GB1168087A - Means for Controlling the Concentration of Process Liquids - Google Patents

Means for Controlling the Concentration of Process Liquids

Info

Publication number
GB1168087A
GB1168087A GB386466A GB386466A GB1168087A GB 1168087 A GB1168087 A GB 1168087A GB 386466 A GB386466 A GB 386466A GB 386466 A GB386466 A GB 386466A GB 1168087 A GB1168087 A GB 1168087A
Authority
GB
United Kingdom
Prior art keywords
liquid
concentration
evaporator
vapour
outlet
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
GB386466A
Inventor
Alfred Thomas Brand
Raymond Fearon
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.)
Fisons Fertilizers Ltd
Fisons Ltd
Original Assignee
Fisons Fertilizers Ltd
Fisons Ltd
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 Fisons Fertilizers Ltd, Fisons Ltd filed Critical Fisons Fertilizers Ltd
Priority to GB386466A priority Critical patent/GB1168087A/en
Publication of GB1168087A publication Critical patent/GB1168087A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/135—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fertilizers (AREA)

Abstract

1,168,087. Automatic control of liquid concentration. FISONS FERTILIZER Ltd. Feb.20, 1967 [Jan.28, 1966], No.3864/66. Heading G3R. Apparatus for automatically controlling the concentration of a liquid, such as phosphoric acid, contained in an evaporator 1 comprises a thermally sensitive device 5 placed in the liquid to provide a signal representative of the boiling point of the liquid and a transducer 6 providing a signal representing the pressure, and hence the boiling point, of the vapour in the evaporator 1 above the liquid, the two signals being fed to a recording controller 8 which is operative upon a valve 9 to control the admission of the liquid to be concentrated to the evaporator by way of a feed line 2 thus to maintain a given temperature difference between that of the liquid and of the vapour above the liquid so as to provide the derived concentration in the liquid. The concentrated liquid is withdrawn by means of an outlet 3 and the vapour by an outlet 4. The device 5 may be a thermocouple or a resistance thermometer.
GB386466A 1966-01-28 1966-01-28 Means for Controlling the Concentration of Process Liquids Expired GB1168087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB386466A GB1168087A (en) 1966-01-28 1966-01-28 Means for Controlling the Concentration of Process Liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB386466A GB1168087A (en) 1966-01-28 1966-01-28 Means for Controlling the Concentration of Process Liquids

Publications (1)

Publication Number Publication Date
GB1168087A true GB1168087A (en) 1969-10-22

Family

ID=9766327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB386466A Expired GB1168087A (en) 1966-01-28 1966-01-28 Means for Controlling the Concentration of Process Liquids

Country Status (1)

Country Link
GB (1) GB1168087A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees