Tubular reactor

Abstract

The invention relates to the technical field of micro-channel reactors, in particular to a tubular reactor. The tubular reactor comprises a tubular shell, a feeding pipe and at least one laminated mixing unit; the tubular shell is connected with the feeding pipe and forms a mixing channel together with the feeding pipe, and the laminated mixing unit is arranged in the mixing channel; the feed pipe is provided with a first feed port and a second feed port which are communicated with the mixing channel, and the tubular shell is provided with a discharge port communicated with the mixing channel; wherein the lamination mixing unit comprises a baffle plate and a plurality of laminations; the baffle plate and the plurality of laminations are stacked in sequence, and a flow guide channel is formed along the stacking direction of the laminations; and each lamination and the adjacent lamination or baffle plate form a plurality of sub-runners, and the plurality of sub-runners are communicated with the flow guide channel. The tubular reactor is simple in structure and convenient to use, can improve the mixing and reaction efficiency, and realizes rapid and uniform mixing.

Description

Technical Field

[0001] This application relates to the field of microchannel reactor technology, and more specifically, to a tubular reactor. Background Technology

[0002] Currently, with the increasing demands for precision, safety, and efficiency in reaction process control in fields such as fine chemicals, pharmaceuticals, and materials synthesis, traditional batch reactors are no longer sufficient to meet the needs of rapid mixing, strong exothermic control, and highly selective reactions. Tubular microchannel reactors, as a typical continuous flow reaction device, have become an important technological pathway for achieving process intensification and intrinsic safety in chemical processes due to their high specific surface area, excellent heat and mass transfer performance, and good process controllability.

[0003] In microchannel reactors, fluid flow is typically laminar, and mixing relies mainly on molecular diffusion, limiting mixing efficiency, especially in high-viscosity or multiphase fluid systems. Therefore, achieving rapid and uniform mixing within a microscale space has become a key technical challenge for improving reaction efficiency. Summary of the Invention

[0004] This application provides a tubular reactor to improve the above-mentioned problems.

[0005] The present invention is as follows: A tubular reactor includes a tubular shell, a feed pipe, and at least one laminated mixing unit; the tubular shell is connected to the feed pipe and together form a mixing channel, and the laminated mixing unit is placed inside the mixing channel; the feed pipe is provided with a first inlet and a second inlet communicating with the mixing channel, and the tubular shell is provided with an outlet communicating with the mixing channel; The stacked mixing unit includes a baffle and multiple stacked plates; the baffle and multiple stacked plates are stacked sequentially and have flow channels formed along their stacking direction; each stacked plate forms multiple sub-flow channels with adjacent stacked plates or baffles, and the multiple sub-flow channels are all connected to the flow channels.

[0006] In one embodiment of the present invention, the baffle is provided with a first guide hole and a plurality of second guide holes, the first guide hole being located at the center of the baffle, and the plurality of second guide holes being arranged around the center line of the baffle; the stacked sheet is provided with a third guide hole and a plurality of fourth guide holes, the third guide hole being located at the center of the stacked sheet, and the plurality of fourth guide holes being arranged around the center line of the stacked sheet; Along the stacking direction of the baffle and the stacked plates, the first guide hole and the third guide hole are connected in sequence to form the first guide channel, and the second guide hole and the fourth guide hole are connected in sequence to form the second guide channel; The second flow channel is connected to the first flow channel through a sub-flow channel.

[0007] In an embodiment of the present application, each of the laminates is provided with a plurality of flow guide grooves, each of the flow guide grooves corresponds to a fourth flow guide hole, and each of the flow guide grooves communicates the corresponding fourth flow guide hole with the third flow guide hole. Each of the flow guide grooves forms a sub-flow channel with the adjacent laminate or baffle.

[0008] In an embodiment of the present application, the plurality of flow guide grooves are arranged at intervals around the center line of the laminate, and each of the flow guide grooves extends in a curved manner.

[0009] In an embodiment of the present application, at least part of the flow guide grooves on the adjacent two laminates are communicated in the stacking direction of the baffle and the laminates.

[0010] In an embodiment of the present application, the center lines of the adjacent two laminates coincide in the stacking direction of the baffle and the laminates, and the flow guide grooves on the adjacent two laminates are arranged at an angle with respect to the center lines.

[0011] In an embodiment of the present application, the baffle is provided with at least one first positioning hole around the center line thereof, and the second flow guide hole on the same baffle is arranged at intervals with the first positioning hole. The laminate is provided with at least one second positioning hole around the center line thereof, and the fourth flow guide hole on the same laminate is arranged at intervals with the second positioning hole. In the stacking direction of the baffle and the laminates, the first positioning hole and the second positioning hole are sequentially communicated to cooperate with the positioning member.

[0012] In an embodiment of the present application, the tubular reactor comprises a plurality of laminate mixing units, and the plurality of laminate mixing units are located in the feed pipe, and the plurality of laminate mixing units are sequentially stacked in the extension direction of the mixing channel.

[0013] In an embodiment of the present application, the tubular reactor comprises a spiral disturbance assembly rotatably arranged in the tubular shell; the spiral disturbance assembly comprises a spiral rotating shaft, a spiral blade, and a plurality of blocking members; the spiral blade is connected with the spiral rotating shaft, and the plurality of blocking members are connected with the spiral blade and arranged at intervals.

[0014] In an embodiment of the present application, the tubular shell is further provided with an oil guide cavity, and the tubular shell is provided with an oil inlet and an oil outlet communicated with the oil guide cavity; the oil guide cavity surrounds the mixing channel.

[0015] The present application has the following beneficial effects: The tubular reactor comprises a tubular shell, a feed pipe and at least one laminated mixing unit; the tubular shell is connected with the feed pipe and forms a mixing channel together, and the laminated mixing unit is arranged in the mixing channel; the feed pipe is provided with a first feed port and a second feed port which are communicated with the mixing channel, and the tubular shell is provided with a discharge port which is communicated with the mixing channel; wherein the laminated mixing unit comprises a baffle and a plurality of laminated plates; the baffle and the plurality of laminated plates are arranged in sequence and are formed with a flow guide channel along the laminated direction; each laminated plate is formed with a plurality of sub-flow channels with the adjacent laminated plate or the baffle, and the plurality of sub-flow channels are communicated with the flow guide channel. The tubular reactor has simple structure and is convenient to use, can improve the mixing and reaction efficiency, and realizes rapid and uniform mixing. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The structural schematic diagram of the tubular reactor provided by the present application is shown in the figure; Figure 2 The cross-sectional view of the tubular reactor provided by the present application is shown in the figure; Figure 3 The structural schematic diagram of the laminated mixing unit from the first perspective provided by the present application is shown in the figure; Figure 4 The structural schematic diagram of the laminated plate of the laminated mixing unit provided by the present application is shown in the figure; Figure 5 The structural schematic diagram of the laminated mixing unit from the second perspective provided by the present application is shown in the figure; Figure 6 The structural schematic diagram of the laminated plate provided by the present application is shown in the figure; Figure 7 The structural schematic diagram of the laminated plate provided by the present application is shown in the figure; Figure 8 The structural schematic diagram of the laminated plate provided by the present application is shown in the figure; Figure 9 The setting schematic diagram of the flow limiting plate provided by the present application is shown in the figure; Figure 10 The structural schematic diagram of the spiral turbulent flow assembly provided by the present application is shown in the figure; Figure 11 The cross-sectional-mixing efficiency diagram of the tubular reactor provided by the present application is shown in the figure; Figure 12 The first use state diagram of the tubular reactor provided by the present application is shown in the figure; Figure 13 A second use state diagram of the tubular reactor provided in the present application; Figure 14 A third use state diagram of the tubular reactor provided in the present application; Figure 15 A fourth use state diagram of the tubular reactor provided in the present application; Figure 16 A fifth use state diagram of the tubular reactor provided in the present application; Figure 17 A sixth use state diagram of the tubular reactor provided in the present application; Figure 18 A seventh use state diagram of the tubular reactor provided in the present application; Figure 19 An eighth use state diagram of the tubular reactor provided in the present application.

[0018] Figure: 100-tubular reactor; 110-tubular shell; 120-feed pipe; 130-lamella mixing unit; 101-mixing channel; 121-first feed port; 122-second feed port; 123-discharge port; 131-baffle; 132-lamella; 133-guiding channel; 134-sub-flow channel; 135-first guiding hole; 136-second guiding hole; 137-third guiding hole; 138-fourth guiding hole; 139-first guiding channel; 141-second guiding channel; 142-guiding groove; 143-first positioning hole; 144-second positioning hole; 145-flow-limiting plate; 150-spiral turbulence assembly; 151-spiral rotating shaft; 152-spiral lamella; 153-obstructive piece; 111-oil guiding cavity; 112-oil inlet; 113-oil outlet. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Please refer to Figures 1-5 This embodiment provides a tubular reactor 100, which includes a tubular shell 110, a feed pipe 120, and at least one laminated mixing unit 130. The tubular shell 110 is connected to the feed pipe 120 and together form a mixing channel 101. The laminated mixing unit 130 is placed inside the mixing channel 101. The feed pipe 120 is provided with a first feed port 121 and a second feed port 122 communicating with the mixing channel 101. The tubular shell 110 is provided with a discharge port 123 communicating with the mixing channel 101. The stacked mixing unit 130 includes a baffle 131 and a plurality of stacked plates 132; the baffle 131 and the plurality of stacked plates 132 are stacked sequentially and a flow channel 133 is formed along their stacking direction; each stacked plate 132 forms a plurality of sub-flow channels 134 with adjacent stacked plates 132 or baffle 131, and the plurality of sub-flow channels 134 are all connected to the flow channel 133.

[0026] Please refer to Figures 1-5 The working principle of the tubular reactor 100 is as follows: The tubular reactor 100 comprises a tubular shell 110, a feed pipe 120, and at least one laminated mixing unit 130; the tubular shell 110 is connected with the feed pipe 120, and together forms a mixing channel 101, and the laminated mixing unit 130 is arranged in the mixing channel 101; the feed pipe 120 is provided with a first feed port 121 and a second feed port 122 which are in communication with the mixing channel 101, and the tubular shell 110 is provided with a discharge port 123 which is in communication with the mixing channel 101; thus, in the process of mixing, two materials can be respectively introduced into the mixing channel 101 through the first feed port 121 and the second feed port 122, and react and mix in the mixing channel 101; The laminated mixing unit 130 is arranged in the mixing channel 101, so that in the process of mixing, the two materials can be subjected to multi-channel distribution and multi-stage mixing when passing through the laminated mixing unit 130, thereby improving the efficiency of mixing and reaction; Specifically, the laminated mixing unit 130 comprises a baffle 131 and a plurality of laminated sheets 132; the baffle 131 and the plurality of laminated sheets 132 are arranged in sequence and stacked, and a flow guide channel 133 is formed along the stacking direction thereof; each laminated sheet 132 is formed with a plurality of sub-flow channels 134 with the adjacent laminated sheet 132 or the baffle 131, and the plurality of sub-flow channels 134 are in communication with the flow guide channel 133. Thus, based on the structure of the aforementioned laminated mixing unit 130, since the plurality of laminated sheets 132 are arranged, a plurality of sub-flow channels 134 can be formed, so that the mixture of the two materials can be distributed to the plurality of sub-flow channels 134 through the flow guide channel 133, and then flow into the flow guide channel 133, thereby realizing multi-stage distribution and confluence; Thus, the working process of the tubular reactor 100 is that, taking two materials as liquid material A and liquid material B as examples, the liquid material A and the liquid material B enter the feed pipe 120 through the first feed port 121 and the second feed port 122 respectively, collide and preliminarily mix in the feed pipe 120, then flow downward along the feed pipe 120, and the mixing effect of the liquid material A and the liquid material B is enhanced through the flow channels between the star-shaped laminated mixing units 130, and then flow out of the reactor from the discharge port 123 through the mixing channel 101.

[0027] In summary, the tubular reactor 100 has simple structure, is convenient to use, can improve the mixing and reaction efficiency, and realizes rapid and uniform mixing.

[0028] It should be noted that the tubular reactor 100 is a micro-channel reactor, and when the laminated sheet 132 is arranged, since a plurality of laminated sheets 132 are arranged, the same laminated sheet 132 and the adjacent laminated sheet 132 or the baffle plate 131 can form a group of sub-flow channels 134, and along the stacking direction of the plurality of laminated sheets 132, that is, along the extension direction of the flow guide channel 133, a plurality of groups of sub-flow channels 134 can be formed, and the plurality of groups of sub-flow channels 134 are all in communication with the flow guide channel 133, thereby being capable of forming multi-stage splitting and merging; and in the embodiment, an example in which each laminated sheet mixing unit 130 includes one baffle plate 131 and four laminated sheets 132 is described, and in other embodiments of the present application, the specific number of structures can also be adjusted according to the use requirements.

[0029] Further, please refer to Figures 1-8 On the basis of the above structure, when the baffle plate 131 and the laminated sheet 132 are arranged, the following arrangement mode can be adopted, the baffle plate 131 is provided with a first flow guide hole 135 and a plurality of second flow guide holes 136, the first flow guide hole 135 is located at the center of the baffle plate 131, and the plurality of second flow guide holes 136 are arranged around the center line of the baffle plate 131; the laminated sheet 132 is provided with a third flow guide hole 137 and a plurality of fourth flow guide holes 138, the third flow guide hole 137 is located at the center of the laminated sheet 132, and the plurality of fourth flow guide holes 138 are arranged around the center line of the laminated sheet 132; Along the stacking direction of the baffle plate 131 and the laminated sheet 132, the first flow guide hole 135 and the third flow guide hole 137 are sequentially communicated and form a first flow guide channel 139, and the second flow guide hole 136 and the fourth flow guide hole 138 are sequentially communicated and form a second flow guide channel 141; Among them, the second flow guide channel 141 communicates with the first flow guide channel 139 through the sub-flow channel 134.

[0030] Therefore, by the above arrangement mode of the baffle plate 131 and the laminated sheet 132, the first flow guide channel 139 and the second flow guide channel 141 can be formed, and due to the different positions of the first flow guide hole 135, the second flow guide hole 136, the third flow guide hole 137 and the third flow guide hole 137, the first flow guide channel 139 extends along the center line of the baffle plate 131 and the laminated sheet 132, and the second flow guide channel 141 extends around the center line of the baffle plate 131 and the laminated sheet 132, and since the number of the second flow guide hole 136 and the fourth flow guide hole 138 is multiple, a plurality of second flow guide channels 141 are formed, and the plurality of second flow guide channels 141 are arranged around the center line of the baffle plate 131 and the laminated sheet 132, and are located at the outer periphery of the first flow guide channel 139 and spaced apart from the first flow guide channel 139; And on this basis, since the first flow guide channel 139 and the second flow guide channel 141 are positionally spaced, so as to enable the mixture in the second flow guide channel 141 to flow to the first flow guide channel 139, or the mixture in the first flow guide channel 139 to flow to the second flow guide channel 141, therefore, the second flow guide channel 141 is communicated with the first flow guide channel 139 through the sub-flow channel 134, and on this basis, since the number of sub-flow channels 134 is multiple, when the mixture in the second flow guide channel 141 flows to the first flow guide channel 139 through the respective corresponding sub-flow channels 134, it is a split flow, and when it flows in the opposite direction, it is a confluence, thereby being able to form multiple levels of confluence and split flow on the basis of the multiple groups of sub-flow channels 134 formed.

[0031] From the above, when split flow and confluence are performed, it is performed through the sub-flow channel 134, therefore, the embodiment adopts that each laminated sheet 132 is provided with multiple flow guide grooves 142, each flow guide groove 142 corresponds to a fourth flow guide hole 138, and each flow guide groove 142 communicates the corresponding fourth flow guide hole 138 with the third flow guide hole 137; wherein each flow guide groove 142 forms a sub-flow channel 134 with the adjacent laminated sheet 132 or baffle 131. Therefore, on the basis that each flow guide groove 142 communicates the corresponding fourth flow guide hole 138 with the third flow guide hole 137, after the baffle 131 and the multiple laminated sheets 132 are laminated, multiple sub-flow channels 134 can be formed.

[0032] Moreover, when configuring the sub-flow channel 134, its structure shape can be adjusted by adjusting the shape of the flow guide groove 142, and on this basis, in order to increase the effect of split flow when each laminated sheet 132 forms each corresponding group of sub-flow channels 134, multiple flow guide grooves 142 can be arranged around the center line of the laminated sheet 132, so as to avoid the communication between adjacent two sub-flow channels 134, thereby being able to increase the effect of split flow, and each flow guide groove 142 is curvedly extended, so as to increase the path of mixing and reaction, thereby improving the efficiency of mixing and reaction.

[0033] In order to improve the efficiency, on the basis of the above configuration of the first flow guide channel 139, the flow guide grooves 142 on the adjacent two laminated sheets 132 can be at least partially communicated in the lamination direction of the baffle 131 and the laminated sheet 132. Further, in this way, it is adapted to the aforementioned manner of arranging multiple flow guide grooves 142 around the center line of the laminated sheet 132, so that the two groups of sub-flow channels 134 are partially communicated in the lamination direction, thereby being able to improve the efficiency of mixing and reaction.

[0034] On the basis of the above structure, since the at least partial communication of the flow guide grooves 142 on the two adjacent laminates 132 is adopted in the embodiment, in order to avoid the two groups of sub-flow channels 134 corresponding to the two adjacent laminates 132 respectively being formed and being in full communication along the stacking direction, the center lines of the two adjacent laminates 132 coincide along the stacking direction of the baffle 131 and the laminates 132, and the flow guide grooves 142 on the two adjacent laminates 132 are arranged at an angle with respect to the center lines, so as to stagger the arrangement of the flow guide grooves 142 on the two adjacent laminates 132.

[0035] Further, on the basis of the above structure, in order to enable the baffle 131 and the plurality of laminates 132 to be positioned and connected with each other when being stacked, so as to improve the stability during use, at least one first positioning hole 143 is arranged around the center line of the baffle 131, and the second flow guide hole 136 on the same baffle 131 is arranged at intervals with the first positioning hole 143; at least one second positioning hole 144 is arranged around the center line of the laminate 132, and the fourth flow guide hole 138 on the same laminate 132 is arranged at intervals with the second positioning hole 144; wherein, along the stacking direction of the baffle 131 and the laminate 132, the first positioning hole 143 and the second positioning hole 144 are in sequence communication to cooperate with the positioning member. That is, the first positioning hole 143 and the second positioning hole 144 are arranged in the embodiment, so as to install the positioning member in this way, thereby improving the stability of the installation.

[0036] On the basis of the above structure, the tubular reactor 100 provided by the embodiment can also adjust the number of the laminate mixing units 130 in the tubular reactor 100 according to the use requirement, that is, the tubular reactor 100 can also include a plurality of laminate mixing units 130, and when the plurality of laminate mixing units 130 are arranged, the plurality of laminate mixing units 130 can be located in the feed pipe 120, and the plurality of laminate mixing units 130 are sequentially stacked along the extension direction of the mixing channel 101. In this way, the number of the series of flow separation and flow combination is increased, so as to adjust the structure according to the requirement of the material, and improve the flexibility. It should be noted that when the plurality of laminate mixing units 130 are arranged, it is known from the above content that the mixing channel 101 is formed by connecting the tubular shell 110 and the feed pipe 120, based on which, when the laminate mixing unit 130 is arranged, it can be placed in the part of the feed pipe 120 forming the mixing channel 101, or it can be placed in the part of the tubular shell 110 forming the mixing channel 101, therefore, when the number of the laminate mixing units 130 changes, it can be placed in the feed pipe 120 or the tubular shell 110 according to the requirement.

[0037] Based on the above, it should be noted that the laminas 132 of the present embodiment are circular, with five flow guide grooves 142 for forming sub-flow channels 134 provided at the center, and the flow guide grooves 142 are curved, thereby forming a star-shaped flow channel (e.g., a five-petal star shape). The diameter D of the laminas 132 is 8 mm, and the thickness d is 0.1 mm. The size of the star-shaped flow channel, i.e., the width w of the flow guide grooves 142, is 1 mm, and the curved depth is 3.5 mm. The structure design of the laminas 132 in the lamination mixing unit 130 is based on the fluid dynamics simulation CFD optimized design, which is suitable for different fluid viscosities and flow rates. The tubular shell 110 can provide a containing space for the lamination unit 132. The fluid enters from one end of the feed pipe 120, and then flows through multiple groups of lamination mixing units 130 (e.g., 12 groups in series, each group consisting of four star-shaped laminas 132 and one baffle 131), thereby realizing multi-stage mixing.

[0038] It should be noted that please refer to Figures 1-9 After the fluid is introduced through the feed pipe 120, it will collide. In order to prevent the fluid from directly passing through the center of the lamination 132, a flow limiting plate 145 can be placed before the star-shaped lamination 132, and one flow limiting plate 145 is placed every four star-shaped laminas 132. The structure of the holes on the flow limiting plate 145 is the same as that of the second flow guide holes 136 and the first limiting holes on the baffle 131. The function of the flow limiting plate 145 is to make the fluid enter the lamination mixing unit 130 through the second flow guide holes 136, i.e., the second flow guide channels 141.

[0039] In addition, when the mixed fluid flows through the lamination mixing unit 130, the following processes occur: The structure design of the laminas 132 described above can form multiple sub-flow channels 134. In the present embodiment, five sub-flow channels 134 are formed, and the star-shaped flow channel is formed when the sub-flow channels 134 are curved. The fluid is divided into multiple sub-flows by the star-shaped flow channel, and the sub-flows flow in the star-shaped flow channel, thereby redistributing the flow rate and performing flow splitting. Multi-stage mixing: when multiple groups of laminas 132 are connected in series, the fluid split by the front-stage laminas 132 is split and disturbed again at the rear-stage laminas 132, forming a cycle of "splitting-mixing-re-splitting". Based on the multi-stage mixing theory in mass transfer, the mixing time is significantly shortened.

[0040] Further, please refer to Figures 1-10In order to further mix the mixture output by the laminar mixing unit 130, the tubular reactor 100 comprises a helical turbulence component 150 rotatably arranged in the tubular shell 110. The helical turbulence component 150 comprises a helical rotating shaft 151, helical blades 152 and a plurality of blocking pieces 153. The helical blades 152 are connected with the helical rotating shaft 151, and the plurality of blocking pieces 153 are connected with the helical blades 152 and arranged at intervals. The helical turbulence component 150 can mix the material mixed by the laminar mixing unit 130, and guide the material to move to the discharge port 123 by rotating in the mixing channel 101. In the process of rotating and driving the material mixing and moving, the helical blades 152 can also play a role of turbulence by the blocking pieces 153 arranged on the helical blades 152, which aims to play a role of turbulence and flow splitting.

[0041] Based on the above, please refer to Figures 1-10 When the tubular shell 110 and the helical turbulence component 150 are configured, a sealing ring is arranged at the connection between the shell tube and the feed pipe 120, and the tubular shell 110 adopts a flange-connected cylindrical structure with an outer diameter of 10 mm, an inner diameter of 8 mm and a length of 50 mm. According to the design requirements, the material is selected from SF and hastelloy, which meets the requirements of corrosion resistance and pressure resistance (P≤10 MPa). The helical turbulence component 150 is composed of a helical rod, helical blades 152 and blocking pieces 153. The diameter of the helical rod is 1 mm, and the length is 5 mm. The helical rod penetrates the center of the tubular shell 110. The pitch of the helical blades 152 is 3.5, and the thickness is 0.1 mm. The helical blades 152 are welded on the shaft of the helical rod. The blocking pieces 153 are arranged at intervals on the helical blades 152, which can be cylinders or prisms, forming a flow channel of "helical flow splitting, blocking turbulence and mixing and flow splitting". Ten groups of helical turbulence components 150 are combined.

[0042] When the fluid flows through the helical turbulence component 150, it experiences the following processes: Helical flow splitting: the fluid flows along the helical blades 152 and is forced to split into helical subflows. The subflows accelerate in the helical channel, and the flow velocity gradient increases. Blocking turbulence: the blocking pieces 153 on the helical blades 152 cause the subflows to generate secondary flow (vortex flow), which strengthens the momentum and mass transfer between the fluids and destroys the "laminar boundary layer". Mixing and flow splitting again: the fluid subjected to the blocking turbulence converges and splits again in the downstream of the mixing channel 101, forming multi-stage mixing. According to the multi-stage mixing theory of mass transfer, the mixing time is significantly shortened.

[0043] It should be noted that the helical turbulence component 150 can be connected in multiple stages according to the specific reaction to improve the mixing effect or prolong the residence time of the material.

[0044] Thus, in the case that the tubular reactor 100 is provided with the helical disturbance assembly 150, the working process is as follows: taking two materials as examples, liquid material A and liquid material B, the liquid material A and the liquid material B enter the feeding pipe 120 through the first feeding port 121 and the second feeding port 122 respectively, the liquid material A and the liquid material B collide and preliminarily mix in the feeding pipe 120, then flow downward along the feeding pipe 120, the mixing effect of the liquid material A and the liquid material B is enhanced by the flow channel between the star-shaped laminated mixing units 130, then flow into the tubular shell 110 for mixing, the mixing time is prolonged under the action of the helical disturbance assembly 150, and the mixing effect is further enhanced by the helical disturbance assembly 150, and finally flow out of the reactor from the discharge port 123.

[0045] In order to heat the materials in the mixing channel 101, the tubular shell 110 is further provided with an oil guiding cavity 111, and the tubular shell 110 is provided with an oil inlet 112 and an oil outlet 113 which communicate with the oil guiding cavity 111; the oil guiding cavity 111 is arranged around the mixing channel 101. In this way, the oil in the oil guiding cavity 111 is introduced through the oil inlet 112, so as to heat the materials in the mixing channel 101.

[0046] Please refer to Table 1 and Figures 1-18 The conditions and related data of the tubular reactor 100 in use are as follows: Mesh: non-structural tetrahedral mesh, grid number is nine hundred thousand, two inlets are arranged at the left end, the mesh is placed horizontally, and the gravity is in the negative direction of x; boundary condition: component equation is adopted, material 1 is ethylene glycol (material attribute is changed to the density and viscosity of ethanol), and material 2 is gasoline selected from the liquid gasoline option in the database; Inlet1 is an ethanol inlet with a mass fraction of 1 and a speed of 0.3 m / s, inlet2 is a gasoline inlet with a mass fraction of 1 and a speed of 0.5 m / s, both of which enter the reactor, and the outlet is a pressure outlet, and the remaining boundary conditions are initially set; The calculation time step is 0.01 s, the time step number is 200 steps, the total time is 2 s, and the flow field state is stable.

[0047] Calculation result explanation: The laminated region cross sections p1-p3 and the helical cross sections p4-p7 are temporarily intercepted respectively, the cross section mass fraction data is extracted, and the cross section mixing efficiency is calculated by using matlab.

[0048] Cross-section Mixing efficiency P1 0.223 P2 0.7102 P3 0.936 P4 0.9513 P5 0.9485 P6 0.9405 P7 0.9461 Table 1 According to the above data, it can be known that the tubular reactor 100 can improve the mixing and reaction efficiency, and realize rapid and uniform mixing.

[0049] The above merely provides preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A tubular reactor, characterized in that: The tubular reactor includes a tubular shell, a feed pipe, and at least one laminated mixing unit; the tubular shell is connected to the feed pipe and together form a mixing channel, and the laminated mixing unit is placed inside the mixing channel; the feed pipe is provided with a first feed port and a second feed port communicating with the mixing channel, and the tubular shell is provided with an outlet communicating with the mixing channel; The stacked mixing unit includes a baffle and multiple stacked plates; the baffle and the multiple stacked plates are stacked sequentially and have flow channels formed along their stacking direction; each stacked plate forms multiple sub-flow channels with adjacent stacked plates or baffles, and the multiple sub-flow channels are all connected to the flow channels.

2. The tubular reactor according to claim 1, characterized in that: The baffle is provided with a first guide hole and a plurality of second guide holes. The first guide hole is located at the center of the baffle, and the plurality of second guide holes are arranged around the center line of the baffle. The stacked plate is provided with a third guide hole and a plurality of fourth guide holes. The third guide hole is located at the center of the stacked plate, and the plurality of fourth guide holes are arranged around the center line of the stacked plate. Along the stacking direction of the baffle and the stacked pieces, the first guide hole and the third guide hole are sequentially connected to form a first guide channel, and the second guide hole and the fourth guide hole are sequentially connected to form a second guide channel; The second flow channel is connected to the first flow channel through the sub-flow channel.

3. The tubular reactor according to claim 2, characterized in that: Each of the stacked sheets is provided with multiple flow guide grooves, each flow guide groove corresponds to a fourth flow guide hole, and each flow guide groove connects the corresponding fourth flow guide hole to the third flow guide hole; Each of the flow guide grooves forms a sub-flow channel with the adjacent stacked plate or baffle.

4. The tubular reactor according to claim 3, characterized in that: The plurality of flow channels are spaced apart around the center line of the stack, and each flow channel extends in a curved manner.

5. The tubular reactor according to claim 3, characterized in that: Along the stacking direction of the baffle and the stacked plates, at least a portion of the guide grooves on two adjacent stacked plates are connected.

6. The tubular reactor according to claim 3, characterized in that: Along the stacking direction of the baffle and the stacked pieces, the center lines of two adjacent stacked pieces coincide, and the guide grooves on the two adjacent stacked pieces are set at an angle relative to the center line.

7. The tubular reactor according to claim 2, characterized in that: The baffle is provided with at least one first positioning hole around its center line, and the second guide hole on the same baffle is provided at intervals from the first positioning hole; The stacked sheet is provided with at least one second positioning hole around its center line, and the fourth guide hole on the same stacked sheet is provided at intervals from the second positioning hole; Wherein, along the stacking direction of the baffle and the stacked pieces, the first positioning hole and the second positioning hole are sequentially connected to cooperate with the positioning component.

8. The tubular reactor according to any one of claims 1-7, characterized in that: The tubular reactor includes multiple stacked mixing units, all of which are located inside the feed pipe and are stacked sequentially along the extension direction of the mixing channel.

9. The tubular reactor according to any one of claims 1-7, characterized in that: The tubular reactor includes a helical turbulence assembly rotatably disposed within the tubular shell; the helical turbulence assembly includes a helical shaft, helical blades, and multiple blocking components; the helical blades are connected to the helical shaft, and the multiple blocking components are all connected to the helical blades and arranged at intervals.

10. The tubular reactor according to any one of claims 1-7, characterized in that: The tubular housing also has an internal oil guiding cavity, and the outer periphery of the tubular housing is provided with an oil inlet and an oil outlet communicating with the oil guiding cavity; the oil guiding cavity is arranged around the mixing channel.

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