# US 2020/0399557 A1 · Oil processing

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- Number: US 2020/0399557 A1
- Document ID: US20200399557A1
- Status: Published application
- Kind: A1
- Application number: 16/969,643
- Filed: 2019-02-21
- Published: 2020-12-24
- Earliest claimed: 2018-02-21
- Assignees: Cargill, Incorporated
- Applicants: Cargill, Incorporated
- Inventors: Michael MAIWORM; Armin Willem-Friedrich Hermann TARNOW
- Web page: https://patentgrep.com/patent/US20200399557A1

## CPC

- C11B 3/001: {by a combination of two or more of the means hereafter}
- B01D 3/10: Vacuum distillation (B01D3/12 takes precedence)
- C11B 3/06: with bases
- C11B 3/10: by adsorption
- C11B 3/12: by distillation
- C11B 3/14: with the use of indifferent gases or vapours, e.g. steam
- B01D 3/28: Fractionating columns with surface contact and vertical guides, e.g. film action
- C11B: PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES (drying-oils C09F)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## 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.

## Claims

### 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.

### Claim 2 (depends on 1)

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/m2h surface of packing.

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

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

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 6)

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

### Claim 8 (depends on 6)

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

### Claim 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

### Claim 10 (depends on 8)

The method according to claim 8 wherein the stripping column is having an oil loading of from 0.5 to 4.0 kg/m2h surface of packing.

### Claim 11 (depends on 8)

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