Cyclodextrin conversion reaction device

Abstract

The utility model belongs to the technical field of production devices, and particularly relates to a cyclodextrin conversion reaction device which comprises a reaction kettle and a buffer tank connected with the reaction kettle, a raw material opening is formed in the top of the reaction kettle, a stirrer is arranged in the reaction kettle and penetrates through the top of the reaction kettle to be connected with a motor, and a feeding opening is formed in the bottom of the reaction kettle. A liquid distributor is arranged at the lower part of the inner side of the reaction kettle and is connected with the feeding hole, a suction pipe is arranged in the reaction kettle in a surrounding manner, a plurality of through holes are formed in the suction pipe, the suction pipe is connected with the top of a buffer tank through a pipeline, a nitrogen pipeline is arranged on the buffer tank, and the bottom of the buffer tank is connected with the feeding hole through a pipeline. According to the method, the cyclodextrin conversion reaction is carried out in a countercurrent circulation manner, so that the contact area of cyclodextrin and a chemical additive can be increased, and the conversion efficiency of cyclodextrin is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of production devices, and specifically relates to a cyclodextrin conversion reaction device. Background Art

[0002] The main raw material of cyclodextrin is starch, including corn starch and potato starch. In the process of producing cyclodextrin, the raw materials need to be preliminarily processed to obtain starch granules, which are then fermented and converted to obtain the target cyclodextrin. The cyclodextrin product is then obtained through purification, crystallization, drying and other steps.

[0003] The cyclodextrin production conversion process refers to the process of converting cyclodextrin into other forms of cyclodextrin or related compounds through enzymatic or other chemical methods. Chemical additives need to be added in this process to improve the conversion rate. Chemical additives are generally insoluble in water and have a density lower than that of water. They will float on the water surface and have a limited contact area with cyclodextrin. The most commonly used cyclodextrin production equipment currently includes a tank, a stirring component, and a heating and cooling component. These components cannot effectively improve the contact area between the chemical additives and the reaction raw materials, and the reaction stirring process will also affect the binding of the enzyme and the starch substrate, affecting the efficiency. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a cyclodextrin conversion reaction device to increase the contact area between the chemical auxiliary agent and the reaction raw materials, increase the contact time between the enzyme and the substrate, and improve the conversion rate.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The cyclodextrin conversion reaction device described in the utility model comprises a reactor and a buffer tank connected to the reactor, a raw material port is arranged on the top of the reactor, a stirrer is arranged in the reactor, the stirrer passes through the top of the reactor and is connected to a motor, a feed port is arranged on the bottom of the reactor, a liquid distributor is arranged on the lower inner side of the reactor, the liquid distributor is connected to the feed port, a back-suction pipe is arranged around the inside of the reactor, a plurality of through holes are arranged on the back-suction pipe, the back-suction pipe is connected to the top of the buffer tank through a pipeline, a nitrogen pipeline is arranged on the buffer tank, and the bottom of the buffer tank is connected to the feed port through a pipeline.

[0007] in:

[0008] The liquid distributor and the back-suction pipe are both fixed on the inner wall of the reaction kettle.

[0009] The return suction pipe comprises a plurality of ring pipes which are arranged in a circular ring shape as a whole and a vertically arranged connecting pipe.

[0010] The plurality of ring tubes are arranged at intervals on the connecting tube, the plurality of ring tubes are connected to each other through the connecting tube, and a plurality of through holes are arranged on the ring tubes.

[0011] The back-suction pipe is arranged around the outside of the stirrer, and the width of the stirrer is smaller than the inner diameter of the back-suction pipe.

[0012] The top of the buffer tank is provided with a buffer tank inlet, and the bottom of the buffer tank is provided with a buffer tank outlet.

[0013] The outlet of the buffer tank is connected to the feed port, and the inlet of the buffer tank is connected to the back-suction pipe.

[0014] A second material pump is arranged on the pipeline connecting the inlet of the buffer tank and the return suction pipe, and a first material pump is arranged on the pipeline connecting the outlet of the buffer tank and the feed port.

[0015] The nitrogen pipeline is arranged through the top of the buffer tank, extends to the lower inner part of the buffer tank and is fixed on the inner wall of the buffer tank.

[0016] The liquid distributor is overall in the shape of a disc and is located below the return suction pipe.

[0017] The beneficial effects of the utility model are:

[0018] The utility model performs cyclodextrin conversion reaction in a countercurrent circulation manner, can increase the contact area between cyclodextrin and chemical additives, and improve the conversion efficiency of cyclodextrin. By arranging a back suction pipe in the reactor, reaction liquids with different liquid level heights in the reactor can be sucked into a buffer tank, and fully mixed in the buffer tank, and then transported back to the reactor, thereby improving the reaction efficiency of the reaction raw materials and the chemical additives and the mixing time of the enzyme and the starch substrate, thereby achieving full conversion of cyclodextrin. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the return suction pipe of the utility model.

[0021] In the figure: 1. Reactor; 2. Raw material inlet; 3. Agitator; 4. Liquid distributor; 5. Motor; 6. Feed inlet; 7. Back-suction pipe; 8. Nitrogen pipeline; 9. Buffer tank; 10. Buffer tank inlet; 11. Material pump 1; 12. Buffer tank outlet; 13. Material pump 2; 701. Ring pipe; 702. Connecting pipe. DETAILED DESCRIPTION

[0022] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 1-2 As shown, a cyclodextrin conversion reaction device comprises a reactor 1 and a buffer tank 9 connected to the reactor 1, a raw material port 2 is arranged on the top of the reactor 1, a stirrer 3 is arranged inside the reactor 1, the stirrer 3 passes through the top of the reactor 1 and is connected to a motor 5, a feed port 6 is arranged on the bottom of the reactor 1, a liquid distributor 4 is arranged on the lower inner side of the reactor 1, the liquid distributor 4 is connected to the feed port 6, a back-suction pipe 7 is arranged around the inside of the reactor 1, a plurality of through holes are arranged on the back-suction pipe 7, the back-suction pipe 7 is connected to the top of the buffer tank 9 through a pipeline, a nitrogen pipeline 8 is arranged on the buffer tank 9, and the bottom of the buffer tank 9 is connected to the feed port 6 through a pipeline.

[0025] The reaction raw materials and chemical additives can be fully mixed through the reactor 1 and the buffer tank 9, thereby improving the conversion efficiency of cyclodextrin. The liquid distributor 4 can disperse the evenly mixed buffer in the buffer tank 9 and then transport it to the reactor 1 for full reaction.

[0026] The liquid distributor 4 and the suction pipe 7 are both fixed on the inner wall of the reaction kettle 1 .

[0027] The suction return pipe 7 includes a plurality of annular pipes 701 which are arranged in an annular shape as a whole and a vertically arranged connecting pipe 702 .

[0028] A plurality of annular tubes 701 are arranged on the connecting tube 702 at intervals. The plurality of annular tubes 701 are connected to each other through the connecting tube 702 . A plurality of through holes are arranged on the annular tube 701 .

[0029] The back-suction pipe 7 is arranged around the outside of the stirrer 3 , and the width of the stirrer 3 is smaller than the inner diameter of the back-suction pipe 7 .

[0030] The stirrer 3 does not contact the back-suction pipe 7 during stirring, and the back-suction pipe 7 can suck the reaction liquid at different liquid levels after stirring into the buffer tank 9 .

[0031] A buffer tank inlet 10 is provided at the top of the buffer tank 9 , and a buffer tank outlet 12 is provided at the bottom of the buffer tank 9 .

[0032] The buffer tank outlet 12 is connected to the feed port 6 , and the buffer tank inlet 10 is connected to the suction return pipe 7 .

[0033] A material pump 2 13 is provided on the pipeline connecting the buffer tank inlet 10 and the back-suction pipe 7 , and a material pump 1 11 is provided on the pipeline connecting the buffer tank outlet 12 and the feed port 6 .

[0034] The nitrogen pipeline 8 is arranged to penetrate the top of the buffer tank 9 , and the nitrogen pipeline 8 extends to the lower inner part of the buffer tank 9 and is fixed on the inner wall of the buffer tank 9 .

[0035] Nitrogen is delivered into the buffer tank 9 through the nitrogen pipeline 8 for bubbling, so that the reaction liquid in the buffer tank 9 can be fully stirred.

[0036] The liquid distributor 4 is in a disc shape as a whole and is located below the suction pipe 7 .

[0037] Working principle and process:

[0038] During the conversion of cyclodextrin, reaction raw materials and chemical additives are added into the reactor 1 through the raw material port 2, and then the motor 5 is turned on to drive the stirrer 3 to stir, and at the same time, the material pump 13 is turned on so that the through hole set on the ring tube 701 can suck the reaction liquid at different liquid levels in the reactor 1 into the buffer tank 9 through the connecting pipe 702, and the nitrogen pipeline 8 is turned on to fully stir it, and then the material pump 11 is turned on to transport the buffer solution in the buffer tank 9 back to the reactor 1, and the buffer solution is dispersed into fine droplets through the liquid distributor 4, and then mixed with the reaction liquid in the reactor 1 to improve the conversion efficiency of cyclodextrin. Repeating the operation continuously allows the reaction liquid to circulate.

Claims

1. A cyclodextrin conversion reaction device, comprising a reactor (1) and a buffer tank (9) connected to the reactor (1), characterized in that: A raw material inlet (2) is provided at the top of the reactor (1), a stirrer (3) is provided in the reactor (1), the stirrer (3) penetrates the top of the reactor (1) and is connected to a motor (5), a feed inlet (6) is provided at the bottom of the reactor (1), a liquid distributor (4) is provided at the lower inner part of the reactor (1), the liquid distributor (4) is connected to the feed inlet (6), a return suction pipe (7) is provided around the inside of the reactor (1), a plurality of through holes are provided on the return suction pipe (7), the return suction pipe (7) is connected to the top of a buffer tank (9) through a pipeline, a nitrogen pipeline (8) is provided on the buffer tank (9), and the bottom of the buffer tank (9) is connected to the feed inlet (6) through a pipeline.

2. The cyclodextrin conversion reaction device according to claim 1, characterized in that: The liquid distributor (4) and the suction pipe (7) are both fixed on the inner wall of the reaction kettle (1).

3. The cyclodextrin conversion reaction device according to claim 1, characterized in that: The return suction pipe (7) comprises a plurality of ring pipes (701) arranged in a circular ring shape as a whole and a connecting pipe (702) arranged vertically.

4. The cyclodextrin conversion reaction device according to claim 3, characterized in that: A plurality of annular tubes (701) are arranged at intervals on the connecting tube (702); the plurality of annular tubes (701) are connected to each other via the connecting tube (702); and a plurality of through holes are arranged on the annular tube (701).

5. The cyclodextrin conversion reaction device according to claim 1, characterized in that: The return suction pipe (7) is arranged around the outside of the stirrer (3), and the width of the stirrer (3) is smaller than the inner diameter of the return suction pipe (7).

6. The cyclodextrin conversion reaction device according to claim 1, characterized in that: A buffer tank inlet (10) is provided at the top of the buffer tank (9), and a buffer tank outlet (12) is provided at the bottom of the buffer tank (9).

7. The cyclodextrin conversion reaction device according to claim 6, characterized in that: The buffer tank outlet (12) is connected to the feed port (6), and the buffer tank inlet (10) is connected to the suction pipe (7).

8. The cyclodextrin conversion reaction device according to claim 7, characterized in that: A second material pump (13) is provided on a pipeline connecting the buffer tank inlet (10) and the return suction pipe (7), and a first material pump (11) is provided on a pipeline connecting the buffer tank outlet (12) and the feed port (6).

9. The cyclodextrin conversion reaction device according to claim 1, characterized in that: The nitrogen pipeline (8) is arranged to penetrate the top of the buffer tank (9), and the nitrogen pipeline (8) extends to the lower inner part of the buffer tank (9) and is fixed to the inner wall of the buffer tank (9).

10. The cyclodextrin conversion reaction device according to claim 1, characterized in that: The liquid distributor (4) is arranged in a disk shape as a whole, and is located below the return suction pipe (7).

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