Oil processing

Patent metadata

Field	Value
Publication number	US-2020399557-A1
Application number	US-201916969643-A
Country	US
Kind code	A1
Filing date	Feb 21, 2019
Priority date	Feb 21, 2018
Publication date	Dec 24, 2020
Grant date	—

Abstract

A process for the production of a refined oil having a reduced content of glycidyl esters and hydroperoxides characterized in that it comprises subjecting an edible oil to the following steps, a bleaching step, a deodorization step, re-bleaching step on the deodorized oil, and a further refining step, wherein the further refining step is carried out by passing the bleached edible oil obtained in step c) through an oil refining equipment consisting of a stripping column with packing and not more than one oil collection tray.

First claim

1 . A process for the production of a refined oil having a reduced content of glycidyl ester and hydroperoxides characterized in that it comprises subjecting an edible oil to the following steps:
a. a bleaching step, b. a deodorization step, c. a re-bleaching step of the deodorized oil, and d. a further refining step, wherein the further refining step (d) is carried out by passing the bleached edible oil obtained in step c) under vacuum through an oil refining equipment consisting of a stripping column with packing and not more than one oil collection tray.

2 . The process according to claim 1 wherein the stripping column has a packing and an oil loading of from 0.5 to 4.0 kg/m 2 h surface of packing.

3 . The process according to claim 1 wherein the stripping column has a height to diameter ratio from 0.1 to 10.

4 . The process according to claim 1 , wherein the further refining step (d) is carried out at a temperature below 215° C.

5 . The process according to claim 1 wherein the bleaching step a) and/or c) is performed in presence of an activated bleaching agent.

6 . The process according to claim 1 wherein the process further comprises a treatment in presence of a base.

7 . The process according to claim 6 wherein the treatment in presence of a base is prior to the further refining step d).

8 . The process according to claim 6 wherein the treatment in presence of a base is prior to the re-bleaching step c).

9 . A method for using a refining equipment consisting of a stripping column with packing and not more than one oil collection tray to reduce the content of hydroperoxides and/or volatiles from refined bleached, deodorized and re-bleached edible oils

10 . The method according to claim 8 wherein the stripping column is having an oil loading of from 0.5 to 4.0 kg/m 2 h surface of packing.

11 . The method according to claim 8 wherein the stripping column, has a height to diameter ratio from 0.1 to 10.

Assignees

• Cargill Inc

Inventors

• Maiworm Michael
• Tarnow Armin Willem-Friedrich Hermann

Classifications

• C11B3/12

  by distillation · CPC title

• B01D3/28

  Fractionating columns with surface contact and vertical guides, e.g. film action · CPC title

• B01D3/10

  Vacuum distillation (B01D3/12 takes precedence) · CPC title

• C11B3/001 Primary

  by a combination of two or more of the means hereafter · CPC title

• C11B3/06

  with bases · CPC title