Tailing treatment device for phosphorus trichloride production
By designing a tail material treatment device for the production of phosphorus trichloride, the phosphorus trichloride in the tail material gas is purified by heat exchange and acid-base reaction, the problem of tail material gas emission pollution is solved, and the effective collection and purification of tail material gas is achieved. Treatment avoids environmental pollution.
Patent Information
- Application Number
- CN202421115749.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The tail gas produced during the production of phosphorus trichloride contains a small amount of phosphorus trichloride, which will cause environmental pollution.
A tail material treatment device for the production of phosphorus trichloride is designed, including a water tank, heat exchange pipe, liquid collection tank, alkali liquid tank, connecting pipe and exhaust pipe. The tail material is collected and purified through heat exchange and acid-base reaction. Phosphorus trichloride in the gas to prevent it from being discharged into the environment.
Effectively collect and purify the tail gas emitted from the production of phosphorus trichloride, avoid environmental pollution, and accelerate cooling and liquefaction by rotating the motor and stirring paddles, and prevent alkaline water mist from being released through the defogging device.
Smart Images
Figure CN222305358U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of phosphorus trichloride production, in particular to a tailings processing device for phosphorus trichloride production. Background Art
[0002] Phosphorus trichloride is an inorganic compound produced by the reaction of chlorine gas and liquid yellow phosphorus. It is mainly used to manufacture organophosphorus compounds and is also used as a reagent.
[0003] At present, some tailings gas is generated in the process of phosphorus trichloride production. This tailings gas contains a small amount of phosphorus trichloride, and direct discharge will cause environmental pollution. Therefore, we propose a tailings treatment device for phosphorus trichloride production. Utility Model Content
[0004] The utility model aims to provide a tailings processing device for phosphorus trichloride production, which has the advantages of being able to collect residual phosphorus trichloride in tailings gas discharged from phosphorus trichloride production, and purify the tailings gas before discharging it, thereby avoiding environmental pollution, and solving the problem that part of tailings gas is generated in the current phosphorus trichloride production process, and this part of tailings gas contains a small amount of phosphorus trichloride, and direct discharge will cause environmental pollution.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tailings processing device for phosphorus trichloride production, comprising a water tank and an alkali liquid tank, one side of the upper surface of the water tank is fixedly connected with an air intake pipe, the lower surface of the air intake pipe is fixedly connected with a heat exchange pipe, and the heat exchange pipe is located inside the water tank, the end of the heat exchange pipe is fixedly connected with a liquid collecting tank, the upper surface of the liquid collecting tank is fixedly connected with a one-way valve, and the end of the one-way valve is fixed to the lower surface of the water tank, the upper surface of the water tank is fixedly installed with an alkali liquid tank, the side of the upper surface of the water tank away from the air intake pipe is fixedly connected with a connecting pipe, and the end of the connecting pipe is located inside the alkali liquid tank, and the upper surface of the alkali liquid tank is fixedly connected with an exhaust pipe.
[0006] Preferably, a demister is fixedly installed inside the alkali liquid box near the upper surface.
[0007] Preferably, a rotating motor is fixedly mounted on the upper surface of the water tank, a stirring paddle is fixedly connected to the end of the output shaft of the rotating motor, and the stirring paddle is located inside the water tank.
[0008] Preferably, four legs are equidistantly and fixedly connected to the lower surface of the water tank in a circular array near the edge.
[0009] Preferably, a drain valve is fixedly connected to the outer surface of the liquid collecting tank near the lower surface.
[0010] Preferably, a pH probe is fixedly mounted on the bottom of the inner wall of the water tank, a display screen is fixedly mounted on the front surface of the water tank, and the display screen and the pH probe are electrically connected.
[0011] Preferably, a water inlet valve is fixedly connected to the upper surface of the water tank near the front surface.
[0012] Preferably, a drain valve is fixedly connected to the outer surface of the water tank near the lower surface.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] 1. The utility model achieves the effect of collecting residual phosphorus trichloride in tail gas discharged from phosphorus trichloride production by arranging a water tank, a heat exchange pipe, an air inlet pipe, a liquid collecting tank, an alkali liquid tank, a connecting pipe and an exhaust pipe, and purifies the tail gas before discharging it to avoid environmental pollution. The tail gas discharged from phosphorus trichloride production enters the heat exchange pipe through the air inlet pipe, and the tail gas exchanges heat with water in the water tank through the heat exchange pipe, then the residual phosphorus trichloride in the tail gas is cooled and liquefied and collected in the liquid collecting tank, the cooled tail gas directly enters the water tank to react with water to produce phosphorous acid and hydrochloric acid, etc., the gas after passing through the water enters the alkali liquid tank through the connecting pipe to contact with the alkaline liquid, the tail gas is treated and purified again, and the treated gas is discharged from the exhaust pipe.
[0015] 2. The utility model achieves the effect of cooling and liquefying phosphorus trichloride in the tail gas by arranging a rotating motor and a stirring paddle. The rotating motor drives the stirring paddle to rotate, so that the water inside the water tank is fully in contact with the heat exchange tube. When phosphorus oxychloride flows inside the heat exchange tube, it can fully exchange heat with the water through the heat exchange tube and be cooled and liquefied.
[0016] 3. The utility model achieves the effect of preventing the alkaline liquid inside the alkali liquid tank from being discharged from the exhaust pipe along with the gas by providing a demister. Before the gas is discharged from the exhaust pipe, the alkaline water mist inside the alkali liquid tank condenses together and drips into the alkali liquid tank when it contacts the demister. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0020] Figure 4 It is a partial main sectional structural schematic diagram of the liquid collecting box of the utility model.
[0021] Figure numerals: 1. water tank; 2. air inlet pipe; 3. alkali liquid tank; 4. exhaust pipe; 5. connecting pipe; 6. rotating motor; 7. water inlet valve; 8. display screen; 9. support leg; 10. liquid collecting tank; 11. drain valve; 12. pH probe; 13. heat exchange tube; 14. demister; 15. stirring paddle; 16. one-way valve; 17. drain valve. DETAILED DESCRIPTION
[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0023] Embodiment 1
[0024] like Figure 1-Figure 4 As shown, the utility model proposes a tailings treatment device for phosphorus trichloride production, comprising a water tank 1 and an alkali liquid tank 3, an air inlet pipe 2 is fixedly connected to one side of the upper surface of the water tank 1, a heat exchange pipe 13 is fixedly connected to the lower surface of the air inlet pipe 2, and the heat exchange pipe 13 is located inside the water tank 1, a liquid collecting tank 10 is fixedly connected to the end of the heat exchange pipe 13, a drain valve 17 is fixedly connected to the outer surface of the liquid collecting tank 10 near the lower surface, the phosphorus trichloride liquid collected in the liquid collecting tank 10 is discharged through the drain valve 17, a one-way valve 16 is fixedly connected to the upper surface of the liquid collecting tank 10, and the end of the one-way valve 16 is fixed to the lower surface of the water tank 1, the alkali liquid tank 3 is fixedly installed on the upper surface of the water tank 1, and the back of the upper surface of the water tank 1 A connecting pipe 5 is fixedly connected to one side away from the air inlet pipe 2, and the end of the connecting pipe 5 is located inside the alkali liquid tank 3. An exhaust pipe 4 is fixedly connected to the upper surface of the alkali liquid tank 3. A demister 14 is fixedly installed inside the alkali liquid tank 3 near the upper surface. Before the gas is discharged from the exhaust pipe 4, the alkaline water mist inside it condenses together and drips into the alkali liquid tank 3 when it contacts the demister 14, so as to prevent the alkaline water mist from entering the external environment. Four legs 9 are fixedly connected in a circular array at equal intervals near the edge of the lower surface of the water tank 1, an inlet valve 7 is fixedly connected to the upper surface of the water tank 1 near the front surface, and a drain valve 11 is fixedly connected to the outer surface of the water tank 1 near the lower surface.
[0025] When the utility model is in use, tail gas discharged from phosphorus trichloride production enters into heat exchange tube 13 through air inlet pipe 2, and heat is exchanged between tail gas and water in water tank 1 through heat exchange tube 13, then residual phosphorus trichloride in tail gas is cooled and liquefied and collected in liquid collecting tank 10, and the tail gas after cooling directly enters into water tank 1 to react with water to produce phosphorous acid and hydrochloric acid, etc., and the gas after passing through water enters into alkali liquid tank 3 through connecting pipe 5 to contact with alkaline liquid, and the tail gas is treated and purified again, and the treated gas is discharged from exhaust pipe 4.
[0026] Embodiment 2
[0027] like Figure 1-Figure 3As shown, the utility model proposes a tailings treatment device for phosphorus trichloride production. Compared with the first embodiment, the present embodiment also includes a rotating motor 6 fixedly installed on the upper surface of the water tank 1, a stirring paddle 15 is fixedly connected to the end of the output shaft of the rotating motor 6, and the stirring paddle 15 is located inside the water tank 1, a pH probe 12 is fixedly installed on the bottom of the inner wall of the water tank 1, a display screen 8 is fixedly installed on the front surface of the water tank 1, and the display screen 8 and the pH probe 12 are electrically connected, the pH probe 12 detects the pH value inside the water tank 1, and displays it through the display screen 8, so as to replace the water inside the water tank 1 in time.
[0028] In this embodiment, the rotating motor 6 drives the stirring paddle 15 to rotate, so that the water inside the water tank 1 is fully in contact with the heat exchange tube 13. When phosphorus oxychloride flows inside the heat exchange tube 13, it can fully exchange heat with the water through the heat exchange tube 13 and be cooled and liquefied.
[0029] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
Claims
1. A tailings treatment device for phosphorus trichloride production, comprising a water tank (1) and an alkali liquid tank (3), characterized in that: An air intake pipe (2) is fixedly connected to one side of the upper surface of the water tank (1), a heat exchange pipe (13) is fixedly connected to the lower surface of the air intake pipe (2), and the heat exchange pipe (13) is located inside the water tank (1), and the end of the heat exchange pipe (13) is fixedly connected to a liquid collecting box (10), and a one-way valve (16) is fixedly connected to the upper surface of the liquid collecting box (10), and the end of the one-way valve (16) is fixed to the lower surface of the water tank (1), and an alkali liquid tank (3) is fixedly installed on the upper surface of the water tank (1), and a connecting pipe (5) is fixedly connected to the side of the upper surface of the water tank (1) away from the air intake pipe (2), and the end of the connecting pipe (5) is located inside the alkali liquid tank (3), and an exhaust pipe (4) is fixedly connected to the upper surface of the alkali liquid tank (3).
2. A tailings treatment device for phosphorus trichloride production according to claim 1, characterized in that: A demister (14) is fixedly installed inside the alkali liquid box (3) near the upper surface.
3. A tailings treatment device for phosphorus trichloride production according to claim 1, characterized in that: A rotating motor (6) is fixedly mounted on the upper surface of the water tank (1), a stirring paddle (15) is fixedly connected to the end of the output shaft of the rotating motor (6), and the stirring paddle (15) is located inside the water tank (1).
4. A tailings treatment device for phosphorus trichloride production according to claim 1, characterized in that: Four legs (9) are fixedly connected at equal intervals in a circular array near the edge of the lower surface of the water tank (1).
5. A tailings treatment device for phosphorus trichloride production according to claim 1, characterized in that: A drain valve (17) is fixedly connected to the outer surface of the liquid collecting box (10) at a position close to the lower surface.
6. A tailings treatment device for phosphorus trichloride production according to claim 1, characterized in that: A pH probe (12) is fixedly mounted on the bottom of the inner wall of the water tank (1), a display screen (8) is fixedly mounted on the front surface of the water tank (1), and the display screen (8) and the pH probe (12) are electrically connected.
7. A tailings treatment device for phosphorus trichloride production according to claim 6, characterized in that: A water inlet valve (7) is fixedly connected to the upper surface of the water tank (1) at a position close to the front surface.
8. A tailings treatment device for phosphorus trichloride production according to claim 6, characterized in that: A drainage valve (11) is fixedly connected to the outer surface of the water tank (1) at a position close to the lower surface.