An experimental grade dynamic multi-tube internal disturbance flow reactor of an internal gear type

Abstract

The utility model relates to a kind of inner gear type experimental grade dynamic multi-pipe inner disturbance flow reactor.The inner gear type experimental grade dynamic multi-pipe inner disturbance flow reactor provided by the utility model, by respectively inserting into the inner disturbance member of inner disturbance device in several reaction straight pipes and the cooperation of power assembly that drives several inner disturbance members rotate simultaneously, the disturbance to reaction fluid is realized, not only strengthen mass transfer heat transfer but also promote the mixing of reaction fluid, and then optimize the reaction process.The shaft hole is passed through the baffle tank on the upper pipe box, under the premise of ensuring that adjacent reaction straight pipes are connected in series, the inner disturbance shaft of inner disturbance device can be smoothly inserted into reaction straight pipe, and the reaction fluid in reaction straight pipe is separated by shaft hole and sealing element at shaft hole through power assembly.

Description

Technical Field

[0001] This utility model relates to the field of chemical reactors, and in particular to an internal gear type experimental dynamic multi-tube internal turbulence reactor. Background Technology

[0002] In existing chemical experiments, different chemical reactions require different reaction tube flows. Because the length of the reactor tube is fixed, the same reactor cannot perfectly match all experiments when facing different reactions. To solve this problem, multiple reactors are usually connected in series to increase the length of the reaction flow path. This method is very inconvenient in practical use.

[0003] Rapid, strongly exothermic / endothermic reactions, reactions involving high-viscosity media, or solid-liquid multiphase reactions all require extremely narrow residence time distributions (approximate plug flow) to ensure uniform reaction rates and minimize byproduct formation. Dynamic tubular reactors exhibit plug flow, minimizing backmixing and improving reaction selectivity. To accommodate these special reactions, existing technologies often employ static mixing tubular reactors and stirred tank reactors. However, these reactors present several technical challenges. For instance, the mixing intensity in static mixing tubular reactors is velocity-dependent; at low flow rates or high viscosity conditions, the mixing effect significantly decreases. Furthermore, for materials containing solid particles or prone to polymerization and coking, static elements can easily form stagnant dead zones, leading to blockages and cumbersome periodic cleaning. Especially for strongly exothermic reactions, jacketed heat exchange alone may not be sufficient to remove heat in time, resulting in localized temperature runaway. The shape and performance of the reactor's mixing elements are fixed, preventing flexible adjustment of the stirring intensity based on reaction progress (e.g., viscosity changes, reaction stages). Mechanically stirred batch reactors present several challenges: Dynamic sealing issues exist: the dynamic sealing point where the agitator shaft penetrates the reactor wall is a potential source of leakage, posing a significant safety hazard for highly hazardous, high-pressure, or highly toxic materials. Wide residence time distribution: particularly in batch reactors, severe backmixing occurs, making them unsuitable for continuous reactions requiring high selectivity. Scale-up effects: mixing and heat transfer efficiencies may change during scale-up, resulting in complex scale-up patterns. High energy consumption: maintaining continuous mechanical stirring requires energy. Utility Model Content

[0004] In view of this, the present invention provides an internal gear type experimental stage dynamic multi-tube internal turbulence reactor, comprising: A plurality of straight reaction tubes for providing a reaction channel for the reaction fluid; the plurality of straight reaction tubes are connected in series with each other; A heat exchange shell used for heat exchange of the reaction fluid within the reaction straight tube; An internal turbulence device used to provide disturbance to the reaction fluid within a reaction straight pipe; The heat exchange shell is provided with an upper tube sheet and a lower tube sheet at both ends for fixing the reaction straight tubes; an upper tube box is provided on the upper tube sheet; and a lower tube box is provided on the lower tube sheet.

[0005] The internal turbulence device includes an internal turbulence element inserted into each reaction straight tube and a power assembly for simultaneously driving several internal turbulence elements to rotate. The internal disturbance component includes an internal disturbance shaft inserted into the reaction straight tube.

[0006] Based on the above scheme, the power assembly includes a force-receiving component fixed to the end of the inner disturbance shaft and a force-applying component for driving the force-receiving component to rotate.

[0007] Based on the above scheme, the force-receiving component is a driven gear, and the force-applying component is a driving gear that cooperates with the driven gear; The power assembly also includes a bearing plate, which has a central fixing hole for connecting the force-applying component; the central fixing hole is surrounded by bearing fixing holes for fixing the force-applying component; the upper tube box has a tube box central shaft hole for cooperating with the central fixing hole; the tube box central shaft hole is surrounded by shaft holes for the inner disturbance shaft to pass through.

[0008] Based on the above scheme, the upper tube box is also provided with a baffle groove for connecting two adjacent reaction straight tubes in series, and the shaft hole passes through the baffle groove; the force-bearing component and the baffle groove are located on both sides of the upper tube box; The lower tube box is equipped with a fluid inlet for inputting the reaction fluid into the reactor and a fluid outlet for outputting the reacted fluid out of the reactor.

[0009] This utility model provides an experimental-grade dynamic multi-tube internal turbulence reactor with an internal gear type. Through the cooperation of internal turbulence devices inserted into several reaction tubes and a power assembly that drives these internal turbulence devices to rotate simultaneously, the reactor agitates the reaction fluid, enhancing mass and heat transfer, promoting mixing, and thus optimizing the reaction process. Simultaneously, the reactor integrates the mechanical transmission device and the main reaction body. The driving gear, acting as a force-applying component, simultaneously drives several driven gears to rotate, thereby agitating the reaction fluid within the multiple reaction tubes. A shaft hole passes through a baffle groove on the upper tube box, ensuring that adjacent reaction tubes are connected in series while allowing the internal turbulence device's internal turbulence shaft to be smoothly inserted into the reaction tubes. The power assembly is separated from the reaction fluid within the reaction tubes by the shaft hole and a seal at the shaft hole. Attached Figure Description

[0010] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the reactor structure in Embodiment 1 of this application; Figure 2 for Figure 1 A schematic diagram of the bearing plate in the reactor. Figure 3 for Figure 1 Schematic diagram of the upper tube box in the reactor; Figure 4 for Figure 1 A cross-sectional view of the upper tube box in the reactor. Figure 5 for Figure 1 A schematic diagram of the lower tube box in the reactor. Detailed Implementation

[0011] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0012] Example 1 like Figure 1 As shown, this application provides an internal gear-type experimental-grade dynamic multi-tube internal turbulence reactor, comprising: A plurality of straight reaction tubes 1 are used to provide a reaction channel for the reaction fluid; the plurality of straight reaction tubes 1 are connected in series with each other; Heat exchange shell 2 is used for heat exchange of the reaction fluid in the reaction straight tube 1; Internal turbulence device 3 is used to provide disturbance to the reaction fluid in the reaction straight pipe 1; The heat exchange shell 2 is provided with an upper tube sheet 2-1 and a lower tube sheet 2-2 at both ends for fixing the reaction straight tube 1; an upper tube box 4-1 is provided on the upper tube sheet 2-1; and a lower tube box 4-2 is provided on the lower tube sheet 2-2.

[0013] The internal turbulence device 3 includes an internal turbulence element 3-1 inserted into each reaction straight pipe 1 and a power assembly 3-2 for simultaneously driving several internal turbulence elements 3-1 to rotate. The internal disturbance component 3-1 includes an internal disturbance shaft 3-11 inserted into the reaction straight tube 1, and fins 3-12 are provided on the internal disturbance shaft 3-11.

[0014] During use, the reaction fluid flows inside the reaction straight pipe 1. During the reaction process, the fluid exchanges heat with the heat exchange fluid filled in the heat exchange shell 2. At the same time, the internal turbulence device 3 provides turbulence to the reaction fluid to promote the reaction.

[0015] As a specific implementation, the power assembly 3-2 includes a force-receiving component 3-21 fixed to the end of the inner disturbance shaft 3-11 and a force-applying component 3-22 for driving the force-receiving component 3-21 to rotate.

[0016] As a specific implementation scheme, the force-receiving component 3-21 is a driven gear, and the force-applying component 3-22 is a driving gear used in conjunction with the driven gear; wherein, the driving gear can be directly connected to the motor, or it can be connected to the motor through a permanent magnet coupling.

[0017] like Figure 1 As shown, when the force-bearing component 3-21 is a driven gear, the power assembly 3-2 also includes a bearing plate 3-23, such as... Figure 2 As shown, the bearing plate 3-23 is provided with a central fixing hole 3-231 for shaft connection of the force-applying component 3-22; the central fixing hole 3-231 is surrounded by bearing fixing holes 3-232 for fixing the force-applying component 3-21.

[0018] like Figure 4 As shown, the upper tube box 4-1 is provided with a tube box central shaft hole 4-11 for use with the central fixing hole 3-231; the tube box central shaft hole 4-11 is surrounded by a shaft hole 4-12 for the inner disturbance shaft 3-11 to pass through. In use, the inner disturbance shaft 3-11 extends into the reaction straight tube 1 through the shaft hole 4-12, and a shaft seal is used to seal between the inner disturbance shaft 3-11 and the shaft hole 4-12 to prevent the reaction fluid from overflowing.

[0019] like Figure 3 and Figure 4 As shown, the upper tube box 4-1 is also provided with a baffle 4-13 for connecting two adjacent reaction straight tubes 1 in series. The shaft hole 4-12 passes through the baffle 4-13. The force-bearing member 3-21 and the baffle 4-13 are located on both sides of the upper tube box 4-1.

[0020] In this embodiment, the reactor uses a specially structured upper tube box 4-1. The shaft hole 4-12 passes through the baffle groove 4-13 on the upper tube box 4-1. Under the premise of ensuring that the adjacent reaction straight tubes 1 are connected in series, the internal turbulence shaft 3-11 of the internal turbulence device 3 can be smoothly inserted into the reaction straight tube 1, and the power component 3-2 is separated from the reaction fluid in the reaction straight tube 1 through the shaft hole 4-12 and the seal at the shaft hole.

[0021] like Figure 5 As shown, the lower tube box 4-2 is provided with a fluid inlet 4-2-1 for inputting the reaction fluid into the reactor and a fluid outlet 4-2-2 for outputting the reaction fluid out of the reactor.

[0022] During the reaction experiment, the reaction fluid enters the reaction straight tube 1 through the fluid inlet 4-2-1 on the lower tube box 4-2. Under the heat exchange of the fluid in the heat exchange shell 2, the reaction occurs. Afterwards, the reaction fluid is deflected by the baffle 4-13 into an adjacent reaction straight tube 1 to continue the reaction. For different reaction experiments, the length of each reaction straight tube 1 and the number of times the reaction fluid deflects in the baffle 4-13 can be set according to the specific requirements of the reaction, thus achieving the preset requirements. In other words, for different reaction experiments, only the upper and lower tube boxes with different numbers of baffles 4-13 and the reaction straight tubes 1 of different lengths need to be replaced. During the flow and reaction of the reaction fluid in the reaction straight tube 1, the inner disturbance shaft 3-11, extending from the upper part of the upper tube box 4-1 through the shaft hole 4-12 into the reaction straight tube 1, rotates under the drive of the driven gear, thereby causing the fins 3-12 to disturb the reaction fluid.

[0023] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An internal gear-type experimental stage dynamic multi-tube internal turbulence reactor, characterized in that, include: A plurality of reaction straight tubes (1) for providing reaction channels for the reaction fluid; the plurality of reaction straight tubes (1) are connected in series with each other; Heat exchange shell (2) for heat exchange of the reaction fluid in the reaction straight tube (1); An internal turbulence device (3) is used to provide disturbance to the reaction fluid in the reaction straight tube (1). The internal turbulence device (3) includes an internal turbulence element (3-1) inserted into each reaction straight tube (1) and a power assembly (3-2) for driving several internal turbulence elements (3-1) to rotate simultaneously. The internal disturbance component (3-1) includes an internal disturbance shaft (3-11) inserted into the reaction straight tube (1) and fins (3-12) disposed on the internal disturbance shaft (3-11).

2. The internal gear-type experimental dynamic multi-tube internal turbulence reactor according to claim 1, characterized in that, The power assembly (3-2) includes a force-receiving component (3-21) fixed to the end of the inner disturbance shaft (3-11) and a force-applying component (3-22) for driving the force-receiving component (3-21) to rotate.

3. The internal gear-type experimental stage dynamic multi-tube internal turbulence reactor according to claim 2, characterized in that, The force-receiving component (3-21) is a driven gear, and the force-applying component (3-22) is a driving gear that works in conjunction with the driven gear.

4. The internal gear-type experimental stage dynamic multi-tube internal turbulence reactor according to claim 3, characterized in that, The power assembly (3-2) also includes a bearing plate (3-23), on which a central fixing hole (3-231) for shaft connection of the force-applying component (3-22) is provided; and a bearing fixing hole (3-232) for fixing the force-receiving component (3-21) is provided around the central fixing hole (3-231).

5. The internal gear-type experimental stage dynamic multi-tube internal turbulence reactor according to claim 4, characterized in that, The heat exchange shell (2) is provided with an upper tube sheet (2-1) and a lower tube sheet (2-2) for fixing the reaction straight tube (1) at both ends; an upper tube box (4-1) is provided on the upper tube sheet (2-1); and a lower tube box (4-2) is provided on the lower tube sheet (2-2).

6. The internal gear-type experimental stage dynamic multi-tube internal turbulence reactor according to claim 5, characterized in that, The upper tube box (4-1) is provided with a tube box center shaft hole (4-11) for use with the center fixing hole (3-231); the tube box center shaft hole (4-11) is surrounded by a shaft hole (4-12) for the inner disturbance shaft (3-11) to pass through.

7. The internal gear-type experimental stage dynamic multi-tube internal turbulence reactor according to claim 6, characterized in that, The upper tube box (4-1) is also provided with a baffle groove (4-13) for connecting two adjacent reaction straight tubes (1) in series, and the shaft hole (4-12) passes through the baffle groove (4-13); the force-bearing component (3-21) and the baffle groove (4-13) are respectively provided on both sides of the upper tube box (4-1).

8. The internal gear-type experimental stage dynamic multi-tube internal turbulence reactor according to claim 5, characterized in that, The lower tube box (4-2) is provided with a fluid inlet (4-2-1) for inputting the reaction fluid into the reactor and a fluid outlet (4-2-2) for outputting the reaction fluid out of the reactor.

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