A continuous flow vortex tube type reactor with stable temperature control function

Abstract

The application discloses a continuous flow vortex pipe type reactor with stable temperature control function and relates to the technical field of pipe type reactors.The reactor comprises a reaction shell, a variable-speed flow gap, a spiral pipe, a stirring shaft and an annular part.The variable-speed flow gap structure formed by the annular part and the stirring shaft generates a Venturi effect in the area, the flow rate is significantly improved, the scouring effect on the outer wall of the stirring shaft is enhanced, and the attached bubbles can be effectively dispersed and impurities can be prevented from adhering; meanwhile, the spiral pipe located in the variable-speed flow gap further forms a local secondary acceleration area, the fluid velocity is further improved, and disturbance is generated between different speed layers, so that the fluid is fully mixed.The spiral pipe rotates with the stirring shaft, the secondary acceleration area changes position continuously, high-speed and low-speed fluids are alternately mixed, stable or periodic flow states of the flow field are avoided, and the mixing efficiency of the reaction system and the heat transfer uniformity are improved.The multi-stage annular part makes the disturbance angle of the fluid different each time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tubular reactors, in particular to a continuous flow vortex tubular reactor with stable temperature control function. BACKGROUND

[0002] The continuous flow vortex tubular reactor is a kind of high-efficiency reaction equipment applied in the fields of fine chemical industry, pharmaceutical synthesis, polymer material preparation, catalytic reaction and new energy material development. Its continuous operation mode helps to realize automatic control and industrial amplification, improve product consistency and production efficiency, and reduce manual intervention and safety risks.

[0003] The existing reactor has a single fluid flow state in the reaction cavity during operation, and the distribution of reactants in space is uneven, which leads to uneven local heating, large temperature gradient, easy to produce side reactions or reduce reaction rate. At the same time, when the fluid flows in the channel with constant or periodic rules, a stable flow field is easily formed, which leads to periodic accumulation of local kinetic energy and heat in space, and reduces the heat transfer and mixing efficiency. On the other hand, bubbles and impurities are easily attached to the inner wall of the reactor during the reaction process, which not only weakens the heat transfer effect, but also disturbs the fluid flow, further reducing the stability and reaction efficiency of the system. SUMMARY

[0004] The purpose of the present application is to provide a continuous flow vortex tubular reactor with stable temperature control function to solve the problems in the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a continuous flow vortex tubular reactor with stable temperature control function, comprising a reaction shell and a heat supply assembly, the reaction shell is respectively provided with an inlet end and an outlet end, the heat supply assembly is used for temperature control of the reactants in the reactor, a stirring shaft is rotatably installed in the reaction shell, one end of the stirring shaft is connected with a driving device, characterized in that: a disturbance assembly is installed on the stirring shaft, a plurality of annular components are installed in the reaction shell, a variable speed flow gap is formed between the stirring shaft and the annular components, and the gap of the variable speed flow gap changes cyclically with the rotation of the stirring shaft.

[0006] The tubular reactor is connected with a control system, and the control system is used for controlling the operation of the whole tubular reactor. The stirring shaft is provided with a hollow cavity.

[0007] Further, the plurality of annular components are arranged at equal intervals along the axial direction of the reaction shell, the deflection angles of adjacent annular components are equal, the annular components are arranged in a staggered manner in the circumferential direction, and the plurality of annular components perform multi-stage disturbance and variable speed control on the flowing reactants.

[0008] The annular components with different deflection angles make the disturbance angle of the fluid different each time, which improves the mixing uniformity.

[0009] The variable flow gap formed by the annular component and the stirring shaft reduces the passing property at this position, forming a constricted passage. According to the Venturi principle, the flow rate of the fluid increases at the constriction. Therefore, when the reactants flow through the variable flow gap, the flow rate increases, thereby enhancing the local scouring effect on the outer wall of the stirring shaft, dispersing the bubbles adhering to the outer wall of the stirring shaft, and preventing impurities from adhering to the outer wall of the stirring shaft.

[0010] Since the spiral pipe is installed on the stirring shaft, part of the spiral pipe is located in the variable flow gap, which partially reduces the variable flow gap in the vicinity, forming a secondary acceleration area. Under the action of the Venturi effect, the fluid velocity at this point will further increase, causing the fluid at this point to have a differential speed with the surrounding fluid. When the fluid passes through the variable flow gap, the high-speed fluid will cause the surrounding low-speed fluid to converge and accelerate, and ultimately the whole mixture. Since the spiral pipe rotates with the stirring shaft, the secondary acceleration area will change position with the rotation of the stirring shaft, so that the position of the high-speed fluid also changes constantly. The high-speed and low-speed fluids mix in different areas, producing a changing mixing effect, which avoids the periodic accumulation of local kinetic energy and heat in space when the fluid flows in the passage at a constant or periodic rate.

[0011] Further, the annular component includes an outer ring and flow regulating vanes. The outer ring is installed in the reaction shell, and the flow regulating vanes are angularly offset and uniformly installed on the outer ring.

[0012] Further, the flow regulating vanes include flange arc plates, and a plurality of connecting blocks are installed on the flange arc plates. The connecting blocks are installed in the reaction shell, and a plurality of flange arc plates form a ring-shaped rotating guide structure for rotating the passing fluid.

[0013] The flowing reactants are divided into three layers, namely, an inner layer of fluid close to the stirring shaft, an outer layer of fluid close to the inner wall of the reaction shell, and an intermediate layer of fluid between the two. The inner layer of fluid passes through the variable flow gap, and the outer layer of fluid passes through the acceleration flow gap. The passing fluid is accelerated to scour the inner wall of the reaction shell, dispersing the bubbles adhering to the inner wall of the reaction shell, and preventing impurities from adhering to the inner wall of the reaction shell.

[0014] The intermediate layer of fluid passes through the ring-shaped rotating guide structure formed by the flange arc plates, thereby rotating. The rotation accelerates the intermediate layer of fluid to mix with the inner and outer layers of fluid, improving the temperature uniformity of the reactants, and preventing excessive by-products due to delayed or uneven heat exchange of the intermediate layer of fluid. Thus, the purpose of fully disturbing the reactants by the annular component is achieved.

[0015] The three layers of fluid pass through the annular component for a distance, and due to the different flow paths of the three layers, the three layers are mixed by mutual disturbance, and the mixed fluid passes through the annular component with a different deflection angle again to perform the next level of disturbance, so as to realize multi-level disturbance of the fluid.

[0016] Further, the connecting blocks form an accelerated flow gap.

[0017] Further, the flange arc plate is made of flexible material.

[0018] When the flow rate of the reactant is too fast, the flange arc plate is bent under the impact of the fluid, at this time, the gap of the variable flow gap is increased, and the passability is enhanced, so as to realize the purpose of automatically adjusting the passability of the variable flow gap according to the flow.

[0019] Further, the disturbance assembly is a spiral pipe, and the spiral pipe is installed on the stirring shaft.

[0020] The heating device circulates and delivers the heat transfer medium into the spiral pipe and the hollow cavity in the stirring shaft, and the heat transfer medium exchanges heat with the reactant in the reaction cavity through the inner wall of the hollow cavity, so as to realize the internal circulation temperature control of the reactant.

[0021] The heating device injects the heat transfer medium into the outer circulation cavity, and the heat transfer medium exchanges heat with the reactant in the reaction cavity through the outer wall of the reaction shell, so as to realize the external circulation temperature control of the reactant.

[0022] The two cooperate to realize the internal and external double circulation temperature control of the reactant.

[0023] Further, a plurality of heat-conducting disturbance rib plates are installed on the spiral pipe, and one end of the heat-conducting disturbance rib plate extends into the spiral pipe.

[0024] During the reaction, the control system synchronously opens the driving device, the driving device drives the stirring shaft to rotate in the reaction shell, and the stirring shaft drives the spiral pipe to rotate. When the spiral pipe rotates, the surrounding reactant is preliminarily disturbed, and the reactant can absorb heat more uniformly. The heat-conducting disturbance rib plate on the spiral pipe can increase the disturbance area of the spiral pipe and improve the disturbance effect. And since one end of the heat-conducting disturbance rib plate extends into the spiral pipe, the heat exchange area of the spiral pipe is increased, so that the heat transfer medium in the spiral pipe can exchange heat with the reactant more efficiently.

[0025] Further, the heat-conducting disturbance rib plate is made of heat-conducting material.

[0026] Further, a sleeve shell is installed on the reaction shell, an outer circulation cavity is formed between the reaction shell and the sleeve shell, a reaction cavity is formed between the spiral pipe and the reaction shell, and the annular component is located in the reaction cavity.

[0027] A plurality of feeding ports are arranged on the inlet end, and a plurality of discharging ports are arranged on the outlet end.

[0028] In operation, reactants are inputted into the inlet end from the feed inlet through the external pipeline, and flow in the reaction shell from the inlet end to the outlet end, and finally discharged from the discharge outlet.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] 1. The spiral tube rotates to preliminarily disturb the surrounding reactants, so that the reactants can absorb heat more uniformly. The heat-conducting disturbance rib plate on the spiral tube not only expands the fluid disturbance range and improves the disturbance effect, but also increases the heat exchange contact area, so that the heat exchange between the internal heat transfer medium and the reactants is more sufficient, thereby improving the reaction efficiency and the stability of temperature control.

[0031] 2. The variable-speed flow gap structure formed by the annular part and the stirring shaft causes the fluid to produce a Venturi effect in this area, and the flow rate is significantly increased, thereby enhancing the scouring effect on the outer wall of the stirring shaft, which can effectively disperse the attached bubbles and prevent impurities from adhering; at the same time, the spiral tube located in the variable-speed flow gap further forms a local secondary acceleration area, so that the fluid velocity is increased again and disturbances are generated between different speed layers, promoting the full mixing of the fluid.

[0032] 3. Since the spiral tube rotates with the stirring shaft, the secondary acceleration area changes position continuously, so that high-speed and low-speed fluids are alternately mixed, avoiding the occurrence of stable or periodic flow state in the flow field, thereby improving the mixing efficiency and heat transfer uniformity of the reaction system.

[0033] 4. The annular rotating guide structure composed of the flange arc plates makes the middle layer fluid rotate and accelerate to mix with the inner and outer layer fluids, improving the temperature uniformity of the reactants and avoiding the generation of excessive secondary reactants due to untimely or uneven heat exchange of the middle layer fluid. The outer layer fluid passes through the accelerated flow gap, and the fluid passing through is scoured against the inner wall of the reaction shell after being accelerated, dispersing the bubbles attached to the inner wall of the reaction shell and preventing impurities from adhering to the inner wall of the reaction shell. When the flow rate of the fluid is too fast, the flange arc plates bend under the impact of the fluid, at which time the gap of the variable-speed flow gap increases, and the passability is enhanced, thereby achieving the purpose of automatically adjusting the passability of the variable-speed flow gap according to the flow.

[0034] 5. After the fluid passes through the annular part for a certain distance, it will be disturbed and mixed with each other, and the combined fluid will pass through the next annular part with a different deflection angle for the next level of disturbance, thereby realizing multi-stage disturbance of the fluid. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a perspective view of the tubular reactor of the present application;

[0036] Figure 2 It is a sectional view of the tubular reactor of the present applicationFigure 1 ;

[0037] Figure 3 This is a cross-section of the tubular reactor of the present invention. Figure 2 ;

[0038] Figure 4 For the present invention Figure 2 A magnified view of a portion of region A in the middle;

[0039] Figure 5 This is a perspective view of the annular component of the present invention;

[0040] Figure 6 This is a perspective view of the flow control plate of the present invention;

[0041] Figure 7 This is a perspective view of the temperature-controlled stirring device of the present invention;

[0042] Figure 8 This is a perspective view of the thermally conductive interference-increasing rib of the present invention.

[0043] In the diagram: 1. Reaction shell; 2. Variable speed flow gap; 3. Spiral tube; 4. Stirring shaft; 5. Annular component; 11. Shell; 12. External circulation chamber; 13. Outlet end; 14. Inlet end; 15. Reaction chamber; 51. Outer ring; 52. Flow regulating plate; 31. Thermally conductive and disturbance-increasing rib; 521. Flange arc plate; 522. Connecting block; 523. Accelerating flow gap. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] like Figures 1-8 As shown, the present invention provides a continuous flow vortex tube reactor with stable temperature control function: it includes a reaction shell 1 and a heating component. The reaction shell 1 is provided with an inlet end 14 and an outlet end 13. The heating component is used to control the temperature of the reactants in the reactor. A stirring shaft 4 is rotatably installed inside the reaction shell 1. One end of the stirring shaft 4 is connected to a driving device. The invention is characterized in that: a disturbance component is installed on the stirring shaft 4, and several annular components 5 are installed inside the reaction shell 1. A variable speed flow gap 2 is formed between the stirring shaft 4 and the annular components 5. The gap of the variable speed flow gap 2 changes cyclically with the rotation of the stirring shaft 4.

[0046] Several annular components 5 are arranged at equal intervals along the axial direction of the reaction shell 1, with adjacent annular components 5 having the same deflection angle. This allows the annular components 5 to be staggered sequentially in the circumferential direction, enabling multi-stage disturbance and variable speed control of the flowing reactants. The annular components 5 with their deflection angles ensure that the disturbance angle to the fluid varies each time, improving mixing uniformity.

[0047] The tubular reactor is connected to an external control system, which controls the operation of the entire tubular reactor. The stirring shaft 4 has a hollow cavity with an inlet and an outlet at both ends. The outlet of the hollow cavity is connected to a heating device.

[0048] A casing 11 is installed on the reaction shell 1, forming an external circulation chamber 12 between the reaction shell 1 and the casing 11. A reaction chamber 15 is formed between the spiral tube 3 and the reaction shell 1, and the annular component 5 is located inside the reaction chamber 15. Several feed ports are provided on the inlet end 14, and several discharge ports are provided on the outlet end 13. During operation, reactants are fed into the inlet end 14 through external pipes. The reactants flow from the inlet end 14 to the outlet end 13 within the reaction shell 1 and are finally discharged from the discharge ports.

[0049] The annular component 5 includes an outer ring 51 and flow control plates 52. The outer ring 51 is installed inside the reaction shell 1, and several flow control plates 52 are deflected at an angle and evenly installed on the outer ring 51.

[0050] The flow control plate 52 includes a flange arc plate 521, on which a plurality of connecting blocks 522 are mounted. The connecting blocks 522 are installed inside the reaction shell 1. The plurality of flange arc plates 521 form an annular rotary guide structure for causing the passing fluid to rotate.

[0051] The connecting blocks 522 form an acceleration flow gap 523.

[0052] The flange arc plate 521 is made of flexible material. When the reactant flow rate is too fast, the flange arc plate 521 bends under the impact of the fluid. At this time, the gap of the variable speed flow gap 2 increases, and the throughput is enhanced, thereby achieving the purpose of automatically adjusting the throughput of the variable speed flow gap 2 according to the flow rate.

[0053] The disturbance component is a spiral tube 3, which is mounted on the stirring shaft 4.

[0054] Several heat-conducting and disturbance-increasing ribs 31 are installed on the spiral tube 3, with one end of the heat-conducting and disturbance-increasing ribs 31 extending into the spiral tube 3.

[0055] The thermally conductive interference-increasing rib 31 is made of thermally conductive material.

[0056] The helical pipe 3 is provided with an inlet and an outlet at both ends, the outlet of the helical pipe 3 is communicated with the inlet of the hollow cavity in the stirring shaft 4, and the inlet of the helical pipe 3 is connected with the heat supply device. The heat supply device injects heat transfer medium into the inlet of the helical pipe 3, the heat transfer medium flows along the helical pipe 3, and then enters the hollow cavity in the stirring shaft 4 from the outlet of the helical pipe 3. The fluid flows from the inlet to the outlet of the hollow cavity, and finally returns to the heat supply device. The heat supply device adjusts the temperature of the returned heat transfer medium and then outputs again. The heat transfer medium exchanges heat with the reactant in the reaction cavity 15 through the inner wall of the hollow cavity and the helical pipe 3, so as to realize the internal circulation temperature control of the reactant.

[0057] The outer circulation cavity 12 is also provided with an inlet and an outlet at both ends. The heat supply device injects heat transfer medium into the inlet of the outer circulation cavity 12. The heat transfer medium exchanges heat with the reactant in the reaction cavity 15 through the outer wall of the reaction shell 1, and then flows out from the outlet of the outer circulation cavity 12, so as to realize the external circulation temperature control of the reactant. The two cooperate to realize the internal and external double circulation temperature control of the reactant.

[0058] The working principle of the present application is as follows: during operation, the reactant is input into the inlet end 14 from the feeding port through the external pipeline. The reactant flows in the reaction shell 1 from the inlet end 14 to the outlet end 13, and finally is discharged from the discharging port. The heat supply device circulates and delivers heat transfer medium into the helical pipe 3 and the hollow cavity in the stirring shaft 4. The heat transfer medium exchanges heat with the reactant in the reaction cavity 15 through the inner wall of the hollow cavity, so as to realize the internal circulation temperature control of the reactant. The heat supply device injects heat transfer medium into the outer circulation cavity 12. The heat transfer medium exchanges heat with the reactant in the reaction cavity 15 through the outer wall of the reaction shell 1, so as to realize the external circulation temperature control of the reactant. The two cooperate to realize the internal and external double circulation temperature control of the reactant.

[0059] During the reaction, the control system synchronously starts the driving device, the driving device drives the stirring shaft 4 to rotate in the reaction shell 1, and the stirring shaft 4 drives the helical pipe 3 to rotate. The helical pipe 3 rotates to preliminarily disturb the surrounding reactant, and makes the reactant more uniformly absorb heat. The heat-conducting disturbance rib plate 31 on the helical pipe 3 can increase the disturbance area of the helical pipe 3 and improve the disturbance effect. Since one end of the heat-conducting disturbance rib plate 31 extends into the helical pipe 3, the heat exchange area of the helical pipe 3 is increased, so that the heat transfer medium in the helical pipe 3 can more efficiently exchange heat with the reactant.

[0060] The variable-speed flow gap 2 formed by the annular component 5 and the stirring shaft 4 reduces the passability at this position, forms a constricted channel, and according to the Venturi principle, when the fluid flows through the constricted channel in the pipeline, the flow rate of the fluid at the constriction increases. Therefore, when the reactant flows through the variable-speed flow gap 2, the flow rate will increase, thereby enhancing the local scouring effect of the outer wall of the stirring shaft 4, dispersing the bubbles adhered to the outer wall of the stirring shaft 4, and preventing the outer wall of the stirring shaft 4 from adhering impurities.

[0061] Since the spiral tube 3 is installed on the stirring shaft 4, a part of the spiral tube 3 is located in the variable flow gap 2, which partially reduces the nearby variable flow gap 2, forming a secondary acceleration area, under the action of the Venturi effect, the fluid velocity at this place will further increase, so that the fluid at this place generates differential speed with the surrounding fluid, when the fluid passes through the variable flow gap 2, the high-speed fluid will drive the surrounding low-speed fluid to converge and accelerate, and finally the whole is mixed. Since the spiral tube 3 rotates with the stirring shaft 4, the secondary acceleration area will change position with the rotation of the stirring shaft 4, so that the position of the high-speed fluid is also constantly changing, and the high-speed and low-speed fluids are mixed in different areas, producing changing mixing effect, avoiding the periodic accumulation of local kinetic energy and heat in space when the fluid flows in the channel at a constant or periodic speed.

[0062] The flowing reactants are divided into three layers, namely the inner layer fluid near the stirring shaft 4, the outer layer fluid near the inner wall of the reaction shell 1, and the intermediate layer fluid between them, wherein the inner layer fluid passes through the variable flow gap 2, and the outer layer fluid passes through the acceleration flow gap 523, and the fluid passing through is accelerated to scour the inner wall of the reaction shell 1, dispersing the bubbles adhering to the inner wall of the reaction shell 1, and also preventing the inner wall of the reaction shell 1 from adhering impurities.

[0063] The intermediate layer fluid passes through the annular rotating guide structure composed of the flange arc plate 521, thereby generating rotation, which makes the intermediate layer fluid accelerate and mix with the inner and outer layer fluids, improving the temperature uniformity of the reactants, and avoiding the generation of too much secondary reactant due to untimely or uneven heat exchange of the intermediate layer fluid. Thus, the purpose of using the annular part 5 to fully disturb the reactants is achieved. When the flow rate of the reactants is too fast, the flange arc plate 521 made of flexible material bends under the impact of the fluid, at this time, the gap of the variable flow gap 2 increases, and the passability is enhanced, thereby achieving the purpose of automatically adjusting the passability of the variable flow gap 2 according to the flow. After the three layers of fluid pass through the annular part 5 for a certain distance, they will disturb and mix with each other due to different flow paths, and the combined fluid will pass through the next annular part 5 with different deflection angles for the next level of disturbance, thereby realizing multi-stage disturbance of the fluid.

[0064] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A continuous flow vortex tube reactor with stable temperature control function, the tube reactor comprising a reaction shell (1) and a heating assembly, wherein the reaction shell (1) is respectively provided with an inlet end (14) and an outlet end (13), the heating assembly is used to control the temperature of the reactants in the reactor, and a stirring shaft (4) is rotatably installed inside the reaction shell (1), one end of the stirring shaft (4) being connected to a driving device, characterized in that: A disturbance component is installed on the stirring shaft (4), and several annular components (5) are installed inside the reaction shell (1). A variable speed flow gap (2) is formed between the stirring shaft (4) and the annular components (5). The gap of the variable speed flow gap (2) changes cyclically with the rotation of the stirring shaft (4). The annular component (5) includes an outer ring (51) and flow control plates (52). The outer ring (51) is installed inside the reaction shell (1), and a plurality of flow control plates (52) are angled and uniformly installed on the outer ring (51). The flow control plate (52) includes a flange arc plate (521), and a plurality of connecting blocks (522) are installed on the flange arc plate (521). The connecting blocks (522) are installed inside the reaction shell (1). The plurality of flange arc plates (521) form an annular rotary guide structure for causing the fluid passing through to rotate. The connecting blocks (522) form an acceleration flow gap (523); The flange arc plate (521) is made of flexible material.

2. A continuous flow vortex tube reactor with stable temperature control function according to claim 1, characterized in that: Several annular components (5) are arranged at equal intervals along the axial direction of the reaction shell (1), and the deflection angles of adjacent annular components (5) are equal, so that the annular components (5) are arranged in a staggered manner in the circumferential direction, and the several annular components (5) perform multi-level disturbance and speed control on the flowing reactants.

3. A continuous flow vortex tube reactor with stable temperature control function according to claim 1, characterized in that: The disturbance component is a spiral tube (3), which is mounted on the stirring shaft (4).

4. A continuous flow vortex tube reactor with stable temperature control function according to claim 3, characterized in that: A plurality of thermally conductive and disturbance-increasing ribs (31) are installed on the spiral tube (3), and one end of the thermally conductive and disturbance-increasing ribs (31) extends into the spiral tube (3).

5. A continuous flow vortex tube reactor with stable temperature control function according to claim 4, characterized in that: The thermally conductive disturbance-increasing rib (31) is made of thermally conductive material.

6. A continuous flow vortex tube reactor with stable temperature control function according to claim 3, characterized in that: The reaction shell (1) is equipped with a sleeve (11), and the reaction shell (1) and the sleeve (11) form an external circulation cavity (12). The spiral tube (3) and the reaction shell (1) form a reaction cavity (15), and the annular component (5) is located inside the reaction cavity (15).

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