A transesterification apparatus for producing a vegetable oil-based emulsifier

Abstract

The utility model relates to a chemical industry mechanical equipment field especially, relates to a kind of ester exchange equipment for vegetable oil-based emulsifier production, including tank body, the tank body top is equipped with feed inlet, tank body bottom is equipped with discharge gate, the temperature regulating system is arranged in the tank body;The tank body top is installed with stirring motor, the output shaft of stirring motor is connected with stirring shaft, the stirring shaft is provided with stirring vane, the stirring vane includes the helical stirring vane of top layer, the stirring vane of pulp of middle layer and the anchor stirring vane located in bottom layer;The temperature regulating system includes high temperature layer located at the tank body top, constant temperature layer located at the tank body middle and cooling layer located at the tank body bottom.The ester exchange equipment of the application can reduce the adhesion of material to the inner wall of equipment and stirring device during production, thereby improving the uniformity of material distribution, reaction conversion rate and the quality of final product.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery and equipment, and in particular to an ester exchange device for the production of vegetable oil-based emulsifiers. Background Technology

[0002] Vegetable oil-based emulsifiers, such as monoglycerides (mono-fatty acid glycerides, GMS), are important emulsifiers in the food, cosmetics, and pharmaceutical industries, and are typically produced through transesterification.

[0003] The precursors used in the production of vegetable oil-based emulsifiers usually have high viscosity. During dynamic mixing and reaction, due to the combined effects of fluid dynamics (such as centrifugal effect) and intermolecular adhesion, an adhesive layer is often formed on the inner wall of the reactor and the surface of the stirring mechanism.

[0004] Traditional transesterification equipment mainly consists of a reaction vessel body, a stirring system, and a temperature control system. However, during the transesterification process, especially when processing high-viscosity materials, viscous materials tend to adhere to the inner wall and the surface of the stirring device. This not only leads to raw material loss but also creates localized temperature anomalies ("hot spots" or "cold spots"). Furthermore, these adhered substances disrupt the temperature uniformity and material distribution uniformity of the reaction system, thereby reducing the reaction conversion rate and affecting product quality. Utility Model Content

[0005] To address the problems mentioned above, this invention provides an ester exchange device for the production of vegetable oil-based emulsifiers, which can reduce the adhesion of materials to the inner wall of the device and the stirring device during the production process, thereby improving the uniformity of material distribution, reaction conversion rate and final product quality.

[0006] The solution adopted by this utility model to solve its technical problem is: a transesterification device for the production of vegetable oil-based emulsifiers, including a tank, a feed inlet at the top of the tank, a discharge outlet at the bottom of the tank, and a temperature control system installed inside the tank;

[0007] A stirring motor is installed on the top of the tank. The output shaft of the stirring motor is connected to a stirring shaft. The stirring shaft is equipped with stirring blades, which include a top spiral stirring blade, a middle paddle-shaped stirring blade, and a bottom anchor-shaped stirring blade.

[0008] The temperature control system includes a high-temperature layer at the top of the tank, a constant-temperature layer in the middle of the tank, and a cooling layer at the bottom of the tank.

[0009] Furthermore, the spiral stirring blades are constructed with micro-hydrophobic textures through laser microtexturing and have a superhydrophobic surface.

[0010] Furthermore, an annular air pipe and a pulse airflow generator are provided on the outer edge of the top of the tank. The surface of the annular air pipe is evenly distributed with micro air holes, and the annular air pipe and the pulse airflow generator are connected by an air path.

[0011] Furthermore, the diameter of the micropores is 0.2-0.5 mm.

[0012] Furthermore, the discharge port is equipped with a viscometer.

[0013] The stirring device of the ester exchange equipment of this application has a layered design. The spiral blades at the top layer can carry out axial flow, promote the downward movement of materials, and avoid accumulation at the top. The slurry blades in the middle layer can generate radial shear force, enhance the dispersion effect of materials, and prevent material agglomeration and adhesion to the wall. The anchor-shaped stirring blades can prevent material deposition and avoid coking or solidification at the bottom. Through the above design, efficient mixing of materials can be achieved, and material agglomeration and adhesion can be reduced.

[0014] The temperature control device is a zoned temperature control system, including a high-temperature layer, a constant-temperature layer, and a cooling layer. The high-temperature layer can accelerate the transesterification reaction, quickly melt the raw materials, and prevent unmelted particles from adhering to the inner wall; the constant-temperature layer can maintain the stability of the intermediate; and the cooling layer can quickly terminate the reaction and prevent over-reaction.

[0015] In summary, the beneficial effects of this utility model are as follows: This application, through the synergistic effect of the layered design of the stirring device and the zoned temperature control system of the temperature control device, can reduce the adhesion of materials to the inner wall of the equipment and the stirring device during the production process, and improve the reaction conversion rate of the materials.

[0016] In addition, the ester exchange equipment of this application is also equipped with an auxiliary anti-sticking design - an annular gas pipe and a pulsed gas flow generator. The annular gas pipe can generate airflow to impact the inner wall adhesion layer, avoid mechanical scraping contamination, and reduce the adhesion of sticky materials to the equipment, thereby further improving the quality of the reaction product.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is the front view of this embodiment;

[0019] Figure 2 This is a cross-sectional view of this embodiment;

[0020] Figure 3 This is a schematic diagram of the structure of this embodiment.

[0021] In the diagram: 1. Tank body; 11. Inlet; 12. Outlet; 2. Viscometer; 3. Temperature control system; 31. High temperature layer; 32. Constant temperature layer; 33. Cooling layer; 4. Stirring motor; 41. Stirring shaft; 42. Spiral stirring blade; 43. Paddle stirring blade; 44. Anchor stirring blade; 5. Annular air pipe; 51. Micro air hole; 6. Pulse airflow generator. Detailed Implementation

[0022] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0023] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise stated, "a plurality of" means two or more.

[0024] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figures 1 to 3 As shown, the equipment in this embodiment is a transesterification device for producing vegetable oil-based emulsifiers, including a tank (1) and a control system for adjusting the equipment's operating data. The top of the tank (1) has a feed inlet (11) for adding vegetable oil, glycerin, and other reaction raw materials. The bottom of the tank (1) has a discharge outlet (12) for discharging reaction products. Specifically, as shown... Figure 2 As shown, the tank (1) in this embodiment has a double-layer design, including an inner tank and an outer tank. The inner tank is made of 316L stainless steel, and its material contact part is mirror polished to reduce material adhesion and residue. The outer tank is made of 304 stainless steel jacket and forms a cavity with the inner tank. A temperature control system (3) is installed in the cavity.

[0026] The temperature control system (3) includes a high-temperature layer (31) at the top of the tank (1), a constant-temperature layer (32) in the middle of the tank (1), and a cooling layer (33) at the bottom of the tank (1). The high-temperature layer (31) is located at the top of the tank (1) and consists of a steam pipe surrounding the outer side of the inner tank. It rapidly heats up by introducing saturated steam at 134-165°C. This design effectively promotes the transesterification reaction, ensures complete melting of the raw materials, and prevents unmelted particles from depositing on the inner wall. The constant-temperature layer (32) is located in the middle of the tank (1) and uses a hot water pipe structure. It maintains a constant temperature by introducing hot water at 90-95°C. Through this design, the constant-temperature layer (32) can maintain the stability of the intermediate. The cooling layer (33) is located at the bottom of the tank (1) and rapidly cools down through cooling water or ethylene glycol aqueous solution pipes. Through this design, the cooling layer (33) can quickly terminate the reaction and prevent excessive reaction of the product.

[0027] like Figure 3 As shown, in this embodiment, a stirring motor (4) is installed on the top of the tank (1). The output shaft of the stirring motor (4) is connected to a stirring shaft (41). The stirring shaft (41) is provided with stirring blades, which include a top spiral stirring blade (42), a middle paddle stirring blade, and a bottom anchor stirring blade (44). Specifically, the spiral stirring blade (42) is located in the high-temperature layer (31) region, the paddle stirring blade is located in the constant temperature layer (32) region, and the anchor stirring blade is located in the cooling layer (33) region.

[0028] In another embodiment, the surface of the helical stirring blade (42) is constructed with micro-hydrophobic textures through laser microtexturing. The micro-hydrophobic textures are composite textures formed by a combination of 10-50 μm micrometer-level groove structures and 200-500 nm nanometer-level protrusions. The micro-hydrophobic textures can form an air cushion effect on the surface of the stirring blades, reducing the adhesion of materials, especially high-viscosity materials such as oils or glycerol mixtures. In addition, the helical stirring blade (42) is coated with a superhydrophobic surface by sol-gel method or vapor deposition. The superhydrophobic surface is a SiO2 nanocomposite coating.

[0029] like Figure 3 As shown, an annular gas pipe (5) and a pulsed airflow generator (6) are provided on the outer edge of the top of the tank (1). The surface of the annular gas pipe (5) is uniformly distributed with micro-pores (51), the diameter of which is 0.2-0.5 mm. The annular gas pipe (5) and the pulsed airflow generator (6) are connected by a gas path. Through the above design, the annular gas pipe (5) can generate airflow to impact the adhesion layer on the inner wall of the tank (1), avoiding mechanical scratching and contamination, and reducing the adhesion of sticky materials to the equipment, thereby further improving the quality of the reaction product.

[0030] The discharge port (12) of this embodiment is equipped with a linear vibratory viscometer (2). The linear vibratory viscometer (2) can insert the probe into the material and generate vibration to measure the viscous resistance, detect the viscosity data, and feed it back to the speed control system of the stirring motor (4).

[0031] The embodiments described above 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 modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. A transesterification device for the production of vegetable oil-based emulsifiers, characterized in that, The tank includes a tank body, with a feed inlet at the top and a discharge outlet at the bottom, and a temperature control system installed inside the tank body. A stirring motor is installed on the top of the tank. The output shaft of the stirring motor is connected to a stirring shaft. The stirring shaft is equipped with stirring blades, which include a top spiral stirring blade, a middle paddle-shaped stirring blade, and a bottom anchor-shaped stirring blade. The temperature control system includes a high-temperature layer at the top of the tank, a constant-temperature layer in the middle of the tank, and a cooling layer at the bottom of the tank.

2. The transesterification equipment for producing vegetable oil-based emulsifiers according to claim 1, characterized in that, The spiral stirring blades are constructed with micro-hydrophobic textures through laser microtexturing and have a superhydrophobic surface.

3. The transesterification equipment for producing vegetable oil-based emulsifiers according to claim 1, characterized in that, The outer edge of the top of the tank is provided with an annular air pipe and a pulse airflow generator. The surface of the annular air pipe is uniformly distributed with micro air holes, and the annular air pipe and the pulse airflow generator are connected by an air path.

4. The transesterification equipment for producing vegetable oil-based emulsifiers according to claim 3, characterized in that, The diameter of the micropores is 0.2-0.5 mm.

5. The transesterification equipment for producing vegetable oil-based emulsifiers according to claim 1, characterized in that, The discharge port is equipped with a viscometer.

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