Novel liquid distribution device
By introducing buffer tanks, filler buffer devices and secondary buffer devices into the liquid distribution device, the problem of poor liquid distribution under large flow rates is solved, uniform distribution of liquid and kinetic energy buffering is achieved, and the performance and efficiency of the liquid distributor are improved. .
Patent Information
- Application Number
- CN202420343864.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-26
AI Technical Summary
When the existing liquid distribution device faces high flow conditions, the liquid distribution effect is poor and it is prone to splash or overflow, resulting in the failure of the device and unable to effectively adapt to different flow conditions.
A new type of liquid distribution device is designed, including buffer grooves, filler buffer devices, transition buffer devices and secondary buffer devices. The liquid is realized through components such as saddle rings, transition grooves, distribution boxes, spray holes and liquid barrier plates. Evenly distributed and kinetic energy buffering to reduce spillover.
It improves the uniformity and density of liquid distribution, enhances the performance of the liquid distributor, adapts to large flow conditions, reduces liquid spillage, and improves the liquid mass and heat transfer efficiency in the tower.
Smart Images
Figure CN222196980U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of petrochemical industry, in particular to a novel liquid distribution device. Background Art
[0002] In the field of petrochemicals, tower equipment, reactors (kettles), heat exchangers, storage tanks and pipelines together constitute a set of petrochemical systems. Tower equipment is an important production equipment widely used in chemical, petroleum and other industries. The basic function of tower equipment is to provide gas and liquid phases with opportunities for full contact, so that the mass and heat transfer processes can be carried out quickly and effectively. In this process, the tower internals provide a contact place for mass transfer and heat transfer for gas-liquid phases and liquid-liquid phases. A complete tower equipment is composed of tower internals and tower bodies. The tower internals include devices such as liquid distribution and packing devices. The function of the liquid distribution device is to evenly distribute or redistribute the liquid at the top of the packing or at a certain height, so as to increase the effective surface of mass transfer and heat transfer, improve the contact between phases, and thus improve the efficiency of the tower. In order to maximize the production capacity and efficiency of the packed tower, the technical level and quality of the liquid distribution device directly affect the operation of the entire packed tower and the performance of the packing.
[0003] The current liquid distribution device has a single structure and is not very adaptable to different flow conditions of the liquid in the tower, and the liquid distribution effect needs to be improved. For example, when the liquid flow is large, the liquid directly splashes out of the distribution tank, reducing the liquid distribution effect. And when the flow is large, the liquid directly overflows the distribution tank into the packing layer, causing the distribution device to fail. Utility Model Content
[0004] In view of the above problems, the utility model provides a novel liquid distribution device, which enhances the liquid buffering effect in the distributor, is more conducive to liquid distribution, can adapt to liquid kinetic energy buffering under large flow rates, and achieves improved performance of the liquid distributor.
[0005] A novel liquid distribution device includes a buffer tank, which is a hollow box body, through holes are arranged at the upper and lower ends of the box body, the buffer tank is equipped with a primary buffer device, a distribution box is connected below the buffer tank, and the distribution box is equipped with a secondary buffer device. Through holes are arranged at the bottom of the buffer tank, which are arranged according to the liquid flow conditions in the tower, play a primary distribution role on the liquid, and play a preliminary buffering role on the liquid while meeting the liquid flow rate.
[0006] Preferably, the primary buffer device includes a filler buffer device arranged inside the box body and a transition buffer device arranged outside the box body.
[0007] Preferably, the packing buffer device is a plurality of saddle rings installed in the buffer groove for providing a curved channel for the liquid. The saddle rings form an arc-shaped liquid channel in the buffer groove, which reduces the resistance of the gas passing through the buffer groove and also reduces the radial diffusion coefficient of the liquid when it flows downward, which can effectively diffuse the liquid laterally.
[0008] Preferably, the transition buffer device comprises a gradual transition groove, the transition groove is sleeved on the outside of the buffer groove, a distribution box is connected below the transition groove, a side wall of the distribution box is provided with a liquid guide hole, and the liquid guide hole is located inside the transition groove.
[0009] Preferably, the top of the buffer groove is higher than the top of the transition groove.
[0010] Preferably, the secondary buffer device comprises a distribution groove, a side wall of the distribution groove is provided with a spray hole, and a liquid baffle plate connected to the distribution groove is provided outside the spray hole.
[0011] Preferably, an overflow hole is provided on the side wall of the distribution trough above the spray hole.
[0012] Preferably, a plurality of dispersion teeth are provided at the lower end of the liquid baffle plate. The dispersion teeth are in the shape of an inverted triangle, and buffer and distribute the columnar liquid from the spray hole into a uniform point distribution state.
[0013] Preferably, there is a set gap between the liquid baffle plate and the outer wall of the distribution tank.
[0014] Preferably, the height of the liquid baffle plate is higher than the height of the spray hole and lower than the height of the overflow hole.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model provides a packing buffer device so that the liquid entering the buffer tank can flow out more evenly, which can adapt to the kinetic energy buffering of the liquid under large flow rate and reduce overflow; when the liquid flows out of the distribution tank, the spray hole on the side cooperates with the liquid baffle plate to make the liquid flow out of the entire distribution device evenly, thereby improving the uniformity and density of the liquid spray points and realizing the improvement of the performance of the liquid distributor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 yes Figure 1 A partial enlarged view of middle A;
[0020] In the figure, 1 is a transition groove, 2 is a buffer groove, 3 is a saddle ring, 4 is a distribution hole, 5 is a distribution box, 6 is a liquid guide hole, 7 is a distribution groove, 8 is an overflow hole, 9 is a spray hole, and 10 is a liquid baffle. DETAILED DESCRIPTION
[0021] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0022] like Figure 1 As shown, the utility model discloses a novel liquid distribution device, which improves the existing buffer tank, and sets a primary buffer device and a secondary buffer device in sequence from top to bottom along the liquid flow direction. The primary buffer device also includes a filler buffer device set in the buffer tank 2 box and a transition buffer device set outside the box. The buffer tank is a rectangular box with round holes on the surface, which plays a preliminary buffering role on the liquid while meeting the liquid flow rate.
[0023] The specific introduction of the packing buffer device is as follows:
[0024] A plurality of saddle rings 3 are placed in the buffer tank 2. The structure of the saddle rings is annular filler. It is processed by continuous extrusion and has the advantages of large flux, low pressure drop, high efficiency, etc. The packing bed composed of multiple saddle rings in the buffer tank has a large porosity. The bed is mostly arc-shaped liquid channels, which reduces the resistance of the medium passing through the bed and reduces the radial diffusion coefficient of the liquid when it flows downward, which can effectively diffuse the liquid horizontally. The packing buffer device makes the liquid entering the liquid distribution tank more uniform, which can adapt to the liquid kinetic energy buffering under large flow and reduce overflow.
[0025] The specific introduction of the transition buffer device is as follows:
[0026] The transition groove 1 is set outside the buffer groove 2, and the top of the transition groove 1 is lower than the top of the buffer groove 2, and the bottom of the transition groove 1 is lower than the bottom of the buffer groove 2. After the liquid flows into the buffer groove from the top of the buffer groove 2, the first buffering effect of multiple saddle rings 3 reduces the speed of the downstream flow, and flows out from the distribution hole 4 at the bottom of the buffer groove. The distribution hole plays a second buffering role for the liquid. The liquid after flowing out does not directly enter the bottom, but first flows into the transition groove 1, and after gathering to a certain extent in the transition groove, it continues to move downward through the distribution box 5 connected to the bottom of the transition groove.
[0027] The specific introduction of the secondary buffer device is as follows:
[0028] A distribution box 5 is embedded at the bottom of the transition groove 1. The distribution box 5 is a box with an opening facing downward. The lower opening of the distribution box 5 is located below the transition groove 1. A distribution groove 7 is set below the outer opening of the distribution box. The distribution groove 7 is a cone structure with an upper end open and a lower end closed. A liquid guide hole 6 is opened on the side of the distribution box. The liquid guide hole 6 is located in the transition groove 1. When the liquid level in the transition groove reaches the position of the liquid guide hole 6, the liquid enters the distribution box 5 through the liquid guide hole 6, and then flows into the distribution groove 7 below through the distribution box 5. Figure 2 As shown, overflow holes 8 and spray holes 9 are sequentially opened on the side of the distribution groove 7 from top to bottom. The spray hole is a circular hole with an aperture of 1.8-10mm, and a plurality of spray holes are evenly distributed in a horizontal straight line on the side wall of the distribution groove; the overflow hole is an inverted triangular hole, which is evenly distributed in a horizontal straight line on the side wall of the distribution groove above the spray hole 9. A 10*20mm rib plate is vertically welded on the outside of the distribution groove, and the other end of the rib plate is connected to a liquid baffle plate 10. The liquid baffle plate is separated from the outside of the distribution groove by a spacing of 10mm. The installation height of the liquid baffle plate 10 is higher than the height of the spray hole 9 and lower than the height of the overflow hole 8. The bottom of the liquid baffle plate is a toothed structure. Through the reasonable arrangement of the spray holes, the liquid flows out of the distribution groove 7 evenly, the liquid baffle plate is at right angles to the liquid sprayed from the spray hole, and then the liquid baffle plate 10 is used to improve the uniformity and density of the liquid spray point, thereby improving the performance of the liquid distributor. The tooth shape of the liquid baffle plate can enhance the effect of the liquid baffle plate in evenly distributing the liquid, and buffer and distribute the columnar liquid into a uniform point distribution state.
[0029] Liquid flow rate is 50m 3 / h, the size of the packing fixture is set to 600×150×100mm, the size of the saddle ring packing is DN38, the spray hole spacing is 60mm, the hole diameter is 10mm, and the toothed liquid baffle spacing is 10mm.
[0030] The liquid enters the tower through the material inlet and is sprayed from the distribution pipe to the buffer tank 2. After being buffered by the saddle ring 3, the radial diffusion coefficient of the liquid is reduced when it flows downward, which plays an effective role in the lateral diffusion of the liquid. The liquid after preliminary buffering flows out from the distribution hole 4 below the buffer tank 2 and enters the box of the transition tank 1. When the liquid level in the box reaches the height of the liquid guide hole 6 of the distribution box 5, it flows out from the bottom of the distribution box 5 through the liquid guide hole 6 and enters the distribution tank 7. After the liquid level in the distribution tank 7 reaches the height of the spray hole 9, it is sprayed on the liquid baffle 10. When the liquid flow is too large and the liquid level in the distribution tank 7 reaches the overflow hole 8, the liquid flows out from the overflow hole 8 to reduce the load of the distributor. At this point, the liquid distribution device completes the uniform distribution of the liquid.
[0031] The above description is only a preferred implementation method of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A novel liquid distribution device, characterized in that: The buffer groove (2) is a box body with a hollow interior, through holes are provided at both the upper and lower ends of the box body, the buffer groove is provided with a primary buffer device, a distribution box is connected below the buffer groove, and the distribution box is provided with a secondary buffer device.
2. A novel liquid distribution device according to claim 1, characterized in that: The primary buffer device comprises a filler buffer device arranged inside the box body and a transition buffer device arranged outside the box body.
3. A novel liquid distribution device according to claim 2, characterized in that: The packing buffer device is a plurality of saddle rings (3) installed in the buffer groove and used to provide a curved channel for the liquid.
4. A novel liquid distribution device according to claim 2, characterized in that: The transition buffer device comprises a gradual transition groove (1), wherein the transition groove (1) is sleeved on the outside of a buffer groove (2), a distribution box (5) is connected below the transition groove (1), a side wall of the distribution box (5) is provided with a liquid guide hole (6), and the liquid guide hole (6) is located inside the transition groove (1).
5. A novel liquid distribution device according to claim 4, characterized in that: The top end of the buffer groove (2) is higher than the top end of the transition groove (1).
6. A novel liquid distribution device according to claim 2, characterized in that: The secondary buffer device comprises a distribution groove (7), a side wall of the distribution groove (7) is provided with a spray hole (9), and a liquid baffle (10) connected to the distribution groove (7) is provided outside the spray hole (9).
7. A novel liquid distribution device according to claim 6, characterized in that: An overflow hole (8) is provided on the side wall of the distribution groove (7) above the spray hole (9).
8. A novel liquid distribution device according to claim 7, characterized in that: A plurality of dispersion teeth are arranged at the lower end of the liquid baffle plate (10).
9. A novel liquid distribution device according to claim 7, characterized in that: There is a set gap between the liquid baffle plate (10) and the outer wall of the distribution groove (7).
10. A novel liquid distribution device according to claim 7, characterized in that: The height of the liquid baffle plate (10) is higher than the height of the spray hole (9) and lower than the height of the overflow hole (8).