GB576505A - Spray crystallizing apparatus and process - Google Patents
Spray crystallizing apparatus and processInfo
- Publication number
- GB576505A GB576505A GB18898/43A GB1889843A GB576505A GB 576505 A GB576505 A GB 576505A GB 18898/43 A GB18898/43 A GB 18898/43A GB 1889843 A GB1889843 A GB 1889843A GB 576505 A GB576505 A GB 576505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crystallizing apparatus
- crystals
- nitroguanidine
- spray
- spray crystallizing
- 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
- B01D9/0009—Crystallisation cooling by heat exchange by direct heat exchange with added cooling fluid
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The improvement in the method of crystallising nitroguanidine described in the parent Specification comprises dispersing the nitroguanidine solution into and countercurrent to a current of air which is caused to impinge upon a deflecting surface on which the crystals are deposited, the crystals being recovered by washing them from the surface and filtering the slurry thus obtained.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US571527XA | 1941-06-27 | 1941-06-27 | |
US260847XA | 1942-12-10 | 1942-12-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB576505A true GB576505A (en) | 1946-04-08 |
Family
ID=26700758
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7487/42A Expired GB571527A (en) | 1941-06-27 | 1942-06-02 | Improvements in or relating to the production of crystalline nitroguanidine in an extremely fine state of subdivision |
GB18898/43A Expired GB576505A (en) | 1941-06-27 | 1943-11-12 | Spray crystallizing apparatus and process |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7487/42A Expired GB571527A (en) | 1941-06-27 | 1942-06-02 | Improvements in or relating to the production of crystalline nitroguanidine in an extremely fine state of subdivision |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH260847A (en) |
GB (2) | GB571527A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179562A (en) * | 1985-09-03 | 1987-03-11 | Nestle Sa | Dryer and drying method |
EP0332067A1 (en) * | 1988-03-08 | 1989-09-13 | Röhm Gmbh | Process for the preparation of spray-dried emulsion polymers |
CN110204461A (en) * | 2019-05-15 | 2019-09-06 | 西安万德能源化学股份有限公司 | The microchannel crystallization processes and device of a kind of nitroguanidine crystal and nitroguanidine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1004090B (en) * | 1955-10-22 | 1957-03-07 | Chemisches Werk Lowi G M B H | Process for the production of nitroguanidine with a high specific surface |
CN114288703B (en) * | 2022-01-25 | 2023-08-25 | 南京吉才汇科技有限公司 | Crystallization separation equipment for boric acid production |
-
1942
- 1942-06-02 GB GB7487/42A patent/GB571527A/en not_active Expired
-
1943
- 1943-11-12 GB GB18898/43A patent/GB576505A/en not_active Expired
-
1945
- 1945-11-22 CH CH260847D patent/CH260847A/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2179562A (en) * | 1985-09-03 | 1987-03-11 | Nestle Sa | Dryer and drying method |
GB2179562B (en) * | 1985-09-03 | 1989-08-31 | Nestle Sa | Dryer and drying method |
EP0332067A1 (en) * | 1988-03-08 | 1989-09-13 | Röhm Gmbh | Process for the preparation of spray-dried emulsion polymers |
CN110204461A (en) * | 2019-05-15 | 2019-09-06 | 西安万德能源化学股份有限公司 | The microchannel crystallization processes and device of a kind of nitroguanidine crystal and nitroguanidine |
CN110204461B (en) * | 2019-05-15 | 2022-04-05 | 西安万德能源化学股份有限公司 | Nitroguanidine crystal and microchannel crystallization process and device of nitroguanidine |
Also Published As
Publication number | Publication date |
---|---|
GB571527A (en) | 1945-08-29 |
CH260847A (en) | 1949-04-15 |
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