A multi-stage purification device for tail gas of tetrabromoethane production

Abstract

The utility model discloses a four bromoethane production tail gas multistage purification device, it includes two same jar body, the surface of jar body is provided with water tank, the top of water tank is provided with circulating pump, and the nearby of one jar body is provided with dosing tank, and the dosing tank export is communicated with one jar body through the hose. The utility model discloses a four bromoethane production tail gas is transported to the inner chamber of two jar bodies, and the circulating pump is started, makes the spray pipe spray lye and water, and makes lye and water through the filling to four bromoethane production tail gas and carry out purification, and the PH detector is started to detect the PH value of lye inside jar body continuously, when lye dilution, and the dosing tank is started to transport, can reach the multistage purification of four bromoethane production tail gas through the purification structure, avoids the sodium bromide crystal of four bromoethane production tail gas inlet pipe periphery to produce the blockage, guarantees the purification effect of four bromoethane production tail gas.

Description

Technical Field

[0001] This utility model belongs to the field of tetrabromoethane production technology, and in particular relates to a multi-stage purification device for tetrabromoethane production tail gas. Background Technology

[0002] The production process of tetrabromoethane produces exhaust gases with complex components and toxic substances, mainly including unreacted bromine, volatile organic compounds (such as ethylene and bromoethane), acidic gases (HBr), and a small amount of tetrabromoethane vapor. Direct emission of these gases would seriously pollute the environment and endanger human health. Therefore, the exhaust gases from tetrabromoethane production need to be purified to meet emission standards before being released.

[0003] In the traditional tetrabromoethane synthesis process, the tail gas purification mainly involves pipeline transportation to an alkaline absorption tank containing approximately 15% alkali solution, followed by discharge into the atmosphere via a vent pipe on the tank. This process can lead to sodium bromide crystals forming around the inlet pipe, causing blockages, and the alkali solution is easily saturated. Therefore, a multi-stage purification device for tetrabromoethane production tail gas is needed. This device can perform multi-stage purification of the tetrabromoethane production tail gas through its purification structure, preventing the formation of sodium bromide crystals around the inlet pipe and ensuring effective purification of the tail gas. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage purification device for tetrabromoethane production tail gas. This device can perform multi-stage purification of tetrabromoethane production tail gas through a purification structure, avoiding the blockage caused by sodium bromide crystals around the inlet pipe of tetrabromoethane production tail gas, thus ensuring the purification effect of tetrabromoethane production tail gas and solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A multi-stage purification device for tetrabromoethane production tail gas includes two identical tanks. A water tank is provided on the surface of each tank, and a circulation pump is provided on the top of the water tank. A dosing tank is located near one of the tanks, and the outlet of the dosing tank is connected to one of the tanks via a hose. Both tanks have a tank outlet on their top and a tank inlet on their back. A guide pipe is provided inside each tank, and the tank inlet communicates with the guide pipe. Two symmetrical grids are fixedly connected to the inner cavities of both tanks. The grating plate has packing material on its top, and a spray pipe is installed above the packing material. The outlet of the circulating pump is connected to two symmetrical spray pipes through pipes. A fixed base plate is installed next to one of the tanks, and an exhaust pipe is installed on the top of the fixed base plate. A fan is installed on the top of the fixed base plate, and the outlet of the fan is connected to the exhaust pipe. The air outlet of one of the tanks is connected to the air inlet of the other tank through a guide pipe. The air inlet of the other tank is connected to the inlet of the exhaust pipe through a duct. A pH meter is installed on the front of one of the tanks.

[0006] Preferably, both tanks have multiple observation ports on their front sides, and the surfaces of the observation ports are provided with transparent baffles.

[0007] Preferably, the inner cavity of one of the tanks is provided with an alkaline solution, and the inner cavity of the other tank is provided with water.

[0008] Preferably, the inlet of the circulating pump is connected to the water tank via a hose, and the inner cavity of the dosing tank is provided with alkali solution.

[0009] Preferably, the guide pipe is funnel-shaped, the outlet of the guide pipe is located below the air outlet of the tank, and multiple spray nozzles are provided at the bottom of the spray pipe.

[0010] The beneficial effects of this utility model are: 1. This utility model delivers the tail gas from tetrabromoethane production to the inner cavities of two tanks, starts a circulation pump, and sprays alkaline solution and water through a spray pipe. The alkaline solution and water then pass through the packing material to purify the tail gas. A pH meter is started to continuously monitor the pH value of the alkaline solution inside the tanks. When the alkaline solution is diluted, a dosing tank is started to deliver it. This allows for multi-stage purification of the tail gas from tetrabromoethane production through the purification structure, preventing the formation of sodium bromide crystals around the tail gas inlet pipe and avoiding blockage, thus ensuring the purification effect of the tail gas. 2. By setting a transparent baffle on the surface of the observation port, the inside of the tank can be observed through the baffle when the tank is being purified, avoiding the need for the user to remove the baffle on the surface of the observation port to observe the inside of the tank, thus improving the speed of the user's inspection of the inside of the tank. Attached Figure Description

[0011] in: Figure 1 This is a front view schematic diagram of one embodiment of the present utility model; Figure 2 This is a three-dimensional schematic diagram of a purification tank according to an embodiment of the present invention; Figure 3 This is a front view schematic diagram of a purification tank according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the left cross-section of the purification tank according to an embodiment of the present invention.

[0012] The attached diagram lists the components represented by each number as follows: 1. Tank body, 2. Water tank, 3. Circulating pump, 4. Dosing tank, 5. Tank outlet, 6. Tank inlet, 7. Guide pipe, 8. Grating plate, 9. Packing material, 10. Spray pipe, 11. Fixed base plate, 12. Exhaust pipe, 13. Fan, 14. pH meter, 15. Observation port. Detailed Implementation

[0013] In the following description, embodiments of the multi-stage purification device for tetrabromoethane production tail gas of this invention will be described with reference to the accompanying drawings.

[0014] Example 1: Figure 1-4This invention illustrates a multi-stage purification device for tetrabromoethane production tail gas according to an embodiment of the present invention. It includes two identical tanks 1, each with multiple observation ports 15 on its front. Each observation port 15 has a transparent baffle on its surface, allowing for easy observation of the interior of the tank 1 during purification. This eliminates the need for the user to remove the baffles, thus improving the speed of inspection. One tank 1 contains an alkaline solution, while the other contains water. A water tank 2 is mounted on the surface of each tank 1, and a circulation pump 3 is mounted on the top of the water tank 2. A dosing tank 4 is located near one of the tanks 1, with its outlet connected to one of the tanks 1 via a hose. Both tanks 1 have a tank outlet 5 on their tops. Both tanks 1 have air inlets 6 on their back sides. A guide pipe 7 is installed inside the tank 1, and the air inlets 6 are connected to the guide pipe 7. Two symmetrical grid plates 8 are fixedly connected to the inner cavities of both tanks 1. Packing material 9 is installed on the top of the grid plates 8, and a spray pipe 10 is installed above the packing material 9. The outlet of the circulating pump 3 is connected to the two symmetrical spray pipes 10 via pipes. A fixed base plate 11 is installed next to one of the tanks 1, and an exhaust pipe 12 is installed on the top of the fixed base plate 11. A fan 13 is installed on the top of the fixed base plate 11, and the outlet of the fan 13 is connected to the exhaust pipe 12. The air outlet 5 of one tank 1 is connected to the air inlet 6 of the other tank 1 via a guide pipe, and the air inlet 6 of the other tank 1 is connected to the inlet of the exhaust pipe 12 via a duct. A pH meter 14 is installed on the front of one of the tanks 1.

[0015] Example 2: Figure 1-4This invention illustrates a multi-stage purification device for tetrabromoethane production tail gas according to an embodiment of the present invention. It includes two identical tanks 1, with a water tank 2 mounted on the surface of each tank 1. A circulation pump 3 is mounted on the top of the water tank 2, and the inlet of the circulation pump 3 is connected to the water tank 2 via a hose. An alkaline solution is contained within the inner cavity of a dosing tank 4. A dosing tank 4 is located near one of the tanks 1, and its outlet is connected to the other tank 1 via a hose. Both tanks 1 have a tank outlet 5 on their tops and a tank inlet 6 on their backs. A funnel-shaped guide pipe 7 is installed within the inner cavity of each tank 1, with its outlet located below the tank outlet 5. Multiple spray nozzles are mounted at the bottom of a spray pipe 10. The tank inlets 6 and... The guide pipe 7 is connected, and two symmetrical grid plates 8 are fixedly connected to the inner cavity of both tanks 1. The top of the grid plate 8 is provided with packing material 9, and a spray pipe 10 is provided above the packing material 9. The outlet of the circulating pump 3 is connected to the two symmetrical spray pipes 10 through pipes. A fixed base plate 11 is provided next to one of the tanks 1. An exhaust pipe 12 is provided on the top of the fixed base plate 11. A fan 13 is provided on the top of the fixed base plate 11. The air outlet of the fan 13 is connected to the exhaust pipe 12. The air outlet 5 of one tank 1 is connected to the air inlet 6 of the other tank 1 through the guide pipe. The air inlet 6 of the other tank 1 is connected to the inlet of the exhaust pipe 12 through the air pipe. A pH meter 14 is provided on the front of one of the tanks 1.

[0016] Working principle: When using this utility model, the user delivers the tetrabromoethane production tail gas to the inner cavity of the two tanks 1, starts the circulation pump 3, and causes the circulation pump 3 to draw alkaline solution and water from the water tank 2. The spray pipe 10 sprays the alkaline solution and water, which then pass through the packing 9 to purify the tetrabromoethane production tail gas. After purification, the tetrabromoethane production tail gas is delivered to the interior of the exhaust pipe 12. The fan 13 is started, and the tetrabromoethane production tail gas is discharged through the exhaust pipe 12. The pH detector 14 is started to continuously detect the pH value of the alkaline solution inside one of the tanks 1. When diluting the alkaline solution, the dosing tank 4 is started to deliver the alkaline solution, avoiding the formation of sodium bromide crystals around the tetrabromoethane production tail gas inlet pipe and preventing blockage, thus ensuring the purification effect of the tetrabromoethane production tail gas.

[0017] In summary, this multi-stage purification device for tetrabromoethane production tail gas achieves multi-stage purification of the tetrabromoethane production tail gas by transporting the tail gas into the inner cavities of two tanks 1, activating the circulation pump 3, and spraying alkaline solution and water through the spray pipe 10. The alkaline solution and water then pass through the packing 9 to purify the tetrabromoethane production tail gas. The pH detector 14 continuously monitors the pH value of the alkaline solution inside the tank 1. When diluting the alkaline solution, the dosing tank 4 is activated for delivery. This multi-stage purification structure prevents sodium bromide crystals from forming and clogging the inlet pipe of the tetrabromoethane production tail gas, thus ensuring the purification effect of the tetrabromoethane production tail gas.

Claims

1. A multi-stage purification device for tail gas from tetrabromoethane production, characterized in that, The system includes two identical tanks (1), each with a water tank (2) on its surface and a circulation pump (3) on its top. A dosing tank (4) is located near one of the tanks (1), with its outlet connected to one of the tanks (1) via a hose. Both tanks (1) have air outlets (5) on their tops and air inlets (6) on their backs. A guide pipe (7) is installed inside each tank (1), and the air inlets (6) are connected to the guide pipe (7). Two symmetrical grid plates (8) are fixedly connected to the inner cavities of both tanks (1). A packing material (9) is installed on the top of each grid plate (8), and a packing material (9) is installed above the packing material (9). A spray pipe (10) is provided. The outlet of the circulating pump (3) is connected to two symmetrical spray pipes (10) through a pipe. A fixed base plate (11) is provided next to one of the tanks (1). An exhaust pipe (12) is provided on the top of the fixed base plate (11). A fan (13) is provided on the top of the fixed base plate (11). The air outlet of the fan (13) is connected to the exhaust pipe (12). The air outlet (5) of one of the tanks (1) is connected to the air inlet (6) of the other tank (1) through a guide pipe. The air inlet (6) of the other tank (1) is connected to the inlet of the exhaust pipe (12) through a duct. A pH meter (14) is provided on the front of one of the tanks (1).

2. The multi-stage purification device for tetrabromoethane production tail gas according to claim 1, characterized in that, Both of the tanks (1) have multiple observation ports (15) on their front sides, and the surface of each observation port (15) is provided with a transparent baffle.

3. The multi-stage purification device for tetrabromoethane production tail gas according to claim 2, characterized in that, One of the tanks (1) has an alkaline solution in its inner cavity, and the other tank (1) has water in its inner cavity.

4. The multi-stage purification device for tetrabromoethane production tail gas according to claim 3, characterized in that, The inlet of the circulating pump (3) is connected to the water tank (2) via a hose, and the inner cavity of the dosing tank (4) is filled with alkali solution.

5. A multi-stage purification device for tetrabromoethane production tail gas according to claim 4, characterized in that, The guide pipe (7) is funnel-shaped, and the outlet of the guide pipe (7) is located below the air outlet (5) of the tank. The bottom of the spray pipe (10) is provided with multiple spray nozzles.

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