Amino glucose processing agitator

Abstract

The utility model relates to amino glucose synthetic equipment technical field discloses a kind of stirring devices for amino glucose processing, including kettle body, multiple heat exchange pipes are communicated between the upside and downside of kettle body, multiple heat exchange pipes are distributed in circumferential array, the lower port of each heat exchange pipe is communicated with flow guide pipe, the upper end of multiple flow guide pipes is commonly communicated with annular air pipe, the utility model is mutually matched by centrifugal fan, heating module and heat exchange pipe, outside air is injected into heat exchange pipe by centrifugal fan, by heat transfer, heat exchange pipe can absorb the heat in kettle body to reach the effect of cooling, furthermore, the solution in kettle body can be heated by heating module, under the logic calculation control of industrial control panel, the temperature in kettle body can be always maintained at optimum chemical reaction temperature, reduce the occurrence of side reaction, with the advantage of making full use of material.

Description

Technical Field

[0001] This utility model relates to the technical field of reaction vessels for glucosamine processing, and in particular to a stirring device for glucosamine processing. Background Technology

[0002] The process of producing glucosamine from chitin via hydrolysis generally involves first soaking shrimp and crab shells in 5-7% hydrochloric acid for 18-24 hours to remove calcium, then boiling them in 3% sodium hydroxide solution to remove protein, and finally washing them with water until neutral and drying them. The pretreated chitin needs to be pulverized into solid particles of about 80 mesh to improve reaction efficiency. Then, the chitin particles are placed in a reactor containing hydrochloric acid, and the reaction temperature is raised to 90-110 degrees Celsius using a gradient method to avoid side reactions. The pressure is controlled within a reasonable range and maintained for 4-6 hours. However, existing reactors generally suffer from side reactions due to poor temperature control, resulting in low material utilization.

[0003] For example, a stirring device for processing glucosamine products is disclosed in Chinese utility model patent with announcement number CN223010312U. Although this solution can stir various raw materials of glucosamine to improve the stirring effect, when chitin particles are added to concentrated hydrochloric acid for reaction, a large amount of heat is released, causing the synthesis temperature in the reaction vessel to be too high, exceeding the optimal chemical reaction temperature of 90-110 degrees Celsius, triggering side reactions such as amino position isomerization, resulting in material waste.

[0004] In view of this, a stirring device for glucosamine processing is proposed to solve the above problems. Utility Model Content

[0005] To solve the technical problem of temperature control in the synthesis of glucosamine, this utility model provides a stirring device for glucosamine processing.

[0006] This utility model is achieved using the following technical solution: a stirring device for glucosamine processing, comprising a vessel body, wherein multiple heat exchange tubes are connected between the upper and lower sides of the vessel body, the multiple heat exchange tubes are arranged in a circumferential array, the lower end of each heat exchange tube is connected to a guide pipe, the upper ends of the multiple guide pipes are connected to an annular air duct, multiple centrifugal fans are installed on the upper side of the annular air duct, a stirring mechanism is provided on the inner side of the vessel body, a temperature gradient heating mechanism is provided on the outer side of the vessel body, a support is fixedly connected to the lower side of the vessel body, and a pressure stabilizing valve is installed on the upper side of the vessel body.

[0007] As a further improvement to the above solution, the stirring mechanism includes a servo motor installed on the upper side of the vessel body. The output end of the servo motor extends into the vessel body and is fixedly connected to a transmission rod. The lower end of the transmission rod is fixedly connected to a stirring impeller, and a filter mechanism is provided around the stirring impeller.

[0008] As a further improvement to the above solution, the filtration mechanism includes a collar fixedly connected to the outside of each heat exchange tube, and a filter screen cylinder is fixedly connected to one side of the plurality of collars that are close to each other. The filter screen cylinder extends from bottom to top and is sleeved around the transmission rod.

[0009] As a further improvement to the above solution, the gradient heating mechanism includes a heating module installed on the outside of the vessel body, and a heating rod is installed on the side of the heating module located inside the vessel body.

[0010] As a further improvement to the above solution, a feed pipe is connected to the upper side of the vessel body, and a discharge pipe is connected to the lower side of the vessel body.

[0011] As a further improvement to the above solution, an industrial control panel is installed on the outside of the vessel body. The industrial control panel has a built-in temperature sensor and is electrically connected to the heating module.

[0012] As a further improvement to the above solution, a baffle is provided at the upper end of each heat exchange tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model utilizes a centrifugal fan, a heating module, and a heat exchange tube in a coordinated manner. The centrifugal fan injects outside air into the heat exchange tube, which absorbs heat from the reactor through heat transfer, thereby achieving a cooling effect. In addition, the heating module can heat the solution inside the reactor. Under the logic calculation and control of the industrial control panel, the temperature inside the reactor can be maintained at the optimal chemical reaction temperature, reducing the occurrence of side reactions and making full use of the materials.

[0015] 2. This utility model uses a filter screen and a stirring impeller to work together. The filter screen can filter undissolved chitin. When the stirring impeller rotates, it can not only play a stirring role, but also inject the solution at the bottom into the filter screen. Large undissolved chitin particles are retained inside the filter screen and continue to react. In addition, the mesh on the filter screen can create a turbulent effect on the flow of the reaction solution, which is more conducive to the uniform mixing of the reaction solution. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a stirring device for processing glucosamine provided by this utility model;

[0017] Figure 2 for Figure 1 A bottom view;

[0018] Figure 3 for Figure 1 A sectional view;

[0019] Figure 4 This is a schematic diagram of the structure of the heat exchange tube and filter screen cylinder according to one embodiment of the present invention.

[0020] Explanation of key symbols:

[0021] 1. Support; 2. Annular air duct; 3. Centrifugal fan; 4. Industrial control panel; 5. Feed pipe; 6. Baffle; 7. Servo motor; 8. Pressure regulating valve; 9. Reactor body; 10. Heating module; 11. Guide pipe; 12. Discharge pipe; 13. Transmission rod; 14. Collar; 15. Agitator impeller; 16. Heat exchange tube; 17. Filter screen. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example:

[0024] Please combine Figures 1-3 The stirring device for processing glucosamine in this embodiment includes a vessel body 9. It should be noted that since the synthesis of glucosamine requires a 6 mol / L hydrochloric acid solution, the vessel body 9 is lined with enamel material to improve its corrosion resistance.

[0025] Please combine Figure 3 As shown, in this embodiment, three heat exchange tubes 16 are connected between the upper and lower sides of the vessel body 9. The three heat exchange tubes 16 are arranged in a circumferential array, and an enlarged area structure is provided on the outside of the heat exchange tubes 16.

[0026] Please combine Figure 3 As shown, the lower end of each heat exchange tube 16 is connected to a guide tube 11, and the upper ends of the three guide tubes 11 are connected to an annular air duct 2. Two centrifugal fans 3 are installed on the upper side of the annular air duct 2. The number of fans installed in the annular air duct 2 can be adjusted and set according to the heat dissipation requirements. Through the annular air duct 2 and the guide tube 11, the airflow to the inside of the vessel body 9 can be more uniform and the heat dissipation can be more balanced.

[0027] Please combine Figure 3As shown, a stirring mechanism is provided on the inner side of the vessel body 9, a temperature gradient heating mechanism is provided on the outer side of the vessel body 9, a support 1 is fixedly connected to the lower side of the vessel body 9, and a pressure regulating valve 8 is installed on the upper side of the vessel body 9. When the pressure inside the vessel body 9 is high, the pressure can be released through the pressure regulating valve 8 to maintain pressure balance. Under normal circumstances, the pressure required for chitin synthesis can be maintained at 0.1-0.2 MPa. High pressure can accelerate the reaction.

[0028] Please combine Figure 3 The stirring mechanism includes a servo motor 7 mounted on the upper side of the vessel body 9. The output end of the servo motor 7 extends into the vessel body 9 and is fixedly connected to a transmission rod 13. The lower end of the transmission rod 13 is fixedly connected to a stirring impeller 15, and a filter mechanism is provided around the stirring impeller 15.

[0029] Please combine Figure 4 As shown, the filtration mechanism includes a collar 14 fixedly connected to the outside of each heat exchange tube 16, the collar 14 providing a supporting and fixing function;

[0030] Please combine Figure 4 As shown, a filter cylinder 17 is fixedly connected to one side of the three collars 14 that are close to each other. The filter cylinder 17 has a mesh size of less than 80 mesh and can filter chitin particles. The filter cylinder 17 extends from bottom to top and is sleeved around the transmission rod 13.

[0031] The gradient heating mechanism includes a heating module 10 installed on the outside of the vessel body 9. A heating rod is installed on the side of the heating module 10 located inside the vessel body 9. Practice has shown that gradient heating to 90-110℃ can avoid the occurrence of side reactions.

[0032] Please combine Figure 1 As shown, the upper side of the vessel body 9 is connected to the feed pipe 5, and the lower side of the vessel body 9 is connected to the discharge pipe 12.

[0033] Please combine Figure 1 As shown, an industrial control panel 4 is installed on the outside of the vessel body 9. The industrial control panel 4 has a built-in temperature sensor and is electrically connected to the heating module 10. When the temperature sensor in the industrial control panel 4 detects that the reaction temperature inside the vessel body 9 exceeds the set optimal catalyst reaction temperature, it sends an electronic signal to the industrial control panel 4. The logic calculation unit on the industrial control panel 4 sends a command to the heating module 10 to reduce the heating power. At the same time, it sends a command to the centrifugal fan 3 to increase the working power of the centrifugal fan 3 and accelerate the airflow of cold air from the outside into the annular air duct 2. This increases the cold airflow inside each heat exchange tube 16, expands the air cooling effect, and thus achieves the effect of cooling the solution inside the vessel body 9, jointly promoting the temperature of the reaction solution to approach the optimal chemical reaction temperature.

[0034] Please combine Figure 1As shown, each heat exchange tube 16 is provided with a baffle 6 at its upper end, which can prevent foreign objects from entering the heat exchange tube 16.

[0035] The implementation principle of the stirring device for glucosamine processing in this embodiment is as follows: hydrochloric acid solution and chitin particles are added to the reactor body through the feed pipe 5. Then, the heating module 10 and servo motor 7 are started through the industrial control panel 4. The servo motor 7 drives the stirring impeller 15 to rotate. When the hydrochloric acid solution reacts with the chitin and releases heat, causing the solution reaction temperature to exceed 110 degrees Celsius, the centrifugal fan 3 is started. The cold air from the outside is injected into the heat exchange tube 16 along the annular air duct 2 and the guide pipe 11. This can absorb and carry away the heat in the reactor body 9, thereby achieving a cooling effect. Under the logical calculation control of the industrial control panel 4, the start and stop of the centrifugal fan 3 and the heating module 10 are coordinated to ensure that the reaction is always at the optimal reaction temperature.

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A stirring device for processing of glucosamine, comprising a kettle (9), characterized in that, Multiple heat exchange tubes (16) are connected between the upper and lower sides of the vessel body (9). The multiple heat exchange tubes (16) are arranged in a circular array. The lower end of each heat exchange tube (16) is connected to a guide pipe (11). The upper ends of the multiple guide pipes (11) are connected to an annular air duct (2). Multiple centrifugal fans (3) are installed on the upper side of the annular air duct (2). A stirring mechanism is provided on the inner side of the vessel body (9). A temperature gradient heating mechanism is provided on the outer side of the vessel body (9). A support (1) is fixedly connected to the lower side of the vessel body (9). A pressure stabilizing valve (8) is installed on the upper side of the vessel body (9).

2. A mixing device for processing glucosamine as claimed in claim 1, characterized in that, The stirring mechanism includes a servo motor (7) installed on the upper side of the vessel body (9). The output end of the servo motor (7) extends into the vessel body (9) and is fixedly connected to a transmission rod (13). The lower end of the transmission rod (13) is fixedly connected to a stirring impeller (15). A filter mechanism is provided around the stirring impeller (15).

3. A mixing device for processing glucosamine as claimed in claim 2, wherein, The filtration mechanism includes a collar (14) fixedly connected to the outside of each heat exchange tube (16), and a filter cylinder (17) is fixedly connected to one side of the plurality of collars (14) that are close to each other. The filter cylinder (17) extends from bottom to top and is sleeved around the transmission rod (13).

4. A mixing device for processing glucosamine as claimed in claim 1, wherein, The temperature gradient heating mechanism includes a heating module (10) installed on the outside of the vessel body (9), and a heating rod is installed on one side of the heating module (10) located inside the vessel body (9).

5. A mixing device for processing glucosamine as claimed in claim 1, wherein, The upper side of the vessel body (9) is connected to a feed pipe (5), and the lower side of the vessel body (9) is connected to a discharge pipe (12).

6. A mixing device for processing glucosamine as claimed in claim 4, wherein, An industrial control panel (4) is installed on the outside of the vessel body (9). The industrial control panel (4) has a built-in temperature sensor and is electrically connected to the heating module (10).

7. A mixing device for processing glucosamine as claimed in claim 1, wherein, Each of the heat exchange tubes (16) is provided with a baffle (6) at its upper end.

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