Heterogeneous reactor

Abstract

The application discloses a multi-phase reactor, which comprises a reactor shell with a reaction cavity formed inside, a second material inlet pipe and a first material inlet pipe communicated with the reaction cavity, wherein the first material inlet pipe is used for conveying the first material to the reaction cavity; a gas distributor located in the reaction cavity, the second material inlet pipe is communicated with the gas distributor, and the second material conveyed by the second material inlet pipe is conveyed to the reaction cavity through the gas distributor; and a draft tube located in the reaction cavity, wherein a plurality of air passages are arranged on the draft tube along the circumference of the reactor shell, and the draft tube is used for axial flow guiding and radial cutting in the reaction cavity. The application solves the technical problems of uneven temperature field and reaction field distribution of the multi-phase reactor, and influences the reaction efficiency and increases the material consumption.

Description

Technical Field

[0001] This invention relates to the field of reaction equipment, and more particularly to a multiphase reactor, especially a multiphase reactor with a flow guiding structure to enhance axial gas distribution. Background Technology

[0002] Multiphase reaction processes are among the most important and complex processes in the chemical industry, involving physical and chemical processes such as mass transfer, mixing, and reaction between working fluids. In particular, the mixing efficiency of materials within a multiphase reactor is positively correlated with the efficiency of heat transfer, mass transfer, and chemical reaction.

[0003] Currently, multiphase reactors mainly include stirred tank reactors and bubble reactors. Stirred tank reactors have disadvantages such as violent reactions, increased material consumption, high energy consumption, and susceptibility to mechanical failures. Bubble reactors have the advantages of not involving large agitators, mild reactions, low material consumption, and no energy consumption. However, bubble reactors use traditional feeding methods and gas distributors, making it difficult to ensure the uniformity of material and gas distribution inside. This can lead to uneven distribution of the temperature and reaction fields, which can easily generate eddies, affecting the circulation of materials within the reactor. This results in increased material consumption, incomplete reactions, and high production costs, thus affecting production quality and economic benefits.

[0004] In one embodiment, such as Figure 1As shown, the bubbling reactor includes a vertically arranged reactor shell 100 and an annular gas distributor 300 disposed inside the reactor shell 100 and near its bottom. One end of the inlet pipe 200 is connected to the reactor shell 100, and the other end of the inlet pipe 200 extends to the outside of the reactor shell 100 to supply gas (such as air) into the reactor shell 100 and deliver it into the reactor shell 100 through the annular gas distributor 300. A material inlet pipe 400 is arranged vertically in the lower middle part of the reactor shell 100 to feed flowable reactants into the reactor shell 100, thereby allowing the reaction to take place inside the reactor shell 100. However, because the annular gas distributor 300 is located near the bottom of the reactor shell 100, and the material inlet on the material inlet pipe 400 is located in the middle of the reactor shell 100 and close to the inner wall of the reactor shell 100, the gas (such as air) near the bottom of the reactor shell 100 is sufficient, and the reaction is violent, but the reactants cannot be replenished in time, resulting in excessively high local reaction temperature inside the reactor shell 100, which may be accompanied by side reactions. On the other hand, the gas (such as air) content near the feed inlet inside the reactor shell 100 is low, which is not conducive to the reaction. Furthermore, local eddies appear inside the reactor shell 100. At the same time, a large amount of reactants (cold medium) in this area will cause local low temperature, exacerbating the uneven distribution of temperature field and reaction field inside the reactor shell 100.

[0005] There is currently no effective solution to the problem of uneven temperature and reaction field distribution in multiphase reactors, which affects reaction efficiency and increases material consumption.

[0006] Therefore, based on years of experience and practice in related industries, the inventor proposes a multiphase reactor to overcome the shortcomings of existing technologies. Summary of the Invention

[0007] The purpose of this invention is to provide a multiphase reactor that, by setting an internal flow guiding structure and enhancing axial gas distribution, optimizes the uniform distribution of the temperature field and reaction field, improves the reaction efficiency of the multiphase reactor, effectively reduces raw material consumption, and helps to improve production quality and efficiency.

[0008] The objective of this invention can be achieved through the following methods:

[0009] This invention provides a multiphase reactor, the multiphase reactor comprising:

[0010] A reactor shell with an internal reaction chamber is provided on the reactor shell, and a second material inlet pipe and a first material inlet pipe communicating with the reaction chamber are provided on the reactor shell. The first material inlet pipe is used to transport the first material to the reaction chamber.

[0011] A gas distributor is located inside the reaction chamber, and the second material inlet pipe is connected to the gas distributor. The second material conveyed by the second material inlet pipe is conveyed to the reaction chamber through the gas distributor.

[0012] At least one flow guide tube is located in the reaction chamber, and multiple ventilation sections are arranged on the flow guide tube along the circumference of the reactor shell. The flow guide tube is used to guide the flow axially and cut radially in the reaction chamber.

[0013] In a preferred embodiment of the present invention, the outlet end of the first material inlet pipe is located outside the reactor shell, and the inlet end of the first material inlet pipe extends to the inside of the guide tube.

[0014] In a preferred embodiment of the present invention, the first material inlet pipe is located in the lower middle part of the reaction chamber; the second material inlet pipe is located at the bottom or near the bottom of the reaction chamber, and the gas distributor can promote the axial distribution of the second material conveyed by the second material inlet pipe within the reaction chamber.

[0015] In a preferred embodiment of the present invention, the guide tube is a cylindrical shape with openings at the top and bottom, the guide tube is coaxially arranged with the reactor shell, and a plurality of ventilation sections are distributed at intervals along the circumference of the guide tube.

[0016] In a preferred embodiment of the present invention, there are multiple guide tubes, which are arranged at intervals along the axial direction of the reaction chamber.

[0017] In a preferred embodiment of the present invention, the guide tube is formed by a plurality of baffles arranged at intervals along the circumference of the reaction chamber, and the plurality of baffles are connected to the inner wall of the reactor shell by fasteners, with a gap between adjacent baffles to form the ventilation section.

[0018] In a preferred embodiment of the present invention, the guide tube is a cylinder disposed in the reaction chamber, and the cylinder is connected to the inner wall of the reactor shell by a plurality of fasteners distributed along the circumference of the cylinder. A plurality of vent holes or vent channels are arranged at intervals along the circumference of the cylinder to form the venting section.

[0019] In a preferred embodiment of the present invention, the gas distributor includes:

[0020] A first gas distributor connected to the second material inlet pipe, wherein the first gas distributor is an annular hollow structure arranged circumferentially along the reaction chamber, and the first gas distributor has a plurality of first gas holes;

[0021] The second gas distributor is a hollow tubular structure extending axially along the reaction chamber. The second gas distributor has multiple second gas holes. The first gas distributor and the second gas distributor are connected by a connecting pipe.

[0022] In a preferred embodiment of the invention, along the axial direction of the reaction chamber, the second gas distributor extends at least to a position opposite to or close to the first material inlet pipe.

[0023] In a preferred embodiment of the present invention, the first gas distributor includes a bottom gas distributor located below the bottom guide tube and an intermediate gas distributor located between two adjacent guide tubes, wherein the bottom gas distributor and the intermediate gas distributor are respectively connected to the second gas distributor through connecting pipes;

[0024] The connecting pipe between the bottom gas distributor and the second gas distributor is inclined upwards from the axis away from the reaction chamber to the axis closer to the reaction chamber.

[0025] In a preferred embodiment of the present invention, there are multiple connecting pipes connecting the first gas distributor and the second gas distributor, and the multiple connecting pipes are arranged at intervals along the circumference of the first gas distributor and the second gas distributor.

[0026] In a preferred embodiment of the present invention, the diameter of the bottom gas distributor is less than or equal to the inner diameter of the guide tube;

[0027] The diameter of the intermediate gas distributor is greater than or equal to the outer diameter of the guide tube.

[0028] In a preferred embodiment of the present invention, both the first gas distributor and the second gas distributor are coaxially arranged with the reactor shell.

[0029] In a preferred embodiment of the present invention, there are multiple first material inlet pipes, which are arranged at intervals along the circumference of the reactor shell.

[0030] Based on the above, the characteristics and advantages of the multiphase reactor of the present invention are:

[0031] A flow guide tube can be installed in the reactor shell to promote the axial flow of the medium inside the reactor shell. Multiple ventilation sections are arranged on the flow guide tube along the circumference of the reactor shell. The ventilation sections can be used to perform radial cutting in the reaction chamber, realize the re-cutting and breaking of multiphase media, enhance the mixing effect, effectively eliminate local viscous flow in the reaction chamber, make the medium mixing more efficient and faster, and at the same time, reduce the wall effect, enhance the mass and heat transfer of the medium, and improve the reaction effect.

[0032] A gas distributor is installed inside the reaction chamber. By combining the gas distributor with the guide tube, the distribution of the first and second materials can be made more uniform, maximizing the reaction efficiency while effectively reducing the temperature gradient inside the reaction chamber. This avoids excessive local temperature stress, making the reaction field more uniform, the reaction inside the reaction chamber more thorough, improving the reaction efficiency of the multiphase reactor, effectively reducing raw material consumption, and ensuring the safe and stable operation of the reaction. Attached Figure Description

[0033] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0034] in:

[0035] Figure 1 : This is a schematic diagram of the structure of a bubble-type reactor in the prior art.

[0036] Figure 2 : This is a schematic diagram of the multiphase reactor of the present invention.

[0037] Figure 3 This is one of the top-view cross-sectional schematic diagrams of the guide tube in the multiphase reactor of the present invention.

[0038] Figure 4 This is the second top view cross-sectional schematic diagram of the guide tube in the multiphase reactor of the present invention.

[0039] Figure 5 This is a schematic diagram of the material flow direction within the multiphase reactor of the present invention.

[0040] The reference numerals in the background art are:

[0041] 100. Reactor shell; 200. Inlet pipe;

[0042] 300. Annular gas distributor; 400. Material inlet pipe.

[0043] The reference numerals in the accompanying drawings of this invention are:

[0044] 1. Reactor shell; 101. Reaction chamber;

[0045] 2. Flow guide tube; 201. Baffle;

[0046] 202. Gap; 203. Cylinder;

[0047] 204. Vent hole; 3. Fastener;

[0048] 4. First gas distributor; 401. First gas inlet;

[0049] 5. Connecting pipe; 6. Second gas distributor;

[0050] 601. Second vent; 7. First material inlet pipe;

[0051] 8. Second material inlet pipe; 9. Demister. Detailed Implementation

[0052] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0053] In this invention, terms such as "upper," "lower," "top," "bottom," and "vertical" that indicate direction are all used in this way. Figure 2 The terms "up," "down," "top," "bottom," and "vertical" are used as references to more clearly describe positional relationships, and are not intended to limit the actual directions. This is explained here.

[0054] like Figures 2 to 5 As shown, the present invention provides a multiphase reactor, which includes a reactor shell 1, a gas distributor, and at least one flow guide tube 2. A reaction chamber 101 is formed inside the reactor shell 1. The reaction chamber 101 is a vertically arranged columnar chamber. A second material inlet pipe 8 and a first material inlet pipe 7 communicating with the reaction chamber 101 are provided on the reactor shell 1. The first material inlet pipe 7 is used to transport the first material into the reaction chamber 101. The gas distributor and at least one flow guide tube 2 are both located in the reaction chamber 101. The second material inlet pipe 8 is connected to the gas distributor. The second material transported by the second material inlet pipe 8 is transported into the reaction chamber 101 through the gas distributor. Multiple ventilation sections are arranged on the flow guide tube 2 along the circumference of the reactor shell 1. The flow guide tube 2 is used to perform axial flow guidance and radial cutting in the reaction chamber 101.

[0055] This invention includes a flow guide tube 2 installed in the reactor shell 1. The flow guide tube 2 promotes the axial flow of the medium within the reactor shell 1. Multiple venting sections are arranged circumferentially on the flow guide tube 2 along the reactor shell 1. These venting sections cut and break up the medium (first material and / or second material, or the product of the reaction between the first and second materials) flowing within the reaction chamber 101, achieving further cutting and breaking up of the multiphase medium, enhancing the mixing effect, effectively eliminating localized viscous flow within the reaction chamber 101, making the medium mixing more efficient and rapid. Simultaneously, it weakens the wall effect, enhances mass and heat transfer, and improves the reaction effect. Furthermore, a gas distributor is installed within the reaction chamber 101. The combination of the gas distributor and the flow guide tube 2 ensures a more uniform distribution of the first and second materials, maximizing reaction efficiency while effectively reducing the temperature gradient within the reaction chamber 101, avoiding excessive localized temperature stress, making the reaction field more uniform, allowing for a more thorough reaction within the reaction chamber 101, improving the reaction efficiency of the multiphase reactor, effectively reducing raw material consumption, and ensuring the safe and stable operation of the reaction.

[0056] The first material includes liquid reactants. The second material inlet pipe 8 includes an air inlet pipe, and the second material includes air. This invention aims to protect the structure of the multiphase reactor and does not limit the types of the first and second materials.

[0057] In an optional embodiment of the present invention, such as Figure 2 As shown, the outlet end of the first material inlet pipe 7 extends to the inner side of the guide tube 2. On the one hand, this allows the first material to be distributed around the outer periphery of the second gas distributor 6, facilitating the adjustment of the ratio of the first material to the second material. This ensures that the second material (such as air) can react chemically with sufficient first material in the first instance, reducing excessive chemical reactions and intermediate products caused by an excess of the second material (such as air). This minimizes the feed amount of the second material (such as air), reducing production costs and ensuring economic benefits. On the other hand, it allows the reaction to occur away from the inner wall of the reactor shell 1, preventing excessive local thermal stress at discontinuous points on the inner wall of the reactor shell 1. This avoids local material failure and disruption of stable equipment operation caused by such situations.

[0058] Furthermore, such as Figure 2As shown, the first material inlet pipe 7 and the second material inlet pipe 8 are distributed along the axial direction of the reaction chamber 101. The first material inlet pipe 7 is located in the lower middle part of the reaction chamber 101, and the second material inlet pipe 8 is located at or near the bottom of the reaction chamber 101. The relative positions of the first material inlet pipe 7 and the second material inlet pipe 8 allow the medium in the reaction chamber 101 to flow axially. Combined with the guide tube 2, this further guides the axial flow of the medium in the reaction chamber 101. Simultaneously, the venting section on the guide tube 2 allows for the cutting and breaking of the medium, thereby enhancing the mixing effect and making the mixing more efficient and rapid, thus improving the reaction effect. Furthermore, the gas distributor promotes the axial distribution of the second material conveyed by the second material inlet pipe 8 within the reaction chamber 101.

[0059] In an optional embodiment of the present invention, such as Figures 2 to 5 As shown, the guide tube 2 is a vertically arranged cylindrical tube with openings at the top and bottom. The guide tube 2 is coaxially arranged with the reactor shell 1, and multiple ventilation sections are distributed at intervals along the circumference of the guide tube 2. The multiple ventilation sections can be evenly distributed on the guide tube 2, or their distribution positions can be adjusted according to the distance from the first material inlet pipe 7, so that the multiple ventilation sections are not evenly distributed, ensuring that the first material entering the reaction chamber 101 is adequately guided radially.

[0060] Furthermore, such as Figure 2 , Figure 5 As shown, there are multiple guide tubes 2, all coaxially arranged with the reaction chamber 101. These guide tubes 2 are spaced apart and evenly distributed along the axial direction of the reaction chamber 101 (i.e., the spacing between any two adjacent guide tubes 2 is equal). The bottom surface of the guide tube 2 located at the bottom is higher than the bottom end cap welding position (i.e., the welding line) of the reactor shell 1. The number of guide tubes 2 can be adjusted according to the height of the reaction chamber 101 to achieve radial flow guidance of the medium within the reaction chamber 101, maximizing the reaction effect. Specifically, depending on the actual layout, any two adjacent guide tubes 2 can be spaced at the same vertical distance.

[0061] In an optional embodiment of the present invention, such as Figure 2 As shown, the diameter of the guide tube 2 is smaller than the diameter of the reactor shell 1. The inlet end of the first material inlet pipe 7 is located outside the reactor shell 1, and the outlet end of the first material inlet pipe 7 extends to the inside of the guide tube 2. The cross-sectional area of ​​the guide tube 2 can be approximately 50% to 75% of the cross-sectional area of ​​the reactor shell 1, or the diameter of the guide tube 2 can be approximately 70% to 86% of the diameter of the reactor shell 1.

[0062] In this invention, two structural forms of the guide tube 2 are provided.

[0063] One structural form of the guide tube 2 is as follows: Figure 3 As shown, the guide tube 2 is formed by multiple baffles 201 with arc-shaped cross-sections arranged at intervals around the circumference of the reaction chamber 101. The multiple baffles 201 are connected to the inner wall of the reactor shell 1 by fasteners 3. A gap 202 is left between adjacent baffles 201 to connect the inner and outer sides of the guide tube 2, forming the aforementioned ventilation section. The baffles 201 can be evenly distributed around the axis of the reaction chamber 101, with gaps 202 between adjacent baffles 201. The tops and bottoms of the multiple baffles 201 forming each guide tube 2 are all horizontally aligned. The gaps 202 can be evenly distributed or unevenly distributed according to the distance from the inlet end of the first material inlet pipe 7 or the degree of reaction, to achieve maximum reaction efficiency. The guide tube 2 is fixed to the inner wall of the reactor shell 1 by fasteners 3. The number of fasteners 3 is the same as the number of baffles 201 and they correspond one-to-one. In one specific embodiment of the present invention, the number of guide tubes 2 can be two, and each guide tube 2 can be formed by six baffles 201. The number of corresponding fasteners 3 is also six, with one fastener 3 fixing one baffle 201 to the inner wall of the reactor shell 1. In actual installation, each fastener 3 can be installed on the reactor shell 1 first, and then the multiple baffles 201 can be installed on the corresponding fasteners 3 respectively.

[0064] Another structural form of the guide tube 2 is as follows: Figure 4 As shown, the guide tube 2 is a cylindrical body 203 disposed within the reaction chamber 101. The cylindrical body 203 is connected to the inner wall of the reactor shell 1 by a plurality of fixing members 3 distributed circumferentially along the cylindrical body 203. A plurality of vent holes 204 or vent channels are arranged at intervals along the circumference of the cylindrical body 203 to form the aforementioned venting section. The plurality of vent holes 204 or vent channels can be evenly distributed or unevenly distributed according to the distance from the inlet end of the first material inlet pipe 7 or the degree of reaction to achieve maximum reaction efficiency. The number of fixing members 3 is greater than or equal to two and is evenly distributed along the circumference of the cylindrical body 203 to ensure the stable installation of the cylindrical body 203.

[0065] In this invention, by setting the gap 202, the vent hole 204, or the vent channel on the guide tube 2, the medium that mainly flows axially in the reaction chamber 101 can flow radially along the reaction chamber 101, thereby realizing the re-cutting and breaking of the multiphase medium, enhancing the mixing effect between the first substance and the second substance, thereby strengthening the radial circulation, changing the situation where the flow field in the traditional reactor is mainly axial, avoiding the problem of local viscous flow and low mixing efficiency. The setting of the guide tube 2 can also weaken the wall effect, reduce the radial temperature gradient, and further enhance the mass and heat transfer efficiency.

[0066] In an optional embodiment of the present invention, such as Figure 1 , Figure 5 As shown, the gas distributor includes a first gas distributor 4 and a second gas distributor 6 connected to the second material inlet pipe 8. The first gas distributor 4 is an annular hollow structure arranged circumferentially along the reaction chamber 101 (the first gas distributor 4 can also be named an annular gas distributor), and has multiple first vents 401. The second gas distributor 6 is a hollow tubular structure extending axially along the reaction chamber 101 (the second gas distributor 6 can also be named an axial gas distributor), and has multiple second vents 601. The first gas distributor 4 and the second gas distributor 6 are connected by a connecting pipe 5. The second material (such as air) conveyed by the second material inlet pipe 8 enters the first gas distributor 4 and the second gas distributor 6, thereby enabling the second material to be distributed circumferentially and radially within the reaction chamber 101, making the distribution of the second material within the reaction chamber 101 more uniform. By cooperating with the first gas distributor 4 and the second gas distributor 6, the second material output to the reaction chamber 101 through the first gas hole 401 and the second gas hole 601 exists in the form of a large number of small bubbles (with a diameter of 2 mm to 15 mm). With the feed rate of the second material remaining unchanged, the surface area of ​​the bubbles formed by the second material can be effectively increased, thereby increasing the contact area between the second material and the first material, improving the reaction efficiency, and making the reaction more thorough.

[0067] Furthermore, such as Figure 2 , Figure 5 As shown, both the first gas distributor 4 and the second gas distributor 6 can be coaxially arranged with the reactor shell 1.

[0068] In an optional embodiment of the present invention, a plurality of first vents 401 may be uniformly distributed on the first gas distributor 4, but the cross-sectional areas of the plurality of first vents 401 corresponding to different regions (e.g., a plurality of first vents 401 located at different heights axially) may be different. A plurality of second vents 601 may be uniformly distributed on the second gas distributor 6, but the cross-sectional areas of the plurality of second vents 601 corresponding to different regions (e.g., a plurality of second vents 601 located at different heights axially) may be different.

[0069] In this embodiment, as Figure 2 , Figure 5As shown, there are multiple first gas distributors 4, including a bottom gas distributor located below the bottom guide tube 2 and an intermediate gas distributor located between two adjacent guide tubes 2. The bottom gas distributor and the intermediate gas distributor are connected to the second gas distributor 6 via connecting pipes 5. The connecting pipe 5 between the bottom gas distributor and the second gas distributor 6 is inclined upwards from the axis away from the reaction chamber 101 to the axis closer to the reaction chamber 101, and the angle between the axis of the connecting pipe 5 and the axis of the reaction chamber 101 is greater than 0 and less than 90°. Through the cooperation of the guide tube 2 with the first gas distributors 4 and the second gas distributors 6, the reaction distribution in the axial direction of the traditional multiphase reactor is changed, effectively improving the reaction uniformity in all directions, greatly reducing the axial temperature gradient, maximizing the utilization of raw materials, and reducing production costs.

[0070] Furthermore, there are multiple connecting pipes 5 connecting the first gas distributor 4 and the second gas distributor 6. These multiple connecting pipes 5 are spaced apart and evenly distributed along the circumference of the first gas distributor 4 and the second gas distributor 6. Of course, the multiple connecting pipes 5 can also be unevenly distributed, but a stable connection between the first gas distributor 4 and the second gas distributor 6 must be ensured.

[0071] Furthermore, such as Figure 2 , Figure 5 As shown, the diameter of the bottom gas distributor is less than or equal to the inner diameter of the guide tube 2; the diameter of the middle gas distributor is greater than or equal to the outer diameter of the guide tube 2. This ensures that the second material output from both the bottom and middle gas distributors can smoothly enter the circulation region located on the outer periphery of the guide tube 2, and that the flow direction of the second material after output is consistent with... Figure 5 The overall circulation direction of the medium in the reaction chamber 101 remains consistent, which helps to improve reaction efficiency.

[0072] In an optional embodiment of the present invention, along the axial direction of the reaction chamber 101, the bottom of the second gas distributor 6 is connected to the bottom gas distributor via a connecting pipe 5. The second gas distributor 6 passes through the guide tube 2, and the top of the second gas distributor 6 extends at least to a position opposite to or close to the first material inlet pipe 7, ensuring that the second material output by the second gas distributor 6 can be evenly distributed along the axial direction of the reaction chamber 101 and fully mixed with the first material, thereby improving the reaction efficiency.

[0073] Furthermore, there are multiple first material inlet pipes 7, arranged circumferentially around the reactor shell 1, with their outlet ends extending into the inner side of the guide tube 2. The distance between the second gas distributor 6 and the outlet end of the first material inlet pipe 7 is 0.6 to 0.8 times the radius of the reactor shell 1. In traditional multiphase reactors, the distance between the outlet end of the material inlet pipe and the gas inlet is too great, resulting in excessive reaction time. Insufficient initial contact between the gas and sufficient material leads to an excessively high proportion of gas at the gas inlet, causing over-reaction and generating a large amount of intermediate products, thus affecting reactor efficiency. This invention extends the first material inlet pipe 7 inside the guide tube 2, effectively reducing these influencing factors and significantly improving reaction efficiency and quality. In addition, if heat is generated during the reaction between the first and second materials, the extension of the first material inlet pipe 7 inside the guide tube 2 keeps the reaction area away from the inner wall of the reactor shell 1, preventing excessive local thermal stress that could lead to local material failure and affect the stable operation of the multiphase reactor.

[0074] In an optional embodiment of the present invention, such as Figure 2 , Figure 5 As shown, a demister 9 is installed inside the reaction chamber 101 and at or near its top to remove mist.

[0075] The features and advantages of the multiphase reactor of the present invention are as follows:

[0076] 1. In this multiphase reactor, a flow guide tube 2 can be provided in the reactor shell 1. The flow guide tube 2 can promote the axial flow of the medium in the reactor shell 1. Multiple ventilation sections are arranged on the flow guide tube 2 along the circumference of the reactor shell 1. The ventilation sections can cut and break up the medium flowing in the reaction chamber 101, realize the re-cutting and breaking up of the multiphase medium, enhance the mixing effect, effectively eliminate the local viscous flow in the reaction chamber 101, make the medium mixing more efficient and faster, and at the same time, reduce the wall effect, enhance the mass and heat transfer of the medium, and improve the reaction effect.

[0077] Second, the combination of the gas distributor and the guide tube 2 in this multiphase reactor makes the distribution of the first and second materials more uniform, thereby maximizing the reaction efficiency while effectively reducing the temperature gradient in the reaction chamber 101, avoiding excessive local temperature stress, making the reaction field more uniform, and enabling the reaction in the reaction chamber 101 to be more thorough, improving the reaction efficiency of the multiphase reactor, effectively reducing raw material consumption, and ensuring the safe and stable progress of the reaction.

[0078] Third, this multiphase reactor, through the cooperation of the first gas distributor 4 and the second gas distributor 6, can refine the generated bubbles and optimize the gas distribution within the reaction chamber 101. Simultaneously, the guide tube 2 is used to transport the reactants to the central region or near the central region of the reactor shell 1, since the diameter of the guide tube 2 is smaller than the diameter of the reactor shell 1. Furthermore, the first material inlet pipe 7, distributed circumferentially along the reactor shell 1, also makes the material entering the reaction chamber 101 more uniform. Additionally, the guide tube 2 allows the reaction chamber 101 to be divided into zones, with different flow directions for the media in different zones (e.g.,...). Figure 5 As shown, the medium in the central region inside the guide tube 2 flows upward, and the medium in the annular region outside the guide tube 2 flows downward, forming a circulation of the medium in the reaction chamber 101. The multiple ventilation parts arranged on the guide tube 2 can promote the radial flow of the medium in the reaction chamber 101, and further refine the bubbles through collision, shearing and other actions, optimize the distribution of the medium, and improve the uniformity of the reaction.

[0079] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A multiphase reactor, characterized in that, The multiphase reactor includes: A reactor shell with an internal reaction chamber is provided on the reactor shell, and a second material inlet pipe and a first material inlet pipe communicating with the reaction chamber are provided on the reactor shell. The first material inlet pipe is used to transport the first material to the reaction chamber. A gas distributor is located inside the reaction chamber, and the second material inlet pipe is connected to the gas distributor. The second material conveyed by the second material inlet pipe is conveyed to the reaction chamber through the gas distributor. At least one flow guide tube is located in the reaction chamber, and multiple ventilation sections are arranged on the flow guide tube along the circumference of the reactor shell. The flow guide tube is used to perform axial flow guidance and radial cutting in the reaction chamber. Wherein, the outlet end of the first material inlet pipe is located outside the reactor shell, and the inlet end of the first material inlet pipe extends to the inside of the guide tube; The gas distributor includes: A first gas distributor connected to the second material inlet pipe, wherein the first gas distributor is an annular hollow structure arranged circumferentially along the reaction chamber, and the first gas distributor has a plurality of first gas holes; The second gas distributor is a hollow tubular structure extending along the axial direction of the reaction chamber. The second gas distributor has a plurality of second gas holes. The first gas distributor and the second gas distributor are connected by a connecting pipe. The first gas distributor includes a bottom gas distributor located below the bottom guide tube and an intermediate gas distributor located between two adjacent guide tubes. The bottom gas distributor and the intermediate gas distributor are respectively connected to the second gas distributor through connecting pipes. The connecting pipe between the bottom gas distributor and the second gas distributor is inclined upward from the axis away from the reaction chamber to the axis close to the reaction chamber.

2. The multiphase reactor as described in claim 1, characterized in that, The first material inlet pipe is located in the lower middle part of the reaction chamber; the second material inlet pipe is located at the bottom or near the bottom of the reaction chamber, and the gas distributor can facilitate the delivery of the second material through the second material inlet pipe into the reaction chamber.

3. The multiphase reactor as described in claim 1, characterized in that, The guide tube is a cylindrical shape with openings at the top and bottom. The guide tube is coaxially arranged with the reactor shell, and multiple ventilation sections are distributed at intervals along the circumference of the guide tube.

4. The multiphase reactor as described in claim 3, characterized in that, The number of the guide tubes is multiple, and the multiple guide tubes are arranged at intervals along the axial direction of the reaction chamber.

5. The multiphase reactor according to any one of claims 1 to 4, characterized in that, The flow guide tube is formed by multiple baffles arranged at intervals along the circumference of the reaction chamber. The multiple baffles are connected to the inner wall of the reactor shell by fasteners, and a gap is left between two adjacent baffles to form the ventilation section.

6. The multiphase reactor according to any one of claims 1 to 4, characterized in that, The guide tube is a cylinder disposed in the reaction chamber. The cylinder is connected to the inner wall of the reactor shell by a plurality of fasteners distributed along the circumference of the cylinder. A plurality of vent holes or vent channels are arranged at intervals along the circumference of the cylinder to form the venting section.

7. The multiphase reactor as described in claim 4, characterized in that, Along the axial direction of the reaction chamber, the second gas distributor extends at least to a position opposite to or close to the first material inlet pipe.

8. The multiphase reactor as described in claim 4, characterized in that, The number of connecting pipes connecting the first gas distributor and the second gas distributor is multiple, and the multiple connecting pipes are arranged at intervals along the circumference of the first gas distributor and the second gas distributor.

9. The multiphase reactor as described in claim 4, characterized in that, The diameter of the bottom gas distributor is less than or equal to the inner diameter of the guide tube; The diameter of the intermediate gas distributor is greater than or equal to the outer diameter of the guide tube.

10. The multiphase reactor as described in claim 4, characterized in that, Both the first gas distributor and the second gas distributor are coaxially arranged with the reactor shell.

11. The multiphase reactor as described in claim 1, characterized in that, The number of the first material inlet pipes is multiple, and the multiple first material inlet pipes are arranged at intervals along the circumference of the reactor shell.

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