the exhaust gas. Ensure that the exhaust gas meets environmental protection standards before being discharged to avoid pollution to the environment. It is capable of detecting various pollutants in the exhaust gas, including but not limited to acidic gases (such as HCl, SO2, NOx, etc.). When the concentration of the detected pollutant exceeds the set safety threshold, the alarm will sound an alarm to prompt the operator to take appropriate measures. In actual applications, multiple gas concentration detection alarms may be set to ensure that the corresponding exhaust gas concentration can be accurately detected. The exhaust gas flows upward and fully contacts the descending spray liquid (liquid) to ensure that the pollutants in the exhaust gas fully react with the liquid. Acidic gases (such as HCl, SO2, NOx, etc.) in the exhaust gas react with alkaline solutions (such as sodium hydroxide NaOH solution) to neutralize. The neutralization reaction generates corresponding salt compounds, which are usually more stable than the original acidic gas and have less impact on the environment.

[0069] Through such a design, the emission module not only ensures the efficiency and effect of exhaust gas treatment, but also improves the safety and environmental protection of the system. Through intelligent control and precise detection, the entire system can flexibly respond to different exhaust gas treatment requirements and achieve efficient, safe and environmentally friendly exhaust gas treatment.

[0070] The treated gas should be tested before discharge to confirm that its various indicators meet the emission standards stipulated by the local environmental protection department.

[0071] Gases that meet the standards are discharged into the atmosphere through chimneys or pipelines, while gases that do not meet the standards need to be returned for treatment or further purified using other treatment methods.

[0072] In this embodiment, a waste liquid recovery module is also included, which is connected to the bottom of the reactor 1.

[0073] The waste liquid recovery module is used to recover the spray liquid so that the spray liquid containing waste gas can be discharged after treatment.

[0074] In this embodiment, the reactor 1 includes a spray head 8 and a plurality of packing layers 9 . The spray head 8 is disposed on the top of the reactor 1 , and the plurality of packing layers 9 are distributed from top to bottom along the height direction of the reactor 1 .

[0075] Since the spray head 8 is arranged at the top, the exhaust gas that can be transmitted from bottom to top can be sprayed better, wherein the packing layer 9 can better fully treat the exhaust gas.

[0076] Right now,

[0077] The packing layer 9 is distributed from top to bottom along the height direction of the reactor 1 and filled inside the reactor 1 to increase the contact surface area and time of the exhaust gas and the spray liquid, thereby improving the treatment efficiency.

[0078] The spray head 8 evenly sprays the spray liquid into the reactor 1 to ensure that the waste gas is fully in contact with the spray liquid. The uniform spraying can improve the reaction efficiency between the waste gas and the spray liquid and promote the neutralization reaction.

[0079] The packing layer 9 provides additional surface area, so that the exhaust gas and the spray liquid have more contact opportunities, thereby improving the treatment efficiency.

[0080] The presence of the packing layer 9 prolongs the residence time of the exhaust gas in the reactor 1, which is conducive to a more thorough neutralization reaction.

[0081] The design of the packing layer 9 can promote full contact between gas and liquid, improve mass transfer efficiency, and make pollutants in the exhaust gas more effectively absorbed and neutralized by the spray liquid. The exhaust gas enters from the bottom of the reactor 1 and flows upward. The rising exhaust gas contacts the spray liquid sprayed from the top spray head 8 and starts a neutralization reaction. When the exhaust gas passes through the packing layer 9, it further contacts and reacts with the spray liquid. The design of the packing layer 9 helps to improve the efficiency of this process.

[0082] Reactor 1 can treat the exhaust gas more effectively, ensuring that the pollutants in the exhaust gas are removed to the maximum extent, thereby meeting environmental emission standards. This design not only improves the efficiency of exhaust gas treatment, but also enhances the system's processing capacity, enabling it to adapt to different working conditions and changes in exhaust gas composition.

[0083] The mixed gas that has undergone preliminary reaction in the packing layer 9 will pass through the packing layer 9, further increasing the gas-liquid contact area and improving the reaction efficiency.

[0084] In this embodiment, environmentally friendly balls are placed on the packing layer 9 .

[0085] In this embodiment, an anti-fog plate is provided on the top of the reactor 1, and the exhaust gas treated by the packing layer 9 is discharged through the anti-fog plate.

[0086] The anti-mist plate can remove the water vapor from the treated exhaust gas before it is discharged. That is, the demister plate is used to intercept the small droplets carried by the exhaust gas to prevent the droplets from being discharged with the gas, thus ensuring that the outlet gas is clean.

[0087] In this embodiment, the discharge module includes a circulation pool 10 and a wastewater treatment pool, the circulation pool 10 and the wastewater treatment pool are respectively connected to the bottom of the reactor 1, the circulation pool 10 is used to receive the secondary spray liquid after the waste gas is treated, and the secondary spray liquid flows back to the spray head 8.

[0088] The circulation pool 10 is used to reuse the spray liquid that can still be used for spraying. In actual applications, whether to continue to circulate the spray liquid is determined by detecting the state of the spray liquid at the bottom of the reactor 1. When it cannot be recycled, the wastewater treatment pool at the bottom of the reactor 1 is opened to transfer the waste liquid to the wastewater treatment pool.

[0089] The wastewater treatment tank comprises a neutralization unit 11, a sedimentation unit 12 and a filtration unit 13 which are sequentially arranged along the flow direction of the wastewater.

[0090] The neutralization unit 11 is used to perform a second neutralization reaction on the treated wastewater to achieve the effect of recycling the wastewater.

[0091] The precipitation unit 12 is used to perform a precipitation reaction on the wastewater that produces precipitation after the neutralization reaction;

[0092] The filtering unit 13 filters the wastewater with the precipitate to remove impurities.

[0093] Saturated or ineffective alkali solution needs to be sent to the wastewater treatment pool, and then discharged or recycled after neutralization, sedimentation, filtration and other treatment steps.

[0094] Right now,

[0095] The circulation pool 10 is connected to the bottom of the reactor 1 and is used to receive the secondary spray liquid after treating the exhaust gas. The wastewater treatment pool is also connected to the bottom of the reactor 1 and is used to treat the waste liquid that cannot be recycled. When the spray liquid cannot be recycled, the waste liquid is transferred to the wastewater treatment pool.

[0096] The neutralization unit 11 performs a second neutralization reaction on the treated wastewater to achieve the effect of recycling the wastewater.

[0097] The precipitation unit 12 performs a precipitation reaction on the wastewater that generates precipitation after the neutralization reaction.

[0098] The filtering unit 13 filters the wastewater with the precipitate to remove impurities.

[0099] Wastewater treatment process: The wastewater first enters the neutralization unit 11 for neutralization reaction, adjusts the pH value, and reduces the corrosiveness and toxicity of the wastewater. The neutralized wastewater enters the precipitation unit 12 to precipitate the solid matter generated by the reaction. The precipitated wastewater enters the filtration unit 13 to further remove suspended matter and impurities and improve the clarity of the wastewater.

[0100] After neutralization, sedimentation and filtration, wastewater can be directly discharged into the environment if it meets the discharge standards. If the wastewater still has a certain utilization value after treatment, it can be recycled and reused.

[0101] In this embodiment, the spray head 8 is a double-head spray head, and the double-head spray head 8 rotates.

[0102] The double-headed spray head can produce a better spraying effect. The multiple spray heads 8 located at the top of the tower evenly spray the pre-prepared alkaline solution downward to form dense alkaline solution droplets.

[0103] In this embodiment, a pH meter, a flow meter and a pressure meter are also provided in the reactor 1.

[0104] The pH meter, flow meter and pressure meter are used to detect the pH, flow and pressure of the spray liquid respectively. When the requirements are not met, the state of the spray liquid is adjusted in time. The pH value, flow, pressure and other parameters of the spray liquid are measured regularly to monitor the effect of the entire treatment process and adjust the concentration and flow rate of the alkali solution according to actual needs.

[0105] In this embodiment, the spray module further includes a liquid medicine tank 15, and the liquid medicine tank 15 inputs liquid into the spray module through a self-priming gas-liquid mixing pump.

[0106] Regularly check the maintenance and replacement of components such as pumps, nozzles, packing, and demister plates to ensure the normal operation of the equipment.

[0107] The above waste gas treatment devices can effectively purify tin plating waste gas, reduce harm to the environment, reduce corrosion of surrounding equipment, and reduce occupational health risks of operators.

[0108] The above-mentioned waste gas treatment system uses a fluoroplastic horizontal water pump to pump wastewater, and uses a glass fiber reinforced plastic variable frequency centrifugal fan to discharge the treated gas. The entire device is connected by pipes into a waste gas treatment system, which is welded by pipes. An inspection port and an observation window are left above the reactor 1. The pipes involved are PPR pipes, which transport alkali liquid to the spray head 8 from the reaction box through a self-priming gas-liquid mixing pump. The alkali liquid reacts chemically with the acidic gas in the waste gas, converting it into harmless or weaker compounds, and the purified gas is discharged into the air through the glass fiber reinforced plastic variable frequency centrifugal fan.

[0109] For example, the reaction box body is composed of a 2000x2000mm cylinder, which is connected to the spray head 8 through a pipe inside, with 400x400 air inlets and outlets reserved on both sides, a 300mm diameter observation window reserved in the front, a 1000mm diameter inspection port reserved on the top, and a DN80 reflux port reserved at the bottom of the reaction box. The liquid tank is next to the reactor 1, and the liquid is supplied to the spray head 8 through a DN40PPR pipe through a self-priming gas-liquid mixing pump, and is connected to an 11KW fiberglass variable frequency centrifugal fan through a flange flexible connector.

[0110] For ease of use, the switches of the FRP variable frequency centrifugal fan, self-priming gas-liquid mixing pump, and electromagnetic valve are controlled by an electrical box, and the electrical box area is divided into an indicator light area, an inverter display area, and a switch area.

[0111] The relevant control panel is visible Figure 5 .

[0112] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0113] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0114] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0115] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust gas treatment system, characterized in that: include: Collection module; A spray module is connected to the collection module and is used to spray and neutralize the waste gas input from the collection module. The spray module includes a plurality of reactors, each reactor is interconnected through a pipeline and each pipeline is provided with a first solenoid valve. The collection module includes a main pipeline, the main pipeline collects the exhaust gas of the corresponding workshop through a plurality of first branch pipelines, the main pipeline is connected to the corresponding reactors through a plurality of second branch pipelines, each first branch pipeline is provided with a second solenoid valve, each second branch pipeline is provided with a third solenoid valve, The first solenoid valve, the second solenoid valve and the third solenoid valve are respectively connected to a controller, and the controller controls the opening sequence of the solenoid valves according to the type of exhaust gas to control the reactor through which the exhaust gas flows.

2. The exhaust gas treatment system according to claim 1, characterized in that: It also includes a discharge module, which is connected to the spray module and is used to discharge the gas after the reaction. The discharge module is provided with a gas concentration detection alarm.

3. The exhaust gas treatment system according to claim 2, characterized in that: It also includes a waste liquid recovery module, which is connected to the bottom of the reactor.

4. The exhaust gas treatment system according to claim 1, characterized in that: The reactor comprises a spray head and a plurality of packing layers. The spray head is arranged on the top of the reactor. The plurality of packing layers are distributed from top to bottom along the height direction of the reactor.

5. The exhaust gas treatment system according to claim 4, characterized in that: Environmental protection balls are placed on the packing layer.

6. The exhaust gas treatment system according to claim 4, characterized in that: An anti-fog plate is arranged on the top of the reactor, and the waste gas treated by the packing layer is discharged through the anti-fog plate.

7. The exhaust gas treatment system according to claim 6, characterized in that: The discharge module includes a circulation pool and a wastewater treatment pool, the circulation pool and the wastewater treatment pool are respectively connected to the bottom of the reactor, the circulation pool is used to receive the secondary spray liquid after the waste gas is treated, and the secondary spray liquid flows back to the spray head, The wastewater treatment tank comprises a neutralization unit, a sedimentation unit and a filtration unit which are sequentially arranged along the flow direction of the wastewater.

8. The exhaust gas treatment system according to claim 7, characterized in that: The spray head is a double-head spray head, and the double-head spray head rotates.

9. The exhaust gas treatment system according to claim 2, characterized in that: The reactor is also provided with a pH meter, a flow meter and a pressure meter.

10. The exhaust gas treatment system according to claim 1, characterized in that: The spray module also includes a liquid medicine tank, and the liquid medicine tank is fed into the spray module through a self-priming gas-liquid mixing pump.

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