CN216678198U - Single-mode microwave continuous synthesizer - Google Patents
Single-mode microwave continuous synthesizer Download PDFInfo
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- CN216678198U CN216678198U CN202123164026.4U CN202123164026U CN216678198U CN 216678198 U CN216678198 U CN 216678198U CN 202123164026 U CN202123164026 U CN 202123164026U CN 216678198 U CN216678198 U CN 216678198U
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Abstract
The utility model provides a single-mode microwave continuous synthesizer which can realize continuous flow reaction of reaction materials and further improve the reaction efficiency. The continuous synthesizer of single mode microwave includes microwave reaction chamber and reactor, and the microwave reaction chamber includes cavity and upper cover, and upper cover detachably establishes at the top of cavity, and the upper cover is equipped with by the waveguide pipe, and the feed inlet and the discharge gate of reactor all stretch out the cavity through by the waveguide pipe. According to the single-mode microwave continuous synthesizer, the reaction materials can be continuously added through the feeding hole, the reaction materials are heated and reacted in a flowing mode by microwaves in the reactor, and the reactants directly and continuously flow out through the discharging hole; through dismantling the upper cover, removable different reactors further improve microwave chemical synthesis reaction variety.
Description
Technical Field
The utility model relates to the technical field of microwave equipment, in particular to a single-mode microwave continuous synthesizer.
Background
Microwave synthesis instruments on the market can be divided into three types according to the design principle of microwave cavities, namely multimode microwave synthesis instruments, single-mode microwave synthesis instruments and directional multimode synthesis instruments. The single-mode microwave synthesizer provides an advanced and reliable tool for microwave synthesis, the density of a highly focused microwave energy field ensures the uniformity of microwave heating and the uniformity and reproducibility of an experiment, has incomparable advantages compared with the traditional multi-mode microwave reactor, is widely applied to pharmaceutical research, organic chemical synthesis, biomedicine, material synthesis, microwave extraction, academic research and the like, is tested in chemical, biological and other aspects by college research institutes, and is suitable for the fields of liquid heating reflux, microwave synthesis, microwave sample dissolution, microwave hydrolysis, microwave catalysis, microwave extraction and the like.
In the existing microwave synthesis reaction technology, a single-mode microwave synthesizer is mostly applied to micro-reaction, and for industrialized macro-reaction, a large-volume multi-mode reactor is mostly selected for use, a reaction container of the single-mode microwave synthesizer is mostly box-type, tank-type and kettle-type, reaction materials in the reactor are generally in-situ refining modes, namely, flow states do not exist, generally, uniform feeding is performed firstly, then heating reaction is performed, uniform discharging is performed after the reaction is completed, and a continuous working mode of feeding and discharging cannot be realized. The reaction materials are in a static state, the reaction time is long, the efficiency is low, the reaction container is generally taken out for discharging after the reaction is finished, and the reaction efficiency is further reduced because frequent feeding and discharging are needed for the microwave synthesis reaction with large reaction amount.
SUMMERY OF THE UTILITY MODEL
The utility model provides a single-mode microwave continuous synthesizer which can realize continuous flowing reaction of reaction materials and further improve the reaction efficiency.
In order to achieve the technical purpose, the utility model adopts the following technical scheme to realize: the utility model provides a single mode microwave continuous synthesis appearance, includes microwave reaction chamber and continuous flow reactor, the microwave reaction chamber is cylindrically, including circumference curb plate, upper cover, bottom plate and by the circumference curb plate the upper cover reaches the cylindrical cavity that the bottom plate encloses, upper cover detachably establishes the top of cavity, cover on and be equipped with by the waveguide pipe, the continuous flow reactor is arranged in the cylindrical cavity, the feed inlet and the discharge gate of continuous flow reactor all warp by the waveguide pipe stretch out cylindrical cavity.
The microwave reaction cavity is in single-mode microwave distribution, and the microwave excitation position is located on the circumferential side plate, the upper cover or the bottom plate.
The continuous flow reactor is a tubular coil pipe and comprises a feeding vertical section, a discharging vertical section and a coil pipe section, wherein the top end of the feeding vertical section extends out of the cylindrical cavity to form the feeding hole, the bottom end of the feeding vertical section is located at the bottom of the cylindrical cavity, the top end of the discharging vertical section extends out of the cylindrical cavity to form the discharging hole, the bottom end of the discharging vertical section is located at the top of the cylindrical cavity, the coil pipe section is wound into a spiral shape, one end of the coil pipe section is connected with the bottom end of the feeding vertical section, and the other end of the coil pipe section is connected with the bottom end of the discharging vertical section.
The continuous flow reactor is a reciprocating winding type coil pipe and comprises a feeding vertical section, a discharging vertical section, a first coil pipe section and a second coil pipe section, wherein the top end of the feeding vertical section extends out of the cylindrical cavity to form the feeding port, the bottom end of the feeding vertical section is located at the top of the cylindrical cavity, the top end of the discharging vertical section extends out of the cylindrical cavity to form the discharging port, the bottom end of the discharging vertical section is located at the top of the cylindrical cavity, the first coil pipe section is wound into a spiral shape, the top end of the first coil pipe section is connected with the bottom end of the feeding vertical section, the second coil pipe section is wound into a spiral shape, the top end of the second coil pipe section is connected with the bottom end of the discharging vertical section, and the bottom end of the first coil pipe section is connected with the bottom end of the second coil pipe section.
The continuous flow reactor is a U-shaped tube.
The continuous flow reactor is a microchannel reactor.
The continuous flow reactor comprises an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, the top end of the outer pipe is fixedly connected with the outer wall of the inner pipe into a whole so as to seal the top end of the outer pipe, the top end of the outer pipe extends out of the cylindrical cavity, and the outer pipe is provided with a feed inlet positioned outside the cylindrical cavity; a U-shaped reaction space is formed between the outer pipe and the inner pipe; the top end of the inner tube is open and extends out of the cylindrical cavity to form the discharge hole, and micropores for communicating the inner space of the inner tube with the reaction space are formed in the bottom end of the inner tube.
The continuous flow reactor is made of low wave-absorbing or high wave-absorbing non-metallic materials.
The low wave-absorbing non-metallic material can be glass, quartz or plastic, and the high wave-absorbing non-metallic material is silicon carbide or graphite.
The microwave reaction cavity is vertically arranged or obliquely arranged or horizontally arranged.
Compared with the prior art, the utility model has the following advantages and positive effects:
1. the single-mode microwave continuous synthesizer has the advantages that a feed port and a discharge port of a reactor extend out of a cylindrical cavity of a microwave reaction cavity through a cut-off waveguide tube on an upper cover of the microwave reaction cavity, reaction materials can be continuously added through the feed port, the reaction materials are heated and reacted by microwaves in a flowing mode in a continuous flow reactor, and reactants directly and continuously flow out through the discharge port;
2. through dismantling the upper cover, removable different reactors further improve the reaction diversity of microwave chemical synthesis.
Drawings
FIG. 1 is a schematic structural diagram of a single-mode microwave continuous synthesizer according to the present invention when the reactor is a cylindrical coil;
FIG. 2 is a schematic structural diagram of a reciprocating winding type coil reactor of the single-mode microwave continuous synthesizer of the present invention;
FIG. 3 is a schematic structural diagram of a U-shaped tube reactor of the single-mode microwave continuous synthesizer of the present invention;
FIG. 4 is a schematic structural diagram of a microchannel reactor of the single-mode microwave continuous synthesizer according to the present invention;
FIG. 5 is a schematic structural diagram of a double-layer tubular reactor of the single-mode microwave continuous synthesizer of the present invention.
Reference numerals: 10. a microwave reaction chamber; 11. a circumferential side plate; 12. An upper cover; 13. cutting off the waveguide; 14. a base plate; 15. a cylindrical cavity; 20. a continuous flow reactor; 21. a feed inlet; 22. a discharge port; 23. a feed vertical section; 24. a discharging vertical section; 25. a coil section; 26. a first coil section; 27. a second coil section; 28. an arc-shaped section; 29. an inner tube; 210. an outer tube; 211. a reaction space; 212. and (4) micro-pores.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, the single-mode microwave continuous synthesizer of the present embodiment includes a microwave reaction chamber 10 and a continuous flow reactor 20, where the microwave reaction chamber 10 includes a cylindrical shape, and includes a circumferential side plate 11, an upper cover 12, a bottom plate 14, and a cylindrical cavity 15 surrounded by the circumferential side plate 11, the upper cover 12, and the bottom plate 14; the upper cover 12 is provided with a cut-off waveguide tube 13, the continuous flow reactor 20 is arranged in the cylindrical cavity 15, and a feed inlet 21 and a discharge outlet 22 of the continuous flow reactor 20 both extend out of the cylindrical cavity 15 through the cut-off waveguide tube 13, namely are positioned outside the microwave reaction cavity 10.
Specifically, the continuous flow reactor 20 is made of a non-metal material, and according to the process requirements, a material with low wave absorption (low microwave absorption), such as glass, quartz, plastic, etc., or a material with high wave absorption (high microwave absorption), such as silicon carbide, graphite, etc., may be selected.
The microwave reaction chamber 10 has a single mode microwave distribution, and the microwave excitation position can be located on the circumferential side plate 11, the upper cover 12 or the bottom plate 14. Microwaves are fed into the cylindrical cavity 15 through the microwave feed-in port to perform microwave heating catalysis on the reaction materials in the continuous flow reactor 20 so as to enable the reaction materials to react; the reaction materials are usually liquid materials, which can be respectively connected with pipelines through a feed port 21 and a discharge port 22 of the continuous flow reactor 20, and pump devices are arranged on the pipelines to realize continuous feeding and discharging; the cut-off waveguide tube 13 has high impedance to microwave frequency, plays a role of electromagnetic shielding, can not pass through the microwave, and can effectively prevent the microwave from leaking and simultaneously allow the feed port 21 and the discharge port 22 of the continuous flow reactor 20 to pass through; the upper cover 12 can be fixed by screws, and the contact surface of the upper cover 12 and the top surface of the cylindrical cavity 15 can be provided with an airtight structure and a microwave sealing structure (such as a microwave anti-chute) to realize air tightness and microwave leakage prevention.
In the single-mode microwave continuous synthesizer of the embodiment, the stop waveguide 13 on the upper cover 12 of the feeding port 21 and the discharging port 22 of the continuous flow reactor 20 extends out of the cylindrical cavity 15 of the microwave reaction cavity, the reaction material can be continuously added into the continuous flow reactor 20 through the feeding port 21, flows in the continuous flow reactor 20, is continuously heated and catalyzed by microwave and reacts in the flowing process, and the reactant directly continuously flows out through the discharging port 22, so that the reaction efficiency is greatly improved compared with the existing static reaction of the reaction material; the reaction time is ensured by controlling the flow rate and the flow rate of the reaction materials, the microwave heating temperature and the microwave heating power, the process is controllable, and the method is suitable for various microwave chemical synthesis reactions; by removing the upper cover 12, different continuous flow reactors 20 can be replaced, further improving the diversity of the microwave chemical synthesis reaction.
As shown in fig. 1, the continuous flow reactor 20 in this embodiment is a cylindrical coil pipe, and includes a feeding vertical section 23, a discharging vertical section 24, and a coil pipe section 25, wherein the top end of the feeding vertical section 23 extends out of the cylindrical cavity 15 to form the feeding port 21, the bottom end of the feeding vertical section is located at the bottom of the cylindrical cavity 15, the top end of the discharging vertical section 24 extends out of the cylindrical cavity 15 to form the discharging port 22, the bottom end of the discharging vertical section 24 is located at the top of the cylindrical cavity 15, the coil pipe section 25 is wound into a cylindrical spiral shape, one end of the coil pipe section is connected to the bottom end of the feeding vertical section 23, and the other end of the coil pipe section is connected to the bottom end of the discharging vertical section 24. Reaction liquid is added into the feeding vertical section 23 through the feeding hole 21 and continuously flows to the bottom end of the feeding vertical section 23, namely reaches the bottom of the cylindrical cavity 15, then continuously flows along each spiral ring of the coil section 25 from bottom to top, continuously reacts under the action of microwaves, and reactants enter the discharging vertical section 24 from the bottom end of the discharging vertical section 24 and continuously flow out from the discharging hole 22 at the top end of the discharging vertical section 24. The continuous flow reactor 20 with the structure is long in whole length, large in capacity, long in flow path and reliable in microwave heating, and reaction liquid flows from bottom to top when passing through the coil section 25, so that the reaction liquid is favorably heated and catalyzed by microwaves fully, and the reaction effectiveness is improved.
Further, the cylindrical coil continuous flow reactor 20, with its adjacent spiral loops contacting each other, i.e. the continuous flow reactor 20 in this embodiment is tightly spirally wound, further increases the overall length and capacity of the continuous flow reactor 20 to meet the large capacity reaction requirement.
Referring to fig. 2, it is another form of a continuous flow reactor 20, specifically a reciprocating coiled tube, including a feeding vertical section 23, a discharging vertical section 24, a first coiled tube section 26 and a second coiled tube section 27, wherein the top end of the feeding vertical section 23 extends out of the cavity to form a feeding port 21, the bottom end is located at the top of the cylindrical cavity 15, the top end of the discharging vertical section 24 extends out of the cylindrical cavity 15 to form a discharging port 22, the bottom end of the discharging vertical section 24 is located at the top of the cylindrical cavity 15, the first coiled tube section 26 is coiled into a spiral shape, the top end thereof is connected with the bottom end of the feeding vertical section 23, the second coiled tube section 27 is coiled into a spiral shape, the top end thereof is connected with the bottom end of the discharging vertical section 24, and the bottom end of the first coiled tube section 26 is connected with the bottom end of the second coiled tube section 27. Reaction liquid is added into the feeding vertical section 23 through the feeding hole 21 and continuously flows to the bottom end of the feeding vertical section 23, namely reaches the top of the cylindrical cavity 15, then flows through the first coil pipe section 26 and the second coil pipe section 27, continuously reacts under the action of microwaves, and reactants enter the discharging vertical section 24 from the bottom end of the discharging vertical section 24 and continuously flow out from the discharging hole 22 at the top end of the discharging vertical section 24. The continuous flow reactor 20 in this configuration has a moderate overall length and capacity, and is suitable for moderate capacity reaction requirements.
Further, the bottom end of the first coil section 26 and the bottom end of the second coil section 27 are connected by a downwardly curved arc section 28 to improve the smoothness of the liquid flow.
Of course, the continuous flow reactor 20 may also be a U-tube or microchannel reactor, as shown with reference to FIGS. 3 and 4.
Referring to fig. 5, it is another structural form of the continuous flow reactor 20, which includes an inner tube 29 and an outer tube 210, the outer tube 210 is sleeved outside the inner tube 29, the top end of the outer tube 210 is located below the top end of the inner tube 29 and is fixedly connected with the outer wall of the inner tube 29 to close the top end of the outer tube 210, and the inner tube 29 and the outer tube 210 are connected into a whole, the top end of the outer tube 210 extends out of the cylindrical cavity 15, and the outer tube 210 is formed with a feed port 21 located outside the cylindrical cavity 15; a U-shaped reaction space 211 is formed between the outer tube 210 and the inner tube 29; the top end of the inner tube 29 is open and extends out of the cylindrical chamber 15 to form the discharge port 22, and the bottom end of the inner tube 29 is formed with a micro-hole 212 communicating the inner space thereof with the reaction space 211. The reaction liquid enters the reaction space 211 between the outer tube 210 and the inner tube 29 through the inlet 21, enters the inner tube 29 through the micropores 212 after the reaction through the microwave heating catalysis, and finally flows out from the outlet 22 at the top end of the inner tube 29. By adopting the continuous flow reactor 20, not only liquid-liquid reaction can be carried out, but also gas-solid reaction can be carried out, at the moment, solid reaction materials are placed in the inner tube 29, gas (reaction gas or protective gas) continuously flows into the reaction space 211 from the feed inlet 21 on the outer tube 210, flows into the inner tube 29 through the micropores 212, reacts with the solid materials in the inner tube 29, continuous flow reaction is realized, and reaction products are discharged or taken out from the discharge outlet 22. In the same way, gas-liquid reaction can also be carried out.
Further, the pores 212 may be configured with a filter screen to perform a filtering function.
Further, the microwave reaction chamber 10 can be vertically arranged, obliquely arranged or horizontally arranged according to the process requirements, so as to realize stations at any positions such as upright, inverted, obliquely upright and horizontal positions.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A single-mode microwave continuous synthesizer is characterized in that: including microwave reaction chamber and continuous flow reactor, the microwave reaction chamber is cylindrically, including circumference curb plate, upper cover, bottom plate and by the circumference curb plate the upper cover reaches the cylindrical cavity that the bottom plate encloses, upper cover detachably establishes the top of cavity, cover on and be equipped with by the waveguide pipe, the continuous flow reactor is arranged in the cylindrical cavity, the feed inlet and the discharge gate of continuous flow reactor all pass through by the waveguide pipe stretch out cylindrical cavity.
2. The single mode microwave continuous synthesizer of claim 1, characterized in that: the microwave reaction cavity is in single-mode microwave distribution, and the microwave excitation position is located on the circumferential side plate, the upper cover or the bottom plate.
3. The single mode microwave continuous synthesizer of claim 1, characterized in that: the continuous flow reactor is a tubular coil pipe and comprises a feeding vertical section, a discharging vertical section and a coil pipe section, wherein the top end of the feeding vertical section extends out of the cylindrical cavity to form the feeding hole, the bottom end of the feeding vertical section is located at the bottom of the cylindrical cavity, the top end of the discharging vertical section extends out of the cylindrical cavity to form the discharging hole, the bottom end of the discharging vertical section is located at the top of the cylindrical cavity, the coil pipe section is wound into a spiral shape, one end of the coil pipe section is connected with the bottom end of the feeding vertical section, and the other end of the coil pipe section is connected with the bottom end of the discharging vertical section.
4. The single mode microwave continuous synthesizer of claim 1, characterized in that: the continuous flow reactor is a reciprocating winding type coil pipe and comprises a feeding vertical section, a discharging vertical section, a first coil pipe section and a second coil pipe section, wherein the top end of the feeding vertical section extends out of the cylindrical cavity to form the feeding port, the bottom end of the feeding vertical section is located at the top of the cylindrical cavity, the top end of the discharging vertical section extends out of the cylindrical cavity to form the discharging port, the bottom end of the discharging vertical section is located at the top of the cylindrical cavity, the first coil pipe section is wound into a spiral shape, the top end of the first coil pipe section is connected with the bottom end of the feeding vertical section, the second coil pipe section is wound into a spiral shape, the top end of the second coil pipe section is connected with the bottom end of the discharging vertical section, and the bottom end of the first coil pipe section is connected with the bottom end of the second coil pipe section.
5. The single mode microwave continuous synthesizer of claim 1, characterized in that: the continuous flow reactor is a U-shaped tube.
6. The single mode microwave continuous synthesizer of claim 1, characterized in that: the continuous flow reactor is a microchannel reactor.
7. The single mode microwave continuous synthesizer of claim 1, characterized in that: the continuous flow reactor comprises an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, the top end of the outer pipe is fixedly connected with the outer wall of the inner pipe into a whole so as to seal the top end of the outer pipe, the top end of the outer pipe extends out of the cylindrical cavity, and the outer pipe is provided with a feed inlet positioned outside the cylindrical cavity; a U-shaped reaction space is formed between the outer pipe and the inner pipe; the top end of the inner tube is open and extends out of the cylindrical cavity to form the discharge hole, and micropores for communicating the inner space of the inner tube with the reaction space are formed in the bottom end of the inner tube.
8. The single mode microwave continuous synthesizer according to any one of claims 3-7, characterized in that: the continuous flow reactor is made of low wave-absorbing or high wave-absorbing non-metallic materials.
9. The single mode microwave continuous synthesizer of claim 8, wherein: the low wave-absorbing non-metallic material can be glass, quartz or plastic, and the high wave-absorbing non-metallic material is silicon carbide or graphite.
10. The single mode microwave continuous synthesizer of claim 1, characterized in that: the microwave reaction cavity is vertically arranged or obliquely arranged or horizontally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123164026.4U CN216678198U (en) | 2021-12-16 | 2021-12-16 | Single-mode microwave continuous synthesizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123164026.4U CN216678198U (en) | 2021-12-16 | 2021-12-16 | Single-mode microwave continuous synthesizer |
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| CN216678198U true CN216678198U (en) | 2022-06-07 |
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| CN202123164026.4U Active CN216678198U (en) | 2021-12-16 | 2021-12-16 | Single-mode microwave continuous synthesizer |
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