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GB923138A - Process and apparatus for crystallising solutions - Google Patents

Process and apparatus for crystallising solutions

Info

Publication number
GB923138A
GB923138A GB11418/61A GB1141861A GB923138A GB 923138 A GB923138 A GB 923138A GB 11418/61 A GB11418/61 A GB 11418/61A GB 1141861 A GB1141861 A GB 1141861A GB 923138 A GB923138 A GB 923138A
Authority
GB
United Kingdom
Prior art keywords
container
cylindrical pipe
space
conical
treatment
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
GB11418/61A
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.)
Dr C Otto and Co GmbH
Original Assignee
Dr C Otto and Co GmbH
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 Dr C Otto and Co GmbH filed Critical Dr C Otto and Co GmbH
Publication of GB923138A publication Critical patent/GB923138A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/14—Sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Removal Of Specific Substances (AREA)
  • Physical Water Treatments (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

<PICT:0923138/III/1> In a process for the continuous crystallization of heptahydrate of iron sulphate from sulphuric acid pickling solutions, the liquid to be treated is introduced into a container 2 having a circular cross-section and a conical lower portion, flows downwards in said container outside a cylindrical pipe 9 disposed concentrically inside the container and separating the two treatment spaces from each other, as far as the zone of the conical container portion, and from there rises again through the treatment space disposed inside the cylindrical pipe, air being blown into the inner treatment space by means of a ring of nozzles 14 at the lower extremity of said space so as to secure a rapid upward movement. The crystals, cooled also by coils 10, collect in container 2 and via automatic pneumatic conveyer system 12 are taken off at 15.
GB11418/61A 1960-04-13 1961-03-28 Process and apparatus for crystallising solutions Expired GB923138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO7351A DE1114793B (en) 1960-04-13 1960-04-13 Process and device for the continuous crystallization of iron sulfate heptahydrate from sulfuric acid pickling solutions

Publications (1)

Publication Number Publication Date
GB923138A true GB923138A (en) 1963-04-10

Family

ID=7351125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11418/61A Expired GB923138A (en) 1960-04-13 1961-03-28 Process and apparatus for crystallising solutions

Country Status (3)

Country Link
US (1) US3193361A (en)
DE (1) DE1114793B (en)
GB (1) GB923138A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1527945A (en) * 1967-04-05 1968-06-07 Commissariat Energie Atomique Method and device for water purification
JPS5544644B2 (en) * 1971-09-23 1980-11-13
JPS5131239B2 (en) * 1974-09-13 1976-09-06
US4308236A (en) * 1979-09-11 1981-12-29 Hilda Garcia Heat exchangers for crystallization of crystallizable suspensions while in motion
IT1232987B (en) * 1989-09-13 1992-03-13 Tmci Padovan S P A WINE STABILIZATION DEVICE BEFORE BOTTLING
WO1992012392A1 (en) * 1991-01-07 1992-07-23 Comalco Aluminium Limited Heating and/or cooling of vessels
US5523064A (en) * 1994-11-02 1996-06-04 Swenson Process Equipment, Inc., A Delaware Corp. Crystallization apparatus
CA3041545C (en) 2016-11-14 2023-04-18 William H. Mitchell, Jr. Systems and methods for separating soluble solutions

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US15119A (en) * 1856-06-17 Saw-set
US1256068A (en) * 1915-09-20 1918-02-12 First Trust And Savings Company Method of recovering sulfate crystals.
US1693786A (en) * 1924-09-17 1928-12-04 Krystal As Process for the crystallization of solid substances in a coarse granular form from solutions
US1997277A (en) * 1932-09-06 1935-04-09 American Potash & Chem Corp Crystallization apparatus
US2288667A (en) * 1938-08-15 1942-07-07 American Potash & Chem Corp Method of crystallizing substances from solution
US2492333A (en) * 1945-05-15 1949-12-27 Swindin Norman Apparatus for continuously purifying and concentrating acid pickling liquors
GB623446A (en) * 1946-06-06 1949-05-18 Norman Swindin Improvements in and relating to processes and apparatus for the regeneration of spent iron and steel acid pickle liquors
US2470822A (en) * 1947-08-16 1949-05-24 American Potash & Chem Corp Process for manufacturing coarse granular potassium chloride
US2664349A (en) * 1948-08-07 1953-12-29 Electro Chimie Metal Method of precipitating solid particles from a suspension of the particles in a liquor
US2631926A (en) * 1949-10-03 1953-03-17 Blaw Knox Co Apparatus for concentrating a solution and separating crystals therefrom
US2827366A (en) * 1954-03-04 1958-03-18 Olin Mathieson Crystallization apparatus
US2983589A (en) * 1956-09-24 1961-05-09 Phillips Petroleum Co Process for the purification of crystals
US3071447A (en) * 1958-09-09 1963-01-01 Whiting Corp Hydraulic classifier

Also Published As

Publication number Publication date
US3193361A (en) 1965-07-06
DE1114793B (en) 1961-10-12

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