GB815603A - Subliming process carried out in a bed of fluidised solid - Google Patents
Subliming process carried out in a bed of fluidised solidInfo
- Publication number
- GB815603A GB815603A GB248456A GB248456A GB815603A GB 815603 A GB815603 A GB 815603A GB 248456 A GB248456 A GB 248456A GB 248456 A GB248456 A GB 248456A GB 815603 A GB815603 A GB 815603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bed
- gas
- condenser
- vessel
- sublimed
- 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
- B01D7/00—Sublimation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Material is sublimed by mixing with an inert solid in vessel B, introducing gas at the bottom of the vessel to fluidize the solids and to carry the material to be sublimed to condenser C, and continuously or intermittently withdrawing solids from vessel B through valve G. The <PICT:0815603/III/1> solid withdrawn is carried by gas introduced at H to fluidized bed sublimer J and cyclone K, gas containing sublimed material being combined with the gas stream to condenser C, and the solid freed from residual impurities at L and returned to the vessel B. Purified sublimate is removed from condenser C at D and gas is recirculated via pump E and heater F. In examples, salicylic acid and benzoic acid are purified by sublimation, using sand as the inert solid and nitrogen as the gas; the benzoic acid melts before being vaporized.ALSO:Benzoic acid and salicylic acid are purified by subliming the crude acid in the presence of a bed of sand fluidized with nitrogen (see Group III). The sublimate is collected in a condenser and sand is withdrawn from the bottom of the bed, resublimed in another fluidized bed, freed from unsublimable residue and recycled to the top of the bed together with the material to be sublimed. Benzoic acid melts before being vaporized.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF16778A DE1016236B (en) | 1955-02-08 | 1955-02-08 | Process for carrying out the sublimation of substances in a fluidized bed room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB815603A true GB815603A (en) | 1959-07-01 |
Family
ID=7088346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB248456A Expired GB815603A (en) | 1955-02-08 | 1956-01-25 | Subliming process carried out in a bed of fluidised solid |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH340481A (en) |
| DE (1) | DE1016236B (en) |
| FR (1) | FR1140652A (en) |
| GB (1) | GB815603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914188A (en) * | 2017-04-01 | 2017-07-04 | 来安县万博丰环保科技有限公司 | A kind of benzoic acid with new wind mechanism feeds intake dust arrester |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3784324D1 (en) * | 1986-12-10 | 1993-04-01 | Bbc Brown Boveri & Cie | METHOD AND DEVICE FOR SEPARATING AND / OR REVOLVING PARTICLES. |
| EP0274037A1 (en) * | 1986-12-10 | 1988-07-13 | BBC Brown Boveri AG | Process and device for the separation of particles |
-
1955
- 1955-02-08 DE DEF16778A patent/DE1016236B/en active Pending
- 1955-12-27 CH CH340481D patent/CH340481A/en unknown
-
1956
- 1956-01-25 GB GB248456A patent/GB815603A/en not_active Expired
- 1956-01-28 FR FR1140652D patent/FR1140652A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914188A (en) * | 2017-04-01 | 2017-07-04 | 来安县万博丰环保科技有限公司 | A kind of benzoic acid with new wind mechanism feeds intake dust arrester |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1140652A (en) | 1957-08-05 |
| CH340481A (en) | 1959-08-31 |
| DE1016236B (en) | 1957-09-26 |
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