Acid mist reduction and recycling system

Abstract

The utility model discloses an acid mist reduction and recycling system which comprises a hydrochloric acid storage tank, an inlet of the hydrochloric acid storage tank is communicated with a discharge pump through a pipeline, a transmission energy dissipation device is arranged in the hydrochloric acid storage tank relative to the inlet of the hydrochloric acid storage tank, and the transmission energy dissipation device transmits hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank; the top of the hydrochloric acid storage tank is connected with a gas-water serial ejector through a pipeline, a water outlet of the gas-water serial ejector is connected with an acid mist absorption water tank through a pipeline, and a water outlet of the acid mist absorption water tank is communicated to a water inlet of the gas-water serial ejector and the in-situ high-pH wastewater neutralization tank through pipelines; and the in-situ high-pH wastewater neutralization tank is also connected with a water inlet of the acid mist absorption water tank through a pipeline. The problems that in the prior art, hydrochloric acid enters a storage tank to form a large amount of acid mist, and liquid for absorbing the acid mist needs secondary treatment are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of water treatment equipment, specifically relating to an acid mist reduction and recycling system. Background Technology

[0002] Current water treatment systems use large amounts of hydrochloric acid, which, due to its volatility, generates significant amounts of acid mist during transportation and storage. Acid mist treatment typically involves using a positive-pressure acid mist absorber. This absorbs the acid mist emitted under positive pressure by bringing tap water or alkali into contact with the mist, allowing it to enter the wastewater treatment system in liquid form.

[0003] However, the following problems often arise during the unloading, transfer, storage, and acid mist treatment of hydrochloric acid:

[0004] 1. Hydrochloric acid storage tanks are generally designed with a drop-type inlet method. When the unloading pump transfers hydrochloric acid from the tank truck to the storage tank, the hydrochloric acid entering the storage tank has a large kinetic energy. It impacts the hydrochloric acid liquid surface at the bottom of the tank, causing air disturbance in the sealed tank and pipeline system, forming a large amount of acid mist.

[0005] 2. During the unloading process, the pressure inside the tank is higher than atmospheric pressure. The tank is connected to the acid mist absorber system under positive pressure. The pipeline is generally connected by UPVC adhesive. Under positive pressure, acid mist is easily leaked at the sealing rings and adhesive joints of the tank and pipeline, which leads to environmental pollution, on-site corrosion and occupational health problems. This is also the current situation commonly faced in the maintenance and management of hydrochloric acid tank areas in water treatment systems in industries such as chemical, power and coal.

[0006] 3. The medium for absorbing acid mist is usually tap water, tap water, or sodium hydroxide. The acid mist treatment process increases the cost of water and chemicals, and wastes resources.

[0007] 4. The absorbed liquid is discharged into the wastewater tank and needs to be treated again, which further increases the treatment load and operating costs of the water treatment system. Utility Model Content

[0008] The purpose of this invention is to provide an acid mist reduction and recycling system, which solves the problems in the prior art where hydrochloric acid enters the storage tank and forms a large amount of acid mist, and the liquid that absorbs the acid mist needs secondary treatment.

[0009] The technical solution adopted in this utility model is an acid mist reduction and recycling system, including a hydrochloric acid storage tank. The inlet of the hydrochloric acid storage tank is connected to a discharge pump via a pipeline. A transmission energy dissipation device is installed inside the hydrochloric acid storage tank relative to the inlet position. The transmission energy dissipation device transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank. The top of the hydrochloric acid storage tank is connected to an air-water series jet via a pipeline. The outlet of the air-water series jet is connected to an acid mist absorption tank via a pipeline. The outlet of the acid mist absorption tank is connected to the inlet of the air-water series jet and an in-situ high pH wastewater neutralization tank via a pipeline. The in-situ high pH wastewater neutralization tank is also connected to the inlet of the acid mist absorption tank via a pipeline.

[0010] The present invention is further characterized in that:

[0011] The energy dissipation device includes an energy dissipation straight pipe connected to the inlet of the hydrochloric acid storage tank. The other end of the energy dissipation straight pipe is close to the bottom of the hydrochloric acid storage tank and is connected to an energy dissipation elbow. The other end of the energy dissipation elbow is connected to an energy dissipation diffuser. The energy dissipation diffuser is truncated cone-shaped, and the end with the smaller diameter is connected to the energy dissipation elbow.

[0012] The energy-dissipating diffuser head is located below the liquid level inside the hydrochloric acid storage tank.

[0013] The energy transmission and dissipation device is made of inner and outer rubber-lined tubing or fiberglass.

[0014] The outlet of the acid mist absorption tank is connected to a centrifugal pump. The outlet of the centrifugal pump is connected to the inlet of the gas-water series ejector and the in-situ high pH wastewater neutralization tank through a pipeline. An absorption shut-off valve is installed on the pipeline connecting the centrifugal pump and the gas-water series ejector, and a recovery shut-off valve is installed on the pipeline connecting the centrifugal pump and the in-situ high pH wastewater neutralization tank.

[0015] An inlet valve is installed on the inlet pipe connecting the in-situ high pH wastewater neutralization tank and the acid mist absorption tank.

[0016] A motor is installed at the top of the in-situ high pH wastewater neutralization tank. The output end of the motor is connected to a drive shaft, and the other end of the drive shaft is connected to a stirring fan.

[0017] The air-water series ejector is the ZS series water-air series ejector.

[0018] The beneficial effects of this utility model are:

[0019] (1) The acid mist reduction and recycling system of this utility model reduces acid mist at the source by using a transmission energy dissipation device, and uses a gas-water series jet to form a micro negative pressure system to control the acid mist process, avoiding positive pressure acid mist gas leakage to the environment. It uses alkaline wastewater in the in-situ high pH wastewater neutralization tank as the acid mist absorption medium, realizes water saving and consumption reduction, waste treatment, meets the needs of industrial water resource conservation and utilization, and promotes the sound operation of the water treatment system.

[0020] (2) The acid mist reduction and recycling system of this utility model adopts a transmission energy dissipation device, which makes the acid inlet of the hydrochloric acid storage tank located below the liquid surface, and uses a diffusion connector as the liquid outlet, which reduces the acid inlet flow rate. Source treatment can reduce the amount of acid mist by 30% to 50%, thereby reducing the risk of acid mist leakage.

[0021] (3) The acid mist reduction and recycling system of this utility model connects the acid mist absorption tank to the in-situ high pH wastewater neutralization tank. The in-situ high pH wastewater neutralization tank provides a medium for acid mist absorption, without the need for additional self-water or sodium hydroxide. At the same time, the gas-water series jet achieves the mixing of acid mist and high pH wastewater, and converts the acid mist from the gas-liquid droplet state to the liquid state.

[0022] (4) The acid mist reduction and recycling system of this utility model uses a centrifugal pump to connect the acid mist absorption tank and the air-water series jet to provide high-speed water flow and create conditions for acid mist absorption. After the hydrochloric acid is unloaded, the centrifugal pump transports the acidic liquid in the acid mist absorption tank to the in-situ high pH wastewater neutralization tank to replace part of the sulfuric acid or hydrochloric acid industrial products, so as to realize the "waste treatment" of wastewater absorption of hydrochloric acid mist. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the acid mist reduction and recycling system of this utility model.

[0024] In the diagram, 1. Hydrochloric acid storage tank, 2. Transmission energy dissipation device, 3. Acid mist absorption water tank, 4. Centrifugal pump, 5. Gas-water series jet, 6. In-situ high pH wastewater neutralization tank, 7. Inlet valve, 8. Absorption shut-off valve, 9. Recovery shut-off valve, 10. Energy dissipation straight pipe, 11. Energy dissipation elbow, 12. Energy dissipation diffuser. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] This utility model relates to an acid mist reduction and recycling system, such as Figure 1 As shown, it includes a hydrochloric acid storage tank 1. The inlet of the hydrochloric acid storage tank 1 is connected to a discharge pump via a pipeline. A transmission energy dissipation device 2 is installed inside the hydrochloric acid storage tank 1 at a position relative to the inlet of the hydrochloric acid storage tank 1. The transmission energy dissipation device 2 transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank 1.

[0028] The top of the hydrochloric acid storage tank 1 is connected to a gas-water series ejector 5 via a pipe. The outlet of the gas-water series ejector 5 is connected to an acid mist absorption tank 3 via a pipe. The outlet of the acid mist absorption tank 3 is connected to the inlet of the gas-water series ejector 5 and an in-situ high pH wastewater neutralization tank 6 via a pipe. The in-situ high pH wastewater neutralization tank 6 is also connected to the inlet of the acid mist absorption tank 3 via a pipe.

[0029] In water treatment systems of industries such as chemical, power, and coal, the pH of high-pH wastewater needs to be controlled to around 7 in the in-situ high-pH wastewater neutralization tank 6. Currently, industrial sulfuric acid and hydrochloric acid are mainly used to adjust the pH. This utility model system uses high-pH wastewater to absorb acid mist and lower the pH of the wastewater. Then, the wastewater with the lowered pH is transported back into the in-situ high-pH wastewater neutralization tank 6 to replace part of the industrial sulfuric acid or hydrochloric acid, thus achieving "waste treatment with waste" by absorbing hydrochloric acid mist from the wastewater.

[0030] This invention employs a transmission energy dissipation device 2 to reduce acid mist at its source, and uses a gas-water series ejector 5 to form a micro-negative pressure system for process control of acid mist, preventing positive pressure acid mist gas from leaking into the environment. It utilizes the in-situ high-pH alkaline wastewater in the existing water treatment system as the acid mist absorption medium, and the absorbed acid mist is then returned to the in-situ high-pH wastewater neutralization tank 6, achieving water conservation and consumption reduction, waste-to-waste treatment, meeting the needs of industrial water resource conservation and utilization, promoting the sound operation of the water treatment system, and improving occupational health.

[0031] Example 2

[0032] The present invention provides an acid mist reduction and recycling system, including a hydrochloric acid storage tank 1. The inlet of the hydrochloric acid storage tank 1 is connected to a discharge pump via a pipeline. A transmission energy dissipation device 2 is installed inside the hydrochloric acid storage tank 1 at a position relative to the inlet of the hydrochloric acid storage tank 1. The transmission energy dissipation device 2 transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank 1.

[0033] Furthermore, the energy dissipation device 2 includes an energy dissipation straight pipe 10 connected to the inlet of the hydrochloric acid storage tank 1. The other end of the energy dissipation straight pipe 10 is close to the bottom of the hydrochloric acid storage tank 1 and is connected to an energy dissipation elbow 11. The other end of the energy dissipation elbow 11 is connected to an energy dissipation diffuser 12. The energy dissipation diffuser 12 is frustoconical, and the end with the smaller diameter is connected to the energy dissipation elbow 11.

[0034] Furthermore, the energy dissipation diffuser 12 is located below the liquid surface inside the hydrochloric acid storage tank 1.

[0035] During hydrochloric acid unloading, a transmission energy dissipation device 2 is used. The acid inlet of the storage tank is located below the liquid surface. The outlet of the energy dissipation diffuser 12 is enlarged to reduce the acid inlet flow rate. Source treatment can reduce the amount of acid mist by 30%-50%, thereby reducing the risk of acid mist leakage.

[0036] The top of the hydrochloric acid storage tank 1 is connected to the air inlet of the gas-water series ejector 5 through a pipeline. The gas-water series ejector 5 forms a micro negative pressure pipeline system, which further prevents acid mist from leaking from the tank and pipeline into the workshop. The outlet of the gas-water series ejector 5 is connected to the acid mist absorption tank 3 through a pipeline. The outlet of the acid mist absorption tank 3 is connected to the inlet of the gas-water series ejector 5 and the in-situ high pH wastewater neutralization tank 6 through a pipeline. The in-situ high pH wastewater neutralization tank 6 is also connected to the inlet of the acid mist absorption tank 3 through a pipeline.

[0037] Example 3

[0038] The present invention provides an acid mist reduction and recycling system, including a hydrochloric acid storage tank 1. The inlet of the hydrochloric acid storage tank 1 is connected to a discharge pump via a pipeline. A transmission energy dissipation device 2 is installed inside the hydrochloric acid storage tank 1 at a position relative to the inlet of the hydrochloric acid storage tank 1. The transmission energy dissipation device 2 transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank 1.

[0039] Furthermore, the material of the energy transmission and dissipation device 2 is inner and outer lined with rubber tubing or fiberglass.

[0040] The use of inner and outer rubber-lined tubing or fiberglass as the material for the energy dissipation device 2 has the following advantages:

[0041] Hydrochloric acid is highly corrosive. The rubber linings of the inner and outer tubing, along with the fiberglass itself, possess excellent chemical corrosion resistance, effectively resisting hydrochloric acid erosion, preventing damage to the equipment due to corrosion, extending the equipment's service life, reducing the risk of leakage caused by corrosion, and ensuring the safe and stable operation of the system. Simultaneously, during the transmission of hydrochloric acid, some solid particles may be trapped, or high-speed flow may cause scouring. The rubber linings of the inner and outer tubing have a certain degree of elasticity and wear resistance, and the fiberglass also has good wear resistance, enabling them to withstand a certain degree of scouring and wear, reducing wear on the inner walls of the equipment and lowering maintenance costs.

[0042] Fiberglass has excellent electrical insulation properties. In some special working environments, such as those with static electricity risks or near electrical equipment, it can effectively prevent safety accidents caused by static electricity accumulation or electrical faults, thereby improving system safety.

[0043] Furthermore, the manufacturing cost of inner and outer lined rubber hoses and fiberglass is relatively low, and due to their corrosion resistance and wear resistance, the cost of frequent replacement and maintenance is reduced. In the long run, they have a good economic cost-performance ratio and reduce the overall system operating cost.

[0044] The top of the hydrochloric acid storage tank 1 is connected to the air inlet of the gas-water series injector 5 through a pipeline. The gas-water series injector 5 forms a micro negative pressure pipeline system, which further prevents acid mist from leaking into the workshop from inside the tank and pipeline.

[0045] The outlet of the air-water series jet 5 is connected to the acid mist absorption tank 3 via a pipe. The outlet of the acid mist absorption tank 3 is connected to the inlet of the air-water series jet 5 and the in-situ high pH wastewater neutralization tank 6 via a pipe. The in-situ high pH wastewater neutralization tank 6 is also connected to the inlet of the acid mist absorption tank 3 via a pipe.

[0046] Example 4

[0047] The present invention provides an acid mist reduction and recycling system, including a hydrochloric acid storage tank 1. The inlet of the hydrochloric acid storage tank 1 is connected to a discharge pump via a pipeline. A transmission energy dissipation device 2 is installed inside the hydrochloric acid storage tank 1 at a position relative to the inlet of the hydrochloric acid storage tank 1. The transmission energy dissipation device 2 transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank 1.

[0048] The top of the hydrochloric acid storage tank 1 is connected to a gas-water series ejector 5 via a pipe. The outlet of the gas-water series ejector 5 is connected to an acid mist absorption tank 3 via a pipe. The outlet of the acid mist absorption tank 3 is connected to the inlet of the gas-water series ejector 5 and an in-situ high pH wastewater neutralization tank 6 via a pipe. The in-situ high pH wastewater neutralization tank 6 is also connected to the inlet of the acid mist absorption tank 3 via a pipe.

[0049] Furthermore, the outlet of the acid mist absorption tank 3 is connected to a centrifugal pump 4. The outlet of the centrifugal pump 4 is connected to the inlet of the gas-water series ejector 5 and the in-situ high pH wastewater neutralization tank 6 through a pipeline. An absorption shut-off valve 8 is installed on the pipeline connecting the centrifugal pump 4 and the gas-water series ejector 5, and a recovery shut-off valve 9 is installed on the pipeline connecting the centrifugal pump 4 and the in-situ high pH wastewater neutralization tank 6.

[0050] Furthermore, an inlet valve 7 is installed on the inlet pipe connecting the in-situ high pH wastewater neutralization tank 6 and the acid mist absorption tank 3.

[0051] In practical use, this invention injects hydrochloric acid into the hydrochloric acid storage tank 1 via a discharge pump. Under the action of the transmission energy dissipation device 2, the liquid flows smoothly into the hydrochloric acid storage tank 1, avoiding the direct injection of hydrochloric acid liquid into the hydrochloric acid storage tank 1, which would cause it to fall and splash, forming a large amount of acid mist. Then, the inlet valve 7 is opened to inject a certain amount of high-pH alkaline wastewater into the acid mist absorption tank 3. The recovery shut-off valve 9 is kept closed, and the absorption shut-off valve 8 is opened. The air-water series ejector 5 and the centrifugal pump 4 are started. The high-pH alkaline wastewater inside the acid mist absorption tank 3 is injected into the air-water series ejector 5 under the action of the centrifugal pump 4 to absorb the acid mist. The absorbed liquid falls back into the acid mist absorption tank 3, and then the cycle is repeated until the absorption of acid mist is completed.

[0052] Then close the absorption shut-off valve 8 and open the recovery shut-off valve 9 to return the wastewater whose pH value has dropped due to the absorption of acid mist to the original high pH wastewater neutralization tank 6, replacing part of the sulfuric acid or hydrochloric acid industrial products, and realizing the "waste treatment with waste" of wastewater absorbing hydrochloric acid mist.

[0053] Example 5

[0054] The present invention provides an acid mist reduction and recycling system, including a hydrochloric acid storage tank 1. The inlet of the hydrochloric acid storage tank 1 is connected to a discharge pump via a pipeline. A transmission energy dissipation device 2 is installed inside the hydrochloric acid storage tank 1 at a position relative to the inlet of the hydrochloric acid storage tank 1. The transmission energy dissipation device 2 transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank 1.

[0055] The top of the hydrochloric acid storage tank 1 is connected to a gas-water series ejector 5 via a pipe. The outlet of the gas-water series ejector 5 is connected to an acid mist absorption tank 3 via a pipe. The outlet of the acid mist absorption tank 3 is connected to the inlet of the gas-water series ejector 5 and an in-situ high pH wastewater neutralization tank 6 via a pipe. The in-situ high pH wastewater neutralization tank 6 is also connected to the inlet of the acid mist absorption tank 3 via a pipe.

[0056] Furthermore, a motor is installed at the top of the in-situ high pH wastewater neutralization tank 6, and the output end of the motor is connected to a drive shaft, the other end of which is connected to a stirring fan.

[0057] Furthermore, the outlet of the acid mist absorption tank 3 is connected to a centrifugal pump 4. The outlet of the centrifugal pump 4 is connected to the inlet of the gas-water series ejector 5 and the in-situ high pH wastewater neutralization tank 6 through pipelines. The centrifugal pump 4 and the gas-water series ejector 5 create a slight negative pressure state in the tank and pipeline, so that the acid mist no longer leaks from the inside to the outside.

[0058] This method utilizes existing high-pH wastewater from a water treatment system as an absorbent for acid mist absorption. The acid unloading process involves two steps: the in-situ high-pH wastewater is introduced into an acid mist absorption tank, and the high-pH wastewater is transported by a centrifugal pump 4 through an air-water series jet 5. Under high flow rate conditions, the wastewater mixes with the acid mist and absorbs the acid mist into the wastewater, thus adjusting the pH level and achieving "waste-to-waste" end-of-pipe treatment of in-situ high-pH wastewater and acid mist.

[0059] Example 6

[0060] Based on the above embodiments 1 to 5, the air-water series injector 5 is a ZS series water-air series injector.

[0061] The ZS series water-vapor tandem ejector models include:

[0062] ZS-60L: Evaporation capacity is 755 kg / h, exhaust volume is 60 m³ / h, and working water pressure is 3 kgf / cm².

[0063] ZS-80L: Evaporation capacity is 755 kg / h, exhaust volume is 80 m³ / h, and working water pressure is 3 kgf / cm².

[0064] ZS-100L: Evaporation capacity is 755 kg / h, exhaust volume is 100 m³ / h, and working water pressure is 3 kgf / cm².

[0065] ZS-120L: Evaporation capacity is 755kg / h, exhaust volume is 120m³ / h, and working water pressure is 3kgf / cm².

[0066] ZS-130L: Evaporation capacity is 755 kg / h, exhaust volume is 130 m³ / h, and working water pressure is 3 kgf / cm².

[0067] ZS-150L: Evaporation capacity is 755kg / h, exhaust volume is 150m³ / h, and working water pressure is 3kgf / cm².

[0068] ZS-180L: Evaporation capacity is 680kg / h, exhaust volume is 180m³ / h, and working water pressure is 4kgf / cm².

[0069] ZS-230L: Evaporation capacity is 680kg / h, exhaust volume is 230m³ / h, and working water pressure is 4kgf / cm².

[0070] The ZS series water-steam tandem ejector boasts numerous significant advantages. Its simple and straightforward structural design, consisting of water and steam jets with no relatively moving parts, greatly reduces the likelihood of mechanical failures, ensuring equipment durability and reliability, reducing maintenance frequency and costs. Furthermore, it facilitates transportation and installation in various locations, exhibiting strong adaptability to different installation environments and allowing for low-level installation, effectively saving space. Operationally, it demonstrates high convenience and safety, requiring no complex professional skills or knowledge from operators. After simple training, staff can easily master its operation, providing strong support for efficient and stable production processes. Therefore, it plays a vital role in numerous industrial applications, helping enterprises improve production efficiency and economic benefits while reducing operational management difficulties and costs.

[0071] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An acid mist reduction and recycling system, characterized in that, Includes a hydrochloric acid storage tank (1), the inlet of which is connected to a discharge pump via a pipeline, and a transmission energy dissipation device (2) is provided inside the hydrochloric acid storage tank (1) relative to the inlet of the hydrochloric acid storage tank (1). The transmission energy dissipation device (2) transmits the hydrochloric acid injected by the discharge pump to the bottom of the hydrochloric acid storage tank (1). The top of the hydrochloric acid storage tank (1) is connected to a gas-water series jet (5) via a pipe. The outlet of the gas-water series jet (5) is connected to an acid mist absorption tank (3) via a pipe. The outlet of the acid mist absorption tank (3) is connected to the inlet of the gas-water series jet (5) and the in-situ high pH wastewater neutralization tank (6) via a pipe. The in-situ high pH wastewater neutralization tank (6) is also connected to the inlet of the acid mist absorption tank (3) via a pipe.

2. The acid mist reduction and recycling system according to claim 1, characterized in that, The energy dissipation device (2) includes an energy dissipation straight pipe (10) connected to the inlet of the hydrochloric acid storage tank (1). The other end of the energy dissipation straight pipe (10) is close to the bottom of the hydrochloric acid storage tank (1) and is connected to an energy dissipation elbow (11). The other end of the energy dissipation elbow (11) is connected to an energy dissipation diffuser (12). The energy dissipation diffuser (12) is frustoconical, and the end with the smaller diameter is connected to the energy dissipation elbow (11).

3. The acid mist reduction and recycling system according to claim 2, characterized in that, The energy dissipation diffuser (12) is located below the liquid level inside the hydrochloric acid storage tank (1).

4. The acid mist reduction and recycling system according to claim 1, characterized in that, The energy dissipation device (2) is made of inner and outer rubber-lined tubing or fiberglass.

5. The acid mist reduction and recycling system according to claim 1, characterized in that, The outlet of the acid mist absorption tank (3) is connected to a centrifugal pump (4). The outlet of the centrifugal pump (4) is connected to the inlet of the gas-water series jet (5) and the in-situ high pH wastewater neutralization tank (6) through a pipeline. An absorption shut-off valve (8) is installed on the connecting pipeline between the centrifugal pump (4) and the gas-water series jet (5), and a recovery shut-off valve (9) is installed on the connecting pipeline between the centrifugal pump (4) and the in-situ high pH wastewater neutralization tank (6).

6. The acid mist reduction and recycling system according to claim 1, characterized in that, An inlet valve (7) is installed on the inlet connecting pipe between the in-situ high pH wastewater neutralization tank (6) and the acid mist absorption tank (3).

7. The acid mist reduction and recycling system according to claim 1, characterized in that, The in-situ high pH wastewater neutralization tank (6) is equipped with a motor at the top, and the output end of the motor is connected to a drive shaft. The other end of the drive shaft is connected to a stirring fan.

8. The acid mist reduction and recycling system according to claim 1, characterized in that, The air-water series injector (5) is a ZS series water-air series injector.

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