Device for deacidifying grease by enzyme method

Abstract

The utility model relates to a device for deacidifying grease by an enzyme method, and belongs to the technical field of grease refining. According to the system device, the enzyme reaction device, the enzyme recovery tank, the disc centrifuge, the temporary storage tank, the heating kettle and the like are arranged to construct the system device special for the grease enzyme method deacidification, and the grease biological enzyme method is used as a basic mode for deacidification, so that the defects of the traditional deacidification method can be avoided; the enzyme method has the advantages of mild reaction conditions, no pollution discharge, high catalytic efficiency, small loss of grease accompanying substances and the like, has the advantages of energy conservation and environmental protection when being applied to the field of grease deacidification, and is also provided with intelligent control equipment and an ultrasonic oscillator in an auxiliary manner, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a device for enzymatic deacidification of oil, belonging to the technical field of oil refining. Background Art

[0002] At present, the common deacidification methods of oil mainly include chemical caustic refining, miscella caustic refining, chemical esterification, physical deacidification (distillation deacidification, solvent extraction deacidification, membrane separation deacidification, etc.) and enzymatic deacidification, etc. Chemical caustic refining can deacidify thoroughly, but the loss of neutral oil and functional lipid concomitants is large, and a large amount of industrial wastewater is generated, which is not suitable for deacidification of high acid value oil; Miscella caustic refining can deacidify thoroughly without generating industrial wastewater, but the loss of neutral oil is large, the equipment investment cost is high, and the process is cumbersome; Chemical esterification has a good deacidification effect, but there are many by-products, and the deacidification temperature is high, increasing the risk of generating lipid risk factors, and the quality of the oil after deacidification is poor; Distillation deacidification has less loss of neutral oil, but high energy consumption, high requirement for the phosphorus content of raw materials, increasing the risk of generating lipid risk factors; Solvent extraction deacidification has a good effect, but the process is cumbersome, multiple extractions are required, and the loss of neutral oil is large; Membrane separation deacidification has mild separation temperature, low energy consumption, energy conservation and environmental protection, but the membrane separation speed is slow and the membrane is easily polluted; However, enzymatic deacidification has the advantages of mild reaction conditions, high deacidification efficiency, good effect, environmental protection, high retention rate of neutral oil and functional lipid concomitants, etc., and is the main development direction in the field of oil deacidification. However, at present, the enzymatic deacidification devices on the market need to be manually controlled for the feeding and discharging of the reaction tank frequently, and the efficiency is not high.

[0003] In the prior art, the device structures for enzymatic deacidification of oil shown in CN114736739B, CN114736739B, etc. are mostly used. Although their structures promote the combination of lipase and free fatty acid through the deacidification reaction under the catalysis of free lipase, they have defects such as long reaction time, incomplete reaction and complex operation procedures; Moreover, in the actual production process, it is difficult to control indexes such as the change of ion concentration, and there will also be phenomena such as uneven nitrogen bubbles being introduced, resulting in limited production quality and reduced working efficiency. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a device for enzymatic deacidification of oil, including:

[0005] An enzyme reaction device, the interior of the enzyme reaction device includes a feeding chamber, a stirring chamber connected in sequence from top to bottom, and a stirring device penetrating through the feeding chamber and the stirring chamber. The feeding chamber has a feeding port communicating with the outside, and a feeding disc device is arranged between the feeding chamber and the stirring chamber; The stirring chamber has a discharging port, an exhaust port, a circulating water inlet, a circulating water outlet, a nitrogen inlet, and a high acid value oil inlet communicating with the outside. The discharging port includes a first discharging port and a second discharging port, and a rotating wave wheel disc and an ultrasonic oscillator are arranged inside the stirring chamber;

[0006] An enzyme recovery tank, connected to the second discharge port of the stirring chamber;

[0007] A disc centrifuge, connected to the first discharge port of the stirring chamber, the disc centrifuge having a light phase outlet and a heavy phase outlet;

[0008] A temporary storage tank, connected to the heavy phase outlet of the disc centrifuge;

[0009] A heating kettle, connected to the light phase outlet of the disc centrifuge.

[0010] Further, a conductivity sensor and a liquid level sensor are provided in the feed chamber.

[0011] Further, the feed tray device includes a feed tray and a first feed coil pipe, a second feed coil pipe, a first high-pressure nozzle, and a second high-pressure nozzle provided on the feed tray. The first feed coil pipe and the second feed coil pipe are concentric circular coil pipes with different diameters; the first high-pressure nozzle and the second high-pressure nozzle are provided inside the first feed coil pipe or the second feed coil pipe.

[0012] Further, the stirring device includes a stirring shaft passing through the feed chamber and the stirring chamber, a first stirring paddle and a second stirring paddle located in the stirring chamber and mounted on the stirring shaft. The first stirring paddle is above the second stirring paddle, and the rotary wave wheel disc is between the first stirring paddle and the second stirring paddle. The rotation directions of the first stirring paddle and the second stirring paddle are set to be opposite to the rotation direction of the rotary wave wheel disc. The reason for setting the directions to be opposite is to increase the degree of chaos of the reaction substrate and thus accelerate the reaction process.

[0013] Further, the first stirring paddle and the second stirring paddle are respectively a four-blade propeller type and an anchor blade type, and the rotation speeds are both 60 - 100 rpm.

[0014] Further, there are two ultrasonic oscillators, symmetrically arranged in the stirring chamber below the rotary wave wheel disc.

[0015] Further, the rotary wave wheel disc has a spiral convex structure, and a number of circular through holes are evenly distributed on the spiral convex structure, and the diameter of the through holes is 0.5 - 1 cm.

[0016] Further, the feed chamber is connected to an intelligent control device, and the intelligent control device is connected to the conductivity sensor and the liquid level sensor.

[0017] Further, the intelligent control device is provided with a plurality of delivery pumps, and the function is to perform intelligent sample injection through multiple channels based on the information fed back by the conductivity sensor.

[0018] The beneficial effects of the present utility model:

[0019] 1. The utility model constructs a system device dedicated to enzymatic deacidification of oils and fats by setting up an enzyme reaction device, an enzyme recovery tank, a disc centrifuge, a temporary storage tank, a heating kettle, etc. Using the enzymatic method of oils and fats as the basic method for deacidification can avoid the deficiencies of traditional deacidification methods. The enzymatic method has the advantages of mild reaction conditions, no pollution emissions, high catalytic efficiency, and small loss of oil accompaniments. Applying it to the field of oil deacidification has the advantages of energy conservation and environmental protection. Moreover, the utility model is also assisted with intelligent control equipment and ultrasonic oscillators to improve production efficiency.

[0020] 2. The conductivity sensor set by the utility model can be used to detect the change of ion concentration in the liquid. During the process of oil deacidification, as the free fatty acid molecules decrease, the conductivity of the feed liquid will also change accordingly. Therefore, the utility model introduces the conductivity sensor into the enzymatic deacidification process, monitors the reaction process through the conductivity sensor, and then cooperates with the intelligent control equipment to realize the automatic feeding and discharging of the reaction system, improving production efficiency; the function of setting the liquid level sensor is to detect the liquid level height and prevent the feed liquid from overflowing.

[0021] 3. Since the two substrates, glycerol and oil, are not miscible during the enzymatic deacidification process, the utility model can introduce nitrogen through the nitrogen inlet to promote the contact of the substrates. At the same time, the utility model introduces the ultrasonic oscillator into the enzymatic deacidification process. Using ultrasonic waves to reduce the size of the introduced nitrogen bubbles and increase the specific surface area can accelerate the enzymatic esterification reaction, improve the deacidification efficiency, and the two ultrasonic oscillators are symmetrically arranged, which can further improve the uniform fragmentation of the nitrogen bubbles introduced into the feed liquid and improve the reaction rate. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0023] Figure 2 It is a top view of the enzyme reaction device in an embodiment of the utility model;

[0024] Figure 3 It is a top view of the rotary wave wheel disc in an embodiment of the utility model;

[0025] Figure 4 It is a top view of the feed tray in an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the intelligent control equipment in an embodiment of the utility model.

[0027] In the figure: 1. Enzyme reaction device; 2. Intelligent control device; 3. Conductivity sensor; 4. Feeding tray; 5. Ultrasonic oscillator; 6. Nitrogen inlet; 7. High acid value oil inlet; 8. Rotary wave wheel disc; 9. First discharge port; 10. Second discharge port; 11. Enzyme recovery tank; 12. Disc centrifuge; 13. Light phase outlet; 14. Heavy phase outlet; 15. Temporary storage tank; 16. Heating kettle; 17. First stirring paddle; 18. Feeding port; 19. Exhaust port; 20. Circulating water inlet; 21. Circulating water outlet; 22. Liquid level sensor; 23. Second stirring paddle; 201. Delivery pump; 401. First high-pressure spray head; 402. Second high-pressure spray head; 403. First feeding coil; 404. Second feeding coil. Detailed implementation mode

[0028] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Embodiment 1

[0032] The present utility model provides a device for enzymatic deacidification of oil, including:

[0033] Enzyme reaction device 1, inside which includes a feeding chamber, a stirring chamber connected in sequence from top to bottom, and a stirring device penetrating through the feeding chamber and the stirring chamber. The feeding chamber has a feeding port 18 communicating with the outside, and a feeding disc device is arranged between the feeding chamber and the stirring chamber; the stirring chamber has a discharging port, an exhaust port 19, a circulating water inlet 20, a circulating water outlet 21, a nitrogen inlet 6, and a high acid value oil inlet 7 communicating with the outside. The discharging port includes a first discharging port 9 and a second discharging port 10. Inside the stirring chamber, a rotating wave wheel disc 8 and an ultrasonic oscillator 5 are arranged;

[0034] Enzyme recovery tank 11, connected to the second discharging port 10 of the stirring chamber;

[0035] Butterfly centrifuge 12, connected to the first discharging port 9 of the stirring chamber. The disc centrifuge 12 has a light phase outlet and a heavy phase outlet;

[0036] Temporary storage tank 15, connected to the heavy phase outlet 14 of the disc centrifuge 12. The temporary storage tank 15 is used to recover unreacted glycerol;

[0037] Heating kettle 16, connected to the light phase outlet 13 of the disc centrifuge 12.

[0038] Furthermore, a conductivity sensor 3 and a liquid level sensor 22 are arranged in the feeding chamber.

[0039] Furthermore, the feeding disc device includes a feeding disc 4 and a first feeding coil pipe 403, a second feeding coil pipe 404, a first high-pressure nozzle 401, and a second high-pressure nozzle 402 arranged on the feeding disc 4. The first feeding coil pipe 403 and the second feeding coil pipe 404 are concentric circular coil pipes with different diameters; the first high-pressure nozzle 401 and the second high-pressure nozzle 402 are arranged inside the first feeding coil pipe 403 or the second feeding coil pipe 404.

[0040] Furthermore, the stirring device includes a stirring shaft penetrating through the feeding chamber and the stirring chamber, a first stirring paddle 17 and a second stirring paddle 23 located in the stirring chamber and installed on the stirring shaft. The first stirring paddle 17 is above the second stirring paddle 23. The rotating wave wheel disc 8 is located between the first stirring paddle 17 and the second stirring paddle 23. The rotating directions of the first stirring paddle 17 and the second stirring paddle 23 are set to be opposite to the rotating direction of the rotating wave wheel disc 8. The reason for setting the directions to be opposite is to increase the degree of chaos of the reaction substrates and thus accelerate the reaction process.

[0041] Furthermore, the first stirring paddle 17 and the second stirring paddle 23 are respectively a four-blade propeller type and an anchor type paddle blade, and their rotation speeds are both 60 - 100 rpm.

[0042] Further, there are two ultrasonic oscillators 5, which are symmetrically arranged in the stirring chamber below the rotary wave wheel disc 8. The ultrasonic oscillator 5 is set to intermittent ultrasound, and nitrogen is intermittently introduced to prevent excessive nitrogen in the system and avoid affecting the rapid progress of the reaction.

[0043] Further, the rotary wave wheel disc 8 has a spiral convex structure, and a number of circular through holes are evenly distributed on the spiral convex structure, and the diameter of the through holes is 0.5 - 1 cm.

[0044] Further, the feed chamber is connected to an intelligent control device 2, and the intelligent control device 2 is connected to a conductivity sensor 3 and a liquid level sensor 22.

[0045] Further, the intelligent control device 2 is provided with four delivery pumps 201. The four delivery pumps 201 are respectively connected to a first feed coil 403, a second feed coil 404, a first high-pressure nozzle 401, and a second high-pressure nozzle 402 through four feed ports 18 at the top of the feed chamber. The function is to perform intelligent sampling through multiple channels based on the information fed back by the conductivity sensor.

[0046] The working principle of the present utility model:

[0047] The feed liquid is fed through the feed tray 4 provided at the top of the enzyme reaction device 1. Since the acid value of the substrate in the system is relatively high at the initial stage of the reaction, the intelligent control device 2 turns on two of the delivery pumps 201 based on the feedback information of the conductivity sensor 7, and the two substrates, glycerol and high-acid-value oil, are respectively fed into the enzyme reaction device 1 in small amounts through the first high-pressure nozzle 401 and the second high-pressure nozzle 402 for reaction; when the reaction proceeds for a period of time and the acid value of the system drops to the required value, at this time, more reaction substrates need to be added to the system. The intelligent control device 2 turns on the other two delivery pumps 201 based on the feedback information of the conductivity sensor 7, and the two substrates, glycerol and high-acid-value oil, are respectively fed into the enzyme reaction device 1 in large amounts through the first feed coil 403 and the second feed coil 404 for reaction; when the liquid level in the enzyme reaction device 1 reaches the liquid level sensor 22, the intelligent control device 2 receives the signal and turns off all the delivery pumps to stop feeding; when the acid value of the reaction system drops to the final required acid value, the intelligent control device 2 opens the first discharge port, and the feed liquid enters the disc centrifuge for centrifugation. The unreacted glycerol enters the temporary storage tank 15 through the heavy phase outlet 14, and the feed liquid enters the heating kettle 16 through the light phase outlet 13 to remove water to obtain deacidified oil.

[0048] Meanwhile, during the reaction process of the feed liquid, the ultrasonic oscillator 5 provided at the bottom of the enzyme reaction device 1 is turned on. The ultrasonic waves make the size of the nitrogen bubbles introduced smaller and the specific surface area larger, accelerating the enzymatic esterification reaction; at the same time, a rotary wave wheel disc 8 is arranged above the ultrasonic oscillator 5, and small holes are opened on it. The nitrogen bubbles are evenly distributed in the feed liquid by rotation.

[0049] Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Anyone who is familiar with this technology can make various modifications and alterations without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims

1. A device for enzymatic deacidification of oils and fats, characterized in that: include: An enzyme reaction device, wherein the enzyme reaction device comprises a feed chamber and a stirring chamber connected in sequence from top to bottom and a stirring device penetrating the feed chamber and the stirring chamber, the feed chamber has a feed port connected to the outside, and a feed disk device is arranged between the feed chamber and the stirring chamber; the stirring chamber has a discharge port connected to the outside, an exhaust port, a circulating water inlet, a circulating water outlet, a nitrogen inlet, and a high acid value oil inlet, the discharge port comprises a first discharge port and a second discharge port, and a rotating impeller disk and an ultrasonic oscillator are arranged inside the stirring chamber; an enzyme recovery tank connected to the second discharge port of the stirring chamber; A disc centrifuge connected to the first discharge port of the stirring chamber, wherein the disc centrifuge has a light phase outlet and a heavy phase outlet; A temporary storage tank connected to the heavy phase outlet of the disc centrifuge; The heating kettle is connected to the light phase outlet of the disc centrifuge.

2. The device for enzymatic deacidification of oils and fats according to claim 1, characterized in that: The feed chamber is provided with a conductivity sensor and a liquid level sensor.

3. The device for enzymatic deacidification of oils and fats according to claim 2, characterized in that: The feed tray device includes a feed tray and a first feed coil, a second feed coil, a first high-pressure nozzle, and a second high-pressure nozzle arranged on the feed tray. The first feed coil and the second feed coil are concentric circular coils with different diameters; the first high-pressure nozzle and the second high-pressure nozzle are arranged on the inner side of the first feed coil or the second feed coil.

4. The device for enzymatic deacidification of oils and fats according to claim 3, characterized in that: The stirring device includes a stirring shaft passing through the feeding chamber and the stirring chamber, a first stirring paddle and a second stirring paddle located in the stirring chamber and installed on the stirring shaft, the first stirring paddle is located above the second stirring paddle, the rotating impeller disk is located between the first stirring paddle and the second stirring paddle, and the rotation direction of the first stirring paddle and the second stirring paddle is set to be opposite to the rotation direction of the rotating impeller disk.

5. The device for enzymatic deacidification of oils and fats according to claim 4, characterized in that: The first stirring paddle and the second stirring paddle are respectively a four-blade propeller and an anchor-type paddle, and the rotation speeds of the first stirring paddle and the second stirring paddle are both 60-100 rpm.

6. The device for enzymatic deacidification of oils and fats according to claim 5, characterized in that: The ultrasonic oscillators are two and are symmetrically arranged in the stirring chamber below the rotating wave wheel.

7. The device for enzymatic deacidification of oils and fats according to claim 6, characterized in that: The rotating impeller has a spiral convex structure, and a plurality of circular through holes are evenly distributed on the spiral convex structure.

8. The device for enzymatic deacidification of oils and fats according to claim 7, characterized in that: The feed chamber is connected with an intelligent control device, and the intelligent control device is connected with a conductivity sensor and a liquid level sensor.

9. The device for enzymatic deacidification of oils and fats according to claim 8, characterized in that: The intelligent control device is provided with a plurality of delivery pumps.

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