Closed continuous gas-liquid reaction system

Abstract

The utility model discloses a closed continuous gas-liquid reaction system which comprises a main reaction chamber, and a feeding pipeline is arranged at the top of the main reaction chamber; the bottom of the main reaction chamber is connected with an auxiliary reaction chamber through a first pipeline; a first valve is arranged on the first pipeline; a gas inlet pipeline is arranged at the top of the auxiliary reaction chamber; the bottom of the auxiliary reaction chamber is connected to the top of the main reaction chamber through a second pipeline; a circulating pump is arranged on the second pipeline close to the bottom of the auxiliary reaction chamber; the upward bending position of the second pipeline is connected with a discharging pipeline, and a fourth valve is arranged on the discharging pipeline. The closed continuous gas-liquid reaction system disclosed by the utility model solves the problems that the gas phase escapes to the outside of the system in the gas-liquid reaction process and the material reaction is insufficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas-liquid reaction devices, and in particular relates to a closed continuous gas-liquid reaction system. Background Art

[0002] In industrial production, gas-liquid two-phase reactions are a very important and widespread form of reaction, affecting chemical engineering, chemistry, medicine, energy, and other fields. Conventional gas-liquid reaction devices are primarily open, with a small gas-liquid contact area. If the gas phase contains toxic, harmful, or irritating gases, this can pollute the environment and is inconsistent with current green development concepts.

[0003] Because closed reactors require stirring, the vessel and agitator shaft are sealed using mechanical seals and other sealing methods. However, only the gas needs to be sealed, resulting in poor overall gas-liquid reaction performance and high maintenance costs. Furthermore, due to the openness and poor airtightness, the reaction atmosphere contains a high proportion of dopant gases, which greatly affects the full gas-liquid reaction. Utility Model Content

[0004] The utility model aims to provide a closed continuous gas-liquid reaction system, which solves the problems of gas phase escaping to the outside of the system and insufficient material reaction during the gas-liquid reaction process.

[0005] The technical solution adopted by the utility model is a closed continuous gas-liquid reaction system, comprising a main reaction chamber, wherein a feed pipe is provided on the top of the main reaction chamber; the bottom of the main reaction chamber is connected to an auxiliary reaction chamber via a first pipe, and a first valve is provided on the first pipe; an air intake pipe is provided on the top of the auxiliary reaction chamber, and the bottom of the auxiliary reaction chamber is connected to the top of the main reaction chamber via a second pipe; a circulating pump is provided at a position near the bottom of the auxiliary reaction chamber on the second pipe; a discharge pipe is connected to the position where the second pipe bends upward, and a fourth valve is provided on the discharge pipe.

[0006] The utility model is also characterized in that:

[0007] The bottoms of the main reaction chamber and the auxiliary reaction chamber are both fixedly connected with material dispersing devices.

[0008] The material dispersing device comprises a bracket, one end of which is fixed at the bottom center of the main reaction chamber and the auxiliary reaction chamber; and the other end of the bracket is fixedly connected with a dispersion cover.

[0009] The dispersion cover can be any one of a spherical dome structure, a conical structure, and a baffle structure.

[0010] An air outlet pipe is also provided on the top of the main reaction chamber, and a gas absorption device is connected to the end of the air outlet pipe; a safety valve is also provided on the air outlet pipe.

[0011] A pressure gauge is provided on the top of the main reaction chamber.

[0012] A second valve is provided on the feed pipeline; a third valve is provided on the air intake pipeline.

[0013] The inner diameter of the first pipeline is 1.5 to 2 times the inner diameter of the second pipeline and the feed pipeline.

[0014] The beneficial effects of the utility model are:

[0015] This closed, continuous gas-liquid reaction system maintains a sealed state throughout the entire gas-liquid reaction process. Dispersing materials within the main reaction chamber significantly expands the gas-liquid contact area. No impurities enter the reaction process, ensuring a pure gas phase. Furthermore, the reaction is maintained under a slightly positive pressure, promoting gas-liquid fusion. After the reaction is complete, a safety valve and gas absorption device absorb low-concentration reaction gases, preventing them from entering the atmosphere and causing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the closed continuous gas-liquid reaction system of the utility model;

[0017] In the figure: 1. Main reaction chamber; 2. Auxiliary reaction chamber; 3. First pipeline; 4. First valve; 5. Second pipeline; 6. Circulation pump; 7. Feed pipeline; 8. Second valve; 9. Pressure gauge; 10. Inlet pipeline; 11. Third valve; 12. Dispersion hood; 13. Bracket; 14. Fourth valve; 15. Discharge pipeline; 16. Outlet pipeline; 17. Safety valve; 18. Gas absorption device. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] The utility model is a closed continuous gas-liquid reaction system. Figure 1As shown, the system includes a main reaction chamber 1, with a feed pipe 7 disposed at the top thereof, on which a second valve 8 is mounted. The bottom of the main reaction chamber 1 is connected to an auxiliary reaction chamber 2 via a first pipe 3, on which a first valve 4 is mounted. The top of the auxiliary reaction chamber 2 is provided with an air inlet pipe 10, on which a third valve 11 is mounted. The bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 via a second pipe 5, forming a continuously circulating reaction system. A circulation pump 6 is disposed on the second pipe 5 near the bottom of the auxiliary reaction chamber 2, and is located in a horizontal section of the second pipe 5. A discharge pipe 15 is connected to the second pipe 5 at the point where it bends upward. The discharge pipe 15 is configured as a vertical section, allowing the reacted materials to be discharged by gravity after completion. A fourth valve 14 is disposed on the discharge pipe. During the gas-liquid material reaction, the fourth valve 14 remains closed, allowing the materials to circulate in the main reaction chamber 1 and the auxiliary reaction chamber 2 to ensure the complete reaction.

[0020] A pressure gauge 9 is provided on the top of the main reaction chamber 1. The pressure gauge 9 can monitor the pressure in the main reaction chamber 1 in real time to ensure that the pressure is in a slightly positive state during the entire reaction process.

[0021] The main reaction chamber 1 and the auxiliary reaction chamber 2 are both sealed containers, and through their cooperation, the entire reaction process is kept in a closed state. The inner diameter of the first pipe 3 is 1.5 to 2 times the inner diameter of the second pipe 5, ensuring that no material is retained in the main reaction chamber 1.

[0022] A material dispersion device is fixedly connected to the bottom center of the main reaction chamber 1 and the auxiliary reaction chamber 2. Specifically, the material dispersion device includes a bracket 13, one end of which is fixedly connected to the bottom center of the main reaction chamber 1 and the auxiliary reaction chamber 2, and the other end of the bracket 13 is fixedly connected to a dispersion cover 12. The dispersion cover 12 can have a variety of shapes, including a spherical dome structure, a conical structure, or a baffle structure. The material dispersion device increases the contact area between the gas and liquid reaction materials, providing a stirring function during the reaction process.

[0023] The main function of the main reaction chamber 1 is to disperse the materials and increase the gas-liquid contact area; the main function of the auxiliary reaction chamber 2 is to collect the materials. The purpose of dividing the main reaction chamber 1 and the auxiliary reaction chamber 2 is to obtain a single gas-phase reaction atmosphere and reduce the interference of miscellaneous gases on the reaction.

[0024] An outlet pipe 16 is provided at the top of the main reaction chamber 1, and a gas absorption device 18 is connected to the end of the outlet pipe 16. The gas absorption device 18 can be a container and a chemical substance that can react with the gas phase material is placed in the container to absorb the residual gas phase material, such as an ammonia absorption device.

[0025] The working principle of the closed continuous gas-liquid reaction system of the utility model is as follows:

[0026] The reaction system initially has the first valve 4, second valve 8, third valve 11, and fourth valve 14 all closed. During operation, first open second valve 8, and feed the material into the main reaction chamber 1 through feed pipe 7. The material is then completely filled, and then close second valve 8. The material can be liquid or a uniformly mixed solid-liquid mixture. Sequentially, open first valve 4, start circulation pump 6, and slowly open third valve 11 to an appropriate opening to introduce the reaction gas, until pressure gauge 9 indicates a slightly positive pressure. Close third valve 11. Liquid or solid-liquid material reacts with gaseous material in auxiliary reaction chamber 2. The material dispersion device increases the contact area between the gas and liquid phases, ensuring a more complete reaction. The reacted material re-enters the main reaction chamber 1 through the second pipe 5 and circulation pump 6, continuing the cycle. The extent of the gas-liquid reaction is assessed using the high-precision pressure gauge 9 at the top of the main reaction chamber 1. Once the gas-liquid reaction is complete, shut off circulation pump 6 and third valve 11, open fourth valve 14, and discharge the fully reacted material.

[0027] In actual applications, PLC control can also be set according to working conditions to achieve intelligent control of each valve.

[0028] For production safety and convenience, after the reaction is complete and the material is discharged, the safety valve 17 is opened to promptly release the excess gas phase material into the gas absorption device 18 for absorption of the reaction gas, which can effectively prevent the low concentration of reaction gas from being discharged into the atmosphere and causing environmental pollution.

[0029] This device maintains a sealed gas-liquid reaction throughout the entire process. Dispersing the material within the main reaction chamber significantly expands the gas-liquid contact area. No foreign gases enter the reaction, ensuring a pure gas phase. Furthermore, the reaction is under positive pressure, promoting gas-liquid fusion. Furthermore, low-concentration reaction gases are not released during the entire reaction, preventing air pollution and contributing positively to environmental protection.

[0030] Taking the ammonia leaching process of ammonium molybdate as an example, the gas required for the chemical reaction is ammonia, and the solid is industrial molybdenum oxide. Ammonia consumption during production primarily results from ammonia escape, primarily during the leaching process. On a currently advanced domestic ammonium dimolybdate production line, the unit cost per ton of ammonium dimolybdate is approximately 0.23, while the ammonia content per ton is approximately 0.1. More than half of this ammonia escapes during production, polluting the environment and wasting resources. Furthermore, this escaped ammonia contains a significant amount of air, resulting in an ammonia partial pressure of approximately 1-2%, severely impacting ammonia absorption. This results in a dilute ammonia solution with a concentration below 2%, resulting in a significant amount of untreatable wastewater. When using the closed continuous gas-liquid reaction device of the utility model, even if some ammonia needs to be discharged through the safety valve 17, the ammonia partial pressure can theoretically be 100%. The absorption ratio of ammonia to water at normal temperature and pressure is 1:700. Therefore, by adding a simple ammonia absorption device, high-concentration ammonia water of more than 15% can be produced, which greatly reduces the total amount of ammonia water. The amount of ammonia water is only 1 / 10 to 1 / 15 of the original amount. All of it is reused in production, and pure water and ammonia need to be added. There is no excess wastewater in the whole process.

[0031] Example 1

[0032] This embodiment provides a closed continuous gas-liquid reaction system, such as Figure 1 As shown, it includes a main reaction chamber 1, and a feed pipe 7 is provided on the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 through a first pipe 3, and a first valve 4 is provided on the first pipe 3; an air intake pipe 10 is provided on the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 through a second pipe 5; a circulating pump 6 is provided on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; the second pipe 5 is connected to a discharge pipe 15 at the position where it bends upward, and a fourth valve 14 is provided on the discharge pipe.

[0033] Example 2

[0034] This embodiment provides a closed continuous gas-liquid reaction system, including a main reaction chamber 1, a feed pipe 7 is provided at the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 through a first pipe 3, and a first valve 4 is provided on the first pipe 3; an air intake pipe 10 is provided at the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 through a second pipe 5; a circulation pump 6 is provided on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; a discharge pipe 15 is connected to the position where the second pipe 5 bends upward, and a fourth valve 14 is provided on the discharge pipe.

[0035] A material dispersion device is fixed to the bottom of both the main reaction chamber 1 and the auxiliary reaction chamber 2. This device includes a bracket 13, one end of which is fixed to the center of the bottom of each chamber. A dispersion hood 12 is fixed to the other end of the bracket 13. This hood is a dome-shaped structure.

[0036] Example 3

[0037] This embodiment provides a closed continuous gas-liquid reaction system, such as Figure 1 As shown, it includes a main reaction chamber 1, and a feed pipe 7 is provided on the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 through a first pipe 3, and a first valve 4 is provided on the first pipe 3; an air intake pipe 10 is provided on the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 through a second pipe 5; a circulating pump 6 is provided on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; the second pipe 5 is connected to a discharge pipe 15 at the position where it bends upward, and a fourth valve 14 is provided on the discharge pipe.

[0038] The bottom of the main reaction chamber 1 and the auxiliary reaction chamber 2 are fixed with a material dispersion device. The material dispersion device includes a bracket 13, one end of which is fixed to the center of the bottom of the main reaction chamber 1 and the auxiliary reaction chamber 2; the other end of the bracket 13 is fixed to a dispersion cover 12. The dispersion cover 12 is a conical structure, such as Figure 1 shown.

[0039] Example 4

[0040] This embodiment provides a closed continuous gas-liquid reaction system, such as Figure 1 As shown, it includes a main reaction chamber 1, and a feed pipe 7 is provided on the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 through a first pipe 3, and a first valve 4 is provided on the first pipe 3; an air intake pipe 10 is provided on the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 through a second pipe 5; a circulating pump 6 is provided on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; the second pipe 5 is connected to a discharge pipe 15 at the position where it bends upward, and a fourth valve 14 is provided on the discharge pipe.

[0041] A material dispersion device is fixed to the bottom of both the main reaction chamber 1 and the auxiliary reaction chamber 2. This device includes a bracket 13, one end of which is fixed to the center of the bottom of each chamber. A dispersion hood 12 is fixed to the other end of the bracket 13. The dispersion hood 12 is a baffle structure.

[0042] Example 5

[0043] This embodiment provides a closed continuous gas-liquid reaction system, such as Figure 1As shown, it includes a main reaction chamber 1, and a feed pipe 7 is provided on the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 through a first pipe 3, and a first valve 4 is provided on the first pipe 3; an air intake pipe 10 is provided on the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 through a second pipe 5; a circulating pump 6 is provided on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; the second pipe 5 is connected to a discharge pipe 15 at the position where it bends upward, and a fourth valve 14 is provided on the discharge pipe.

[0044] A material dispersion device is fixed to the bottom of both the main reaction chamber 1 and the auxiliary reaction chamber 2. This device includes a bracket 13, one end of which is fixed to the center of the bottom of each of the main and auxiliary reaction chambers 1 and 2. A dispersion hood 12 is fixed to the other end of the bracket 13. The dispersion hood 12 can have a dome-shaped, conical, or baffled structure.

[0045] An air outlet pipe 16 is further provided on the top of the main reaction chamber 1 , and a gas absorption device 18 is connected to the end of the air outlet pipe 16 ; a safety valve 17 is also provided on the air outlet pipe 16 .

[0046] Example 6

[0047] This embodiment provides a closed continuous gas-liquid reaction system, such as Figure 1 As shown, it includes a main reaction chamber 1, and a feed pipe 7 is provided on the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 through a first pipe 3, and a first valve 4 is provided on the first pipe 3; an air intake pipe 10 is provided on the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 through a second pipe 5; a circulating pump 6 is provided on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; the second pipe 5 is connected to a discharge pipe 15 at the position where it bends upward, and a fourth valve 14 is provided on the discharge pipe.

[0048] A second valve 8 is provided on the feed pipe 7 ; a third valve 11 is provided on the air intake pipe 10 .

[0049] A material dispersion device is fixed to the bottom of both the main reaction chamber 1 and the auxiliary reaction chamber 2. This device includes a bracket 13, one end of which is fixed to the center of the bottom of each of the main and auxiliary reaction chambers 1 and 2. A dispersion hood 12 is fixed to the other end of the bracket 13. The dispersion hood 12 can have a dome-shaped, conical, or baffled structure.

[0050] The top of the main reaction chamber 1 is also provided with an outlet pipe 16, the end of which is connected to a gas absorption device 18; a safety valve 17 is also provided on the outlet pipe 16. A pressure gauge 9 is also provided on the top of the main reaction chamber 1.

[0051] Example 7

[0052] This embodiment provides a closed continuous gas-liquid reaction system, such as Figure 1 As shown, the apparatus comprises a main reaction chamber 1, with a feed pipe 7 disposed at the top of the main reaction chamber 1; the bottom of the main reaction chamber 1 is connected to the auxiliary reaction chamber 2 via a first pipe 3, with a first valve 4 disposed on the first pipe 3; an air inlet pipe 10 disposed at the top of the auxiliary reaction chamber 2, and the bottom of the auxiliary reaction chamber 2 is connected to the top of the main reaction chamber 1 via a second pipe 5; the inner diameter of the first pipe 3 is 1.5 to 2 times the inner diameter of the second pipe 5. A circulation pump 6 is disposed on the second pipe 5 near the bottom of the auxiliary reaction chamber 2; a discharge pipe 15 is connected to the position where the second pipe 5 bends upward, and a fourth valve 14 is disposed on the discharge pipe.

[0053] A second valve 8 is provided on the feed pipe 7 ; a third valve 11 is provided on the air intake pipe 10 .

[0054] A material dispersion device is fixed to the bottom of both the main reaction chamber 1 and the auxiliary reaction chamber 2. This device includes a bracket 13, one end of which is fixed to the center of the bottom of each of the main and auxiliary reaction chambers 1 and 2. A dispersion hood 12 is fixed to the other end of the bracket 13. The dispersion hood 12 can have a dome-shaped, conical, or baffled structure.

[0055] The top of the main reaction chamber 1 is also provided with an outlet pipe 16, the end of which is connected to a gas absorption device 18; a safety valve 17 is also provided on the outlet pipe 16. A pressure gauge 9 is also provided on the top of the main reaction chamber 1.

Claims

1. A closed continuous gas-liquid reaction system, characterized in that: The invention comprises a main reaction chamber (1), wherein a feed pipe (7) is provided at the top of the main reaction chamber (1); the bottom of the main reaction chamber (1) is connected to an auxiliary reaction chamber (2) via a first pipe (3), and a first valve (4) is provided on the first pipe (3); an air inlet pipe (10) is provided at the top of the auxiliary reaction chamber (2), and the bottom of the auxiliary reaction chamber (2) is connected to the top of the main reaction chamber (1) via a second pipe (5); a circulation pump (6) is provided at a position near the bottom of the auxiliary reaction chamber (2) on the second pipe (5); a discharge pipe (15) is connected to the position where the second pipe (5) bends upward, and a fourth valve (14) is provided on the discharge pipe.

2. The closed continuous gas-liquid reaction system according to claim 1, characterized in that: The bottoms of the main reaction chamber (1) and the auxiliary reaction chamber (2) are both fixedly connected with material dispersing devices.

3. The closed continuous gas-liquid reaction system according to claim 2, characterized in that: The material dispersing device comprises a bracket (13), one end of which is fixed at the bottom center of the main reaction chamber (1) and the auxiliary reaction chamber (2); and the other end of the bracket (13) is fixedly connected to a dispersion cover (12).

4. The closed continuous gas-liquid reaction system according to claim 3, characterized in that: The dispersion cover (12) is any one of a spherical dome structure, a conical structure, and a baffle structure.

5. The closed continuous gas-liquid reaction system according to claim 1 or 4, characterized in that: An air outlet pipe (16) is also provided on the top of the main reaction chamber (1), and a gas absorption device (18) is connected to the end of the air outlet pipe (16); a safety valve (17) is also provided on the air outlet pipe (16).

6. The closed continuous gas-liquid reaction system according to claim 1, characterized in that: A pressure gauge (9) is provided on the top of the main reaction chamber (1).

7. The closed continuous gas-liquid reaction system according to claim 1, characterized in that: The feed pipe (7) is provided with a second valve (8); the air intake pipe (10) is provided with a third valve (11).

8. The closed continuous gas-liquid reaction system according to claim 1, characterized in that: The inner diameter of the first pipe (3) is 1.5 to 2 times the inner diameter of the second pipe (5).

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