CN213824722U

CN213824722U - Continuous flow micro-reactor

Info

Publication number: CN213824722U
Application number: CN202021764752.2U
Authority: CN
Inventors: 杨正群
Original assignee: Suzhou Baiaoke Biotechnology Co ltd
Current assignee: Suzhou Baiaoke Biotechnology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-07-30
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to a continuous flow micro-reactor, which comprises a reactor shell; a mixing channel, a preheating channel and a reaction channel which are connected in sequence in the reactor shell; the reactor is provided with a feeding port relative to the mixing channel; a discharge port is arranged opposite to the reaction channel, and a static mixer is arranged in the mixing channel; the static mixer comprises a mixing unit; the mixing unit is provided with a cutting hole; the preheating channel comprises a fixed shell; a heat exchange tube is arranged in the fixed shell; a heat exchange channel is arranged opposite to the heat exchange tube; the heat exchange tubes and the heat exchange channels are distributed in a staggered manner. The utility model discloses the mixing unit in the well mixing channel adopts the cavity design to set up cutting hole on the surface, can effectively promote mixing efficiency. Meanwhile, the heat exchange tube is combined with the heat exchange channel, and the heat exchange channel and the preheating shell are integrally arranged, so that the heat exchange tube is convenient to maintain, no redundant fixing device is needed, and the manufacturing cost is reduced; the heat exchange medium moves in the heat exchange channel and the direction of the fluid in the heat exchange tube, and the preheating is uniform.

Description

Continuous flow micro-reactor

Technical Field

The utility model relates to a micro-reactor, concretely relates to continuous flow micro-reactor belongs to chemical industry equipment technical field.

Background

Micro chemical equipment is gradually developed, such as a micro mixer, a micro reactor, micro chemical analysis, a micro heat exchanger, a micro extractor, a micro pump, a micro valve and the like, wherein the micro reactor has the widest application prospect. The microreactor has the advantages of simple structure, no amplification effect, easy control of operating conditions, good reaction selectivity, intrinsic safety and the like, and has attracted great attention of numerous researchers including chemical engineering and people in related fields. A microreactor is a three-dimensional structural element which can be used for carrying out chemical reactions and which is manufactured in a solid matrix by means of special microfabrication techniques. Microreactors generally contain small channel sizes (equivalent diameters less than 500 μm) and channel diversity in which fluids flow and in which the desired reactions are desired to occur. This results in a very large surface area to volume ratio in a micro-structured chemical device. Microreactors, i.e. microchannel reactors, are microreactors fabricated using precision machining techniques with characteristic dimensions of between 10 and 300 microns (or 1000 microns), "micro" of a microreactor meaning that the channels of the process fluid are on the order of microns and not the physical dimensions of the microreactor or the production of products are small. The microreactors can contain millions of microchannels and thus achieve high throughput. During the use process, the preheating temperature, the impurity ratio, the mixing degree and the like can determine the performance of the micro-reaction. In the prior art, the preheating of the microreactor usually adopts a heat exchange mode, the mode depends on the heat exchange time of fluid and a medium, and if the heat exchange time is short, the ideal temperature is probably not reached, so that the subsequent chemical reaction fails. Therefore, further improvements are desired.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defect among the prior art, provide a continuous flow microreactor, the suitability is strong, simple structure is reasonable, temperature control is nimble, and reaction efficiency is high.

To achieve the above objects, the present invention provides a continuous flow microreactor comprising a reactor housing; the reactor shell is internally and sequentially connected with a mixing channel, a preheating channel and a reaction channel; the reactor is provided with a feeding port relative to the mixing channel; a discharge port is arranged opposite to the reaction channel, and a static mixer is arranged in the mixing channel; the static mixer comprises a mixing unit; the mixing unit is provided with a cutting hole; the preheating channel comprises a fixed shell; a heat exchange tube is arranged in the fixed shell; the fixed shell is provided with a heat exchange channel relative to the heat exchange tube; the heat exchange tubes and the heat exchange channels are distributed in a staggered manner.

Preferably, the mixing unit comprises a central mixing body; the surface of the central mixing body is provided with a spiral mixing blade; the cutting hole is arranged on the spiral mixing paddle and the center mixing body.

The combination of the cutting holes and the hollow structure can separate and mix two phases of gas and liquid, and the mixing effect is improved.

Preferably, the center mixing body and the spiral mixing blades are arranged in a hollow manner.

Preferably, the heat exchange channel and the fixed shell are integrally formed; the heat exchange channel comprises a liquid inlet and a liquid outlet; and fixed joints are arranged at two ends of the heat exchange tube.

The heat exchange channels are used for the flow of a heat exchange medium. The heat exchange tube exchanges heat with the heat exchange channel to realize the preheating of fluid.

Preferably, a filter screen is arranged in the fixed joint; the liquid inlet and the liquid outlet are respectively connected with the pump body; the heat exchange channel is matched with the heat exchange tube in shape.

Preferably, a heating wire and a temperature sensor are arranged in the heat exchange tube; the heat exchange channel is arranged on the inner side of the fixed shell in a protruding mode.

If the heat transfer medium can not effectively transfer heat, the heating wire can be selected to heat up, and the accurate control is carried out by matching with the temperature sensor.

Preferably, the heating wires are distributed on the outer side of the heat exchange channel; the temperature sensor and the heating wire are electrically connected with the controller.

The utility model discloses the mixing unit in the well mixing channel adopts the cavity design to set up cutting hole on the surface, can effectively promote mixing efficiency. Meanwhile, the heat exchange tube is combined with the heat exchange channel, and the heat exchange channel and the preheating shell are integrally arranged, so that the heat exchange tube is convenient to maintain, no redundant fixing device is needed, and the manufacturing cost is reduced; the heat exchange medium moves in the heat exchange channel and the direction of the fluid in the heat exchange tube, and the preheating is uniform. Finally, the heating wires and the temperature sensors outside the heat exchange channel can achieve the effects of assisting in temperature rise and accurately controlling temperature, and the preheating temperature of the fluid is guaranteed to be optimal.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic cross-sectional view of the preheating channel.

In the figure, 1 is a mixing channel, 2 is a preheating channel, 3 is a reaction channel, 4 is a feeding port, 5 is a discharging port, 6 is a static mixer, 6.1 is a mixing unit, 6.2 is a central mixing body, 6.3 is a spiral mixing paddle, 6.1.1 is a cutting hole, 7 is a fixed shell, 8 is a heat exchange tube, 9 is a heat exchange channel, 9.1 is a liquid inlet, and 9.2 is a liquid outlet.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.

Referring to fig. 1-2, a continuous-flow microreactor includes a reactor housing; the reactor shell is internally and sequentially connected with a mixing channel 1, a preheating channel 2 and a reaction channel 3; the reactor shell is provided with a feeding port 4 relative to the mixing channel; a discharge port 5 is arranged opposite to the reaction channel, and a static mixer 6 is arranged in the mixing channel 1; the static mixer 6 comprises a mixing unit 6.1; the mixing unit is provided with a cutting hole 6.1.1; the preheating channel comprises a fixed shell 7; a heat exchange tube 8 is arranged in the fixed shell 7; the fixed shell 7 is provided with a heat exchange channel 9 opposite to the heat exchange tube; the heat exchange tubes and the heat exchange channels are distributed in a staggered manner.

Further, the mixing unit comprises a central mixing body 6.2; the surface of the central mixing body is provided with a spiral mixing blade 6.3; the cutting hole is arranged on the spiral mixing paddle and the center mixing body.

Furthermore, the center mixing body and the spiral mixing blades are arranged in a hollow mode.

Furthermore, the heat exchange channel 9 and the fixed shell 7 are integrally formed; the heat exchange channel 9 comprises a liquid inlet 9.1 and a liquid outlet 9.2; and fixed joints are arranged at two ends of the heat exchange tube 8.

Specifically, in this embodiment, the heat exchange medium flows into the heat exchange channel from the liquid inlet 9.1, and the pump body circulates the heat exchange medium, which may be water. After the heat exchange medium enters the heat exchange channel, the heat exchange tube on one side of the heat exchange channel is heated, and fluid to be heated in the heat exchange tube is preheated. Because the heat exchange tube is a sleeve or a coil, the flow speed can be reduced, and the fluid can be fully heated.

Furthermore, a filter screen is arranged in the fixed joint; the liquid inlet and the liquid outlet are respectively connected with the pump body; the heat exchange channel is matched with the heat exchange tube in shape; the heat exchange tube is a coil or a sleeve.

Furthermore, a heating wire and a temperature sensor are arranged in the heat exchange tube; the heat exchange channel is arranged on the inner side of the fixed shell in a protruding mode.

Furthermore, the heating wires are distributed on the outer side of the heat exchange channel; the temperature sensor and the heating wire are electrically connected with the controller.

Specifically, in this embodiment, if the fluid cannot be heated to the set temperature by the heat exchange medium, the auxiliary heating may be performed by the heater wire.

Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalent solutions without departing from the spirit and scope of the present invention, which should be covered by the claims of the present invention.

Claims

1. A continuous-flow microreactor comprising a reactor housing; the reactor shell is internally and sequentially connected with a mixing channel, a preheating channel and a reaction channel; the reactor is provided with a feeding port relative to the mixing channel; relative reaction channel is provided with discharge gate, its characterized in that: a static mixer is arranged in the mixing channel; the static mixer comprises a mixing unit; the mixing unit is provided with a cutting hole; the preheating channel comprises a fixed shell; a heat exchange tube is arranged in the fixed shell; the fixed shell is provided with a heat exchange channel relative to the heat exchange tube; the heat exchange tubes and the heat exchange channels are distributed in a staggered manner.

2. A continuous-flow microreactor according to claim 1, wherein: the mixing unit comprises a central mixing body; the surface of the central mixing body is provided with a spiral mixing blade; the cutting hole is arranged on the spiral mixing paddle and the center mixing body.

3. A continuous-flow microreactor according to claim 2, wherein: the center mixing body and the spiral mixing blades are arranged in a hollow mode.

4. A continuous-flow microreactor according to claim 1, wherein: the heat exchange channel and the fixed shell are integrally formed; the heat exchange channel comprises a liquid inlet and a liquid outlet; and fixed joints are arranged at two ends of the heat exchange tube.

5. A continuous-flow microreactor according to claim 4, wherein: a filter screen is arranged in the fixed joint; the liquid inlet and the liquid outlet are respectively connected with the pump body; the heat exchange channel is matched with the heat exchange tube in shape; the heat exchange tube is a coil or a sleeve.

6. A continuous-flow microreactor according to claim 4, wherein: a heating wire and a temperature sensor are arranged in the heat exchange tube; the heat exchange channel is arranged on the inner side of the fixed shell in a protruding mode.

7. The continuous-flow microreactor of claim 6, wherein: the heating wires are distributed on the outer side of the heat exchange channel; the temperature sensor and the heating wire are electrically connected with the controller.