Absorption and desorption device with safety instrument system

Abstract

The utility model discloses an absorption and desorption device with a safety instrument system, and particularly relates to the technical field of chemical engineering principle experiment teaching, which comprises a support frame, a water tank fixedly arranged at the top of the support frame, a water inlet pipe arranged at the top of the water tank in a penetrating manner, and an absorption pump fixedly arranged on one side of the water tank, an absorption mechanism is fixedly arranged on one side of the absorption pump and comprises a first conveying pipe fixedly arranged at the output end of the absorption pump, an absorption tower is arranged at one end of the first conveying pipe in a penetrating mode, a connecting pipe is arranged at the bottom end of the absorption tower in a penetrating mode, and a buffer tank is arranged at one end of the connecting pipe in a penetrating mode; and two liquid level sensors are arranged in the buffer tank in a penetrating manner. The absorption and desorption device effectively avoids the influence of flow velocity mismatching of absorption liquid and desorption liquid on the experiment process, further maintains stable experiment conditions and protects normal operation of equipment, and meanwhile, the whole absorption and desorption device is provided with a safety instrument system, so that the safety of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical engineering principle experimental teaching technology, and more specifically, to an absorption and desorption device with a safety instrument system. Background Technology

[0002] As the chemical industry gradually moves towards the era of intelligence, the automation control of chemical instrumentation is booming, and chemical equipment is becoming more and more diverse and intelligent. The three major development trends of safety, intelligence and sustainability will continue to deepen their impact on the chemical industry.

[0003] A search revealed that Chinese Patent CN211936263U discloses a three-tower absorption and desorption experimental device. Air from the fan outlet main pipe is split into two streams. One stream enters the bottom of the saturated tower via a flow meter, where it comes into countercurrent contact with the absorbent sprayed from the top of the tower for absorption. The absorbed exhaust gas is then discharged into the atmosphere. The other stream enters the bottom of the absorption tower via a flow meter, where it comes into countercurrent contact with the oxygen-deficient aqueous solution sprayed from the top of the tower for absorption. The absorbed exhaust gas is also discharged into the atmosphere. This device features a safe experimental system, convenient installation and operation, continuous operation of the experimental process, and recycling of experimental water. Through this device, one can learn the absorption and desorption process, understand the principles and operation of absorption and desorption, and perform data calculations. It is convenient, fast, and safe for use in teaching and laboratory pilot tests of absorption projects.

[0004] However, in actual use, the absorbent containing dissolved carbon dioxide enters the buffer tank through the absorption tower. If the flow rate of the absorbent is too fast, the liquid level in the buffer tank will rise, which may lead to an overflow risk. Moreover, if too much liquid enters the desorption tower through the desorption pump, the liquid level in the buffer tank will drop, which may lead to insufficient desorption liquid in the later stages, seriously affecting the safety and effectiveness of the experiment. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an absorption and desorption device with a safety instrument system to solve the problems mentioned in the background art.

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

[0007] An absorption and desorption device with a safety instrument system includes a support frame, a water tank fixedly mounted on the top of the support frame, a water inlet pipe extending through the top of the water tank, an absorption pump fixedly mounted on one side of the water tank, and an absorption mechanism fixedly mounted on one side of the absorption pump.

[0008] The absorption mechanism includes a first delivery pipe fixedly installed at the output end of the absorption pump. An absorption tower is installed through one end of the first delivery pipe. A connecting pipe is installed through the bottom end of the absorption tower. A buffer tank is installed through one end of the connecting pipe. Two liquid level sensors are installed inside the buffer tank. A first liquid pipe is installed through one side of the buffer tank. A desorption pump is installed through one side of the first liquid pipe. A second delivery pipe is fixedly installed through one side of the desorption pump. A desorption tower is installed through one end of the second delivery pipe. A drain pipe is installed through the bottom of the desorption tower.

[0009] By adopting the above technical solution, the experimental process can be effectively avoided due to the mismatch between the flow rates of the absorbent and desorbent liquids, stable experimental conditions can be maintained, the normal operation of the equipment can be protected, the absorbent and desorbent pumps can be prevented from running dry or overloaded due to abnormal liquid levels, the service life of the equipment can be extended, and the equipment maintenance cost can be reduced.

[0010] As a further description of the above technical solution: an auxiliary mechanism is provided on one side of the water tank, the auxiliary mechanism includes a feeding pipe that passes through the side of the water tank, a temperature sensor is fixedly installed inside the water tank, a steel cylinder is fixedly installed on the top of the support frame, a pressure reducing valve is fixedly installed at one end of the steel cylinder, and a regulating valve is fixedly installed on one side of the pressure reducing valve.

[0011] By adopting the above technical solutions, a suitable experimental environment is maintained, avoiding excessively high water temperatures that could alter the properties of the absorbent and desorbent solutions. This ensures that the experiment is conducted under appropriate water temperature conditions, guarantees the accuracy of the experimental results, and eliminates potential safety hazards such as burns caused by high-temperature water, thus ensuring the safe and stable operation of the experiment.

[0012] As a further description of the above technical solution: a first flow meter is fixedly installed on one side of the regulating valve, one end of the first flow meter is connected to the feeding pipe, a fan is fixedly installed on the top of the support frame, the fan is installed on one side of the second conveying pipe, an air inlet pipe is fixedly installed at the output end of the fan, a branch pipe is provided through one side of the air inlet pipe, and a second flow meter is fixedly installed on one side of both the air inlet pipe and the branch pipe.

[0013] By adopting the above technical solution, precise control of the feeding flow rate can be achieved, which helps to improve the operating efficiency of the entire device.

[0014] As a further description of the above technical solution: the absorber and desorption tower are fixedly provided with packing layers inside, and exhaust pipes are fixedly provided at the top of the absorber and desorption tower. A liquid distributor is provided through one end of the first conveying pipe and the second conveying pipe. The absorber, buffer tank and desorption tower are all made of transparent fiberglass.

[0015] By adopting the above technical solution, the possibility of the target gas being absorbed by the absorbent is greatly increased, thereby improving the absorption efficiency. This allows the entire absorption process to proceed in a relatively stable and efficient state, further enhancing the absorption effect.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. By setting up an absorption mechanism, compared with existing technologies, the mixed gas and absorbent are fully contacted in the absorption tower under the action of the packing layer. The target component is absorbed by the absorbent, forming a rich absorbent liquid, which flows out from the bottom of the absorption tower into the buffer tank. The buffer tank is equipped with two liquid level sensors, which effectively ensure the safe and stable operation of the experiment. The liquid level in the buffer tank can be monitored in real time. When the liquid level is maintained within a suitable range, it means that the flow rates of the absorbent and desorbent are in a relatively matched state. Under this stable environment, the absorption and desorption processes can proceed at the expected rate and effect, ensuring the accuracy and reliability of experimental data. In addition, it has a safety instrument system, thereby improving the safety and stability of the device.

[0018] 2. By incorporating an auxiliary mechanism, compared to existing technologies, the second delivery pipe carries the liquid inside the buffer tank through the desorption pump into the second delivery pipe, and then through the second delivery pipe into the desorption tower for further desorption. After the water in the tank is circulated, its temperature rises. When the temperature exceeds a certain value, the device automatically shuts off the absorption pump and desorption pump to prevent them from continuously operating in a high-temperature environment. This effectively prevents the absorption pump and desorption pump from being affected by overheating or excessively high solution temperature, thus ensuring optimal absorption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0021] Figure 3 This is a schematic diagram of the absorption mechanism of this utility model.

[0022] Figure 4 This is a schematic diagram of the overall rear cross-sectional structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the auxiliary mechanism structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the absorption tower of this utility model.

[0025] The attached diagram is labeled as follows: 1. Support frame; 2. Water tank; 3. Absorption pump; 4. First delivery pipe; 5. Absorption tower; 6. Connecting pipe; 7. Buffer tank; 8. Liquid level sensor; 9. Desorption pump; 10. Second delivery pipe; 11. Desorption tower; 12. Feed pipe; 13. Temperature sensor; 14. Gas cylinder; 15. Regulating valve; 16. First flow meter; 17. Fan; 18. Air inlet pipe; 19. Air branch pipe; 20. Second flow meter; 21. Packing layer; 22. Exhaust pipe; 23. Liquid distributor. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] like Figure 1-6 As shown in the figure, this application discloses an absorption and desorption device with a safety instrument system, including a support frame 1, a water tank 2 fixedly installed on the top of the support frame 1, an absorption pump 3 fixedly installed on one side of the water tank 2, and an absorption mechanism fixedly installed on one side of the absorption pump 3.

[0029] The absorption mechanism includes a first conveying pipe 4 fixedly installed at the output end of the absorption pump 3. One end of the first conveying pipe 4 is connected to an absorption tower 5. The bottom end of the absorption tower 5 is connected to a connecting pipe 6. One end of the connecting pipe 6 is connected to a buffer tank 7. Two liquid level sensors 8 are installed inside the buffer tank 7. A desorption pump 9 is installed on one side of the buffer tank 7. A second conveying pipe 10 is fixedly installed on one side of the desorption pump 9. One end of the second conveying pipe (10) is connected to a desorption tower 11. A drain pipe is installed at the bottom of the desorption tower 11. An auxiliary mechanism is installed on one side of the water tank 2. The auxiliary mechanism includes a feeding device installed on one side of the water tank 2. A temperature sensor 13 is fixedly installed inside the water tank 2 and the support frame 1. A steel cylinder 14 is fixedly installed on the top of the support frame 1. A pressure reducing valve is fixedly installed at one end of the steel cylinder 14. A regulating valve 15 is fixedly installed on one side of the pressure reducing valve. A first flow meter 16 is fixedly installed on one side of the regulating valve 15. One end of the first flow meter 16 is connected to the feeding pipe 12. A blower 17 is fixedly installed on the top of the support frame 1. The blower 17 is located on one side of the second conveying pipe 10. An air inlet pipe 18 is fixedly installed at the output end of the blower 17. A branch pipe 19 is installed through one side of the air inlet pipe 18. A second flow meter 20 is fixedly installed on one side of both the air inlet pipe 18 and the branch pipe 19.

[0030] As can be seen, in the above technical solution, the mixed gas to be absorbed enters the absorption tower 5 through the branch pipe 19, and the absorbent enters the absorption tower 5 through the first conveying pipe 4. Inside the absorption tower 5, the mixed gas and the absorbent are fully contacted under the action of the packing layer 21. The target component is absorbed by the absorbent, forming a rich absorbent liquid, which flows out from the bottom of the absorption tower 5 into the buffer tank 7. The buffer tank 7 is internally equipped with two liquid level sensors 8 to indicate high and low liquid levels. Due to the mismatch in flow rates between the absorbent and desorbent liquids during the experiment, when the liquid level inside the buffer tank 7 is higher than the high level or lower than the low level, the absorption pump 3 and the desorption pump 9 will shut down, pausing the experiment and ensuring experimental safety. The desorption pump 9 then pumps the liquid from the buffer tank 7 into the desorption tower 11 through the second conveying pipe 10 for further desorption. The water tank 2 is equipped with a temperature sensor 13. When the water in the water tank 2 is circulated, the water temperature will rise. When the water temperature of the temperature sensor 13 exceeds 45°C, the absorption pump 3 and the desorption pump 9 will be automatically shut down, effectively ensuring the safe and stable operation of the experiment.

[0031] Operating procedure: Tap water is introduced into the water tank 2 through the inlet pipe at the top of the water tank 2. Carbon dioxide gas is introduced from the steel cylinder 14 through the pressure reducing valve, then through the regulating valve 15 and the first flow meter 16, and then through the L-shaped pipe on one side of the feeding pipe 12 into the bottom of the absorption tower 5. At the same time, the blower 17 is started to drive air into the air inlet pipe 18 and the air branch pipe 19, which splits the air into two paths. One path enters the bottom of the packing layer 21 inside the absorption tower 5 through the second flow meter 20, so that the air and carbon dioxide gas are mixed and then enter the bottom of the absorption tower 5. The gas passes through the packing layer 21 from bottom to top. At the same time, the absorption pump 3 is started to transport the water in the water tank 2 into the absorption tower 5 through the first delivery pipe 4, and then the gas is in countercurrent contact. The gas reaches the top of the absorption tower 5 and is discharged through the exhaust pipe 22. The absorbed solution flows into the buffer tank 7 through the bottom of the absorption tower 5. The buffer tank 7 is equipped with two liquid level sensors 8 to indicate the high liquid level and the low liquid level. The second delivery pipe 10 carries the liquid inside the buffer tank 7 into the desorption tower 11 through the desorption pump 9. If the flow rates of the absorbent and desorbent liquids do not match during the experiment, and the liquid level inside the buffer tank 7 is higher than the high liquid level or lower than the low liquid level, the absorbent pump 3 and the desorption pump 9 will automatically shut down to ensure experimental safety.

[0032] Another air stream enters the bottom of the desorption tower 11 through the branch pipe 19 and the second flow meter 20, flowing upwards through the packing layer 21 and countercurrently contacting the liquid phase to desorb the carbon dioxide solution. The desorbed liquid then exits from the top of the desorption tower 11 through the exhaust pipe 22. The desorbed liquid circulates back to the water tank 2 through the drain pipe at the bottom of the desorption tower 11. The water tank 2 is equipped with a temperature sensor 13. As the water in the tank 2 circulates, the water temperature rises. When the water temperature is too high, the absorption pump 3 and the desorption pump 9 are automatically shut off, effectively ensuring the safe and stable operation of the experiment. The models of the regulating valve 15, the first flow meter 16, and the temperature sensor 13 are existing technologies and will not be described in detail in this technical solution.

[0033] Example 2

[0034] like Figure 4-6 As shown in the embodiment of this application, an absorption and desorption device with a safety instrument system is disclosed. The absorption tower 5 and the desorption tower 11 are internally fixedly provided with a packing layer 21. The top of the absorption tower 5 and the desorption tower 11 are both fixedly provided with an exhaust pipe 22. One end of the first conveying pipe 4 and the second conveying pipe 10 is provided with a liquid distributor 23. The absorption tower 5, the buffer tank 7 and the desorption tower 11 are all made of transparent fiberglass.

[0035] As can be seen, in the above technical solution, when the liquid is sprayed down through the liquid distributor 23, it is then evenly sprayed into the packing of the absorption tower 5 and the desorption tower 11, and then fully contacts and absorbs the gas in a countercurrent manner, thereby achieving gas purification and absorption liquid regeneration.

[0036] Operating Procedure: When the liquid is delivered to the interior of the absorption tower 5 and desorption tower 11 through the first delivery pipe 4 and the second delivery pipe 10, it is sprayed down through the liquid distributor 23, thus uniformly spraying it into the interior of the absorption tower 5 and desorption tower 11, allowing for full countercurrent contact and absorption, thereby achieving gas purification and absorption liquid regeneration. The absorption tower 5, buffer tank 7, and desorption pump 9 are all made of transparent fiberglass, facilitating observation of the internal structure and operating status. Furthermore, transparent fiberglass possesses advantages such as high strength, corrosion resistance, light weight, and good insulation properties, enabling it to adapt to the complex chemical environment and specific pressure and temperature conditions within the absorption tower 5 and desorption pump 9.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adsorption-desorption device with a safety instrumented system, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly provided with a water tank (2), the top of the water tank (2) is throughly provided with a water inlet pipe, one side of the water tank (2) is fixedly provided with an absorption pump (3), one side of the absorption pump (3) is fixedly provided with an absorption mechanism. The absorption mechanism comprises a first conveying pipe (4) fixedly arranged at the output end of the absorption pump (3), one end of the first conveying pipe (4) is throughly provided with an absorption tower (5), the bottom end of the absorption tower (5) is throughly provided with a connecting pipe (6), one end of the connecting pipe (6) is throughly provided with a buffer tank (7), the inside of the buffer tank (7) is throughly provided with two liquid level sensors (8), one side of the buffer tank (7) is throughly provided with a first liquid pipe, one side of the first liquid pipe is throughly provided with a desorption pump (9), one side of the desorption pump (9) is fixedly provided with a second conveying pipe (10), one end of the second conveying pipe (10) is throughly provided with a desorption tower (11), the bottom of the desorption tower (11) is throughly provided with a drain pipe.

2. The adsorption and desorption apparatus with safety instrumented system according to claim 1, characterized in that: One side of the water tank (2) is provided with an auxiliary mechanism, the auxiliary mechanism comprises a feeding pipe (12) throughly arranged at one side of the water tank (2), the inside of the water tank (2) is fixedly provided with a temperature sensor (13).

3. The adsorption and desorption apparatus with safety instrumented system according to claim 1, characterized in that: The top of the support frame (1) is fixedly provided with a steel cylinder (14), one end of the steel cylinder (14) is fixedly provided with a pressure reducing valve, one side of the pressure reducing valve is fixedly provided with an adjusting valve (15).

4. The adsorption-desorption device with safety instrument system according to claim 3, characterized in that: One side of the adjusting valve (15) is fixedly provided with a first flow meter (16), one end of the first flow meter (16) is communicated with the feeding pipe (12).

5. The adsorption-desorption device with safety instrument system according to claim 1, characterized in that: The top of the support frame (1) is fixedly provided with a fan (17), the fan (17) is arranged at one side of the second conveying pipe (10), the output end of the fan (17) is fixedly provided with an air inlet pipe (18), one side of the air inlet pipe (18) is throughly provided with an air branch pipe (19), one side of the air inlet pipe (18) and the air branch pipe (19) is fixedly provided with a second flow meter (20).

6. The adsorption-desorption device with safety instrument system according to claim 1, characterized in that: The inside of the absorption tower (5) and the desorption tower (11) is fixedly provided with a filler layer (21), the top of the absorption tower (5) and the desorption tower (11) is fixedly provided with an exhaust pipe (22).

7. The adsorption-desorption device with safety instrument system according to claim 1, characterized in that: One end of the first conveying pipe (4) and the second conveying pipe (10) is throughly provided with a liquid distributor (23), the absorption tower (5), the buffer tank (7) and the desorption tower (11) are all made of transparent glass steel material.

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