GB876970A - Crystallizer - Google Patents
CrystallizerInfo
- Publication number
- GB876970A GB876970A GB39504/58A GB3950458A GB876970A GB 876970 A GB876970 A GB 876970A GB 39504/58 A GB39504/58 A GB 39504/58A GB 3950458 A GB3950458 A GB 3950458A GB 876970 A GB876970 A GB 876970A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- tank
- seed crystals
- annular passage
- situated
- 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
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Peptides Or Proteins (AREA)
Abstract
<PICT:0876970/III/1> The number of seed crystals in a crystallising tank 1, comprising solution inlet 40 and crystal outlet 43, is controlled by removal of a portion of the seed crystals together with mother liquor through an annular passage 15 and pipe 24 to a redissolving tank (not shown) and returning the resulting solution together with fresh liquid to be crystallized to the crystallizing tank through inlet 40. The annular passage is formed by inner and outer tubes 16 and 17 respectively. The tubes have upper ends 18 and 19 which flare towards one another to leave an annular gap above which is situated a vertically adjustable inverted V-shaped throttling member 23. Tube 16 has an outwardly flaring lower end 20 below which is situated a stirrer 6. A quiescent zone of high pressure (read by means of manometer 26) exists in passage 15 and is controlled so as to remove seed crystals by means of vertical adjustment of member 23. The desired temperature in the crystallizing tank is maintained by means of a heat-exchange coil 9. The process may be continuous or batchwise. The annular passage may be symmetrical or asymmetrical and of circular or rectangular cross-section. Crystallizable materials specified are ammonium nitrate and sulphate, sodium sulphate and chloride, and potassium sulphate. An example for the crystallization of ammonium sulphate is given.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US545811A US2856270A (en) | 1955-11-09 | 1955-11-09 | Crystallizer |
| GB39504/58A GB876970A (en) | 1958-12-08 | 1958-12-08 | Crystallizer |
| DEO6495A DE1088922B (en) | 1958-12-08 | 1958-12-10 | Device for crystallizing from a solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB39504/58A GB876970A (en) | 1958-12-08 | 1958-12-08 | Crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB876970A true GB876970A (en) | 1961-09-06 |
Family
ID=10409902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39504/58A Expired GB876970A (en) | 1955-11-09 | 1958-12-08 | Crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB876970A (en) |
-
1958
- 1958-12-08 GB GB39504/58A patent/GB876970A/en not_active Expired
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