A reactor

Abstract

The utility model relates to the technical fields of reactor for exothermic reaction especially, it relates to a kind of reactor, and reactor includes: heat exchange tube, the inside of heat exchange tube is formed with first fluid channel;Shell, heat exchange tube is set in shell, shell interior is formed with second fluid passage, and second fluid passage is wrapped first fluid channel;Plate body, plate body is equipped with tube hole, heat exchange tube is inserted in tube hole, and the circumferential side of tube hole is equipped with long strip hole, and long strip hole and tube hole are communicated, and the fluid of second fluid passage is circulated through long strip hole.Such setting, the fluid of second fluid passage in shell can flow through long strip hole, reduce the flow dead zone of shell course medium.And the fluid transported through long strip hole has greater flow rate, to flush the surface of heat exchange tube, to break the film boiling generated on the outer wall of heat exchange tube, to improve heat transfer coefficient, promptly remove reaction heat, avoid local over-temperature phenomenon of reactor, reduce overheating risk, improve the protection effect to reactor.

Description

Technical Field

[0001] This invention relates to the technical field of reactors for exothermic reactions, and more particularly to a reactor. Background Technology

[0002] Currently, tubular reactors are widely used, mostly for exothermic reactions. However, the baffle structure of tubular reactors in related technologies results in a flow dead zone in the shell side of the cooling liquid, and film boiling is prone to occur on the outer wall of the heat exchange tubes. This leads to a reduction in the surface heat transfer coefficient, which can cause local overheating in the reactor, posing safety hazards and significant risks to the equipment. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, this utility model provides a reactor.

[0005] In view of this, a reactor is proposed according to an embodiment of this application, comprising:

[0006] The heat exchange tube has a first fluid flow channel formed inside it.

[0007] The shell, the heat exchange tube is disposed inside the shell, and a second fluid channel is formed inside the shell, the second fluid channel enclosing the first fluid channel;

[0008] The plate body has a pipe hole, the heat exchange tube is inserted into the pipe hole, and an elongated hole is opened on the periphery of the pipe hole. The elongated hole and the pipe hole are connected, and the fluid of the second fluid channel flows through the elongated hole.

[0009] The first fluid channel is used to place the catalyst, and the second fluid channel is used to place the coolant.

[0010] In one feasible implementation, a plurality of the aforementioned plates are provided, and the plurality of the aforementioned plates are arranged at intervals along the axial direction of the aforementioned heat exchange tube.

[0011] In one feasible implementation, the outer contour of the plate is fitted to the inner wall of the shell, and a notch is provided on one side of the plate. The notches of adjacent plates are staggered to form a baffle channel for the second fluid channel.

[0012] In one feasible implementation, the elongated hole is arranged parallel to the axis of the heat exchange tube.

[0013] In one feasible implementation, the number of the above-mentioned elongated holes is set to multiple, and they are arranged at intervals around the periphery of the above-mentioned tube holes.

[0014] In one feasible implementation, the heat exchange tube includes a threaded tube or a high-throughput tube.

[0015] In one feasible implementation, the reactor further includes:

[0016] The first tube sheet, one end of the heat exchange tube is inserted into the first tube sheet, and the first tube sheet is connected to one end of the shell;

[0017] The second tube sheet is inserted at the other end of the heat exchange tube and is connected to the other end of the shell.

[0018] In one feasible implementation, the reactor further includes:

[0019] A first tube box is provided on the first tube sheet. The first tube box is provided with a first inlet, through which the medium is supplied to the heat exchange tube.

[0020] The second tube box is located on the second tube sheet. The second tube box is provided with a first output port through which the fluid in the heat exchange tube is output.

[0021] In one feasible implementation, a second inlet is provided on the side of the housing near the second tube box, and a second outlet is provided on the side of the housing near the first tube box; wherein, the coolant flows into the second fluid channel through the second inlet and flows out through the second outlet.

[0022] In one feasible implementation, the reactor further includes:

[0023] The support is located on the outer side wall of the aforementioned shell.

[0024] Compared to existing technologies, this invention offers at least the following advantages: The reactor provided in this application includes a heat exchange tube, a shell, and a plate. The heat exchange tube is housed within the shell, forming a first fluid channel inside the tube and a second fluid channel inside the shell, which encloses the first fluid channel. A catalyst can be placed inside the heat exchange tube, and coolant can be placed inside the shell. After a medium is introduced into the heat exchange tube, the medium and catalyst undergo an exothermic reaction. The heat generated by this reaction is exchanged between the heat exchange tube and the coolant in the shell, ensuring stable reaction. The plate replaces the baffles in related technologies. Specifically, the plate has perforations into which the heat exchange tube is inserted, supporting the tube and ensuring its stable position. Elongated holes are formed around the perforations, connecting to the tubes, allowing coolant in the second fluid channel within the shell to flow through, reducing dead zones in the shell-side medium. Furthermore, the elongated shape allows the fluid transported through the elongated holes to have a high flow velocity, which can scour the surface of the heat exchange tubes, thereby breaking the film boiling generated on the outer wall of the heat exchange tubes, improving the heat transfer coefficient, removing the reaction heat in time, avoiding local overheating of the reactor, reducing the risk of overheating, and improving the protection effect on the reactor. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 A schematic structural diagram of a reactor according to one embodiment of this application;

[0027] Figure 2 This is a schematic structural diagram of a plate body according to one embodiment of the present application.

[0028] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0029] 1 First tube box, 2 First tube sheet, 3 Shell, 4 Heat exchange tube, 5 Plate, 6 Second tube sheet, 7 Second tube box, 8 Tube hole, 9 Long strip hole, 10 Notch. Detailed Implementation

[0030] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0031] like Figure 1 and Figure 2 As shown, according to an embodiment of this application, a reactor is proposed, comprising: a heat exchange tube 4, the interior of which a first fluid flow channel is formed; a shell 3, in which the heat exchange tube 4 is disposed, the interior of which a second fluid channel is formed, the second fluid channel enclosing the first fluid channel; a plate 5, the plate 5 having a pipe hole 8, the heat exchange tube 4 being inserted into the pipe hole 8, and an elongated hole 9 being formed on the periphery of the pipe hole 8, the elongated hole 9 being connected to the pipe hole 8, and fluid in the second fluid channel flowing through the elongated hole 9; wherein, the first fluid channel is used to place a catalyst, and the second fluid channel is used to place a coolant.

[0032] It is understood that the reactor provided in this embodiment includes a heat exchange tube 4, a shell 3, and a plate 5. The heat exchange tube 4 is disposed within the shell 3, forming a first fluid channel inside the tube 4 and a second fluid channel inside the shell 3, which encloses the first fluid channel. A catalyst can be placed inside the heat exchange tube 4, and coolant can be placed inside the shell 3. After the medium is supplied to the heat exchange tube 4, the medium and catalyst undergo an exothermic reaction. The heat generated by the exothermic reaction is exchanged between the heat exchange tube 4 and the coolant in the shell 3 to ensure stable reaction. The plate 5 replaces the baffles in related technologies. Specifically, the plate 5 has a tube hole 8, into which the heat exchange tube 4 is inserted to support it and ensure its stable position. An elongated hole 9 is formed around the tube hole 8, connecting to it. The coolant in the second fluid channel within the shell 3 can flow through the elongated hole 9 to reduce the dead zone of the shell-side medium. Furthermore, due to the shape and structure of the elongated hole 9, the fluid transported through the elongated hole 9 has a large flow velocity, which can scour the surface of the heat exchange tube 4, thereby breaking the film boiling generated on the outer wall of the heat exchange tube 4, improving the heat transfer coefficient, removing the reaction heat in time, avoiding local overheating of the reactor, reducing the risk of overheating, and improving the protection effect of the reactor.

[0033] In some examples, such as Figure 1 and Figure 2 As shown, multiple plates 5 are provided, and the multiple plates 5 are arranged at intervals along the axial direction of the heat exchange tube 4.

[0034] It is understandable that multiple plates 5 can be provided, and these plates 5 can be arranged at intervals along the axial direction of the heat exchange tube 4. This arrangement, on the one hand, improves the support effect of the plates 5 on the heat exchange tube 4, reduces vibration of the heat exchange tube 4, and improves stability; on the other hand, it further reduces the flow dead zone of the shell-side medium; and thirdly, it changes the flow velocity difference of the fluid at multiple points around the axial direction of the heat exchange tube 4, thereby achieving large-area scouring of the heat exchange tube 4, breaking the film boiling generated on the outer wall of the heat exchange tube 4 as much as possible, improving the heat transfer coefficient, removing reaction heat in a timely manner, avoiding local overheating of the reactor, reducing the risk of overheating, and improving the protection effect of the reactor.

[0035] In some examples, such as Figure 1 and Figure 2 As shown, the outer contour of the plate 5 is fitted to the inner wall of the shell 3, and a notch 10 is provided on one side of the plate 5. The notches 10 of adjacent plates 5 are staggered to form a baffle channel for the second fluid channel.

[0036] Understandably, the outer contour of the plate 5 is fitted to the inner wall of the shell 3, and a notch 10 is provided on one side of the plate 5. Multiple plates 5 are spaced apart, with the notches 10 of adjacent plates 5 facing opposite directions, so that the multiple notches 10 are staggered. This arrangement prevents the coolant inside the shell 3 from flowing through the gaps between the plates 5 and the shell 3, instead allowing it to flow through the notches 10, thus achieving flow deflection, increasing the contact area with the heat exchange tubes 4, and improving heat exchange efficiency. Simultaneously, the coolant also flows through the elongated holes 9, effectively reducing film boiling while flushing the heat exchange tubes 4, reducing the flow dead zone of the coolant, improving the heat transfer coefficient, and removing reaction heat in a timely manner to prevent localized overheating of the reactor.

[0037] It should be noted that the notch 10 of the plate 5 is located in the area of ​​the plate 5 where the heat exchange tube 4 is not installed.

[0038] In some examples, such as Figure 1 and Figure 2 As shown, the elongated hole 9 is arranged parallel to the axis of the heat exchange tube 4.

[0039] It is understandable that the elongated hole 9 can be set parallel to the axial direction of the heat exchange tube 4, so that the elongated hole 9 can guide the shell-side fluid medium to better fit the outer wall of the heat exchange tube 4, thereby improving the scouring effect on the outer wall of the heat exchange tube 4, breaking the film boiling generated on the outer wall of the heat exchange tube 4 as much as possible, and improving reliability.

[0040] In some examples, such as Figure 2 As shown, there are multiple elongated holes 9 arranged at intervals around the periphery of the tube holes 8.

[0041] Understandably, multiple elongated holes 9 can be provided, and these holes 9 can be evenly distributed around the periphery of the tube hole 8 to facilitate design and manufacturing. Furthermore, the multiple elongated holes 9 collectively change the shell-side fluid velocity at the outer wall of the heat exchange tube 4, thereby improving the scouring effect on the outer wall of the heat exchange tube 4, minimizing film boiling generated on the outer wall of the heat exchange tube 4, and improving reliability.

[0042] For example, each pipe hole 8 may have three corresponding elongated holes 9, and the included angle between any two adjacent elongated holes 9 is 60°. The cross-section of the elongated hole 9 can be selected from various shapes, such as rectangles, when projected along the axial direction of the pipe hole 8.

[0043] In some examples, the heat exchange tube 4 described above includes a threaded tube or a high-throughput tube.

[0044] Understandably, heat exchange tube 4 can be made of threaded tube or high-flux tube to effectively reduce film boiling, while improving the heat transfer coefficient, avoiding local overheating in the reactor, reducing the risk of overheating, and improving the protection effect on the reactor.

[0045] In some examples, such as Figure 1 As shown, the reactor further includes: a first tube sheet 2, one end of the heat exchange tube 4 is inserted into the first tube sheet 2, and the first tube sheet 2 is connected to one end of the shell 3; and a second tube sheet 6, the other end of the heat exchange tube 4 is inserted into the second tube sheet 6, and the second tube sheet 6 is connected to the other end of the shell 3.

[0046] Understandably, the reactor may also be equipped with a first tube sheet 2 and a second tube sheet 6. Specifically, one end of the heat exchange tube 4 is inserted into the first tube sheet 2, and the other end of the heat exchange tube 4 is inserted into the second tube sheet 6, so as to fix the heat exchange tube 4 through the first tube sheet 2 and the second tube sheet 6, thereby improving stability. The first tube sheet 2 is connected to one end of the shell 3, and the second tube sheet 6 is connected to the other end of the shell 3.

[0047] In some examples, such as Figure 1 As shown, the reactor further includes: a first tube box 1, disposed on the first tube sheet 2, the first tube box 1 having a first inlet for conveying the medium to the heat exchange tube 4 through the first inlet; and a second tube box 7, disposed on the second tube sheet 6 for conveying the medium, the second tube box 7 having a first outlet for discharging the fluid in the heat exchange tube 4 through the first outlet.

[0048] It is understood that the reactor may also be equipped with a first tube box 1 and a second tube box 7. Specifically, the first tube box 1 is located on the first tube sheet 2, with a first inlet at the top, and the second tube box 7 is located on the second tube sheet 6, with a first outlet at the bottom. This arrangement allows the medium to be supplied to the heat exchange tube 4 through the first inlet, enabling an exothermic reaction between the medium and the catalyst in the heat exchange tube 4, and the fluid in the heat exchange tube 4 to be discharged through the first outlet. This ensures that the fluid in the first fluid channel flows from the first tube box 1 to the second tube box 7.

[0049] In some examples, such as Figure 1 As shown, a second inlet is provided on the side of the housing 3 near the second tube box 7, and a second outlet is provided on the side of the housing 3 near the first tube box 1; wherein, the coolant flows into the second fluid channel through the second inlet and flows out through the second outlet.

[0050] Understandably, a second inlet is provided on the side of the shell 3 near the second tube box 7, and a second outlet is provided on the side of the shell 3 near the first tube box 1. Coolant can flow into the second fluid channel through the second inlet, bend through multiple notches 10, and flow to the second outlet through the elongated hole 9. This arrangement ensures that the flow direction of the coolant is opposite to the flow direction of the fluid in the heat exchange tube 4, increasing the contact area with the heat exchange tube 4 and improving heat exchange efficiency. Simultaneously, the coolant also flows through the elongated hole 9, effectively reducing film boiling by flushing the heat exchange tube 4, while also reducing the dead zone of the coolant flow, thereby improving the heat transfer coefficient, removing reaction heat in a timely manner, and preventing localized overheating of the reactor.

[0051] In some examples, such as Figure 1 As shown, the reactor also includes a support, which is disposed on the outer side wall of the shell 3.

[0052] Understandably, the reactor is also equipped with supports. Specifically, the supports are located on the outer wall of the shell 3 to facilitate reactor installation and improve stability.

[0053] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0054] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0055] It should be understood that in the description of this utility model, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0058] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0059] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0060] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A reactor, characterized in that, include: A heat exchange tube, wherein a first fluid channel is formed inside the heat exchange tube; The shell, the heat exchange tube is disposed inside the shell, and a second fluid channel is formed inside the shell, the second fluid channel enclosing the first fluid channel; The plate has a pipe hole, the heat exchange tube is inserted into the pipe hole, and an elongated hole is opened on the periphery of the pipe hole. The elongated hole is connected to the pipe hole, and the fluid of the second fluid channel flows through the elongated hole. The first fluid channel is used to place the catalyst, and the second fluid channel is used to place the coolant.

2. The reactor according to claim 1, characterized in that, The plate body is provided in multiple ways, and the multiple plates body are arranged at intervals along the axial direction of the heat exchange tube.

3. The reactor according to claim 2, characterized in that, The outer contour of the plate is fitted to the inner wall of the shell, and a notch is provided on one side of the plate. The notches of adjacent plates are staggered to form a baffle channel for the second fluid channel.

4. The reactor according to claim 1, characterized in that, The elongated hole is arranged parallel to the axis of the heat exchange tube.

5. The reactor according to claim 1, characterized in that, The number of elongated holes is set to multiple, and they are arranged at intervals around the periphery of the tube hole.

6. The reactor according to claim 1, characterized in that, The heat exchange tubes include threaded tubes or high-throughput tubes.

7. The reactor according to claim 1, characterized in that, Also includes: The first tube sheet, one end of the heat exchange tube is inserted into the first tube sheet, and the first tube sheet is connected to one end of the shell; The second tube sheet is inserted at the other end of the heat exchange tube, and the second tube sheet is connected to the other end of the shell.

8. The reactor according to claim 7, characterized in that, Also includes: A first tube box is provided on the first tube sheet. The first tube box is provided with a first inlet, through which the medium is delivered to the heat exchange tube. The second tube box is located on the second tube sheet and has a first output port through which the fluid in the heat exchange tube is output.

9. The reactor according to claim 8, characterized in that, A second inlet is provided on the side of the housing near the second tube box, and a second outlet is provided on the side of the housing near the first tube box; wherein, the coolant flows into the second fluid channel through the second inlet and flows out through the second outlet.

10. The reactor according to any one of claims 1 to 9, characterized in that, Also includes: A support is provided on the outer wall of the housing.

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