A waste chlorine treatment device

Abstract

This utility model discloses a waste chlorine treatment device, comprising: a shell, wherein a spray chamber, a mixing chamber, and an absorption chamber are disposed inside the shell; the spray chamber is provided with a spray assembly, a packing assembly, and an air inlet assembly arranged sequentially from top to bottom, and the spray chamber is connected to the mixing chamber through a first vent pipe; the mixing chamber is connected to a mixer, the mixer including an upper fixed plate and a lower fixed plate, and multiple mixing units are disposed between the upper fixed plate and the lower fixed plate; the mixing chamber is connected to the absorption chamber through a second vent pipe; the absorption chamber is provided with a third vent pipe, and filter media is disposed inside the third vent pipe. This utility model, by setting up a spray chamber, a mixing chamber, and an absorption chamber, treats chlorine gas in three stages, making the chlorine gas treatment more thorough.

Description

Technical Field

[0001] This utility model belongs to the field of waste chlorine treatment, and specifically relates to a waste chlorine treatment device. Background Technology

[0002] Currently, sodium hydroxide is typically produced industrially by electrolyzing brine, with the reaction equation: 2NaCl + 2H₂O = (under electrolysis conditions) 2NaOH + H₂ + Cl₂. Chlorine gas is generated during the electrolytic production of sodium hydroxide. Direct release of chlorine into the atmosphere causes environmental pollution, and inhalation of large amounts of chlorine can be toxic to humans. Therefore, waste chlorine requires absorption and treatment.

[0003] Most existing waste chlorine treatment methods utilize absorption towers for absorption. However, simply using absorption towers for reaction absorption cannot completely remove chlorine gas, and some chlorine gas is still emitted into the air, affecting the atmospheric environment. Utility Model Content

[0004] This invention effectively avoids the aforementioned problems by setting up multiple layers of absorption.

[0005] To address the aforementioned problems in the existing technology, the technical solution adopted by this utility model is as follows:

[0006] A waste chlorine treatment device includes: a shell, wherein the shell is provided with a spray chamber, a mixing chamber and an absorption chamber;

[0007] The spray chamber is provided with a spray assembly, a filler assembly and an air inlet assembly from top to bottom. The spray chamber is connected to the mixing chamber through a first air vent pipe.

[0008] The mixing chamber is connected to a mixer, which includes an upper fixed plate and a lower fixed plate. Multiple mixing units are disposed between the upper fixed plate and the lower fixed plate. The mixing chamber is connected to the absorption chamber through a second vent pipe.

[0009] The absorption chamber is equipped with a third vent pipe, and the third vent pipe contains filter material (activated carbon).

[0010] By setting up a spray chamber, a mixing chamber, and an absorption chamber, the chlorine gas is treated three times, making the chlorine gas treatment more thorough.

[0011] Furthermore, the packing assembly includes a first packing layer and a second packing layer, which have the same structure. The first packing layer includes a shell with multiple slotted holes on its upper and lower sides, and packing material is disposed inside the shell. The packing assembly is designed to increase the contact area between the alkali solution and the waste chlorine, while simultaneously slowing down the flow rate of the alkali solution and prolonging the contact time between the alkali solution and the waste chlorine.

[0012] Furthermore, the spray assembly includes a spray pipe and multiple nozzles. The spray pipe is connected to a first circulation assembly, which provides alkaline solution to the spray pipe and sprays it out through the spray pipe.

[0013] Furthermore, the air intake assembly includes an air intake pipe, one end of which extends out of the housing, and the other end of which is connected to the air distribution plate. The air distribution plate has multiple air outlets on its lower side, and its upper side is connected to the spray chamber via a fixing bracket. Waste chlorine enters the air distribution plate through the air intake pipe, and then enters the spray chamber through the air distribution plate. To prevent alkaline solution from entering the air outlets of the air distribution plate, the air outlets are located on the lower side of the air distribution plate. Simultaneously, a fixing bracket is installed on the upper side of the air distribution plate to ensure the stability of the connection. The fixing bracket has a cross-shaped structure.

[0014] Furthermore, the first vent pipe is located between the packing assembly and the spray assembly. One end of the first vent pipe is located between the spray assembly and the packing assembly, and the other end of the first vent pipe is connected between the upper fixed plate and the lower fixed plate, so that the gas exiting the spray chamber enters the mixing chamber in the area between the upper fixed plate and the lower fixed plate. The first vent pipe is connected to a liquid baffle, which is an annular trumpet-shaped structure, and the outer ring of the liquid baffle is connected to the inside of the first vent pipe.

[0015] Furthermore, the four sides of the upper fixed plate and the four sides of the lower fixed plate are sealed to the mixing chamber. The upper and lower fixed plates divide the mixing chamber into three parts: the upper side of the upper fixed plate is used to hold the alkaline solution, the space between the upper and lower fixed plates is used to pass waste chlorine gas, and the lower side of the lower fixed plate is for the gas-liquid mixture after the reaction. Therefore, the upper and lower fixed plates need to be sealed to the inner wall of the mixing chamber to divide it into three areas.

[0016] Furthermore, multiple mixing units are provided between the upper and lower fixed plates. Each mixing unit includes a pressure cylinder connected to the upper fixed plate and a mixing cylinder connected to the lower fixed plate. The pressure cylinder has a conical structure that is wider at the top and narrower at the bottom, with a liquid inlet at the upper end and a pressurized outlet at the lower end. The mixing cylinder also has a conical structure that is wider at the bottom and narrower at the top, with a mixing port at the upper end and a discharge port at the lower end. The diameter of the mixing port is larger than the diameter of the pressurized outlet, and a gap exists between the mixing port and the pressurized outlet. The upper side of the upper fixed plate is an alkali chamber, the space between the upper and lower fixed plates is a gas chamber, and the lower side of the lower fixed plate is a mixing reaction chamber. The alkali chamber is connected to the mixing reaction chamber through a second circulation assembly.

[0017] Furthermore, the mixing port has a flared structure that is wider at the top and narrower at the bottom, which facilitates gas entry. The mixing unit also includes a connecting frame, with its two ends connected to the pressure cylinder and the mixing cylinder, respectively. Although the pressure cylinder is connected to the upper fixed plate and the mixing cylinder to the lower fixed plate, a connecting frame is attached to the outer walls of the pressure cylinder and the mixing cylinder to ensure their alignment. This ensures that the pressure outlet and the mixing port are coaxially aligned, thereby guaranteeing the smooth passage of the alkali solution. The second vent pipe has an "L"-shaped structure, with one end extending downwards into the absorption chamber, which contains absorbent liquid. The end of the second vent pipe is below the surface of the absorbent liquid.

[0018] Furthermore, there are three second vent pipes arranged side by side. The first circulation component and the second circulation component have the same structure, and the second circulation component is connected to a liquid exchange pipe, which is connected to a liquid exchange valve. The filter material is activated carbon.

[0019] The beneficial effects of this invention are as follows: through three-stage absorption reactions, waste chlorine can be treated more thoroughly, and the methods used each time are different. Some methods increase the contact area by using packing, some use negative pressure to automatically draw it in, and some use activated carbon adsorption at the end to ensure stable treatment of waste chlorine. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0022] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0023] Figure 4 for Figure 2 Cross-sectional view along the BB direction.

[0024] Figure 5 for Figure 3 A schematic diagram of the structure of the stuffing box.

[0025] Figure 6 for Figure 3 A schematic diagram of the structure of the mixer.

[0026] Figure 7 for Figure 6 A schematic diagram of the structure of the mixed monomers.

[0027] Figure 8 for Figure 7 A cross-sectional view along the CC direction.

[0028] Figure 9 for Figure 8 A magnified view of part D in the middle.

[0029] In the diagram: 1-Shell; 11-Spray chamber; 12-Mixing chamber; 13-Absorption chamber; 14-First partition; 15-Second partition; 21-Spray assembly; 22-First packing layer; 23-Second packing layer; 231-Shell shell; 232-Strip hole; 24-Air inlet assembly; 241-Air distribution plate; 242-Fixed frame; 25-First circulation assembly; 26-Second circulation assembly; 27-Liquid exchange valve; 3-First vent pipe; 31-Liquid baffle; 4-Mixer; 41-Upper fixed plate; 42-Liquid inlet; 43-Pressure cylinder; 431-Pressure outlet; 44-Mixing cylinder; 441-Mixing port; 45-Connecting frame; 46-Lower fixed plate; 47-Outlet; 5-Second vent pipe; 6-Activated carbon; 7-Third vent pipe. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and reference numerals.

[0031] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0035] Example 1:

[0036] like Figure 1-3 As shown, a waste chlorine treatment device includes: a shell 1, wherein the shell 1 is provided with a spray chamber 11, a mixing chamber 12 and an absorption chamber 13;

[0037] The spray chamber 11 is provided with a spray assembly 21, a packing assembly and an air inlet assembly 24 arranged sequentially from top to bottom. The spray chamber 11 is connected to the mixing chamber 12 through the first air pipe 3.

[0038] The mixing chamber 12 is connected to a mixer 4, which includes an upper fixed plate 41 and a lower fixed plate 46. Multiple mixing units are provided between the upper fixed plate 41 and the lower fixed plate 46. The mixing chamber 12 is connected to the absorption chamber 13 through a second vent pipe 5.

[0039] The absorption chamber 13 is provided with a third vent pipe 7, and the third vent pipe 7 is provided with filter material (activated carbon 6).

[0040] By setting up a spray chamber 11, a mixing chamber 12, and an absorption chamber 13, the chlorine gas is treated in three stages, making the chlorine gas treatment more thorough. Specifically, firstly, alkaline solution is sprayed in the spray chamber 11, allowing the alkaline solution to react with the waste chlorine gas, thus absorbing the waste chlorine once; in the mixing chamber 12, the alkaline solution reacts with the waste chlorine a second time through a mixer 4, thus treating the waste chlorine a second time; finally, the waste chlorine reacts with the alkaline solution a third time in the mixing chamber 12, and the gas after the reaction is filtered through activated carbon 6 before being discharged.

[0041] A first partition 14 is provided between the spray chamber 11 and the mixing chamber 12, and a second partition 15 is provided between the mixing chamber 12 and the absorption chamber 13.

[0042] Example 2:

[0043] Based on Example 1, such as Figure 5 As shown, the packing assembly includes a first packing layer 22 and a second packing layer 23. The first packing layer 22 and the second packing layer 23 have the same structure. The first packing layer 22 includes a shell 231. The shell 231 has multiple strip holes 232 on its upper and lower sides. The shell 231 contains packing material.

[0044] The packing assembly is designed to increase the contact area between the alkali solution and waste chlorine, while simultaneously slowing down the flow rate of the alkali solution and prolonging the contact time. While packing assemblies are existing technology, their focus is primarily on the internal packing material. This application's main improvement lies in the outer shell 231 of the packing assembly. Strip-shaped holes 232 are provided on the upper and lower sides of the shell 231. Due to the small distance between the two sides of the strip-shaped holes 232, a water film can form in the alkali solution, increasing the contact area and effectively slowing down the flow rate of waste chlorine. Furthermore, by using two packing assemblies, the reaction can be made more complete.

[0045] Example 3:

[0046] Based on Example 2, such as Figure 4As shown, the spray assembly 21 is existing technology and can be directly used here. The spray assembly 21 includes a spray pipe and multiple nozzles. The spray pipe is connected to the first circulation assembly 25. The first circulation assembly 25 is used to provide alkaline solution to the spray pipe and spray it out through the spray pipe.

[0047] The air intake assembly 24 includes an air intake pipe, one end of which extends out of the housing 1 and the other end of which is connected to the air distribution plate 241. The air distribution plate 241 has multiple air outlets on its lower side and the upper side of the air distribution plate 241 is connected to the spray chamber 11 through a fixing bracket 242.

[0048] Waste chlorine enters the air distribution plate 241 through the air inlet pipe, and then enters the spray chamber 11 through the air distribution plate 241. In order to prevent alkaline solution from entering the air outlet of the air distribution plate 241, the air outlet of the air distribution plate 241 is set on the lower side of the air distribution plate 241. At the same time, a fixing frame 242 is installed on the upper side of the air distribution plate 241 to ensure the stability of the connection of the air distribution plate 241. The fixing frame 242 has a "+" shaped structure.

[0049] Example 4:

[0050] Based on Example 3, such as Figure 6-9 As shown, the first vent pipe 3 is located between the packing assembly and the spray assembly 21. One end of the first vent pipe 3 is located between the spray assembly 21 and the packing assembly, and the other end of the first vent pipe 3 is connected between the upper fixed plate 41 and the lower fixed plate 46, so that when the gas coming out of the spray chamber 11 enters the mixing chamber 12, it is located in the area between the upper fixed plate 41 and the lower fixed plate 46. The first vent pipe 3 is connected to a liquid baffle 31, which has an annular trumpet-shaped structure, and the outer ring of the liquid baffle 31 is connected to the inside of the first vent pipe 3.

[0051] The four sides of the upper fixing plate 41 are sealed to the mixing chamber 12, and the four sides of the lower fixing plate 46 are sealed to the mixing chamber 12. This sealed connection means that each of the four sides of the upper fixing plate 41 is connected to the interior of the mixing chamber 12, preventing the alkali solution from flowing into the gas chamber within the alkali solution chamber. Similarly, after the lower fixing plate 46 is sealed to the mixing chamber 12, gas will not flow into the mixing reaction chamber from the connection point.

[0052] The upper fixed plate 41 and the lower fixed plate 46 divide the mixing chamber 12 into three parts. The upper side of the upper fixed plate 41 is used to hold the alkaline solution. Waste chlorine gas is introduced between the upper fixed plate 41 and the lower fixed plate 46. The lower side of the lower fixed plate 46 is the gas-liquid mixture after the reaction. Therefore, the upper fixed plate 41 and the lower fixed plate 46 need to be sealed to the inner wall of the mixing chamber 12 to divide the three areas.

[0053] A plurality of mixing units are provided between the upper fixing plate 41 and the lower fixing plate 46. The mixing unit includes a pressure cylinder 43 connected to the upper fixing plate 41 and a mixing cylinder 44 connected to the lower fixing plate 46.

[0054] The pressure cylinder 43 is a conical cylinder structure that is larger at the top and smaller at the bottom. The upper end of the pressure cylinder 43 is provided with a liquid inlet 42, and the lower end of the pressure cylinder 43 is provided with a pressurized liquid outlet 431.

[0055] The mixing cylinder 44 is a conical cylinder structure with a smaller top and a larger bottom. The upper end of the mixing cylinder 44 is provided with a mixing port 441, and the lower end of the mixing cylinder 44 is provided with a discharge port 47. The diameter of the mixing port 441 is larger than the diameter of the pressurized liquid outlet 431. There is a gap between the mixing port 441 and the pressurized liquid outlet 431 (the gap is left to facilitate the entry of waste chlorine).

[0056] The upper side of the upper fixed plate 41 is the alkali chamber, the space between the upper fixed plate 41 and the lower fixed plate 46 is the gas chamber, and the lower side of the lower fixed plate 46 is the mixing reaction chamber. The alkali chamber is connected to the mixing reaction chamber through the second circulation component 26.

[0057] During operation, the second circulation component 26 pumps the alkali solution from the bottom of the mixing reaction chamber into the alkali solution chamber. The alkali solution in the alkali solution chamber enters the pressure cylinder 43 through the liquid inlet 42, and then is ejected at high speed from the pressure outlet 431 into the mixing cylinder 44. When the alkali solution flows into the mixing cylinder 44 at high speed, a negative pressure is generated at the mixing port 441, which draws the waste chlorine in the gas chamber into the mixing cylinder 44. Since the mixing cylinder 44 has a structure that is smaller at the top and larger at the bottom, the flow rate of the alkali solution slows down as the internal space of the mixing cylinder 44 increases. At this time, the alkali solution and waste chlorine react again in the mixing cylinder 44, absorbing the waste chlorine. The gas-liquid mixture after the reaction flows into the mixing reaction chamber through the outlet 47. The alkali solution continues to work by being pumped into the alkali solution chamber through the second circulation component 26, and the gas enters the absorption chamber 13 through the second vent pipe 5.

[0058] Example 5:

[0059] Based on Example 4, the mixing port 441 has a flared structure that is larger at the top and smaller at the bottom, which is conducive to the entry of gas.

[0060] The mixing unit also includes a connecting frame 45, with its two ends connected to the pressure cylinder 43 and the mixing cylinder 44, respectively. Although the pressure cylinder 43 is connected to the upper fixed plate 41 and the mixing cylinder 44 is connected to the lower fixed plate 46, in order to ensure the alignment of the pressure cylinder 43 and the mixing cylinder 44, a connecting frame 45 is connected to the outer wall of the pressure cylinder 43 and the mixing cylinder 44 to ensure that the pressurized outlet 431 and the mixing port 441 are coaxially arranged, thereby ensuring that the alkali solution passes smoothly.

[0061] The second vent pipe 5 has an "L" shaped structure. One end of the second vent pipe 5 extends into the absorption chamber 13 and is positioned downwards. The absorption chamber 13 is filled with absorbent liquid, and the end of the second vent pipe 5 is below the surface of the absorbent liquid.

[0062] The second vent pipe 5 has three vent pipes, which are arranged side by side.

[0063] The first circulation component 25 and the second circulation component 26 have the same structure. The second circulation component 26 is connected to a liquid exchange pipe, which is connected to a liquid exchange valve 27. The upper side of the absorption chamber 13 is connected to a sealing cover. Opening the sealing cover allows the absorption liquid in the absorption chamber 13 to be replaced. The filter material in the third vent pipe 7 is activated carbon 6.

[0064] The specific working principle is as follows: First, waste chlorine gas passes through the air inlet assembly 24 and then through the spray chamber 11. The waste chlorine floats upward from the bottom, while the spray assembly 21 sprays alkaline solution from top to bottom. The alkaline solution reacts with the waste chlorine. Due to the packing assembly in the middle, the flow rate of the waste chlorine and alkaline solution can be slowed down, improving the reaction efficiency. After the waste chlorine undergoes one reaction, it enters the gas chamber of the mixing chamber 12 through the first vent pipe 3. Inside the mixing chamber 12, the alkaline solution flows into the mixing cylinder 44 at high speed through the pressurizing cylinder 43. During the high-speed flow, a negative pressure is generated in the gas chamber, which draws the waste chlorine into the mixing port 441. After the alkaline solution enters the mixing cylinder 44, as the inner diameter of the mixing cylinder 44 gradually increases, the flow rate of the alkaline solution slows down and reacts with the waste chlorine again in the mixing cylinder 44. The gas-liquid mixture after the reaction flows into the bottom of the mixing chamber 12. The gas then enters the absorption chamber 13 through the second vent pipe 5, reacts with the alkaline solution at the bottom of the absorption chamber 13, and is then discharged after being absorbed by the activated carbon 6 through the third vent pipe 7.

[0065] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.

Claims

1. A waste chlorine treatment device, characterized in that: include: The housing (1) is provided with a spray chamber (11), a mixing chamber (12) and an absorption chamber (13) inside the housing (1). The spray chamber (11) is provided with a spray assembly (21), a packing assembly and an air inlet assembly (24) in sequence from top to bottom. The spray chamber (11) is connected to the mixing chamber (12) through the first air pipe (3). The mixing chamber (12) is connected to a mixer (4), which includes an upper fixed plate (41) and a lower fixed plate (46). Multiple mixing units are provided between the upper fixed plate (41) and the lower fixed plate (46). The mixing chamber (12) is connected to the absorption chamber (13) through a second vent pipe (5). The absorption chamber (13) is provided with a third vent pipe (7), and the third vent pipe (7) is provided with filter material.

2. The waste chlorine treatment device according to claim 1, characterized in that: The packing assembly includes a first packing layer (22) and a second packing layer (23). The first packing layer (22) includes a shell (231). The shell (231) has multiple strip holes (232) on its upper and lower sides. The shell (231) contains packing material.

3. The waste chlorine treatment device according to claim 1, characterized in that: The air intake assembly (24) includes an air intake pipe, one end of which extends out of the housing (1) and the other end of which is connected to the air distribution plate (241). The air distribution plate (241) has multiple air outlets on its lower side and the upper side of the air distribution plate (241) is connected to the spray chamber (11) through a fixing bracket (242).

4. The waste chlorine treatment device according to claim 1, characterized in that: One end of the first vent pipe (3) is located between the spray assembly (21) and the packing assembly, and the other end of the first vent pipe (3) is connected between the upper fixed plate (41) and the lower fixed plate (46).

5. The waste chlorine treatment device according to claim 4, characterized in that: The first vent pipe (3) is connected to a liquid baffle (31), which is an annular horn-shaped structure.

6. The waste chlorine treatment device according to claim 1, characterized in that: The four sides of the upper fixing plate (41) are sealed to the mixing chamber (12), and the four sides of the lower fixing plate (46) are sealed to the mixing chamber (12).

7. The waste chlorine treatment device according to claim 6, characterized in that: A plurality of mixing units are provided between the upper fixing plate (41) and the lower fixing plate (46). The mixing unit includes a pressure cylinder (43) connected to the upper fixing plate (41) and a mixing cylinder (44) connected to the lower fixing plate (46). The pressure cylinder (43) is a conical cylinder structure with a larger upper part and a smaller lower part. The upper end of the pressure cylinder (43) is provided with a liquid inlet (42), and the lower end of the pressure cylinder (43) is provided with a pressurized liquid outlet (431). The mixing cylinder (44) is a conical cylinder structure with a smaller top and a larger bottom. The upper end of the mixing cylinder (44) is provided with a mixing port (441), and the lower end of the mixing cylinder (44) is provided with a discharge port (47). The diameter of the mixing port (441) is larger than the diameter of the pressurized liquid outlet (431), and there is a gap between the mixing port (441) and the pressurized liquid outlet (431).

8. The waste chlorine treatment device according to claim 7, characterized in that: The mixing unit also includes a connecting frame (45), the two ends of which are connected to the pressure cylinder (43) and the mixing cylinder (44), respectively.

9. The waste chlorine treatment device according to claim 1, characterized in that: The second vent pipe (5) has an "L" shaped structure. One end of the second vent pipe (5) extends into the absorption chamber (13) and is set downward. The absorption chamber (13) is filled with absorbent liquid, and the end of the second vent pipe (5) is below the liquid surface of the absorbent liquid.

10. The waste chlorine treatment device according to claim 1, characterized in that: The first circulation component (25) and the second circulation component (26) have the same structure. The second circulation component (26) is connected to a liquid exchange pipe, and the liquid exchange pipe is connected to a liquid exchange valve (27).

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