Atomization spraying acid gas absorption device

Abstract

The invention discloses a device for absorbing acid gas by atomizing and spraying. The device comprises a dosing tank, a fuming cupboard, a waste liquid barrel, an atomizing nozzle and a tail gas absorption 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 toxic and harmful gas in the fuming cupboard can be achieved.

Description

Technical Field

[0001] The invention relates to an acid gas absorption device, in particular to an atomization spraying acid gas absorption device. Background Art

[0002] The waste liquid generated in the laboratory is generally loaded in small barrels, and the manufacturer needs to collect the waste liquid in small barrels into ton barrels when recycling. At present, the manufacturer uses pumps to pump the laboratory waste liquid in small barrels into ton barrels in the fume hood. The main solutions are:

[0003] (1) Design of laboratory waste liquid inversion process system: The design includes inversion fume hood, spray tower, fan, automatic dosing system, electrostatic derivation device, hanging dry powder fire extinguisher, positive pressure respirator, and toxic and harmful gas online monitoring device;

[0004] (2) Design of a new explosion-proof and early warning isolation cabinet: a through hole is opened on the isolation cabinet to insert a pipe to inject waste liquid into the barrel; 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 preset temperature; the suction device installed in the isolation cabinet can absorb the waste gas released by the reaction of the waste liquid in the barrel to prevent the waste gas from polluting the air;

[0005] (3) Setting up the online monitoring system: It consists of four parts: data acquisition module, data reporting module, alarm module, and background management system. It monitors toxic and harmful gases online to understand the content and concentration of toxic and harmful gases in the working area. The monitoring data is automatically transmitted to the background system, and the gas monitoring service of the background management system summarizes, organizes and comprehensively analyzes the data.

[0006] However, since the fume hood is not completely airtight, the gases generated by the waste liquid may overflow. Most of the gases generated are acidic gases, especially highly toxic gases such as hydrogen cyanide and chlorine. If they overflow, they will seriously threaten the life safety of the operators. Summary of the invention

[0007] In view of this, the present invention proposes an atomization spraying device for absorbing acidic gases.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An atomizing spraying and absorbing acidic gas device comprises a dosing tank, a fume hood, a waste liquid barrel, an atomizing nozzle and a tail gas absorption pipe;

[0010] A waste liquid barrel is placed inside the fume hood; a waste liquid inlet pipe is fixedly provided on the fume hood; the waste liquid inlet pipe is located above the waste liquid barrel;

[0011] Delivery pipes are fixedly arranged on both sides of the fume hood; one end of the delivery pipe extending into the interior of the fume hood is rotatably provided with an atomizing nozzle; the other end of the delivery pipe extending outside the fume hood is connected to the dosing tank;

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

[0013] The dosing tank is arranged on one side of the outside of the fume hood;

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

[0015] Furthermore, there are two fume hoods.

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

[0017] Furthermore, a rotating assembly is fixedly provided at one end of each of the delivery pipes extending into the interior of the fume hood;

[0018] The rotating assembly is connected to an atomizing nozzle in a direction toward the inner side of the fume hood.

[0019] Further, the rotating assembly includes a nozzle seat, a spherical rotating block and a nozzle connecting pipe;

[0020] The nozzle seat is composed of an upper nozzle seat and a lower nozzle seat spliced ​​together;

[0021] The upper nozzle seat is provided with an upper rotating groove in the direction toward the inside of the fume hood; the upper nozzle seat is provided with an upper liquid groove connected with the upper rotating groove and the conveying pipe in the direction toward the outside of the fume hood; the upper end of the upper nozzle seat is provided with an upper threaded hole connected with the upper rotating groove;

[0022] The lower nozzle seat is provided with a lower rotating groove in the direction of the inner side of the fume hood; the lower nozzle seat is provided with a lower liquid groove connected with the lower rotating groove and the conveying pipe in the direction of the outer side of the fume hood; the lower end of the lower nozzle seat is provided with a lower threaded hole connected with the lower rotating groove;

[0023] The upper nozzle seat and the lower nozzle seat are both fixedly connected to one end of the delivery pipe extending into the interior of the fume hood; the upper rotating groove and the lower rotating groove are spliced ​​together to form a rotating groove; the spherical rotating block is rotatably arranged inside the rotating groove;

[0024] The spherical rotating block is a hollow structure; a plurality of through holes are formed on the spherical outer shell of the spherical rotating block; the upper liquid tank and the lower liquid tank are connected to the inner hollow part of the spherical rotating block through the through holes respectively;

[0025] The spherical rotating block is fixedly provided with a nozzle connecting pipe in a direction toward the inner side of the fume hood; the nozzle connecting pipe and the inner hollow part of the spherical rotating block are connected through a through hole;

[0026] The upper threaded hole is internally threadedly connected with an upper screw rod; the lower end of the upper screw rod abuts against the spherical rotating block; the upper screw rod is fastened with a nut; the lower threaded hole is internally threadedly connected with a lower screw rod; the upper end of the lower screw rod abuts against the spherical rotating block; the lower screw rod is fastened with a nut;

[0027] The nozzle connecting pipe is connected to an atomizing nozzle in a direction close to the inner side of the fume hood.

[0028] Furthermore, a filter is provided at the top of the dosing tank;

[0029] The interior of the filter is divided into two filter chambers by a partition; filter screens are provided in both filter chambers;

[0030] The upper inlet of the filter chamber on one side is connected to the water inlet pipe; the lower outlet of the filter chamber on one side is connected to the interior of the dosing tank;

[0031] The lower end inlet of the filter chamber on the other side is connected to the interior of the dosing tank; the side end outlet of the filter chamber on the other side is connected to the delivery pipe; and the side end outlet of the filter chamber on the other side is located above the filter screen.

[0032] Furthermore, a first delivery pump is provided on the delivery pipe.

[0033] Furthermore, a second delivery pump is provided inside the dosing tank;

[0034] The inlet end of the second delivery pump is connected to the sodium hypochlorite inlet pipe; the sodium hypochlorite inlet pipe is passed through the dosing tank and extends out; 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.

[0035] Compared with the existing technology, the beneficial effects of the present invention are: the atomizing spraying acid gas absorption device provided by the present invention has a rotating atomizing nozzle so as to obtain the best effect of quickly absorbing the acidic toxic and harmful gases in the fume hood until the alarm of the online gas monitoring device is eliminated, thereby preventing the acidic toxic and harmful gases from overflowing outside the fume hood and causing poisoning of on-site operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of the atomizing spraying acid gas absorption device provided in Example 1 of the present invention;

[0037] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0038] Figure 3 for Figure 1 A magnified view of part B in FIG.

[0039] Figure 4 This is an exploded view of the rotating assembly provided in Example 1 of the present invention.

[0040] In the figure: 1, dosing tank; 2, fume hood; 3, waste liquid barrel; 4, atomizing nozzle; 5, tail 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, upper nozzle seat; 17, lower nozzle seat; 18, spherical rotating block; 19, nozzle connecting pipe; 21, upper rotating groove; 22, upper liquid trough; 23, upper threaded hole; 24, lower rotating groove; 25, lower liquid trough; 26, lower threaded hole; 27, through hole; 28, upper screw; 29, lower screw. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Embodiment 1:

[0045] like Figure 1-4As shown, an atomizing spraying device for absorbing acidic gases comprises a dosing tank 1, two fume hoods 2, a waste liquid barrel 3, an atomizing nozzle 4 and a tail gas absorption pipe 5.

[0046] A waste liquid barrel 3 is placed inside each fume hood 2; a waste liquid inlet pipe 6 is fixedly provided on each fume hood 2; the waste liquid inlet pipe 6 is located above the waste liquid barrel 3. A diaphragm pump 7 is provided on the waste liquid inlet pipe 6.

[0047] A delivery pipe 8 is fixedly provided on both sides of each fume hood 2; one end of the delivery pipe 8 extending into the fume hood 2 is rotatably provided with an atomizing nozzle 4; the other end of the delivery pipe 8 extending outside the fume hood 2 is connected to the dosing tank 1. A first delivery pump 9 is provided on the delivery pipe 8.

[0048] The top of the fume hood 2 is connected to the tail gas absorption pipe 5 .

[0049] The dosing tank 1 is arranged on the outer side of the fume hood 2 .

[0050] A filter 10 is provided at the top of the dosing tank 1. The interior of the filter 10 is divided into two filter chambers by a partition; filter screens 11 are provided in both filter chambers.

[0051] The upper inlet of the filter chamber on one side is connected to the water inlet pipe 12; the lower outlet of the filter chamber on one side is connected to the interior of the dosing tank 1. The lower inlet of the filter chamber on the other side is connected to the interior of the dosing tank 1; the side outlet of the filter chamber on the other side is connected to the delivery pipe 8; the side outlet of the filter chamber on the other side is located above the filter screen 11.

[0052] A second delivery pump 13 is provided inside the dosing tank 1. The inlet end of the second delivery pump 13 is connected to a sodium hypochlorite inlet pipe 14; the sodium hypochlorite inlet pipe 14 is passed through the dosing tank 1 and extends out; the outlet end of the second delivery pump 13 is connected to a sodium hypochlorite outlet pipe 15; the sodium hypochlorite outlet pipe 15 is located inside the dosing tank 1.

[0053] A rotating assembly is fixedly arranged at one end of each delivery pipe 8 extending into the interior of the fume hood 2. The rotating assembly comprises a nozzle seat, a spherical rotating block 18 and a nozzle connecting pipe 19.

[0054] The nozzle seat is composed of an upper nozzle seat 16 and a lower nozzle seat 17. A connecting plate is provided on the upper nozzle seat 16 and the lower nozzle seat 17, and the connecting plate is respectively connected to the upper nozzle seat 16 and the lower nozzle seat 17 by screw threads.

[0055] An upper rotating groove 21 is opened on the upper nozzle seat 16 toward the inner side of the fume hood 2; an upper liquid groove 22 connected to the upper rotating groove 21 and the conveying pipe 8 is opened on the upper nozzle seat 16 toward the outer side of the fume hood 2; an upper threaded hole 23 connected to the upper rotating groove 21 is opened on the upper end of the upper nozzle seat 16.

[0056] The lower nozzle seat 17 is provided with a lower rotating groove 24 toward the inner side of the fume hood 2; the lower nozzle seat 17 is provided with a lower liquid groove 25 connected with the lower rotating groove 24 and the conveying pipe 8 toward the outer side of the fume hood 2; the lower end of the lower nozzle seat 17 is provided with a lower threaded hole 26 connected with the lower rotating groove 24.

[0057] The upper nozzle seat 16 and the lower nozzle seat 17 are fixedly connected to one end of the conveying pipe 8 extending into the interior of the fume hood 2; the upper rotating groove 21 and the lower rotating groove 24 are spliced ​​together to form a rotating groove; the spherical rotating block 18 is rotatably arranged inside the rotating groove.

[0058] The spherical rotating block 18 is a hollow structure; a plurality of through holes 27 are formed through the spherical outer shell of the spherical rotating block 18; the upper liquid tank 22 and the lower liquid tank 25 are connected to the inner hollow part of the spherical rotating block 18 through the through holes 27, respectively.

[0059] A nozzle connecting pipe 19 is fixedly provided on the spherical rotating block 18 in a direction facing the inner side of the fume hood 2 ; the nozzle connecting pipe 19 and the inner hollow part of the spherical rotating block 18 are connected via a through hole 27 .

[0060] The upper threaded hole 23 is internally threaded with an upper screw rod 28, the lower end of which abuts against the spherical rotating block 18, and the upper screw rod 28 is fastened with a nut. The lower threaded hole 26 is internally threaded with a lower screw rod 29, the upper end of which abuts against the spherical rotating block 18, and the lower screw rod 29 is fastened with a nut.

[0061] The nozzle connecting pipe 19 is connected to the atomizing nozzle 4 near the inner side of the fume hood 2 .

[0062] Each fume hood 2 is provided with a sensor, a controller and an alarm for detecting the concentration of the overflowed gas, forming an inverted waste liquid compatible online gas detection device. Each sensor is electrically connected to the controller, and the controller is electrically connected to the alarm; when each sensor detects that the overflowed gas in the fume hood exceeds the set threshold, each sensor transmits a signal to the controller, and the controller transmits a signal to the alarm, and the alarm sounds an alarm.

[0063] Working principle: Pour a certain amount of sodium hypochlorite into the dosing tank 1, turn on the tap water adding switch to add water to prepare a sodium hypochlorite solution with a concentration of 5%; the laboratory waste liquid is transported to the waste liquid barrel 3 through the diaphragm pump 7, and the waste liquid barrel 3 overflows gas in the fume hood 2, most of the gas is acidic gas, and it may also contain highly toxic gases such as hydrogen cyanide and chlorine; this solution adds a sodium hypochlorite spray device to the original waste liquid inversion facility; the atomizing nozzle 4 is in a normally open state, when the inverted waste liquid is compatible with the online gas detection device alarm, the first delivery pump 9 is turned on, and the sodium hypochlorite solution with a concentration of 5% is transported to the atomizing nozzle 4 on both sides of the upper end of the fume hood 2 through the delivery pipe 8, and is sprayed from both sides of the top to the middle in an atomized state, and the acidic toxic and harmful gases in the fume hood 2 are quickly absorbed until the alarm of the online gas monitoring device is eliminated; the purpose is to prevent the acidic toxic and harmful gases from overflowing the fume hood 2 and causing poisoning of the on-site operators.

[0064] The spherical rotating block 18 is placed in the upper rotating groove 21 and the lower rotating groove 24, and then the upper nozzle seat 16 and the lower nozzle seat 17 are connected together through the connecting plate, and then the upper nozzle seat 16 and the lower nozzle seat 17 are fixedly connected to the delivery pipe 8; the spherical rotating block 18 is rotated, and the nozzle connecting pipe 19 and the atomizing nozzle are also rotated by a certain angle. When they are rotated to a suitable angle, the upper screw 28 and the lower screw 29 are respectively abutted against the upper end and the lower end of the spherical rotating block 18, and the upper screw 28 and the lower screw 29 are respectively fixed with nuts, that is, the position of the atomizing nozzle 4 is fixed, thereby realizing an adjustable liquid outlet angle, so as to obtain the best effect of quickly absorbing the acidic toxic and harmful gases in the fume hood 2.

[0065] The sodium hypochlorite solution with a concentration of 5% sprayed by the atomizing nozzle is sprayed to the inside of the fume hood 2 in a left-right convection manner.

[0066] Note: Sodium hypochlorite will decompose into HCl and O2 under light conditions. Although this device is placed in a cool condition, it will deteriorate if left for a long time. Therefore, the sodium hypochlorite solution must be re-prepared every few months regardless of whether it is used or not.

[0067] Embodiment 2:

[0068] The difference from Example 1 is that: one end of each delivery pipe 8 extending into the interior of the fume hood 2 is connected to a plurality of delivery branch pipes; a rotating component is fixedly provided at one end of each delivery air duct facing the inside of the fume hood 2; and a control valve is provided on each delivery air duct, and the control valve is electrically connected to the controller.

[0069] The remaining structures and the rotating assembly structure are the same as those in Example 1.

[0070] The connection method between the rotating assembly and the delivery branch pipe is the same as the connection method between the rotating assembly and the delivery pipe 8 in Example 1.

[0071] Therefore, in this embodiment, by controlling the opening and closing of several control valves, it is possible to control whether the rotating nozzles on several delivery branch pipes discharge water, and the rotating nozzles on each delivery branch pipe can adjust the water outlet angle to further obtain the best effect of quickly absorbing the acidic toxic and harmful gases in the fume hood 2.

[0072] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An atomizing spraying device for absorbing acidic gases, characterized in that: It comprises a dosing tank (1), a fume hood (2), a waste liquid bucket (3), an atomizing nozzle (4) and an exhaust gas absorption pipe (5); A waste liquid barrel (3) is placed inside the fume hood (2); a waste liquid inlet pipe (6) is fixedly provided on the fume hood (2); the waste liquid inlet pipe (6) is located above the waste liquid barrel (3); Delivery pipes (8) are fixedly provided on both sides of the fume hood (2); one end of the delivery pipe (8) extending into the interior of the fume hood (2) is rotatably provided with an atomizing nozzle (4); the other end of the delivery pipe (8) extending outside the fume hood (2) is connected to the dosing tank (1); The top of the fume hood (2) is in communication with the tail gas absorption pipe (5); The drug adding tank (1) is arranged on an outer side of the fume hood (2); A sodium hypochlorite inlet pipe (14) is fixedly provided on the dosing tank (1); the sodium hypochlorite inlet pipe (14) extends into the interior of the dosing tank (1).

2. The atomizing spraying acid gas absorption device according to claim 1 is characterized in that: The fume hood (2) has two.

3. The atomizing spraying acid gas absorption device according to claim 1 is characterized in that: The waste liquid inlet pipe (6) is provided with a diaphragm pump (7).

4. The atomizing spraying acid gas absorption device according to claim 1 is characterized in that: A rotating assembly is fixedly provided at one end of each of the conveying pipes (8) extending into the interior of the fume hood (2); The rotating assembly is connected to an atomizing nozzle (4) in a direction toward the inside of the fume hood (2).

5. The atomizing spraying acid gas absorption device according to claim 4 is characterized in that: The rotating assembly comprises a nozzle seat, a spherical rotating block (18) and a nozzle connecting pipe (19); The nozzle seat is composed of an upper nozzle seat (16) and a lower nozzle seat (17) spliced ​​together; The upper nozzle seat (16) is provided with an upper rotating groove (21) in the direction of the inner side of the fume hood (2); the upper nozzle seat (16) is provided with an upper liquid groove (22) in the direction of the outer side of the fume hood (2) and connected with the upper rotating groove (21) and the conveying pipe (8); the upper end of the upper nozzle seat (16) is provided with an upper threaded hole (23) in communication with the upper rotating groove (21); The lower nozzle seat (17) is provided with a lower rotating groove (24) in the direction of the inner side of the fume hood (2); the lower nozzle seat (17) is provided with a lower liquid groove (25) in the direction of the outer side of the fume hood (2) and connected with the lower rotating groove (24) and the conveying pipe (8); the lower end of the lower nozzle seat (17) is provided with a lower threaded hole (26) in communication with the lower rotating groove (24); The upper nozzle seat (16) and the lower nozzle seat (17) are both fixedly connected to one end of the delivery pipe (8) extending into the interior of the fume hood (2); the upper rotating groove (21) and the lower rotating groove (24) are spliced ​​together to form a rotating groove; the spherical rotating block (18) is rotatably arranged inside the rotating groove; The spherical rotating block (18) is of a hollow structure; a plurality of through holes (27) are formed on the spherical outer shell of the spherical rotating block (18); the upper liquid trough (22) and the lower liquid trough (25) are respectively connected to the inner hollow part of the spherical rotating block (18) through the through holes (27); A nozzle connecting pipe (19) is fixedly provided on the spherical rotating block (18) in a direction facing the inside of the fume hood (2); the nozzle connecting pipe (19) and the inner hollow part of the spherical rotating block (18) are connected via a through hole (27); The upper threaded hole (23) is internally threadedly connected to an upper screw rod (28); the lower end of the upper screw rod (28) abuts against the spherical rotating block (18); the upper screw rod (28) is fastened with a nut; the lower threaded hole (26) is internally threadedly connected to a lower screw rod (29); the upper end of the lower screw rod (29) abuts against the spherical rotating block (18); the lower screw rod (29) is fastened with a nut; The nozzle connecting pipe (19) is connected to an atomizing nozzle (4) in a direction close to the inner side of the fume hood (2).

6. The atomizing spraying acid gas absorption device according to claim 1 is characterized in that: A filter (10) is provided at the top of the drug adding tank (1); The interior of the filter (10) is divided into two filter chambers by a partition; filter screens (11) are provided in both filter chambers; The upper inlet of the filter chamber on one side is connected to the water inlet pipe (12); the lower outlet of the filter chamber on one side is connected to the interior of the dosing tank (1); The lower end inlet of the filter chamber on the other side is connected to the interior of the dosing tank (1); the side end outlet of the filter chamber on the other side is connected to the delivery pipe (8); and the side end outlet of the filter chamber on the other side is located above the filter screen (11).

7. The atomizing spraying acid gas absorption device according to claim 6 is characterized in that: The delivery pipe (8) is provided with a first delivery pump (9).

8. The atomizing spraying acid gas absorption device according to claim 6, characterized in that: A second delivery pump (13) is provided inside the drug adding tank (1); The inlet end of the second delivery pump (13) is connected to the sodium hypochlorite inlet pipe (14); The sodium hypochlorite inlet pipe (14) is passed through and extends out of the dosing tank (1); the outlet end of the second delivery pump (13) is connected to the sodium hypochlorite outlet pipe (15); and the sodium hypochlorite outlet pipe (15) is located inside the dosing tank (1).

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