GB689497A - Improvements in or relating to spray drying - Google Patents
Improvements in or relating to spray dryingInfo
- Publication number
- GB689497A GB689497A GB18018/50A GB1801850A GB689497A GB 689497 A GB689497 A GB 689497A GB 18018/50 A GB18018/50 A GB 18018/50A GB 1801850 A GB1801850 A GB 1801850A GB 689497 A GB689497 A GB 689497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- duct
- gases
- drying
- gas
- chamber
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Drying Of Solid Materials (AREA)
Abstract
<PICT:0689497/III/1> Spray-drying is effected by spraying the liquid into a downwardly-flowing stream of hot gases at a temperature not higher than 750 DEG F, and introducing into the resulting mixture, at a level below the spraying-device, hot combustion gases having a temperature higher than 1000 DEG F. The gas stream of lower temperature is obtained by diluting a portion of the hot combustion gases with cooler gases. Drying chamber 1 is provided with a spraying-device 6 comprising a liquid inlet pipe 6a, a vaned wheel 8 driven by an electric motor 7, mounted in cylinder 5 and surrounded by a duct 10 which contains directing-vanes 11. Furnace 14, which comprises a brick-lined cylinder provided at the base with gas-burners 19 and an air-inlet 20, is connected to chamber 1 at two different levels by ducts 21 and 13. Duct 21 is below the level of spray wheel 8, while duct 13 communicates with gas-flue 12, which opens into duct 10. An inlet 25 for supplying secondary air or a portion of the exhaust gases, into the furnace, is provided above duct 21. All the pipes leading into or out of the furnace are provided with dampers. Hydrocarbon gas or other fuel is burned in burners 19 with air introduced through inlet 20. A portion of the resulting hot gases, preferably at a temperature of about 1500 DEG F, is introduced into the drying-chamber through duct 21. The remainder of the hot gases is cooled to 750 DEG F or below by diluting gas introduced through inlet 25, and the mixture is introduced into the top of the drying-chamber via duct 13, where it forms a rotating gas blanket into which the liquid to be dried is sprayed by wheel 8. The gases containing the dried material are exhausted from the base of the drying-chamber at a temperature of about 230 DEG F, by means of a fan connected to a pipe 15 via cyclone separators (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US689497XA | 1949-08-03 | 1949-08-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB689497A true GB689497A (en) | 1953-04-01 |
Family
ID=22085748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18018/50A Expired GB689497A (en) | 1949-08-03 | 1950-07-19 | Improvements in or relating to spray drying |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB689497A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2244398A1 (en) * | 1971-09-10 | 1973-03-22 | Niro Atomizer As | METHOD AND DEVICE FOR EVAPORATING LIQUIDS |
-
1950
- 1950-07-19 GB GB18018/50A patent/GB689497A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2244398A1 (en) * | 1971-09-10 | 1973-03-22 | Niro Atomizer As | METHOD AND DEVICE FOR EVAPORATING LIQUIDS |
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