FR2267980A1 - Purifying sulphuric acid contg. org. sulphonic acids - as contaminants by concn., reaction with nitric acid and distn. - Google Patents

Purifying sulphuric acid contg. org. sulphonic acids - as contaminants by concn., reaction with nitric acid and distn.

Info

Publication number
FR2267980A1
FR2267980A1 FR7511513A FR7511513A FR2267980A1 FR 2267980 A1 FR2267980 A1 FR 2267980A1 FR 7511513 A FR7511513 A FR 7511513A FR 7511513 A FR7511513 A FR 7511513A FR 2267980 A1 FR2267980 A1 FR 2267980A1
Authority
FR
France
Prior art keywords
org
crude acid
hno3
h2so4
contg
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.)
Granted
Application number
FR7511513A
Other languages
English (en)
French (fr)
Other versions
FR2267980B1 (enExample
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.)
Imperial Chemical Industries Ltd
Original Assignee
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of FR2267980A1 publication Critical patent/FR2267980A1/fr
Application granted granted Critical
Publication of FR2267980B1 publication Critical patent/FR2267980B1/fr
Granted legal-status Critical Current

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
    • C01B17/92—Recovery from acid tar or the like, e.g. alkylation acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR7511513A 1974-04-16 1975-04-14 Purifying sulphuric acid contg. org. sulphonic acids - as contaminants by concn., reaction with nitric acid and distn. Granted FR2267980A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1644574 1974-04-16

Publications (2)

Publication Number Publication Date
FR2267980A1 true FR2267980A1 (en) 1975-11-14
FR2267980B1 FR2267980B1 (enExample) 1977-04-15

Family

ID=10077453

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7511513A Granted FR2267980A1 (en) 1974-04-16 1975-04-14 Purifying sulphuric acid contg. org. sulphonic acids - as contaminants by concn., reaction with nitric acid and distn.

Country Status (3)

Country Link
JP (1) JPS50145392A (enExample)
DE (1) DE2516173A1 (enExample)
FR (1) FR2267980A1 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348149A1 (fr) * 1976-04-15 1977-11-10 Hoechst Ag Procede de regeneration d'acide sulfurique residuaire
FR2373488A1 (fr) * 1976-12-11 1978-07-07 Hoechst Ag Procede de regeneration de l'acide sulfurique use
FR2493823A1 (fr) * 1980-11-13 1982-05-14 Ugine Kuhlmann Purification des acides sulfuriques residuaires provenant de la synthese des alcools

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731638C2 (de) * 1977-07-13 1985-08-14 Bayer Ag, 5090 Leverkusen Verfahren zur Reinigung organisch belasteter Abfallschwefelsäuren
EP0378873B1 (en) * 1988-12-16 1993-02-03 ENICHEM SYNTHESIS S.p.A. Regeneration of exhausted sulfuric acid by means of hydrogen peroxide
DE19600810A1 (de) * 1996-01-11 1997-07-17 Wacker Chemie Gmbh Verfahren zum Reinigen von Schwefelsäure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348149A1 (fr) * 1976-04-15 1977-11-10 Hoechst Ag Procede de regeneration d'acide sulfurique residuaire
FR2373488A1 (fr) * 1976-12-11 1978-07-07 Hoechst Ag Procede de regeneration de l'acide sulfurique use
FR2493823A1 (fr) * 1980-11-13 1982-05-14 Ugine Kuhlmann Purification des acides sulfuriques residuaires provenant de la synthese des alcools
EP0052548A1 (fr) * 1980-11-13 1982-05-26 Elf Atochem S.A. Purification des acides sulfuriques résiduaires provenant de la synthèse des alcools

Also Published As

Publication number Publication date
FR2267980B1 (enExample) 1977-04-15
JPS50145392A (enExample) 1975-11-21
DE2516173A1 (de) 1975-11-06

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Legal Events

Date Code Title Description
ST Notification of lapse