GB384726A - Improvements in and relating to the removal of sodium sulphate from solutions contain - Google Patents

Improvements in and relating to the removal of sodium sulphate from solutions contain

Info

Publication number
GB384726A
GB384726A GB2625731A GB2625731A GB384726A GB 384726 A GB384726 A GB 384726A GB 2625731 A GB2625731 A GB 2625731A GB 2625731 A GB2625731 A GB 2625731A GB 384726 A GB384726 A GB 384726A
Authority
GB
United Kingdom
Prior art keywords
sodium sulphate
sulphuric acid
sulphate
acid
solutions
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
GB2625731A
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB2625731A priority Critical patent/GB384726A/en
Publication of GB384726A publication Critical patent/GB384726A/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
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/02—Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates

Abstract

Sodium sulphate is removed from solutions containing sodium sulphate and sulphuric acid, for example spinning baths used in the manufacture of artificial silk, by adding strong sulphuric acid to the said solutions until they contain at least 30 per cent thereof and crystallizing out the sodium sulphate in the form of a hydrated acid sulphate. The solutions may be subjected to preliminary concentration and may be mixed with strong sulphuric acid at one end of a cooled crystallizing apparatus, the acid sodium sulphate being separated from the liquid at the other end of the apparatus. According to an example a solution containing sulphuric acid, sodium sulphate, glucose, and zinc sulphate is concentrated, treated with strong sulphuric acid and cooled to 15 DEG C. According to the Provisional Specification strong sulphuric acid should be added until the concentration thereof in the solution is more than 25 per cent. Specification 298,639, [Class 1 (ii), Inorganic compounds, other than &c.], is referred to.
GB2625731A 1931-09-19 1931-09-19 Improvements in and relating to the removal of sodium sulphate from solutions contain Expired GB384726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2625731A GB384726A (en) 1931-09-19 1931-09-19 Improvements in and relating to the removal of sodium sulphate from solutions contain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2625731A GB384726A (en) 1931-09-19 1931-09-19 Improvements in and relating to the removal of sodium sulphate from solutions contain

Publications (1)

Publication Number Publication Date
GB384726A true GB384726A (en) 1932-12-15

Family

ID=10240801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2625731A Expired GB384726A (en) 1931-09-19 1931-09-19 Improvements in and relating to the removal of sodium sulphate from solutions contain

Country Status (1)

Country Link
GB (1) GB384726A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645561A (en) * 1948-11-23 1953-07-14 Ind Rayon Corp Sodium sulfate recovery
US3017245A (en) * 1960-01-14 1962-01-16 Dow Chemical Co Removal of sodium sulfate from caustic salt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645561A (en) * 1948-11-23 1953-07-14 Ind Rayon Corp Sodium sulfate recovery
US3017245A (en) * 1960-01-14 1962-01-16 Dow Chemical Co Removal of sodium sulfate from caustic salt

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