CN214486846U - Microwave catalytic reaction device for producing glucosamine hydrochloride - Google Patents
Microwave catalytic reaction device for producing glucosamine hydrochloride Download PDFInfo
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- CN214486846U CN214486846U CN202120377302.6U CN202120377302U CN214486846U CN 214486846 U CN214486846 U CN 214486846U CN 202120377302 U CN202120377302 U CN 202120377302U CN 214486846 U CN214486846 U CN 214486846U
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Abstract
The utility model discloses a microwave catalytic reaction unit for producing glucosamine hydrochloride, microwave catalytic reaction technical field. The device comprises a microwave generator, a microwave catalytic reactor, a hollow fiber membrane component and a crystallization kettle, wherein the microwave catalytic reactor is arranged in the microwave generator, and a stirring device is arranged in the microwave catalytic reactor; the top of the microwave catalytic reactor is provided with a raw material liquid inlet and a catalyst liquid inlet, and the bottom of the microwave catalytic reactor is provided with a liquid outlet; the raw material liquid inlet is communicated with a raw material liquid inlet pipe, and the catalyst liquid inlet is communicated with a catalyst liquid inlet pipe; the liquid outlet is connected with the liquid inlet of the hollow fiber membrane component, and the liquid outlet of the hollow fiber membrane component is connected with the liquid inlet of the crystallization kettle. The device combines the microwave catalytic reaction and the reaction liquid purification process into a continuous operation process, saves the reaction time and improves the product purity and yield.
Description
Technical Field
The utility model belongs to the technical field of the microwave catalytic reaction, concretely relates to a microwave catalytic reaction unit for producing glucosamine hydrochloride.
Background
The microwave-assisted catalytic reaction technology can effectively improve the high efficiency and selectivity of the reaction, is simple and convenient to operate, has few byproducts, high yield and easy purification of products, and has the advantages of being widely applied to the reaction processes of proteolysis, organic synthesis, esterification and the like. A process for preparing D-aminoglucose hydrochloride by microwave-aided hydrolysis of chitin includes acidolysis of chitin and hydrochloride, ultrafiltering to obtain the hydrolyzed liquid, concentrating and crystallizing. In the preparation process, the microwave catalytic reaction process and the purification process are carried out separately, and the loss of the reaction liquid can be caused in the reaction liquid transfer process, so that the product yield is greatly reduced, and an efficient microwave-assisted catalytic reaction production device is urgently needed in order to improve the reaction efficiency.
Disclosure of Invention
To the problem that exists among the prior art, the to-be-solved technical problem of the utility model lies in providing a microwave catalytic reaction unit for producing glucosamine hydrochloride, the device adopts the supplementary chitin preparation glucosamine of hydrolysising of microwave, and the messenger's microwave of utilization can directly strengthen the molecular vibration, promotes the reaction process, and more importantly the device combines microwave catalytic reaction and reaction liquid purification process as a continuous operation process, practices thrift reaction time, improves product purity and yield.
In order to solve the above problem, the utility model adopts the following technical scheme:
a microwave catalytic reaction device for producing glucosamine hydrochloride comprises a microwave generator, a microwave catalytic reactor, a hollow fiber membrane component and a crystallization kettle, wherein the microwave catalytic reactor is arranged in the microwave generator, and a stirring device is arranged in the microwave catalytic reactor; the top of the microwave catalytic reactor is provided with a raw material liquid inlet and a catalyst liquid inlet, and the bottom of the microwave catalytic reactor is provided with a liquid outlet; the raw material liquid inlet is communicated with a raw material liquid inlet pipe, and the catalyst liquid inlet is communicated with a catalyst liquid inlet pipe; the liquid outlet is connected with the liquid inlet of the hollow fiber membrane component, and the liquid outlet of the hollow fiber membrane component is connected with the liquid inlet of the crystallization kettle.
The microwave catalytic reaction device for producing the glucosamine hydrochloride is characterized in that a first feeding pump and a first preheater are sequentially connected to a raw material liquid inlet pipe; and the catalyst liquid inlet pipe is sequentially connected with a second feed pump and a second preheater.
The microwave catalytic reaction device for producing the glucosamine hydrochloride comprises a motor, a stirring shaft and a stirring paddle; the motor is arranged at the top of the outer side of the microwave generator and connected with a stirring shaft, and the stirring shaft extends into the microwave catalytic reactor; the stirring rake is fixed in on the (mixing) shaft, the stirring rake includes vertical stirring rake and arc stirring rake, and wherein, vertical stirring rake is parallel with microwave catalytic reactor's lateral wall, and the arc stirring rake is parallel with microwave catalytic reactor's arc bottom.
The microwave catalytic reaction device for producing the glucosamine hydrochloride further comprises a guide plate, wherein one end of the guide plate is fixedly arranged on the stirring shaft, the other end of the guide plate is inclined downwards, and the guide plate is provided with a plurality of guide plates.
The microwave catalytic reaction device for producing the glucosamine hydrochloride is characterized in that the included angle between the guide plate and the horizontal plane is 30-60 degrees, and a plurality of guide holes are uniformly formed in the guide plate.
The microwave catalytic reaction device for producing the glucosamine hydrochloride is characterized in that the hollow fiber membrane component has a tubular structure.
Has the advantages that: compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses a microwave catalytic reaction unit for producing glucosamine hydrochloride adopts the supplementary chitin of hydrolysising of microwave to prepare the glucosamine, and the messenger microwave of utilization can directly strengthen the molecular vibration, promotes the reaction process, and more importantly the device combines microwave catalytic reaction and reaction liquid purification process as a continuous operation process, practices thrift reaction time, improves product purity and yield.
(2) The utility model discloses a stirring apparatus for producing microwave catalytic reaction unit of glucosamine hydrochloride adopts the stirring rake of special construction and the structure of guide plate inter combination, and the mixing of raw materials and catalyst is more even when the microwave reaction, makes reaction efficiency improve greatly, has industrialization application prospect.
Drawings
FIG. 1 is a schematic structural diagram of a microwave catalytic reaction device for producing glucosamine hydrochloride.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
A microwave catalytic reaction device for producing glucosamine hydrochloride has a structure shown in figure 1. As can be seen from figure 1, the device comprises a microwave generator 1, a microwave catalytic reactor 2, a hollow fiber membrane component 3 and a crystallization kettle 4, wherein the microwave catalytic reactor 2 is arranged in the microwave generator 1, and a stirring device is arranged in the microwave catalytic reactor 2; the top of the microwave catalytic reactor 2 is provided with a raw material liquid inlet and a catalyst liquid inlet, and the bottom is provided with a liquid outlet; the raw material liquid inlet is communicated with a raw material liquid inlet pipe 5, and the catalyst liquid inlet is communicated with a catalyst liquid inlet pipe 8; the liquid outlet is connected with the liquid inlet of the hollow fiber membrane component 3, and the liquid outlet of the hollow fiber membrane component 3 is connected with the liquid inlet of the crystallization kettle 4. The raw material liquid inlet pipe 5 is sequentially connected with a first feed pump 6 and a first preheater 7; the catalyst liquid inlet pipe 8 is connected with a second feeding pump 9 and a second preheater 10 in sequence.
The working process is as follows: under the action of a first feeding pump 6 and a second feeding pump 9, raw materials and catalysts are pumped into a first preheater 7 and a second preheater 10 to preliminarily heat the raw materials and the catalysts, then the raw materials and the catalysts are introduced into a microwave catalytic reactor 2 to perform microwave catalytic reaction under the action of a microwave generator 1, reaction liquid is introduced into a hollow fiber membrane component 3 after the reaction is finished, the reaction liquid is subjected to ultrafiltration, after impurities and macromolecular substances are filtered out, the solution is introduced into a crystallization kettle 4, and a final product glucosamine hydrochloride is obtained after concentration and crystallization.
The device adopts microwave-assisted hydrolysis chitin to prepare glucosamine, utilizes microwave to directly strengthen molecular vibration and promote the reaction process, and more importantly, the device combines the microwave catalytic reaction and the reaction liquid purification process into a continuous operation process, thereby saving the reaction time and improving the product purity and yield.
Example 2
A microwave catalytic reaction device for producing glucosamine hydrochloride has a structure shown in figure 1. As can be seen from figure 1, the device comprises a microwave generator 1, a microwave catalytic reactor 2, a tubular hollow fiber membrane component 3 and a crystallization kettle 4, wherein the microwave catalytic reactor 2 is arranged in the microwave generator 1, and a stirring device is arranged in the microwave catalytic reactor 2; the top of the microwave catalytic reactor 2 is provided with a raw material liquid inlet and a catalyst liquid inlet, and the bottom is provided with a liquid outlet; the raw material liquid inlet is communicated with a raw material liquid inlet pipe 5, and the catalyst liquid inlet is communicated with a catalyst liquid inlet pipe 8; the liquid outlet is connected with the liquid inlet of the hollow fiber membrane component 3, and the liquid outlet of the hollow fiber membrane component 3 is connected with the liquid inlet of the crystallization kettle 4. The raw material liquid inlet pipe 5 is sequentially connected with a first feed pump 6 and a first preheater 7; the catalyst liquid inlet pipe 8 is connected with a second feeding pump 9 and a second preheater 10 in sequence.
The stirring device comprises a motor 11, a stirring shaft 12, a stirring paddle 13 and a guide plate 14; the motor 11 is arranged at the top of the outer side of the microwave generator 1, the motor 11 is connected with the stirring shaft 12, and the stirring shaft 12 extends into the microwave catalytic reactor 2; stirring rake 13 is fixed in on the (mixing) shaft 12, and stirring rake 13 includes vertical stirring rake and arc stirring rake, and wherein, vertical stirring rake is parallel with microwave catalytic reactor 2's lateral wall, and the arc stirring rake is parallel with microwave catalytic reactor 2's arc bottom. The stirring paddle 13 is the same as the microwave generator 1 in structure, the stirring paddle 13 is attached to the inner wall of the stirring paddle to move, liquid adhered to the wall can be well cleaned, the utilization rate of raw materials is improved, and energy is saved. The stirring shaft 12 is provided with a plurality of guide plates 14, one end of each guide plate is fixedly arranged on the stirring shaft, the other end of each guide plate is inclined downwards, the included angle between each guide plate and the horizontal plane is 45 degrees, and a plurality of guide holes are uniformly formed in each guide plate; the guide plate can play a role in dispersing raw materials, the guide plate 14 is matched with the stirring paddle 13, the guide plate 14 disperses the raw materials to two side surfaces of the microwave catalytic reactor 2, and the stirring paddle 13 polymerizes the raw materials to the middle of the microwave catalytic reactor 2, so that the raw materials and the catalyst are stirred and mixed, and the microwave reaction efficiency is improved; the deflector holes may increase the flow velocity of the product.
The working process is as follows: under the action of a first feeding pump 6 and a second feeding pump 9, raw materials and catalysts are pumped into a first preheater 7 and a second preheater 10 to carry out primary heating on the raw materials and the catalysts, then the raw materials and the catalysts are introduced into a microwave catalytic reactor 2, and the raw materials and the catalysts are effectively stirred and mixed by a stirring device in a microwave generator 1, so that the microwave catalytic reaction is carried out more fully; and (3) after the reaction is finished, introducing the reaction liquid into the hollow fiber membrane component 3, performing ultrafiltration on the reaction liquid, filtering out impurities and macromolecular substances, introducing the solution into the crystallization kettle 4, and concentrating and crystallizing to obtain the final product glucosamine hydrochloride.
The device adopts microwave-assisted hydrolysis of chitin to prepare glucosamine, utilizes microwaves to directly strengthen molecular vibration and promote reaction process, and more importantly, the device combines microwave catalytic reaction and reaction liquid purification process into a continuous operation process, thereby saving reaction time and improving product purity and yield; the raw materials and the catalyst are mixed more uniformly during the microwave reaction, so that the reaction efficiency is greatly improved, and the method has an industrial application prospect.
Claims (6)
1. A microwave catalytic reaction device for producing glucosamine hydrochloride is characterized by comprising a microwave generator (1), a microwave catalytic reactor (2), a hollow fiber membrane component (3) and a crystallization kettle (4), wherein the microwave catalytic reactor (2) is arranged in the microwave generator (1), and a stirring device is arranged in the microwave catalytic reactor (2); the top of the microwave catalytic reactor (2) is provided with a raw material liquid inlet and a catalyst liquid inlet, and the bottom is provided with a liquid outlet; the raw material liquid inlet is communicated with a raw material liquid inlet pipe (5), and the catalyst liquid inlet is communicated with a catalyst liquid inlet pipe (8); the liquid outlet is connected with the liquid inlet of the hollow fiber membrane component (3), and the liquid outlet of the hollow fiber membrane component (3) is connected with the liquid inlet of the crystallization kettle (4).
2. The microwave catalytic reaction unit for producing glucosamine hydrochloride according to claim 1, wherein a first feeding pump (6) and a first preheater (7) are sequentially connected to the raw material liquid inlet pipe (5); and the catalyst liquid inlet pipe (8) is sequentially connected with a second feed pump (9) and a second preheater (10).
3. Microwave catalytic reaction unit for the production of glucosamine hydrochloride in accordance with claim 1, wherein the stirring device comprises a motor (11), a stirring shaft (12) and a stirring paddle (13); the motor (11) is arranged at the top of the outer side of the microwave generator (1), the motor (11) is connected with the stirring shaft (12), and the stirring shaft (12) extends into the microwave catalytic reactor (2); stirring rake (13) are fixed in on (mixing) shaft (12), stirring rake (13) are including vertical stirring rake and arc stirring rake, and wherein, vertical stirring rake is parallel with the lateral wall of microwave catalytic reactor (2), and the arc stirring rake is parallel with the arc bottom of microwave catalytic reactor (2).
4. The microwave catalytic reaction unit for producing glucosamine hydrochloride according to claim 3, wherein the stirring device further comprises a plurality of guide plates (14), one end of each guide plate (14) is fixed on the stirring shaft (12), and the other end of each guide plate is inclined downwards.
5. The microwave catalytic reaction device for producing glucosamine hydrochloride according to claim 4, wherein an included angle between the guide plate (14) and a horizontal plane is 30-60 degrees, and a plurality of guide holes are uniformly formed on the guide plate.
6. Microwave catalytic reactor for the production of glucosamine hydrochloride in accordance with claim 1, wherein the hollow fiber membrane module (3) is of tubular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120377302.6U CN214486846U (en) | 2021-02-19 | 2021-02-19 | Microwave catalytic reaction device for producing glucosamine hydrochloride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120377302.6U CN214486846U (en) | 2021-02-19 | 2021-02-19 | Microwave catalytic reaction device for producing glucosamine hydrochloride |
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| Publication Number | Publication Date |
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| CN214486846U true CN214486846U (en) | 2021-10-26 |
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| CN202120377302.6U Active CN214486846U (en) | 2021-02-19 | 2021-02-19 | Microwave catalytic reaction device for producing glucosamine hydrochloride |
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