A kind of rice bran oil refining method retaining oryzanol

A kind of rice bran oil refining method retaining oryzanol

  • CN 103,087,821 B
  • Filed: 01/15/2013
  • Issued: 09/07/2016
  • Est. Priority Date: 01/15/2013
  • Status: Active Grant
First Claim
Patent Images

1. the rice bran oil refining method retaining oryzanol, it is characterised in that Rice bran crude oil through degumming, dewax, decolour, flash distillationPre-deacidification and deodorize, acid flux material deacidification, wash, be vacuum dried, winterization defat obtains product oil, wherein, described flash distillation is pre-de-Acid and deodour method are the bleached oil after decolorization process to be warming up to 230-240 DEG C enter flash distillation extracting tower, in absolute pressureCarrying out pre-deacidification under 0.13-0.53kpa, distillate the gas containing fatty acid mixed, obtaining acid value is 10-15(KOH) mg gPre-deacidification oil;

  • Pre-deacidification oil enters the further deodorize of deodorizing tower, sprays into the 1-4% that open steam amount is oil weight in deodorizing tower, de-Being cooled to less than 70 DEG C after smelly and obtain pre-deacid-deodoring oil, the total time of pre-deacidification and deodorize is 20-30min;

    Described acidity is moltenThe method of agent deacidification is, the pre-deacidification/deodorised oil after pre-for described flash distillation deacidification and deodorising step is placed in extractor, under stirringAdd methanol or the alcohol solvent of concentration 95% that regulation pH value is 5-6.5, be 1.5-3;

    1 at alcohol oil volume mass ratio, temperatureExtract 3-5 deacidification, each 15-30min under the conditions of 30-50 DEG C, be cooled to less than 20 DEG C after having extracted and be separated,To solvent phase and oil phase, described extracting process is to use the extractor of multiple series connection to carry out adverse current or cross current solvent extraction.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×