GB1295191A - - Google Patents
Info
- Publication number
- GB1295191A GB1295191A GB1295191DA GB1295191A GB 1295191 A GB1295191 A GB 1295191A GB 1295191D A GB1295191D A GB 1295191DA GB 1295191 A GB1295191 A GB 1295191A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat
- exchanger
- solution
- heated
- pipe
- 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
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/42—Concentration; Dehydration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
- B01D1/065—Evaporators with vertical tubes by film evaporating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
1295191 Concentration of caustic alkali solutions by evaporation HCH BERTRAMS AG 19 April 1971 [4 Feb 1970] 21015/71 Heading C1A [Also in Division B1] An aqueous solution of caustic alkali (e.g. 50% NaOH), is submitted to preliminary concentration by passing it through pipe 10 and falling-film evaporator 9 which is evacuated through pipe 11; the solution is next evaporated at atmospheric pressure in heat-exchanger 1, the boiling mixture from which enters liquid/ vapour separator 1a whence the solution flows through pipes 5 and 15 into flash chamber 17 at reduced pressure where further evaporation of water occurs and the concentrate is cooled, but not to a temperature below the crystallization point. The dehydrated product, e.g. molten NaOH, flows down barometer tube 16 to tank 13 from which it is withdrawn. Heat-exchanger 1 is heated by circulating fused salt from bath generator 4 through it; but alternatively it may be heated by hot gas. The vapour separated in la is used to heat the evaporator 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH162370A CH511620A (en) | 1970-02-04 | 1970-02-04 | Method and device for concentrating lye |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1295191A true GB1295191A (en) | 1972-11-01 |
Family
ID=4214767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1295191D Expired GB1295191A (en) | 1970-02-04 | 1971-04-19 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5431998B1 (en) |
| CH (1) | CH511620A (en) |
| DE (1) | DE2102166C3 (en) |
| FR (1) | FR2078055A5 (en) |
| GB (1) | GB1295191A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108314059A (en) * | 2018-03-08 | 2018-07-24 | 苏州天沃环境能源工程有限公司 | Dense effect in solid caustic soda production equipment concentrates mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2581982A1 (en) * | 1985-05-15 | 1986-11-21 | Solvay | Process and plant for the concentration of aqueous alkali metal hydroxide solutions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE494105C (en) * | 1930-03-18 | Paul H Mueller Dr Ing | Evaporator | |
| DE513789C (en) * | 1924-11-21 | 1930-12-03 | Paul H Mueller Dr Ing | Device for evaporation and cooling of solutions |
| GB635175A (en) * | 1947-12-10 | 1950-04-05 | Arthur George Matthew Hedley | Manufacture of anhydrous caustic potash |
| CH451087A (en) * | 1966-12-13 | 1968-05-15 | Rudisleben Chemieanlagenbau | Method and means for concentrating liquid mixtures |
-
1970
- 1970-02-04 CH CH162370A patent/CH511620A/en not_active IP Right Cessation
-
1971
- 1971-01-18 DE DE19712102166 patent/DE2102166C3/en not_active Expired
- 1971-02-02 FR FR7103373A patent/FR2078055A5/fr not_active Expired
- 1971-02-03 JP JP444971A patent/JPS5431998B1/ja active Pending
- 1971-04-19 GB GB1295191D patent/GB1295191A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108314059A (en) * | 2018-03-08 | 2018-07-24 | 苏州天沃环境能源工程有限公司 | Dense effect in solid caustic soda production equipment concentrates mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2102166C3 (en) | 1985-01-31 |
| DE2102166A1 (en) | 1971-08-19 |
| JPS5431998B1 (en) | 1979-10-11 |
| DE2102166B2 (en) | 1979-03-01 |
| FR2078055A5 (en) | 1971-11-05 |
| CH511620A (en) | 1971-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |