FR2265675A1 - Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds - Google Patents

Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds

Info

Publication number
FR2265675A1
FR2265675A1 FR7411527A FR7411527A FR2265675A1 FR 2265675 A1 FR2265675 A1 FR 2265675A1 FR 7411527 A FR7411527 A FR 7411527A FR 7411527 A FR7411527 A FR 7411527A FR 2265675 A1 FR2265675 A1 FR 2265675A1
Authority
FR
France
Prior art keywords
organic
contg
inorganic
nitrogen oxides
sulphuric acid
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
FR7411527A
Other languages
French (fr)
Other versions
FR2265675B1 (en
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.)
Eli Lilly and Co
Original Assignee
Eli Lilly and Co
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 Eli Lilly and Co filed Critical Eli Lilly and Co
Priority to FR7411527A priority Critical patent/FR2265675A1/en
Publication of FR2265675A1 publication Critical patent/FR2265675A1/en
Application granted granted Critical
Publication of FR2265675B1 publication Critical patent/FR2265675B1/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
    • C01B17/94—Recovery from nitration acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

To the spent acid is added a cpd. e.g. ammonium sulphate, which reacts with HNO2 to liberate N2, these being sufficient of this cpd. to react with all the N oxides present, and a source of Si, e.g. AlMg silicate, in quantity sufficient to react with all the fluorides, and the resultant mixture is then heated to 150-275 (200-220) degrees C. The process has only one stage, it is rapid, avoiding problems of storage, handling and corrosion, and the appts. is relatively cheap. Dilution of the acid is obviated.
FR7411527A 1974-03-29 1974-03-29 Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds Granted FR2265675A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7411527A FR2265675A1 (en) 1974-03-29 1974-03-29 Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7411527A FR2265675A1 (en) 1974-03-29 1974-03-29 Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds

Publications (2)

Publication Number Publication Date
FR2265675A1 true FR2265675A1 (en) 1975-10-24
FR2265675B1 FR2265675B1 (en) 1979-10-19

Family

ID=9137146

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411527A Granted FR2265675A1 (en) 1974-03-29 1974-03-29 Purifying spent nitration sulphuric acid - contg. nitrogen oxides, inorganic and organic fluorides, and organic cpds

Country Status (1)

Country Link
FR (1) FR2265675A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000935A1 (en) * 1977-08-30 1979-03-07 Bayer Ag Process for the purification of sulfuric acids
EP0025824A2 (en) * 1979-07-14 1981-04-01 Hoechst Aktiengesellschaft Process and apparatus for the purification of waste sulfuric acid that contains fluorine
DE3843092A1 (en) * 1987-12-23 1989-07-13 Poudres & Explosifs Ste Nale METHOD AND DEVICE FOR REMOVING NITROGLYCERINE IN RESIDUES FROM NITRATION

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000935A1 (en) * 1977-08-30 1979-03-07 Bayer Ag Process for the purification of sulfuric acids
EP0025824A2 (en) * 1979-07-14 1981-04-01 Hoechst Aktiengesellschaft Process and apparatus for the purification of waste sulfuric acid that contains fluorine
EP0025824A3 (en) * 1979-07-14 1981-07-22 Hoechst Aktiengesellschaft Process and apparatus for the purification of waste sulfuric acid that contains fluorine, and a bubble cup for the bubble plates of distallation column
DE3843092A1 (en) * 1987-12-23 1989-07-13 Poudres & Explosifs Ste Nale METHOD AND DEVICE FOR REMOVING NITROGLYCERINE IN RESIDUES FROM NITRATION
AU623871B2 (en) * 1987-12-23 1992-05-28 Snpe Materiaux Energetiques Method and equipment for decomposition of nitroglycerine in the residual nitration acids

Also Published As

Publication number Publication date
FR2265675B1 (en) 1979-10-19

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Legal Events

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