http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-622735-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_eb153e9351b42cf0e24b1fbff9c2cdf2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11B7-0008 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11B7-00 |
| filingDate | 1946-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1949-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-622735-A |
| titleOfInvention | Improvements in or relating to processes for separating solid and liquid triglycerides from each other |
| abstract | Solid and liquid triglycerides are separated from each other by dissolving the mixed triglycerides in a semi-polar solvent of limited solubility in and for water, rapidly chilling the solution at a rate of not less than 0.75 DEG C. per minute, in a continuous crystallizer wherein the cooling surfaces are scraped with minimum agitation, and then separating the precipitated solid glycerides from the liquid glycerides remaining in solution and separately recovering the solvent from each fraction. A semi-polar solvent is defined as one which contains sufficient oxygen atoms in the molecule to have an attraction for water as indicated by a limited but definite solubility of water in the solvent and of the solvent in water. Such a solvent ensures that water, if present, is precipitated from the fat solvent solution rather than the water displacing the fat from solution. <PICT:0622735/III/1> Suitable solvents comprise ketones, esters, ethers, aliphatic nitro compounds and compounds containing one or more of these groups. Solvents specified comprise methyl ethyl ketone, methyl isobutyl ketone; isopropyl acetate, ethyl acetate; and ethyl ether. These solvents give precipitates of discrete particles rather than amorphous slimy precipitates. The process is applicable to the mixed triglycerides of animal, vegetable and marine oils such as hog fat and tallow, soya bean oil and cottonseed oil, and sardine and herring oil; and particularly to the inedible grade of hog fat known as white grease for the production of lard oil. The rapid chilling with minimum agitation ensure reduced damage to the fragile precipitates. The concentration of fat in the solvent is preferably 30 to 50 per cent by weight. In a suitable plant for the process, the melted mixed triglycerides from a container 1 and the solvent from a container 2 are metered to a counter-current chiller 9 and therefrom through pipe 13 to a continuous rotary vacuum filter 14. The precipitate from the filter is melted and discharged to a continuous still 16, and the filtered liquid is discharged to a continuous still 18. Solvent from the stills is condensed in a condenser 21 for re-cycling to the solvent container 2. The chiller 9 comprises cooling conduits 10 surrounding chilling tubes 11 in which rotary scrapers 12 are disposed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5602265-A |
| priorityDate | 1946-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.