Atomization spraying acid gas absorption device

Abstract

The utility model discloses a device for atomizing, spraying and absorbing acid gas. The device comprises a dosing tank, a fuming cupboard, a waste liquid barrel, an atomizing nozzle and a tail gas absorbing pipe, a waste liquid barrel is placed in the fuming cupboard; a waste liquid inlet pipe is fixedly arranged on the fuming cupboard; the waste liquid inlet pipe is positioned above the waste liquid barrel; conveying pipes are fixedly arranged on the two sides of the fuming cupboard correspondingly. An atomizing nozzle is rotationally arranged at one end, extending into the fuming cupboard, of the conveying pipe; the other end, extending out of the fuming cupboard, of the conveying pipe is communicated with the dosing tank; the top of the fuming cupboard is communicated and connected with the tail gas absorption pipe; the dosing tank is arranged on one side of the exterior of the fuming cupboard; a sodium hypochlorite inlet pipe is fixedly arranged on the dosing tank; and the sodium hypochlorite inlet pipe extends into the dosing tank. According to the device for absorbing the acidic gas by atomizing and spraying, the atomizing nozzle can rotate, so that the best effect of quickly absorbing the acidic poisonous and harmful gas in a fuming cupboard can be achieved.

Description

Technical Field

[0001] This utility model relates to a device for absorbing acidic gases, and more particularly to a device for absorbing acidic gases by atomizing spraying. Background Technology

[0002] Laboratory waste liquids are typically stored in small containers, which need to be collected back into bulk containers by the manufacturer during recycling. Currently, manufacturers use pumps to transfer the laboratory waste liquids from the small containers into bulk containers housed in fume hoods. The main solution is as follows:

[0003] (1) Design of laboratory waste liquid inversion process system: The design includes inversion fume hood, spray tower, fan, automatic dosing system, static electricity discharge device, suspended dry powder fire extinguisher, positive pressure breathing apparatus, and online monitoring device for toxic and harmful gases;

[0004] (2) Design of the new explosion-proof and early warning isolation cabinet: By opening through holes on the isolation cabinet, pipes are inserted to inject waste liquid into the ton container; the isolation cabinet is equipped with a temperature alarm, which can detect the temperature inside the isolation cabinet in real time and alarm at a predetermined temperature; the air suction device installed in the isolation cabinet can absorb the waste gas released by the reaction of the waste liquid in the ton container, so as to avoid the waste gas from polluting the air.

[0005] (3) Setup of the online monitoring system: It consists of four parts: data acquisition module, data reporting module, alarm module, and back-end management system; it monitors toxic and harmful gases online to determine the content and concentration of toxic and harmful gases in the work area. The monitoring data is automatically transmitted to the back-end system, where the gas monitoring service of the back-end management system summarizes, organizes, and comprehensively analyzes the data.

[0006] However, since the fume hood is not completely sealed, there is a possibility that the gas generated by the waste liquid may leak out. Most of the generated gas is acidic, especially highly toxic gases such as hydrogen cyanide and chlorine. If there is a leak, it will seriously threaten the life safety of the operators. Utility Model Content

[0007] In view of this, the present invention proposes a device for atomizing spray to absorb acidic gases.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A device for absorbing acidic gases by atomizing spray includes a dosing tank, a fume hood, a waste liquid tank, an atomizing nozzle, and a tail gas absorption pipe.

[0010] The fume hood contains a waste liquid tank; a waste liquid inlet pipe is fixedly installed on the fume hood; the waste liquid inlet pipe is located above the waste liquid tank;

[0011] The fume hood is fixedly provided with delivery pipes on both sides; one end of the delivery pipe extending into the fume hood is rotatably provided with an atomizing nozzle; the other end of the delivery pipe extending out of the fume hood is connected to the dosing tank.

[0012] The top of the fume hood is connected to the exhaust gas absorption pipe;

[0013] The dosing tank is located on the outer side of the fume hood;

[0014] A sodium hypochlorite inlet pipe is fixedly installed on the dosing tank; the sodium hypochlorite inlet pipe extends into the interior of the dosing tank.

[0015] Furthermore, the fume hood has two units.

[0016] Furthermore, a diaphragm pump is installed on the waste liquid inlet pipe.

[0017] Furthermore, a rotating assembly is fixedly provided at one end of each of the conveying pipes that extends into the rear side of the fume hood;

[0018] The rotating assembly is connected to an atomizing nozzle in the direction of the inside of the fume hood.

[0019] Furthermore, the rotating assembly includes a delivery pipe and a fastening elastic ring;

[0020] The delivery branch pipe is a T-shaped pipe; the transverse section of the delivery branch pipe is threaded to the delivery pipe; the longitudinal section of the delivery branch pipe is fixedly connected to the atomizing nozzle.

[0021] The fastening elastic ring is elastically pressed onto the longitudinal pipe sections of the conveying pipe and the conveying branch pipe.

[0022] Furthermore, a filter is provided at the top of the dosing tank;

[0023] The filter is divided into two filter chambers by a partition; each filter chamber is equipped with a filter screen.

[0024] The upper inlet of one side of the filter chamber is connected to the water inlet pipe; the lower outlet of the other side of the filter chamber is connected to the interior of the dosing tank.

[0025] The lower inlet of the other filter chamber is connected to the interior of the dosing tank; the side outlet of the other filter chamber is connected to the delivery pipe; the side outlet of the other filter chamber is located above the filter screen.

[0026] Furthermore, a first delivery pump is provided on the delivery pipe.

[0027] Furthermore, a second delivery pump is provided inside the dosing tank;

[0028] The inlet end of the second delivery pump is connected to the sodium hypochlorite inlet pipe; the sodium hypochlorite inlet pipe extends through the dosing tank; the outlet end of the second delivery pump is connected to the sodium hypochlorite outlet pipe; the sodium hypochlorite outlet pipe is located inside the dosing tank.

[0029] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model provides an atomizing spray absorption device for acidic gases, in which the atomizing nozzle can rotate to achieve the best and fastest absorption effect of acidic toxic and harmful gases in the fume hood until the online gas monitoring device alarm is cleared, preventing acidic toxic and harmful gases from overflowing outside the fume hood and causing poisoning of on-site operators. Attached Figure Description

[0030] Figure 1 A schematic diagram of the structure of the atomizing spray absorption acid gas device provided in this embodiment of the utility model;

[0031] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0032] Figure 3 for Figure 1 Enlarged view of part B in the image;

[0033] Figure 4 A perspective view of the rotating assembly provided in an embodiment of this utility model.

[0034] In the diagram: 1. Dosing tank; 2. Fume hood; 3. Waste liquid tank; 4. Atomizing nozzle; 5. Exhaust gas absorption pipe; 6. Waste liquid inlet pipe; 7. Diaphragm pump; 8. Delivery pipe; 9. First delivery pump; 10. Filter; 11. Filter screen; 12. Water inlet pipe; 13. Second delivery pump; 14. Sodium hypochlorite inlet pipe; 15. Sodium hypochlorite outlet pipe; 16. Delivery branch pipe; 17. Fastening elastic ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Example:

[0039] like Figure 1-4 As shown, an atomizing spray absorption device for acidic gases includes a dosing tank 1, two fume hoods 2, a waste liquid tank 3, an atomizing nozzle 4, and an exhaust gas absorption pipe 5.

[0040] Each fume hood 2 contains a waste liquid tank 3; each fume hood 2 is fixedly equipped with a waste liquid inlet pipe 6; the waste liquid inlet pipe 6 is located above the waste liquid tank 3. A diaphragm pump 7 is installed on the waste liquid inlet pipe 6.

[0041] Each fume hood 2 has a delivery pipe 8 fixedly installed on both sides; one end of the delivery pipe 8 extending into the fume hood 2 is equipped with a rotating atomizing nozzle 4; the other end of the delivery pipe 8 extending out of the fume hood 2 is connected to the dosing tank 1. A first delivery pump 9 is installed on the delivery pipe 8.

[0042] The top of fume hood 2 is connected to the exhaust gas absorption pipe 5.

[0043] The dosing tank 1 is located on the outside side of the fume hood 2.

[0044] A filter 10 is installed at the top of the dosing tank 1. The interior of the filter 10 is divided into two filter chambers by a partition; each filter chamber is equipped with a filter screen 11.

[0045] The upper inlet of one filter chamber is connected to the water inlet pipe 12; the lower outlet of one filter chamber is connected to the interior of the dosing tank 1. The lower inlet of the other filter chamber is connected to the interior of the dosing tank 1; the side outlet of the other filter chamber is connected to the delivery pipe 8; the side outlet of the other filter chamber is located above the filter screen 11.

[0046] The dosing tank 1 is equipped with a second delivery pump 13. The inlet end of the second delivery pump 13 is connected to the sodium hypochlorite inlet pipe 14; the sodium hypochlorite inlet pipe 14 extends through the dosing tank 1; the outlet end of the second delivery pump 13 is connected to the sodium hypochlorite outlet pipe 15; the sodium hypochlorite outlet pipe 15 is located inside the dosing tank 1.

[0047] Each delivery pipe 8 has a rotating assembly fixedly installed at one end of its extension into the rear side of the fume hood 2. The rotating assembly includes a delivery branch pipe 16 and a fastening elastic ring 17.

[0048] The delivery pipe 16 is a T-shaped pipe; the transverse pipe section of the delivery pipe 16 is threadedly connected to the delivery pipe 8; the longitudinal pipe section of the delivery pipe 16 is fixedly connected to the atomizing nozzle 4.

[0049] The elastic ring 17 is elastically pressed onto the longitudinal pipe sections of the conveying pipe 8 and the conveying branch pipe 16.

[0050] Each fume hood 2 is equipped with sensors, controllers, and alarms to detect the concentration of overflow gas, forming an inverted waste liquid compatible online gas detection device. The sensors and controllers are electrically connected, and the controllers and alarms are also electrically connected. When a sensor detects that the overflow gas in the fume hood exceeds a set threshold, the sensor transmits a signal to the controller, which in turn transmits the signal to the alarm, triggering an alarm.

[0051] Working principle: A certain amount of sodium hypochlorite is poured into the dosing tank 1, and water is added by turning on the tap water supply switch to prepare a 5% sodium hypochlorite solution. The laboratory waste liquid is transported to the waste liquid tank 3 through the diaphragm pump 7. Gas overflows from the waste liquid tank 3 in the fume hood 2. The gas is mostly acidic and may also contain highly toxic gases such as hydrogen cyanide and chlorine. This solution adds a sodium hypochlorite spray device to the existing waste liquid inversion facility. The atomizing nozzle 4 is in the normally open state. When the online gas detection device for inverted waste liquid alarms, the first delivery pump 9 is turned on, and the 5% sodium hypochlorite solution is transported through the delivery pipe 8 to the atomizing nozzles 4 on both sides of the upper end of the fume hood 2. The solution is sprayed in an atomized form from both sides of the top to the middle, quickly absorbing the acidic toxic and harmful gases in the fume hood 2 until the online gas monitoring device alarm is cleared. The purpose is to prevent the acidic toxic and harmful gases from overflowing out of the fume hood 2 and causing poisoning to the on-site operators.

[0052] The inner part of the fastening elastic ring 17 is first fastened and elastically pressed against the longitudinal section of the delivery pipe 16. The delivery pipe 16 is rotated to a suitable angle (the delivery pipe 16 and the delivery pipe 8 are connected by threads for easy rotation). Then, the outer part of the fastening elastic ring 17 is folded over so that the outer part of the elastic ring 17 is fastened and elastically pressed against the delivery pipe 8. This achieves the fastening elastic ring 17 fixing the positions of the delivery pipe 8 and the delivery pipe 16 together, that is, fixing the position of the atomizing nozzle 4. This achieves an adjustable liquid discharge angle so as to obtain the best effect of rapid absorption of acidic toxic and harmful gases in the fume hood 2.

[0053] The atomizing nozzle sprays a 5% sodium hypochlorite solution from back to front into the interior of fume hood 2.

[0054] Note: Sodium hypochlorite decomposes into HCl and O2 under light. Although this device is placed in a cool place, it will deteriorate if left for a long time. Therefore, regardless of whether it is used or not, the sodium hypochlorite solution must be prepared again every month.

[0055] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An apparatus for absorbing acid gases by atomized spraying, characterized by, Including dosing tank (1), fume hood (2), waste liquid barrel (3), atomizing nozzle (4) and tail gas absorption pipe (5); The inside of the fume hood (2) is provided with a waste liquid barrel (3); The waste liquid inlet pipe (6) is fixedly arranged on the fume hood (2); The waste liquid inlet pipe (6) is located above the waste liquid barrel (3); Both sides of the fume hood (2) are respectively provided with a conveying pipe (8); One end of the conveying pipe (8) extending into the fume hood (2) is rotatably provided with an atomizing nozzle (4); The other end of the conveying pipe (8) extending out of the fume hood (2) is in communication with the dosing tank (1); The top of the fume hood (2) is in communication with the tail gas absorption pipe (5); The dosing tank (1) is arranged on one side outside the fume hood (2); A sodium hypochlorite inlet pipe (14) is fixedly arranged on the dosing tank (1); The sodium hypochlorite inlet pipe (14) extends into the inside of the dosing tank (1).

2. The atomized spray absorption acid gas device of claim 1, wherein, The fume hood (2) has 2.

3. The atomized spray absorption acid gas unit of claim 1, wherein, A diaphragm pump (7) is arranged on the waste liquid inlet pipe (6).

4. The atomized spray absorption acid gas unit of claim 1, wherein, Each conveying pipe (8) is fixedly provided with a rotating assembly at one end extending into the back side of the fume hood (2); The rotating assembly is in communication with the atomizing nozzle (4) in the direction towards the inside of the fume hood (2).

5. The apparatus according to claim 4, wherein The rotating assembly comprises a conveying branch pipe (16) and a fastening elastic ring (17); The conveying branch pipe (16) is a T-shaped pipe; The horizontal pipe part of the conveying branch pipe (16) is threadedly connected with the conveying pipe (8); The vertical pipe part of the conveying branch pipe (16) is fixedly connected with the atomizing nozzle (4); The fastening elastic ring (17) is elastically pressed on the vertical pipe part of the conveying branch pipe (16) and the conveying pipe (8).

6. The atomized spray absorption acid gas unit of claim 1, wherein, The top end of the dosing tank (1) is provided with a filter (10); The inside of the filter (10) is divided into two filter chambers by a partition plate; Each filter chamber is provided with a filter screen (11); The upper end inlet of one side filter chamber is in communication with a water inlet pipe (12); The lower end outlet of one side filter chamber is in communication with the inside of the dosing tank (1); The lower end inlet of the other side filter chamber is in communication with the inside of the dosing tank (1); The side end outlet of the other side filter chamber is in communication with the conveying pipe (8); The side end outlet of the other side filter chamber is located above the filter screen (11).

7. The apparatus according to claim 6, wherein the atomizing spray is arranged to spray the acid gas into the water in the form of droplets having a diameter of 10 to 1000 μm. A first conveying pump (9) is arranged on the conveying pipe (8).

8. The atomized spray absorption acid gas unit of claim 6, wherein, A second conveying pump (13) is arranged in the dosing tank (1); The inlet end of the second conveying pump (13) is connected with the sodium hypochlorite inlet pipe (14); The sodium hypochlorite inlet pipe (14) extends out of the dosing tank (1); The outlet end of the second conveying pump (13) is connected with a sodium hypochlorite outlet pipe (15); The sodium hypochlorite outlet pipe (15) is located in the inside of the dosing tank (1).

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