Liquid chlorine vaporization device

Abstract

The utility model belongs to the technical field of liquid chlorine vaporization, and discloses a liquid chlorine vaporization device which comprises a vaporization tank, a coil pipe is arranged in the vaporization tank, one end of the coil pipe is a liquid chlorine inlet, and the other end of the coil pipe is a chlorine outlet; a chlorine inlet valve, an output valve, a chlorine pressure transmitter and a chlorine temperature transmitter are respectively arranged on the top surface of the chlorine buffer tank, and a discharge valve is arranged at the bottom of the chlorine buffer tank; the chlorine outlet is connected with a chlorine inlet valve through a stop valve, and the liquid chlorine inlet is connected with a liquid chlorine pipeline; a first pneumatic stop valve, a second pneumatic stop valve, a first manual valve, a second manual valve, a pneumatic control valve, a third manual valve, a manual stop valve and a liquid chlorine blow-down valve are sequentially arranged on the liquid chlorine pipeline according to the sequence from the liquid chlorine port valve to the liquid chlorine inlet; and a liquid chlorine pressure gauge is arranged on the liquid chlorine pipeline. The chlorine output pressure is constant, and the chlorine usage amount can be effectively controlled.

Description

Liquid chlorine vaporization device Technical Field

[0001] This utility model belongs to the field of liquid chlorine vaporization technology, specifically a liquid chlorine vaporization device. Background Technology

[0002] The amount of gaseous chlorine used can be precisely controlled by adjusting the gas flow rate, while the amount of liquid chlorine used is relatively more difficult to control. A vaporization device allows for precise control of the chlorine supply based on actual needs, avoiding overuse or underuse. Existing vaporization devices directly deliver chlorine from the vaporization tank to the reaction vessel, resulting in unstable output pressure and ineffective control over chlorine usage.

[0003] Reference CN110067936A discloses a safe and efficient liquid chlorine vaporization device, including a vaporization tank with a vaporization coil coiled inside. One end of the vaporization coil is connected to a liquid chlorine inlet, and the other end is a chlorine outlet. A sponge-mesh catalyst is installed inside the vaporization coil. The vaporization tank is connected to a hot water pipe. The sponge-mesh catalyst comes into full contact with the vaporized material, and within seconds, it can completely decompose the trace amounts of NCl3 in the chlorine gas into N2 and Cl2, eliminating the flammable and explosive NCl3 hazard in the system. However, the chlorine pressure output to the reactor is not stable enough, and the chlorine usage cannot be effectively controlled. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a liquid chlorine vaporization device with constant chlorine output pressure and effective control of chlorine usage.

[0005] To solve the above technical problems, this utility model provides a liquid chlorine vaporization device, including a vaporization tank, a coil inside the vaporization tank, one end of the coil being a liquid chlorine inlet and the other end being a chlorine outlet; it also includes a chlorine buffer tank, the top surface of which is respectively equipped with a chlorine inlet valve, an outlet valve, a chlorine pressure transmitter, and a chlorine temperature transmitter, and the bottom is equipped with a discharge valve; the chlorine outlet is connected to the chlorine inlet valve through a shut-off valve, and the liquid chlorine inlet is connected to a liquid chlorine pipeline; the liquid chlorine pipeline is equipped with, in the order from the liquid chlorine port valve to the liquid chlorine inlet, a pneumatic shut-off valve one, a pneumatic shut-off valve two, a manual valve one, a manual valve two, a pneumatic regulating valve, a manual valve three, a manual shut-off valve, and a liquid chlorine drain valve.

[0006] By adopting the above technical solution, by setting up a chlorine buffer tank outside the vaporization tank, adjusting the opening of the pneumatic regulating valve set on the liquid chlorine pipeline, and adjusting the amount of chlorine input to the chlorine buffer tank, the pressure peaks are absorbed or pressure troughs are replenished by adjusting the volume of chlorine input to the chlorine buffer tank, ensuring that the chlorine pressure output to the reactor is constant, the amount of chlorine used is effectively controlled, the safety and reliability of use are improved, and the quality of subsequent products and production safety are guaranteed.

[0007] Preferably, manual valve four is connected in parallel at both ends of manual valve two, pneumatic regulating valve, and manual valve three.

[0008] By adopting the above technical solution, when the pneumatic regulating valve is damaged, a new pneumatic regulating valve can be replaced by closing the manual valves at both ends of the pneumatic regulating valve. During replacement and maintenance, manual valve four should be opened to ensure that the vaporization device is working properly and that chlorine is supplied normally.

[0009] Preferably, a water inlet and a remote thermometer are provided on the top surface of the vaporization tank, a circulation inlet is provided on the upper part of one side wall of the vaporization tank, and a circulation outlet is provided at the bottom. A circulation pump is provided between the circulation inlet and the circulation outlet through a circulation pipe.

[0010] By adopting the above technical solution, the circulating pump circulates hot water through the circulating inlet and circulating outlet, forcing liquid chlorine to fully contact with the heated water, breaking the temperature stratification inside the vaporization tank, avoiding local overheating or overcooling of the coil, and improving the vaporization rate of liquid chlorine.

[0011] Preferably, an explosion-proof electric heating rod is installed on the bottom surface of the vaporization tank.

[0012] By adopting the above technical solutions, compared with steam heating, explosion-proof electric heating rods do not need to rely on external heat sources, such as boilers, reducing safety hazards caused by steam leakage or pressure fluctuations.

[0013] Preferably, a magnetic float level gauge is installed on the other side wall of the vaporization tank through the level gauge port.

[0014] By adopting the above technical solution, a magnetic float level gauge is installed on the side wall of the vaporization tank through the level gauge port. This is intuitive, reliable, safe, durable, and easy to maintain, thereby improving the accuracy and safety of liquid chlorine level monitoring.

[0015] Preferably, a bottle-changing suction valve and a nitrogen purging valve are respectively installed on the liquid chlorine pipeline between the liquid chlorine port valve and the pneumatic shut-off valve.

[0016] By adopting the above technical solution, the liquid chlorine port valve is connected to the steel cylinder via a copper pipe. When the liquid chlorine in the steel cylinder is used up and replaced with a new cylinder, the residual liquid chlorine in the copper pipe needs to be completely evacuated. A suction machine is used to remove the liquid chlorine from the copper pipe through the cylinder replacement suction valve, preventing liquid chlorine leakage. When the device is not in use and needs to be shut down, nitrogen gas is used to purge the coils, chlorine buffer tank, and transmission pipeline through the nitrogen purging valve. The purged liquid chlorine, chlorine gas, and impurities are discharged to the lime tank through the discharge valve, preventing these harmful substances from accumulating in the equipment and greatly reducing the risk of safety accidents such as poisoning, fire, and explosion caused by chlorine leakage.

[0017] Preferably, the liquid chlorine port valve, chlorine pressure transmitter, chlorine temperature transmitter, pneumatic shut-off valve one, pneumatic shut-off valve two, pneumatic regulating valve, remote thermometer, explosion-proof electric heating rod and PLC controller are connected.

[0018] By adopting the above technical solution, the PLC controller monitors the operating status of each component in real time, realizing automated control of liquid chlorine vaporization, chlorine pressure, and temperature.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. During the liquid chlorine vaporization process of this utility model, the pressure inside the coil may fluctuate instantaneously due to changes in the liquid chlorine vaporization rate, such as fluctuations in liquid level or heating temperature. By installing a chlorine buffer tank outside the vaporization tank and adjusting the opening of the pneumatic regulating valve installed on the liquid chlorine pipeline, the amount of chlorine input to the chlorine buffer tank can be adjusted. By adjusting the volume of chlorine input to the chlorine buffer tank, pressure peaks can be absorbed or pressure troughs can be replenished, ensuring a constant chlorine pressure output to the reactor. The amount of chlorine used can be effectively controlled, improving the safety and reliability of use and ensuring the quality of subsequent products and production safety.

[0021] 2. The chlorine buffer tank of this utility model is equipped with a chlorine pressure transmitter and a chlorine temperature transmitter on the top surface to provide real-time feedback on the chlorine pressure and temperature data inside the chlorine buffer tank. When the pressure or temperature exceeds the safety threshold, the interlock protection is triggered, the pneumatic regulating valve is closed to cut off the chlorine supply, or the emergency ventilation is activated to prevent chlorine leakage or explosion.

[0022] 3. This utility model incorporates a manual valve (II), a pneumatic regulating valve, and a manual valve (III) connected in series, with a fourth manual valve (IV) connected in parallel at both ends. When the pneumatic regulating valve fails, closing the manual valves at both ends allows for replacement with a new pneumatic regulating valve. During replacement or maintenance, the fourth manual valve is opened to ensure the vaporization device operates normally and chlorine is supplied normally. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the structure of this utility model;

[0024] Figure 2 is a schematic diagram of the chlorine buffer tank of this utility model;

[0025] Figure 3 is a schematic diagram of four manual valves connected in parallel on the pneumatic regulating valve of this utility model;

[0026] Figure 4 is a schematic diagram of the vaporization tank of this utility model.

[0027] Drawing numbers: 1. Liquid chlorine port valve, 2. Liquid chlorine pressure gauge, 3. Liquid chlorine drain valve, 4. Level gauge port, 5. Vaporization tank, 6. Coil, 7. Manual shut-off valve, 8. Circulation inlet, 9. Chlorine inlet valve, 10. Output valve, 11. Safety valve, 12. Chlorine pressure transmitter, 13. Chlorine temperature transmitter, 14. Liquid chlorine pipeline, 15. Discharge valve, 16. Bottle changing suction valve, 17. Nitrogen purging valve, 18. Chlorine Buffer tank, 19. Liquid chlorine inlet, 20. Chlorine outlet, 21. Pneumatic shut-off valve one, 22. Pneumatic shut-off valve two, 23. Manual valve one, 24. Manual valve two, 25. Pneumatic regulating valve, 26. Manual valve three, 27. PLC controller, 28. Manual valve four, 29. Circulation outlet, 30. Circulation pump, 31. Explosion-proof electric heating rod, 32. Magnetic float level gauge, 33. Remote thermometer, 34. Shut-off valve. Detailed Implementation

[0028] As shown in Figure 1, the liquid chlorine vaporization device includes a vaporization tank 5, inside which is a coil 6. One end of the coil 6 is a liquid chlorine inlet 19, and the other end is a chlorine outlet 20. The liquid chlorine inlet 19 extends out of the vaporization tank 5 and connects to a liquid chlorine pipeline 14, while the chlorine outlet 20 extends out of the vaporization tank 5 and connects to a shut-off valve 34. As shown in Figure 2, the liquid chlorine vaporization device also includes a chlorine buffer tank 18. The top surface of the chlorine buffer tank 18 is equipped with a chlorine inlet valve 9, an outlet valve 10, a chlorine pressure transmitter 12, and a chlorine temperature transmitter 13, respectively, and the bottom is equipped with a discharge valve 15. A safety valve 11 is also installed on the top surface of the chlorine buffer tank 18. The chlorine outlet 20 is connected to the chlorine inlet valve 9 via a shut-off valve 34, and the liquid chlorine inlet 19 is connected to the liquid chlorine pipeline 14. The liquid chlorine pipeline 14 is equipped with, in sequence from the liquid chlorine port valve 1 to the liquid chlorine inlet 19, a pneumatic shut-off valve 21, a pneumatic shut-off valve 22, a manual valve 23, a manual valve 24, a pneumatic regulating valve 25, a manual valve 26, a manual shut-off valve 7, and a liquid chlorine drain valve 3. A liquid chlorine pressure gauge 2 is installed on the liquid chlorine pipeline 14. During the liquid chlorine vaporization process of this application, the pressure inside the coil 6 will fluctuate instantaneously due to changes in the liquid chlorine vaporization rate, such as fluctuations in liquid level or heating temperature. By setting a chlorine buffer tank 18 outside the vaporization tank 5 and adjusting the opening of the pneumatic regulating valve 25 set on the liquid chlorine pipeline 14, the amount of chlorine input to the chlorine buffer tank 18 is adjusted. By adjusting the volume of chlorine input to the chlorine buffer tank 18, pressure peaks are absorbed or pressure troughs are replenished, ensuring that the chlorine pressure output to the reactor is constant. The amount of chlorine used is effectively controlled, improving the safety and reliability of use and ensuring the quality of subsequent products and production safety.

[0029] A bottle-changing suction valve 16 and a nitrogen purging valve 17 are respectively installed on the liquid chlorine pipeline 14 between the liquid chlorine port valve 1 and the pneumatic shut-off valve 21. The liquid chlorine port valve 1 is connected to the steel cylinder through a copper pipe. When the liquid chlorine in the steel cylinder is used up and a new steel cylinder is replaced, the residual liquid chlorine in the copper pipe needs to be purged clean. A suction machine is used to purge the liquid chlorine in the copper pipe through the bottle-changing suction valve 16 to prevent liquid chlorine leakage. When the device is not in use and needs to be shut down, nitrogen is purged through the nitrogen purging valve 17 to purge the coil 6, chlorine buffer tank 18, and transmission pipeline. The purged liquid chlorine, chlorine gas, and impurities are discharged to the lime pool through the discharge valve 15 to prevent these harmful substances from accumulating in the equipment, greatly reducing the risk of safety accidents such as poisoning, fire, and explosion caused by chlorine leakage.

[0030] The liquid chlorine port valve 1, chlorine pressure transmitter 12, chlorine temperature transmitter 13, pneumatic shut-off valve 1 21, pneumatic shut-off valve 2 22, pneumatic regulating valve 25, remote thermometer 33, explosion-proof electric heating rod 31 and PLC controller 27 are connected. The PLC controller 27 monitors the operating status of each component in real time to realize the automatic control of liquid chlorine vaporization, chlorine pressure and temperature.

[0031] As shown in Figure 3, manual valve 24, pneumatic regulating valve 25, and manual valve 3 26 are connected in series to form a valve group, with manual valve 4 28 connected in parallel at both ends of the valve group. When pneumatic regulating valve 25 is damaged, the manual valves at both ends of pneumatic regulating valve 25 can be closed to replace it with a new one. During replacement and maintenance, manual valve 4 28 should be opened to ensure that the vaporization device is working properly and that chlorine is supplied normally.

[0032] As shown in Figure 4, a water inlet and a remote thermometer 33 are installed on the top surface of the vaporization tank 5. A circulation inlet 8 is installed on the upper part of one side wall of the vaporization tank 5, and a circulation outlet 29 is installed at the bottom. A circulation pump 30 is installed between the circulation inlet 8 and the circulation outlet 29 through a circulation pipe. The circulation pump 30 circulates hot water through the circulation inlet 8 and the circulation outlet 29, forcing the liquid chlorine to fully contact the heated water, breaking the temperature stratification inside the vaporization tank 5, avoiding local overheating or undercooling of the coil 6, and improving the vaporization rate of the liquid chlorine.

[0033] An explosion-proof electric heating rod 31 is installed on the bottom of the vaporization tank 5. Compared with steam heating, the explosion-proof electric heating rod 31 does not rely on an external heat source, such as a boiler, reducing safety hazards caused by steam leakage or pressure fluctuations. A remote thermometer 33 detects the heating temperature, and the PLC controller 27 controls the switching of the explosion-proof electric heating rod 31 to achieve precise temperature control, avoiding chlorine decomposition due to overheating. At the same time, if the temperature is abnormal, the PLC controller 27 can cut off the heating power supply to ensure safety.

[0034] A magnetic level gauge 32 is installed on the other side wall of the vaporization tank 5 through the level gauge port 4. The magnetic level gauge 32 installed on the side wall of the vaporization tank 5 through the level gauge port 4 is intuitive, reliable, safe, durable, and easy to maintain, improving the accuracy and safety of liquid chlorine level monitoring.

[0035] During normal operation, liquid chlorine enters the liquid chlorine pipeline 14 from the liquid chlorine port valve 1, passing through pneumatic shut-off valve 1 21, pneumatic shut-off valve 2 22, manual valve 1 23, manual valve 2 24, pneumatic regulating valve 25, manual valve 3 26, manual shut-off valve 7, and liquid chlorine drain valve 3 to the vaporization tank 5. The explosion-proof electric heating rod 31 heats the water, vaporizing the liquid chlorine in the coil 6. The vaporized chlorine gas is then transported to the reaction vessel through the chlorine buffer tank 18. If the pneumatic regulating valve 25 fails, manual valves 2 24 and 3 26 are closed, the faulty pneumatic regulating valve 25 is disassembled and replaced, and manual valve 4 28 is opened to ensure the vaporization device operates normally and chlorine is supplied normally. A chlorine pressure transmitter 12 and a chlorine temperature transmitter 13 are installed on the top surface of the chlorine buffer tank 18 to provide real-time feedback on the chlorine pressure and temperature data inside the tank. When the pressure or temperature exceeds the safety threshold, the interlock protection is triggered, closing the pneumatic regulating valve 25 to cut off the chlorine supply, or activating emergency ventilation to prevent chlorine leakage or explosion. When the unit needs to be shut down, the liquid chlorine port valve 1 is closed, and nitrogen is purged through the nitrogen purging valve 17 to purge the coil 6, chlorine buffer tank 18, and transmission pipeline. The purged liquid chlorine, chlorine gas, and impurities are discharged to the lime pool through the discharge valve 15.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A liquid chlorine vaporization device, comprising a vaporization tank (5), wherein a coil (6) is provided inside the vaporization tank (5), one end of the coil (6) is a liquid chlorine inlet (19), and the other end is a chlorine outlet (20); characterized in that: It also includes a chlorine buffer tank (18), on the top surface of which a chlorine inlet valve (9), an outlet valve (10), a chlorine pressure transmitter (12) and a chlorine temperature transmitter (13) are respectively provided, and a discharge valve (15) is provided at the bottom; the chlorine outlet (20) is connected to the chlorine inlet valve (9) through a shut-off valve, and the liquid chlorine inlet (19) is connected to the liquid chlorine pipeline (14); the liquid chlorine pipeline (14) is provided with a pneumatic shut-off valve one (21), a pneumatic shut-off valve two (22), a manual valve one (23), a manual valve two (24), a pneumatic regulating valve (25), a manual valve three (26), a manual shut-off valve (7) and a liquid chlorine drain valve (3) in sequence from the liquid chlorine port valve (1) to the liquid chlorine inlet (19).

2. The liquid chlorine vaporization apparatus according to claim 1, characterized in that: The two ends of the manual valve 2 (24), pneumatic regulating valve (25), and manual valve 3 (26) connected in series are connected in parallel with manual valve 4 (28).

3. The liquid chlorine vaporization apparatus according to claim 1, characterized by: The vaporizer (5) is provided with a water inlet and a remote thermometer (33) on the top surface. A circulation inlet (8) is provided on the upper part of one side wall of the vaporizer (5), and a circulation outlet (29) is provided at the bottom. A circulation pump (30) is provided between the circulation inlet (8) and the circulation outlet (29) through a circulation pipe.

4. The liquid chlorine vaporization apparatus according to claim 1, characterized in that: An explosion-proof electric heating rod (31) is installed on the bottom surface of the vaporization tank (5).

5. The liquid chlorine vaporization apparatus according to claim 1, characterized in that: A magnetic float level gauge (32) is installed on the other side wall of the vaporization tank (5) through the level gauge port (4).

6. The liquid chlorine vaporization apparatus according to claim 1, characterized by: A bottle-changing suction valve (16) and a nitrogen purging valve (17) are respectively installed on the liquid chlorine pipeline (14) between the liquid chlorine port valve (1) and the pneumatic shut-off valve (21).

7. The liquid chlorine vaporization apparatus according to claim 1, 3, or 4, characterized in that: The liquid chlorine port valve (1), chlorine pressure transmitter (12), chlorine temperature transmitter (13), pneumatic shut-off valve one (21), pneumatic shut-off valve two (22), pneumatic regulating valve (25), remote thermometer (33), explosion-proof electric heating rod (31) and PLC controller (27) are connected.

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