Vegetable oil refining reverse running system

Abstract

A vegetable oil refining reverse running system comprises a falling film evaporator, a deodorization tower, a heater and a deacidification tower, a cold oil channel and a hot oil channel which are independent of each other and exchange heat with each other are arranged in the falling film evaporator, and the cold oil channel, the deodorization tower, the heater, the deacidification tower and the hot oil channel are sequentially connected in series through pipelines. The other end of the cold oil channel is communicated with an external oil source through a pipeline, the falling film evaporator is used for conducting heat exchange and temperature rise on to-be-treated grease in the cold oil channel, the deodorization tower is used for conducting deodorization treatment on the to-be-treated grease, and a deodorization tower extraction pump is connected to the pipeline between the deodorization tower and the heater. The heater is used for heating the deodorized grease, and the deacidification tower is used for deacidifying the deodorized grease. According to the utility model, the production sequence of the refining system is adjusted, deodorization is performed firstly, then deacidification is performed, and fatty acid generated by hydrolysis of part of products in the deodorization process is removed through deacidification, so that the acid value of the products is well controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of vegetable oil refining, in particular to a vegetable oil refining anti-running system. Background Art

[0002] At present, the refining process of vegetable oil in the existing technology is basically to deacidify first and then deodorize. In the deodorization process, part of the oil is hydrolyzed to produce some fatty acids. A small amount of these fatty acids will eventually remain in the product, resulting in a slight increase in the acid value of the product. The acid value is an important parameter for the content of free fatty acids in oils and fats. The size of the acid value directly affects the quality and performance of the oils and fats. The higher the acid value, the lower the freshness and refining degree, that is, the worse the quality. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model aims to provide a vegetable oil refining anti-running system.

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

[0005] A vegetable oil refining reverse running system comprises a falling film evaporator, a deodorizing tower, a heater and a deacidifying tower, wherein the falling film evaporator is provided with two cold oil channels and a hot oil channel which are independent of each other and exchange heat with each other, wherein the cold oil channel, the deodorizing tower, the heater, the deacidifying tower and the hot oil channel are sequentially connected in series through pipelines, wherein the other end of the cold oil channel is connected to an external oil source through a pipeline for inputting the oil to be processed, wherein the falling film evaporator is used for heating the oil to be processed in the cold oil channel by heat exchange to a temperature required for deodorization treatment, wherein the deodorizing tower is used for deodorizing the oil to be processed to obtain deodorized oil The pipeline between the deodorizing tower and the heater is connected with a deodorizing tower extraction pump for conveying the deodorized oil output from the deodorizing tower to the heater, the heater is used to heat the deodorized oil to a temperature required for deacidification, the deacidifying tower is used to deacidify the deodorized oil to obtain refined vegetable oil, the pipeline between the deacidifying tower and the hot oil channel is connected with a deacidifying tower extraction pump for conveying the refined vegetable oil output from the deacidifying tower extraction pump to the hot oil channel, and the other end of the hot oil channel is connected with an evaporator extraction pump through a pipeline for outputting the refined vegetable oil in the hot oil channel.

[0006] Preferably, it also includes a heat exchanger, in which two independent heat exchange channels for mutual heat exchange are arranged, a pipeline for inputting the oil to be processed at the other end of the cold oil channel is connected to one of the heat exchange channels, and a pipeline for outputting refined vegetable oil at the other end of the hot oil channel is connected to the other heat exchange channel.

[0007] Preferably, the heat exchanger is a plate heat exchanger.

[0008] Beneficial effects of the utility model

[0009] Compared with the prior art, the advantages of the present invention are:

[0010] The utility model adjusts the production sequence of the refining system, first deodorizes and then deacidifies, so that fatty acids generated by hydrolysis of some products in the deodorization process can be removed through the post-deacidification, thereby having a good control over the acid value of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0014] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] See also Figure 1The utility model provides a technical solution: a vegetable oil refining reverse running system, comprising a falling film evaporator 1, a deodorizing tower 2, a heater 3 and a deacidifying tower 4, wherein the falling film evaporator 1 is provided with two cold oil channels and a hot oil channel which are independent of each other and exchange heat with each other, wherein the cold oil channel, the deodorizing tower 2, the heater 3, the deacidifying tower 4 and the hot oil channel are sequentially connected in series through pipelines, wherein the other end of the cold oil channel is connected to an external oil source through a pipeline for inputting the oil to be processed, wherein the falling film evaporator 1 is used for heating the oil to be processed in the cold oil channel to a temperature required for deodorizing treatment, and the deodorizing tower 2 is used for deodorizing the oil to be processed. To the deodorized oil, the pipeline between the deodorizing tower 2 and the heater 3 is connected with a deodorizing tower extraction pump 21 for conveying the deodorized oil output from the deodorizing tower 2 to the heater 3, the heater 3 is used to heat the deodorized oil to the temperature required for deacidification treatment, the deacidification tower 4 is used to deacidify the deodorized oil to obtain refined vegetable oil, the pipeline between the deacidification tower 4 and the hot oil channel is connected with a deacidification tower extraction pump 41 for conveying the refined vegetable oil output from the deacidification tower extraction pump 41 to the hot oil channel, and the other end of the hot oil channel is connected with an evaporator extraction pump 11 through a pipeline for outputting the refined vegetable oil in the hot oil channel.

[0016] Theory and practice have proved that the temperature required for deacidification (240-245℃) is higher than the thermal decolorization temperature (220-235℃) for deodorization. The fatty acids in the oil can be quickly removed under high temperature, high vacuum and direct steam support, so that the acid value of the finished oil reaches the internal control standard. The pigments in the oil are thermally decolorized under the long-term (about 60-70min) self-circulation in the deodorization tower. The oil takes a long time to thermally decolorize in the deodorization tower, and the temperature should not be too high to prevent some pigments from solidifying under high temperature and high vacuum conditions, which increases the difficulty of removal. Therefore, the production order of the deodorization system is adjusted to deodorize first and then deacidify.

[0017] The working process of the utility model is as follows: the oil to be treated enters the cold oil channel of the falling film evaporator 1 and exchanges heat with the high-temperature refined vegetable oil in the hot oil channel. At this time, the temperature of the oil to be treated is about 220°C, and then enters the deodorizing tower 2, where it is retained and circulated for 60-70 minutes. Under the conditions of high vacuum and temperature of 220°C±, the heat-sensitive substances are removed. Finally, the deodorized oil is extracted by the deodorizing tower extraction pump 21 and enters the heater 3. After being heated to 240-245°C in the heater 3, it enters the deacidification tower 4 for deacidification treatment. After the fatty acid volatilizes, it takes away part of the heat. At this time, the oil temperature drops to about 230-235°C. The refined vegetable oil after deacidification is extracted by the deacidification tower extraction pump 41 and then enters the falling film evaporator 1. The refined vegetable oil exchanges heat with the oil to be treated in the falling film evaporator 1, and the oil to be treated is heated to 220°C±. Finally, the refined vegetable oil is extracted by the evaporator extraction pump 11 and enters the next process.

[0018] The utility model adjusts the production sequence of the refining system, first deodorizes and then deacidifies, so that fatty acids generated by hydrolysis of some products in the deodorization process can be removed through the post-deacidification, thereby having a good control over the acid value of the product.

[0019] Furthermore, the utility model also includes a heat exchanger 5, wherein two heat exchange channels that are independent of each other and exchange heat with each other are arranged in the heat exchanger 5, a pipeline for inputting the oil to be processed at the other end of the cold oil channel is connected to one of the heat exchange channels, and a pipeline for outputting the refined vegetable oil at the other end of the hot oil channel is connected to the other heat exchange channel. The oil to be processed is heat-exchanged with the high-temperature refined vegetable oil through the heat exchanger 5, and the oil to be processed is initially heated to 150°C, thereby reducing the power requirement of the falling film evaporator 1 and reducing the scale of the falling film evaporator 1.

[0020] Specifically, the heat exchanger 5 is a plate heat exchanger.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vegetable oil refining anti-running system, characterized in that: The invention comprises a falling film evaporator (1), a deodorizing tower (2), a heater (3) and a deacidifying tower (4). The falling film evaporator (1) is provided with two cold oil channels and a hot oil channel which are independent of each other and exchange heat with each other. The cold oil channel, the deodorizing tower (2), the heater (3), the deacidifying tower (4) and the hot oil channel are sequentially connected in series through pipelines. The other end of the cold oil channel is connected to an external oil source through a pipeline for inputting oil to be treated. The falling film evaporator (1) is used to heat the oil to be treated in the cold oil channel to a temperature required for deodorizing treatment. The deodorizing tower (2) is used to deodorize the oil to be treated to obtain deodorized oil. The deodorizing tower (2) is used to deodorize the oil to be treated to obtain deodorized oil. ) is connected to a pipeline between the deodorizing tower (2) and the heater (3) for conveying the deodorized oil output from the deodorizing tower (2) to the heater (3); the heater (3) is used to heat the deodorized oil to a temperature required for deacidification treatment; the deacidifying tower (4) is used to deacidify the deodorized oil to obtain refined vegetable oil; the pipeline between the deacidifying tower (4) and the hot oil channel is connected to a deacidifying tower extraction pump (41) for conveying the refined vegetable oil output from the deacidifying tower extraction pump (41) to the hot oil channel; the other end of the hot oil channel is connected to an evaporator extraction pump (11) through a pipeline for conveying the refined vegetable oil in the hot oil channel.

2. A vegetable oil refining anti-runaway system according to claim 1, characterized in that: The heat exchanger (5) is also included. Two heat exchange channels that are independent of each other and exchange heat with each other are arranged inside the heat exchanger (5). A pipeline for inputting the oil to be processed at the other end of the cold oil channel is connected to one of the heat exchange channels, and a pipeline for outputting the refined vegetable oil at the other end of the hot oil channel is connected to the other heat exchange channel.

3. A vegetable oil refining anti-runaway system according to claim 2, characterized in that: The heat exchanger (5) is a plate heat exchanger.

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