GB496193A - Improvements in or relating to evaporating and crystalling liquids - Google Patents

Improvements in or relating to evaporating and crystalling liquids

Info

Publication number
GB496193A
GB496193A GB17342/38A GB1734238A GB496193A GB 496193 A GB496193 A GB 496193A GB 17342/38 A GB17342/38 A GB 17342/38A GB 1734238 A GB1734238 A GB 1734238A GB 496193 A GB496193 A GB 496193A
Authority
GB
United Kingdom
Prior art keywords
air
stages
condenser
steam
liquids
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
GB17342/38A
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB496193A publication Critical patent/GB496193A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B01D9/0022—Evaporation of components of the mixture to be separated by reducing pressure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

<PICT:0496193/III/1> In the crystallization and/or vacuum evaporation of liquids, e.g. saline solutions, in stages with the aid of air introduced as a stirring medium, the air is admitted into the successive stages under a pressure which is decreased as the degree of vacuum is increased in the successive stages. The same quantity of air is preferably used in each stage, e.g. about 20-80 cubic metres per stage. An evaporator 1 is divided by partitions 2, 3, 4 into four stages into which air is injected by valved pipes 30-33. Air and vapours are taken off through lines 7 to a common condenser 8 and in the stages of higher vacuum the gases are compressed by steam injectors 9-11. Cooling water is injected into the condenser 8 by a pipe 12 and the gases are removed by a steam injector 13 to a condenser 14 where the steam is condensed and from which air is evacuated and returned to the cycle by a pump 15. The temperature of the solution in the different stages is for example 25, 15, 8, and 2 DEG C.
GB17342/38A 1937-06-18 1938-06-10 Improvements in or relating to evaporating and crystalling liquids Expired GB496193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE496193X 1937-06-18

Publications (1)

Publication Number Publication Date
GB496193A true GB496193A (en) 1938-11-25

Family

ID=6544999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17342/38A Expired GB496193A (en) 1937-06-18 1938-06-10 Improvements in or relating to evaporating and crystalling liquids

Country Status (2)

Country Link
FR (1) FR838952A (en)
GB (1) GB496193A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074007B (en) * 1957-06-06 1960-01-28 Metallgesellschaft Aktiengesell schaft Frankfurt/M Method of crystallization
US3050114A (en) * 1959-12-01 1962-08-21 Hunt Foods Inc Apparatus for concentrating food products
US4211610A (en) * 1972-10-12 1980-07-08 The Cambrian Engineering Group Limited Apparatus for heat and mass transfer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074007B (en) * 1957-06-06 1960-01-28 Metallgesellschaft Aktiengesell schaft Frankfurt/M Method of crystallization
US3050114A (en) * 1959-12-01 1962-08-21 Hunt Foods Inc Apparatus for concentrating food products
US4211610A (en) * 1972-10-12 1980-07-08 The Cambrian Engineering Group Limited Apparatus for heat and mass transfer

Also Published As

Publication number Publication date
FR838952A (en) 1939-03-21

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