| (19) |
 |
|
(11) |
EP 0 340 717 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.07.1990 Bulletin 1990/28 |
| (43) |
Date of publication A2: |
|
08.11.1989 Bulletin 1989/45 |
| (22) |
Date of filing: 02.05.1989 |
|
| (51) |
International Patent Classification (IPC)4: C11B 3/10 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
06.05.1988 US 191094
|
| (71) |
Applicant: W.R. Grace & Co.-Conn. |
|
New York,
New York 10036 (US) |
|
| (72) |
Inventors: |
|
- Pryor, James Neil
West Friendship, MD 21794 (US)
- Bogdanor, James Marlow
Columbia, MD 21045 (US)
- Welsh, William Alan
Highland, MD 20777 (US)
|
| (74) |
Representative: UEXKÜLL & STOLBERG |
|
Patentanwälte
Beselerstrasse 4
22607 Hamburg
22607 Hamburg (DE) |
|
| |
|
| (54) |
Dual phase adsorption and treatment |
(57) Impurities, which may include soaps, gums, phospholipids and pigments, can be removed
from chemically or physically refined glyceride oils in a dual phase adsorption and
treatment process. In the first phase, the oil is contacted with amorphous silica
to remove phospholipids and soaps or gums or both. In the second phase, the oil is
passed through a packed bed of a pigment removal agent for decolorizing glyceride
oils.