FR2084488A5 - Recovering boric acid from aqs soln - Google Patents

Recovering boric acid from aqs soln

Info

Publication number
FR2084488A5
FR2084488A5 FR7108499A FR7108499A FR2084488A5 FR 2084488 A5 FR2084488 A5 FR 2084488A5 FR 7108499 A FR7108499 A FR 7108499A FR 7108499 A FR7108499 A FR 7108499A FR 2084488 A5 FR2084488 A5 FR 2084488A5
Authority
FR
France
Prior art keywords
boric acid
contg
vapour
solns
moderator
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
FR7108499A
Other languages
French (fr)
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of FR2084488A5 publication Critical patent/FR2084488A5/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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
    • C01B35/10—Compounds containing boron and oxygen
    • C01B35/1045—Oxyacids
    • C01B35/1054—Orthoboric acid
    • C01B35/109—Purification; Separation; Concentration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

Boric acid is recovered from an aqs. soln by boiling to produce a vapour/liquid mixture, distilling, separating the entrained liquid from the vapour, and condensing the vapour to give a condensate contg pref. is not >10 ppm boron specif. the boric acid, contg is not >3000 ppm boron, is piped to an evaporator. Water/boric acid mist rises in a tower and passes through multiple alternate layers of plates and wadding, through uppermost wadding into a condenser. At the level of the lowest plate the soln. contg about 12% boric acid leaves the tower by exit-pipe. Used in atomic-reactor moderator systems, the concentration of moderator boric acid solns being continually adjusted by mixing water contg less than 10 ppm boron with solns contg. 12% boric acid, these solns being obtained from the effluent moderator from the reactor.
FR7108499A 1970-03-11 1971-03-11 Recovering boric acid from aqs soln Expired FR2084488A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1855070A 1970-03-11 1970-03-11

Publications (1)

Publication Number Publication Date
FR2084488A5 true FR2084488A5 (en) 1971-12-17

Family

ID=21788513

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7108499A Expired FR2084488A5 (en) 1970-03-11 1971-03-11 Recovering boric acid from aqs soln

Country Status (6)

Country Link
AT (1) AT326783B (en)
BE (1) BE763920A (en)
CH (1) CH546999A (en)
DE (1) DE2111347A1 (en)
ES (1) ES388739A1 (en)
FR (1) FR2084488A5 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5894844A (en) * 1996-11-07 1999-04-20 Rohrberg; Roderick G. Three-dimensional floatation-enhanced body examination system

Also Published As

Publication number Publication date
BE763920A (en) 1971-09-08
ATA210071A (en) 1975-03-15
DE2111347A1 (en) 1971-09-30
CH546999A (en) 1974-03-15
ES388739A1 (en) 1973-05-16
AT326783B (en) 1975-12-29

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Legal Events

Date Code Title Description
ST Notification of lapse