FR2313959A1 - Centrifugal sepn. of low density solids in liq. suspension - esp. aq. suspensions of yeasts, bacteria, fungoids and culture medium solns. - Google Patents
Centrifugal sepn. of low density solids in liq. suspension - esp. aq. suspensions of yeasts, bacteria, fungoids and culture medium solns.Info
- Publication number
- FR2313959A1 FR2313959A1 FR7617695A FR7617695A FR2313959A1 FR 2313959 A1 FR2313959 A1 FR 2313959A1 FR 7617695 A FR7617695 A FR 7617695A FR 7617695 A FR7617695 A FR 7617695A FR 2313959 A1 FR2313959 A1 FR 2313959A1
- Authority
- FR
- France
- Prior art keywords
- liquid
- phase
- solids
- suspension
- conc
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
Landscapes
- Centrifugal Separators (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
A process is claimed for sepg. solid material from a liquid suspension of which the density is only slightly more than that of the solid material. The liquid is fed continuously into a ring of liquid formed and maintained in the acceleration zone of the bowl of a decanter centrifuge; separation takes place in a retention time of 10 to 500 secs and at an acceleration of 2,000 to 10,000g to produce a solids-enrichd or conc. phase and a clarified liquid phase the conc. phase being conveyed at an average speed of 0.1 to 5.0 cm/s along te wall of the bowl in the direction opposite to that of the acceleration force so that the fluid mass of conc. phase builds up an annular dam to retain the ring of liquid. The retention time is pref. 50 to 150 secs. and the acceleration 3,000 to 5,000g. Used for mechanical sepn. of solid particles, e.g. of dia. 0.5 to 5.0 um, from a liquid suspension having a density only slightly higher than that of the particles; partic. the sepn. from aq. suspension of flocculated colouring agents, microorganisms such as yeasts, bacteria, Streptomyces, fungoid growths, culture media solns. etc. This process decants off liquid to give a conc. phase with a much higher solids % wt. than the 16% or so which is obtainable employing conventional centrifugal separation; examples quote culture solns. with initial solids concs. 1% to 8% being taken up to 20% to 35% solids % wt.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752525930 DE2525930A1 (en) | 1975-06-11 | 1975-06-11 | PROCESS FOR SEPARATING SOLIDS FROM SUSPENSIONS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2313959A1 true FR2313959A1 (en) | 1977-01-07 |
| FR2313959B3 FR2313959B3 (en) | 1979-03-02 |
Family
ID=5948772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7617695A Granted FR2313959A1 (en) | 1975-06-11 | 1976-06-11 | Centrifugal sepn. of low density solids in liq. suspension - esp. aq. suspensions of yeasts, bacteria, fungoids and culture medium solns. |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS51150776A (en) |
| BE (1) | BE842855A (en) |
| BR (1) | BR7603672A (en) |
| DD (1) | DD126371A5 (en) |
| DE (1) | DE2525930A1 (en) |
| DK (1) | DK256876A (en) |
| ES (1) | ES448604A1 (en) |
| FI (1) | FI761642A (en) |
| FR (1) | FR2313959A1 (en) |
| IL (1) | IL49737A0 (en) |
| IT (1) | IT1061541B (en) |
| NL (1) | NL7606073A (en) |
| NO (1) | NO762011L (en) |
| PT (1) | PT65207B (en) |
| SE (1) | SE7606612L (en) |
| ZA (1) | ZA763415B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2546419A1 (en) * | 1983-05-24 | 1984-11-30 | Kloeckner Humboldt Wedag | APPARATUS FOR DEHYDRATING SLUDGE IN THE CENTRIFUGAL AREA OF A FULLY ENVELOPED CENTRIFUGE |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK154540C (en) * | 1986-05-06 | 1989-04-24 | Alfa Laval Separation As | decanter centrifuge |
| US4860644A (en) * | 1988-02-29 | 1989-08-29 | Donaldson Company, Inc. | Articulatable fume exhauster trunk |
| JP4153138B2 (en) * | 2000-02-10 | 2008-09-17 | 株式会社クボタ | Centrifuge |
-
1975
- 1975-06-11 DE DE19752525930 patent/DE2525930A1/en active Pending
-
1976
- 1976-05-10 SE SE7606612A patent/SE7606612L/en unknown
- 1976-06-04 NL NL7606073A patent/NL7606073A/en unknown
- 1976-06-05 ES ES448604A patent/ES448604A1/en not_active Expired
- 1976-06-08 IL IL49737A patent/IL49737A0/en unknown
- 1976-06-09 DD DD193272A patent/DD126371A5/xx unknown
- 1976-06-09 BR BR3672/76A patent/BR7603672A/en unknown
- 1976-06-09 FI FI761642A patent/FI761642A/fi not_active Application Discontinuation
- 1976-06-09 PT PT65207A patent/PT65207B/en unknown
- 1976-06-09 ZA ZA763415A patent/ZA763415B/en unknown
- 1976-06-09 IT IT24124/76A patent/IT1061541B/en active
- 1976-06-10 JP JP51067194A patent/JPS51150776A/en active Pending
- 1976-06-10 DK DK256876A patent/DK256876A/en unknown
- 1976-06-10 NO NO762011A patent/NO762011L/no unknown
- 1976-06-11 FR FR7617695A patent/FR2313959A1/en active Granted
- 1976-06-11 BE BE167842A patent/BE842855A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2546419A1 (en) * | 1983-05-24 | 1984-11-30 | Kloeckner Humboldt Wedag | APPARATUS FOR DEHYDRATING SLUDGE IN THE CENTRIFUGAL AREA OF A FULLY ENVELOPED CENTRIFUGE |
Also Published As
| Publication number | Publication date |
|---|---|
| BE842855A (en) | 1976-12-13 |
| IL49737A0 (en) | 1976-08-31 |
| DK256876A (en) | 1976-12-12 |
| PT65207B (en) | 1978-03-24 |
| NL7606073A (en) | 1976-12-14 |
| DD126371A5 (en) | 1977-07-13 |
| JPS51150776A (en) | 1976-12-24 |
| IT1061541B (en) | 1983-04-30 |
| ZA763415B (en) | 1977-05-25 |
| BR7603672A (en) | 1977-01-25 |
| DE2525930A1 (en) | 1976-12-23 |
| ES448604A1 (en) | 1977-07-01 |
| PT65207A (en) | 1976-07-01 |
| SE7606612L (en) | 1976-12-12 |
| NO762011L (en) | 1976-12-14 |
| FR2313959B3 (en) | 1979-03-02 |
| FI761642A (en) | 1976-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU1625088A (en) | Forming glass flakes | |
| DE3260096D1 (en) | Separation tube for separating by centrifugation | |
| SE8004975L (en) | FULL-SURFACE SNECKCENTRIFUG | |
| GB1524454A (en) | Adsorption columns for use in radioimmunoassays | |
| FR2313959A1 (en) | Centrifugal sepn. of low density solids in liq. suspension - esp. aq. suspensions of yeasts, bacteria, fungoids and culture medium solns. | |
| IE37455L (en) | Separating particles from a liquid | |
| EP0368621A3 (en) | Method of separating living cells | |
| US4384044A (en) | Production of microbial polysaccharides | |
| ATE35630T1 (en) | CENTRIFUGAL SEPARATOR AND OPERATION PROCEDURE OF SAME. | |
| FR2510606B1 (en) | ||
| Nordström et al. | Resistance of Escherichia coli to Penicillins VIII. Physiology of a Class II Ampicillin-Resistant Mutant | |
| AU6200080A (en) | Gas separation in liquid/gas reactors | |
| ES432549A1 (en) | Process for deacetoxycephalosporin c. | |
| IE41293L (en) | Treating aqueous effluent | |
| US3651945A (en) | Continuous culture separation apparatus | |
| FR2315988B1 (en) | ||
| FR2382273A1 (en) | Two phase centrifugal separator - has conical or spiral container starting at high speed with gradual slowing for two speeds | |
| EP0004716A3 (en) | Process for separating solids from coal liquids | |
| JPS5452372A (en) | Screw type continuous centrifugal settling device | |
| US3594315A (en) | Process for the separation of solids from a liquid by means of an artificial gravitational field | |
| SU380356A1 (en) | TUBULAR SUPERCENTRIFUGE | |
| SU1207494A1 (en) | Magnetic separator | |
| FR2184411A1 (en) | Clarification of liquids - by successive additions of polyelectrolytes to flocculate suspended solids | |
| SU1269797A1 (en) | Method of thickening suspension | |
| JPS6141550B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |