GB612603A - Evaporating calcium chloride solutions - Google Patents

Evaporating calcium chloride solutions

Info

Publication number
GB612603A
GB612603A GB6243/47A GB624347A GB612603A GB 612603 A GB612603 A GB 612603A GB 6243/47 A GB6243/47 A GB 6243/47A GB 624347 A GB624347 A GB 624347A GB 612603 A GB612603 A GB 612603A
Authority
GB
United Kingdom
Prior art keywords
calcium chloride
per cent
solution
per
ton
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
GB6243/47A
Inventor
Cie Solvay
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.)
FRANCIS MANDEVILLE JOSCELYNE
JOHN CHARLES HENRY MCENTEE
Imperial Chemical Industries Ltd
Original Assignee
FRANCIS MANDEVILLE JOSCELYNE
JOHN CHARLES HENRY MCENTEE
Imperial Chemical Industries 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 FRANCIS MANDEVILLE JOSCELYNE, JOHN CHARLES HENRY MCENTEE, Imperial Chemical Industries Ltd filed Critical FRANCIS MANDEVILLE JOSCELYNE
Publication of GB612603A publication Critical patent/GB612603A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/42—Concentration; Dehydration
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/24—Chlorides
    • C01F11/30—Concentrating; Dehydrating; Preventing the adsorption of moisture or caking

Abstract

Solid hydrated calcium chloride is obtained from aqueous calcium chloride solutions containing between 60 and 75 per cent Ca Cl2 by exposing the solution at a temperature above 120 DEG C. and with a surface area exceeding 10 and preferably 100 square metres per ton to a gas or vapour, in which the partial water vapour pressure is kept below atmospheric pressure and preferably below 400 mm., under adiabatic conditions or under such thermal conditions that not more than 30 ton calories are gained by the system, or not more than 15 ton calories are lost, per ton of product. The ideal process, which is both adiabatic and isothermal, is represented by the use of 72 per cent calcium chloride solution at 170 DEG to 175 DEG C. and is an auto-evaporative-crystallisation process giving solid calcium chloride dihydrate. In an example, a 70 per cent Ca Cl2 solution at 175 DEG C. is sprayed down a vertical empty tower, 15 feet high, in which the pressure is maintained at 5 lbs. per square inch. A granular product containing 76 per cent Ca Cl2, having a bulk density of 0.4 to 0.5 grams per cc. is obtained. In a modification, a 70 per cent Ca Cl2 solution at 170 DEG is sprayed down a tower up which air at 180 DEG C. is blown. Film evaporation may also be used, employing (a) a heat-insulated ribbon mixer in which the solution is evaporated on the surface of granular calcium chloride in a current of air; or (b) a horizontal drum rotating partly in a bath of 72 per cent Ca Cl2 at 175 DEG C. and partly in the atmosphere.
GB6243/47A 1946-03-25 1946-03-25 Evaporating calcium chloride solutions Expired GB612603A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9116/46A GB612530A (en) 1946-03-25 1946-03-25 Evaporating caustic soda solutions

Publications (1)

Publication Number Publication Date
GB612603A true GB612603A (en) 1948-11-15

Family

ID=26239558

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9116/46A Expired GB612530A (en) 1946-03-25 1946-03-25 Evaporating caustic soda solutions
GB6243/47A Expired GB612603A (en) 1946-03-25 1946-03-25 Evaporating calcium chloride solutions

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9116/46A Expired GB612530A (en) 1946-03-25 1946-03-25 Evaporating caustic soda solutions

Country Status (7)

Country Link
US (1) US2556184A (en)
BE (2) BE472116A (en)
CH (1) CH275158A (en)
DE (1) DE819689C (en)
FR (1) FR943963A (en)
GB (2) GB612530A (en)
NL (1) NL77144C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339618A (en) * 1963-06-13 1967-09-05 Wyandotte Chemicals Corp Process for preparing powder and granular calcium chloride products

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635684A (en) * 1949-05-24 1953-04-21 Ici Ltd Manufacture of caustic soda granules
US2882126A (en) * 1954-11-18 1959-04-14 Columbia Southern Chem Corp Chemical process
US2857244A (en) * 1955-01-03 1958-10-21 Allied Chem Process for the manufacture of highdensity, anhydrous calcium chloride
US2839360A (en) * 1955-02-24 1958-06-17 Michigan Chem Corp Method for reducing the concentration of alkali metal salts in calcium chloride brines
US3250593A (en) * 1964-04-27 1966-05-10 Dow Chemical Co Method of producing calcium chloride pellets
JPS5851974A (en) * 1981-09-21 1983-03-26 Kobe Steel Ltd Recovery of cacl2 from exhaust gas-desulfurizing waste liquid
DE3727171A1 (en) * 1987-08-14 1989-02-23 Krupp Gmbh Process for the preparation of absolute ethanol

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1026724A (en) * 1912-05-21 E N Trump Porous granular hygroscopic material.
US996832A (en) * 1907-10-02 1911-07-04 Charles H Campbell Desiccating milk.
US1166225A (en) * 1913-07-28 1915-12-28 Georg Alexander Krause Process of desiccation.
AT96934B (en) * 1921-06-04 1924-05-10 Kummler & Matter Ag Process for evaporating salt solutions.
US1592971A (en) * 1925-09-26 1926-07-20 Dow Chemical Co Prepared metallic chloride and method of making same
US1660053A (en) * 1925-10-12 1928-02-21 Dow Chemical Co Prepared calcium chloride and method of making same
US1852303A (en) * 1928-11-06 1932-04-05 Dow Chemical Co Calcium chloride and method of making same
US1877733A (en) * 1930-09-24 1932-09-13 Texas Chemical Products Compan Anhydrous metallic chlorides and their preparation
US1907988A (en) * 1931-06-04 1933-05-09 Pittsburgh Plate Glass Co Preparation of anhydrous caustic
US1958034A (en) * 1933-07-03 1934-05-08 Dow Chemical Co Processing calcium chloride solution
US2032727A (en) * 1934-05-31 1936-03-03 Solvay Process Co Purification of calcium chloride brines
US2154672A (en) * 1935-10-12 1939-04-18 Calorider Corp Formed bodies of solid calcium chloride hydrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339618A (en) * 1963-06-13 1967-09-05 Wyandotte Chemicals Corp Process for preparing powder and granular calcium chloride products

Also Published As

Publication number Publication date
GB612530A (en) 1948-11-15
CH275158A (en) 1951-05-15
NL77144C (en) 1954-09-15
BE472116A (en) 1947-09-15
BE472117A (en) 1947-09-15
DE819689C (en) 1951-11-05
FR943963A (en) 1949-03-23
US2556184A (en) 1951-06-12

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