Method for removing phthalate plasticizers from vegetable oil

A technology of phthalic acid and vegetable oil, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of complex removal technology, long removal cycle, high cost, etc., and achieve simple process, short cycle and high production efficiency Effect

Pending Publication Date: 2020-12-04
GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to disclose a method for removing phthalate plasticizers in vegetable oils, which is mainly used to solve the problem of non-artificial addition and uncontrollable plasticizers in the production process of edible vegetable oils. Overcome the inherent defects of the existing plasticizer removal technology, such as complex process, high cost, and long removal cycle

Method used

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  • Method for removing phthalate plasticizers from vegetable oil
  • Method for removing phthalate plasticizers from vegetable oil
  • Method for removing phthalate plasticizers from vegetable oil

Examples

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Embodiment 1

[0036] A method for removing phthalate plasticizers in vegetable oil, the content of phthalate plasticizers in vegetable crude oil is: di-n-butyl phthalate (DBP) is 0.35mg / kg , Di(2-ethyl)hexyl phthalate (DEHP) is 4.88mg / kg. Set the distillation temperature as the first level: 120°C, the second level: 150°C, the third level: 200°C; the scraping speed of each level is 110r / min; the feed rate of the material is 35L / h; the molecular distillation equipment The vacuum degree of each level is set as follows: the first level is 60-150pa, the second level is 0.1-1.0pa, and the third level is 0.1-1.0pa; the temperature of the condensed water is 50°C; Di-n-butyl phthalate (DBP) was not detected (quantitative limit: 0.3mg / kg), di(2-ethyl)hexyl phthalate (DEHP) was not detected (quantitative limit: 0.5mg / kg ).

Embodiment 2

[0038] A method for removing phthalate plasticizers in vegetable oil, the content of phthalate plasticizers in vegetable crude oil is: di-n-butyl phthalate (DBP) is 0.35mg / kg , Di(2-ethyl)hexyl phthalate (DEHP) is 4.88mg / kg. Set the distillation temperature as the first level: 150°C, the second level: 210°C, the third level: off; the scraping speed of each level is 110r / min; the feed rate of the material is 40L / h; The vacuum degrees of the first and second stages are respectively set as follows: the first stage is 36~52pa, the second stage is 4.0~7.0pa, and the third stage is closed; the temperature of the condensed water is 50°C; Di-n-butyl formate (DBP) was not detected (limit of quantification: 0.3 mg / kg), and di(2-ethyl)hexyl phthalate (DEHP) was not detected (limit of quantification: 0.5 mg / kg).

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Abstract

The invention discloses a method for removing phthalate plasticizers from vegetable oil. The method is characterized in that light and heavy molecules are separated according to different average freepaths of the molecules by adjusting and controlling distillation temperature, vacuum degree, film scraping speed, feeding speed and the like, so as to achieve the effect of removing the plasticizers.The method has the characteristics of environmental friendliness, simple process, convenience in operation, short period, high production efficiency and the like, and can be used for effectively removing the phthalate plasticizers exceeding the standard in the vegetable oil to obtain a safe and healthy vegetable oil product meeting the edible requirements.

Description

technical field [0001] The invention relates to a special technical field of liquid-liquid separation, in particular to a method for removing phthalate plasticizers in vegetable oil. Background technique [0002] Plasticizer, also known as plasticizer, is a polymer material additive that can significantly improve the flexibility of materials. It is widely used in plastics, rubber, adhesives, cellulose, resins, medical devices, cables, etc. products have a wide range of applications. [0003] Phthalates are relatively common plasticizers. We can control its source on the raw material side to ensure that the raw materials we purchase do not contain such ingredients, but the sealing rings and fillers of the equipment add more Therefore, in the production process of vegetable oil, if the equipment runs for a long time and the vegetable oil is soaked for a long time, it is inevitable that the plasticizer will be brought into the vegetable oil, so that the content of plasticizer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/12
CPCC11B3/12
Inventor 刘敏潘江波宋大为唐彬向宁刚
Owner GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP
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