GB943706A - Freeze drying process - Google Patents
Freeze drying processInfo
- Publication number
- GB943706A GB943706A GB3820361A GB3820361A GB943706A GB 943706 A GB943706 A GB 943706A GB 3820361 A GB3820361 A GB 3820361A GB 3820361 A GB3820361 A GB 3820361A GB 943706 A GB943706 A GB 943706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- liquid
- freeze drying
- ice
- vapour
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/02—Dehydrating; Subsequent reconstitution
- A23B7/024—Freeze-drying, i.e. cryodessication or lyophilisation
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
- A23L3/44—Freeze-drying
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
943,706. Freeze drying. ESSO RESEARCH & ENGINEERING CO. Oct. 16, 1962 [Oct. 25, 1961], No. 38203/61. Heading F4G. A freeze drying process comprises freezing the material to be dried in a closed vessel by immersion in a liquid below 0‹ C. and having a higher boiling point than water, e.g. butanol or isobutanol, reducing the pressure in the vessel below the vapour pressure of ice at 0‹ C., viz. 4.5 mm. of mercury, and heating the remaining liquid in the vessel to its boiling point so that the vapour of the liquid contacts the frozen material, condenses and drains back to the bottom of the vessel giving up its latent heat to the ice to evaporate the latter. The water vapour from the evaporation of the ice may be compressed and passed through a coil immersed in the liquid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3820361A GB943706A (en) | 1961-10-25 | 1961-10-25 | Freeze drying process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3820361A GB943706A (en) | 1961-10-25 | 1961-10-25 | Freeze drying process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB943706A true GB943706A (en) | 1963-12-04 |
Family
ID=10401923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3820361A Expired GB943706A (en) | 1961-10-25 | 1961-10-25 | Freeze drying process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB943706A (en) |
-
1961
- 1961-10-25 GB GB3820361A patent/GB943706A/en not_active Expired
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