GB1544317A - Process for the continuous treatment of used nitric acid - Google Patents

Process for the continuous treatment of used nitric acid

Info

Publication number
GB1544317A
GB1544317A GB5303277A GB5303277A GB1544317A GB 1544317 A GB1544317 A GB 1544317A GB 5303277 A GB5303277 A GB 5303277A GB 5303277 A GB5303277 A GB 5303277A GB 1544317 A GB1544317 A GB 1544317A
Authority
GB
United Kingdom
Prior art keywords
acid
nitric acid
recovered
continuous treatment
acidic mixture
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
GB5303277A
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Publication of GB1544317A publication Critical patent/GB1544317A/en
Expired 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
    • 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>
GB5303277A 1976-12-30 1977-12-20 Process for the continuous treatment of used nitric acid Expired GB1544317A (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 (1)

Publication Number Publication Date
GB1544317A true GB1544317A (en) 1979-04-19

Family

ID=9181707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5303277A Expired GB1544317A (en) 1976-12-30 1977-12-20 Process for the continuous treatment of used nitric acid

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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910003A (en) * 1988-05-13 1990-03-20 Chemie Linz Gesellschaft M.B.H. Process for selective removal and destruction of hydrogen cyanide from nitrous-containing gases
CN103449388A (en) * 2013-09-10 2013-12-18 安徽淮化股份有限公司 Recycling method of dilute nitric acid and special equipment for method
CN103879977A (en) * 2014-04-03 2014-06-25 苏州晶瑞化学有限公司 Continuous production method and device for high-purity nitric acid

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910003A (en) * 1988-05-13 1990-03-20 Chemie Linz Gesellschaft M.B.H. Process for selective removal and destruction of hydrogen cyanide from nitrous-containing gases
CN103449388A (en) * 2013-09-10 2013-12-18 安徽淮化股份有限公司 Recycling method of dilute nitric acid and special equipment for method
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
CN103879977A (en) * 2014-04-03 2014-06-25 苏州晶瑞化学有限公司 Continuous production method and device for high-purity nitric acid
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

Also Published As

Publication number Publication date
DE2757073A1 (en) 1978-07-13
CH625489A5 (en) 1981-09-30
DE2757073C2 (en) 1988-01-07
FR2376069B1 (en) 1979-04-20
SE7714900L (en) 1978-07-01
SE426475B (en) 1983-01-24
FR2376069A1 (en) 1978-07-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921220