GB830738A - Improvements in or relating to methods for the thermal treatment of aqueous liquors - Google Patents

Improvements in or relating to methods for the thermal treatment of aqueous liquors

Info

Publication number
GB830738A
GB830738A GB29658/58A GB2965858A GB830738A GB 830738 A GB830738 A GB 830738A GB 29658/58 A GB29658/58 A GB 29658/58A GB 2965858 A GB2965858 A GB 2965858A GB 830738 A GB830738 A GB 830738A
Authority
GB
United Kingdom
Prior art keywords
liquors
acids
vapours
boiling
aqueous
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
GB29658/58A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB830738A publication Critical patent/GB830738A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

Aqueous liquors are distilled or concentrated by conducting into the liquors vapours of a thermally stable organic substance (or a silicone) which is immiscible with water and has a higher boiling-point or range than the liquors and a different specific gravity and allowing the vapours to condense in the liquors at such a rate that the liquors are heated to boiling and distil. The process is suitable for heating corrosive liquors, e.g. in concentrating dilute hydrohalic acids or aqueous solutions of non-volatile acids, such as sulphuric and phosphoric acids, or acid salts, such as primary and secondary phosphates and bisulphites, or salts which are hydrolysed, such as magnesium chloride, or in the removal of aqueous acid by distillation from reaction mixtures which liberate acids, such as the interaction of alkali metal chloride and phosphoric acid to give phosphate and hydrogen chloride. The "heat carrier" whose vapours are used to heat the liquors preferably has a boiling-point at least 100 DEG C. above that of the liquors. Suitable substances include hydrocarbon fractions, particularly those stripped of aromatic hydrocarbons and substituted hydrocarbons such as trichlorobenzene. Silicones may also be used. In continuous operation the organic layer may be removed from the distillate and the residue and recycled.
GB29658/58A 1957-10-07 1958-09-16 Improvements in or relating to methods for the thermal treatment of aqueous liquors Expired GB830738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL830738X 1957-10-07

Publications (1)

Publication Number Publication Date
GB830738A true GB830738A (en) 1960-03-16

Family

ID=11057951

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29658/58A Expired GB830738A (en) 1957-10-07 1958-09-16 Improvements in or relating to methods for the thermal treatment of aqueous liquors

Country Status (2)

Country Link
BE (1) BE571619A (en)
GB (1) GB830738A (en)

Also Published As

Publication number Publication date
BE571619A (en)

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