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Soap component removing method for esterification modified grease

A technology of esterification modification and oil, which is applied in the direction of oil/fat refining and fat production, which can solve the problems of dark oil color, safety hazards, irritation, etc., and achieve short operation time, pollution reduction and low cost Effect

Active Publication Date: 2014-09-10
GUANGZHOU NANQIAO FOOD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphoric acid is decomposed by heat to produce highly toxic phosphorus oxide fume, which is corrosive, and the steam or mist is irritating to the eyes, nose, and throat. Contact with the skin or eyes can cause burns, which has a large safety hazard, and phosphoric acid heating makes Grease appears darker in color, which affects its appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, The desoaping process of esterified modified oil is as follows:

[0021] (1) Add 50% of hard palm oil, 25% of soft palm oil, 5% of butter, 10% of soybean oil, and 10% of coconut oil into the esterification reaction kettle, and vacuumize the inside of the kettle. The pressure strength is 0-35 mbar;

[0022] (2) Use a heat exchanger to increase the temperature of the raw material oil in the kettle to 110-160°C, add sodium methoxide with a weight ratio of 0.1-1.0% of the raw material oil, then control the temperature at 140-160°C, and inject nitrogen to generate a boiling formula stir;

[0023] (3) After transesterification for 15-50 minutes, use a heat exchanger to rapidly lower the temperature of the reaction oil to 80-90°C;

[0024] (5) Lower the reaction oil into the neutralization circulation tank, and fill it with nitrogen to break the vacuum state, so that the pressure reaches 600-700 mbar;

[0025] (6) Then add a citric acid solution with a concen...

Embodiment 2

[0032] Embodiment 2, The desoaping process of esterified modified oil is as follows:

[0033] (1) Add 10% hard palm oil, 50% soft palm oil, 10% butter, 10% soybean oil, and 20% coconut oil to the esterification reaction kettle, and vacuumize the inside of the kettle. The pressure strength is 0-35 mbar;

[0034] (2) Use a heat exchanger to increase the temperature of the raw material oil in the kettle to 110-160°C, add potassium hydroxide glycerol solution with a weight ratio of 0.6-0.8% of the raw material oil, then control the temperature at 140-160°C, and pass in nitrogen Generate boiling stirring;

[0035] (3) After transesterification for 15-50 minutes, use a heat exchanger to quickly reduce the temperature of the reaction oil to 80-90°C;

[0036] (5) Lower the reaction oil into the neutralization circulation tank, and fill it with nitrogen to break the vacuum state, so that the pressure reaches 600-700 mbar;

[0037] (6) Then add an acid solution with a concentration...

Embodiment 3

[0044] Embodiment 3, The desoaping process of esterified modified oil is as follows:

[0045] (1) Add 20% of hard palm oil, 50% of soft palm oil, 5% of tallow, 20% of soybean oil, and 5% of coconut oil into the esterification reaction kettle, and vacuumize the inside of the kettle. The pressure strength is 0-35 mbar;

[0046] (2) Use a heat exchanger to increase the temperature of the raw material oil in the kettle to 110-160°C, add sodium methoxide with a weight ratio of 0.1-1.0% of the raw material oil, then control the temperature at 140-160°C, and inject nitrogen to generate a boiling formula stir;

[0047] (3) After transesterification reaction for 15-50 minutes, use a heat exchanger to quickly reduce the temperature of the reaction oil to 80-90°C,

[0048] (5) Lower the reaction oil into the neutralization circulation tank, and fill it with nitrogen to break the vacuum state, so that the pressure reaches 600-700 mbar;

[0049] (6) Then add an acid solution with a co...

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PUM

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Abstract

The invention discloses a soap component removing method for esterification modified grease. Raw oil is added into an esterification reaction still, a catalyst is added for reaction, cooling is carried out for terminating the reaction, then reaction oil is led into a neutralization circulation tank, an acid solution with a specific concentration is added, stirring and neutralization are carried out, the reaction is stopped, the solutions are guided into a high shear force homogenizer, then the solutions are recycled and return to the neutralization circulation tank, filter aids and white earth are added, stirring and decoloration are carried out in sequence, neutralization materials and color adsorption materials are removed, deodorization is carried out after the white earth is filtered out, and the esterification modified grease is obtained. According to the soap component removing method for the esterification modified grease, the edible acid solution is adopted for stopping the reaction and decomposing soap components in a neutralization preparation process, and operation is safe and convenient to carry out; high shear circulation is adopted to accelerate the neutralization preparation process, reaction time is shortened, and the yield is high; the filter aids and the activated white earth are used in the soap component removing process in a matched mode to remove by-product impurities in the preparation process and improve grease color, and generation of waste water is reduced; the soap component removing method for the esterification modified grease is low in cost, short in production time, high in benefit, low in pollution and obvious in effect.

Description

technical field [0001] The invention relates to the field of oil refining, in particular to a method for stopping reaction and neutralizing soap removal of esterified modified oil. Background technique [0002] Unrefined oil can be obtained from the fat tissue of animals and plants by pressing, leaching or water substitution. The oil can be used as baking oil after refining processes such as degumming, deacidification, decolorization, modification (hydrogenation / esterification), and deodorization. Or high-end oil production oil. However, during the refining process, alkali will be used as a reactant to undergo saponification reaction to form soap, which will cause bad smell and flavor of oil, and will cause deterioration of oil under high temperature environment. [0003] The traditional conventional method for removing grease and soap is water washing method. This method is to mix water into the oil. After homogenization, the soap in the oil will dissolve into the water. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/10
Inventor 蔡耀坤
Owner GUANGZHOU NANQIAO FOOD