Method for removing plasticizer in grease
A technology of plasticizer and oil, which is applied in the direction of oil/fat refining and fat generation, can solve problems that no one has been involved in, and achieve the effects of ensuring quality, extending shelf life, and avoiding secondary pollution
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Embodiment 1
[0042] Take 5g of evening primrose oil and put it into a 10ml test tube, take a total of 5 groups, add dibutyl phthalate (DBP) in sequence according to the gradient concentration, so that the concentration of each group reaches 1mg / kg, 5mg / kg, 10mg / kg respectively , 15mg / kg, 20mg / kg, mix well.
[0043] Each group of oils was pretreated by high-voltage pulsed electric field. The electric field strength is 15kV / cm, the number of pulses is 4, the frequency is 60Hz, the processing time is 400μs, and the pulse width is 100μs.
[0044] The pretreated oil was placed in 60 In the CO source irradiation field, the irradiation dose is 5kGy, and the treatment time is 4min. Add H-2 type activated carbon adsorbent with 1% oil weight, continue to stir to make it adsorb for 30min, the adsorption temperature is 100°C, and then centrifuge at 4500r / min for 30min to separate the adsorbent in the oil, take it out for detection and analysis, after irradiation The removal rates of plasticizers in...
Embodiment 2
[0046] Take 5g of evening primrose oil and put it into a 10ml test tube, take 5 groups in total, add di(2-ethyl)hexyl phthalate (DEHP) in sequence according to the gradient concentration, so that the concentration of each group reaches 1mg / kg, 5mg / kg, 10mg / kg, 15mg / kg, 20mg / kg, mix well.
[0047] Each group of oils was pretreated by high-voltage pulsed electric field. The electric field strength is 30kV / cm, the number of pulses is 6, the frequency is 60Hz, the processing time is 600μs, and the pulse width is 150μs.
[0048] The pretreated oil was placed in 60 In the CO source irradiation field, the irradiation dose range is 10kGy, and the treatment time is 6min.
[0049] Add H-2 type activated carbon adsorbent with 2% oil weight, continue to stir to make it adsorb for 40min, the adsorption temperature is 130°C, and then centrifuge at 4500r / min for 30min to separate the adsorbent in the oil, take it out for detection and analysis, after irradiation The removal rates of plas...
Embodiment 3
[0051] Take 20g of evening primrose oil, add dibutyl phthalate (DBP) and di(2-ethyl)hexyl phthalate (DEHP), so that the concentration of the two plasticizers reaches 5mg / kg, uniform mix.
[0052] Each group of oils was pretreated by high-voltage pulsed electric field. The electric field strength is 30kV / cm, the number of pulses is 6, the frequency is 60Hz, the processing time is 600μs, and the pulse width is 300μs.
[0053] The oil pretreated by high-voltage pulsed electric field was placed in 60 In the CO source irradiation field, the irradiation dose range is 5kGy, and the treatment time is 6min.
[0054] Put the irradiated oil in a three-necked flask, heat and stir to 100°C, add H-2 type activated carbon adsorbent with 3% oil weight, continue to stir until the set adsorption time is 50min, and then centrifuge at 4500r / min for 30min Separating the adsorbent in the oil, if the adsorbent is still suspended in the oil, then filter it, and finally get the clean oil;
[0055]...
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