Electrostatic atomization ammonia gas absorption water curtain test system and working method thereof

Abstract

The invention relates to an electrostatic atomization ammonia gas absorption water curtain test system which comprises a gas distribution system, a wind tunnel system, an electrostatic atomization water curtain system, a measurement and control system, a camera shooting system, a tail gas waste liquid treatment system and a purging system. The gas distribution system provides ammonia gas for the test; the test section of the wind tunnel system is used for carrying out an electrostatic atomization water curtain test; the electrostatic atomization water curtain system is used for performing electrostatic atomization on water to form spray and absorbing ammonia gas; the measurement and control system is used for measuring ammonia gas concentration; and the camera system is used for shooting photos of the form change of ammonia absorbed by the spray in the test section, the flow field track microscopic characteristics and the transient evolution process at a high speed, and storing and analyzing the photos. The system can enhance the absorption efficiency of the water curtain on ammonia gas, and can simulate and capture microscopic characteristics such as form change, flow field track and the like and transient evolution process of the microscopic characteristics when the ammonia gas is absorbed by electrostatic atomization.

Description

Technical Field

[0001] The invention relates to the technical field of water curtain protection, and in particular to an electrostatic atomization ammonia absorption water curtain test system and a working method thereof. Background Art

[0002] With its high energy density and zero carbon emission characteristics, ammonia shows broad market prospects as a high-quality carrier of hydrogen energy and renewable resources. As a carrier of energy storage and hydrogen storage, ammonia has a variety of technical options, and as a carbon-free compound, its combustion products are pure and can be used as a clean energy. Initially, ammonia was mainly used as chemical raw materials, such as nitric acid, refrigerants, and nitrogen fertilizers. In recent years, with the rapid development of the ammonia energy industry, research on its synthesis, storage, transportation, and new energy applications has become increasingly extensive. In the future, the ammonia energy route will transition to a green energy-synthetic ammonia-cracking hydrogen production / direct ammonia-terminal scenario energy structure, forming a series of ammonia energy industry chains.

[0003] Compared with hydrogen, ammonia is more convenient to store and transport, and has significant intrinsic safety performance. Therefore, it is regarded as one of the potential zero-carbon energy paths to promote energy transformation, social progress and even national development strategies. Although ammonia as a hydrogen storage medium is much less flammable and explosive than hydrogen, as a hazardous chemical with a strong pungent odor and toxicity, accidental leakage of ammonia during storage and transportation can have serious consequences. In order to effectively reduce the risk of personal injury that may be caused by ammonia leakage and ensure economic benefits, the only effective method currently used by the industry is the water curtain spray system. This method has the advantages of being economical and reliable. Its principle is to dilute the ammonia concentration and hinder the diffusion of ammonia clouds through tiny droplets atomized by a water curtain nozzle.

[0004] The Chinese patent application number CN202221675373.5 discloses a device for recycling and treating ammonia gas using a water curtain containing a curing agent. The device prepares liquid water containing a curing agent and stores it in a liquid storage tank. The mixed liquid is sprayed out in the form of a water curtain using a nozzle. The curing agent-containing water curtain reacts quickly with ammonia gas to form ammonia-containing solid particles. The ammonia-containing solid particles are stable, and the ammonia gas will not decompose and escape autonomously. Then, the ammonia-containing solid particles are collected to complete the recovery and treatment of ammonia gas. The Chinese patent application number CN202210648876.1 discloses a fire water curtain spray system and a spray method for treating liquid ammonia leakage. The system includes a water source area and a liquid ammonia area arranged on the ground. The water source area and the liquid ammonia area are connected by a pump. The pump sends water from the water source area to the bottom of the liquid ammonia area to form a bottom-up covering fire water curtain spray system, thereby maximally diluting the leaked liquid ammonia and preventing ammonia gas from escaping.

[0005] However, the existing water curtain spray system generally has the disadvantage of low absorption efficiency. One of the main reasons is that due to the limitation of existing technology, the droplet size is usually kept at tens of microns or more, resulting in a small gas-liquid contact area. In addition, the existing technology lacks a test system for absorbing ammonia through water curtain spraying to conduct relevant research on water curtain spraying ammonia absorption technology. Summary of the invention

[0006] The purpose of the present invention is to provide an electrostatic atomization ammonia absorption water curtain test system and a working method thereof, which can enhance the absorption efficiency of ammonia by the water curtain, and can simulate and capture the microscopic characteristics such as morphological changes, flow field trajectories and their transient evolution process during electrostatic atomization absorption of ammonia.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electrostatic atomization ammonia absorption water curtain test system, including an air distribution system, a wind tunnel system, an electrostatic atomization water curtain system, a measurement and control system, a camera system, an exhaust gas and waste liquid treatment system and a purge system; The air distribution system is connected to the wind tunnel system to provide ammonia required for the test; The wind tunnel system is composed of a power section, a diffusion section, a stable section, a contraction section and a test section connected in sequence, wherein the power section is used to provide airflow power, a fan is provided in the power section, and the speed is controlled by a variable frequency speed regulator to adjust the wind speed, a honeycomb and a damping net are provided in the stable section, the honeycomb is used to comb and guide the airflow, the damping net is used to reduce the turbulence intensity of the airflow in the stable section, the contraction section is used to prevent the airflow from separating when it hits the wall, and the test section is used to conduct an electrostatic atomization water curtain test; The electrostatic atomization water curtain system comprises an injection pump, an electrostatic generator, a power amplifier, an electrostatic nozzle and a grounding electrode plate, wherein the electrostatic nozzle is mounted on the side wall of the test section, and the grounding electrode plate is arranged on the inner side wall of the test section opposite to the electrostatic nozzle. The injection pump injects water into the electrostatic nozzle, the output end of the electrostatic generator is connected to the input end of the power amplifier, and the output end of the power amplifier is connected to the electrostatic nozzle to supply power to the electrostatic nozzle, and the electrostatic nozzle electrostatically atomizes the water to form a spray and absorbs ammonia before falling onto the grounding electrode plate; The measurement and control system includes a mobile measurement frame I, a mobile measurement frame II, a gas measurement and control module I and a gas measurement and control module II. The mobile measurement frame I and the mobile measurement frame II are arranged in the test section in front and behind. The gas measurement and control module I and the gas measurement and control module II respectively measure and record the ammonia concentration at the position of the mobile measurement frame I and the mobile measurement frame II; The camera system includes a laser generator, a high-speed camera and an image acquisition computer. The laser generator is used to provide laser light for inducing fluorescence generation. The high-speed camera is used to take high-speed photos of the morphological changes, flow field trajectory microscopic characteristics and transient evolution process of the spray absorbing ammonia in the test section. The image acquisition computer is connected to the high-speed camera and is used to store and analyze the photos taken by the high-speed camera. The tail gas and waste liquid treatment system is connected to the drain outlet and the exhaust outlet of the test section to treat the waste liquid and tail gas after the test; The purge system is connected to the wind tunnel system and is used for purging the entire system.

[0008] Furthermore, the gas distribution system includes an ammonia cylinder, an electric valve I and a gas mass flow controller I. The ammonia cylinder is connected to the gas mass flow controller I via the electric valve I. The gas mass flow controller I is used to control the ammonia flow rate, and its output is connected to the power section of the wind tunnel system.

[0009] Furthermore, the electrostatic atomization water curtain system also includes an oscilloscope, which is connected to the voltage and current monitoring port of the power amplifier for monitoring voltage and current signals; the positive pole of the power amplifier is connected to the electrostatic nozzle to power it, and the negative pole of the power amplifier is grounded.

[0010] Furthermore, the laser generator and the high-speed camera are arranged opposite to each other on two sides outside the test section; the high-speed camera is connected to a high-power lens, and the high-power lens is connected to a filter for selectively absorbing specific excitation fluorescence.

[0011] Furthermore, a drain outlet is provided at the bottom of the test section, and an exhaust outlet is provided at the rear end of the test section; the exhaust gas and waste liquid treatment system includes a stop valve, a waste liquid tank and an exhaust gas treatment tank, and the drain outlet is connected to the waste liquid tank via the stop valve to discharge the waste liquid in the test section into the waste liquid tank; the exhaust outlet is connected to the exhaust gas treatment tank to discharge the exhaust gas of the test into the exhaust gas treatment tank, and the exhaust gas treatment tank is equipped with alkaline solution for absorbing the exhaust gas generated by the test.

[0012] Furthermore, the purge system includes a nitrogen bottle, an electric valve II and a gas mass flow controller II. The nitrogen bottle is connected to the gas mass flow controller II via the electric valve II. The gas mass flow controller II is used to control the nitrogen flow rate, and its output is connected to the power section of the wind tunnel system.

[0013] Furthermore, it also includes an industrial computer, which is electrically connected to the variable frequency speed regulator to control the frequency setting of the variable frequency speed regulator. The industrial computer is also electrically connected to the air distribution system and the purge system to control the operation of the air distribution system and the purge system.

[0014] The present invention also provides a working method of the electrostatic atomization ammonia absorption water curtain test system, comprising the following steps: 1) Load the aqueous solution composed of deionized water and fluorescent particles into the syringe pump; 2) The industrial computer controls the frequency converter to set a certain frequency, and turns on the purge system to purge the entire system; after the purge is completed, the purge system is turned off; 3) Turn on the camera system and adjust the laser generator and high-speed camera to make the image acquisition computer clear; turn on the electrostatic generator and power amplifier and set the relevant electric field parameters according to the test requirements; the industrial computer controls the variable frequency speed regulator to set a certain frequency, and turns on the air distribution system to introduce a certain flow of ammonia into the wind tunnel system; 4) The injection pump injects the aqueous solution into the electrostatic nozzle, which electrostatically atomizes the water to form a spray and absorbs ammonia; 5) The measurement and control system measures the ammonia concentration before and after spraying through gas measurement and control module I and gas measurement and control module II. The high-speed camera takes high-speed photos of the morphological changes, flow field trajectory microscopic characteristics and transient evolution process of the spray absorbing ammonia in the test section and stores them in the image acquisition computer; 6) Open the tail gas and waste liquid treatment system to discharge the waste liquid and tail gas after the test; then close the tail gas and waste liquid treatment system and the gas distribution system; 7) Open the purge system and purge the entire system; after the purge is completed, close the purge system; 8) The industrial computer controls the gas distribution system to change the ammonia flow rate, controls the frequency converter to change the frequency to change the wind speed, and changes the electric field parameters of the electrostatic generator and the power amplifier. Then repeat steps 4)-7) to conduct electrostatic atomization ammonia water curtain tests under different flow rates, wind speeds, and electric field parameters and conduct related research.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides an electrostatic atomization ammonia absorption water curtain test system and its working method, which cleverly utilizes the electrostatic field effect to promote the liquid to disperse into finer droplets, thereby greatly increasing the contact area between gas and liquid, diluting the concentration of ammonia, and significantly enhancing the absorption efficiency of ammonia by the water curtain; at the same time, by using high-speed camera technology, optical amplification technology, and laser-induced fluorescence technology, the microscopic characteristics such as morphological changes and flow field trajectories during electrostatic atomization absorption of ammonia and its transient evolution process can be simulated and captured, and the water curtain absorption effect can be tested by regulating ammonia flow, wind speed, electric field parameters, etc., to provide basic data for in-depth theoretical research on the electrostatic atomization ammonia absorption water curtain test system. By accurately controlling the electric field parameters through the electrostatic generator and the power amplifier, the variation law of ammonia concentration under different spray modes can be studied; by adjusting the opening of the electric valve of the gas distribution system, the influence of the microscopic characteristics of ammonia absorption of different flow rates and concentrations and their transient evolution laws of the spray can be accurately analyzed, which provides a scientific basis for revealing the mechanism of electrostatic atomization absorption of ammonia and designing a new type of high-efficiency water curtain spray system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the system structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] like Figure 1As shown, this embodiment provides an electrostatic atomization ammonia absorption water curtain test system, including an air distribution system, a wind tunnel system, an electrostatic atomization water curtain system, a measurement and control system, a camera system, an exhaust gas and waste liquid treatment system, and a purge system. The basic principle of this system is to break the liquid into smaller droplets through the electrostatic field effect, increase the gas-liquid contact area, and enhance the water curtain absorption effect. Based on high-speed camera technology, optical amplification technology, and laser-induced fluorescence technology, the microscopic characteristics and evolution process of electrostatic atomization absorption of ammonia, such as morphological changes and flow field trajectories, are studied, and the influence of spray absorption of ammonia under different voltages is studied.

[0021] The gas distribution system is connected to the wind tunnel system to provide ammonia required for the test. Specifically, the gas distribution system includes an ammonia cylinder 1, an electric valve 12 and a gas mass flow controller 13, wherein the ammonia cylinder 1 is connected to the gas mass flow controller 13 via the electric valve 12, and the gas mass flow controller 13 is used to control the flow of ammonia, and its output is connected to the power section 9 of the wind tunnel system.

[0022] The wind tunnel system consists of a power section 9, a diffusion section 11, a stable section 14, a contraction section 21 and a test section 31 which are connected in sequence. The power section 9 is used to provide airflow power. A fan 10 is provided in the power section 9, and the speed is controlled by a variable frequency speed regulator 7 to adjust the wind speed. The diffusion section 11 is connected between the power section 9 and the stable section 14, and plays a connecting role. A honeycomb 12 and a damping net 13 are provided in the stable section 14. The honeycomb 12 is used to comb and guide the airflow. The damping net 13 is used to reduce the turbulence intensity of the airflow in the stable section. The contraction section 21 is used to prevent the airflow from separating when it hits a wall. The test section 31 is used to conduct an electrostatic atomization water curtain test.

[0023] The electrostatic atomization water curtain system comprises an injection pump 18, an electrostatic generator 29, a power amplifier 30, an electrostatic nozzle 19 and a grounding electrode plate 15. The electrostatic nozzle 19 is installed on the side wall of the test section 31. The grounding electrode plate 15 is arranged on the inner wall of the test section 31 opposite to the electrostatic nozzle 19 and is grounded. The injection pump 18 injects water into the electrostatic nozzle 19. The output end of the electrostatic generator 29 is connected to the input end of the power amplifier 30. The output end of the power amplifier 30 is connected to the electrostatic nozzle 19. The electrostatic nozzle (19) is powered after adjusting the electric field parameters through the electrostatic generator 29 and the power amplifier 30. The electrostatic nozzle 19 electrostatically atomizes the water to form a spray and absorbs ammonia gas and then falls on the grounding electrode plate 15. The electrostatic atomization water curtain system also comprises an oscilloscope 28. The oscilloscope 28 is connected to the voltage and current monitoring port of the power amplifier 30 for monitoring voltage and current signals. The positive pole of the power amplifier 30 is connected to the electrostatic nozzle 19 to power it, and the negative pole of the power amplifier 30 is grounded.

[0024] The measurement and control system comprises a moving test frame I 20, a moving test frame II 27, a gas measurement and control module I 16 and a gas measurement and control module II 34, wherein the moving test frame I 20 and the moving test frame II 27 are arranged in the test section 31, and the gas measurement and control module I 16 and the gas measurement and control module II 34 respectively measure and record the ammonia concentration on the moving test frame I 20 and the moving test frame II 27 positions. The moving test frame plays the role of bearing and moving the gas measurement and control module in the wind tunnel system. The moving test frame I 20 and the moving test frame II 27 can be moved to the designated position in the test section 31 of the wind tunnel system according to the needs of the experiment. The gas measurement and control module is composed of a diaphragm pump, a highly sensitive gas sensor and a control unit. The diaphragm pump is installed on the corresponding moving test frame, and a small part of ammonia is sucked out by the diaphragm pump. The gas sensor can detect the ammonia concentration information and convert it into a digital signal, which is transmitted to the control unit.

[0025] The camera system includes a laser generator 24, a high-speed camera 17 and an image acquisition computer 26. The laser generator 24 is used to provide laser light for inducing fluorescence. The high-speed camera 17 is used to take high-speed photos of the morphological changes, flow field trajectory microscopic characteristics and transient evolution process of the spray absorbing ammonia in the test section 31. The image acquisition computer 26 is connected to the high-speed camera 17 and is used to store and analyze the photos taken by the high-speed camera 17. Specifically, the laser generator 24 and the high-speed camera 17 are arranged on both sides of the outside of the test section 31. The high-power lens 23 is connected to the high-power lens 23, and the filter 22 is connected to the high-power lens 23 for selectively absorbing specific excitation fluorescence.

[0026] The exhaust gas and waste liquid treatment system is connected to the drain port 25 and the exhaust port of the test section 31 to treat the waste liquid and exhaust gas after the test. Specifically, the bottom of the test section 31 is provided with a drain port 25, and the rear end of the test section 31 is provided with an exhaust port; the exhaust gas and waste liquid treatment system includes a stop valve 33, a waste liquid tank 35 and an exhaust gas treatment tank 32, and the drain port 25 is connected to the waste liquid tank 35 through the stop valve 33 to discharge the waste liquid in the test section 31 into the waste liquid tank 35; the exhaust port is connected to the exhaust gas treatment tank 32 to discharge the exhaust gas of the test into the exhaust gas treatment tank 32, and the exhaust gas treatment tank 32 is equipped with alkaline solution for absorbing the exhaust gas generated by the test.

[0027] The purge system is connected to the wind tunnel system and is used to purge the entire system. Specifically, the purge system includes a nitrogen bottle 4, an electric valve II 5 and a gas mass flow controller II 6. The nitrogen bottle 4 is connected to the gas mass flow controller II 6 via the electric valve II 5. The gas mass flow controller II 6 is used to control the nitrogen flow rate, and its output is connected to the power section 9 of the wind tunnel system.

[0028] The electrostatic atomization ammonia absorption water curtain test system also includes an industrial computer 8, which is electrically connected to the frequency converter 7 to control the frequency setting of the frequency converter 7. The industrial computer 8 is also electrically connected to the air distribution system and the purge system to control the operation of the air distribution system and the purge system.

[0029] This embodiment also provides a working method of the electrostatic atomization ammonia absorption water curtain test system, comprising the following steps: 1) Load an aqueous solution composed of deionized water and fluorescent particles into the syringe pump 18.

[0030] 2) The industrial computer 8 controls the variable frequency speed regulator 7 to set a certain frequency to adjust the fan speed; at the same time, the electric valve II 5 of the purge system is opened, and the gas mass flow controller II 6 is adjusted to set a certain flow rate to purge the entire system with nitrogen; after the purge is completed, the purge system is closed.

[0031] 3) Turn on the camera system and adjust the laser generator 24 and the high-speed camera 17 to make the image acquisition computer 26 have clear images. Turn on the electrostatic generator 29, set reasonable electric field parameters according to the specific requirements of the test, then turn on the oscilloscope 28, and then turn on the power amplifier 30, and set the electric field parameters of the power amplifier 30 reasonably according to the test requirements. The industrial computer 8 controls the variable frequency speed regulator 7 to set a certain frequency, and opens the electric valve I2 of the gas distribution system, adjusts the gas mass flow controller I3 to set a certain flow, and introduces a certain flow of ammonia into the wind tunnel system.

[0032] 4) The injection pump 18 injects the aqueous solution into the electrostatic nozzle 19, which electrostatically atomizes the water to form a spray and absorbs ammonia.

[0033] 5) The measurement and control system measures the change in ammonia concentration before and after spraying through the gas measurement and control module I 16 and the gas measurement and control module II 34. The high-speed camera 17 takes high-speed photos of the morphological changes, flow field trajectory microscopic characteristics and transient evolution process of the spray absorbing ammonia in the test section 31 and stores them in the image acquisition computer 26.

[0034] 6) Open the exhaust gas and waste liquid treatment system to discharge the waste liquid and exhaust gas after the test; then close the exhaust gas and waste liquid treatment system and the gas distribution system.

[0035] 7) Open the purge system and purge the entire system; after purge, close the purge system.

[0036] 8) The industrial computer 8 controls the air distribution system to change the ammonia flow rate, controls the frequency converter 7 to change the frequency to change the wind speed, and simultaneously changes the electric field parameters of the electrostatic generator 29 and the power amplifier 30, and then repeats steps 4)-7) to conduct an electrostatic atomization ammonia absorption water curtain test under different flow rates, wind speeds, and electric field parameters and conducts related research, including the microscopic characteristics of the morphological changes of the water mist in the electrostatic atomization ammonia absorption water curtain test system when absorbing ammonia and the optimal water curtain absorption effect.

[0037] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. An electrostatic atomization ammonia absorption water curtain test system, characterized in that: It includes air distribution system, wind tunnel system, electrostatic atomization water curtain system, measurement and control system, camera system, tail gas and waste liquid treatment system and purge system; The air distribution system is connected to the wind tunnel system to provide ammonia required for the test; The wind tunnel system is composed of a power section (9), a diffusion section (11), a stabilization section (14), a contraction section (21), and a test section (31) connected in sequence, wherein the power section (9) is used to provide airflow power, a fan (10) is provided in the power section (9), and the speed is controlled by a variable frequency speed regulator (7) to adjust the wind speed, a honeycomb (12) and a damping net (13) are provided in the stabilization section (14), the honeycomb (12) is used to comb and guide the airflow, the damping net (13) is used to reduce the turbulence intensity of the airflow in the stabilization section, the contraction section (21) is used to prevent the airflow from separating when it hits a wall, and the test section (31) is used to perform an electrostatic atomization water curtain test; The electrostatic atomization water curtain system comprises an injection pump (18), an electrostatic generator (29), a power amplifier (30), an electrostatic nozzle (19) and a grounding electrode plate (15); the electrostatic nozzle (19) is mounted on a side wall of a test section (31); the grounding electrode plate (15) is arranged on an inner wall of the test section (31) opposite to the electrostatic nozzle (19); the injection pump (18) injects water into the electrostatic nozzle (19); the output end of the electrostatic generator (29) is connected to the input end of the power amplifier (30); the output end of the power amplifier (30) is connected to the electrostatic nozzle (19) to supply power to the electrostatic nozzle (19); the electrostatic nozzle (19) electrostatically atomizes the water to form a spray and absorbs ammonia before falling onto the grounding electrode plate (15); The measurement and control system comprises a moving measurement frame I (20), a moving measurement frame II (27), a gas measurement and control module I (16) and a gas measurement and control module II (34); the moving measurement frame I (20) and the moving measurement frame II (27) are arranged in front and back in the test section (31); the gas measurement and control module I (16) and the gas measurement and control module II (34) respectively measure and record the ammonia concentration at the positions of the moving measurement frame I (20) and the moving measurement frame II (27); The camera system comprises a laser generator (24), a high-speed camera (17) and an image acquisition computer (26), wherein the laser generator (24) is used to provide laser light for inducing fluorescence generation, the high-speed camera (17) is used to take high-speed photos of the morphological changes, flow field trajectory microscopic characteristics and transient evolution process of the spray absorbing ammonia in the test section (31), and the image acquisition computer (26) is connected to the high-speed camera (17) and is used to store and analyze the photos taken by the high-speed camera (17); The tail gas and waste liquid treatment system is connected to the drain port (25) and the exhaust port of the test section (31) to treat the waste liquid and tail gas after the test; The purge system is connected to the wind tunnel system and is used for purging the entire system.

2. The electrostatic atomization ammonia absorption water curtain test system according to claim 1 is characterized in that: The gas distribution system comprises an ammonia cylinder (1), an electric valve I (2) and a gas mass flow controller I (3). The ammonia cylinder (1) is connected to the gas mass flow controller I (3) via the electric valve I (2). The gas mass flow controller I (3) is used to control the flow of ammonia, and its output is connected to a power section (9) of a wind tunnel system.

3. The electrostatic atomization ammonia absorption water curtain test system according to claim 1 is characterized in that: The electrostatic atomization water curtain system further comprises an oscilloscope (28), which is connected to the voltage and current monitoring port of the power amplifier (30) and is used to monitor voltage and current signals; the positive electrode of the power amplifier (30) is connected to the electrostatic nozzle (19) to supply power thereto, and the negative electrode of the power amplifier (30) is grounded.

4. The electrostatic atomization ammonia absorption water curtain test system according to claim 1 is characterized in that: The laser generator (24) and the high-speed camera (17) are arranged opposite to each other on two sides outside the test section (31); the high-speed camera (17) is connected to a high-power lens (23), and the high-power lens (23) is connected to a filter (22) for selectively absorbing specific excitation fluorescence.

5. The electrostatic atomization ammonia absorption water curtain test system according to claim 1 is characterized in that: The bottom of the test section (31) is provided with a drain port (25), and the rear end of the test section (31) is provided with an exhaust port; the exhaust gas and waste liquid treatment system comprises a stop valve (33), a waste liquid tank (35) and an exhaust gas treatment tank (32); the drain port (25) is connected to the waste liquid tank (35) via the stop valve (33) to discharge the waste liquid in the test section (31) into the waste liquid tank (35); the exhaust port is connected to the exhaust gas treatment tank (32) to discharge the exhaust gas of the test into the exhaust gas treatment tank (32); the exhaust gas treatment tank (32) is provided with an alkali solution for absorbing the exhaust gas generated by the test.

6. The electrostatic atomization ammonia absorption water curtain test system according to claim 1 is characterized in that: The purge system comprises a nitrogen bottle (4), an electric valve II (5) and a gas mass flow controller II (6); the nitrogen bottle (4) is connected to the gas mass flow controller II (6) via the electric valve II (5); the gas mass flow controller II (6) is used to control the nitrogen flow rate, and its output is connected to the power section (9) of the wind tunnel system.

7. The electrostatic atomization ammonia absorption water curtain test system according to claim 1 is characterized in that: It also includes an industrial control computer (8), the industrial control computer (8) being electrically connected to the variable frequency speed regulator (7) to control the variable frequency speed regulator (7) to set the frequency, and the industrial control computer (8) being electrically connected to the gas distribution system and the purge system to control the operation of the gas distribution system and the purge system.

8. The working method of the electrostatic atomization ammonia absorption water curtain test system according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) loading an aqueous solution prepared from deionized water and fluorescent particles into a syringe pump (18); 2) The industrial computer (8) controls the variable frequency speed regulator (7) to set a certain frequency, and turns on the purge system to purge the entire system; after the purge is completed, the purge system is turned off; 3) Turn on the camera system and adjust the laser generator (24) and the high-speed camera (17) so that the image acquisition computer (26) can clearly image; turn on the electrostatic generator (29) and the power amplifier (30) and set the relevant electric field parameters according to the test requirements; the industrial computer (8) controls the variable frequency speed regulator (7) to set a certain frequency, and turns on the air distribution system to introduce a certain flow of ammonia into the wind tunnel system; 4) The injection pump (18) injects the aqueous solution into the electrostatic nozzle (19), and the electrostatic nozzle (19) electrostatically atomizes the water to form a spray and absorbs ammonia; 5) The measurement and control system measures the ammonia concentration before and after spraying through the gas measurement and control module I (16) and the gas measurement and control module II (34), and the high-speed camera (17) takes high-speed photos of the morphological changes, flow field trajectory microscopic characteristics and transient evolution process of the spray absorbing ammonia in the test section (31) and stores them in the image acquisition computer (26); 6) Open the tail gas and waste liquid treatment system to discharge the waste liquid and tail gas after the test; then close the tail gas and waste liquid treatment system and the gas distribution system; 7) Open the purge system and purge the entire system; after the purge is completed, close the purge system; 8) The industrial computer (8) controls the air distribution system to change the ammonia flow rate, controls the variable frequency speed regulator (7) to change the frequency to change the wind speed, and simultaneously changes the electric field parameters of the electrostatic generator (29) and the power amplifier (30), and then repeats steps 4)-7) to conduct electrostatic atomization ammonia absorption water curtain tests under different flow rates, wind speeds, and electric field parameters and conduct related research.

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