Novel heat exchange system

Abstract

This utility model discloses a novel heat exchange system, belonging to the field of methanol-to-hydrogen technology. The novel heat exchange system mainly includes a shell, a raw material channel, and a gaseous heat medium conveying mechanism. The shell has an internal heat exchange chamber; the shell has a side wall with a raw material channel that communicates with the outside of the shell; the gaseous heat medium conveying mechanism includes a first guide channel and a second guide channel. The first guide channel is located within the heat exchange chamber and communicates with the outside of the shell; the second guide channel is also located within the heat exchange chamber and communicates with the outside of the shell; a first spiral gas pipe connects the second guide channel and the first guide channel, and the first spiral gas pipe is located within the heat exchange chamber. Compared with existing technologies, this utility model increases the heat exchange time between the gaseous heat medium and the raw material, improves heat exchange efficiency, and reduces preheating energy consumption to a certain extent, thus possessing high practicality.

Description

Technical Field

[0001] This utility model relates to the field of methanol-to-hydrogen technology, and in particular to a novel heat exchange system. Background Technology

[0002] In the methanol-to-hydrogen process, the feedstock (methanol-deionized water mixture) needs to undergo two heat treatment steps: first, it is preheated through a heat exchange system, and then it enters a vaporization superheating system to complete the vaporization and superheating operations.

[0003] However, the design of traditional heat exchange systems has the following shortcomings: traditional heat exchange systems mostly adopt simple straight pipe structures or simple spiral structures. Such structures generally shorten the residence time of gaseous heat medium in the heat exchange system, and the heat exchange efficiency is generally low. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a novel heat exchange system, primarily comprising a shell, a raw material channel, and a gaseous heat medium conveying mechanism. In use, the first spiral pipe in the gaseous heat medium conveying mechanism, through its spiral winding structure, extends the flow path of the gaseous heat medium within the limited space of the shell; simultaneously, it also prolongs the residence time of the gaseous heat medium in the heat exchange system. Compared to existing technologies, this invention increases the heat exchange time between the gaseous heat medium and the raw material, improves heat exchange efficiency, and reduces preheating energy consumption to a certain extent; therefore, it possesses high practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The new heat exchange system includes: The shell has a heat exchange chamber inside it; A raw material channel is provided on the side wall of the housing and communicates with the outside of the housing; A gaseous heat medium transport mechanism includes: A first guide channel is provided in the heat exchange chamber and is connected to the outside of the shell. The second guide channel is opened in the heat exchange chamber and is connected to the outside of the shell; The first spiral air tube connects directly or indirectly to the first guide channel and the second guide channel; wherein the first spiral air tube is located in the heat exchange chamber.

[0006] Furthermore, the gaseous heat medium conveying mechanism also includes: Second spiral endotracheal tube; One end of the second spiral tube is directly or indirectly connected to one end of the first spiral tube, and the other end of the second spiral tube is connected to the second guide channel.

[0007] Furthermore, the gaseous heat medium conveying mechanism also includes: Arc-shaped trachea; The arc-shaped air tube is disposed between the first spiral air tube and the second spiral air tube, and is used to connect the first spiral air tube and the second spiral air tube.

[0008] Furthermore, the gaseous heat medium conveying mechanism also includes: Connecting chambers; The connecting chamber is located in the heat exchange chamber, with one side connected to the first guide channel and the other side connected to the first spiral air tube.

[0009] Furthermore, The number of the second guidance channels is at least two sets; The number of the first spiral air tubes is at least two sets, and the number of the first spiral air tubes is the same as the number of the second guide channels.

[0010] Furthermore, The raw material channel is located below the second guide channel; and / or The raw material channel extends toward the outside of the shell.

[0011] Furthermore, the position of the feed end of the raw material channel is no higher than 1 / 4 of the height of the shell.

[0012] Furthermore, this novel heat exchange system also includes: A temperature sensor is installed on the inner wall of the gaseous heat medium conveying mechanism.

[0013] Furthermore, the temperature sensor is disposed on the inner wall of the first guide channel, and the temperature sensor is far away from the heat exchange chamber.

[0014] The beneficial effects of this utility model are: The novel heat exchange system provided by this utility model is equipped with a first spiral gas pipe, which can guide the gaseous heat medium in the first guide channel to the second guide channel. In this process, the first spiral gas pipe can extend the flow path of the gaseous heat medium in the limited space of the shell through the spiral winding structure. At the same time, it also extends the residence time of the gaseous heat medium in the heat exchange system, thereby increasing the heat exchange time between the gaseous heat medium and the raw material, thus improving the heat exchange efficiency and reducing the preheating energy consumption to a certain extent. Attached Figure Description

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

[0016] Figure label: 1. Shell; 11. Heat exchange chamber; 12. Seals; 2. Gaseous heat medium conveying mechanism; 21. First guide channel; 22. Connecting chamber; 23. First spiral air tube; 24. Arc-shaped air tube; 25. Second spiral air tube; 26. Second guide channel; 3. Raw material channel; 4. Steam passage; 5. Temperature sensor; A1, First direction; B1, Second direction. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] As attached Figure 1 As shown, this embodiment discloses a novel heat exchange system for extending the residence time of a gaseous heat medium within the system. It mainly includes a shell 1, a raw material channel 3, and a gaseous heat medium conveying mechanism 2. Specifically, the side wall of the shell 1 is provided with a raw material channel 3, which is used to introduce the raw material that needs to be preheated into the heat exchange chamber 11 of the shell 1. The gaseous heat medium conveying mechanism 2 is provided with a first guide channel 21 and a second guide channel 26, which are spaced apart in the heat exchange chamber 11. The first guide channel 21 and the second guide channel 26 are connected to the outside. A first spiral air pipe 23 is provided between the first guide channel 21 and the second guide channel 26. The first spiral air pipe 23 is located in the heat exchange chamber 11 and can guide the gaseous heat medium in the first guide channel 21 to the second guide channel 26. In this process, the first spiral air pipe 23 can extend the flow path of the gaseous heat medium in the limited space of the shell 1 through the spiral winding structure. At the same time, it also extends the residence time of the gaseous heat medium in the heat exchange system, thereby increasing the heat exchange time between the gaseous heat medium and the raw material, thereby improving the heat exchange efficiency and reducing the preheating energy consumption to a certain extent.

[0019] In use, the operator guides the raw material requiring preheating through the raw material channel 3 into the heat exchange chamber 11. Then, the external gaseous heat medium is introduced through the first guide channel 21 into the gaseous heat medium conveying mechanism 2. This gaseous heat medium can move from the first guide channel 21 to the first spiral air tube 23. During this process, the gaseous heat medium moves along the first direction A1, that is, from the first guide channel 21 and the first spiral air tube 23 to the second guide channel 26. Then, the gaseous heat medium moves from the second guide channel 26 to the outside of the shell 1. The first spiral air tube 23 extends the flow path of the gaseous heat medium in the limited space of the shell 1 through its spiral winding structure. At the same time, it also extends the residence time of the gaseous heat medium in the heat exchange system, thereby increasing the heat exchange time between the gaseous heat medium and the raw material, thus improving the heat exchange efficiency and reducing the preheating energy consumption to a certain extent. Furthermore, the heat of the gaseous heat medium can act on the raw material through the outer wall of the gaseous heat medium conveying mechanism 2, thereby achieving the purpose of preheating the raw material. Of course, in practice, the staff can also introduce the external gaseous heat medium into the heat exchange chamber 11 through the second guide channel 26; correspondingly, the gaseous heat medium moves to the outside through the first spiral pipe 23 and the first guide channel 21, which can also achieve the purpose of preheating the raw materials.

[0020] Typically, the gaseous heat medium used in this embodiment is a mixed gas produced by a converter (not shown in the figure). The converter receives the substance from the vaporization superheater and reacts the H2O (water vapor) in this substance with CO to generate a mixed gas (mainly composed of H2 and CO2). This is existing technology, and the relevant details will not be elaborated further. The temperature of this mixed gas is generally in the range of 250℃-300℃. This embodiment utilizes the heat generated by this mixed gas to preheat the raw materials. This design also lowers the temperature of the mixed gas for subsequent H2 and CO2 separation equipment, to a certain extent... This extends the service life of the corresponding separation equipment. Typically, a steam channel 4 is also provided at the top of the shell 1. Furthermore, the boiling point of the demineralized water in the raw material is 100°C, while the temperature of the mixed gas used for heat exchange is much higher than 100°C. Therefore, in this embodiment, water vapor is continuously generated during the preheating of the raw material. This water vapor will move along the second direction B1, that is, leave this embodiment from the heat exchange chamber 11 and the steam channel 4. Then, the operator can guide this water vapor to the converter via an external vaporization superheater. This design can provide the required water vapor for the reforming reaction in the converter, reducing the cost of the reforming reaction to a certain extent. Of course, in specific implementation, the operator can extend the steam channel 4 towards the outside of the shell 1. This design facilitates the guidance of the water vapor generated in this embodiment to other processes.

[0021] The specific structure of this novel heat exchange system is as follows: it includes a shell 1, inside which a heat exchange chamber 11 is formed; a raw material channel 3 is formed on the side wall of the shell 1, and the raw material channel 3 communicates with the outside of the shell 1; a gaseous heat medium conveying mechanism 2 is provided with a first guide channel 21 and a second guide channel 26, the first guide channel 21 being formed inside the heat exchange chamber 11 and communicating with the outside of the shell 1; the second guide channel 26 being formed inside the heat exchange chamber 11 and communicating with the outside of the shell 1, the second guide channel 26 being spaced apart from the first guide channel 21; a first spiral air pipe 23 is connected between the second guide channel 26 and the first guide channel 21, and the first spiral air pipe 23 is located in the heat exchange chamber 11. Compared with the prior art, this utility model increases the heat exchange time between the gaseous heat medium and the raw material, improves the heat exchange efficiency, and reduces preheating energy consumption to a certain extent, thus having high practicality.

[0022] Furthermore, the gaseous heat medium conveying mechanism 2 is also provided with a second spiral air pipe 25; specifically, one end of the second spiral air pipe 25 is directly or indirectly connected to one end of the first spiral air pipe 23, and the other end of the second spiral air pipe 25 is connected to the second guide channel 26. This design further extends the residence time of the gaseous heat medium in the heat exchange system.

[0023] Furthermore, the gaseous heat medium conveying mechanism 2 is also provided with an arc-shaped air pipe 24; specifically, the arc-shaped air pipe 24 is disposed between the first spiral air pipe 23 and the second spiral air pipe 25, and the arc-shaped air pipe 24 is used to connect the first spiral air pipe 23 and the second spiral air pipe 25; wherein, the arc-shaped air pipe 24, through its flexible geometric shape, actively adapts to and absorbs the difference in thermal expansion, avoids stress concentration at key connection parts, and extends the service life of this embodiment to a certain extent.

[0024] Furthermore, the gaseous heat medium conveying mechanism 2 is also provided with a connecting chamber 22; specifically, the connecting chamber 22 is located in the heat exchange chamber 11, one side of the connecting chamber 22 is connected to the first guide channel 21, and the other side of the connecting chamber 22 is connected to the first spiral air pipe 23. This design increases the contact area between the raw material and the gaseous heat medium conveying mechanism 2, and improves the heat exchange efficiency to a certain extent.

[0025] In a specific application scenario, as shown in the appendix Figure 1As shown, the number of the aforementioned second guide channels 26 is at least two sets; the number of the aforementioned first spiral air tubes 23 is at least two sets, and the number of the first spiral air tubes 23 is the same as the number of the second guide channels 26. This design further extends the flow path of the gaseous heat medium within the limited space of the shell 1, thereby improving the heat exchange efficiency. In addition, during implementation, the first guide channel 21 can be extended towards the outside of the shell 1. This design facilitates the guidance of external gaseous heat medium to this embodiment. Of course, the second guide channel 26 can also be connected to the side of the communicating chamber 22. This design can enhance the overall structural stability of this embodiment.

[0026] In a specific application scenario, the raw material channel 3 is located below the second guide channel 26. This design can reduce the impact of the raw material on the first spiral air tube 23, the arc-shaped air tube 24, and the second spiral air tube 25. Of course, considering the impact factor, the staff can set an impact-resistant layer on the outer wall of the first guide channel 21, the connecting chamber 22, and the second guide channel 26. This design can extend the service life of this embodiment to a certain extent.

[0027] In a specific application scenario, the raw material channel 3 extends outward toward the outer side of the shell 1, a design that facilitates the introduction of raw materials into the heat exchange chamber 11 by the staff.

[0028] In a specific application scenario, the position of the feed end of the raw material channel 3 is no higher than 1 / 4 of the height of the shell 1. This design can prevent the raw material from entering the heat exchange chamber 11 and leaving through the steam channel 4 without performing the corresponding preheating operation.

[0029] This embodiment also considers several situations, and the specific solutions are as follows: a sealing element 12 is provided between the first guide channel 21 and the inner wall of the housing 1; a sealing element 12 is provided between the second guide channel 26 and the inner wall of the housing 1; a sealing element 12 is provided between the raw material channel 3 and the inner wall of the housing 1; and a sealing element 12 is provided between the steam channel 4 and the inner wall of the housing 1. That is, five sets of sealing elements 12 are provided in this embodiment (because there are two sets of second guide channels 26 in this embodiment, a set of sealing elements 12 is provided between each set of first guide channels 26 and the inner wall of the housing). This design can improve the sealing performance of this embodiment. A temperature sensor 5 is provided on the inner wall of the gaseous heat medium conveying mechanism 2. This design allows the operator to obtain the temperature of the gaseous heat medium in real time through an external electronic device (not shown in the figure). Of course, the operator can also place the temperature sensor 5 on the inner wall of the first guide channel 21, and keep the temperature sensor 5 away from the heat exchange chamber 11. This design allows the temperature sensor 5 to accurately obtain the temperature of the current gaseous heat medium. If the temperature sensor 5 is placed inside the heat exchange chamber 11, the temperature of the gaseous heat medium may decrease due to the influence of the raw materials before the temperature sensor 5 comes into contact with it. Therefore, the temperature sensor 5 cannot accurately measure the actual temperature of the current gaseous heat medium, which may prevent the operator from knowing the following information in a timely manner: the specific time when the first guide channel 21 receives gaseous heat medium exceeding its capacity. In addition, the operator can set a temperature detector (not shown in the figure) on the inner wall of the heat exchange chamber 11, that is, the temperature of the raw materials in the heat exchange chamber 11 can be obtained in real time through the temperature detector via an external electronic device. If the gaseous heat medium previously introduced into this embodiment has not preheated the raw materials to the required temperature for a long time, the operator can change the supply source of the gaseous heat medium in this embodiment, and then introduce the gaseous heat medium with a higher temperature into this embodiment, which improves work efficiency to a certain extent. If the operator considers that the raw materials may affect the circuit in the temperature detector, a waterproof layer can be set on the outer wall of the temperature detector.

[0030] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used in this invention may also include the plural forms. It should be further understood that the term “comprising” as used in this invention means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

Claims

1. A novel heat exchange system, characterized by, include: The shell (1) has a heat exchange chamber (11) inside it; The raw material channel (3) is opened on the side wall of the shell (1) and communicates with the outside of the shell (1); The gaseous heat medium conveying mechanism (2) includes: The first guide channel (21) is opened in the heat exchange chamber (11) and the first guide channel (21) is connected to the outside of the shell (1); The second guide channel (26) is opened in the heat exchange chamber (11), and the second guide channel (26) is connected to the outside of the shell (1); The first spiral air tube (23) is directly or indirectly connected to the first guide channel (21) and the second guide channel (26); wherein the first spiral air tube (23) is located in the heat exchange chamber (11).

2. The novel heat exchange system according to claim 1, characterized in that, The gaseous heat medium conveying mechanism (2) further includes: Second spiral endotracheal tube (25); One end of the second spiral tube (25) is directly or indirectly connected to one end of the first spiral tube (23), and the other end of the second spiral tube (25) is connected to the second guide channel (26).

3. The novel heat exchange system according to claim 2, characterized in that, The gaseous heat medium conveying mechanism (2) further includes: Arc-shaped trachea (24); The arc-shaped air tube (24) is disposed between the first spiral air tube (23) and the second spiral air tube (25) for connecting the first spiral air tube (23) and the second spiral air tube (25).

4. The novel heat exchange system according to any one of claims 1-3, characterized in that, The gaseous heat medium conveying mechanism (2) further includes: Connecting chamber (22); The connecting chamber (22) is located in the heat exchange chamber (11), with one side connected to the first guide channel (21) and the other side connected to the first spiral air tube (23).

5. The novel heat exchange system according to claim 4, characterized in that: The number of the second guide channels (26) is at least two sets; The number of the first spiral tubes (23) is at least two sets, and the number of the first spiral tubes (23) is the same as the number of the second guide channels (26).

6. The novel heat exchange system according to claim 1, characterized in that: The raw material channel (3) is located below the second guide channel (26); and / or The raw material channel (3) extends toward the outside of the shell (1).

7. The novel heat exchange system according to claim 1, wherein The position of the feed end of the raw material channel (3) is not higher than 1 / 4 of the height of the shell (1).

8. The novel heat exchange system according to claim 1, wherein Also includes: A temperature sensor (5) is disposed on the inner wall of the gaseous heat medium conveying mechanism (2).

9. The novel heat exchange system according to claim 8, characterized in that, The temperature sensor (5) is disposed on the inner wall of the first guide channel (21), and the temperature sensor (5) is far away from the heat exchange chamber (11).

Images