Physical deacidification deodorization method for vegetable oil

A physical deacidification, deacidification and deodorization technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of unfavorable fatty acid gas uplift and volatilization, fatty acid gas volatilization resistance, uneven distribution, etc., to achieve oil quality Guaranteed, short residence time, uniform oil film distribution effect

Inactive Publication Date: 2015-07-29
王朝阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the oil film is thicker and the distribution is not uniform. The fatty acid gas in the oil in the packed tower has a large resistance to volatilization and takes a long time, w

Method used

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  • Physical deacidification deodorization method for vegetable oil
  • Physical deacidification deodorization method for vegetable oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one (sunflower seed oil) (use combined column of the present invention)

[0020] 1. Heat the sunflower oil (acid value 2.54mgKOH / kg, yellow 35 red, 2.2 Lovibond colorimeter 25.4mm tank) to 90°C and enter the decolorization tower, fully mix with decolorization clay and activated carbon and simultaneously Heat to 110°C, mix for 25 minutes and filter out activated clay and activated carbon to obtain deeply degummed and decolorized oil (color is tank yellow 20 red 1.5 Lovibond colorimeter 133.4mm tank).

[0021] 2. Put the decolorized oil into the degasser to precipitate the oxygen contained in the oil, and heat it to 240°C and enter the No. 1 tube packing tray combination tower for about 45 minutes to extract it, and then heat it to 255 °C and enter the No. 2 tube packing After about 25 minutes, the tray-type combined tower is drawn out, heated to 260°C and entered into the No. 3 tube-packed tray-type combined tower, drawn out after about 15 minutes, and deodori...

Embodiment 2

[0022] Embodiment two (safflower seed oil) (use combined tower of the present invention)

[0023] 1. Heat the sunflower oil (acid value 1.96mgKOH / kg, yellow 35 red, 2.8 Lovibond colorimeter 25.4mm tank) to 90°C and enter the decolorization tower, fully mix with decolorization clay and activated carbon and simultaneously Heat to 110°C, mix for 25 minutes and filter out activated clay and activated carbon to obtain deeply degummed and decolorized oil (color is tank yellow 20 red 1.7 Lovibond colorimeter 133.4mm tank).

[0024] 2. Put the decolorized oil into the degasser to precipitate the oxygen contained in the oil, and heat it to 240°C and enter the No. 1 tube packing tray combination tower for about 45 minutes to extract it, and then heat it to 255 °C and enter the No. 2 tube packing After about 25 minutes, it is drawn out from the disc-type combined tower, heated to 260°C and entered into No. 3 tube-packed disc-type combined tower, and drawn out after about 15 minutes, and ...

Embodiment 3

[0025] Embodiment three (rapeseed oil) (use combined tower of the present invention)

[0026] 1. Heat the primary degummed raw rapeseed oil (acid value 2.72mgKOH / kg, color yellow 35 red 4.1 Lovibond colorimeter 25.4mm tank) to 90°C and enter the decolorization tower, fully mix with decolorization clay and activated carbon and simultaneously Heating to 110°C, mixing for 25 minutes to filter out activated clay and activated carbon to obtain deeply degummed and decolorized oil (color is tank yellow 25 red 2.1 Lovibond colorimeter 133.4mm tank).

[0027] 2. Put the decolorized oil into the degasser to precipitate the oxygen contained in the oil, and heat it to 240°C and enter the No. 1 tube packing tray combination tower for about 45 minutes to extract it, and then heat it to 255 °C and enter the No. 2 tube packing After about 25 minutes, it is drawn out from the combined tray tower, heated to 260°C and entered into the No. 3 tube packed tray-type combined tower, drawn out after a...

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Abstract

The invention relates to a physical deacidification deodorization method for vegetable oil. The method comprises the following steps: (1), conveying heated deeply-degummed oil into an air separator to remove air; (2), raising the temperature of the oil to 230-245 DEG C, enabling the oil to enter a first group of deacidification deodorization towers to remove odor and short carbon chain (such as 14-16 carbon chains) fatty acid in the oil; (3), after oil in the first group of deacidification deodorization towers is pumped out, raising the temperature to 245-255 DEG C, enabling the oil to enter a second group of deacidification deodorization towers to remove long carbon chain fatty acid in the oil, pumping oil out and cooling so as to obtain deodorized deacidified oil. According to the invention, volatilization of fatty acid molecules of different sizes in different towers is realized and the oil product stays in a high temperature state with a short time, so that the quality of the oil product is ensured. Meanwhile, oil films are more uniform in distribution and thinner since the special deacidification deodorization towers are adopted, and fatty acid volatilizes more quickly since the volatilization resistance of fatty acid is lower.

Description

Technical field: [0001] The invention relates to a method for physical deacidification and deodorization of vegetable oil. Background technique: [0002] At present, the deacidification and deodorization of vegetable oil is carried out in the same tower within the range of 230-270 degrees. After the small molecular fatty acids come out, they occupy the space of the deacidification and deodorization tower. The large molecular fatty acids are difficult to volatilize, and the deacidification effect is poor. In order to achieve the deacidification effect, the oil is circulated in the tower, which makes the oil product stay in the high temperature state for a long time, which affects the quality of the oil product. In CN103409236A, a combined deacidification and deodorization tower suitable for edible oil deodorization in the oil and fat industry is disclosed. section, stuffing pre-deodorization section, tympanic membrane deodorization section, and mammoth pump deodorization and...

Claims

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Application Information

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IPC IPC(8): C11B3/00C11B3/14
CPCC11B3/001C11B3/14
Inventor 王朝阳
Owner 王朝阳
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