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Short-path distillation production method and short-path distiller for increasing unsaturated fatty acid content of vegetable oil

An unsaturated fatty acid and short-path distillation technology, which is applied in the field of vegetable oil refining and fractionation, can solve the problems of local crystal nuclei, increase the complexity of the actual production operation process, crystal tearing, etc., and achieve the effect of increasing the content of unsaturated fatty acids

Active Publication Date: 2014-05-21
陈汉卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (3) Stirring speed: If the stirring speed is not strong enough, local crystal nuclei will be generated; if the stirring is too vigorous, the crystals will be torn apart
[0012] Since the above-mentioned factors will affect the fractionation effect of oil, it is necessary to pay attention to all the above-mentioned factors and control each process operation parameter in the actual production process, which will inevitably increase the complexity of the actual production operation process.

Method used

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  • Short-path distillation production method and short-path distiller for increasing unsaturated fatty acid content of vegetable oil
  • Short-path distillation production method and short-path distiller for increasing unsaturated fatty acid content of vegetable oil
  • Short-path distillation production method and short-path distiller for increasing unsaturated fatty acid content of vegetable oil

Examples

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Effect test

Embodiment 1

[0038] The following is an example of processing 100 kilograms of decolorized corn oil per hour to further illustrate the short-path distillation production method for increasing the unsaturated fatty acid content in vegetable oil and the structure of the short-path still used.

[0039] Such as Figure 1 to Figure 5 As shown, in this embodiment, the present invention provides a short path distiller, which includes a housing device 100 , a distribution device 200 , a heating device 300 and a condensing device 400 .

[0040] Wherein, the casing device 100 includes a cylinder body 101. In this embodiment, the cylinder body 101 is straight cylindrical, with an upper head on the top, a lower head on the lower end, and an oil inlet pipe 102 below the upper head. figure 1 with figure 2 , the oil inlet pipe 102 is certainly provided with the oil inlet pipe outlet 102a, as figure 2 As shown, in this embodiment, a number of small holes are distributed at the outlet 102a of the oil i...

Embodiment 2

[0074] Embodiment 2 continues to complete on the basis of embodiment 1, that is,

[0075] (4) Short path distillation 4:

[0076] The third heavy component material in the third heavy component collection tank is heated to 240-265°C through a heat exchanger, enters the short-path still, and is evenly distributed on the heating evaporation surface through the distribution plate 202. The temperature of the heating evaporation surface is 280-316 °C, the vacuum degree is 0.1-5Pa, the fourth light component material (i.e. triglyceride rich in linoleic acid) is cooled to 30-45 °C through the condensing device 400, and flows into the fourth light component collection tank. Substances go directly to the fourth component collection tank.

[0077] After testing, the unsaturated fatty acid content in the fourth light component collection tank was 60%.

Embodiment 3

[0079] Taking the processing of 200 kg of degummed rapeseed oil per hour as an example, the short-path distillation production process for increasing the unsaturated fatty acid content in vegetable oil is further described.

[0080] This method still adopts the short path distiller of the present invention.

[0081] In the first step, the degummed rapeseed oil is heated to 160-180°C through a heat exchanger, and then enters a short-path distiller, and is evenly distributed on the heating evaporation surface through the distribution plate 202. The temperature of the heating evaporation surface is 190-200°C. With a vacuum degree of 10 Pa, the first light components (namely fatty acids and odor components) are cooled to 3-10°C through the condensing device 400, and flow into the first light component collection tank, and the first heavy components directly enter the first recombination collection tank.

[0082] In the second step, the first heavy component material in the first ...

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Abstract

The invention discloses a short-path distillation production method and a short-path distiller for increasing the unsaturated fatty acid content of vegetable oil. The short-path distillation production method comprises the following steps of preheating an evaporating surface to 170 to 320 DEG C, vacuumizing to 0.1 to 10Pa, cooling a condensing surface to 3 to 45 DEG C, heating degummed vegetable oil to 150 to 190 DEG C by using a heat exchanger, causing the vegetable oil to enter the short-path distiller, causing light components to enter light component collection tanks, and causing heavy components to enter heavy component collection tanks. The short-path distiller and the short-path distillation production method for increasing the unsaturated fatty acid content of the vegetable oil have the advantages that operation in easy; materials are heated only for tens of seconds during short-path distillation, so that the side reaction of oxidation, polymerization and the like of unsaturated fatty acid can be suppressed; the short-path distiller and the method have high application value in the field of fractionation for oil and fat refining.

Description

technical field [0001] The invention relates to a short-path distiller and a production process for increasing the content of unsaturated fatty acids in vegetable oils, belonging to the technical field of vegetable oil refining and fractionation, and aims to increase the content of unsaturated fatty acids in vegetable oils. Background technique [0002] At present, oil fractionation is commonly used to separate triglycerides with different fatty acid compositions. Oil fractionation refers to dividing oil into solid and liquid parts at a certain temperature by using the difference in melting point and solubility of various triglycerides that make up oil. According to the characteristics of the cooling crystallization and separation process, the oil fractionation process is divided into three types: conventional method, surfactant method and solvent method. [0003] The conventional fractionation method is a method of fractionation without additional measures during the cooli...

Claims

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Application Information

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IPC IPC(8): C11B3/12B01D3/12
Inventor 陈汉卿
Owner 陈汉卿
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