GB928470A - 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 evaporator

Info

Publication number
GB928470A
GB928470A GB359961A GB359961A GB928470A GB 928470 A GB928470 A GB 928470A GB 359961 A GB359961 A GB 359961A GB 359961 A GB359961 A GB 359961A GB 928470 A GB928470 A GB 928470A
Authority
GB
United Kingdom
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
Application number
GB359961A
Inventor
William Lionel Wilkinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB359961A priority Critical patent/GB928470A/en
Priority to FR886103A priority patent/FR1336084A/en
Priority to ES0274178A priority patent/ES274178A1/en
Publication of GB928470A publication Critical patent/GB928470A/en
Expired legal-status Critical Current

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TRC4 and a liquid-level recorder-controller LRC4, respectively, so that a concentrate of constant composition is withdrawn from the system.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.
GB359961A 1961-01-31 1961-01-31 Improvements in or relating to control systems for a multi-effect evaporator Expired GB928470A (en)

Priority Applications (3)

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
FR886103A FR1336084A (en) 1961-01-31 1962-01-26 Automatic instrument control system for the final stage of a multistage evaporator system
ES0274178A ES274178A1 (en) 1961-01-31 1962-01-30 Improvements in or relating to control systems for a multi-effect evaporator

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
GB928470A true GB928470A (en) 1963-06-12

Family

ID=9761374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB359961A Expired GB928470A (en) 1961-01-31 1961-01-31 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242970A (en) * 1963-03-06 1966-03-29 Buckau Wolf Maschf R Multiple-effect vertical-tube evaporator
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
CN113603171A (en) * 2021-08-09 2021-11-05 上海市政工程设计研究总院（集团）有限公司 Treatment method for hazardous waste incineration washing high-salinity wastewater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242970A (en) * 1963-03-06 1966-03-29 Buckau Wolf Maschf R Multiple-effect vertical-tube evaporator
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
CN113603171A (en) * 2021-08-09 2021-11-05 上海市政工程设计研究总院（集团）有限公司 Treatment method for hazardous waste incineration washing high-salinity wastewater
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

Also Published As

Publication number Publication date
ES274178A1 (en) 1962-07-16

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