Precise heat exchanger

Abstract

The invention relates to the technical field of chemical equipment, in particular to a precise heat exchanger, and aims at solving the problems that an existing heat exchanger is large in size, heavy in dead weight, poor in heat exchange efficiency, low in medium yield and high in energy consumption. In order to achieve the purpose, the precise heat exchanger comprises an upper connecting device, a heat exchange device and a lower connecting device. The heat exchange device comprises a plurality of heat exchange blocks which are stacked mutually, a plurality of first material grooves are formed in the first end faces of the heat exchange blocks, a plurality of second material grooves are formed in the second end faces of the heat exchange blocks, the first material grooves and the second material grooves are arranged at intervals, and a first connecting hole is vertically formed in one end of each first material groove in a penetrating mode. One end of each second material groove is vertically provided with a first connecting hole in a penetrating manner, so that the multiple first material grooves in the same vertical direction are communicated to form a first material channel, and one end of each second material groove is vertically provided with a second connecting hole in a penetrating manner, so that the multiple second material grooves in the same vertical direction are communicated to form a second material channel. The whole device is small in size and high in heat transfer efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical equipment, and in particular provides a precision heat exchanger. Background Art

[0002] Heat exchangers are devices that transfer part of the heat of a hot fluid to a cold fluid. They play an important role in chemical, petroleum, power, food and many other industrial productions.

[0003] Existing heat exchangers have the following defects:

[0004] 1. The heat exchanger is large in size and heavy in weight. In addition, the structure of the heat exchanger is that the hot material flows directly from the top through the material hole downward to the outlet and is discharged. This results in a short residence time of the hot material in the equipment, poor heat exchange effect, low medium yield and high energy consumption.

[0005] 2. The heat exchanger is equipped with baffles to deflect the cold material. However, due to the large gap between the baffles and the wall of the heat exchanger, the cold material cannot be deflected inside the heat exchanger and is discharged directly from the outlet along the wall of the heat exchanger, causing a short circuit. At the same time, due to the short circuit phenomenon, impurities in the water will block the gap for a long time, causing a sharp decline in heat exchange efficiency.

[0006] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0007] The present invention aims to solve the above technical problems, namely, to solve the problems of large volume, heavy weight, poor heat exchange efficiency, low medium yield and high energy consumption of existing heat exchangers.

[0008] The present invention provides a precision heat exchanger, which comprises an upper connecting device, a heat exchanging device, and a lower connecting device connected in sequence from top to bottom; the heat exchanging device comprises a plurality of heat exchanging blocks stacked on each other, a first end surface of the heat exchanging block is provided with a plurality of first material slots, a second end surface of the heat exchanging block is provided with a plurality of second material slots, the plurality of first material slots and the plurality of second material slots are arranged at intervals, and a first connecting hole is vertically penetrated at one end of each of the first material slots so that the plurality of first material slots in the same vertical direction are connected to form a first material channel with a continuously bent structure, and a vertical penetration is provided at one end of each of the second material slots There is a second connecting hole, so that multiple second material troughs in the same vertical direction are connected to form a second material channel with a continuous bending structure, and the first material channel and the second material channel are configured to enable the material flow directions in their respective channels to be opposite; the upper connecting device is provided with a first port for the first material and a first port for the second material, and the lower connecting device is provided with a second port for the first material and a second port for the second material, the first port for the first material and the second port for the first material are respectively connected to the first material channel, and the first port for the second material and the second port for the second material are respectively connected to the second material channel.

[0009] In a specific embodiment of the above-mentioned precision heat exchanger, adjacent heat exchange blocks are placed in the same direction.

[0010] In a specific embodiment of the above-mentioned precision heat exchanger, adjacent heat exchange blocks are placed in opposite directions.

[0011] In a specific embodiment of the above-mentioned precision heat exchanger, the wall thickness a between the adjacent first material slots and the second heat exchange slots on the same heat exchange block is set to 3 mm.

[0012] In a specific embodiment of the above-mentioned precision heat exchanger, a sealing member is provided between adjacent heat exchange blocks.

[0013] In a specific embodiment of the above-mentioned precision heat exchanger, the first port of the first material is set as the first material feed port, the second port of the first material is set as the first material discharge port, the first port of the second material is set as the second material feed port, and the second port of the second material is set as the second material discharge port.

[0014] In a specific embodiment of the above-mentioned precision heat exchanger, the first port of the first material is set as the first material feed port, the second port of the first material is set as the first material discharge port, the first port of the second material is set as the second material discharge port, and the second port of the second material is set as the second material feed port.

[0015] In a specific embodiment of the above-mentioned precision heat exchanger, the first material channel is provided with a first functional port connected thereto, and the first functional port is configured as a temperature detection port and / or a feeding port.

[0016] In a specific embodiment of the above-mentioned precision heat exchanger, the second material channel is provided with a second functional port connected thereto, and the second functional port is configured as a temperature detection port and / or a feeding port.

[0017] In a specific embodiment of the above-mentioned precision heat exchanger, the upper connecting device, the lower connecting device and the heat exchange block are all made of graphite or silicon carbide.

[0018] The beneficial effects of the precision heat exchanger of the present invention are specifically as follows:

[0019] 1. Compared with traditional heat exchangers, under the premise of having the same heat exchange area, the overall equipment volume of the precision heat exchanger of the present invention is smaller and lighter.

[0020] 2. By utilizing intermittent countercurrent heat exchange between the hot and cold fluids, heat transfer efficiency is high. Simultaneously, the flow path follows a set path, preventing fluid accumulation and ensuring long-term, stable heat exchange. Furthermore, the heat between the hot and cold materials is fully utilized for heat exchange, eliminating the need for separate heat exchange operations, thus achieving energy savings. Compared to traditional heat exchangers, this system offers high heat exchange efficiency, high media yield, and low energy consumption.

[0021] 3. The heat exchange block adopts the method of slotting on the upper and lower end surfaces respectively, which is used for heat exchange between hot and cold materials. The gap between adjacent material slots is small, and the heat transfer effect is good, which makes the heat transfer efficiency between materials higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 is a side sectional view of an embodiment of the overall structure of a precision heat exchanger of the present invention;

[0024] Figure 2 It is a side sectional view of another embodiment of the overall structure of the precision heat exchanger of the present invention;

[0025] Figure 3 is a side sectional view of an embodiment of a heat exchange block in a precision heat exchanger of the present invention;

[0026] Figure 4 is a top cross-sectional view of an embodiment of a heat exchange block in a precision heat exchanger of the present invention;

[0027] Among them: 1. Upper connecting device; 11. Upper cover plate; 12. Upper head; 13. First port for the first material; 14. First port for the second material; 2. Heat exchange block; 21. First material trough; 211. First connecting hole; 22. Second material trough; 221. Second connecting hole; 3. Lower connecting device; 31. Lower cover plate; 32. Lower head; 33. Second port for the first material; 34. Second port for the second material; 4. First functional port; 5. Second functional port. DETAILED DESCRIPTION

[0028] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are intended only to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art may adjust these embodiments as needed to suit specific applications.

[0029] It should be noted that, in the description of the present invention, terms such as "upper," "lower," and "vertical" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are used solely for ease of description and are not intended to indicate or imply that the relevant devices or components must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, ordinal numbers such as "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] like Figure 1 、 Figure 2 and Figure 3As shown, the precision heat exchanger includes an upper connecting device 1, a heat exchange device, and a lower connecting device 3, connected sequentially from top to bottom. The heat exchange device includes a plurality of stacked heat exchange blocks 2. A first end surface of each heat exchange block 2 is provided with a plurality of first material slots 21, and a second end surface of each heat exchange block 2 is provided with a plurality of second material slots 22. The plurality of first material slots 21 and the plurality of second material slots 22 are arranged alternately. A first connecting hole 211 is vertically provided through one end of each first material slot 21, so that the plurality of first material slots 21 in the same vertical direction are connected to form a first material channel having a continuously curved structure. A second connecting hole 221 is vertically provided through one end of each second material slot 22, so that the plurality of second material slots 22 in the same vertical direction are connected to form a second material channel having a continuously curved structure. The first connecting hole 211 and the second connecting hole 221 of the same heat exchange block 2 are arranged on the same side, while the first connecting hole 211 and the second connecting hole 221 of adjacent heat exchange blocks 2 are arranged on different sides, so that the material in the first material channel and the material in the second material channel flow in opposite directions. The first end face of the heat exchange block 2 is Figure 1 The upper end face of the heat exchange block 2 shown in FIG, the second end face of the heat exchange block 2 refers to Figure 1 The lower end surface of the heat exchange block 2 shown in FIG.

[0032] It should be noted that, although the above description is based on the first connecting hole 211 and the second connecting hole 221 being arranged on the same side, this is not restrictive. Those skilled in the art can also arrange the first connecting hole 211 and the second connecting hole 221 on different sides, as long as the structure is combined with the overall heat exchange so that the flow directions of the material in the first material channel and the material in the second material channel are opposite.

[0033] Continue as Figure 1As shown, the upper connecting device 1 includes an upper cover plate 11 and an upper head 12. The upper connecting device 1 is provided with a first port 13 for the first material and a first port 14 for the second material. The lower connecting device 3 includes a lower cover plate 31 and a lower head 32. The lower connecting device 3 is provided with a second port 33 for the first material and a second port 34 for the second material. The first port 13 for the first material and the second port 33 for the first material are respectively connected to the first material channel, and the first port 14 for the second material and the second port 34 for the second material are respectively connected to the second material channel. The upper head 12 is provided with a plurality of first and second channels arranged at intervals, and the channels are not connected to each other. Among them, the plurality of first channels correspond one-to-one with and are connected to the plurality of first material troughs 21, the plurality of first channels are connected to the first port 13 for the first material, the plurality of second channels correspond one-to-one with and are connected to the plurality of second material troughs 22, and the plurality of second channels are connected to the first port 14 for the second material. A plurality of third channels and fourth channels are arranged at intervals in the lower head 32, and the channels are not connected to each other. The plurality of third channels correspond one-to-one to and are connected to the plurality of first material troughs 21, and the plurality of third channels are connected to the second port 33 of the first material. The plurality of fourth channels correspond one-to-one to and are connected to the plurality of second material troughs 22, and the plurality of fourth channels are connected to the second port 34 of the second material.

[0034] Continue as Figure 1 As shown, the first port 13 of the first material is configured as the first material feed port, the second port 33 of the first material is configured as the first material discharge port, the first port 14 of the second material is configured as the second material feed port, and the second port 34 of the second material is configured as the second material discharge port. It should be noted that in addition to the above description of the first port 13 and the second port 33 of the first material, and the first port 14 and the second port 34 of the second material, the first port 13 of the first material can be configured as the first material feed port, the second port 33 of the first material can be configured as the first material discharge port, the first port 14 of the second material can be configured as the second material discharge port, and the second port 34 of the second material can be configured as the second material feed port. In other words, in a precision heat exchanger, the first and second materials can both enter from the top and exit from the bottom, or the first material can enter from the top and exit from the bottom, and the second material can enter from the bottom and exit from the top. The present invention does not limit this. As long as the first and second materials flow in opposite directions within their respective material channels, such adjustments are within the scope of the present invention.

[0035] Furthermore, the first material channel is configured as a channel capable of passing cold material, and the second material channel is configured as a channel capable of passing hot material. It should be noted that although the above description is based on the first material channel being a cold material channel and the second material channel being a hot material channel, this is not restrictive, and those skilled in the art may also make substitutions, i.e., the first material channel may be a hot material channel and the second material channel may be a cold material channel.

[0036] Specifically, combined Figure 1 As shown, the cold material enters the first material channel through the first material inlet and flows out through the first material outlet. The hot material enters the second material channel through the second material inlet and flows out through the second material outlet. The cold and hot materials exchange heat with each other in their respective channels to bring the cold and hot materials to the desired temperatures. For example, after cooling, the hot material can enter a storage tank, and after heating, the cold material can enter a distillation tower for distillation. The specific destination of the materials is determined according to the process requirements.

[0037] In the above structure, the first material channel and the second material channel are respectively fed with corresponding materials, and flow along their respective routes, without causing fluid accumulation. At the same time, the flow paths of the two materials are both serpentine paths, which can enable the two materials to be more fully in contact, and to a certain extent, can reduce the volume of the overall equipment, increase the heat exchange area, and improve the precision of heat exchange. In addition, the heat exchange between the two materials is intermittent countercurrent heat exchange, further improving the heat exchange efficiency, and by controlling the flow rate of each material in its respective channel, precise temperature control is achieved, realizing precise control of the materials.

[0038] Further, if Figure 3 As shown, the heat exchange block 2 features slots spaced apart on its upper and lower surfaces for heat exchange between hot and cold materials. The small gaps between adjacent slots improve heat transfer, resulting in higher efficiency between materials. In some embodiments, the wall thickness a between adjacent first and second slots on the same heat exchange block 2 is set to 3 mm. The total cross-sectional area of ​​the slot openings of all first slots 21 on the same heat exchange block is greater than the cross-sectional area of ​​the first port 13 for the first material, and the total cross-sectional area of ​​the slot openings of all second slots 22 on the same heat exchange block is greater than the cross-sectional area of ​​the first port 14 for the second material.

[0039] Continue as Figure 1 As shown, in one embodiment of the present invention, adjacent heat exchange blocks 2 are placed in the same direction.

[0040] In another embodiment of the present invention, adjacent heat exchange blocks 2 are placed in opposite directions.

[0041] Furthermore, a sealing member is provided between adjacent heat exchange blocks 2. In some embodiments, the sealing member is provided as a fluororubber sealing plate, a polytetrafluoroethylene elastic rope, a perfluoroether sealing plate, and the like.

[0042] Further, if Figure 2 As shown, the first material channel is provided with a first functional port 4 connected thereto, and the first functional port 4 is configured as a temperature detection port and / or a feeding port. The second material channel is provided with a second functional port 5 connected thereto, and the second functional port 5 is configured as a temperature detection port and / or a feeding port. When the functional port is configured as a temperature detection port, a temperature detection component is provided at the temperature detection port for real-time monitoring of the temperature of the hot and cold materials. Exemplarily, the temperature detection component is a temperature sensor. When the functional port is configured as a feeding port, it is used to add small amounts of materials such as auxiliary materials or catalysts.

[0043] Furthermore, the upper connecting device 1, lower connecting device 3, and heat exchange block 2 are all made of graphite or silicon carbide. The graphite is impregnated graphite, and the silicon carbide is pressureless sintered silicon carbide. For example, when graphite is used, it is suitable for heat exchange with corrosive media such as hydrochloric acid, sulfuric acid, acetic acid, and phosphoric acid. When silicon carbide is used, it is suitable for heat exchange with high-concentration sulfuric acid, nitric acid, hydrofluoric acid, mixed acid, sodium hydroxide, and bromine-containing and hydrogen bromide gases.

[0044] In some embodiments, the precision heat exchanger of the present invention can be used as a heating device or as a condensing device. Those skilled in the art will select the corresponding material according to the actual working conditions.

[0045] Based on the above embodiments and various expanded embodiments, the beneficial effects of the precision heat exchanger of the present invention are specifically as follows:

[0046] 1. Compared with traditional heat exchangers, under the premise of having the same heat exchange area, the overall equipment volume of the precision heat exchanger of the present invention is smaller and lighter.

[0047] 2. By utilizing intermittent countercurrent heat exchange between the hot and cold fluids, heat transfer efficiency is high. Simultaneously, the flow path follows a set path, preventing fluid accumulation and ensuring long-term, stable heat exchange. Furthermore, the heat between the hot and cold materials is fully utilized for heat exchange, eliminating the need for separate heat exchange operations, thus achieving energy savings. Compared to traditional heat exchangers, this system offers high heat exchange efficiency, high media yield, and low energy consumption.

[0048] 3. The heat exchange block 2 is slotted at the upper and lower ends for heat exchange between hot and cold materials. The gap between adjacent material slots is small, and the heat transfer effect is good, which makes the heat transfer efficiency between materials higher.

[0049] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A precision heat exchanger, characterized in that: The precision heat exchanger includes an upper connecting device, a heat exchange device, and a lower connecting device connected in sequence from top to bottom; The heat exchange device includes a plurality of heat exchange blocks stacked on each other, a first end surface of the heat exchange block is provided with a plurality of first material slots, a second end surface of the heat exchange block is provided with a plurality of second material slots, the plurality of first material slots and the plurality of second material slots are arranged at intervals, a first connecting hole is vertically penetrated at one end of each of the first material slots, so that the plurality of first material slots in the same vertical direction are connected to form a first material channel with a continuously bent structure, a second connecting hole is vertically penetrated at one end of each of the second material slots, so that the plurality of second material slots in the same vertical direction are connected to form a second material channel with a continuously bent structure, and the first material channel and the second material channel are configured so that the material flow directions in their respective channels are opposite; The upper connecting device is provided with a first port for the first material and a first port for the second material, and the lower connecting device is provided with a second port for the first material and a second port for the second material. The first port for the first material and the second port for the first material are respectively communicated with the first material channel, and the first port for the second material and the second port for the second material are respectively communicated with the second material channel.

2. The precision heat exchanger according to claim 1, characterized in that: The adjacent heat exchange blocks are placed in the same direction.

3. The precision heat exchanger according to claim 1, characterized in that: The adjacent heat exchange blocks are placed in opposite directions.

4. The precision heat exchanger according to claim 1, characterized in that: The wall thickness a between the adjacent first material slots and the second heat exchange slots on the same heat exchange block is set to 3 mm.

5. The precision heat exchanger according to claim 1, characterized in that: A sealing component is provided between adjacent heat exchange blocks.

6. The precision heat exchanger according to claim 1, characterized in that: The first port of the first material is set as the first material feed port, the second port of the first material is set as the first material discharge port, the first port of the second material is set as the second material feed port, and the second port of the second material is set as the second material discharge port.

7. The precision heat exchanger according to claim 1, characterized in that: The first port of the first material is set as the first material feed port, the second port of the first material is set as the first material discharge port, the first port of the second material is set as the second material discharge port, and the second port of the second material is set as the second material feed port.

8. The precision heat exchanger according to claim 1, characterized in that: The first material channel is provided with a first functional port communicating therewith, and the first functional port is configured as a temperature detection port and / or a feeding port.

9. The precision heat exchanger according to claim 1, characterized in that: The second material channel is provided with a second functional port communicating therewith, and the second functional port is configured as a temperature detection port and / or a feeding port.

10. The precision heat exchanger according to claim 1, characterized in that: The upper connecting device, the lower connecting device and the heat exchange block are all made of graphite or silicon carbide.

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