External circulation acid mist absorption device

Abstract

The utility model discloses an external circulation acid mist absorption device, which relates to the technical field of acid mist treatment and comprises a barrel body and a circulating pump, an upper cover is arranged above the barrel body, an air inlet pipe and an air outlet pipe are arranged on the upper cover, an alkali adding pipe is arranged beside the air outlet pipe, the lower end of the air inlet pipe is connected with a coil pipe, and an inlet of the circulating pump is communicated with the lower portion of the barrel body through a pipeline. A vertical pipe is arranged at an outlet of the circulating pump, the upper end and the lower end of the vertical pipe are communicated with a spraying pipe and a liquid discharging pipe respectively, the spraying pipe is arranged on the upper portion of the interior of the barrel body, and a demister is arranged below the spraying pipe. According to the acid mist treatment device, the traditional chemical neutralization reaction principle is adopted, the advanced circulating pump and the spraying technology are combined, efficient treatment of acid mist is achieved, the design is compact and reasonable, operation is convenient, stability and reliability are achieved, the acid mist treatment device is made of high-quality PVC materials resistant to acid and alkali corrosion, good durability and anti-aging performance are achieved, and the service life is long; by adopting a combined mode of aeration, disturbance and spraying, the absorption efficiency is improved, and the emission standard is met.

Description

Technical Field

[0001] The utility model relates to the technical field of inventions, in particular to an external circulation acid mist absorption device. Background Art

[0002] Water treatment cannot do without the participation of "acid", which is used to adjust the pH of water and dissolve some as a regeneration agent for cation exchange resins. Common inorganic acids used in water treatment include hydrochloric acid and sulfuric acid, and organic acids include citric acid. However, liquid acid will volatilize acidic gases, and acidic gases will react to form acids when dissolved in water, including other compounds such as sulfur oxides and nitrogen oxides. The content of such gases in the atmosphere is extremely small, and in some areas it cannot even be detected. The presence of acidic gases will increase corrosion to pipelines and equipment and affect their service life. Acid mist absorption is an essential link in the removal of acidic gases. For example, the authorized patent CN201720824480.2 is an acid mist absorber that can solve the problem of acid mist absorption. The advantage of the above patent is that it can be recycled and reduce wastewater. In view of this feature, our company has also designed an acid mist absorption device with a double-layer external circulation design to achieve the purpose of rapid absorption. Utility Model Content

[0003] The utility model aims to provide an external circulation acid mist absorption device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external circulation acid mist absorption device, comprising a barrel body and a circulation pump, an upper cover is provided above the barrel body, an air inlet pipe and an air outlet pipe are provided on the upper cover, an alkali adding pipe is provided on the side of the air outlet pipe, the air inlet pipe extends into the bottom of the barrel body, the lower end of the air inlet pipe is connected to a coil, the inlet of the circulation pump is connected to the bottom of the barrel body through a pipeline, the outlet of the circulation pump is provided with a vertical pipe, the upper and lower ends of the vertical pipe are respectively connected to a spray pipe and a drain pipe, the spray pipe is arranged above the inside of the barrel body and a demister is provided below the spray pipe.

[0005] Preferably, the air inlet pipe and the air outlet pipe are connected at the top by a connecting pipe, and a one-way valve is provided in the middle of the connecting pipe.

[0006] Preferably: the upper cover is also provided with an observation window.

[0007] Preferably: a pH probe is also provided below the vertical pipe.

[0008] Furthermore: branch pipes are evenly distributed on both sides of the spray pipe, and nozzles are distributed below the branch pipes and face the top of the demister.

[0009] Furthermore: the main body of the drain pipe is attached to the inner wall of the barrel body, and spoiler pipes are evenly distributed on the inner side of the drain pipe, and the outlets of the spoiler pipes are inclined toward the center of the barrel body.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts the traditional chemical neutralization reaction principle, and combines the advanced circulation pump and spraying technology to achieve efficient treatment of acid mist, has a compact and reasonable design, is easy to operate, stable and reliable, is made of high-quality PVC material resistant to acid and alkali corrosion, has good durability and anti-aging performance, and has a long service life; it adopts a composite mode of aeration, disturbance and spraying to improve the absorption efficiency and meet the emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a front view of the utility model;

[0013] Figure 3 It is a schematic diagram of AA section view;

[0014] Figure 4 It is a schematic cross-sectional view of BB;

[0015] Figure 5 It is a cross-sectional schematic diagram of CC;

[0016] Figure 6 This is an enlarged schematic diagram of point D.

[0017] In the figure: 1. barrel body, 2. upper cover, 3. air inlet pipe, 4. connecting pipe, 5. one-way valve, 6. air outlet pipe, 7. alkali adding pipe, 8. circulating pump, 9. vertical pipe, 10. observation window, 11. PH probe, 12. drain valve, 13. demister, 14. coil, 15. drain pipe, 16. spray pipe, 17. branch pipe, 18. spoiler pipe. DETAILED DESCRIPTION

[0018] The present invention will be described below based on the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. However, it is worth noting that the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. However, for the parts that are not described in detail, those skilled in the art can also fully understand the present invention.

[0019] In addition, those skilled in the art should understand that the drawings are only provided to illustrate the purpose, features and advantages of the present invention, and the drawings are not actually drawn according to scale.

[0020] At the same time, unless the context clearly requires otherwise, the words "include", "comprises" and similar words throughout the specification and claims should be interpreted as inclusive rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0021] See also Figure 1-Figure 6 The utility model provides a technical solution: it includes a barrel body 1 and a circulation pump 8, an upper cover 2 is provided above the barrel body 1, an air inlet pipe 3 and an air outlet pipe 6 are provided on the upper cover 2, an alkali adding pipe 7 is provided beside the air outlet pipe 6, the air inlet pipe 3 extends into the bottom of the barrel body 1, the lower end of the air inlet pipe 3 is connected with a coil 14, the inlet of the circulation pump 8 is connected with the lower part of the barrel body 1 through a pipeline, the outlet of the circulation pump 8 is provided with a vertical pipe 9, the upper and lower ends of the vertical pipe 9 are respectively connected with a spray pipe 16 and a drain pipe 15, the spray pipe 16 is arranged above the inside of the barrel body 1 and a demister 13 is provided below the spray pipe 16.

[0022] The air inlet pipe 3 and the air outlet pipe 6 are connected at the top by a connecting pipe 4 , and a one-way valve 5 is provided in the middle of the connecting pipe 4 .

[0023] The upper cover 2 is also provided with an observation window 10 .

[0024] A pH probe 11 is also provided below the vertical pipe 9 .

[0025] Branch pipes 17 are evenly distributed on both sides of the spray pipe 16 , and nozzles are distributed below the branch pipes 17 and face the top of the demister 13 .

[0026] The main body of the liquid discharge pipe 15 is attached to the inner wall of the barrel body 1 , and spoiler pipes 18 are evenly distributed on the inner side of the liquid discharge pipe 15 , and the outlet of the spoiler pipe 18 is inclined toward the center of the barrel body 1 .

[0027] When using the utility model, the acid mist absorption device adopts the traditional chemical neutralization reaction principle. The whole is made of high-quality PVC material resistant to acid and alkali corrosion, the acid gas inlet pipe 3 is inserted into the bottom of the barrel 1 and connected with a coil 15, and the coil 15 is provided with through holes to realize the function of aeration, and alkali solution is added to the device through the alkali adding pipe 7. When the acid gas enters the device, it immediately reacts chemically with the alkali solution (preferably sodium hydroxide solution) in the device to generate harmless substances such as salts or water, and the inlet of the circulation pump 8 is sucked through the bottom of the barrel 1, and then discharged through the vertical pipe 9 in two ways, one way is refluxed into the reaction solution through the drain pipe 15, and the oblique spoiler pipe 18 can realize the overall rotation action, which plays a certain mixing role, and then the other way provides alkali solution to the spray pipe 16, and the treated air is discharged from the discharge pipeline, and discharged after reaching the standard, so as to realize the purpose of purifying the air.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external circulation acid mist absorption device, characterized in that: The invention comprises a barrel (1) and a circulation pump (8), wherein an upper cover (2) is arranged above the barrel (1), an air inlet pipe (3) and an air outlet pipe (6) are arranged on the upper cover (2), an alkali adding pipe (7) is arranged on the side of the air outlet pipe (6), the air inlet pipe (3) extends into the bottom of the barrel (1), the lower end of the air inlet pipe (3) is connected to a coil (14), the inlet of the circulation pump (8) is connected to the lower part of the barrel (1) through a pipeline, the outlet of the circulation pump (8) is provided with a vertical pipe (9), the upper and lower ends of the vertical pipe (9) are respectively connected to a spray pipe (16) and a liquid discharge pipe (15), the spray pipe (16) is arranged above the inside of the barrel (1) and a demister (13) is arranged below the spray pipe (16).

2. The external circulation acid mist absorption device according to claim 1 is characterized in that: The air inlet pipe (3) and the air outlet pipe (6) are connected at the top by a connecting pipe (4), and a one-way valve (5) is provided in the middle of the connecting pipe (4).

3. The external circulation acid mist absorption device according to claim 1 is characterized in that: The upper cover (2) is also provided with an observation window (10).

4. The external circulation acid mist absorption device according to claim 1 is characterized in that: A pH probe (11) is also provided below the vertical pipe (9).

5. The external circulation acid mist absorption device according to claim 1 is characterized in that: Branch pipes (17) are evenly distributed on both sides of the spray pipe (16), and spray heads are distributed below the branch pipes (17) and face the top of the demister (13).

6. The external circulation acid mist absorption device according to claim 1 is characterized in that: The main body of the liquid discharge pipe (15) is attached to the inner wall of the barrel body (1), and spoiler pipes (18) are evenly distributed on the inner side of the liquid discharge pipe (15), and the outlet of the spoiler pipe (18) is inclined toward the center of the barrel body (1).

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