Hydrogen chloride gas-liquid dehydration separation device

Abstract

The utility model provides a hydrogen chloride gas-liquid dehydration separation device which comprises an inlet section, a contraction section, a throat section, a diffusion section and a liquid storage bin which are sequentially connected through flanges from top to bottom, the inlet section comprises a gas inlet formed in the top of the inlet section and a liquid inlet formed in the right side of the top of the inlet section, and the included angle between the gas inlet and the liquid inlet is 45 degrees; the contraction section comprises a first contraction section positioned at the lower part of the inlet section, a second contraction section connected with the throat section, and a rectifying tube arranged between the first contraction section and the second contraction section; an air outlet positioned at the upper part of the liquid storage bin and a waste liquid opening positioned at the lower part of the liquid storage bin are formed in the side wall of the liquid storage bin; according to the scheme, the angles of the gas inlet and the liquid inlet of the inlet section are optimized, uniform gas-liquid mixing is facilitated, a rectifying tube is additionally arranged, turbulence is eliminated, a gas-liquid mixture flows stably, the structure of the contraction section is adjusted, the gas-liquid separation effect is effectively improved, and the problem that the separation effect of a traditional Venturi separator is not ideal is solved; and the method has relatively good practicability and innovativeness.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen chloride gas-liquid separation technology, and specifically to a hydrogen chloride gas-liquid dehydration and separation device. Background Technology

[0002] Hydrogen chloride has a wide range of applications in the chemical industry. This reactive gas can be used to convert low-energy raw materials into reactive intermediates for downstream production. It is used in the solar energy and semiconductor industries to produce organosilicon, fumed silica, and polycrystalline silicon. In organosilicon synthesis reactions, the concentration and purity of hydrogen chloride directly affect the reaction rate and product selectivity. However, during the production, use, and transportation of hydrogen chloride, a certain amount of hydrogen chloride gas-liquid mixture is usually present. The separation of this mixture is a crucial step in organosilicon production; effective separation allows for precise control of the reaction conditions in organosilicon synthesis.

[0003] Chinese patent CN214635235U, entitled "A Device for Reducing HCl in Acid Regeneration Tail Gas," discloses a Venturi separator and a liquid separator. The Venturi liquid separator includes an inlet connection, a Venturi structure, and a support connection. The inlet connection directly connects to the constriction section of the Venturi structure, causing a sudden and sharp increase in airflow velocity, which is detrimental to the complete separation of the liquid. The constriction section is then directly connected to the throat section, failing to effectively form a separation zone, making it difficult to separate droplets and reducing separation efficiency. This connection method is ineffective for separating gas-liquid mixtures. If the spray nozzle flow rate increases, the overall movement speed of the gas-liquid mixture is faster, making it easier to form eddies and mixing phenomena, further complicating separation. Summary of the Invention

[0004] This utility model provides a hydrogen chloride gas-liquid dehydration separation device to solve the problem that the separation effect of gas-liquid mixture is not ideal due to the tight structure of the Venturi separator in the gas-liquid dehydration separation device.

[0005] To address the aforementioned problems, this utility model provides a hydrogen chloride gas-liquid dehydration and separation device, comprising: an inlet section, a contraction section, a throat section, and a diffusion section connected sequentially from top to bottom via flanges; the inlet section is configured as a cylindrical pipe cover, including an air inlet located at the top of the inlet section and a liquid inlet located on the top right side of the inlet section at an angle of 45° to the air inlet; the contraction section includes a first contraction section located below the inlet section and forming an inverted trapezoid, a second contraction section connected to the throat section and forming an inverted trapezoid, and a rectifier pipe located between the first and second contraction sections; the diffusion section is configured as a long trapezoidal pipe, a liquid storage tank located below and connected to the diffusion section, an air outlet located on the upper side wall of the liquid storage tank, a waste liquid outlet located on the lower side wall of the liquid storage tank, and a base located at the bottom of the liquid storage tank;

[0006] The above scheme optimizes the angles of the air inlet and liquid inlet in the inlet section, which helps to mix the gas and liquid evenly. The addition of a rectifier tube eliminates turbulence, making the gas-liquid mixture flow smoothly. The adjustment of the structure of the contraction section effectively improves the gas-liquid separation effect and solves the problem of unsatisfactory separation effect of traditional Venturi separators. It has good practicality and innovation.

[0007] According to one embodiment of the present invention, the above-mentioned gas-liquid dehydration and separation device further includes: a spray nozzle located in the inlet section and below the gas inlet, which is connected to the liquid inlet through a liquid inlet pipe. Through the above scheme, the gas-liquid mixture can be initially dispersed and cooled, improving the efficiency of the subsequent separation process. At the same time, it helps to control the temperature inside the device and ensure the stable dehydration of hydrogen chloride gas.

[0008] According to one embodiment of the present invention, the above-mentioned gas-liquid dehydration and separation device further includes a rectifier installed in the middle of the rectifier tube. Through the above solution, the flow stability of the fluid is improved, turbulence and vortices are reduced, the efficiency of the subsequent separation process is improved, energy loss is reduced, and the stable operation of the device is ensured.

[0009] According to one embodiment of the present invention, the rectifier has an inner layer and an outer layer that wraps around the inner layer.

[0010] According to one embodiment of the present invention, the inner layer has a honeycomb structure, which is composed of a plurality of hexagonal channels.

[0011] According to one embodiment of the present invention, the outer layer is provided with a plurality of hexagonal channels surrounding it. This structure can effectively guide fluid flow, reduce turbulence and vortices, improve fluid uniformity, thereby improving separation efficiency, reducing energy loss, and ensuring stable operation of the device.

[0012] According to one embodiment of the present invention, the above-mentioned gas-liquid dehydration separation device further includes a circulation pipe connected to the waste liquid outlet and the circulation liquid inlet and installed on the outside of the dehydration separation device, a circulation pump and a condenser installed on the circulation pipe. Through the above scheme, the waste liquid is recycled and reused, reducing operating costs. At the same time, the efficient operation of the dehydration separation device and the long-term stability of the equipment are ensured by cooling the circulating liquid, which meets the requirements of environmental protection and energy conservation.

[0013] According to one embodiment of the present invention, a maintenance window is provided on the side wall of the entrance section.

[0014] According to one embodiment of the present invention, four supports are evenly provided on the sidewall of the first contraction section. The support helps to absorb and reduce vibration during equipment operation, provides support for the equipment, and maintains the stability of the separation process.

[0015] The technical advantages of this application are as follows:

[0016] 1. The hydrogen chloride gas-liquid dehydration and separation device provided in this application optimizes the angle of the gas inlet and liquid inlet in the inlet section, which helps to achieve uniform gas-liquid mixing. The addition of a rectifier tube eliminates turbulence, making the gas-liquid mixture flow smoothly. The adjustment of the structure of the contraction section effectively improves the gas-liquid separation effect and solves the problem of unsatisfactory separation effect of traditional Venturi separators.

[0017] 2. The installation of the circulation pipeline enables the recycling and reuse of waste liquid, reducing operating costs. At the same time, cooling the circulating liquid ensures the efficient operation of the dehydration and separation device and the long-term stability of the equipment, meeting the requirements of environmental protection and energy conservation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a hydrogen chloride gas-liquid dehydration and separation device provided by this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the hydrogen chloride gas-liquid dehydration and separation device provided by this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the hydrogen chloride gas-liquid dehydration and separation device provided by this utility model.

[0021] Figure 4 This is a schematic diagram of the rectifier structure of a hydrogen chloride gas-liquid dehydration and separation device provided by this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Maintenance window; 2. Air inlet; 3. Liquid inlet; 4. Circulating liquid inlet; 5. Inlet section; 6. Support; 7. First contraction section; 8. Contraction section; 9. Rectifier tube; 10. Second contraction section; 11. Throat section; 12. Diffusion section; 13. Liquid storage tank; 14. Air outlet; 15. Waste liquid outlet; 16. Liquid inlet pipe; 17. Spray nozzle; 18. Rectifier; 1801. Inner layer; 1802. Outer layer; 19. Circulating pump; 20. Condenser; 21. Circulating pipe; 22. Base. Detailed Implementation

[0024] The following will be combined with the appendix Figures 1-4 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to illustrate the technical solution of this application more clearly, and are therefore only examples and should not be used to limit the scope of protection of this application.

[0025] Example 1

[0026] Reference Figure 1This utility model provides a hydrogen chloride gas-liquid dehydration and separation device, comprising: an inlet section 5, a contraction section 8, a throat section 11, and a diffuser section 12 connected sequentially from top to bottom via flanges. The inlet section 5 is configured as a cylindrical pipe cover, including an air inlet 2 located at the top of the inlet section 5 and a liquid inlet 3 located on the top right side of the inlet section 5 at an angle of 45° to the air inlet 2. The contraction section 8 includes a first contraction section 7 located at the lower part of the inlet section 5 in an inverted trapezoidal shape, a second contraction section 10 connected to the throat section 11 in an inverted trapezoidal shape, and a diffuser section 12 located at the lower part of the inlet section 5 in an inverted trapezoidal shape. The rectifier pipe 9 between section 7 and the second contraction section 10; four supports 6 are evenly provided on the side wall of the first contraction section 7. The support 6 helps to absorb and reduce the vibration during equipment operation, supports the equipment, and maintains the stability of the separation process; the diffusion section 12 is a long trapezoidal pipe; the liquid storage tank 13 is located below the diffusion section 12 and connected to the diffusion section 12; the air outlet 14 is located on the upper side wall of the liquid storage tank 13; the waste liquid outlet 15 is located on the lower side wall of the liquid storage tank 13; and the base 22 is located at the bottom of the liquid storage tank 13.

[0027] The hydrogen chloride gas-liquid mixture enters the inlet section 5 through the inlet port 2, and then enters the first contraction section 7 of the contraction section 8. The flow rate increases and the gas and liquid begin to separate. After passing through the rectifier pipe 9, the fluid is evenly distributed and enters the second contraction section 10. The flow rate increases again. After passing through the throat section 11, the gas-liquid separation is more thorough. The gas enters the top of the liquid storage tank 13 and is discharged through the outlet port 14. The liquid is deposited at the bottom of the liquid storage tank 13 and is discharged through the waste liquid outlet 15.

[0028] The above scheme optimizes the angles of the air inlet 2 and liquid inlet 3 of the inlet section 5, which helps to mix the gas and liquid evenly. The addition of the rectifier tube 9 eliminates turbulence and makes the gas-liquid mixture flow smoothly. The structure of the contraction section 8 is adjusted, which effectively improves the gas-liquid separation effect and solves the problem of unsatisfactory separation effect of traditional Venturi separators. It has good practicality and innovation.

[0029] Example 2

[0030] Reference Figure 2 Based on the above embodiment 1, this application also provides another embodiment of the hydrogen chloride gas-liquid separation device. The above gas-liquid dehydration separation device further includes: a spray port 17 connected to the liquid inlet 3 via a liquid inlet pipe 16, located in the inlet section 5 and below the gas inlet 2; a rectifier 18 installed in the middle of the rectifier pipe 9; the rectifier 18 has an inner layer 1801 and an outer layer 1802 wrapped around the inner layer 1801; the inner layer 1801 has a honeycomb structure and is composed of a number of hexagonal channels; the outer layer 1802 has a number of hexagonal channels surrounding it.

[0031] The spray liquid is liquid water, which enters the inlet pipe 16 through the inlet 3 and is sprayed through the spray nozzle 17, so that the liquid water and hydrogen chloride gas-liquid mixture are fully mixed and the gas-liquid specific gravity reaches about 1.0. At this time, the gas-liquid separation effect after passing through the throat section 11 is optimal. Through the above scheme, this structure can effectively guide the fluid flow, reduce turbulence and vortices, improve the flow stability of the fluid, reduce turbulence and vortices, improve the efficiency of subsequent separation processes, reduce energy loss, and ensure the stable operation of the device.

[0032] Example 3

[0033] Reference Figure 3 Based on Embodiment 1 and Embodiment 2 above, this application also provides another embodiment of a hydrogen chloride gas-liquid separation device, which further includes a circulation pipe 21 connected to the waste liquid inlet 15 and the circulation liquid inlet 4 and installed outside the dehydration separation device, a circulation pump 19 and a condenser 20 provided on the circulation pipe 21, and the separated liquid water is sent back to the dehydration separation device through the circulation pipe 21 by the circulation pump 19. At the same time, the flow rate of the spray nozzle 17 is reduced so that the gas-liquid specific gravity reaches about 1.0. Through the above scheme, the waste liquid is recycled and reused, reducing the operating cost. At the same time, the efficient operation of the dehydration separation device and the long-term stability of the equipment are ensured by cooling the circulating liquid, which meets the requirements of environmental protection and energy saving.

[0034] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A hydrogen chloride gas-liquid dehydration and separation device, comprising: The inlet section (5), constriction section (8), throat section (11), and diffuser section (12) are connected sequentially from top to bottom via flanges. The feature is that... The inlet section (5) is a cylindrical tube cover, including an air inlet (2) at the top of the inlet section (5) and a liquid inlet (3) at the right side of the top of the inlet section (5) with an angle of 45° to the air inlet (2). The contraction section (8) includes a first contraction section (7) in the shape of an inverted trapezoid located at the lower part of the inlet section (5), a second contraction section (10) in the shape of an inverted trapezoid connected to the throat section (11), and a rectifier tube (9) disposed between the first contraction section (7) and the second contraction section (10). The diffusion section (12) is a long trapezoidal pipe, a liquid storage tank (13) is located below the diffusion section (12) and connected to the diffusion section (12), an air outlet (14) is located on the upper part of the side wall of the liquid storage tank (13), a waste liquid outlet (15) is located on the lower part of the side wall of the liquid storage tank (13), and a base (22) is located at the bottom of the liquid storage tank (13).

2. The hydrogen chloride gas-liquid dehydration and separation device according to claim 1, characterized in that, Also includes: A spray nozzle (17) located inside the inlet section (5) and below the air inlet (2) is connected to the liquid inlet (3) via a liquid inlet pipe (16).

3. The hydrogen chloride gas-liquid dehydration and separation device according to claim 1, characterized in that, Also includes: The rectifier (18) is installed inside the rectifier tube (9) and located in the middle of the rectifier tube (9).

4. The hydrogen chloride gas-liquid dehydration and separation device according to claim 3, characterized in that, The rectifier (18) has an inner layer (1801) and an outer layer (1802) that wraps around the inner layer (1801).

5. The hydrogen chloride gas-liquid dehydration and separation device according to claim 4, characterized in that, The inner layer (1801) has a honeycomb structure, consisting of several hexagonal channels.

6. The hydrogen chloride gas-liquid dehydration and separation device according to claim 4, characterized in that, The outer layer (1802) has a number of hexagonal channels that surround it.

7. The hydrogen chloride gas-liquid dehydration and separation device according to claim 1, characterized in that, It also includes a circulation pipe (21) connected to the waste liquid outlet (15) and the circulation liquid inlet (4) respectively and installed on the outside of the dehydration separation device, a circulation pump (19) and a condenser (20) provided on the circulation pipe (21).

8. The hydrogen chloride gas-liquid dehydration and separation device according to claim 1, characterized in that, The side wall of the entrance section (5) is provided with a maintenance window (1).

9. The hydrogen chloride gas-liquid dehydration and separation device according to claim 1, characterized in that, The first contraction section (7) has four supports (6) evenly distributed on its sidewall.

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