An exhaust gas on-line humidifying and static electricity removing device

Abstract

The application discloses an exhaust gas on-line humidification and static electricity elimination device, which comprises an exhaust gas humidification control device; the exhaust gas humidification control device comprises an exhaust gas pipe, a water supply pipe, a water inlet electric regulating valve, an air volume display instrument, a humidity display instrument, a signal line, a humidification control box, an air volume instrument probe, a hygrometer probe, a water supply inlet, an exhaust gas inlet, an exhaust gas outlet and a nozzle; further, the application further comprises a humidified waste water collecting device. The application is used on an organic exhaust gas collecting and conveying pipeline, can on-line detect the humidity of the exhaust gas, can humidify the organic exhaust gas according to the humidity, can eliminate the generation of static electricity of the organic exhaust gas, can collect and automatically discharge the humidified waste liquid while eliminating the generation of static electricity, can realize automatic operation and unmanned operation, and can solve the problem of the safety hidden danger that the static electricity may cause explosion in the organic exhaust gas conveying process.

Description

Technical Field

[0001] This invention belongs to the field of organic waste gas treatment, and particularly relates to a waste gas humidification and static electricity removal device. Background Technology

[0002] my country is a major producer of pharmaceuticals, fine chemicals, and chemical synthesis. Particularly in pharmaceutical manufacturing enterprises, the waste gases are complex, typically multi-component mixtures, and often exhibit flammability and explosiveness. In waste gas treatment and transportation facilities, when the concentration of organic waste gas exceeds the lower explosive limit and an ignition source is present, an explosion of the organic waste gas pipeline system can easily occur.

[0003] The aforementioned ignition sources are primarily caused by static electricity. Static electricity is invisible and intangible, making it an invisible trigger for accidents. There are various methods to eliminate static electricity, such as static grounding, adding antistatic additives, static neutralizers, and process control methods. In China, most practices employ static grounding and process control methods. However, due to the large number of chemical materials used in the pharmaceutical and fine chemical industries, the resulting organic waste gases are complex in composition and often corrosive. Therefore, to address the impact of corrosiveness on the material of waste gas pipelines, fiberglass and PE pipes with antistatic properties are typically used. However, this can lead to problems such as poor static conductivity and failure of static-sensitive equipment. This necessitates controlling static electricity at its source and preventing its generation in order to safely and effectively solve the fundamental problem.

[0004] How can we control and eliminate static electricity at its source?

[0005] From the perspective of eliminating the hazards of static electricity, the solution is to increase the humidity in the exhaust gas to eliminate the accumulation of static charge. Empirical data and engineering application data show that maintaining a relative humidity above 60% and below 80% is effective in eliminating the accumulation of static charge.

[0006] Currently, there are no reports in existing technologies regarding suitable online humidification and static electricity removal equipment for organic waste gas that can be installed on organic waste gas collection and transportation pipelines. Therefore, in order to increase the humidity in waste gas, it is necessary to develop an online humidification device for waste gas to monitor and control the humidity in the waste gas. By monitoring whether the humidity in the waste gas meets the requirements, the device can automatically adjust the humidity in the waste gas, eliminate static electricity generated during the waste gas transportation process, and simultaneously collect and automatically discharge the humidification waste liquid. This device can achieve automated operation and unmanned operation, thereby preventing fire and explosion accidents and enabling automated operation. Summary of the Invention

[0007] The purpose of this invention is to provide an online humidification and static electricity removal device for waste gas and a method for online humidification and static electricity removal for waste gas, so as to solve the technical problem of static electricity easily generated during the pipeline transportation of organic waste gas after collection.

[0008] To solve the above-mentioned technical problems, the specific technical solution of the online humidification and static electricity removal equipment for exhaust gas of the present invention is as follows:

[0009] An online humidification and static electricity removal device for exhaust gas includes an exhaust gas humidification control device; the exhaust gas humidification control device includes an exhaust gas pipe, a water supply pipe, an electric water inlet regulating valve, an air volume display, a humidity display, a signal line, a humidification control box, an air volume meter probe, a humidity meter probe, a water supply inlet, an exhaust gas inlet, an exhaust gas outlet, and a nozzle; the nozzle end is provided with spray holes; the spray holes are arranged in an equilateral triangle;

[0010] The exhaust gas inlet of the exhaust gas pipe is lower than the exhaust gas outlet;

[0011] The top of the exhaust pipe is provided with three flange ports for connecting to the water supply pipe, the air volume meter probe, and the hygrometer probe, respectively.

[0012] The airflow meter probe is installed on the exhaust gas inlet side; the airflow meter probe is inserted into the exhaust gas pipe; the airflow meter probe and the exhaust gas pipe are connected by a flange; the airflow meter probe is connected to the airflow display instrument via a signal line; the airflow display instrument is connected to the humidification control box via a signal line.

[0013] The hygrometer probe is installed on the exhaust gas outlet side; the hygrometer probe is inserted into the exhaust gas pipe; the hygrometer probe and the exhaust gas pipe are connected by a flange; the hygrometer probe is connected to a humidity display instrument via a signal line; the humidity display instrument is connected to a humidification control box via a signal line.

[0014] The nozzle is installed between the airflow meter probe and the hygrometer probe; the nozzle is connected to the water supply pipe; the nozzle is introduced into the exhaust gas pipe; the water supply pipe and the exhaust gas pipe are connected by a flange; an electric water inlet regulating valve is installed between the nozzle and the water inlet of the water supply pipe; the electric water inlet regulating valve is connected to the humidification control box via a signal line.

[0015] Furthermore, the diameter of the inlet electric regulating valve can be calculated and determined according to the actual situation; preferably, it is DN25.

[0016] Furthermore, the diameter of the water supply pipe can be calculated and determined according to the actual situation; preferably, it is DN25.

[0017] Furthermore, the diameter of the exhaust pipe can be calculated and determined based on actual conditions.

[0018] Preferably, the water inlet electric regulating valve is an explosion-proof electric proportional regulating valve.

[0019] Preferably, the slope of the exhaust pipe is between 10‰ and 15‰; at this angle, the automatic atomization effect of the nozzle is optimal.

[0020] Preferably, the inlet electric regulating valve is made of stainless steel.

[0021] Preferably, the water inlet electric regulating valve has a dustproof and waterproof rating of IP65.

[0022] Preferably, the water supply pipe is made of stainless steel.

[0023] Preferably, the humidification control box is an explosion-proof cabinet.

[0024] Preferably, the humidification control box is made of stainless steel.

[0025] Preferably, the anemometer probe and the hygrometer probe are explosion-proof and corrosion-resistant.

[0026] Preferably, the anemometer probe and the hygrometer probe are made of PTFE.

[0027] Preferably, the exhaust gas outlet is made of S304 material.

[0028] Furthermore, the online humidification and static electricity removal equipment for exhaust gas also includes a humidification wastewater collection device; the humidification wastewater collection device is located below the exhaust gas humidification control device.

[0029] The humidification wastewater collection device includes a collection pipe, a wastewater storage tank, a magnetic level gauge, a level display instrument, a wastewater pipe, a signal line, a drain electric switch valve, and a drain control box.

[0030] The bottom of the exhaust pipe is provided with two flange ports for connecting to the liquid collection pipe;

[0031] The wastewater storage tank has two flange ports on the top for connecting to the collection pipe; two flange ports on the side of the wastewater storage tank for connecting to the magnetic level gauge; and a flange port on the bottom of the other side of the wastewater storage tank corresponding to the magnetic level gauge for connecting to the wastewater pipe.

[0032] One side of the liquid collection pipe is connected to the bottom of the waste gas pipe via a flange;

[0033] The other side of the liquid collection pipe is connected to the wastewater storage tank via a flange;

[0034] A wastewater pipe is provided at the bottom of the wastewater storage tank; the wastewater pipe is connected to the wastewater storage tank via a flange; an electric discharge valve is installed between the outlet of the wastewater pipe and the wastewater storage tank.

[0035] A magnetic level gauge is installed on the wastewater storage tank; the magnetic level gauge is connected to the wastewater storage tank via a flange.

[0036] The magnetic level gauge is connected to the level display instrument via a signal line;

[0037] The liquid level display is connected to the drain control box via a signal line;

[0038] The drainage control box is connected to the drainage electric switch valve via a signal line.

[0039] Furthermore, the diameter of the liquid collecting pipe can be calculated and determined according to the actual situation; preferably, it is DN50.

[0040] Furthermore, the diameter of the two flange ports on the top of the wastewater storage tank for connecting to the collection pipe can be calculated and determined according to the actual situation; preferably, it is DN50.

[0041] Furthermore, the diameter of the two flange ports on the side of the wastewater storage tank for connecting with the magnetic level gauge can be calculated and determined according to the actual situation; preferably, it is DN25.

[0042] Furthermore, the diameter of the flange opening for connecting to the wastewater pipe on the bottom of the other side corresponding to the magnetic level gauge of the wastewater storage tank can be calculated and determined according to the actual situation; preferably, it is DN50.

[0043] Preferably, the liquid collecting pipe is made of PTFE-lined steel pipe.

[0044] Preferably, the wastewater storage tank is a steel-lined plastic vertical tank.

[0045] Preferably, the wastewater storage tank has an effective volume of 0.5 m³. 3 .

[0046] Preferably, the magnetic level gauge is made of a material that provides interlocking control signals for high and low liquid levels.

[0047] Furthermore, the diameter of the drain electric switch valve can be calculated and determined according to the actual situation; preferably, it is DN50.

[0048] Preferably, the drain electric switch valve is made of PTFE-lined material.

[0049] Preferably, the drain electric switch valve has a dustproof and waterproof rating of IP65.

[0050] Preferably, the nozzle includes a nozzle connector and a nozzle; the nozzle is connected to the water supply pipe by a threaded connection and is detachable; the nozzle has spray holes; the spray holes are arranged in an equilateral triangle. This achieves an atomization effect, allowing water to be automatically atomized directly from the nozzle (without the need for heating and evaporation, an atomizer, or a steam generator), thereby humidifying the exhaust gas.

[0051] Preferably, the spacing between the spray holes is 0.1-0.5 mm, and most preferably 0.2 mm; at this distance, the automatic atomization effect of the nozzle is the best.

[0052] Preferably, the nozzle can achieve automatic atomization humidification.

[0053] Preferably, the exhaust gas outlet and the exhaust gas main are connected by a flange, and the flanges are connected by copper jumper wires to enhance the discharge of static electricity.

[0054] Preferably, the nozzle is spaced 1-1.5m from the airflow meter probe to prevent moisture from spraying onto the probe and damaging it.

[0055] Preferably, the water quality entering the water supply pipe can be tap water or reclaimed water.

[0056] Preferably, the structure of the online humidification and static electricity removal equipment for exhaust gas is as follows: Figure 1 As shown.

[0057] Preferably, the side view and top view of the nozzle of the online humidification and static electricity removal equipment for exhaust gas are as follows: Figure 2 As shown.

[0058] This invention also provides a method for online humidification and static electricity removal of exhaust gas, comprising the following steps:

[0059] Connect any of the above-mentioned online humidification and static electricity removal equipment for exhaust gas to a 220V power supply; connect the exhaust gas outlet of the equipment to the exhaust gas main pipe; introduce exhaust gas into the exhaust gas inlet of the equipment, and input tap water or reclaimed water with a water pressure of not less than 0.35MPa into the water supply pipe, and the exhaust gas will be automatically humidified by the exhaust gas humidification control device of the equipment.

[0060] And / or, the wastewater pipe of any of the above-mentioned online humidification and static electricity removal equipment for exhaust gas is connected to the sewage pipe network; the humidification wastewater generated during the automatic humidification process of exhaust gas flows into the wastewater storage tank through the collection pipe, and is collected and automatically discharged by the equipment's humidification wastewater collection device, and discharged to the plant's sewage treatment station for treatment.

[0061] This invention also provides another method for online humidification and static electricity removal of exhaust gas, comprising the following steps:

[0062] Automatic exhaust gas humidification steps: acquire humidity and air volume information; perform logical judgment on the acquired humidity and air volume information according to the pre-stored control program to determine whether to open the water inlet electric regulating valve and the opening ratio; generate control commands based on the judgment results; and automatically humidify the exhaust gas according to the control commands.

[0063] Humidification wastewater collection and automatic drainage steps: Obtain liquid level information; perform logical judgment on the obtained liquid level information according to the pre-stored control program to determine whether to open the electric drain valve; generate control command based on the judgment result; automatically drain the humidification wastewater according to the control command.

[0064] Furthermore, according to any of the above-mentioned methods for online humidification and static electricity removal of exhaust gas, the automatic humidification procedure of the exhaust gas humidification control section in the automatic humidification step is as follows: The humidification control box receives a signal from the humidity display instrument, and the control program inside the humidification control box performs logical judgment. When the humidity probe detects that the exhaust gas humidity is lower than 60%, the program set by the humidification controller will run logically, and open the inlet electric regulating valve according to the air volume detected by the air volume meter probe. The opening degree and ratio of the inlet electric regulating valve are automatically adjusted. When the humidity probe detects that the exhaust gas humidity is higher than 80%, the humidification controller stops working.

[0065] Furthermore, according to any of the above-mentioned methods for online humidification and static electricity removal of exhaust gas, the steps for collecting and automatically draining the humidified wastewater are as follows: the drain control box controls the operation of the drain electric switch valve through the liquid level display of the magnetic float liquid level gauge; when the liquid level of the magnetic float liquid level gauge shows a high liquid level, the drain control box sends a command signal to open the drain electric switch valve and drain the wastewater in the wastewater storage tank (8); when the liquid level of the magnetic float liquid level gauge shows a low liquid level, the drain control box sends a command signal to close the drain electric switch valve and stop draining the wastewater in the wastewater storage tank.

[0066] Preferably, the exhaust gas outlet is connected to the exhaust gas main pipe via a flange during use, and copper jumper wires are used between the flanges to enhance the discharge of static electricity.

[0067] The online humidification and static electricity removal equipment for exhaust gas of the present invention has the following advantages:

[0068] 1) This equipment humidifies the organic waste gas to prevent the chemical waste gas from generating static electricity at the source, eliminate ignition sources, and avoid fire and explosion accidents caused by static electricity.

[0069] 2) This equipment can achieve automated operation and unmanned operation;

[0070] 3) This equipment is suitable for workshop and industrial production;

[0071] 4) This equipment can be used on pipelines for conveying large volumes of organic waste gas in workshops or industrial production; the applicant unexpectedly discovered that when the slope of the waste gas pipe is between 10‰ and 15‰, it can collect and gather water mist or water droplets to the storage tank to the greatest extent.

[0072] 5) The spray holes on the nozzle of the online humidification and static electricity removal equipment provided by this device are arranged in an equilateral triangle, so that water can be automatically atomized directly from the nozzle. In particular, the spacing between the spray holes is 0.1-0.5mm, which has a better atomization effect. It does not require heating and evaporation, atomizer, or steam generation equipment to humidify the exhaust gas.

[0073] 6) This equipment has an online monitoring function for exhaust gas humidity. It can automatically humidify the exhaust gas according to its humidity. When the humidity is below 60%, the humidification control box will automatically open the electric water inlet regulating valve, and the high-pressure water will be atomized into fine water mist through the spray head to humidify the exhaust gas. When the humidity is above 80%, the humidification controller will stop working.

[0074] 7) This equipment can also automatically collect and discharge humidification wastewater. While eliminating static electricity, it can also collect and automatically discharge humidification wastewater.

[0075] 8) This equipment is also equipped with double protection – the flange connection of the equipment is equipped with static electricity discharge measures;

[0076] 9) This equipment eliminates static electricity at the source, and the secondary grounding conducts static electricity removal, resulting in a better static electricity elimination effect;

[0077] 10) This equipment can also be flexibly applied with terminal waste gas treatment technologies, such as activated carbon adsorption and regenerative thermal combustion technology, which improves the flexibility and versatility of waste gas treatment methods.

[0078] 11) This equipment has a simple structure, diverse functions, and is practical and effective;

[0079] 12) This equipment is more energy-efficient;

[0080] 13) The device of this invention is easy to use, and can be customized according to the site conditions based on this principle;

[0081] 14) This equipment is more suitable for industrial production and large-scale application, and has greater significance for promotion. Attached Figure Description

[0082] Figure 1 This is a schematic diagram of the structure of the online humidification and static electricity removal equipment for exhaust gas according to the present invention;

[0083] Figure 2 The images show a side view and a top view of the nozzle of the online humidification and static electricity removal device for exhaust gas according to the present invention.

[0084] Figure 1 , Figure 2 The numbers in the diagram represent: 1-exhaust gas pipe, 2-water supply pipe, 3-humidity display, 4-airflow display, 5-humidification control box, 6-liquid level display, 7-drainage control box, 8-wastewater storage tank, 9-collecting pipe, 10-wastewater pipe, 11-magnetic level gauge, 12-electric inlet regulating valve, 13-electric drain valve, 14-signal line, 15-humidity meter probe, 16-spray head, 17-airflow meter probe, 18-water supply inlet, 19-exhaust gas inlet, 20-exhaust gas outlet, 21-spray head connector, 22-spray nozzle, 23-spray hole. Detailed Implementation

[0085] To better understand the purpose, structure, and function of this invention, the following detailed description of an online humidification and static electricity removal device for exhaust gas is provided in conjunction with the accompanying drawings.

[0086] like Figure 1 The diagram shown is a structural schematic of a preferred embodiment of the online humidification and static electricity removal device for exhaust gas proposed in this invention. The device includes an exhaust gas humidification control device and a humidification wastewater collection device; the humidification wastewater collection device is located below the exhaust gas humidification control device.

[0087] The exhaust gas humidification control device includes an exhaust gas pipe 1, an exhaust gas inlet 19, an exhaust gas outlet 20, a water supply pipe 2, a water supply inlet 18, an electric water inlet regulating valve 12, an air volume display 4, a humidity display 3, a signal line 14, a humidification control box 5, a hygrometer probe 15, an air volume meter probe 17, and a nozzle 16.

[0088] The exhaust gas inlet 19 of the exhaust gas pipe 1 is lower than the exhaust gas outlet 20; the installation slope of the exhaust gas pipe 1 is between 10‰ and 15‰.

[0089] The inlet electric regulating valve 12 has a diameter of DN25; the water supply pipe 2 has a diameter of DN25;

[0090] The nozzle 16 includes a nozzle connector 21 and a nozzle 22; the nozzle 16 is connected to the water supply pipe 2 by a threaded connection and is detachable; the nozzle 22 is provided with spray holes 23; the spray holes 23 are arranged in an equilateral triangle; the spacing between the spray holes 23 is 0.2mm;

[0091] The top of the exhaust pipe 1 is provided with three flange ports for connecting to the water supply pipe 2, the air volume meter probe 17 and the humidity meter probe 15 respectively.

[0092] The airflow meter probe 17 is installed on the side of the exhaust gas inlet 19; the airflow meter probe 17 is inserted into the exhaust gas pipe 1; the airflow meter probe 17 and the exhaust gas pipe 1 are connected by a flange; the airflow meter probe 17 is connected to the airflow display 4 via a signal line 14; the airflow display 4 is connected to the humidification control box 5 via a signal line 14; the measured airflow signal is transmitted to the airflow display 4 via the signal line 14, the airflow value is displayed on the airflow display 4, and at the same time, the airflow value is transmitted to the humidification control box 5 via the signal line 14, and the airflow display 4 feeds back the airflow value to the humidification control box 5.

[0093] The hygrometer probe 15 is installed on the side of the exhaust gas outlet 20; the hygrometer probe 15 is inserted into the exhaust gas pipe 1; the hygrometer probe 15 and the exhaust gas pipe 1 are connected by a flange; the hygrometer probe 15 is connected to the humidity display instrument 3 through a signal line 14; the humidity display instrument 3 is connected to the humidification control box 5 through a signal line 14; the detected humidity value is displayed on the humidity display instrument 3, and at the same time, the humidity value is transmitted to the humidification control box 5 through the signal line 14, and the humidity display instrument 3 feeds back the humidity value to the humidification control box 5;

[0094] The nozzle 16 is installed between the airflow meter probe 17 and the hygrometer probe 15 (empirical value: 1-1.5m interval between the nozzle and the airflow meter / probe); the nozzle 16 is connected to the water supply pipe 2; the nozzle 16 is introduced into the exhaust gas pipe 1; the water supply pipe 2 and the exhaust gas pipe 1 are connected by a flange; an electric water inlet regulating valve 12 is installed between the nozzle 16 and the water inlet 18 of the water supply pipe 2; the water inlet regulating valve 12 is connected to the humidification control box 5 via a signal line 14; the atomization humidification of the nozzle 16 is controlled by the humidification control box 5. When the control box 5 receives the signal from the humidity display 3, the humidification control box 5 has a built-in control program that performs logical judgments. When the humidity probe 15 detects that the humidity of the exhaust gas is below 60%, the program set in the humidification control box 5 will run logically. According to the air volume detected by the air volume meter probe 17, the water inlet electric regulating valve 12 will be opened. The opening degree and ratio of the water inlet electric regulating valve 12 can be automatically adjusted. At the same time, the water supply pipe pressure is not lower than 0.35MPa. When the humidity probe 15 detects that the humidity of the exhaust gas is above 80%, the humidification controller 5 will stop working.

[0095] The exhaust gas outlet 20 is connected to the exhaust gas main pipe via a flange during use, and the flanges are connected by copper jumper wires.

[0096] The humidification wastewater collection device is equipped with a collection pipe 9, a wastewater storage tank 8, a magnetic level gauge 11, a level display instrument 6, a signal line 14, a wastewater pipe 10, a drain electric switch valve 13, and a drain control box 7.

[0097] The liquid collection pipe 9 has a diameter of DN50; the drain electric switch valve 13 has a diameter of DN50.

[0098] The bottom of the exhaust pipe 1 is provided with two flange ports for connecting to the liquid collection pipe 9;

[0099] The wastewater storage tank 8 has two DN50 flanges on its top for connecting to the collection pipe 9; the wastewater storage tank 8 has two DN25 flanges on its side for connecting to the magnetic level gauge 11; and the bottom of the other side of the wastewater storage tank 8, corresponding to the magnetic level gauge 11, has a DN50 flange for connecting to the wastewater pipe 10.

[0100] One side of the liquid collection pipe 9 is connected to the bottom of the waste gas pipe 1 via a flange;

[0101] The other side of the liquid collection pipe 9 is connected to the wastewater storage tank 8 via a flange;

[0102] Wastewater pipe 10 is provided at the bottom of the wastewater storage tank 8; the wastewater pipe 10 is connected to the wastewater storage tank 8 by a flange; a discharge electric switch valve 13 is installed between the outlet of the wastewater pipe 10 and the wastewater storage tank 8.

[0103] A magnetic level gauge 11 is installed on the wastewater storage tank 8; the magnetic level gauge 11 is connected to the wastewater storage tank 8 via a flange;

[0104] The magnetic level gauge 11 is connected to the level display instrument 6 via a signal line 14; the magnetic level gauge 11 transmits the level value to the level display instrument 6 via the signal line 14, and the magnetic level gauge 8 can also display the level via the magnetic level.

[0105] The liquid level display 6 is connected to the drain control box 7 via signal line 14; the liquid level display 6 feeds back the liquid level signal to the drain control box 7 via signal line 14.

[0106] The drain control box 7 is connected to the drain electric switch valve 13 via signal line 14. The drain control box 7 controls the operation of the drain electric switch valve 13 through the liquid level display of the magnetic float level gauge 11. When the liquid level of the magnetic float level gauge 11 shows a high liquid level, the drain control box 7 sends a command signal to open the drain electric switch valve 13 to drain the wastewater in the wastewater storage tank 8. When the liquid level of the magnetic float level gauge 11 shows a low liquid level, the drain control box 7 sends a command signal to close the drain electric switch valve 13 to stop draining the wastewater in the wastewater storage tank 8.

[0107] like Figure 2 The image shows a side view and a top view of the nozzle 16 in the online humidification and static electricity removal equipment for exhaust gas proposed in this invention. The nozzle 16 includes a nozzle connector 21 and a nozzle 22. The nozzle 16 is connected to the water supply pipe 2 by a threaded connection and is detachable. The nozzle 22 is provided with spray holes 23. The spray holes 23 are arranged in an equilateral triangle to achieve an atomization effect. The spacing between the spray holes 23 is 0.2 mm.

[0108] The method for online humidification and static electricity removal of exhaust gas according to the present invention includes the following steps:

[0109] Automatic exhaust gas humidification steps: acquire humidity and air volume information; perform logical judgment on the acquired humidity and air volume information according to the pre-stored control program to determine whether to open the water inlet electric regulating valve 12 and the opening ratio; generate control commands based on the judgment results; and automatically humidify the exhaust gas according to the control commands.

[0110] Humidification wastewater collection and automatic drainage steps: Obtain liquid level information; perform logical judgment on the obtained liquid level information according to the pre-stored control program to determine whether to open the electric drain valve 13; generate control command according to the judgment result; automatically drain the humidification wastewater according to the control command.

[0111] The operating method of the above-mentioned online humidification and static electricity removal equipment for exhaust gas includes the following steps:

[0112] 1. The online humidification and static electricity removal equipment for exhaust gas is installed on the main exhaust gas conveying pipeline. When in use, simply plug the humidification control box 5 and the drain control box 7 into a 220V power supply.

[0113] 2. Connect the power supply and check whether the humidification control box 5, the drain control box 7, the liquid level display 6, the air volume display 4, and the humidity display 3 are normal.

[0114] 3. During equipment operation, record the working status of air volume display 4, liquid level display 6, and humidity display 3 daily, and check whether the online humidification and static electricity removal equipment for exhaust gas is humidifying normally;

[0115] 4. Connect the wastewater pipe 10 of the online humidification equipment to the sewage network and discharge it to the factory sewage treatment plant for treatment.

[0116] In addition, the water pressure at the inlet of the water supply pipe 2 of the device of the present invention is required to be no less than 0.35MPa.

[0117] In addition, the water quality of the water supply pipe 2 of the device of the present invention can be tap water or reclaimed water.

[0118] Furthermore, the diameter of the exhaust pipe 1 used in the device of this invention is calculated and determined according to the actual situation, and the pipe size can be adjusted according to the usage requirements.

[0119] In addition, the exhaust gas outlet 20 of the device of the present invention is connected to the exhaust gas main pipe by a flange during use, and copper jumper wires are used between the flanges to enhance the conduction of static electricity.

[0120] The device of this invention is easy to use and can be customized according to the site conditions based on this principle.

[0121] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An online humidification and static electricity removal device for waste gas, characterized in that, Including exhaust gas humidification control devices; The exhaust gas humidification control device includes an exhaust gas pipe (1), a water supply pipe (2), an electric water inlet regulating valve (12), an air volume display (4), a humidity display (3), a signal line (14), a humidification control box (5), an air volume meter probe (17), a hygrometer probe (15), a water supply inlet (18), an exhaust gas inlet (19), an exhaust gas outlet (20), and a nozzle (16); the nozzle (16) is provided with spray holes (23) at its end; the spray holes (23) are arranged in an equilateral triangle; the distance between the spray holes (23) is 0.1-0.5mm; The exhaust gas inlet (19) of the exhaust gas pipe (1) is lower than the exhaust gas outlet (20). The slope of the exhaust pipe (1) is between 10‰ and 15‰. The top of the exhaust pipe (1) is provided with three flange ports for connecting to the water supply pipe (2), the air volume meter probe (17) and the hygrometer probe (15), respectively; The airflow meter probe (17) is installed on the side of the exhaust gas inlet (19); the airflow meter probe (17) is inserted into the exhaust gas pipe (1); the airflow meter probe (17) and the exhaust gas pipe (1) are connected by a flange; the airflow meter probe (17) is connected to the airflow display instrument (4) through a signal line (14); the airflow display instrument (4) is connected to the humidification control box (5) through a signal line (14); The hygrometer probe (15) is installed on the exhaust gas outlet (20) side; the hygrometer probe (15) is inserted into the exhaust gas pipe (1); the hygrometer probe (15) and the exhaust gas pipe (1) are connected by a flange; the hygrometer probe (15) is connected to the humidity display instrument (3) via a signal line (14); the humidity display instrument (3) is connected to the humidification control box (5) via a signal line (14); The nozzle (16) is installed between the air volume meter probe (17) and the hygrometer probe (15); the nozzle (16) is connected to the water supply pipe (2); the nozzle (16) is connected into the exhaust pipe (1); the water supply pipe (2) and the exhaust pipe (1) are connected by a flange; an electric water inlet regulating valve (12) is installed between the nozzle (16) and the water inlet (18) of the water supply pipe (2); The electric regulating valve (12) for water inlet is connected to the humidification control box (5) via a signal line (14).

2. The online humidification and static electricity removal equipment for waste gas according to claim 1, characterized in that, The water inlet electric regulating valve (12) is an explosion-proof electric proportional regulating valve; And / or, the water inlet electric regulating valve (12) is made of stainless steel; And / or, the inlet electric regulating valve (12) has a diameter of DN25; And / or, the water supply pipe (2) has a diameter of DN25; And / or, the water inlet electric regulating valve (12) has a dustproof and waterproof rating of IP65; And / or, the water supply pipe (2) is made of stainless steel; And / or, the humidification control box (5) is an explosion-proof cabinet; And / or, the humidification control box (5) is made of stainless steel; And / or, the anemometer probe (17) and hygrometer probe (15) are explosion-proof and corrosion-resistant; And / or, the anemometer probe (17) and the hygrometer probe (15) are made of PTFE; And / or, the exhaust outlet (20) is made of S304 material.

3. The online humidification and static electricity removal equipment for waste gas according to claim 1, characterized in that, Further includes a humidification wastewater collection device; the humidification wastewater collection device is lower than the exhaust gas humidification control device; the humidification wastewater collection device includes a collection pipe (9), a wastewater storage tank (8), a magnetic float level gauge (11), a level display instrument (6), a wastewater pipe (10), a signal line (14), a drain electric switch valve (13), and a drain control box (7); The bottom of the exhaust pipe (1) is provided with two flange ports for connecting to the liquid collection pipe (9); The wastewater storage tank (8) has two flange ports on its top for connecting to the collection pipe (9); the wastewater storage tank (8) has two flange ports on its side for connecting to the magnetic float level gauge (11); the wastewater storage tank (8) has a flange port on the bottom of the other side corresponding to the magnetic float level gauge (11) for connecting to the wastewater pipe (10); One side of the liquid collection pipe (9) is connected to the bottom of the waste gas pipe (1) via a flange; The other side of the liquid collection pipe (9) is connected to the wastewater storage tank (8) via a flange; Wastewater pipe (10) is provided at the bottom of the wastewater storage tank (8); the wastewater pipe (10) is connected to the wastewater storage tank (8) by a flange; a drain electric switch valve (13) is installed between the outlet of the wastewater pipe (10) and the wastewater storage tank (8). A magnetic level gauge (11) is installed on the wastewater storage tank (8); the magnetic level gauge (11) is connected to the wastewater storage tank (8) via a flange; The magnetic float level gauge (11) is connected to the level display instrument (6) via a signal line (14); The liquid level display (6) is connected to the drain control box (7) via a signal line (14); The drain control box (7) is connected to the drain electric switch valve (13) via a signal line (14).

4. The online humidification and static electricity removal equipment for waste gas according to claim 3, characterized in that, The diameter of the liquid collecting pipe (9) is DN50; And / or, the diameter of the two flange ports provided on the top of the wastewater storage tank (8) for connecting to the collection pipe (9) is DN50; And / or, the diameter of the two flange ports on the side of the wastewater storage tank (8) for connecting to the magnetic level gauge (11) is DN25; And / or, the diameter of a flange port for connecting to the wastewater pipe (10) opened on the bottom of the other side of the wastewater storage tank (8) corresponding to the magnetic float level gauge (11) is DN50; the diameter of the drain electric switch valve (13) is DN50; And / or, the collecting pipe (9) is made of PTFE-lined steel pipe; And / or, the wastewater storage tank (8) is a steel-lined plastic vertical tank; And / or, the wastewater storage tank (8) has an effective volume of 0.5 m³. 3 ; And / or, the drain electric switch valve (13) is made of PTFE-lined material; And / or, the drain electric switch valve (13) is rated IP65 for dust and water resistance.

5. The online humidification and static electricity removal equipment for waste gas according to claim 3, characterized in that, The nozzle (16) includes a nozzle connector (21) and a nozzle (22); the nozzle (16) is connected to the water supply pipe (2) by a threaded connection; the nozzle (22) is provided with spray holes (23); the spray holes are arranged in an equilateral triangle; the spacing between the spray holes is 0.1-0.5mm.

6. The online humidification and static electricity removal equipment for waste gas according to claim 3, characterized in that, The exhaust gas outlet (20) is connected to the exhaust gas main pipe by a flange, and the flanges are connected by copper jumper wires.

7. A method for online humidification and static electricity removal of waste gas, characterized in that, Connect the online humidification and static electricity removal equipment for exhaust gas according to any one of claims 3-6 to a 220V power supply; connect the exhaust gas outlet (20) of the equipment to the exhaust gas main pipe; introduce exhaust gas into the exhaust gas inlet (19) of the equipment, and input tap water or reclaimed water with a water pressure of not less than 0.35MPa into the water supply pipe (2), and automatically humidify the exhaust gas by the exhaust gas humidification control device of the equipment; The wastewater pipe (10) is connected to the sewage pipe network; the humidification wastewater generated during the automatic humidification of exhaust gas flows into the wastewater storage tank (8) through the collection pipe (9), and is collected and automatically discharged by the humidification wastewater collection device of the equipment, and discharged to the sewage station in the plant area for treatment.

8. The method for online humidification and static electricity removal of waste gas according to claim 7, characterized in that, Its features include: Automatic humidification steps for exhaust gas: Obtain humidity and air volume information; perform logical judgment on the obtained humidity and air volume information according to the pre-stored control program to determine whether to open the water inlet electric regulating valve (12) and the opening ratio; generate control instructions according to the judgment results; automatically humidify the exhaust gas according to the control instructions; Humidification wastewater collection and automatic drainage steps: Obtain liquid level information; perform logical judgment on the obtained liquid level information according to the pre-stored control program to determine whether to open the electric drain valve (13); generate control instructions according to the judgment results; automatically drain the humidification wastewater according to the control instructions.

9. The method for online humidification and static electricity removal of waste gas according to claim 7 or 8, characterized in that, The automatic humidification steps for the exhaust gas are as follows: The humidification control box (5) receives the signal from the humidity display instrument (3). The humidification control box (5) has a built-in control program for logical judgment. When the humidity probe (15) detects that the exhaust gas humidity is lower than 60%, the program set by the humidification control box (5) will run logically. According to the air volume detected by the air volume meter probe (17), the water inlet electric regulating valve (12) will be opened. The opening degree and ratio of the water inlet electric regulating valve (12) will be automatically adjusted. When the humidity probe (15) detects that the exhaust gas humidity is higher than 80%, the humidification control box (5) will stop working.

10. The method for online humidification and static electricity removal of waste gas according to claim 7 or 8, characterized in that, The steps for collecting and automatically draining humidified wastewater are as follows: The drain control box (7) controls the operation of the drain electric switch valve (13) by displaying the liquid level of the magnetic float level gauge (11); when the liquid level of the magnetic float level gauge (11) shows a high liquid level, the drain control box (7) sends a command signal to open the drain electric switch valve (13) and drain the wastewater in the wastewater storage tank (8); when the liquid level of the magnetic float level gauge (11) shows a low liquid level, the drain control box (7) sends a command signal to close the drain electric switch valve (13) and stop draining the wastewater in the wastewater storage tank (8).

Images