High-VE fatty acid extraction device

Abstract

The utility model discloses a high-VE fatty acid extraction device and belongs to the technical field of VE production and processing. The problem of low content of fatty acid VE in the existing deodorization process is solved. According to the technical scheme, the outlet end of a centrifugal pump is sequentially communicated with shell passes of first to third heat exchangers, the shell pass outlet end of the third heat exchanger is communicated with the inlet end of a heater, the outlet end of the heater is communicated with the lower portion of a trapping tower, and the lower portion outlet end in the trapping tower is communicated with the tube pass inlet end of the third heat exchanger; the tube pass outlet end of the third heat exchanger is communicated with the upper inlet end of the deodorization tower, the lower outlet end of the deodorization tower is communicated with the inlet end of the shield pump, the outlet end of the shield pump is sequentially communicated with the tube pass of the second heat exchanger and the tube pass of the first heat exchanger, the tube pass outlet of the first heat exchanger is communicated with the cooling tank, and the vacuum system is communicated with the trapping tower and the deodorization tower. According to the utility model, the extraction effect of vitamin E is improved, a large amount of vitamin E with higher boiling point is extracted, and the VE content in fatty acid is indirectly increased.

Description

Technical Field

[0001] The utility model relates to a fatty acid extraction device, in particular to a high-VE fatty acid extraction device, and belongs to the technical field of VE production and processing. Background Art

[0002] The soybean oil that has been squeezed and leached contains rich natural vitamin E and is accompanied by various "peculiar smells". The vitamin E and "peculiar smell" substances in the oil will be extracted from the oil in the form of fatty acids. In the deodorization process of the oil refining process, the deodorized oil to be deodorized must first be heated to 235-245°C by heat exchange and heating equipment, and then enter the packed tower and plate tower for distillation, and the "peculiar smell" substances and vitamin E in the deodorized oil are evaporated by steam stripping. Because the boiling point of vitamin E is higher than that of various "peculiar smell" components in the oil, the traditional production process is mainly to extract "peculiar smell" components. Vitamin E exists in fatty acids as a by-product, and the vitamin E content in fatty acids is not high. With the demand for natural vitamin E in recent years, the value of vitamin E has also been rising. Therefore, it is urgent to propose a high VE fatty acid extraction device to solve the above technical problems. Utility Model Content

[0003] In view of the above facts, in order to solve the problem of low VE content of fatty acids in the existing deodorization process, the utility model provides a high VE fatty acid extraction device to improve the extraction effect of vitamin E, extract a large amount of vitamin E with a high boiling point, and indirectly increase the VE content in fatty acids.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-VE fatty acid extraction device comprises a centrifugal pump, a first heat exchanger, a second heat exchanger, a third heat exchanger, a heater, a deodorizing tower, a shielded pump, a vacuum system, a cooling tank, a circulating pump, a cooler, a collecting tank and a capturing tower;

[0006] The outlet end of the centrifugal pump is connected with the shell side of the first heat exchanger, the shell side of the second heat exchanger and the shell side of the third heat exchanger in sequence, the shell side outlet end of the third heat exchanger is connected with the inlet end of the heater, the outlet end of the heater is connected with the lower part of the capture tower, a liquid distributor and a multi-layer demister are provided in the upper part of the capture tower, an isolation filler is provided in the lower part of the capture tower, the inlet end of the collecting tank is connected with the inside of the capture tower, the outlet end of the collecting tank is connected with the inlet end of the circulating pump, the outlet end of the circulating pump is connected with the inlet end of the cooler, the outlet end of the cooler is connected with the liquid distributor in the capture tower, the lower outlet end in the capture tower is connected with the tube side inlet end of the third heat exchanger, the tube side outlet end of the third heat exchanger is connected with the upper inlet end of the deodorizing tower, the lower outlet end of the deodorizing tower is connected with the inlet end of the shielded pump, the outlet end of the shielded pump is connected with the tube side of the second heat exchanger and the tube side of the first heat exchanger in sequence, the tube side outlet of the first heat exchanger is connected with the cooling tank, and the vacuum system is connected with the capture tower and the deodorizing tower.

[0007] Furthermore: the deodorizing tower is a plate-type deodorizing tower.

[0008] Furthermore: the demister is a wire mesh demister.

[0009] Furthermore: the vacuum system adopts a freezing vacuum system to provide a vacuum degree below 1 mbar.

[0010] The effects achieved by the utility model are:

[0011] The utility model discloses a high-VE fatty acid extraction device, which can improve the extraction effect of vitamin E, extract a large amount of vitamin E with a relatively high boiling point, and indirectly increase the VE content in fatty acids. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall schematic diagram of a high VE fatty acid extraction device of the utility model;

[0013] Figure 2 This is the process flow chart of high VE fatty acid extraction.

[0014] Among them: 1-centrifugal pump, 2-first heat exchanger, 3-second heat exchanger, 4-third heat exchanger, 5-heater, 6-isolation filler, 7-deodorization tower, 8-shielded pump, 9-vacuum system, 10-cooling tank, 11-circulation pump, 12-cooler, 13-collecting tank, 14-capture tower, 15-liquid distributor, 16-demister. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0016] The terms "disposed", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Example: See Figure 1 and Figure 2 A high VE fatty acid extraction device of the present embodiment comprises a centrifugal pump 1, a first heat exchanger 2, a second heat exchanger 3, a third heat exchanger 4, a heater 5, a deodorizing tower 7, a shielded pump 8, a vacuum system 9, a cooling tank 10, a circulating pump 11, a cooler 12, a collecting tank 13 and a capturing tower 14; the deodorizing tower 7 is a plate-type deodorizing tower; the demister 16 is a wire mesh demister; the vacuum system 9 adopts a refrigeration vacuum system; the circulating pump 11, the cooler 12, the collecting tank 13 and the capturing tower 14 constitute a fatty acid capturing system;

[0020] The outlet end of the centrifugal pump 1 is connected to the shell side of the first heat exchanger 2, the shell side of the second heat exchanger 3, and the shell side of the third heat exchanger 4 in sequence. The shell side outlet end of the third heat exchanger 4 is connected to the inlet end of the heater 5. The outlet end of the heater 5 is connected to the lower part of the capture tower 14. The upper part of the capture tower 14 is provided with a liquid distributor 15 and a multi-layer demister 16. The lower part of the capture tower 14 is provided with an isolation filler 6. The inlet end of the collection tank 13 is connected to the inside of the capture tower 14. The outlet end of the collection tank 13 is connected to the inlet end of the circulation pump 11. The outlet end of the circulation pump 11 is connected to the inlet end of the circulation pump 11. It is connected to the inlet end of the cooler 12, the outlet end of the cooler 12 is connected to the liquid distributor 15 in the capture tower 14, the lower outlet end in the capture tower 14 is connected to the tube side inlet end of the third heat exchanger 4, the tube side outlet end of the third heat exchanger 4 is connected to the upper inlet end of the deodorizing tower 7, the lower outlet end of the deodorizing tower 7 is connected to the inlet end of the shielded pump 8, the outlet end of the shielded pump 8 is connected to the tube side of the second heat exchanger and the tube side of the first heat exchanger in sequence, the tube side outlet of the first heat exchanger is connected to the cooling tank 10, and the vacuum system 9 is connected to the capture tower 14 and the deodorizing tower 7.

[0021] The use process of the high VE fatty acid extraction device of the utility model is: start the centrifugal pump 1, the decolorized oil to be deodorized is successively passed through the first heat exchanger 2 and the second heat exchanger 3 to heat the hot oil coming out of the deodorization tower 7 to above 215°C, the heated oil to be deodorized continues to pass through the third heat exchanger 4 to heat it to above 230°C, then enters the heater 5 for secondary heating to above 250°C and then enters the isolation filler 6, the high-temperature oil and fat in the capture tower are mixed with the stripping steam, in this process a large amount of vitamin E is extracted under the action of the vacuum system 9, the deodorized oil after the first stripping enters the third heat exchanger 4 and is rapidly cooled with the oil to be deodorized, the deodorized oil after the first cooling enters the deodorization tower 7 for secondary stripping, a part of the vitamin E is extracted secondary under the action of the vacuum system 9, the deodorized oil after the reaction in the deodorization tower 7 passes through the shielded pump 8 and successively enters the second heat exchanger 3 and the first heat exchanger 2 to heat and cool the oil to be deodorized, and then enters the cooling tank 10 for cooling and storage. The specific process steps are as follows:

[0022] A01: The oil to be deodorized entering the deodorization tower is heat exchanged with the high-temperature oil and fat from the deodorization tower and the collection tower through the first heat exchanger, the second heat exchanger, and the third heat exchanger (the third heat exchanger adopts a high-efficiency heat exchanger) respectively, and the temperature is raised to above 230°C before entering the heater to provide the optimal temperature for the deodorization reaction;

[0023] A02: After heat exchange, the deodorized oil enters the heater for secondary heating, and enters the capture tower after the temperature reaches the required temperature of the high VE fatty acid extraction system;

[0024] A03: As the amount of stripping steam is larger than that of the traditional system, this high VE fatty acid extraction system requires a larger vacuum processing capacity. Therefore, a refrigerated vacuum system is used to provide a vacuum degree below 1 mbar. Under the action of stripping steam, the deodorized oil and stripping steam are mixed in the capture tower and the deodorization tower, and a large amount of vitamin E is extracted from the oil. The extracted high VE fatty acids enter the capture system, and the high-temperature oil after stripping enters the deodorization tower for thermal decolorization after cooling;

[0025] A04: After stripping, the high-temperature oil is quickly cooled by a high-efficiency heat exchanger and then enters the deodorization tower for thermal decolorization. The most important function of this step is to quickly reduce the temperature of the high-temperature oil to below 245°C to reduce the content of trans fatty acids. After the oil is thermally decolorized in the deodorization tower, it is stored after heat exchange and cooling treatment;

[0026] A05: The high VE fatty acids after stripping are cooled, recovered and stored at reduced temperature through the fatty acid capture system.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high VE fatty acid extraction device, characterized in that: It comprises a centrifugal pump (1), a first heat exchanger (2), a second heat exchanger (3), a third heat exchanger (4), a heater (5), a deodorizing tower (7), a shielded pump (8), a vacuum system (9), a cooling tank (10), a circulating pump (11), a cooler (12), a collecting tank (13) and a capturing tower (14); The outlet end of the centrifugal pump (1) is connected in sequence to the shell side of the first heat exchanger (2), the shell side of the second heat exchanger (3), and the shell side of the third heat exchanger (4); the shell side outlet end of the third heat exchanger (4) is connected to the inlet end of the heater (5); the outlet end of the heater (5) is connected to the lower part of the capture tower (14); a liquid distributor (15) and a multi-layer demister (16) are provided in the upper part of the capture tower (14); an isolation filler (6) is provided in the lower part of the capture tower (14); the inlet end of the collection tank (13) is connected to the inside of the capture tower (14); the outlet end of the collection tank (13) is connected to the inlet end of the circulation pump (11); the outlet end of the circulation pump (11) is connected to the inlet end of the circulation pump (11); The outlet end is connected to the inlet end of the cooler (12), the outlet end of the cooler (12) is connected to the liquid distributor (15) in the capture tower (14), the lower outlet end in the capture tower (14) is connected to the tube side inlet end of the third heat exchanger (4), the tube side outlet end of the third heat exchanger (4) is connected to the upper inlet end of the deodorizing tower (7), the lower outlet end of the deodorizing tower (7) is connected to the inlet end of the shielded pump (8), the outlet end of the shielded pump (8) is connected to the tube side of the second heat exchanger and the tube side of the first heat exchanger in sequence, the tube side outlet of the first heat exchanger is connected to the cooling tank (10), and the vacuum system (9) is connected to the capture tower (14) and the deodorizing tower (7).

2. A high VE fatty acid extraction device according to claim 1, characterized in that: The deodorizing tower (7) is a plate-type deodorizing tower.

3. A high VE fatty acid extraction device according to claim 1, characterized in that: The demister (16) is a wire mesh demister.

4. A high VE fatty acid extraction device according to claim 1, 2 or 3, characterized in that: The vacuum system (9) adopts a refrigeration vacuum system.

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