SE7714900L - WAY TO PROCESS RESIDUES - Google Patents

WAY TO PROCESS RESIDUES

Info

Publication number
SE7714900L
SE7714900L SE7714900A SE7714900A SE7714900L SE 7714900 L SE7714900 L SE 7714900L SE 7714900 A SE7714900 A SE 7714900A SE 7714900 A SE7714900 A SE 7714900A SE 7714900 L SE7714900 L SE 7714900L
Authority
SE
Sweden
Prior art keywords
acid
recovered
acidic mixture
carboxylic acid
nitrated derivatives
Prior art date
Application number
SE7714900A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE426475B (en
Inventor
L Molard
J M Lambert
T J Maes
Original Assignee
Poudres & Explosifs Ste Nale
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 Poudres & Explosifs Ste Nale filed Critical Poudres & Explosifs Ste Nale
Publication of SE7714900L publication Critical patent/SE7714900L/en
Publication of SE426475B publication Critical patent/SE426475B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/38—Nitric acid
    • C01B21/46—Purification; Separation ; Stabilisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In an evaporation device (1), where a pressure of between 50 and 760 mm Hg and a temperature of 50 to 120 DEG C prevails, a residual acidic mixture arising from the manufacture of nitrated derivatives of phenols and a pretreated and recycled acidic mixture are processed. From the vapours emitted and from the nonevaporated liquors there is recovered, in a rectification device (4) and a crystallisation device (2) respectively, and purified and concentrated nitric acid, a carboxylic acid, picric acid and oxalic acid, all these products being in a marketable form. This process finds its application more particularly in making profitable the treatment of the effluents from plants for the production of nitrated derivatives of alkylphenols, especially of 4,6-dinitro-o-t-butylphenol, the carboxylic acid formed and recovered then being pivalic acid. <IMAGE>
SE7714900A 1976-12-30 1977-12-29 SET TO CONTINUOUSLY TREAT RESTAURAL NITRIC ACIDS AND DEVICE IMPLEMENTATION SE426475B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7639523A FR2376069A1 (en) 1976-12-30 1976-12-30 PROCESS FOR THE CONTINUOUS TREATMENT OF NITRIC ACIDS FROM THE MANUFACTURE OF NITER DERIVATIVES OF ALKYLPHENOLS

Publications (2)

Publication Number Publication Date
SE7714900L true SE7714900L (en) 1978-07-01
SE426475B SE426475B (en) 1983-01-24

Family

ID=9181707

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714900A SE426475B (en) 1976-12-30 1977-12-29 SET TO CONTINUOUSLY TREAT RESTAURAL NITRIC ACIDS AND DEVICE IMPLEMENTATION

Country Status (5)

Country Link
CH (1) CH625489A5 (en)
DE (1) DE2757073A1 (en)
FR (1) FR2376069A1 (en)
GB (1) GB1544317A (en)
SE (1) SE426475B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT389823B (en) * 1988-05-13 1990-02-12 Chemie Holding Ag METHOD FOR SELECTIVE REMOVAL AND DESTRUCTION OF CYAN HYDROGEN FROM A MIXTURE WITH NITROSE GASES
CN103449388B (en) * 2013-09-10 2016-03-30 安徽淮化股份有限公司 A kind of dust technology recovery method and specific equipment thereof
CN103879977B (en) * 2014-04-03 2015-12-09 苏州晶瑞化学股份有限公司 A kind of continuous production method of high pure nitric acid and production equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217154B2 (en) * 1974-12-24 1977-05-13

Also Published As

Publication number Publication date
DE2757073A1 (en) 1978-07-13
CH625489A5 (en) 1981-09-30
DE2757073C2 (en) 1988-01-07
GB1544317A (en) 1979-04-19
FR2376069B1 (en) 1979-04-20
SE426475B (en) 1983-01-24
FR2376069A1 (en) 1978-07-28

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