IL60577A - Process and device for purifying waste sulfuric acid containing fluoride - Google Patents

Process and device for purifying waste sulfuric acid containing fluoride

Info

Publication number
IL60577A
IL60577A IL60577A IL6057780A IL60577A IL 60577 A IL60577 A IL 60577A IL 60577 A IL60577 A IL 60577A IL 6057780 A IL6057780 A IL 6057780A IL 60577 A IL60577 A IL 60577A
Authority
IL
Israel
Prior art keywords
sulfuric acid
acid containing
purifying waste
waste sulfuric
containing fluoride
Prior art date
Application number
IL60577A
Other languages
English (en)
Other versions
IL60577A0 (en
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of IL60577A0 publication Critical patent/IL60577A0/xx
Publication of IL60577A publication Critical patent/IL60577A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C01B17/905—Removal of organic impurities
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/88—Concentration of sulfuric acid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
IL60577A 1979-07-14 1980-07-14 Process and device for purifying waste sulfuric acid containing fluoride IL60577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2928598A DE2928598C2 (de) 1979-07-14 1979-07-14 Verfahren zur Reinigung fluoridhaltiger Abfallschwefelsäure

Publications (2)

Publication Number Publication Date
IL60577A0 IL60577A0 (en) 1980-09-16
IL60577A true IL60577A (en) 1983-09-30

Family

ID=6075791

Family Applications (1)

Application Number Title Priority Date Filing Date
IL60577A IL60577A (en) 1979-07-14 1980-07-14 Process and device for purifying waste sulfuric acid containing fluoride

Country Status (5)

Country Link
US (1) US4329155A (xx)
EP (1) EP0025824B1 (xx)
BR (1) BR8004331A (xx)
DE (2) DE2928598C2 (xx)
IL (1) IL60577A (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE431636B (sv) * 1981-03-16 1984-02-20 Bofors Ab Forfarande for koncentrering av mineralsyror, foretredesvis svavelsyra
DE3629766A1 (de) * 1986-09-02 1988-03-17 Bayer Ag Verfahren zur reinigung und wiederaufheizung von abgasen
US4828660A (en) * 1986-10-06 1989-05-09 Athens Corporation Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids
US4855023A (en) * 1986-10-06 1989-08-08 Athens, Inc. Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids used in semiconductor wafer cleaning
US5061348A (en) * 1988-08-12 1991-10-29 Alameda Instruments Sulfuric acid reprocessor with continuous purge of second distillation vessel
US4936955A (en) * 1988-08-12 1990-06-26 Alameda Instruments, Inc. Hydrofluoric acid reprocessing for semiconductor standards
US4980032A (en) * 1988-08-12 1990-12-25 Alameda Instruments, Inc. Distillation method and apparatus for reprocessing sulfuric acid
US5030436A (en) * 1989-05-03 1991-07-09 Ethyl Corporation Spent acid purification process
US5246549A (en) * 1989-05-15 1993-09-21 John Heil Vacuum distillation system utilizing loose polymer lining
CN111036038A (zh) * 2019-12-31 2020-04-21 洛阳丰瑞氟业有限公司 一种硫铁矿制硫酸烟气除氟设备及工艺方法
CN113856230A (zh) * 2021-10-28 2021-12-31 深圳市真味生物科技有限公司 一种便于清理的香精香料生产用蒸馏釜

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE299774C (xx) *
GB762985A (en) * 1954-02-18 1956-12-05 Loughborough Glass Company Ltd Improvements in or relating to the construction of fractionating or like columns
GB788075A (en) * 1955-04-29 1957-12-23 Monsanto Chemicals Fractionating trays
US2970042A (en) * 1956-03-01 1961-01-31 Shell Oil Co Vessel with replaceable pliable lining
FR1225411A (fr) * 1958-10-24 1960-06-30 Du Pont Canada Plateaux à auto-étanchéité pour colonnes de distillation
DE1262225B (de) * 1961-12-05 1968-03-07 Hoechst Ag Glocke mit Kamin fuer Bodenkolonnen
DE1233368B (de) * 1962-08-13 1967-02-02 Heraeus Schott Quarzschmelze Verfahren zur kontinuierlichen Destillation von Schwefelsaeure in Apparaturen aus keramischen Werkstoffen
US3414246A (en) * 1966-12-19 1968-12-03 Dore Co John L Tower tray
US3677701A (en) * 1970-06-01 1972-07-18 Clinton A Hollingsworth Sulfuric acid defluorination
GB1333877A (en) * 1971-02-12 1973-10-17 Hughes Co Ltd F A Gas scrubber
US3749648A (en) * 1971-05-19 1973-07-31 Du Pont Recovery of spent sulfuric acid from chlorinated and nitrated benzoic acid derivatives
DE2311085A1 (de) * 1973-03-06 1974-09-19 Bayer Ag Trennung von fluessigen aggressiven stoffgemischen
DE2330281A1 (de) * 1973-06-14 1975-01-09 Hoechst Ag Verfahren zur regenerierung von schwefelsaeure
DE2360706C3 (de) * 1973-12-06 1980-10-16 Hoechst Ag, 6000 Frankfurt Verfahren zur Regeneration von Schwefelsäure
US4032622A (en) * 1974-03-14 1977-06-28 Hoechst Aktiengesellschaft Method of concentrating sulfuric acid using a boiler of improved cast iron
FR2265675A1 (en) * 1974-03-29 1975-10-24 Lilly Co Eli Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds
US3976759A (en) * 1974-12-30 1976-08-24 Texaco Inc. Process for removal of fluoride compounds from spent alkylation catalyst
US4033899A (en) * 1974-12-30 1977-07-05 Texaco Inc. Alkylation fluosulfonic-sulfuric acid catalyst recovery process with silica-alumina removal of fluoride compounds
US4166536A (en) * 1977-03-16 1979-09-04 The Carborundum Company Corrosive chemical containment system
US4233281A (en) * 1978-06-09 1980-11-11 Occidental Chemical Company Recovery of hydrogen fluoride from metallic fluoride salts

Also Published As

Publication number Publication date
DE2928598A1 (de) 1981-01-15
DE3069153D1 (en) 1984-10-18
BR8004331A (pt) 1981-01-27
EP0025824B1 (de) 1984-09-12
EP0025824A2 (de) 1981-04-01
IL60577A0 (en) 1980-09-16
DE2928598C2 (de) 1984-01-19
EP0025824A3 (en) 1981-07-22
US4329155A (en) 1982-05-11

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Legal Events

Date Code Title Description
RH Patent void