IL42815A - Method and apparatus for crystallization - Google Patents

Method and apparatus for crystallization

Info

Publication number
IL42815A
IL42815A IL42815A IL4281573A IL42815A IL 42815 A IL42815 A IL 42815A IL 42815 A IL42815 A IL 42815A IL 4281573 A IL4281573 A IL 4281573A IL 42815 A IL42815 A IL 42815A
Authority
IL
Israel
Prior art keywords
crystallization
zone
vacuum
chamber
solution
Prior art date
Application number
IL42815A
Other versions
IL42815A0 (en
Inventor
H Walther
Original Assignee
Benckiser Gmbh Joh A
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 Benckiser Gmbh Joh A filed Critical Benckiser Gmbh Joh A
Publication of IL42815A0 publication Critical patent/IL42815A0/en
Publication of IL42815A publication Critical patent/IL42815A/en

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
    • 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
    • B01D9/0031—Evaporation of components of the mixture to be separated by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0063—Control or regulation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (11)

42815/2 WHAT AVE CLAIM IS: -
1. A m ethod of crystallizing a substance from a solution thereof whi ch compris es ci rculating the solution around a system compri sing a lower crystallization zone maintained at atmospheric pressure or slightly above, and an evaporation zone and an upper vacuum zone , the circul ation being e f fected by ebul lition of the solution in the evaporation zone .
2. A method as claimed in Claim 1 in. hich the pressure in the vacuum zone i s maintained from 10 to 760 Torr .
3. A method as claimed in Claim 2 in which the pres sure in the vacuum zone is maintained at from 20 to 55 Torr.
4. A method a s claimed in any one of the preceding claims in which the level of liquid in the vacuum chamber is maintained constant.
5. A method as claimed in Claim 4 in which the level of liquid in the vacuum chamber is maintained constant by varying the pressure of the gas above the liquid in the lower crystallization chamber.
6. · A method as claimed in any one of the preceding claims wherein agitation is effected in the crystallizatio zone. 42815/2
7. A method as claimed in Claim 1 substantially as hereinbefore described and with reference to the accompanying drawings.
8. Apparatus for crystallizing a substance from a solution thereof which comprises a crystallization chamber in spatially i fluid connection with a/higher vacuum chamber via ($.) a first conduit and a heat exchanger and (ii) a second conduit, the vacuum and crystallization chambers each being provided with said solution inlet means a-iid-a crystallization chamber being provided with crystals outlet means.
9. Apparatus as claimed in Claim 8 in which the heat exchanger is connected to the upper part of the first conduit.
10. Apparatus as claimed in Claim 8 or Claim 9 provided with a differential manometer to measure the pressure difference between the vacuum chamber and the crystallization chamber.
11. · Crystallization apparatus as claimed in Claim 8 ' substantially as hereinbefore described and with reference to the accompanying drawings.
IL42815A 1972-08-15 1973-07-24 Method and apparatus for crystallization IL42815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US280928A US3859052A (en) 1972-08-15 1972-08-15 Crystallization apparatus having pressure-liquid level control means

Publications (2)

Publication Number Publication Date
IL42815A0 IL42815A0 (en) 1973-10-25
IL42815A true IL42815A (en) 1976-10-31

Family

ID=23075209

Family Applications (1)

Application Number Title Priority Date Filing Date
IL42815A IL42815A (en) 1972-08-15 1973-07-24 Method and apparatus for crystallization

Country Status (11)

Country Link
US (1) US3859052A (en)
JP (1) JPS4958080A (en)
BE (1) BE803588A (en)
BR (1) BR7306287D0 (en)
DE (1) DE2326753A1 (en)
FR (1) FR2196183B1 (en)
GB (1) GB1447281A (en)
IE (1) IE37955B1 (en)
IL (1) IL42815A (en)
IT (1) IT989085B (en)
NL (1) NL7311196A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT347404B (en) * 1976-01-29 1978-12-27 Ruthner Industrieanlagen Ag DEVICE FOR PROMOTING SOLUTIONS AND Sludge
US4913771A (en) * 1988-11-25 1990-04-03 Mcintyre Glover C Method for dewatering sludge or slurry
TW304890B (en) * 1994-12-08 1997-05-11 Sulzer Chemtech Ag
US6892471B2 (en) * 2003-07-02 2005-05-17 Anders T. Ragnarsson Sludge dryer
CN102407030A (en) * 2011-10-24 2012-04-11 张吉浩 Normal pressure crystallization method for monosodium glutamate
CN109646974A (en) * 2017-10-10 2019-04-19 中国石油化工股份有限公司 A kind of evaporated crystallization device producing Cymag and method
EP4119505A1 (en) * 2021-07-16 2023-01-18 Hydromecanique Et Frottement Method for processing a fluid comprising salts and installation for implementing the method
JP7767991B2 (en) * 2022-03-08 2025-11-12 住友金属鉱山株式会社 Method for controlling impurity quality in crystals

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831121A (en) * 1930-01-23 1931-11-10 Buffalo Foundry & Machine Comp Evaporating apparatus
DE587293C (en) * 1930-05-09 1933-11-01 Dorr Company Inc Process for separating solid substances suspended in a liquid
US1879445A (en) * 1931-01-19 1932-09-27 Eastman Kodak Co Process of crystallizing salts from solutions containing them
DE618727C (en) * 1931-11-06 1935-09-14 Krystal As Device for the generation of relatively large crystals by evaporation under vacuum or by vacuum cooling
US2876182A (en) * 1952-06-21 1959-03-03 Int Salt Co Method and apparatus for treating salts
US2819154A (en) * 1953-12-11 1958-01-07 Foster Wheeler Corp Apparatus for producing crystalline materials
NL215480A (en) * 1956-07-03
FR1393567A (en) * 1964-02-14 1965-03-26 Method and device for the continuous concentration-crystallization of liquid solutions such as sweet syrups
FR1480277A (en) * 1966-03-29 1967-05-12 Improvements to installations for the crystallization of a product in solution, in particular anhydrous sodium sulphate
US3467162A (en) * 1966-07-11 1969-09-16 Charles W Putnam Process of making concentrated phosphoric acid of improved clarity characteristics
US3585237A (en) * 1966-09-29 1971-06-15 Wellman Lord Inc Crystallization of urea
FR1567872A (en) * 1967-07-11 1969-05-23 Institut Francais Du Petrole CRYSTALLIZER
US3514263A (en) * 1969-06-23 1970-05-26 Jan Michal Malek Fluidized bed crystallization device

Also Published As

Publication number Publication date
NL7311196A (en) 1974-02-19
IT989085B (en) 1975-05-20
JPS4958080A (en) 1974-06-05
IL42815A0 (en) 1973-10-25
FR2196183B1 (en) 1977-09-09
IE37955L (en) 1974-02-15
BE803588A (en) 1973-12-03
DE2326753A1 (en) 1974-02-28
FR2196183A1 (en) 1974-03-15
IE37955B1 (en) 1977-11-23
BR7306287D0 (en) 1974-07-18
GB1447281A (en) 1976-08-25
US3859052A (en) 1975-01-07

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