Microreactor heat exchanger
By designing a micro-reaction heat exchanger, hot and cold materials flow counter-currently along different channels. Using corrosion-resistant materials, the problem of poor heat exchange efficiency and blockage in existing heat exchangers is solved, achieving efficient and energy-saving heat exchange.
Patent Information
- Application Number
- CN202423234440.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing heat exchangers suffer from poor heat exchange efficiency and blockage caused by short circuits in cold materials.
Design a micro-reaction heat exchanger, which consists of an upper connecting device, a heat exchange device, and a lower connecting device connected sequentially from top to bottom. The heat exchange device contains multiple stacked heat exchange blocks to form a material channel with a continuous bending structure. Hot and cold materials flow counter-currently along different channels. Graphite or silicon carbide is used to prevent corrosion. Function ports are used for temperature detection and feeding.
It improves heat transfer efficiency, reduces equipment size, extends the residence time of materials in the equipment, ensures long-term stable heat exchange effect, and achieves energy saving.
Smart Images
Figure CN223596651U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of chemical equipment, and specifically provides a microreaction heat exchanger. BACKGROUND
[0002] The heat exchanger is a device for transferring part of the heat of hot fluid to cold fluid, and plays an important role in chemical industry, petroleum industry, power industry, food industry and many other industrial productions.
[0003] The existing heat exchanger has the following defects:
[0004] 1. The structure of the heat exchanger is that the hot material directly flows downward to the outlet through the material hole from the top of the heat exchanger and is discharged, which results in short residence time of the hot material in the device and poor heat exchange effect.
[0005] 2. The structure of the heat exchanger is provided with a baffle, which plays a role in deflecting the cold material. Since there is a large gap between the baffle and the wall of the heat exchanger, the cold material cannot form a deflection inside the heat exchanger and is directly discharged from the outlet along the wall of the heat exchanger, causing a short circuit. At the same time, due to the short circuit phenomenon, the impurities in the water will block the gap for a long time, causing a sharp decline in the heat exchange effect.
[0006] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY
[0007] The utility model aims to solve the above technical problems, i.e., to solve the problem of poor heat exchange effect of the existing heat exchanger.
[0008] In a first aspect, the utility model provides a kind of microreaction heat exchanger, the microreaction heat exchanger includes upper connection device, heat exchange device, lower connection device sequentially connected from top to bottom;The heat exchange device includes shell and the heat exchange component being arranged in the shell, the heat exchange component includes multiple heat exchange blocks being stacked with each other, the placing direction of adjacent heat exchange block is opposite, the first end surface of the heat exchange block is provided with first passageway, the second end surface of the heat exchange block is provided with second passageway, third passageway is arranged between the shell and the heat exchange component, the first passageway and the second passageway are not communicated with each other, multiple first passageways are interconnected and form the first material channel with continuous bending structure, multiple second passageways and the third passageway are interconnected and form the second material channel with continuous bending structure;First material feeding port is provided on the upper connection device, and first material discharge port is provided on the lower connection device, and the first material feeding port and the first material discharge port are communicated with the first material channel respectively;The upper end of the shell is provided with second material discharge port, and the lower end of the shell is provided with second material feeding port, and the second material feeding port and the second material discharge port are communicated with the second material channel respectively.
[0009] In the above specific embodiment of microreaction heat exchanger, the first passageway includes first groove, multiple second grooves and multiple third grooves communicated with each other, the first groove is arranged at the center of the first end surface of the heat exchange block, multiple second grooves are arranged transversely along the circumferential direction of the first groove, and multiple third grooves are arranged longitudinally through the heat exchange block.
[0010] In the above specific embodiment of microreaction heat exchanger, the second passageway includes fourth groove and multiple fifth grooves communicated with each other, the fourth groove is arranged at the center of the second end surface of the heat exchange block, multiple fifth grooves are arranged transversely through the fourth groove along the circumferential direction, and multiple fifth grooves are communicated with the third passageway.
[0011] In the above specific embodiment of microreaction heat exchanger, the fifth groove includes first connecting part and second connecting part, one end of the first connecting part is connected with the fourth groove, the other end of the first connecting part is connected with the second connecting part, and the opening of the first connecting part is smaller than the opening of the second connecting part.
[0012] In the above specific embodiment of microreaction heat exchanger, adjacent heat exchange blocks are arranged in staggered manner to make adjacent fifth grooves in vertical direction not communicated.
[0013] In the above specific embodiment of microreaction heat exchanger, the shell is further provided with functional port communicated with the first material channel, and the functional port is arranged as temperature detection port and / or feeding port.
[0014] In the specific embodiment of the micro-reaction heat exchanger, the first material passage is arranged to be capable of passing through the hot material, and the second material passage is arranged to be capable of passing through the cold material.
[0015] In the specific embodiment of the micro-reaction heat exchanger, the upper connecting device, the lower connecting device and the heat exchange block are all made of graphite or silicon carbide.
[0016] In the case of using the technical scheme, compared with the traditional heat exchanger, the micro-reaction heat exchanger has a smaller overall equipment volume under the premise of having the same heat exchange area. The micro-reaction heat exchanger of the utility model exchanges heat between cold and hot fluids in a reverse flow manner, has a high heat transfer efficiency, and the flow channel flows according to the set route, so that fluid accumulation is avoided, thereby ensuring long-term and stable heat exchange. Moreover, the heat exchange material stays in the equipment for a longer time, so that the heat exchange with water is more sufficient, the required heat exchange area is smaller, the amount of cooling water is reduced, and the purpose of energy saving is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The preferred embodiments of the utility model will be described below in combination with the drawings, in which:
[0018] Figure 1 is a side cross-sectional view of the overall structure of the micro-reaction heat exchanger of the utility model;
[0019] Figure 2 is a top view of the heat exchange block of the utility model;
[0020] Figure 3 is a side cross-sectional view of the heat exchange block of the utility model;
[0021] Figure 4 is a side cross-sectional view of the two heat exchange blocks of the utility model stacked together;
[0022] LIST OF REFERENCE NUMERALS
[0023] 1, upper connecting device; 11, upper cover plate; 12, upper end cover; 13, first material inlet; 2, heat exchange device; 21, shell; 22, heat exchange block; 22-1, upper heat exchange block; 22-2, lower heat exchange block; 221, first passage; 2211, first groove; 2212, second groove; 2213, third groove; 222, second passage; 2221, fourth groove; 2222, fifth groove; 223, third passage; 3, lower connecting device; 31, lower cover plate; 32, lower end cover; 33, first material outlet; 4, second material inlet; 5, second material outlet; 6, function port. DETAILED DESCRIPTION
[0024] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments according to the needs in order to adapt to specific application occasions.
[0025] It should be noted that in the description of the present application, the terms "inner", "center", "transverse", "circumferential" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the related devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the ordinal numbers "first", "second", "third", "fourth", "fifth" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0026] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0027] In addition, it should also be noted that in the description of the present application, although the steps of the control method of the present application are described in a specific order in this application, these orders are not limiting, and those skilled in the art can perform the steps in different orders without deviating from the basic principles of the present application.
[0028] First refer to Figure 1 , which is a side sectional view of the overall structure of the micro-reaction heat exchanger. As shown in Figure 1As shown, the micro-reaction heat exchanger comprises, from top to bottom, an upper connecting device 1, a heat exchange device 2, and a lower connecting device 3. The heat exchange device 2 comprises a shell 21 and a heat exchange assembly arranged in the shell 21. The heat exchange assembly comprises a plurality of heat exchange blocks 22 stacked with each other. The heat exchange blocks 22 are oppositely arranged in the direction of placement between adjacent heat exchange blocks 22. The first end surface of the heat exchange block 22 is provided with a first channel 221, and the second end surface of the heat exchange block 22 is provided with a second channel 222. The shell 21 is provided with a third channel 223 between the heat exchange assembly. The first channel 221 and the second channel 222 are not communicated with each other. The plurality of first channels 221 are communicated with each other to form a first material channel with a continuous bending structure. The plurality of second channels 222 and the third channel 223 are communicated with each other to form a second material channel with a continuous bending structure. The upper connecting device 1 comprises an upper cover plate 11 and an upper head 12. The upper connecting device 1 is provided with a first material feeding port 13. The lower connecting device 3 comprises a lower cover plate 31 and a lower head 32. The lower connecting device 3 is provided with a first material discharging port 33. The first material feeding port 13 and the first material discharging port 33 are respectively communicated with the first material channel. The upper end of the shell 21 is provided with a second material discharging port 5, and the lower end of the shell 21 is provided with a second material feeding port 4. The second material feeding port 4 and the second material discharging port 5 are respectively communicated with the second material channel. As shown in Figure 1 and
[0029] In the above structure, the first material channel and the second material channel are respectively communicated with the corresponding materials and respectively flow along the respective routes, so that the fluid is not accumulated. Meanwhile, the flow paths of the two materials are both serpentine paths, so that the two materials can be more fully contacted, and the volume of the overall device can be reduced, the heat exchange area is increased, and the precision of heat exchange is higher. In addition, the heat exchange between the two materials is interval counter-flow heat exchange, which further improves the heat exchange efficiency, and precise temperature control is realized by controlling the flow of the respective materials in the respective channels, so that precise control of the materials is realized.
[0030] Further, refer to Figure 2 and Figure 3 , which is a structural schematic view of the heat exchange block 22. As shown in Figure 3 , the first end surface of the heat exchange block 22 described below is the upper end surface of the heat exchange block 22, and the second end surface of the heat exchange block 22 described below is the lower end surface of the heat exchange block 22. As shown in Figure 2 and Figure 3As shown, the first channel 221 includes a first groove 2211, a plurality of second grooves 2212 and a plurality of third grooves 2213 which are in communication with each other, the first groove 2211 is arranged at the center of the first end face of the heat exchange block 22, the plurality of second grooves 2212 are arranged transversely along the circumferential direction of the first groove 2211, and the plurality of third grooves 2213 are arranged longitudinally through the heat exchange block 22. Specifically, the first groove 2211 of the heat exchange block 22 at the top of the heat exchange device 2 is in communication with the first material inlet 13, and the first groove 2211 of the heat exchange block 22 at the bottom of the heat exchange device 2 is in communication with the first material outlet 33. Since the arrangement directions of the adjacent heat exchange blocks 22 are opposite, i.e., the third grooves 2213 of the upper heat exchange block 22-1 and the lower heat exchange block 22-2 are in communication with each other (as shown in Figure 4 the specific flow path is that the material flows into the second grooves 2212 through the first grooves 2211 of the upper heat exchange block 22-1 respectively, and then flows into the third grooves 2213 of the lower heat exchange block 22-2, and then converges into the first grooves 2211 of the lower heat exchange block 22-2 through the second grooves 2212 respectively, and repeats accordingly.
[0031] As shown in Figure 2 and Figure 3 the second channel 222 includes a fourth groove 2221 and a plurality of fifth grooves 2222 which are in communication with each other, the fourth groove 2221 is arranged at the center of the second end face of the heat exchange block 22, and the plurality of fifth grooves 2222 are arranged transversely through the heat exchange block 22 along the circumferential direction of the fourth groove 2221, the plurality of fifth grooves 2222 are in communication with the third channel 223, and the adjacent heat exchange blocks 22 are arranged in a staggered manner so that the adjacent fifth grooves 2222 in the vertical direction are not in communication. Specifically, the fifth grooves 2222 and the second grooves 2212 are arranged in a staggered manner in the vertical direction and are not in communication with each other. Based on the above description of the upper heat exchange block 22-1 and the lower heat exchange block 22-2, when the adjacent heat exchange blocks 22 are stacked together, the fourth grooves 2221 of the upper heat exchange block 22-1 and the lower heat exchange block 22-2 are in communication with each other, and since the fifth grooves 2222 of the adjacent heat exchange blocks 22 are not in communication with each other, the material flowing out of the fifth grooves 2222 of the upper heat exchange block 22-1 does not directly flow into the fifth grooves 2222 of the lower heat exchange block 22-2, but first flows into the fifth grooves 2222 of the lower heat exchange block 22-2 through the third channel 223, and then flows into the fourth grooves 2221 of the lower heat exchange block 22-2, thereby achieving the deflection of the material. Exemplarily, the upper heat exchange block 22-1 and the lower heat exchange block 22-2 are relatively staggered by 15 degrees. The specific flow path is that the material first flows into the fifth grooves 2222 of the lower heat exchange block 22-2 through the third channel 223, and then flows into the fourth grooves 2221 of the lower heat exchange block 22-2 and the fourth grooves 2221 of the upper heat exchange block 22-1 in sequence, and then flows into the third channel 223 through the fifth grooves 2222 of the upper heat exchange block 22-1, and repeats accordingly.
[0032] Further, as shown in Figure 2 and Figure 3 Further, the fifth groove body 2222 comprises a first connecting part and a second connecting part, one end of the first connecting part is connected with the fourth groove body 2221, the other end of the first connecting part is connected with the second connecting part, and the opening of the first connecting part is smaller than that of the second connecting part, so as to facilitate the rapid entry of the material into the heat exchange block 22 and avoid the blockage of the port and the influence on the heat exchange effect.
[0033] Further, the first material channel is arranged to be capable of passing the hot material, and the second material channel is arranged to be capable of passing the cold material.
[0034] Further, the upper connecting device 1, the lower connecting device 3 and the heat exchange block 22 are made of graphite material or silicon carbide material. Exemplarily, when the graphite material is used, the heat exchange is suitable for corrosive media such as hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid; when the silicon carbide material is used, the heat exchange is suitable for working conditions of high-concentration sulfuric acid, nitric acid, hydrofluoric acid, mixed acid, sodium hydroxide, bromine-containing and hydrogen bromide gas. The above-mentioned material refers to the hot material of the utility model, and the cold material generally uses cooling water.
[0035] Further, the shell 21 is further provided with a function port 6 which is in communication with the first material channel, and the function port 6 is arranged to be a temperature detection port and / or a feeding port. When the function port 6 is arranged to be a temperature detection port, a temperature detection member is arranged at the temperature detection port, so as to monitor the temperature of the hot material in real time. Exemplarily, the temperature detection member is a temperature sensor. When the function port 6 is arranged to be a feeding port, a small amount of material such as auxiliary material or catalyst can be added.
[0036] Specifically, the main working steps of the micro-reaction heat exchanger are as follows: first, the cold material flows out through the second material outlet 5, and then the hot material flows through the first material channel. Among them, the hot material flows from top to bottom through the first material channel, and the cold material flows from bottom to top through the second material channel.
[0037] The utility model discloses a cold material is passed in first, and then hot material is passed in, to guarantee heat exchange effect, avoid the problem of low efficiency caused by the timely heat exchange because of passing in hot material or cold material and hot material simultaneously.
[0038] Based on the above embodiments and various development embodiments, compared with the conventional heat exchanger, the micro-reaction heat exchanger has smaller overall equipment volume under the premise of having the same heat exchange area.
[0039] Thus, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to the related technical features, and the technical schemes after these changes or replacements will all fall within the protection scope of the utility model.
Claims
1. A micro- reaction heat exchanger, characterized by, The micro-reaction heat exchanger comprises an upper connecting device, a heat exchange device and a lower connecting device connected in sequence from top to bottom; The heat exchange device comprises a shell and a heat exchange assembly arranged in the shell, the heat exchange assembly comprises a plurality of heat exchange blocks stacked with each other, the placement directions of adjacent heat exchange blocks are opposite, a first end surface of the heat exchange block is provided with a first channel, a second end surface of the heat exchange block is provided with a second channel, a third channel is arranged between the shell and the heat exchange assembly, the first channel and the second channel are not communicated with each other, a plurality of first channels are communicated with each other to form a first material channel with a continuous bending structure, a plurality of second channels and the third channel are communicated with each other to form a second material channel with a continuous bending structure; The upper connecting device is provided with a first material feeding port, and the lower connecting device is provided with a first material discharging port, the first material feeding port and the first material discharging port are respectively communicated with the first material channel; The upper end of the shell is provided with a second material discharging port, and the lower end of the shell is provided with a second material feeding port, the second material feeding port and the second material discharging port are respectively communicated with the second material channel.
2. The micro-reaction heat exchanger according to claim 1, characterized in that, The first channel comprises a first groove, a plurality of second grooves and a plurality of third grooves communicated with each other, the first groove is arranged at the center of the first end surface of the heat exchange block, a plurality of second grooves are arranged transversely along the circumferential direction of the first groove, and a plurality of third grooves are arranged longitudinally through the heat exchange block.
3. The micro-reaction heat exchanger according to claim 2, wherein The second channel comprises a fourth groove and a plurality of fifth grooves communicated with each other, the fourth groove is arranged at the center of the second end surface of the heat exchange block, a plurality of fifth grooves are arranged transversely and longitudinally through the fourth groove, and the plurality of fifth grooves are communicated with the third channel.
4. The micro-reaction heat exchanger according to claim 3, wherein The fifth groove comprises a first connecting part and a second connecting part, one end of the first connecting part is connected with the fourth groove, the other end of the first connecting part is connected with the second connecting part, and the opening of the first connecting part is smaller than that of the second connecting part.
5. The micro-reaction heat exchanger according to claim 3 or 4, characterized in that Adjacent heat exchange blocks are arranged in a staggered manner to make adjacent fifth grooves in the vertical direction not communicated.
6. The micro-reaction heat exchanger of claim 1, wherein, The shell is further provided with a functional port communicated with the first material channel, and the functional port is arranged as a temperature detection port and / or a feeding port.
7. The micro-reaction heat exchanger of claim 1, wherein The first material channel is arranged as a channel capable of passing hot materials, and the second material channel is arranged as a channel capable of passing cold materials.
8. The micro-reaction heat exchanger of claim 1, wherein, The upper connecting device, the lower connecting device and the heat exchange block are made of graphite or silicon carbide.