Waste gas treatment equipment

Abstract

The invention provides waste gas treatment equipment, and relates to the technical field of waste gas treatment.The waste gas treatment equipment is provided with a water level monitoring device, and the water level monitoring device comprises a connecting piece, a water level monitoring pipe and a controllable switch. Wherein the connecting piece comprises a first passage communicated with the water level monitoring pipe and the water tank and a second passage communicated with the water level monitoring pipe and the nitrogen pipeline, and a controllable switch is arranged on the nitrogen pipeline. With the adoption of the structure, when the waste gas treatment equipment works, the controllable switch can be opened or closed according to the control signal, so that the nitrogen pipeline purges nitrogen into the water level monitoring pipe through the second passage under the condition that the controllable switch is opened, and water vapor in the water level monitoring pipe is blown away; and misjudgment of a sensor in the water level monitoring pipe caused by falling of water drops condensed by water vapor in the water level monitoring pipe is avoided, and stable operation of equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly to waste gas treatment equipment. Background Art

[0002] Waste gas treatment equipment is used to purify waste gas. In traditional technologies, the waste gas treatment equipment includes a reaction furnace, a spray tower, a water tank, multiple sets of connectors and connecting hoses. The reaction furnace is the core part of waste gas treatment, mainly used for high-temperature pyrolysis of harmful components in waste gas. The spray tower is used to wash the waste gas after high-temperature pyrolysis to remove particulate matter and pollutants. After the waste gas enters the spray tower, it comes into full contact with the circulating water, and the pollutants and particulate matter dissolve in the water or chemically react with the absorbent to reduce the emission concentration. The water tank is used to provide the above-mentioned spray water, and the water level in the water tank is monitored through a sensor arranged on the water level monitoring pipe. The automatic regulation of water inlet and drainage is realized through the feedback signal of the sensor to ensure the continuous operation of the system.

[0003] When the equipment is in use, the average temperature of the water tank is 30°C - 40°C, while the core temperature in the reaction furnace is as high as several hundred degrees Celsius. After the equipment door panel is covered, the temperature of the inner frame of the equipment is higher than that of the water tank. The inconsistent internal and external temperatures result in a temperature difference, which causes the water vapor existing inside the water level monitoring pipe to condense into water droplets and fall off, causing misjudgment of the sensor, resulting in the generation of downtime water vapor and the alarm shutdown of the equipment, shortening the operation time of the equipment and affecting the use effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a waste gas treatment equipment to overcome the problem that the sensor for water level monitoring in traditional technologies is prone to misjudgment, resulting in abnormal downtime of the equipment and inability to be used normally.

[0005] In a first aspect, a waste gas treatment equipment includes: a water tank and a water level monitoring device; The water level monitoring device includes a connector, a water level monitoring pipe and a controllable switch; The connector includes a first passage connecting the water level monitoring pipe and the water tank, and a second passage connecting the water level monitoring pipe and a nitrogen gas pipeline, and the controllable switch is arranged on the nitrogen gas pipeline; A sensor for monitoring the water level of the water tank is arranged on the water level monitoring pipe; Wherein, the controllable switch is opened or closed according to a control signal, so that when the controllable switch is in the open state, the nitrogen gas pipeline purges nitrogen gas into the water level monitoring pipe through the second passage.

[0006] In one embodiment, the connector includes a tee joint and an elbow pipe; The first end of the tee joint is connected to the water level monitoring pipe, the second end is connected to the water tank through the elbow pipe, and the first end and the third end of the tee joint are on a straight line; The third end of the tee joint is connected to the nitrogen gas pipeline.

[0007] In one embodiment, a diffuser for guiding flow is provided at the connection between the first end of the tee joint and the water level monitoring pipe.

[0008] In one embodiment, internal thread joints are provided at both the first end and the second end of the tee joint, and the first end and the second end of the tee joint are respectively connected to the water level monitoring pipe and the water tank through the internal thread joints.

[0009] In one embodiment, the controllable switch adopts an electromagnetic induction valve. In one embodiment, the controllable switch is connected to the third end of the tee joint by a quick connector. In one embodiment, when the number of the sensors is multiple, the heights corresponding to the positions where the sensors are located are different.

[0010] In one embodiment, the water level monitoring device further includes: A triggering device, connected to the control end of the controllable switch, for outputting a control signal to the controllable switch under the condition of meeting a preset condition, so as to open or close the controllable switch.

[0011] In one embodiment, the waste gas treatment equipment further includes: A reaction furnace for pyrolyzing waste gas at high temperature; A spray tower for washing the waste gas pyrolyzed at high temperature by using the spray water provided by the water tank; A water supply system, connected to the sensor, automatically adjusting the water inlet and drainage of the water tank according to the water level feedback by the sensor. In one embodiment, the waste gas treatment equipment includes a circulation pump and a circulation water supply pipeline; The circulation pump is used to pump the water in the water tank to the spray tower through the circulation water supply pipeline.

[0012] The above waste gas treatment equipment has at least the following advantages: The exhaust gas treatment equipment of the present application is provided with a water level monitoring device, which includes a connecting piece, a water level monitoring pipe and a controllable switch. Among them, the connecting piece includes a first passage connecting the water level monitoring pipe and the water tank, and a second passage connecting the water level monitoring pipe and the nitrogen gas pipeline. A controllable switch is provided on the nitrogen gas pipeline. With the above structure, when the exhaust gas treatment equipment of the present application works, the controllable switch can be opened or closed according to a control signal, so that when the controllable switch is in the open state, the nitrogen gas pipeline blows nitrogen into the water level monitoring pipe through the second passage to disperse the water vapor in the water level monitoring pipe, avoiding the misjudgment of the sensor caused by the water droplets condensed from the water vapor in the water level monitoring pipe and ensuring the stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural block diagram of the exhaust gas treatment equipment in an embodiment; Figure 2 is a schematic structural diagram of the exhaust gas treatment equipment in an embodiment; Figure 3 is Figure 2 the schematic structural diagram of A in

[0014] REFERENCE NUMERALS: 1, reaction furnace; 2, spray tower; 3, water tank; 4, water level monitoring device; 5, water level monitoring pipe; 6, controllable switch; 7, sensor; 8, tee joint; 9, elbow pipe; 10, internal thread joint; 11, circulation pump; 12, circulating water supply pipeline; 13, equipment fixing frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0017] When using "including", "having", and "comprising" described herein, unless a clear limiting term is used, such as "only", "consisting of", etc., another component can also be added. Unless otherwise mentioned, terms in the singular form can include the plural form and should not be construed as having a quantity of one.

[0018] It should be understood that although terms such as "first" and "second" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

[0019] In the present application, unless otherwise clearly specified and defined, terms such as "connected" and "coupled" should be understood in a broad sense. For example, it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0020] Please refer to Figure 1 , in one embodiment, an exhaust gas treatment device is provided. The exhaust gas treatment device includes a reaction furnace 1, a spray tower 2, a water tank 3, and a water level monitoring device 4.

[0021] The reaction furnace 1 is used for high-temperature pyrolysis or oxidation of harmful components in the exhaust gas.

[0022] The spray tower 2 is used for washing the exhaust gas after high-temperature pyrolysis to remove particulate matter and / or pollutants in the exhaust gas, where the pollutants include acidic pollutants and alkaline pollutants.

[0023] The water tank 3 is used to provide spray water for the spray tower 2. After the exhaust gas enters the spray tower 2, the water in the spray tower 2 comes into full contact with the exhaust gas through the spraying action. The pollutants and particulate matter dissolve in the water or react chemically with the absorbent, reducing the emission concentration.

[0024] The water level monitoring device 4 is used to monitor the water level in the water tank 3.

[0025] Please refer to Figure 2 and Figure 3 , optionally, the water level monitoring device 4 includes a connecting member, a water level monitoring pipe 5, and a controllable switch 6.

[0026] The connecting member includes a first passage connecting the water level monitoring pipe 5 and the water tank 3, and a second passage connecting the water level monitoring pipe 5 and the nitrogen gas pipeline. A controllable switch 6 is provided on the nitrogen gas pipeline. Among them, the first passage is used to realize the intercommunication between the water level monitoring pipe 5 and the water tank 3, so that the water level in the water level monitoring pipe 5 is flush with the water level in the water tank 3. In this way, by monitoring the water level in the water level monitoring pipe 5, the water level in the water tank 3 can be known. If the water level in the water level monitoring pipe 5 is too low, the water inlet operation is performed; if the water level in the water level monitoring pipe 5 is too high, the drainage operation is performed. It should be understood that the first passage is in a normally open state. A controllable switch 6 is provided on the nitrogen gas pipeline. In this way, when the controllable switch 6 is in the open state, the second passage can achieve the interconnection between the water level monitoring pipe 5 and the nitrogen gas pipeline. That is, when the controllable switch 6 is open, the nitrogen gas pipeline is enabled, and the water vapor in the water level monitoring pipe 5 is purged through the second passage to avoid misoperation of the water level monitoring device 4 caused by the formation of water droplets in the water level monitoring pipe 5.

[0027] Furthermore, the waste gas treatment equipment of the present application further includes: a nitrogen gas control system.

[0028] The nitrogen gas control system is used to output a control signal to the controllable switch 6 to open or close the controllable switch 6.

[0029] Please refer to Figure 2 , furthermore, the water level monitoring device 4 further includes: at least one sensor 7.

[0030] The sensor 7 is used to monitor the water level in the water tank 3. The sensor 7 is arranged on the water level monitoring pipe 5, and when the number of sensors 7 is multiple, the height positions of the sensors 7 on the water level monitoring pipe 5 are different. It should be noted that different models of sensors 7 are selected according to different installation positions. Generally speaking, sensors for detecting liquid interfaces adopt contact electrodes, capacitance or float principles. Exemplarily, each sensor 7 is arranged on the outer wall of the water level monitoring pipe 5. At this time, a capacitance sensor can be used for the sensor 7. When the water level in the water level monitoring pipe 5 reaches the installation position of the sensor 7, the capacitance value of the capacitance sensor changes, and this change is converted into an electrical signal and fed back to the control system to determine that the water level has changed. Exemplarily, each sensor 7 can also be arranged on the inner wall of the water level monitoring pipe 5. At this time, a contact electrode water level sensor can be used for the sensor 7. When the water level rises to the installation position of the sensor 7, the electrodes of the sensor are conducted under the action of water as a conductive medium, and this conversion state is converted into an electrical signal and fed back to the control system to be used to judge the change of the water level in the water level monitoring pipe.

[0031] The number of sensors 7 is multiple and is used to monitor the water levels at different heights. Exemplarily, in the embodiment of the present application, four sensors 7 are provided, and each sensor 7 is along the height direction of the water level monitoring pipe 5, see Figure 2As shown in the figure, from bottom to top, they are respectively denoted as sensor a, sensor b, sensor c, and sensor d. Among them, sensor a is used to monitor the lowest water level. When the water level in the water level monitoring pipe 5 is lower than this position, it is considered that the water level in the water tank 3 is too low and the water inlet should be started immediately; sensor b is used to monitor whether the water level in the water level monitoring pipe 5 reaches the safe range and whether it can be used normally; sensor c is used to monitor whether to stop the water inlet, that is, when the water level reaches the height corresponding to sensor c, the water inlet is immediately stopped to prevent the water level in the water tank 3 from exceeding the safe range; sensor d is used to monitor the highest water level. When the water level is monitored to be higher than this position, the drainage is immediately started to avoid water overflow due to too high water level, affecting the normal operation of the waste gas treatment equipment.

[0032] The above-mentioned multiple sensors 7 cooperate with each other to form a complete water level monitoring chain. The system can automatically adjust the water inlet and drainage of the water tank 3 according to the actual water level state, so as to realize the safety monitoring of the water level in the water tank 3 and ensure the safe operation of the waste gas treatment equipment.

[0033] Optionally, when using sensors to monitor the water level of the water tank, in order to avoid the sensors being mis-triggered due to environmental fluctuations or short-term abnormal signals, the embodiments of the present application have adopted various methods for processing. Exemplarily, after obtaining the signals of the sensors, a filtering algorithm is also used to smooth the above signals to filter out short-term interference signals. Exemplarily, a time threshold can also be preset in advance, and only when the duration of the above signals exceeds this time threshold, the signals are considered valid; Exemplarily, a number threshold limit can also be added on the basis of the time threshold limit, and only when the duration of the above signals exceeds the time threshold and / or the number threshold, the signals are considered valid.

[0034] Optionally, the waste gas treatment equipment further includes a water supply system.

[0035] The water supply system is connected to the sensors and automatically adjusts the water inlet and drainage of the water tank according to the water level feedback by the sensors.

[0036] Optionally, the water supply system includes a water inlet pump, a water inlet pipe, a drainage pump, and a drainage pipe. Through the mutual cooperation of the above components, automatic water inlet or drainage is realized.

[0037] Please refer to Figure 3 , optionally, the connector includes a tee joint 8 and a bent pipe 9.

[0038] The tee joint 8 includes three ports. Among them, the first end of the tee joint 8 is connected to the water level monitoring pipe 5, and the second end is connected to the water tank 3 through the bent pipe 9; the third end of the tee joint 8 is connected to the nitrogen gas pipeline. That is, the first path is formed between the first end and the second end of the tee joint 8, and the second path is formed between the first end and the third end of the tee joint 8.

[0039] Optionally, the first end and the third end of the tee joint 8 are located on a straight line. With this structure, when the controllable switch 6 is opened, the nitrogen gas pipeline can directly purge the inside of the water level monitoring pipe 5 through the second passage, thereby achieving a better purging effect, preventing water droplets from condensing and falling, and avoiding misoperation and equipment failure. With the design of the elbow pipe 9, the dispersion of the gas path by the first passage can also be avoided, which affects the purging effect.

[0040] Optionally, a diffuser for guiding the flow is provided at the connection between the first end of the tee joint 8 and the water level monitoring pipe 5. With this structure, the airflow entering the water level monitoring pipe 5 can be evenly distributed, so as to more effectively sweep away the water vapor that may condense on the inner wall of the water level monitoring pipe 5 and prevent local water droplets from remaining.

[0041] Optionally, the first end and the second end of the tee joint 8 are respectively connected to the water level monitoring pipe 5 and the water tank 3 through internal thread joints 10. With this structure, the stability and sealing of the connection ports can be ensured. Further, the third end of the tee joint 8 can also be connected to the nitrogen gas pipeline through an internal thread joint 10. Exemplarily, please refer to Figure 3 , Figure 3 shown as Figure 2 a partial enlarged view of A in. An internal thread joint 10 is connected to the third end of the tee joint 8. One end of the internal thread joint 10 is connected to the third end of the tee joint 8, and the other end is connected to the controllable switch 6.

[0042] Optionally, the controllable switch 6 adopts an electromagnetic induction valve, which can be opened or closed by controlling a signal. It should be understood that the electromagnetic induction valve in the embodiment of the present application is a normally closed switch. In this way, during normal waste gas treatment, the electromagnetic induction valve is in the closed state without any operation. When it is necessary to remove the water vapor in the water level monitoring pipe 5, a control signal is input to the electromagnetic induction valve to open it. At this time, the nitrogen gas pipeline can purge the water level monitoring pipe 5 through the second passage. Optionally, the controllable switch 6 is connected to the third end of the tee joint 8 by a quick connector. Then, in the case where an internal thread joint 10 is connected to the third end of the tee joint 8, one end of the internal thread is connected to the third end of the tee joint 8, and the other end is connected to one end of the quick connector. The other end of the quick connector is connected to the controllable switch 6. With the above structure, on the premise of ensuring the stability and sealing of the connection ports, the quick installation and disassembly of the controllable switch 6 can be facilitated, and the flexibility and maintainability of the equipment are improved. Optionally, the above water level monitoring device further includes: a triggering device.

[0043] The triggering device is connected to the control end of the controllable switch 6 and is used to output a control signal to the control end of the controllable switch 6 when a preset condition is met, so as to open or close the controllable switch 6.

[0044] Optionally, the determination method for meeting the preset conditions includes: if the timing time reaches the preset time, it is considered that the preset conditions are met. It should be noted that the above-mentioned preset time is set according to the actual application situation. Exemplarily, when the water vapor formation speed in the water level monitoring tube 5 is relatively fast, the preset time can be shortened; when the water vapor formation speed in the water level monitoring tube 5 is relatively slow, the preset time can be appropriately extended. Through the above-mentioned timed purging, it is possible to effectively prevent the water droplets in the water level monitoring tube 5 from condensing and falling, avoiding misoperations and equipment failures; in addition, the mechanized purging method also reduces manual intervention and has higher reliability. It should be noted that in actual applications, if there is less water vapor in the water level monitoring tube 5, in addition to the periodic purging method, manual purging can also be used, that is, manually turn on the control signal after observing the water vapor. In addition, a combination of automatic and manual methods can also be used, that is, set a relatively long preset time for timed purging, and if water vapor is observed within the preset time, the control signal can also be manually turned on. In other embodiments, other types of controllable switches 6 can also be selected, such as hydraulic control valves, etc.

[0045] Optionally, the waste gas treatment device further includes: a circulation pump 11 and a circulation water supply pipe 12.

[0046] The circulation pump 11 is used to pump the water in the water tank 3 to the spray tower 2 through the circulation water supply pipe 12 according to the water level monitored by the sensor.

[0047] Optionally, the waste gas treatment device further includes: an equipment fixing frame 13.

[0048] The equipment fixing frame 13 is used to fix the waste gas treatment device.

[0049] It should be understood that the above-mentioned waste gas treatment device further includes a plurality of connectors and connecting pipes for connecting each functional unit, enabling the waste gas to flow along the preset path, and at the same time ensuring the airtightness and stability of the equipment. Further, the above-mentioned connectors and connecting pipes are also used to transport makeup water, discharge wastewater or transfer washing liquid to maintain the continuous operation of the system.

[0050] Please refer to Figures 1-3 , the following combines Figure 1 and Figure 3 to elaborate in detail on the working principle of the waste gas treatment device according to the embodiments of the present application: After the waste gas enters the reaction furnace 1, the reaction furnace 1 pyrolyzes the harmful components in the waste gas at high temperature. The waste gas after high-temperature pyrolysis enters the spray tower 2, and the spray water provided by the water tank 3 can wash the harmful gas to further purify the waste gas.

[0051] During the above-mentioned waste gas treatment process, the water level monitoring pipe 5 and the water tank 3 are always connected through the tee joint 8 and the elbow pipe 9, that is, the water level in the water level monitoring pipe 5 is flush with the water level in the water tank 3. At the same time, the sensors a - d arranged on the water level monitoring pipe 5 monitor the water level in the water level monitoring pipe 5 in real time. When it is detected that the water level is lower than the corresponding position of sensor a, it is considered that the water level in the water tank 3 is too low and the water inlet should be started immediately; when it is detected that the water level is higher than the corresponding position of sensor b, it is considered that the water level is within the safe range and can be used normally; when it is detected that the water level is higher than the corresponding position of sensor c, the water inlet is stopped immediately; when it is detected that the water level is higher than the corresponding position of sensor d, the drainage is started immediately.

[0052] During the above-mentioned water level monitoring process, the water level monitoring pipe 5 and the nitrogen gas pipeline are connected through the tee joint 8 and the controllable switch 6. The triggering device outputs a control signal to the control end of the controllable switch 6 after reaching the preset time, so that the controllable switch 6 is opened. When the controllable switch 6 is in the open state, nitrogen gas is blown out from the nitrogen gas pipeline, passes through the controllable switch 6, the tee joint 8 and the diffuser, and evenly covers the inner wall of the water level monitoring pipe 5 to purge the water vapor that may condense.

[0053] Furthermore, this application processes the signals obtained by the above sensors in multiple ways to avoid false triggering caused by environmental fluctuations or short-term abnormal signals. For example, a filtering algorithm is used to smooth the above signals to filter out short-term interference signals. Or time thresholds and count thresholds are set, and the data is considered valid only when the above signals meet the time threshold and / or the count threshold.

[0054] The above waste gas treatment equipment, by setting the tee joint, while keeping the water level monitoring pipe and the water tank connected, connects the nitrogen gas pipeline to the water level monitoring pipe, and a controllable switch is also arranged on the nitrogen gas pipeline. In this way, when the controllable switch responds to the control signal and opens, the nitrogen gas pipeline can purge the condensed water vapor in the water level monitoring pipe, avoiding false judgment of the sensor caused by the condensed water droplets falling, and ensuring the stable operation of the equipment. At the same time, the tee joint is connected to the water level monitoring pipe and the water tank through internal thread joints, ensuring the firmness and sealing of the connection. In addition, the controllable switch is connected to the tee joint by a quick plug joint, which is convenient for quick installation and disassembly, improving the flexibility and maintainability of the equipment.

[0055] Furthermore, for the above waste gas treatment equipment, a diffuser is also arranged at the connection between the tee joint and the water level monitoring pipe, so that the airflow entering the water level monitoring pipe is evenly distributed, thereby more effectively sweeping away the water vapor that may condense on the inner wall of the water level monitoring pipe and preventing local water droplet residues.

[0056] Furthermore, the above-mentioned waste gas treatment equipment processes the signals obtained by the sensor in various ways, avoiding false triggering caused by environmental fluctuations or transient abnormal signals, and further improving safety.

[0057] Please note that the above embodiments are for illustrative purposes only and do not imply any limitation to the present invention.

[0058] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0060] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A waste gas treatment device, characterized in that: include: Water tanks and water level monitoring devices; The water level monitoring device comprises a connecting piece, a water level monitoring tube and a controllable switch; The connecting piece includes a first passage connecting the water level monitoring pipe and the water tank, and a second passage connecting the water level monitoring pipe and a nitrogen pipeline, and the controllable switch is provided on the nitrogen pipeline; The water level monitoring pipe is provided with a sensor for monitoring the water level of the water tank; The controllable switch is opened or closed according to a control signal, so that when the controllable switch is opened, the nitrogen pipeline purges nitrogen into the water level monitoring pipe through the second passage.

2. The device according to claim 1, characterized in that The connecting piece includes a tee joint and an elbow; The first end of the three-way joint is connected to the water level monitoring pipe, and the second end is connected to the water tank through the elbow, and the first end and the third end of the three-way joint are located in a straight line; The third end of the three-way connector is connected to the nitrogen pipeline.

3. The device according to claim 2, characterized in that A diffuser for diverting flow is provided at the connection between the first end of the three-way joint and the water level monitoring pipe.

4. The device according to claim 2, characterized in that The first end and the second end of the three-way joint are both provided with internal thread joints, and the first end and the second end of the three-way joint are respectively connected to the water level monitoring pipe and the water tank through the internal thread joints.

5. The device according to claim 2, characterized in that The controllable switch adopts an electromagnetic induction valve.

6. The device according to claim 5, characterized in that The controllable switch is connected to the third end of the three-way connector by a quick-insert connector.

7. The device according to claim 1, characterized in that When there are multiple sensors, the heights corresponding to the positions of the sensors are different.

8. The device according to claim 7, characterized in that The water level monitoring device further includes: a trigger device connected to the control end of the controllable switch, and configured to output a control signal to the controllable switch when a preset condition is met, so as to turn the controllable switch on or off.

9. The device according to claim 1, characterized in that Also includes: Reactor for high temperature cracking of waste gas; A spray tower, used to wash the waste gas after high-temperature cracking with the spray water provided by the water tank; The water supply system is connected to the sensor and automatically adjusts the water inlet and outlet of the water tank according to the water level fed back by the sensor.

10. The device according to claim 9, characterized in that Also includes: Circulation pump and circulating water supply pipeline; The circulating pump is connected to the spray tower through the circulating water supply pipeline.

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