Calabash-shaped microchannel reaction structure

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a calabash-shaped microchannel reaction structure, which comprises reaction flow channels, basic units and mixing structures, the basic units are arranged between the reaction flow channels, the upper and lower adjacent basic units are connected through the mixing structures, each reaction flow channel comprises a material inlet and a material outlet, and the material inlet is communicated with the material outlet. The material inlet is located at one end of the reaction flow channel, the material outlet is located at the other end of the reaction flow channel, the basic unit comprises a channel, stopping blocks and a stopping plate, the channel comprises an inlet, a reaction wall and an outlet, the stopping blocks are arranged at the inlet and the outlet and located in the basic unit, and the stopping plates are arranged on the stopping blocks. According to the micro-channel reactor disclosed by the utility model, the flow channel is of a baffle composite flow channel design, so that the processing difficulty of the baffle of the reactor is reduced, and the processing of the micro-channel reactor is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a gourd-shaped microchannel reaction structure. Background Technology

[0002] Microchannel technology refers to process enhancement technology that enables chemical reactions, heat exchange, mixing, and separation in three-dimensional process fluid channels with characteristic dimensions at the micrometer level. It can significantly improve heat and mass transfer efficiency and space utilization, achieve precise control of reaction conditions, and has inherent safety.

[0003] While some flow channel designs have low pressure drop, their mass transfer efficiency is weak. Therefore, there is a need to develop a microchannel reaction structure with good mass transfer efficiency, low pressure, and high liquid holdup per plate. Utility Model Content

[0004] Therefore, this utility model was made in view of the above problems. The purpose of this utility model is to solve the problems of low mixing efficiency and high pressure drop by utilizing the design of a composite flow channel. This utility model achieves the above objective through the following technical solution:

[0005] A gourd-shaped microchannel reaction structure includes: a reaction channel, a base unit, and a mixing structure. The base unit is provided between the reaction channels, and adjacent base units above and below are connected by the mixing structure. The reaction channel includes: a material inlet and a material outlet. The material inlet is located at one end of the reaction channel, and the material outlet is located at the other end of the reaction channel. The base unit includes: a channel, a blocking block, and a baffle plate. The channel includes: an inlet, a reaction wall, and an outlet. Blocks are provided at both the inlet and outlet, and inside the base unit. A baffle plate is provided between two sets of blocking blocks. The reaction wall and the blocking block form channel A, the reaction wall and the baffle plate form channel B, and the baffle plates form channel C. The baffle plate has a wavy shape with a raised center, which runs along the channel. A flow port is provided near the raised center, and a guide plate is provided at the flow port. Multiple triangular blocking blocks are equidistantly arranged along the central axis inside the mixing structure.

[0006] Preferably, the reaction wall is gourd-shaped, with a larger volume at the bottom and a curved wall surface at the top, while the upper volume is smaller.

[0007] Preferably, the blocking block is a parallelogram structure with four curved surfaces, and is symmetrically arranged at the entrance and exit.

[0008] Preferably, the basic units are arranged vertically, and the arrangement of adjacent columns of basic units is opposite, forming an S-shaped reaction channel with the basic units and the hybrid structure.

[0009] Preferably, the basic units are arranged vertically, and the arrangement of adjacent columns of basic units is opposite, forming an S-shaped reaction channel with the basic units and the hybrid structure.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. The reaction wall of this utility model is designed in the shape of a gourd, with a large inlet volume, which helps to reduce the pressure drop when the liquid enters.

[0012] 2. Through the unique layout of the arc-shaped reaction wall, the blocking block, and the baffle plate, the liquid undergoes a bifurcation process. First, it splits into two streams, then further into four, interwoven with rich mixing flows. Subsequently, these streams merge along the way, forming a two-in-one path. During this process, the liquid generates significant turbulence, accompanied by the interaction of reverse flows, thereby significantly enhancing the mixing efficiency.

[0013] 3. The basic unit of this utility model adopts a vertical arrangement. Its feature is that the arrangement direction of adjacent columns is mirrored and arranged very compactly. At the same time, the design of the mixing channel realizes the liquid diversion function. The formed S-shaped flow channel not only improves the liquid holding capacity of the reactor, but also further reduces the pressure drop of the system.

[0014] 4. The flow channel of this utility model is a baffle composite flow channel design, which reduces the difficulty of processing the baffles of the reactor and is beneficial to the processing of microchannel reactors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the reaction channel structure of this utility model.

[0016] Figure 2 This is a partial detail drawing of the basic unit of this utility model.

[0017] Figure 3 This is a schematic diagram showing the connection between the basic unit and the hybrid structure of this utility model.

[0018] Among them, 1. Reaction channel; 11. Material inlet; 12. Material outlet; 2. Basic unit; 21. Channel; 211. Inlet; 212. Reaction wall; 213. Outlet; 22. Block; 23. Baffle plate; 231. Guide plate; 3. Mixing structure; 31. Triangular block. Detailed Implementation

[0019] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] like Figure 1 As shown, a gourd-shaped microchannel reaction structure includes: a reaction channel 1, a basic unit 2, and a hybrid structure 3;

[0021] The reaction channel 1 includes: a material inlet 11 and a material outlet 12;

[0022] The material inlet 11 is located on one side of the upper surface of the reaction channel 1. The side walls of the material inlet 11 are parallel to each other and are connected to the base unit 2. The material is introduced into the base unit 2, and the liquid in the structure 2 leaves the reaction channel from the material outlet 12.

[0023] like Figure 2 As shown, the basic unit 2 includes: a channel 21, a blocking block 22, and a blocking plate 23;

[0024] The basic unit 2 is arranged vertically, and the arrangement of adjacent columns of basic units 2 is opposite. The basic unit 2 and the mixing structure 3 form an S-shaped reaction channel 1, which allows the liquid to flow in an S-shape.

[0025] The channel 21 includes: an inlet 211, a reaction wall 212, and an outlet 213;

[0026] The reaction wall 212 and the blocking block 22 form channel A, the reaction wall 212 and the blocking plate 23 form channel B, and the blocking plates 23 together form channel C.

[0027] The reaction wall 212 is gourd-shaped, wider at the bottom and narrower at the top. Its lower end is the inlet 211, which has a larger volume and a curved wall surface, which helps to reduce the pressure drop when the liquid enters. Its upper end is the outlet 213, from which the liquid leaves the basic unit 2.

[0028] The blocking block 22 is a parallelogram structure with four curved surfaces. It is symmetrically arranged at the inlet 211 and the outlet 213, which provides a certain buffer when the liquid hits the blocking block 22. It diverts the liquid entering from the inlet 211, dividing the liquid into two. The curved surface of the blocking block 22 at the outlet 213 guides the liquid, allowing the liquid to flow more smoothly and thus flow out from the outlet 213.

[0029] The baffle plate 23 has a wave shape with a central convexity, which runs along the channel 21. It has a flow port near the central convexity, and a guide plate 231 is provided at the flow port to guide part of the liquid into the channel B, while the remaining liquid continues to move along the baffle plate 23.

[0030] The liquid in channel A is split at the baffle block 22 and the baffle plate 23, and the two streams of liquid in channel A are divided into four streams. The liquid in channel A enters channels B and C, and the four streams of liquid merge into three streams. Then, a part of the liquid in channel C enters channel B from the guide plate 231 and mixes with the liquid in channel B. The liquid in channel B is impacted by the liquid in channel C, forming multiple turbulences, which is beneficial to the mixing effect of the liquid. At the same time, when the liquid in channel B impacts the outside of the guide plate 231, the reaction wall 212 and the baffle plate 23, the liquid forms turbulence, which is beneficial to the mixing effect of the liquid. The liquid in channel B and the liquid in channel C enter channel A. Finally, the multiple streams of liquid merge into one liquid and enter the next basic unit from the outlet 213.

[0031] like Figure 3 As shown, the mixing structure 3 is olive-shaped, and multiple triangular blocking blocks 31 are equidistantly arranged along the central axis of the mixing structure 3. The mixing structure 3 is inclined and connects two basic units 2, which redirects the liquid in the basic units 2 to complete a redirected flow. The alternating flow channels of the basic units 2 and the mixing structure 3 not only effectively increase the liquid holding capacity of the reaction channel 1, but also further reduce the pressure drop.

[0032] The principle of this utility model:

[0033] Liquid enters the basic unit 2 from the material inlet 11. With the cooperation of the reaction wall 212, the baffle block 22 and the baffle plate 23, the fluid branches. After a process of one fluid splitting into two, two splitting into four, and multiple mixed flows in between, the fluid is then combined into two and four flows before entering the next basic unit 2 and repeating the above process.

[0034] After flowing through a column of basic units 2, the liquid enters the mixing structure 3, and then enters the basic unit 2 again to undergo a process of splitting the fluid into two parts, then into four parts, and then into four parts and two parts, before finally leaving the reaction channel 1 from the material outlet 12, thus completing the reaction process.

Claims

1. A cucurbit microchannel reaction structure comprising: The reaction channel (1), basic unit (2), and mixing structure (3) are characterized in that: basic units (2) are provided between the reaction channels (1), and the upper and lower adjacent basic units (2) are connected by a mixing structure (3). The reaction channel (1) includes: a material inlet (11) and a material outlet (12). The material inlet (11) is located at one end of the reaction channel (1), and the material outlet (12) is located at the other end of the reaction channel (1). The basic unit (2) includes: a channel (21), a blocking block (22), and a blocking plate (23). The channel (21) includes: an inlet (211), a reaction wall (212), and an outlet (213). 13), both the inlet (211) and outlet (213) are equipped with blocking blocks (22) inside the basic unit (2), and a blocking plate (23) is provided between the two sets of blocking blocks (22). The reaction wall (212) and the blocking blocks (22) form channel A, the reaction wall (212) and the blocking plate (23) form channel B, and the blocking plates (23) form channel C. The blocking plate (23) is a wave shape with a raised center, which runs along the channel (21); it has a flow port near the raised center, and a guide plate (231) is provided at the flow port. Multiple triangular blocking blocks (31) are equidistantly arranged on the central axis inside the mixing structure (3).

2. The gourd-shaped microchannel reaction structure according to claim 1, characterized in that: The reaction wall (212) is gourd-shaped, with a larger volume at the bottom and a curved wall surface at the top, while the volume at the top is smaller.

3. The gourd-shaped microchannel reaction structure of claim 1, wherein: The blocking block (22) is a parallelogram structure with four curved surfaces, and is symmetrically arranged at the entrance (211) and the exit (213).

4. The gourd-shaped microchannel reaction structure of claim 1, wherein: The basic unit (2) is set vertically, and the arrangement of adjacent basic units (2) is opposite. The basic unit (2) and the hybrid structure (3) form an S-shaped reaction channel (1).

5. The gourd-shaped microchannel reaction structure of claim 1, wherein: The hybrid structure (3) is olive-shaped and is inclined.

Images