GB1246915A - A method of dehydrating sodium perborate tetrahydrate - Google Patents
A method of dehydrating sodium perborate tetrahydrateInfo
- Publication number
- GB1246915A GB1246915A GB4690069A GB4690069A GB1246915A GB 1246915 A GB1246915 A GB 1246915A GB 4690069 A GB4690069 A GB 4690069A GB 4690069 A GB4690069 A GB 4690069A GB 1246915 A GB1246915 A GB 1246915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- air
- temperature
- drier
- sodium perborate
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
- C01B15/12—Peroxyhydrates; Peroxyacids or salts thereof containing boron
- C01B15/126—Dehydration of solid hydrated peroxyborates to less hydrated or anhydrous products
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Drying Of Solid Materials (AREA)
- Drying Of Gases (AREA)
Abstract
1,246,915. Dehydrating sodium perborate tetrahydrate. KALI-CHEMIE A.G. 23 Sept., 1969 [5 Oct., 1968], No. 46900/69. Heading C1A. Sodium perborate tetrahydrate is dehydrated in a vibratory drier in several zones in which it is contacted with gases at successively higher temperatures, the temperature in a first zone being at least 80‹ C. and not more than 160‹ C. in a final zone and before leaving the drier, it is cooled with air between 0‹ and 25‹ C. In order to produce the monohydrate, the temperature of the gases introduced rises from 85‹ C. in the first zone to 145‹ C. in the final heating zone, however, if it is only required to remove 0À3 to 0À7 moles water per mol. tetrahydrate, the temperature of the gases rises from 80‹ C. in the first zone to 95‹ C. in the final heating zone. In the examples given, there are four separate heating zones and the cooling zone in the drier; air at the various temperatures is obtained by mixing air at ambient temperature and steam-heated air in various proportions, and moist air and entrained dust is extracted in exhaust pipes. The dust may be recovered in a cyclone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681801470 DE1801470B1 (en) | 1968-10-05 | 1968-10-05 | Process for dewatering sodium perborate tetrahydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1246915A true GB1246915A (en) | 1971-09-22 |
Family
ID=5709764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4690069A Expired GB1246915A (en) | 1968-10-05 | 1969-09-23 | A method of dehydrating sodium perborate tetrahydrate |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT290462B (en) |
| BE (1) | BE739722A (en) |
| BR (1) | BR6912461D0 (en) |
| DE (1) | DE1801470B1 (en) |
| ES (1) | ES371346A1 (en) |
| FR (1) | FR2019994A1 (en) |
| GB (1) | GB1246915A (en) |
| NL (1) | NL6914983A (en) |
| NO (1) | NO120186B (en) |
| SE (1) | SE344580B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131477A (en) * | 1982-12-13 | 1984-06-20 | Schmidt Gmbh & Co Kg Metallwar | A fixing device for attaching a closure member to clock or watch case or the like |
| US5104631A (en) * | 1988-01-26 | 1992-04-14 | Interox Chimica S.P.A. | Process for producing sodium perborate monohydrate, partially crystallized sodium perborate monohydrate, and washing powders for textiles |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2444780C2 (en) * | 1974-09-19 | 1987-02-19 | Peroxid-Chemie GmbH, 8023 Höllriegelskreuth | Process for the preparation of abrasion-resistant sodium perborate monohydrate |
| FR2417470A1 (en) * | 1978-02-16 | 1979-09-14 | Air Liquide | Anhydrous sodium perborate prepn. - by dehydration of hydrated sodium perborate in presence of hot, decarbonated, dry air |
-
1968
- 1968-10-05 DE DE19681801470 patent/DE1801470B1/en active Pending
-
1969
- 1969-09-09 ES ES371346A patent/ES371346A1/en not_active Expired
- 1969-09-16 BR BR21246169A patent/BR6912461D0/en unknown
- 1969-09-23 GB GB4690069A patent/GB1246915A/en not_active Expired
- 1969-10-02 BE BE739722D patent/BE739722A/xx unknown
- 1969-10-02 FR FR6933727A patent/FR2019994A1/fr not_active Withdrawn
- 1969-10-03 NL NL6914983A patent/NL6914983A/xx unknown
- 1969-10-03 NO NO3941/69A patent/NO120186B/no unknown
- 1969-10-03 AT AT935669A patent/AT290462B/en not_active IP Right Cessation
- 1969-10-03 SE SE1366269A patent/SE344580B/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131477A (en) * | 1982-12-13 | 1984-06-20 | Schmidt Gmbh & Co Kg Metallwar | A fixing device for attaching a closure member to clock or watch case or the like |
| US5104631A (en) * | 1988-01-26 | 1992-04-14 | Interox Chimica S.P.A. | Process for producing sodium perborate monohydrate, partially crystallized sodium perborate monohydrate, and washing powders for textiles |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1801470B1 (en) | 1970-01-15 |
| SE344580B (en) | 1972-04-24 |
| FR2019994A1 (en) | 1970-07-10 |
| BR6912461D0 (en) | 1973-01-09 |
| ES371346A1 (en) | 1971-10-16 |
| NL6914983A (en) | 1970-04-07 |
| BE739722A (en) | 1970-04-02 |
| NO120186B (en) | 1970-09-14 |
| AT290462B (en) | 1971-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES448299A1 (en) | Process for thermal decomposition of aluminum chloride hexahydrate | |
| ES382568A1 (en) | Cooling tower system | |
| GB1403449A (en) | Manufacture of percarbonate | |
| BG32267A3 (en) | Method for selective separation of dispersed particles in gas | |
| ES420753A1 (en) | Process for the production of particles of sodium perborate monohydrate having an increase resistance to abrasion | |
| GB1322443A (en) | Non-dusting high temperature rotary dryer | |
| GB1246915A (en) | A method of dehydrating sodium perborate tetrahydrate | |
| GB1389769A (en) | Method of recovering fluorine components from waste gases | |
| ES389462A1 (en) | Process for the production of anhydrous potassium magnesium sulfate material with low hygroscopicity from hydrated potassium magnesium sulfate material | |
| GB1307716A (en) | Process for reducing the combined sulphur content of claus tail gases | |
| FR2110141A5 (en) | 2-thiazolyl-benzimidazoles prodn - from thiazole-4-carboxy- acid and ethylchloroformate with phenylenediamine via thiazolyl-carbo | |
| GB1520127A (en) | Sodium perborate monohydrate | |
| GB1392522A (en) | Production of ferrous sulphate monohydrate | |
| FR2049779A5 (en) | Recovery of chemicals from sulphite pulp - waste liquor | |
| IL31844A0 (en) | Process for the cooling of cleavage-gas or synthesised gas and similar gases as well as heat exchanger for carrying out this process | |
| GB951383A (en) | A process for recovering phosphoric acid anhydride | |
| GB1202670A (en) | Process for dehydrating hydrated salts | |
| SU141101A1 (en) | The method of drying gypsum blocks | |
| KR850006537A (en) | Method for preparing sodium perborate monohydrate | |
| GB1405616A (en) | Manufacture of sulphur trioxide | |
| SU169129A1 (en) | The method of obtaining humic fertilizers | |
| FR2046107A5 (en) | Firing ceramic tiles | |
| SU111787A1 (en) | Zone grain drying method and dryer for implementing the method | |
| SU145551A1 (en) | The method of regeneration of silica gel in the installations of hydrogen drying | |
| SU144160A1 (en) | The method of obtaining granulated active alumina |