A gas-liquid distributor
By setting axially spaced exhaust holes and a helical blade drive structure in the gas-liquid distributor, the problem of uneven mixing of the gas-solid-liquid three phases is solved, better mixing of gas and liquid phase fluids is achieved, and the efficiency of the reactor is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU WENLAN GUOCHUANG TECHNOLOGY CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-02
AI Technical Summary
Existing gas-liquid distributors are unable to achieve uniform mixing of the gas, solid, and liquid phases in a three-phase fluidized bed reactor, which affects reaction efficiency.
A gas-liquid distributor was designed. By setting exhaust holes spaced along the axis on the fourth tube and driving the third and fourth tubes to rotate with helical blades, the gas phase fluid is uniformly distributed and mixed with the liquid phase fluid.
It improves the mixing uniformity of the gas-liquid distributor, enhances the mixing effect of gaseous and liquid fluids, and improves the overall efficiency of the reactor.
Smart Images
Figure CN224308171U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of petrochemical equipment, and specifically relates to a gas-liquid distributor. Background Technology
[0002] Since the late 1990s, countries around the world have successively begun research on technologies for refining fuel oil from biomass tar, among which fluidized bed hydrocracking is considered one of the most promising methods. In a three-phase fluidized bed reactor, the gas-liquid distributor is a crucial internal component ensuring the uniform distribution of gas within the bed, and the mixing uniformity of the gas-solid-liquid three phases is a critical performance characteristic of the gas-liquid distributor during operation. Therefore, improving the mixing uniformity of the gas-liquid distributor is a pressing technical problem that needs to be solved in this field. Utility Model Content
[0003] In view of the above problems, this application provides a gas-liquid distributor that can improve mixing uniformity.
[0004] This application provides a gas-liquid distributor, which includes a first tube, a second tube, a third tube, an end cap, and a fourth tube. The first tube is used for the passage of liquid fluid. The second tube is sleeved on the outside of the first tube, and the inner circumference of the second tube and the outer circumference of the first tube form a gas flow channel for the passage of gas fluid. The third tube is disposed above the first tube, with one end of the third tube located inside the second tube and communicating with one end of the first tube. The other end of the third tube away from the first tube is provided with an opening for the mixed fluid to flow out. The end cap is sleeved on the outside of the third tube and seals one end of the second tube. The fourth tube is disposed inside the third tube and extends radially along the third tube. The two ends of the fourth tube are respectively disposed on the outer circumference of the third tube to communicate with the gas flow channel. The outer circumference of the fourth tube is provided with exhaust holes for the gas fluid to enter the third tube. The exhaust holes are multiple holes spaced apart along the axis of the fourth tube.
[0005] In the above technical solution, by setting multiple exhaust holes spaced apart along the axis of the fourth pipe, the gaseous fluid can enter the third pipe more evenly through the exhaust holes after entering the fourth pipe, thus enabling better mixing of the gaseous fluid and liquid fluid. This improves the mixing uniformity of the gas-liquid distributor.
[0006] In some embodiments, the gas-liquid distributor of the fourth tube further includes a driving member, the third tube is rotatably disposed on the first tube, and the driving member is used to drive the third tube and the fourth tube to rotate about the axis of the third tube.
[0007] In the above technical solution, the third and fourth tubes are driven to rotate around the axis of the third tube by the driving component, so as to change the position of the exhaust port in the third tube. This allows the gaseous fluid to enter the third tube more evenly through the exhaust port after entering the fourth tube, so that the gaseous fluid can be better mixed with the liquid fluid.
[0008] In some embodiments, the driving element is a helical blade disposed within the third tube, through which fluid passes to cause the helical blade to drive the third tube and the fourth tube to rotate.
[0009] In the above technical solution, the driving component is a helical blade disposed within the third tube. Fluid passes through the helical blade, causing it to drive the third and fourth tubes to rotate. Therefore, no additional power is required to rotate the driving component, resulting in a simple and easy-to-implement structure.
[0010] In some embodiments, the exhaust port is located on the side of the fourth tube facing the first tube, and the spiral blade is located on the side of the fourth tube away from the first tube.
[0011] In the above technical solution, by setting the exhaust port on the side of the fourth pipe facing the first pipe and setting the spiral blade on the side of the fourth pipe away from the first pipe, the gaseous fluid enters the third pipe through the exhaust port and then passes through the spiral blade. As a result, the gaseous fluid is driven to rotate and is driven by the spiral blade to form turbulence, thereby enabling the gaseous fluid to mix better with the liquid fluid.
[0012] In some embodiments, the third tube includes a first segment, a second segment, and a third segment arranged sequentially along its axis, the first segment being in communication with the first tube, the radial dimension of the first segment being greater than the radial dimension of the third segment, and the helical blade being disposed in the third segment.
[0013] In the above technical solution, because the radial dimension of the first segment is larger than that of the third segment, the flow velocity increases as the fluid flows from the first segment to the third segment, making it easier for the fluid to drive the spiral blades to rotate.
[0014] In some embodiments, the radial dimension of the second segment gradually decreases from the direction of the first segment toward the third segment.
[0015] In the above technical solution, the radial dimension of the second segment gradually decreases, thereby allowing the fluid velocity to gradually increase in the second segment. The structure is simple and easy to implement.
[0016] In some embodiments, the gas-liquid distributor further includes a connecting rod, one end of which is disposed on the outer periphery of the first tube and the other end of which is disposed on the inner periphery of the second tube.
[0017] In the above technical solution, the first tube and the second tube are connected by a connecting rod so that the first tube and the second tube are relatively fixed, thereby facilitating the restriction of the position of the second tube in its axial direction by the first tube and the end cap.
[0018] In some embodiments, the gas-liquid distributor further includes a check valve movably disposed above the opening along the direction of gravity. The check valve has a first position and a second position and is configured to: open the opening in the first position and close the opening in the second position; when fluid flows out of the opening, the fluid drives the check valve to move toward the first position; and when the fluid stops flowing, the check valve moves toward the second position under its own gravity.
[0019] In the above technical solution, the flow of fluid back to the third pipe is restricted by the check valve when no fluid flows out of the opening, and the structure is simple and easy to implement.
[0020] In some embodiments, the check valve is spherical.
[0021] In the above technical solution, the anti-reverse component is spherical to reduce the risk of the anti-reverse component not fitting tightly with the edge of the opening due to rotation of the anti-reverse component.
[0022] In some embodiments, the gas-liquid distributor further includes a limiting member disposed on the side of the end cap away from the first tube body, and used to limit the movement of the check valve in a first direction, the first direction being perpendicular to the direction of gravity.
[0023] In the above technical solution, the reliability of the anti-reverse component is improved by setting a limiting component to restrict the movement of the anti-reverse component along the first direction. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 A cross-sectional view of a gas-liquid distributor provided in an embodiment of this utility model;
[0026] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0027] Figure 3A partial cross-sectional view of the first tube and the second tube provided for an embodiment of this utility model. Detailed Implementation
[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0029] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0032] Since the late 1990s, countries around the world have successively begun research on technologies for refining fuel oil from biomass tar, among which fluidized bed hydrocracking is considered one of the most promising methods. In a three-phase fluidized bed reactor, the gas-liquid distributor is a crucial internal component ensuring the uniform distribution of gas within the bed, and the mixing uniformity of the gas-solid-liquid three phases is a critical performance characteristic of the gas-liquid distributor during operation. Therefore, improving the mixing uniformity of the gas-liquid distributor is a pressing technical problem that needs to be solved in this field.
[0033] To solve the above technical problems, refer to Figures 1-3This application provides a gas-liquid distributor, which includes a first tube 10, a second tube 20, a third tube 30, an end cap 50, and a fourth tube 40. The first tube 10 is used for the passage of liquid fluid. The second tube 20 is sleeved outside the first tube 10, and a gas flow channel 201 for the passage of gas fluid is formed between the inner circumference of the second tube 20 and the outer circumference of the first tube 10. The third tube 30 is disposed above the first tube 10, with one end of the third tube 30 located inside the second tube 20 and communicating with one end of the first tube 10. The other end of the tube body 30, away from the first tube body 10, is provided with an opening for the mixed fluid to flow out; the end cap 50 is fitted over the third tube body 30 and seals one end of the second tube body 20; the fourth tube body 40 is disposed inside the third tube body 30 and extends radially along the third tube body 30, with both ends of the fourth tube body 40 respectively disposed on the outer periphery of the third tube body 30 to communicate with the gas phase flow channel 201, and the outer periphery of the fourth tube body 40 is provided with an exhaust port 401 for the gas phase fluid to enter the third tube body 30, and the exhaust port 401 is a plurality of such ports spaced apart along the axis of the fourth tube body 40.
[0034] In some embodiments, there are multiple fourth tubes 40, the middle parts of the multiple fourth tubes 40 are interconnected, and both ends of the multiple fourth tubes 40 are disposed on the outer periphery of the third tube 30 and are spaced apart along the circumference of the third tube 30.
[0035] Understandably, the axes of the first tube 10 and the second tube 20 are both parallel to the direction of gravity Z, and the end cap 50 seals the end of the second tube 20 away from the ground.
[0036] In this technical solution, by setting multiple exhaust holes 401 at intervals along the axis of the fourth tube 40, the gaseous fluid entering the fourth tube 40 can enter the third tube 30 more uniformly through the exhaust holes 401, thereby enabling better mixing of the gaseous fluid with the liquid fluid. This improves the mixing uniformity of the gas-liquid distributor.
[0037] According to some embodiments of this application, the fourth tube 40 gas-liquid distributor further includes a driving member, the third tube 30 is rotatably disposed on the first tube 10, and the driving member is used to drive the third tube 30 and the fourth tube 40 to rotate about the axis of the third tube 30.
[0038] In this technical solution, the third tube 30 and the fourth tube 40 are driven to rotate around the axis of the third tube 30 by a driving component, so as to change the position of the exhaust port 401 in the third tube 30. This allows the gaseous fluid to enter the third tube 30 more evenly through the exhaust port 401 after entering the fourth tube 40, so that the gaseous fluid can be better mixed with the liquid fluid.
[0039] According to some embodiments of this application, the driving component is a spiral blade 60 disposed in the third tube 30, and the fluid passes through the spiral blade 60 so that the spiral blade 60 drives the third tube 30 and the fourth tube 40 to rotate.
[0040] For example, the outer periphery of the helical blade 60 is disposed on the inner periphery of the third tube 30 so that when the fluid passes through the helical blade 60, it can drive the third tube 30 to rotate while driving the helical blade 60 to rotate.
[0041] In this technical solution, the driving component is a helical blade 60 disposed inside the third tube 30. Fluid passes through the helical blade 60, causing the helical blade 60 to drive the third tube 30 and the fourth tube 40 to rotate. Therefore, no additional power is required to rotate the driving component, and the structure is simple and easy to implement.
[0042] According to some embodiments of this application, the exhaust port 401 is located on the side of the fourth tube 40 facing the first tube 10, and the spiral blade 60 is located on the side of the fourth tube 40 away from the first tube 10.
[0043] In this technical solution, by setting the exhaust port 401 on the side of the fourth pipe body 40 facing the first pipe body 10, and setting the spiral blade 60 on the side of the fourth pipe body 40 away from the first pipe body 10, the gaseous fluid enters the third pipe body 30 through the exhaust port 401 and then passes through the spiral blade 60. As a result, the gaseous fluid is driven to rotate by the spiral blade 60 and is driven by the spiral blade 60 to form turbulence, thereby enabling the gaseous fluid to mix better with the liquid fluid.
[0044] According to some embodiments of this application, the third tube 30 includes a first segment 301, a second segment 302 and a third segment 303 arranged sequentially along its axis. The first segment 301 is connected to the first tube 10. The radial dimension of the first segment 301 is greater than the radial dimension of the third segment 303. The helical blade 60 is disposed in the third segment 303.
[0045] In this technical solution, because the radial dimension of the first segment 301 is larger than that of the third segment 303, the flow velocity increases as the fluid flows from the first segment 301 to the third segment 303, making it easier for the fluid to drive the spiral blade 60 to rotate.
[0046] According to some embodiments of this application, the radial dimension of the second segment 302 gradually decreases from the direction of the first segment 301 to the third segment 303.
[0047] In this technical solution, the radial dimension of the second segment 302 gradually decreases, thereby allowing the fluid velocity to gradually increase in the second segment 302. The structure is simple and easy to implement.
[0048] According to some embodiments of this application, the gas-liquid distributor further includes a connecting rod 70, one end of which is disposed on the outer peripheral side of the first tube 10, and the other end is disposed on the inner peripheral side of the second tube 20.
[0049] In this technical solution, the first tube 10 and the second tube 20 are connected by the connecting rod 70 so that the first tube 10 and the second tube 20 are relatively fixed, thereby facilitating the restriction of the position of the second tube 20 in its axial direction by the first tube 10 and the end cap 50.
[0050] For example, the connecting rods 70 are a plurality of rods spaced apart around the outer periphery of the first tube 10.
[0051] According to some embodiments of this application, the gas-liquid distributor further includes a check valve 80, which is movably disposed above the opening along the gravity direction Z. The check valve 80 has a first position and a second position. The check valve 80 is configured to: open the opening in the first position and close the opening in the second position; when fluid flows out of the opening, the fluid drives the check valve 80 to move to the first position; when the fluid stops flowing, the check valve 80 moves to the second position under its own gravity.
[0052] In this technical solution, the flow of fluid back to the third pipe body 30 is restricted by the check valve 80 when no fluid flows out of the opening, which is simple in structure and easy to implement.
[0053] According to some embodiments of this application, the check valve 80 is spherical.
[0054] In this technical solution, the anti-reverse component 80 is spherical to reduce the risk that the anti-reverse component 80 will not fit tightly with the edge of the opening due to rotation.
[0055] According to some embodiments of this application, the gas-liquid distributor further includes a limiting member 90, which is disposed on the side of the end cap 50 away from the first tube 10 and is used to limit the movement of the anti-reverse member 80 in a first direction, which is perpendicular to the gravity direction Z.
[0056] Understandably, the limiting member 90 can be a tube with a sealed end and an open end, the open end communicating with the opening, and the check valve 80 located inside the limiting member 90. The periphery of the limiting member 90 has a drain hole for fluid to flow out of its interior. It should be noted that the check valve 80 cannot leave the interior of the limiting member 90 through the drain hole.
[0057] The first direction is any horizontal direction perpendicular to the direction of gravity Z. For example, the first direction can be the radial direction of the third tube 30.
[0058] In this technical solution, the reliability of the anti-reverse component 80 is improved by setting a limiting component 90 to restrict the movement of the anti-reverse component 80 along the first direction.
[0059] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0060] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A gas-liquid distributor, characterized in that, include: The first tube body, the interior of which is used to allow liquid phase fluid to pass through; The second tube is sleeved on the first tube, and the inner circumference of the second tube and the outer circumference of the first tube form a gas flow channel for the gas phase fluid to pass through. A third tube is disposed above the first tube. One end of the third tube is located inside the second tube and is connected to one end of the first tube. The other end of the third tube away from the first tube is provided with an opening for the mixed fluid to flow out. An end cap is fitted over the third tube and seals one end of the second tube. A fourth tube is disposed within the third tube and extends radially along the third tube. Both ends of the fourth tube are respectively disposed on the outer periphery of the third tube to communicate with the gas phase flow channel. The outer periphery of the fourth tube is provided with exhaust holes for gas phase fluid to enter the third tube. The exhaust holes are multiple holes spaced apart along the axis of the fourth tube.
2. A gas-liquid distributor according to claim 1, characterized in that, The gas-liquid distributor further includes: A driving element is provided, wherein the third tube is rotatably disposed on the first tube, and the driving element is used to drive the third tube and the fourth tube to rotate about the axis of the third tube.
3. A gas-liquid distributor according to claim 2, characterized in that, The driving component is a spiral blade disposed in the third tube. Fluid passes through the spiral blade so that the spiral blade drives the third tube and the fourth tube to rotate.
4. A gas-liquid distributor according to claim 3, characterized in that, The exhaust port is located on the side of the fourth tube facing the first tube, and the spiral blade is located on the side of the fourth tube away from the first tube.
5. A gas-liquid distributor according to claim 3, characterized in that, The third tube body includes a first section, a second section, and a third section arranged sequentially along its axis. The first section is connected to the first tube body, and the radial dimension of the first section is greater than that of the third section. The helical blade is disposed in the third section.
6. A gas-liquid distributor according to claim 5, characterized in that, The radial dimension of the second segment gradually decreases from the direction of the first segment toward the third segment.
7. A gas-liquid distributor according to claim 1, characterized in that, The gas-liquid distributor further includes: The connecting rod has one end located on the outer periphery of the first tube and the other end located on the inner periphery of the second tube.
8. A gas-liquid distributor according to claim 1, characterized in that, The gas-liquid distributor further includes: A check valve is movably disposed above the opening along the direction of gravity. The check valve has a first position and a second position. The check valve is configured to: open the opening in the first position and close the opening in the second position. When the fluid flows out of the opening, the fluid drives the check valve to move toward the first position; When the fluid stops flowing, the check valve moves to the second position under its own gravity.
9. A gas-liquid distributor according to claim 8, characterized in that, The check valve is spherical.
10. A gas-liquid distributor according to claim 9, characterized in that, The gas-liquid distributor further includes: A limiting member is disposed on the side of the end cap away from the first tube body and is used to restrict the movement of the anti-reverse member in a first direction, the first direction being perpendicular to the direction of gravity.