ES274178A1 - Improvements in or relating to control systems for a multi-effect evaporator - Google Patents
Improvements in or relating to control systems for a multi-effect evaporatorInfo
- Publication number
- ES274178A1 ES274178A1 ES0274178A ES274178A ES274178A1 ES 274178 A1 ES274178 A1 ES 274178A1 ES 0274178 A ES0274178 A ES 0274178A ES 274178 A ES274178 A ES 274178A ES 274178 A1 ES274178 A1 ES 274178A1
- Authority
- ES
- Spain
- Prior art keywords
- effect
- controller
- valve
- lrc4
- trc4
- 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
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
<PICT:0928470/III/1> In a multi-effect evaporator system, for concentrating aqueous solutions continuously, the sub-atmospheric pressure in the final effect 4 is automatically controlled by a pressure recordercontroller PRC4 and the flow of aqueous solution into, and the flow of concentrate out of, the final effect are automatically controlled by a temperature recorder-controller TRC4 and a liquid-level recorder-controller LRC4, respectively, so that a concentrate of constant composition is withdrawn from the system. A vacuum is applied to the final effect and the pressure within it is maintained constant by an air-bleed 11 controlled by a differential pressure cell PRC4. The temperature of the boiling liquid in the down-corner of the final effect is measured by platinum resistance thermometer 14. When controller TRC4 indicates that the desired solute concentration has been reached, valve 12 is opened and concentrate flows out of the system through line 13. At the same time, controller LRC4 causes valve 10 to open, and solution flows from effect 3 into effect 4. The concentration of solution in effect 4 is thus decreased and its boiling temperature drops so that controller TRC4 causes valve 12 to close again. When the liquid-level in effect 4 is restored to its predetermined valve, valve 10 will be closed by controller LRC4. The concentration of aqueous uranyl nitrate solution is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB359961A GB928470A (en) | 1961-01-31 | 1961-01-31 | Improvements in or relating to control systems for a multi-effect evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES274178A1 true ES274178A1 (en) | 1962-07-16 |
Family
ID=9761374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0274178A Expired ES274178A1 (en) | 1961-01-31 | 1962-01-30 | Improvements in or relating to control systems for a multi-effect evaporator |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES274178A1 (en) |
| GB (1) | GB928470A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1239250B (en) * | 1963-03-06 | 1967-04-20 | Buckau Wolf Maschf R | Evaporator with vertical heating pipes and evaporator system for the sugar industry |
| CN113476871A (en) * | 2021-06-03 | 2021-10-08 | 广西锦东自动化设备有限公司 | Multi-effect evaporation control process for one-time tank passing by self pressure difference |
| CN113603171B (en) * | 2021-08-09 | 2023-08-22 | 上海市政工程设计研究总院（集团）有限公司 | Treatment method for high-salt wastewater generated by hazardous waste incineration and washing |
-
1961
- 1961-01-31 GB GB359961A patent/GB928470A/en not_active Expired
-
1962
- 1962-01-30 ES ES0274178A patent/ES274178A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB928470A (en) | 1963-06-12 |
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