Liquid caustic soda spraying device

Abstract

The utility model discloses a liquid alkali spraying device which comprises a liquid storage cylinder, alkali liquor is stored in the liquid storage cylinder, the upper surface of the liquid storage cylinder is communicated and provided with a spraying tower, the spraying tower is divided into three layers, the upper surface of the liquid storage cylinder is fixedly provided with a circulating pump, a liquid pumping opening of the circulating pump is communicated and provided with a liquid pumping pipe, and the liquid pumping pipe penetrates into the liquid storage cylinder. A liquid outlet of the circulating pump is communicated with a liquid discharging pipe, and the other end of the liquid discharging pipe penetrates into the spraying tower and is communicated with a spraying mechanism. Through the design of the spraying mechanism and the guide ring, the waste gas which is originally dispersed can be more intensively contacted with alkali liquor after being collected, so that the neutralization reaction can be more fully and efficiently carried out, the removal rate of acid gas in the waste gas is greatly improved, and the purified gas can better meet the environment-friendly emission standard.

Description

Technical Field

[0001] This utility model relates to the technical field of acidic waste gas purification devices, specifically a liquid alkali spraying device. Background Technology

[0002] In the preparation process of polyaluminum chloride (PAC), every step is closely related to product quality and environmental friendliness. Among these, the liquid alkali spraying device plays an indispensable role. With the continuous expansion of industrial production scale and increasingly stringent environmental standards, efficient and stable liquid alkali spraying devices have become a focus of attention in the PAC preparation field. PAC, as an important flocculant widely used in water treatment, papermaking, printing and dyeing, and many other industries, involves complex chemical reactions and physical operations in its preparation process. During the reaction, acidic waste gases such as hydrogen chloride are generated. If these are directly discharged without proper treatment, they will not only cause serious damage to the surrounding ecological environment and corrode equipment, but may also threaten the health of production personnel.

[0003] For example, the national authorized patent announcement number CN218131012U discloses an alkaline solution spraying device for preparing rubber softener, including an alkaline solution tank and a spray pipe. The spray pipe is installed on one side of the alkaline solution tank and communicates with it, and a liquid pump is installed on the spray pipe. The alkaline solution tank contains alkaline solution. The end of the spray pipe away from the alkaline solution tank is provided with a spraying mechanism for spraying alkaline solution. The top of the alkaline solution tank is connected to a feed hopper and equipped with a cover plate. Support plates are installed at both ends of the bottom of the alkaline solution tank, and a connecting pipe is horizontally installed on one side of the alkaline solution tank. A disc rotates horizontally at the bottom of the alkaline solution tank, and a circular groove is opened on the top of the disc. A stirring mechanism for stirring the alkaline solution is provided on the disc. This utility model, through the arrangement of the disc, the first gear, and the second gear, allows the rotation direction of the first stirring rod to be changed intermittently, ensuring the consistency of the alkaline solution concentration.

[0004] However, the aforementioned alkaline spraying device for preparing rubber softeners cannot guide and concentrate the waste gas before spraying it during the purification process. This results in the discharged waste gas being in a dispersed state, making it difficult to guarantee the area and time of contact with the alkaline solution. This means that the pollutants in the waste gas cannot fully react with the alkaline solution, resulting in a large amount of harmful substances being discharged without effective removal. This greatly reduces the treatment effect of the purification device on the waste gas, making it difficult for the emitted gas to meet environmental protection standards. Utility Model Content

[0005] The purpose of this invention is to provide a liquid alkali spraying device to solve the problem mentioned in the background art that the waste gas cannot be guided and concentrated before spraying during the purification process of waste gas by spraying alkali solution.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A liquid alkali spraying device includes: a storage tank containing alkali solution; a spraying tower with three layers connected to the upper surface of the storage tank; a circulating pump fixedly installed on the upper surface of the storage tank; a suction pipe connected to the suction port of the circulating pump extending into the storage tank; a discharge pipe connected to the discharge port of the circulating pump; and a spraying mechanism connected to the other end of the discharge pipe extending into the spraying tower.

[0008] Preferably, a ball valve is installed on the outer surface of the spray tower, and the ball valve allows acidic waste gas to be discharged into the spray tower.

[0009] Preferably, the upper surface of the spray tower is connected to a smoke exhaust port.

[0010] Preferably, the spraying mechanism includes a three-way pipe, which is connected to one end of the drain pipe and located inside the spraying tower. The other two ends of the three-way pipe are connected to drain rings, and the lower surface of the drain rings is connected to spray heads.

[0011] Preferably, the drain ring is located at the center of the guide ring, and the guide ring is fixedly installed on the inner ring wall of the spray tower.

[0012] Preferably, a collar is fixedly installed on the outer surface of the three-way pipe, and a cone is fixedly installed on the lower surface of the collar, so that the cone is suspended within the inner ring diameter of the drain ring, so that the acidic waste gas discharged can only rise through the gap between the guide ring and the cone. A drain ring is provided at the upper end between the guide ring and the cone, which can ensure that the alkaline solution sprayed by the drain ring comes into full contact with the acidic waste gas.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the spray tower, storage tank, circulating pump, guide ring, and spraying mechanism, during use, the circulating pump is started to draw the alkaline solution from the storage tank to the discharge pipe through the extraction pipe. The alkaline solution entering the discharge pipe can then be sprayed out from the spraying mechanism. The alkaline solution sprayed into the spray tower can then flow back into the storage tank for storage, thus forming a circulating spray of alkaline solution. Subsequently, waste gas containing acidic gases can be injected into the spray tower through the ball valve. As the waste gas rises within the spray tower, it passes through the gap between the guide ring and the spraying mechanism, allowing it to come into countercurrent contact with the waste gas entering from the bottom of the tower. This ensures that the sprayed alkaline solution reacts with the acidic gases. Neutralization reaction is used to purify waste gas. The acidic gases in the waste gas react with liquid alkali to form salts and water, thereby achieving the purpose of purifying the waste gas. The purified gas can then be discharged from the exhaust port installed on the upper surface of the spray tower. As the waste gas rises from the gap between the guide ring and the spray mechanism, it has a function of collecting the waste gas. After being collected, the waste gas rises in a relatively narrow and fixed channel, greatly increasing the contact area with the sprayed alkali solution. This allows the originally dispersed waste gas to come into more concentrated contact with the alkali solution, making the neutralization reaction more complete and efficient. This greatly improves the removal rate of acidic gases in the waste gas and ensures that the purified gas can better meet environmental emission standards.

[0015] 2. Through the design of the drain ring, tee pipe, and cone, when the waste gas containing acidic gases is injected into the spray tower through the ball valve, it can rise through the gap between the guide ring and the overhead cone as it ascends within the spray tower. A drain ring is installed at the upper end of the gap between the guide ring and the cone, allowing the drain ring to spray the collected waste gas through the spray heads. This allows the waste gas to pass through the first layer of the spray tower. Since the spray tower has three layers, the waste gas can be collected and sprayed three times. The purified gas can then exit through the spray head. The exhaust vents installed on the upper surface of the spray tower allow for multiple collection and spraying processes, significantly improving the treatment efficiency of the exhaust gas. As the exhaust gas passes through the three-layer spray tower, each layer undergoes collection and spraying, allowing the exhaust gas to have more opportunities to fully contact the alkaline solution. Each time the gas rises between the guide ring and the cone and is sprayed by the drain ring, the acidic gas can more comprehensively neutralize with the alkaline solution, thereby gradually reducing the content of pollutants in the exhaust gas. This ensures that the final discharged gas can highly meet or even far exceed environmental protection standards, effectively reducing environmental pollution. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the liquid alkali spraying device of this utility model;

[0017] Figure 2 This is a schematic diagram of the spray tower and guide ring of this utility model;

[0018] Figure 3 This is a schematic diagram of the spraying mechanism of this utility model.

[0019] In the diagram: 1. Spray tower; 101. Liquid storage tank; 102. Ball valve; 103. Circulating pump; 104. Drain pipe; 105. Smoke outlet; 106. Liquid extraction pipe; 107. Guide ring; 2. Spraying mechanism; 201. Drain ring; 202. T-pipe; 203. Cone; 204. Collar. Detailed Implementation

[0020] 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.

[0021] like Figures 1-2 As shown, this embodiment provides a liquid alkali spraying device, including: a storage tank 101, which stores alkali solution; a spraying tower 1 connected to the upper surface of the storage tank 101, the spraying tower 1 having three layers; a circulation pump 103 fixedly installed on the upper surface of the storage tank 101; a suction pipe 106 connected to the suction port of the circulation pump 103, the suction pipe 106 penetrating into the storage tank 101; a discharge pipe 104 connected to the discharge port of the circulation pump 103, the other end of the discharge pipe 104 penetrating into the spraying tower 1 and the end connected to a spraying mechanism 2; a ball valve 102 connected to the outer surface of the spraying tower 1, the ball valve 102 allowing acidic waste gas to be discharged into the spraying tower 1; and a flue gas outlet 105 connected to the upper surface of the spraying tower 1.

[0022] Through the design of the spray tower 1, storage tank 101, circulating pump 103, guide ring 107, and spray mechanism 2, during use, the circulating pump 103 can be started to draw the alkaline solution in the storage tank 101 to the discharge pipe 104 through the extraction pipe 106. The alkaline solution entering the discharge pipe 104 can then be sprayed out from the spray mechanism 2. The alkaline solution sprayed into the spray tower 1 can then flow back into the storage tank 101 for storage, thus forming a circulating spray of alkaline solution. Subsequently, waste gas containing acidic gas can be injected into the spray tower 1 through the ball valve 102. This allows the waste gas to rise within the spray tower 1, passing through the gap between the guide ring 107 and the spray mechanism 2 for spraying, enabling it to come into countercurrent contact with the waste gas entering from the bottom of the tower. The sprayed alkaline solution neutralizes the acidic gases to purify the waste gas. The acidic gases in the waste gas neutralize with the liquid alkali, producing salts and water, thus achieving the purpose of purifying the waste gas. The purified gas is then discharged from the exhaust port 105 connected to the upper surface of the spray tower 1. As the waste gas rises within the gap between the guide ring 107 and the spray mechanism 2, it has a gathering function. After being gathered, the waste gas rises within a relatively narrow and fixed channel, significantly increasing the contact area with the sprayed alkaline solution. This allows the originally dispersed waste gas to come into more concentrated contact with the alkaline solution, enabling the neutralization reaction to proceed more fully and efficiently. This greatly improves the removal rate of acidic gases in the waste gas, ensuring that the purified gas better meets environmental emission standards.

[0023] like Figure 3 As shown, the spraying mechanism 2 includes a three-way pipe 202, which is connected to one end of the drain pipe 104 and located inside the spraying tower 1. The other two ends of the three-way pipe 202 are connected to drain rings 201. Spray heads are connected to the lower surface of the drain rings 201. The drain rings 201 are located at the center of the guide rings 107, which are fixedly installed on the inner ring wall of the spraying tower 1.

[0024] The outer surface of the three-way pipe 202 is fixedly equipped with a collar 204, and the lower surface of the collar 204 is fixedly equipped with a cone 203. This allows the cone 203 to be suspended within the inner ring diameter of the drain ring 201, so that the acidic waste gas discharged can only rise through the gap between the guide ring 107 and the cone 203. The upper end between the guide ring 107 and the cone 203 is also provided with a drain ring 201, which allows the alkaline solution sprayed by the drain ring 201 to fully contact the acidic waste gas.

[0025] Through the design of the drain ring 201, the three-way pipe 202, and the cone 203, when the waste gas containing acidic gas is injected into the spray tower 1 through the ball valve 102, the waste gas can rise and pass through the gap between the guide ring 107 and the overhead cone 203 during its ascent within the spray tower 1. The drain ring 201 is located at the upper end of the gap between the guide ring 107 and the cone 203, allowing the drain ring 201 to spray the collected waste gas through the spray heads. This allows the waste gas to pass through the first layer of the spray tower 1. Since the spray tower 1 has three layers, the waste gas can be collected and sprayed three times, resulting in a cleaner product. The purified gas can be discharged from the exhaust port 105 installed on the upper surface of the spray tower 1. The multiple collection and spraying greatly improves the treatment effect in terms of waste gas purification efficiency. When the waste gas passes through the three-layer spray tower 1 in sequence, each layer is collected and sprayed, which allows the waste gas to have more opportunities to fully contact the alkaline solution. Each time it rises between the guide ring 107 and the cone 203 and is sprayed by the drain ring 201, the acidic gas can more comprehensively neutralize the alkaline solution, thereby gradually reducing the content of pollutants in the waste gas. This ensures that the final discharged gas can highly meet or even far exceed environmental protection standards, effectively reducing pollution to the environment.

[0026] Based on the above technical solution, the working steps of this solution are summarized as follows: During use, the circulating pump 103 can be started to draw the alkaline solution from the storage tank 101 to the drain pipe 104 through the extraction pipe 106. The alkaline solution entering the drain pipe 104 can rise and pass through the gap between the guide ring 107 and the overhead cone 203. A drain ring 201 is provided at the upper end of the gap between the guide ring 107 and the cone 203, enabling the drain ring 201 to spray the collected exhaust gas through the spray head. The operation allows the waste gas to pass through the first layer of the spray tower 1, which has three layers, thus enabling the waste gas to be collected and sprayed three times. This allows the waste gas to come into countercurrent contact with the waste gas entering from the bottom of the tower, allowing the sprayed alkaline solution to neutralize the acidic gas and purify the waste gas. The acidic gas in the waste gas neutralizes with the liquid alkali to produce salts and water, thereby achieving the purpose of purifying the waste gas. The purified gas can then be discharged from the exhaust port 105 installed on the upper surface of the spray tower 1.

[0027] In summary, this device allows the originally dispersed waste gas to be collected and brought into more concentrated contact with the alkaline solution, enabling the neutralization reaction to proceed more fully and efficiently. This greatly improves the removal rate of acidic gases in the waste gas and ensures that the purified gas can better meet environmental emission standards.

[0028] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid alkali spraying device, characterized in that, include: A storage tank (101) containing alkaline solution is provided. A spray tower (1) is connected to the upper surface of the storage tank (101). The spray tower (1) has three layers. A circulation pump (103) is fixedly installed on the upper surface of the storage tank (101). A suction pipe (106) is connected to the suction port of the circulation pump (103). The suction pipe (106) extends into the storage tank (101). A discharge pipe (104) is connected to the discharge port of the circulation pump (103). The other end of the discharge pipe (104) extends into the spray tower (1) and is connected to a spraying mechanism (2). The spraying mechanism (2) includes a three-way pipe (202), which is connected to one end of a drain pipe (104) and located inside the spray tower (1). The other two ends of the three-way pipe (202) are connected to drain rings (201), and spray heads are connected to the lower surface of the drain rings (201). The drain rings (201) are located at the center of a guide ring (107), which is fixedly installed on the inner wall of the spray tower (1). The three-way pipe (202)... A collar (204) is fixedly installed on the outer surface, and a cone (203) is fixedly installed on the lower surface of the collar (204). The cone (203) is suspended within the inner ring diameter of the drain ring (201), so that the acidic waste gas discharged can only rise through the gap between the guide ring (107) and the cone (203). A drain ring (201) is also provided at the upper end between the guide ring (107) and the cone (203), so that the alkaline solution sprayed by the drain ring (201) can fully contact the acidic waste gas.

2. The liquid alkali spraying device according to claim 1, characterized in that: A ball valve (102) is installed on the outer surface of the spray tower (1), and the ball valve (102) can allow acidic waste gas to be discharged into the spray tower (1).

3. The liquid alkali spraying device according to claim 1, characterized in that: The upper surface of the spray tower (1) is connected to a smoke exhaust port (105).

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