Gas-liquid distribution device based on multi-stage fluid momentum gradient regulation and control

Abstract

The utility model discloses a gas-liquid distribution device based on multi-stage fluid momentum gradient regulation and control, and relates to the field of gas-liquid distribution devices.The gas-liquid distribution device comprises a water-resisting layer body, a flow guide assembly, a flow collecting groove and a water distribution tooth-shaped groove set, the outer edge of the water-resisting layer body is connected to the inner wall of a reaction container, and in addition, the flow guide assembly is connected to the inner wall of the reaction container; an opening matched with the water inlet is formed in the water-resisting layer body, an annular boss is arranged on the edge of the opening in an upward protruding mode, and the annular boss, the water-resisting layer body and the inner wall of the reaction container are matched to form a water collecting cavity. Compared with the prior art, during operation, after the water collection cavity is matched with the flow guide assembly to collect liquid flowing in from the top, the tooth-shaped structure of the water diversion tooth-shaped groove group is used for implementing three times of cutting, and discrete liquid columns with uniformly distributed spaces are formed.

Description

Technical Field

[0001] This application relates to the field of gas-liquid distribution devices, and in particular to a gas-liquid distribution device based on multi-stage fluid momentum gradient control. Background Technology

[0002] In chemical and pharmaceutical reaction equipment, the uniform mixing of liquid and packing material directly affects reaction efficiency and product quality. Existing liquid collectors mostly employ single-layer or double-layer distribution structures, such as single-layer perforated plates, conical distributors, or combined tubular distributors, achieving initial liquid dispersion through openings or guide channels. These structures can meet basic distribution requirements under low-flow, low-viscosity liquid conditions. However, when handling high-flow, high-viscosity, or complex media containing solid particles, radial velocity differences easily arise after the liquid passes through the distribution structure, leading to channeling or dead zones in the packing layer. The fundamental reason lies in the fluid dynamics defects of traditional distribution structures: single-layer distribution is limited by structural strength requirements, and the porosity is negatively correlated with distribution uniformity; while double-layer distribution can improve local flow, interlayer fluid interference leads to secondary distribution disorder, especially lacking adaptive adjustment capability under dynamic conditions. These distribution defects not only reduce mass transfer efficiency but also cause local overheating or incomplete reactions, forcing companies to compensate for efficiency losses by extending reaction time or increasing the number of cycles, resulting in increased energy consumption and production costs.

[0003] In recent years, with the widespread application of novel packing materials such as nanocatalysts, the demand for refined control of liquid distribution has become more urgent. Traditional liquid collectors suffer from insufficient distribution uniformity, resulting in surface utilization rates of highly active packing materials generally below 65%, and they are prone to breakage due to localized erosion. Furthermore, existing structures are ill-suited to the compact design trend of modular reactors, and the excessively large volume of the distributor hinders the miniaturization of equipment. These problems reveal that traditional distribution technologies are insufficient to meet the dual demands of modern continuous production processes for process intensification and equipment integration. Therefore, developing novel liquid distribution technologies has significant engineering value for improving overall reactor performance, reducing unit energy consumption, and extending catalyst lifespan, especially in fields sensitive to reaction uniformity such as fine chemical synthesis and biopharmaceuticals, where it will play a crucial technological driving role. Utility Model Content

[0004] The purpose of this application is to overcome at least one deficiency of the prior art and to provide a gas-liquid distribution device based on multi-stage fluid but with gradient control.

[0005] To achieve the above objectives, this application discloses a gas-liquid distribution device based on multi-stage fluid momentum gradient control. The device comprises a water-proof layer body, a flow guiding assembly, a flow collecting channel, and a water-distributing toothed channel assembly.

[0006] The outer edge of the waterproof layer body is connected to the inner wall of the reaction vessel. In addition, the waterproof layer body is provided with an opening that matches the water inlet. An annular protrusion is provided on the edge of the opening. The annular protrusion and the waterproof layer body and the inner wall of the reaction vessel cooperate to form a water collection cavity. A flow guiding assembly is provided above the opening of the annular protrusion. The flow guiding assembly is composed of several strip-shaped flow guiding groove plates, which are used to guide the liquid sent in by the water inlet into the water collection cavity.

[0007] The flow collection channel is horizontally positioned below the waterproof layer body and opposite the annular protrusion.

[0008] The water collection cavity is connected to the collection trough through a guide pipe inserted into the collection trough, and an overflow port is provided at the top edge of the water collection cavity.

[0009] Several water-dividing toothed grooves are arranged vertically below the collection groove. Each water-dividing toothed groove is matched with an overflow port to receive the liquid flowing out of the overflow port.

[0010] The lower edge of the upper edge of the water-dividing toothed groove is toothed, allowing liquid to overflow and be discharged evenly from the water-dividing toothed groove.

[0011] Furthermore, the guide plate has a multi-fold structure, forming at least one V-shaped groove with open ends, and has several micro-straight grooves on the surface of the V-shaped groove along the direction of the V-shaped groove, which are used to reduce splashing when liquid falls into the V-shaped groove.

[0012] Furthermore, adjacent flow guide plates overlap vertically, causing the flow guide assembly to completely block the opening.

[0013] Furthermore, the inner diameter of the guide tube decreases in a three-stage gradient of 1:0.7:0.5 along the flow direction.

[0014] Furthermore, the flow guiding component is connected and fixed to the annular boss via a connecting plate.

[0015] Furthermore, the flow collection channel is connected and fixed to the waterproof layer body via a connector.

[0016] Furthermore, the water-dividing toothed grooves maintain a relative interval through the connecting gaps, and are also connected to the collection groove through the connecting parts to achieve a fixed position.

[0017] Furthermore, the distance between the water-dividing toothed groove and the collecting groove is 30-60cm.

[0018] Compared with the prior art, in the operation of this application, after the water collection cavity and the flow guiding component collect the liquid flowing in from the top, the water is finally cut three times by the toothed structure of the water-dividing toothed groove group to form a spatially evenly distributed discrete liquid column.

[0019] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0020] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.

[0022] Figure 2 This is a schematic diagram of the structure of one embodiment disclosed in this application from another perspective.

[0023] Figure 3 This is a schematic diagram of the structure of one embodiment disclosed in this application after it is fitted with the inner wall of the container. Detailed Implementation

[0024] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0025] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0026] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0027] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0028] See attached document Figures 1 to 3 This embodiment details a gas-liquid distribution device based on multi-stage fluid momentum gradient control. Through innovative structural design and material selection, this device achieves efficient collection, precise flow guidance, and uniform distribution of liquids under complex operating conditions. The following provides a systematic description from three aspects: overall structural composition, connection relationships between components, and working principle. It also explains well-known technical aspects that are not detailed here.

[0029] Specifically, the gas-liquid distribution device mainly consists of a water-proof layer body 1, a flow guiding component 2, a flow collecting channel 3, and a water-distributing toothed channel group 4. The water-proof layer body 1 is integrally molded from fiberglass, and its outer edge forms a sealed connection with the inner wall of the reaction vessel 6 to ensure the sealing performance of the device under high flow rate conditions. A circular opening 7 is opened at the center of the water-proof layer body 1, and the edge of the opening 7 extends inward to form an annular protrusion 5. The annular protrusion 5, together with the water-proof layer body 1 and the inner wall of the reaction vessel 6, forms a water collecting cavity 8.

[0030] In this embodiment, the flow guiding component 2 consists of three horizontally arranged fiberglass flow guiding channels 201. Each flow guiding channel 201 adopts a multi-fold line structure to form a V-shaped channel with open ends. The included angle of the V-shaped channel is set to 120°±5° through CFD simulation verification. The surface is densely covered with a 0.5mm×1.2mm micro-straight channel array, with a micro-straight channel spacing of 2mm. This micro-straight channel structure design is based on the principle of turbulence drag reduction. By disrupting the surface tension balance during droplet impact, it allows the liquid to smoothly transition to the water collection cavity in a laminar flow state. Adjacent flow guiding channels 201 are designed with a non-overlapping overlap, with the overlap area being 1 / 3 of the channel width, forming a labyrinthine sealing structure that completely blocks the opening 7, preventing liquid from directly flowing into the opening. The flow guiding component 2 is fixedly connected to the annular boss 5 through a fiberglass connecting plate.

[0031] In this embodiment, the collection trough 3 is molded from fiberglass and has a rectangular cross-section, with the upper end open. The collection trough 3 is fixed to the pre-embedded mounting base of the waterproof layer body 1 via stainless steel connectors. The connectors are designed to be built-in to prevent liquid from forming residue at the connection point. Furthermore, the upper edge of the collection trough 3 is provided with a rectangular overflow port that mates with the water-dividing toothed groove assembly 4.

[0032] Two guide tubes 9 are inserted at the bottom of the water collection chamber 8. The inner wall of the guide tubes 9 is mirror polished with a roughness Ra≤0.2μm to ensure smooth liquid flow.

[0033] The water-distributing toothed channel group 4 consists of multiple longitudinally arranged water-distributing toothed channels 401. Each water-distributing toothed channel 401 is matched with a corresponding overflow outlet, and the opening width of the overflow outlet is 1 / 3 of the width of the water-distributing toothed channel 401. Each water-distributing toothed channel 401 is injection molded from fiberglass, with its upper and lower edges designed as toothed structures, forming several micro-V-shaped outlets. This toothed design is based on the boundary layer theory of fluid dynamics, enabling the liquid to form a stable liquid film splitting effect during the overflow process, achieving uniform distribution. The water-distributing toothed channel 401 is fixed to the mounting base at the bottom of the collecting channel 3 via connectors. The distance between the water-distributing toothed channel 401 and the collecting channel is optimized to 45cm.

[0034] More specifically, the guide tube 9 adopts a tapered design, with its inner diameter decreasing in three stages along the flow direction at a ratio of 1:0.7:0.5, and the tube wall thickness increasing linearly from 2.0 mm at the inlet to 3.5 mm at the outlet. This variable cross-section design is based on the principle of fluid energy conservation according to Bernoulli's equation. By precisely controlling the conversion of the fluid's kinetic and potential energy, it maintains a stable velocity gradient during the guiding process.

[0035] In the inter-packing layer operating unit of a chemical synthesis reactor, the process for collecting liquid columns or droplets falling from the upper packing layer is as follows:

[0036] The water collection cavity receives the liquid flow (including discrete liquid columns and droplets) falling vertically from the bottom of the upper packing layer. The bowl-shaped flared structure of the water collection cavity 8 completely receives the liquid flow, eliminating the impact energy of free fall.

[0037] Cavity transfer: The bottom of the water collection cavity 8 is connected to the guide pipe 9, and the liquid is steadily transported to the annular collection tank 3 by using the hydrostatic pressure difference of the fluid.

[0038] Overflow distribution in the tank: When the liquid level in the collecting tank 3 reaches the upper edge, it is then evenly distributed into the toothed distribution groove 401. The liquid overflows evenly along the periodic toothed structure of the toothed distribution groove 401. The thin-walled overflow surface formed by each tooth tip constrains the liquid film shape through capillary force, ensuring that the liquid entering the lower packing layer is continuously and evenly distributed.

[0039] It should be noted that the standard component connection methods (such as threaded connections, snap-fit ​​structures, etc.) and conventional sealing methods (such as O-ring seals, gasket seals, etc.) involved in this embodiment are all well-known technologies to those skilled in the art and have not been described in detail. The selection of materials and basic machining processes (such as injection molding, compression molding, etc.) are also within the scope of existing technology, and those skilled in the art can select appropriate materials and processing parameters according to actual working conditions.

[0040] Through the detailed explanation of the above structural design and working principle, the gas-liquid distribution device of this embodiment exhibits excellent liquid distribution performance under various complex working conditions. Especially in the processing of high-flow-rate, high-viscosity liquids, it effectively avoids common problems in traditional distribution devices such as liquid deviation and wall adhesion, providing an innovative technical solution for liquid treatment in chemical, environmental protection, and other fields. The innovative design and optimized parameters of this device have undergone rigorous experimental verification and engineering practice testing to ensure stable and reliable achievement of the expected functions in practical applications.

[0041] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A gas-liquid distribution device based on multi-stage fluid momentum gradient control, characterized in that, The gas-liquid distribution device comprises a water-proof layer body, a flow guiding assembly, a flow collecting channel, and a water-distributing toothed channel assembly. The outer edge of the waterproof layer body is connected to the inner wall of the reaction vessel. In addition, the waterproof layer body is provided with an opening that matches the water inlet. An annular protrusion is provided on the edge of the opening. The annular protrusion and the waterproof layer body and the inner wall of the reaction vessel cooperate to form a water collection cavity. A flow guiding assembly is provided above the opening of the annular protrusion. The flow guiding assembly is composed of several strip-shaped flow guiding groove plates, which are used to guide the liquid sent in by the water inlet into the water collection cavity. The collection channel is horizontally positioned below the waterproof layer body and opposite the annular protrusion. The water collection cavity is connected to the collection trough through a guide pipe inserted into the collection trough, and an overflow port is provided at the top edge of the water collection cavity. Several water-dividing toothed grooves are arranged vertically below the collection groove. Each water-dividing toothed groove is matched with an overflow port to receive the liquid flowing out of the overflow port. The lower edge of the upper edge of the water-dividing toothed groove is toothed, allowing liquid to overflow and be discharged evenly from the water-dividing toothed groove.

2. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The guide plate has a multi-fold structure, forming at least one V-shaped groove with open ends, and has several micro-straight grooves on the surface of the V-shaped groove along the direction of the V-shaped groove, which are used to reduce splashing when liquid falls into the V-shaped groove.

3. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The adjacent flow guide plates overlap vertically, causing the flow guide assembly to completely block the opening.

4. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The inner diameter of the guide tube decreases in a three-stage gradient of 1:0.7:0.5 along the flow direction.

5. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The flow guiding component is connected and fixed to the annular boss via a connecting plate.

6. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The flow collection channel is connected and fixed to the waterproof layer body through a connector.

7. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The water-dividing toothed grooves are kept at a relative interval through the connecting gaps, and are also connected to the collection groove through the connecting parts to achieve fixed position.

8. The gas-liquid distribution device based on multi-stage fluid momentum gradient control as described in claim 1, characterized in that, The distance between the water-dividing toothed groove and the collection groove is 30-60cm.

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