A generation system, generation method and application for dispersing trace amounts of solids or aerosols in a gas

Abstract

A generation system, generation method and application for dispersing trace amounts of solids or aerosols in a gas state. The system is composed of an atomization chamber, a reflux chamber, a cleaning pump, an atomization pump, a mixing chamber and connecting components therebetween; the upper part of the atomization chamber is connected to the reflux chamber through a porous plate, and the middle part is connected by a reflux channel; an atomization pump is provided below the atomization chamber, a washing liquid pipe is provided between the atomization chamber and the reflux chamber, and a cleaning pump is provided on the washing liquid pipe. The present invention adopts a fixed pressure difference and porous flow limiting method to balance the flow rates of each channel, selects a small amount of the channel fluid as the output, reduces costs, and improves the reliability and practicability of the system. The system provided by the present invention has the advantages of small volume, being convenient to move, matching application conditions, and low cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental aerosols, and more specifically, relates to a technology for generating aerosols of soluble salts. Background Art

[0002] At present, in many technical fields, the influence of aerosols in gases needs to be considered in production and testing applications, such as the weather resistance testing of devices and equipment, biopharmaceuticals, and medical environments. In laboratories, artificial methods are required to generate gases and their aerosols under desired conditions.

[0003] In the field of fuel cells, with the increasing application of fuel cells in vehicles and ships at sea and in ports, the cathode air of the fuel cell stack is affected by salt aerosols with very different conditions from those on land. Under the test conditions required for research, the required aerosol flow rate is generally very small, and the composition ratio needs to be conveniently controlled. The volume of the aerosol generation device also needs to be minimized as much as possible.

[0004] At present, many technologies provide aerosols for various application scenarios. Common methods include: bubbling, wave breaking, and waterfall methods. Among them, the wave breaking method and the waterfall method simulate the effect of waves hitting to form droplets and generate aerosols, but they are large in volume and low in efficiency. The bubbling method forms droplets quickly and is small in volume, but the aerosol parameter regulation items and the variation range are relatively small. Summary of the Invention

[0005] In view of the above problems, the present invention discloses a system for aerosol generation, which has the characteristics that the flow rate and content can be regulated within a large range, is conducive to stably providing specific aerosols, and is also conducive to providing rapidly changing aerosol gas mixtures. Especially for fuel cells, including single-chip testing and finished fuel cell stack application scenarios, it has good adaptability.

[0006] The present invention adopts the following technical solutions:

[0007] A generation system for dispersing trace amounts of solids or aerosols in a gas state is composed of an atomization chamber, a reflux chamber, a cleaning pump, an atomization pump, a mixing chamber, and connecting components therebetween; the upper part of the atomization chamber is connected to the reflux chamber through a porous plate, and the middle part is connected by a reflux channel; an atomization pump is provided below the atomization chamber, a washing liquid pipe is provided between the atomization chamber and the reflux chamber, and a cleaning pump is provided on the washing liquid pipe.

[0008] More specifically, the atomization chamber is composed of an atomization chamber housing and its components. A demister divides the interior of the atomization chamber into an upper atomization chamber and a lower atomization chamber. A liquid level gauge is provided between the upper atomization chamber and the lower atomization chamber.

[0009] The upper chamber of the atomization chamber is connected to the reflux chamber by a perforated plate, and then connected to the lower chamber of the atomization chamber through a reflux channel; an atomization chamber cleaning nozzle and an atomization chamber pressure gauge are provided inside the upper chamber of the atomization chamber.

[0010] The atomization stock solution is stored inside the lower chamber of the atomization chamber. A temperature sensor, a heater, and a stirrer are provided below the lower chamber of the atomization chamber. The atomization nozzle and the liquid replenishing port are located above the liquid level.

[0011] Furthermore, a liquid connection pipe is provided at the bottom of the atomization chamber. The liquid connection pipe is provided with three branches, namely an atomization pipe, a drain pipe, and a washing liquid pipe. The washing liquid pipe is respectively connected to the atomization chamber cleaning nozzle and the reflux chamber cleaning nozzle. The atomization chamber cleaning valve is connected to the atomization chamber cleaning nozzle, and the reflux chamber cleaning valve is connected to the reflux chamber cleaning nozzle. The atomization pipe is connected to the atomization nozzle, and an atomization pump is provided on the atomization pipe.

[0012] Furthermore, the reflux chamber is composed of a reflux chamber housing and its components. The mixing chamber is located above the interior of the reflux chamber. A reflux chamber cleaning nozzle is provided above the mixing chamber. A reflux chamber pressure gauge is provided on the reflux chamber housing, and there is also an air inlet on the reflux chamber. The reflux air duct is located at the bottom of the reflux chamber, and a flow meter and a reflux fan are provided inside the reflux air duct; the mixing chamber housing is connected to the perforated plate, so that the mixing chamber is press-fitted on the perforated plate; a slide valve is provided between the mixing chamber housing and the perforated plate. The mixing chamber also has a balance membrane.

[0013] Furthermore, the slide valve blocks a part of the perforated plate circulation holes to serve as the perforated plate input and output holes, and the opening and closing states of the perforated plate circulation holes are controlled by the sliding of the slide valve.

[0014] Furthermore, the perforated plate can be assembled by slender tubes, and the inner diameter of the slender tubes forms the plate holes.

[0015] Furthermore, the mixing chamber can be arranged horizontally or vertically in the reflux chamber.

[0016] Furthermore, a target gas input port and a mixed gas output port are provided on the mixing chamber housing, and the mixing chamber housing is connected to a mixing chamber pressure gauge. A mixing chamber reflux pipe is provided at the bottom of the mixing chamber to communicate the mixing chamber with the reflux chamber, and a mixing chamber reflux valve is provided on the mixing chamber reflux pipe.

[0017] Another object of the present invention is to claim a method for generating a dispersed trace solid or aerosol in a gas state using the above system:

[0018] The reflux fan pressurizes the gas in the reflux chamber through the reflux air duct and sends it into the lower chamber of the atomization chamber, mixes the droplets generated by the atomization nozzle with the gas, removes the foam through a demister, enters the upper chamber of the atomization chamber to stabilize, is distributed and circulated through the perforated plate to the reflux chamber, and part of the atomized gas is output to the target gas through the open perforated plate output hole as an addition to the target gas, completing the overall cycle;

[0019] After the system runs, aerosol-like substances adhere to and deposit on the inner wall of the device. A cleaning pump is used to transport the atomized stock solution, and the atomizing chamber and the perforated plate are cleaned through the atomizing chamber cleaning valve and the atomizing chamber cleaning nozzle.

[0020] The slide valve and the reflux fan together form a continuous output flow rate, which is 1 to 20 times the output flow rate of the mixing chamber.

[0021] The third object of the present invention is to claim the application of the above system in the field of fuel cells, especially in the fields of single-piece testing and finished fuel cell stack. Description of the Drawings

[0022] Figure 1 , basic structure diagram of the system;

[0023] Figure 2 , schematic diagram of the principle of the perforated plate structure;

[0024] Figure 3 , top view schematic diagram of the mixing chamber structure.

[0025] 10. Atomizing chamber, 11. Upper chamber of the atomizing chamber, 12. Demister, 13. Liquid replenishing port, 14. Lower chamber of the atomizing chamber, 15. Atomized stock solution, 16. Liquid level gauge, 17. Temperature sensor, 18. Heater,

[0026] 21. Cleaning liquid pipe, 22. Cleaning pump, 23. Drain port, 24. Drain valve, 25. Atomizing pump, 26. Atomizing pipe, 27. Stirrer, 28. Atomizing nozzle,

[0027] 31. Reflux port, 32. Flowmeter, 33. Reflux air duct, 34. Reflux fan, 35. Outer shell of the reflux chamber, 36. Reflux chamber, 37. Return pipe of the mixing chamber, 38. Return valve of the mixing chamber,

[0028] 41. Mixed gas output port, 42. Pressure gauge of the mixing chamber, 43. Outer shell of the mixing chamber, 44. Mixing chamber, 441. Inner balance membrane, 442. Outer balance membrane, 443. Support frame, 45. Air supply port, 46. Cleaning nozzle of the reflux chamber, 47. Cleaning valve of the reflux chamber, 48. Target gas input port, 49. Pressure gauge of the reflux chamber, 51. Slide valve, 52. Perforated plate, 521. Circulation hole of the perforated plate, 522. Output hole of the perforated plate in the open state, 523. Output hole of the perforated plate in the closed state, 53. Cleaning valve of the atomizing chamber, 54. Cleaning nozzle of the atomizing chamber, 55. Pressure gauge of the atomizing chamber.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] The present invention adopts a constant pressure difference and porous flow limiting method to balance the flow rates of each pore channel, selects a small amount of pore channel fluid as the output, and mixes it into the target gas, thereby realizing the micro and continuously adjustable preparation of the generated aerosol. The basic principle of stable flow distribution is that at a specific temperature and pressure, when the gas flow rate changes, the resistance in the pipeline rises to a high power. On the contrary, the flow rate change caused by the pressure difference change at both ends of the pipeline is a low-order change. The fine pores adopted make the flow rate change relatively insensitive to pressure changes, which improves the distribution stability of the flow rate in each fine pore. It is not necessary to require the fluid delivery fan to have high wind pressure stability, effectively reducing costs and improving the reliability and practicability of the system.

[0031] The system provided by the present invention has the advantages of small volume, easy to move, matching with application conditions, and can reduce costs.

[0032] The system and method provided by the present invention can meet the aerosol application scenarios with small demands. In this scenario, a large flow rate of fluid is first generated, and only a part of it is used to enter the target gas. Therefore, it can provide a shunt for the demand below the minimum generation amount of the aerosol, without waste and pollution caused by excessive fluid emissions. The method is simple, controllable, and easy to implement. Specific embodiments

[0033] The present invention will be described in detail below through specific embodiments, but the protection scope of the present invention is not limited. Unless otherwise specified, the experimental equipment, materials, reagents, etc. used in the present invention can be obtained from commercial channels. For the convenience of description, the pressure gauge represents a mechanical pressure gauge and a pressure sensor, and the valve represents a mechanical manual valve, an electric control valve or a pneumatic control valve. The temperature sensor can adopt a thermocouple.

[0034] Example 1

[0035] A system for generating a trace amount of solid or aerosol dispersed in a gas state, which is composed of an atomization chamber 10, a reflux chamber 36, a cleaning pump 22, an atomization pump 25, a mixing chamber 44 and connecting components therebetween; the upper part of the atomization chamber 10 is connected to the reflux chamber 36 through a porous plate 52, and the middle part is connected by a reflux channel 33; an atomization pump 25 is arranged below the atomization chamber 10, a washing liquid pipe 21 is arranged between the atomization chamber 10 and the reflux chamber 36, and a cleaning pump 22 is arranged on the washing liquid pipe 21.

[0036] Among them, the atomization chamber 10 is composed of an atomization chamber housing and its components. The demister 12 divides the interior of the atomization chamber 10 into an upper atomization chamber 11 and a lower atomization chamber 14. A liquid level gauge 16 is arranged between the upper atomization chamber 11 and the lower atomization chamber 14.

[0037] The upper chamber 11 of the atomization chamber is connected to the reflux chamber 36 by a perforated plate 52, and then connected to the lower chamber 14 of the atomization chamber through a reflux channel 33; an atomization chamber cleaning spray head 54 and an atomization chamber pressure gauge 55 are provided inside the upper chamber 11 of the atomization chamber.

[0038] The lower chamber 14 of the atomization chamber stores the atomization stock solution 15, so that the temperature sensor 17, the heater 18, and the stirrer 27 provided below the lower chamber 14 of the atomization chamber are all immersed in the atomization stock solution 15, and the atomization spray head 28 and the liquid replenishing port 13 are located above the liquid level.

[0039] At the bottom of the atomization chamber 10, there is a liquid connection pipe, which is provided with three branches, namely an atomization pipe 26, a drain pipe, and a cleaning liquid pipe 21.

[0040] The cleaning liquid pipe 21 is respectively connected to the atomization chamber cleaning spray head 54 and the reflux chamber cleaning spray head 46. The atomization chamber cleaning valve 53 is connected to the atomization chamber cleaning spray head 54, and the reflux chamber cleaning valve 47 is connected to the reflux chamber cleaning spray head 46. The atomization pipe 26 is connected to the atomization spray head 28, and an atomization pump 25 is provided on the atomization pipe 26. The atomization pump 25 transports the atomization liquid to generate a spray through the atomization spray head 28. A drain valve 24 is provided on the drain pipe, and the outlet is a drain port 23.

[0041] The reflux chamber 36 is composed of a reflux chamber housing 35 and its components. The mixing chamber 44 is located above the interior of the reflux chamber 36. There is a reflux chamber cleaning spray head 46 above the mixing chamber 44. A reflux chamber pressure gauge 49 is provided on the reflux chamber housing 35, and there is also an air supplement port 45 on the reflux chamber 36. The reflux air duct 33 is located at the bottom of the reflux chamber 36, and a flow meter 32 and a reflux fan 34 are provided inside the reflux air duct 33.

[0042] The mixing chamber housing 43 is connected to the perforated plate 52, so that the mixing chamber 44 is crimped on the perforated plate; a slide valve 51 is provided between the mixing chamber housing 43 and the perforated plate 52. The mixing chamber 44 also has a balance membrane. Among them, the slide valve 51 blocks a part of the perforated plate circulation holes 521 to serve as the perforated plate input / output holes 522, and the opening and closing states of the perforated plate circulation holes 521 are controlled by the sliding of the slide valve 51. The diameter of the perforated plate circulation holes 521 is set between 0.5 and 2.0 mm.

[0043] A target gas input port 48 and a mixed gas output port 41 are provided on the mixing chamber housing 43, and the mixing chamber housing 43 is connected to a mixing chamber pressure gauge 42. A mixing chamber reflux pipe 37 is provided at the bottom of the mixing chamber 44 to communicate the mixing chamber 44 with the reflux chamber 36, and a mixing chamber reflux valve 38 is provided on the mixing chamber reflux pipe 37.

[0044] Embodiment 2

[0045] A generation system for dispersing trace amounts of solids or aerosols in a gas state, which consists of an atomization chamber 10, a reflux chamber 36, a cleaning pump 22, an atomization pump 25, a mixing chamber 44 and connecting components therebetween; the upper part of the atomization chamber 10 is connected to the reflux chamber 36 through a porous plate 52, and the middle part is connected by a reflux channel 33; an atomization pump 25 is provided below the atomization chamber 10, a washing liquid pipe 21 is provided between the atomization chamber 10 and the reflux chamber 36, and a cleaning pump 22 is provided on the washing liquid pipe 21.

[0046] Among them, the atomization chamber 10 is composed of an atomization chamber outer shell and its components. A demister 12 divides the interior of the atomization chamber 10 into an upper atomization chamber 11 and a lower atomization chamber 14. A liquid level gauge 16 is provided between the upper atomization chamber 11 and the lower atomization chamber 14.

[0047] The upper atomization chamber 11 is connected to the reflux chamber 36 through a porous plate 52, and then connected to the lower atomization chamber 14 through a reflux channel 33; an atomization chamber cleaning spray head 54 and an atomization chamber pressure gauge 55 are provided inside the upper atomization chamber 11.

[0048] The lower atomization chamber 14 stores atomization stock solution 15 inside. A temperature sensor 17, a heater 18, and a stirrer 27 provided below the lower atomization chamber 14 are all immersed in the atomization stock solution 15. An atomization nozzle 28 and a liquid replenishment port 13 are located above the liquid level.

[0049] At the bottom of the atomization chamber 10, there is a liquid connection pipe, which is provided with three branches, namely an atomization pipe 26, a drain pipe, and a washing liquid pipe 21.

[0050] The washing liquid pipe 21 is respectively connected to the atomization chamber cleaning spray head 54 and the reflux chamber cleaning spray head 46. An atomization chamber cleaning valve 53 is connected to the atomization chamber cleaning spray head 54, and a reflux chamber cleaning valve 47 is connected to the reflux chamber cleaning spray head 46. The atomization pipe 26 is connected to the atomization nozzle 28, and an atomization pump 25 is provided on the atomization pipe 26. The atomization pump 25 transports the atomization liquid and generates a spray through the atomization nozzle 28. A drain valve 24 is provided on the drain pipe, and the outlet is a drain port 23.

[0051] The reflux chamber 36 is composed of a reflux chamber outer shell 35 and its components. The mixing chamber 44 is located above the interior of the reflux chamber 36. A reflux chamber cleaning spray head 46 is provided above the mixing chamber 44. A reflux chamber pressure gauge 49 is provided on the reflux chamber outer shell 35. There is also an air supply port 45 on the reflux chamber 36. The reflux air duct 33 is located at the bottom of the reflux chamber 36, and a flow meter 32 and a reflux fan 34 are provided inside the reflux air duct 33.

[0052] The mixing chamber outer shell 43 is connected to the porous plate 52, so that the mixing chamber 44 is press-fitted on the porous plate; a slide valve 51 is provided between the mixing chamber outer shell 43 and the porous plate 52. The mixing chamber 44 also has a balance membrane.

[0053] The porous plate 52 is arranged in multiple rows, and several porous plate circulation holes 521 are evenly distributed on the porous plate 52, with the diameter set between 0.5 and 2.0 mm. The mixing chamber housing 43 is connected to one row of the porous plate circulation holes 521 of the porous plate, serving as the outlet for the target gas. The slide valve 51 is pressed against this row of porous plate circulation holes 521, and the opening and closing states of the porous plate circulation holes 521 are controlled by sliding. That is, the side not blocked by the slide valve 51 is the open-state porous plate outlet hole 522, and the side blocked by the slide valve 51 is the closed-state porous plate outlet hole 523.

[0054] The balance membrane includes an outer balance membrane 442 and an inner balance membrane 441. The edge of the outer balance membrane 442 is sealed with the outer surface of the mixing chamber housing 43, and the inner balance membrane 441 is sealed with the inner surface of the mixing chamber housing 43. The inner balance membrane 441 is arranged opposite to the outer balance membrane 442. There are openings in the mixing chamber housing 43 between the inner balance membrane 441 and the outer balance membrane 442 for connection. The inside of the outer balance membrane 442 has a support frame 443 to support and keep the surface convex without liquid accumulation.

[0055] The mixing chamber housing 43 is provided with a target gas inlet 48 and a mixed gas outlet 41, and the mixing chamber housing 43 is connected to a mixing chamber pressure gauge 42. At the bottom of the mixing chamber 44, there is a mixing chamber return pipe 37 to communicate the mixing chamber 44 with the return chamber 36, and a mixing chamber return valve 38 is provided on the mixing chamber return pipe 37.

[0056] Embodiment 3

[0057] As another preferred technical solution of the present invention, the porous plate 52 can be assembled with slender tubes, and the inner diameter of the slender tubes forms the plate holes.

[0058] As shown in the figure, in this embodiment, multiple slender tubes with the same specifications are used to replace the pores of the porous plate to form a fluid channel, which can also achieve the balanced distribution of gas flow.

[0059] Embodiment 4

[0060] As another preferred technical solution of the present invention, the mixing chamber 44 can be arranged in the return chamber 36 in a horizontal or vertical manner. Compared with Embodiment 1 or 2, in this embodiment, the porous plate is changed from a horizontal manner to a vertical manner. Among them, both the inner balance membrane 441 and the outer balance membrane 442 are in the side direction.

[0061] Embodiment 5

[0062] The return air blower 34 pressurizes the gas in the return chamber 36 through the return air duct 33 and sends it into the lower chamber 14 of the atomization chamber, mixes the droplets generated by the atomizing nozzle 28 with the gas, removes the foam through the demister 12, stabilizes in the upper chamber 11 of the atomization chamber, is distributed by the perforated plate 52 and circulates to the return chamber 36, and part of the atomized gas is output to the target gas through the output hole 523 of the perforated plate in the open state as an addition to the target gas, completing the overall cycle.

[0063] During the operation of the system, the pressure difference between the mixing chamber 44 and the return chamber 36 is detected by the mixing chamber pressure gauge 42 and the return chamber pressure gauge 49, and the conveying gas is supplemented through the air supplement port 45 to maintain pressure balance. The inner balance membrane 441 and the outer balance membrane 442 deform under the action of a small pressure difference to directly balance the minute pressure difference and keep the inside and outside isolated.

[0064] After the system is operated, aerosol-like substances may adhere to and deposit on the inner wall of the device. The cleaning pump 22 is used to convey the atomization stock solution 15, and the atomization chamber 10 and the perforated plate 52 are cleaned through the atomization chamber cleaning valve 53 and the atomization chamber cleaning nozzle 54.

[0065] The sliding valve 51 slides to control the relationship between the number of open and closed holes of the perforated plate circulation holes 521 on the perforated plate 52 to form a stepwise flow regulation, thereby achieving the cleaning purpose; among them, the opening part of the perforated plate of the mixing chamber of the perforated plate 52 is fully open, that is, the sliding valve is fully open, and the mixing chamber 44 is cleaned; it is adjusted according to the total number of the perforated plate circulation holes 521, and the flow rate of the return air blower 34 is measured by the flow meter 32; the sliding valve 51 and the return air blower 34 together form a continuous regulation of the output flow rate of the atomized gas to the mixing chamber 44 by 1 to 20 times.

[0066] In this embodiment, the perforated plate 52 has a total of 5 rows of plate holes as an example for detailed description. Each row of the perforated plate 52 has 5 holes, for a total of 25 holes. The sliding valve 51 forms a stepwise flow regulation of 0 to 5, 0 means no output, and the flow rate during output is 1 / 25 to 5 / 25 of the total flow rate; the rotation speed of the return air blower 34 is continuously adjusted and at least reaches 25 to 100% of the maximum flow rate in the total flow rate range; the flow rate of the return air blower 34 is measured by the flow meter 33, and the flow rate is 1 to 4 L / min; the sliding valve 51 and the return air blower 34 together form a continuous supply of atomized gas of 0.04 to 0.80 L / min, that is, 1 to 20 times the output flow rate to the mixing chamber 44.

[0067] The inner wall of the reflux chamber 36 is cleaned by spraying a solution through the cleaning nozzle 46 of the reflux chamber. Among them, the aerosol mixing chamber 44 has a mixing chamber reflux pipe 37. Then, the mixing chamber reflux valve 38 is opened, and the liquid entering the mixing chamber 44 flows back to the reflux chamber 36 to complete the cleaning of the mixing chamber 44. The cleaning liquid in the reflux chamber 36 flows to the lower part of the reflux chamber 36 and returns to the atomization chamber 10 through the reflux fan 34, the reflux air duct 33, the flow meter 32, and the reflux port 31. Among them, the reflux fan 34 supplies fluid at a low speed to clean the reflux fan 34, the reflux air duct 33, the flow meter 32, and the reflux port 31.

[0068] The gas entering from the air supply port 45 enters the reflux chamber 36 after being bubbled and humidified at the same temperature and concentration, avoiding the influence of water evaporation after atomized liquid spraying caused by the entry of dry gas.

[0069] During the operation of the system, the system temperature is set (such as 45 °C). During the operation, the liquid level of the atomization stock solution 15 decreases and the temperature decreases. Liquid replenishment and heating are used to maintain a stable liquid level and temperature. Among them, the liquid level gauge 16 detects the liquid level of the atomization stock solution 15, and the atomization stock solution 15 is replenished through the liquid replenishment port 13. The thermocouple detects the temperature of the atomization stock solution 15, and the atomization stock solution 15 is heated through the heater 18.

[0070] As mentioned above, it is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A system for generating a trace amount of solid or aerosol dispersed in a gas phase, characterized in that, It is composed of an atomization chamber (10), a reflux chamber (36), a cleaning pump (22), an atomization pump (25), a mixing chamber (44) and connecting components therebetween; the upper part of the atomization chamber (10) is connected to the reflux chamber (36) through a perforated plate (52), and the middle part is connected by a reflux air duct (33); an atomization pump (25) is provided below the atomization chamber (10), a washing liquid pipe (21) is provided between the atomization chamber (10) and the reflux chamber (36), and a cleaning pump (22) is provided on the washing liquid pipe (21); the atomization chamber (10) is composed of an atomization chamber outer shell and its components; a demister (12) divides the interior of the atomization chamber (10) into an upper atomization chamber (11) and a lower atomization chamber (14); the lower atomization chamber (14) stores atomization stock solution (15), and a temperature sensor (17), a heater (18), a stirrer (27) are also provided below the lower atomization chamber (14), and an atomization nozzle (28) and a liquid replenishing port (13) are located above the liquid level; the reflux chamber (36) is composed of a reflux chamber outer shell (35) and its components; the mixing chamber (44) is located above the interior of the reflux chamber (36); the perforated plate (52) is arranged in multiple rows, and several perforated plate circulation holes (521) are evenly distributed on the perforated plate (52), and the mixing chamber outer shell (43) is connected to one row of the perforated plate circulation holes (521) of the perforated plate for the outlet of the target gas, so that the mixing chamber (44) is pressed against the perforated plate; a slide valve (51) is provided between the mixing chamber outer shell (43) and the perforated plate (52); the mixing chamber (44) also has a balance membrane.

2. A system for generating a dispersion of trace solids or aerosols in a gas according to claim 1, characterized in that, A liquid level gauge (16) is provided between the upper atomization chamber (11) and the lower atomization chamber (14); an atomization chamber cleaning nozzle (54) and an atomization chamber pressure gauge (55) are provided inside the upper atomization chamber (11).

3. A system for generating a dispersion of trace solids or aerosols in a gas according to claim 1, characterized in that, At the bottom of the atomization chamber (10), there is a liquid connection pipe, and the liquid connection pipe is provided with three branches, namely an atomization pipe (26), a drain pipe and a washing liquid pipe (21); The washing liquid pipe (21) is respectively connected to an atomization chamber cleaning nozzle (54) and a reflux chamber cleaning nozzle (46); an atomization chamber cleaning valve (53) is connected to the atomization chamber cleaning nozzle (54), and a reflux chamber cleaning valve (47) is connected to the reflux chamber cleaning nozzle (46); the atomization pipe (26) is connected to the atomization nozzle (28), and an atomization pump (25) is provided on the atomization pipe (26).

4. A system for generating a dispersion of trace amounts of solids or aerosols in a gas, according to claim 1, wherein Above the mixing chamber (44), there is a reflux chamber cleaning nozzle (46), a reflux chamber pressure gauge (49) is provided on the reflux chamber outer shell (35), and there is also an air supplement port (45) on the reflux chamber (36); the reflux air duct (33) is located at the bottom of the reflux chamber (36), and a flowmeter (32) and a reflux fan (34) are provided inside the reflux air duct (33).

5. A generation system for dispersing trace solids or aerosols in a gas state according to claim 1, characterized in that, The slide valve (51) blocks a part of the perforated plate circulation holes (521) to make them into perforated plate output / input holes (522), and the opening and closing states of the perforated plate output / input holes (522) are controlled by the slide valve (51).

6. A system for generating a dispersion of trace solids or aerosols in a gas according to claim 1, characterized in that, The perforated plate (52) is assembled by slender tubes, and the inner diameter of the slender tubes forms plate holes.

7. A generation system for dispersing trace amounts of solids or aerosols in a gas according to claim 1, characterized in that, The mixing chamber (44) is arranged in the reflux chamber (36) in a horizontal or vertical manner.

8. A system for generating a dispersion of trace solids or aerosols in a gas, according to claim 1, characterized in that The mixing outdoor shell (43) is provided with a target gas input port (48) and a mixed gas output port (41), and the mixing outdoor shell (43) is connected to a mixing chamber pressure gauge (42); At the bottom of the mixing chamber (44), a mixing chamber return pipe (37) is provided to communicate the mixing chamber (44) with the return chamber (36), and a mixing chamber return valve (38) is provided on the mixing chamber return pipe (37).

9. A method for generating a trace amount of solid or aerosol dispersed in a gas by the system according to any one of claims 1 to 8, characterized in that The return air fan (34) pressurizes and sends the gas in the return chamber (36) into the lower chamber (14) of the atomizing chamber through the return air duct (33), mixes the droplets generated by the atomizing nozzle (28) with the gas, removes the foam through the foam remover (12), enters the upper chamber (11) of the atomizing chamber to be stabilized, is distributed by the porous plate (52) and circulated to the return chamber (36), and part of the atomized gas is output through the open state porous plate output hole (523) into the target gas as an addition to the target gas, completing the overall circulation; After the system runs, aerosol-like substances are wall-hung and deposited on the inner wall of the device. The cleaning pump (22) is used to transport the atomizing stock solution (15), and through the atomizing chamber cleaning valve (53) and the atomizing chamber cleaning nozzle (54), the atomizing chamber (10) and the porous plate (52) are cleaned.

10. Application of the system according to claim 1 in the field of fuel cells.

Images