Lipase catalyzed preparation of sucrose fatty acid ester reaction kettle
By employing a combination of a screw feeder and a glass condenser in the lipase-catalyzed sucrose fatty acid ester preparation reactor, the sealed storage and uniform conveying of sucrose are achieved, solving the problems of reaction instability and moisture absorption caused by manual addition, and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WEILAN BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-29
AI Technical Summary
In the industrial production of sucrose fatty acid esters catalyzed by lipase, the manual addition of sucrose presents problems such as difficulty in slow and uniform feeding and easy moisture absorption, leading to unstable reactions and affecting product quality and efficiency.
A reaction vessel for the preparation of sucrose fatty acid esters catalyzed by lipase was designed. A combination of a screw feeder and a glass condenser was used to achieve sealed storage and uniform conveying of sucrose, avoiding moisture absorption and clumping. The evaporated solvent was condensed and refluxed through the glass condenser to maintain reaction stability and dryness.
It effectively solves the problem of stable and uniform feeding of sucrose in the reactor, improves product quality and production efficiency, reduces impurity content, and meets the quality requirements of high-end application fields.
Smart Images
Figure CN224299248U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sucrose fatty acid ester production technology, specifically relating to a lipase-catalyzed reaction vessel for preparing sucrose fatty acid esters. Background Technology
[0002] In the industrial production of sucrose fatty acid esters catalyzed by lipase, the reactor, as the core reaction equipment, plays a crucial role in production efficiency and product quality due to the technological level of its material feeding process. Currently, most companies in the industry still rely heavily on manual feeding when adding sucrose raw materials to the reactor.
[0003] Manually adding sucrose is difficult to do slowly and evenly. Because manual operation is greatly affected by subjective factors such as operator experience and fatigue, the addition speed is prone to fluctuations. When the addition speed is too fast, a large amount of sucrose enters the reactor instantly. Under limited stirring conditions, it is difficult to disperse quickly and evenly in the reaction system, resulting in incomplete dissolution and localized high concentrations. This not only prevents lipase from fully contacting the substrate, reducing its catalytic efficiency, but also causes excessively vigorous local reactions within the reaction system, affecting the controllability of the reaction and leading to unstable product quality and difficulty in accurately controlling the proportions of various components in the product. Conversely, an excessively slow addition speed prolongs the reaction time, reduces production efficiency, and increases energy costs.
[0004] Furthermore, during the manual addition of sucrose, the sugar inevitably comes into prolonged contact with air due to its prolonged exposure. Sucrose is highly hygroscopic, absorbing moisture from the air during this process. This moisture causes the sucrose particles to stick together and even clump, further complicating dissolution upon entering the reaction vessel and severely impacting its dispersion and solubility in the reaction system. More importantly, the introduction of moisture alters the original chemical environment of the reaction system, disrupting its equilibrium. On one hand, excessive moisture promotes lipase-catalyzed hydrolysis side reactions, shifting the reaction towards the formation of fatty acids and glycerol, reducing the amount of the target product, sucrose fatty acid esters, and lowering the yield. On the other hand, moisture alters the polarity of the reaction system, affecting the activity and conformation of lipase, leading to decreased catalytic performance, poorer reaction selectivity, increased impurity content in the product, and reduced product purity, making it difficult to meet the stringent quality requirements of high-end applications. Utility Model Content
[0005] To address the above problems, the purpose of this utility model is to provide a reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters, which solves the problems of slow and uniform feeding and easy moisture absorption when manually adding sucrose in the current industrial production of lipase-catalyzed preparation of sucrose fatty acid esters.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lipase-catalyzed reaction vessel for preparing sucrose fatty acid esters, comprising a reaction vessel, a support mounted on the side of the reaction vessel, a top flange mounted on the top of the reaction vessel, the bottom end of a feed pipe connected to the top end of the feed pipe connected to the discharge port of a glass condenser, the outlet of the glass condenser connected to one end of a three-way pipe, the other two ends of the three-way pipe connected to an exhaust pipe and a return pipe respectively, the return pipe connected to a storage tank, the storage tank being rotatably connected to one end of a lid via a hinge, the other end of the lid and the storage tank being fitted with a latch, the bottom end of the storage tank connected to the inlet of a screw feeder, and the outlet of the screw feeder connected to the side of the feed pipe.
[0007] The beneficial effects of this utility model are as follows: the storage box stores sucrose in a sealed manner relative to the outside air, which effectively ensures the stability and dryness of the sucrose reaction during the process of the screw feeder conveying sucrose into the reaction vessel at a uniform speed; the glass condenser can effectively condense and reflux the solvent evaporated during the feeding process, and prevent the solvent from entering the storage box and causing sucrose to clump.
[0008] To prevent the liquefied solvent from flowing back into the glass condenser from entering the screw feeder;
[0009] As a further improvement to the above technical solution: the outer diameter of the outlet of the glass condenser is not greater than the inner diameter of the feed pipe.
[0010] The beneficial effect of this improvement is that when the solvent condensed and liquefied in the glass condenser flows back into the inside of the feed pipe under the action of gravity, it does not come into contact with the inner wall of the feed pipe, thereby preventing the solvent from flowing into the screw feeder and causing the material in the screw feeder to clump together.
[0011] To prevent the vaporized solvent rising in the feed pipe from entering the screw feeder;
[0012] As a further improvement to the above technical solution: the conveying pipe in the screw feeder is gradually inclined upward in the direction towards the feed pipe.
[0013] The beneficial effect of this improvement is that, since the end of the screw feeder's conveying pipe connected to the feed pipe is at the top, the rising gas in the feed pipe will not be diverted into the screw feeder, thus preventing the material in the screw feeder from clumping.
[0014] To effectively ensure the airtightness of the sugar stored in the storage bins;
[0015] As a further improvement to the above technical solution: the number of the latches is two, and they are arranged opposite each other on the lid and the storage box.
[0016] The beneficial effects of this improvement are: the two sets of latches can securely connect the lid and the storage box, preventing the sugar from absorbing moisture due to prolonged contact between outside air and the sugar.
[0017] In order to efficiently transport sucrose to the reaction vessel via the screw feeder;
[0018] As a further improvement to the above technical solution: the bottom of the storage box is a tapered groove structure that tapers gradually, and the bottom of the storage box is connected to the feed port of the screw feeder through a variable diameter pipe that is wider at the top and narrower at the bottom.
[0019] The beneficial effect of this improvement is that the sucrose in the storage bin can smoothly fall into the screw feeder along the conical bottom surface of the storage bin, thereby achieving efficient conveying of sucrose.
[0020] To ensure the balance of air pressure inside and outside the storage tank during the feeding process of the screw feeder;
[0021] As a further improvement to the above technical solution: the return air pipe is connected to the top side of the storage tank.
[0022] The beneficial effects of this improvement are: when the storage tank and the lid are kept in a relatively sealed connection and materials are supplied to the screw feeder, the gas in the reactor is condensed and dried by the glass condenser and then flows back to the storage tank, effectively ensuring the gas pressure balance inside the storage tank.
[0023] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0026] Figure 3 This is the front view of the present invention;
[0027] In the diagram: 1. Reactor; 2. Support; 3. Top flange; 4. Feed pipe; 5. Glass condenser; 6. T-pipe; 7. Return gas pipe; 8. Storage tank; 9. Tank cover; 10. Lock; 12. Screw feeder. Detailed Implementation
[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.
[0029] Example 1:
[0030] like Figure 1 As shown in Figure 3: A reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters includes a reaction vessel 1. A support 2 is mounted on the side of the reaction vessel 1, and a top flange 3 is mounted on the top of the reaction vessel 1. The top flange 3 is connected to the bottom end of a feed pipe 4, and the top end of the feed pipe 4 is connected to the discharge port of a glass condenser 5. The outlet of the glass condenser 5 is connected to one end of a three-way pipe 6, and the other two ends of the three-way pipe 6 are respectively connected to an exhaust pipe and a return pipe 7. The return pipe 7 connects to a storage tank 8, and the storage tank 8 is rotatably connected to one end of a tank cover 9 via a hinge. A latch 10 is installed on the other end of the tank cover 9 and the storage tank 8. The bottom of the storage tank 8 is connected to the inlet of the screw feeder 12, and the outlet of the screw feeder 12 is connected to the side of the feed pipe 4. The storage tank 8 is sealed relative to the outside air to store sucrose, so that the screw feeder 12 can effectively ensure the stability and dryness of the sucrose reaction during the process of uniformly conveying sucrose into the reactor 1. The glass condenser 5 can effectively condense and reflux the solvent evaporated during the feeding process, avoiding the solvent from entering the storage tank 8 and causing sucrose to clump. The outer diameter of the outlet of the glass condenser 5 is not greater than the inner diameter of the feed pipe 4. When the condensed and liquefied solvent in the glass condenser 5 falls back into the inside of the feed pipe 4 under the action of gravity, The material does not contact the inner wall of the feed pipe 4, thus preventing solvent from flowing into the screw feeder 12 and causing material agglomeration. The feed pipe in the screw feeder 12 is gradually inclined upwards towards the feed pipe 4. Since the end of the feed pipe of the screw feeder 12 connected to the feed pipe 4 is at the top, the rising gas in the feed pipe 4 will not be diverted into the screw feeder 12, causing material agglomeration. There are two latches 10, which are arranged opposite each other on the cover 9 and the storage box 8. The two sets of latches 10 can securely connect the cover 9 and the storage box 8, preventing outside air from mixing with the material. Prolonged contact with sucrose causes it to absorb moisture. The bottom of the storage tank 8 is a tapered groove structure that tapers towards the bottom. The bottom of the storage tank 8 is connected to the inlet of the screw feeder 12 through a variable diameter pipe that is wider at the top and narrower at the bottom. The sucrose in the storage tank 8 can fall smoothly into the screw feeder 12 along the tapered bottom surface of the storage tank 8, thereby achieving effective conveying of the sucrose. The return gas pipe 7 is connected to the top side of the storage tank 8. When the storage tank 8 and the cover 9 are in a relatively sealed connection and the material is supplied to the screw feeder 12, the gas in the reaction vessel 1 is condensed and dried by the glass condenser 5 and then flows back to the storage tank 8, effectively ensuring the gas pressure balance inside the storage tank 8.
[0031] The working principle of this technical solution is as follows: Open the storage box 8 and rotate the cover 9 connected by a hinge, put the sucrose material into the storage box 8, and then close the cover 9. Use two locks 10 arranged on the left and right sides to tightly connect the cover 9 and the storage box 8 to form a storage space that is relatively sealed from the outside air, preventing the sucrose from absorbing moisture from the air and becoming damp during storage. Start the screw feeder 12. Due to its tapered groove structure that gradually narrows at the bottom and the variable diameter pipe connection design that is wider at the top and narrower at the bottom, the sucrose in the storage box 8 can fall smoothly into the screw feeder 12. The conveying pipe in the screw feeder 12 is gradually inclined upward in the direction of the feed pipe 4. This structure allows the sucrose to be conveyed evenly and stably to the feed pipe 4 under the push of the screw blades, and then enter the reaction vessel 1. During the feeding process, since the end of the conveying pipe of the screw feeder 12 connected to the feed pipe 4 is at the top position, it effectively avoids the feed pipe from getting wet. The vaporized solvent rising from the feed pipe 4 enters the screw feeder 12 to prevent material agglomeration from affecting the conveying and reaction. During the reaction in the reactor 1, the vaporized solvent rises through the feed pipe 4 to the glass condenser 5. Since the outer diameter of the outlet of the glass condenser 5 is not greater than the inner diameter of the feed pipe 4, the solvent condensed and liquefied in the glass condenser 5 will not come into contact with the inner wall of the feed pipe 4 when it flows back into the feed pipe 4 under the action of gravity, thus avoiding the solvent flowing into the screw feeder 12 and causing material agglomeration. After the gas in the reactor 1 is condensed and dried by the glass condenser 5, it flows back to the top side of the storage tank 8 through another passage of the three-way pipe 6 and the return gas pipe 7. This design ensures that the gas pressure inside the storage tank 8 is balanced when the storage tank 8 and the cover 9 are sealed and the material is supplied to the screw feeder 12, so that the sucrose can be smoothly conveyed to the reactor 1, maintaining the continuity and stability of the entire reaction process.
[0032] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.
Claims
1. A reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters, characterized in that: The reactor includes a reactor (1), a support (2) is installed on the side of the reactor (1), a tank top flange (3) is installed on the top of the reactor (1), the tank top flange (3) is connected to the bottom end of the feed pipe (4), the top end of the feed pipe (4) is connected to the discharge port of the glass condenser (5), the outlet of the glass condenser (5) is connected to one end of the three-way pipe (6), the other two ends of the three-way pipe (6) are respectively connected to the exhaust pipe and the return pipe (7), the return pipe (7) is connected to the storage tank (8), the storage tank (8) is connected to one end of the box cover (9) by a hinge, the other end of the box cover (9) and the storage tank (8) are equipped with a latch (10), the bottom end of the storage tank (8) is connected to the feed port of the screw feeder (12), and the discharge port of the screw feeder (12) is connected to the side of the feed pipe (4).
2. The reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters according to claim 1, characterized in that: The outer diameter of the outlet of the glass condenser (5) is not greater than the inner diameter of the feed pipe (4).
3. The reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters according to claim 1, characterized in that: The feed pipe in the screw feeder (12) is gradually inclined upward in the direction of the feed pipe (4).
4. The reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters according to claim 1, characterized in that: The number of the latches (10) is two, and they are arranged opposite each other on the lid (9) and the storage box (8).
5. The reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters according to claim 1, characterized in that: The bottom of the storage box (8) is a tapered groove structure that tapers gradually. The bottom of the storage box (8) is connected to the feed port of the screw feeder (12) through a variable diameter pipe that is wider at the top and narrower at the bottom.
6. The reaction vessel for the lipase-catalyzed preparation of sucrose fatty acid esters according to claim 1, characterized in that: The return air pipe (7) is connected to the top side of the storage box (8).