GB698564A - A method of decolourizing neutralised fatty oils - Google Patents
A method of decolourizing neutralised fatty oilsInfo
- Publication number
- GB698564A GB698564A GB6017/51A GB601751A GB698564A GB 698564 A GB698564 A GB 698564A GB 6017/51 A GB6017/51 A GB 6017/51A GB 601751 A GB601751 A GB 601751A GB 698564 A GB698564 A GB 698564A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- aqueous solution
- salt
- lye
- separated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000010685 fatty oil Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 14
- 239000003921 oil Substances 0.000 abstract 9
- 235000019198 oils Nutrition 0.000 abstract 9
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 6
- 239000007864 aqueous solution Substances 0.000 abstract 5
- 230000003472 neutralizing effect Effects 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- 239000000344 soap Substances 0.000 abstract 3
- 235000021588 free fatty acids Nutrition 0.000 abstract 2
- 241000196324 Embryophyta Species 0.000 abstract 1
- 235000019484 Rapeseed oil Nutrition 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000004040 coloring Methods 0.000 abstract 1
- 235000014113 dietary fatty acids Nutrition 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 239000000194 fatty acid Substances 0.000 abstract 1
- 229930195729 fatty acid Natural products 0.000 abstract 1
- 150000004665 fatty acids Chemical class 0.000 abstract 1
- 239000000796 flavoring agent Substances 0.000 abstract 1
- 235000019634 flavors Nutrition 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- 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
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/06—Refining fats or fatty oils by chemical reaction with bases
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
Abstract
Fatty oils are decolourized and improved in flavour and odour by first neutralizing the free fatty acids, separating the soap <PICT:0698564/III/1> formed from the oil and then mixing with the oil an aqueous solution containing a salt of a strong base and a weak acid, such as soda or secondary sodium phosphate. The free fatty acids are preferably neutralized with caustic soda lye, and the aqueous solution of the salt may also contain a strong neutralizing agent such as caustic soda lye. The aqueous solution of the salt preferably has a pH value between 11.0 and 12.8 after dilution 100 times, and the time of contact may range from 10 to 30 minutes. The temperature during the final stage must be sufficiently high to cause any emulsion formed to be broken, such as 50-80 DEG C. The aqueous solution is preferably mixed with the unheated oil after the soap has been separated or the oil may be cooled therebefore. The temperature is then raised immediately before the precipitated colouring matter is to be separated. The soap produced by neutralizing the fatty acids may be separated by centrifuging, preferably before the lye has been mixed with the oil for two minutes. The aqueous solution may be mixed with the oil in batches. In a suitable plant, the oil is pumped through a heater 2, a mixer 5 where it is dosed with lye, to a separator 3. After separation of the scap, the oil is pumped to a mixer 7 into which the aqueous salt solution is fed and the mixture is then led through a vessel 9, which may be provided with an agitator, to a final separator 10 to recover the purified oil. In examples, rape-seed oil is purified by the process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE698564X | 1950-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698564A true GB698564A (en) | 1953-10-21 |
Family
ID=20315408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6017/51A Expired GB698564A (en) | 1950-03-14 | 1951-03-13 | A method of decolourizing neutralised fatty oils |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB698564A (en) |
-
1951
- 1951-03-13 GB GB6017/51A patent/GB698564A/en not_active Expired
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