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
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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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