ES2172914T3 - Procedimiento de tratamiento de soluciones acuosas que comprenden acidos y compuestos nitrados. - Google Patents
Procedimiento de tratamiento de soluciones acuosas que comprenden acidos y compuestos nitrados.Info
- Publication number
- ES2172914T3 ES2172914T3 ES98942728T ES98942728T ES2172914T3 ES 2172914 T3 ES2172914 T3 ES 2172914T3 ES 98942728 T ES98942728 T ES 98942728T ES 98942728 T ES98942728 T ES 98942728T ES 2172914 T3 ES2172914 T3 ES 2172914T3
- Authority
- ES
- Spain
- Prior art keywords
- indicated
- recycled
- washing
- aqueous phase
- compounds
- 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 - Lifetime
Links
Classifications
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/903—Nitrogenous
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/908—Organic
- Y10S210/909—Aromatic compound, e.g. pcb, phenol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procedimiento de tratamiento de una solución acuosa procedente del lavado de compuestos aromáticos mononitrados o dinitrados obtenidos por la reacción de un compuesto aromático correspondiente, con un ácido nitrante que comprende al menos ácido nítrico, habiendo sido los indicados compuestos aromáticos mononitrados o dinitrados, previamente al lavado mencionado, separados de la fase acuosa ácida; siendo el indicado lavado realizado con agua que puede también comprender trazas de ácido nitrante, caracterizado porque se realizan las etapas siguientes: (a) se pone en contacto la indicada solución acuosa con el compuesto aromático anteriormente citado, y se obtiene una fase acuosa y una fase orgánica. (b) se recicla la indicada fase orgánica en el procedimiento de nitración, o en la extracción de los ácidos residuales de mononitración. (c) se destila la indicada fase acuosa. (d) se recicla la solución ácida concentrada así obtenida, en el procedimiento de nitración, (e) se recicla o se elimina el agua recuperada después de la destilación.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9710346A FR2767319B1 (fr) | 1997-08-13 | 1997-08-13 | Procede de traitement de solutions aqueuses comprenant des acides et des composes nitres |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2172914T3 true ES2172914T3 (es) | 2002-10-01 |
Family
ID=9510284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98942728T Expired - Lifetime ES2172914T3 (es) | 1997-08-13 | 1998-08-11 | Procedimiento de tratamiento de soluciones acuosas que comprenden acidos y compuestos nitrados. |
Country Status (8)
Country | Link |
---|---|
US (1) | US6254789B1 (es) |
EP (1) | EP1003710B1 (es) |
DE (1) | DE69803854T2 (es) |
DK (1) | DK1003710T3 (es) |
ES (1) | ES2172914T3 (es) |
FR (1) | FR2767319B1 (es) |
PT (1) | PT1003710E (es) |
WO (1) | WO1999008995A1 (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6723236B2 (en) | 2002-03-19 | 2004-04-20 | Waters Investments Limited | Device for solid phase extraction and method for purifying samples prior to analysis |
US7000409B2 (en) * | 2003-05-23 | 2006-02-21 | Marit Jagtoyen Mazzetti | Use of flow through capacitor in the recovery and purification of water from exhaust gases of internal combustion engines |
DE10329304A1 (de) * | 2003-06-30 | 2005-02-03 | Bayer Materialscience Ag | Verfahren zur Aufarbeitung des bei der Herstellung von Dinitrotoluol anfallenden Abwassers |
DE102004017628A1 (de) * | 2004-04-10 | 2005-11-03 | Bayer Materialscience Ag | Verfahren zur Aufarbeitung von aromatische Nitroverbindungen enthaltenden Abwässern |
US7736529B2 (en) * | 2007-10-12 | 2010-06-15 | Honeywell International Inc | Azeotrope-like compositions containing sulfur hexafluoride and uses thereof |
US20120205308A1 (en) * | 2010-08-12 | 2012-08-16 | Basf Se | Process for purifying wastewaters from the workup of crude aromatic nitro compounds |
US9249083B2 (en) | 2012-04-25 | 2016-02-02 | Basf Se | Process for scrubbing dinitrotoluene |
ES2570530T3 (es) | 2012-04-25 | 2016-05-18 | Basf Se | Método para lavar dinitrotolueno |
CN108440300A (zh) * | 2018-05-15 | 2018-08-24 | 福建省东南电化股份有限公司 | 一种硝化废酸浓缩过程中防止堵塞的方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2773911A (en) * | 1953-12-11 | 1956-12-11 | Du Pont | Continuous manufacture of nitrobenzene |
EP0047331A1 (en) * | 1980-09-06 | 1982-03-17 | American Cyanamid Company | Recovery of nitrated aromatic compounds from nitration wash liquors |
FR2714666B1 (fr) * | 1993-12-31 | 1996-03-01 | Rhone Poulenc Chimie | Procédé d'élimination d'effluents aqueux comprenant notamment des composés hydroxynitroaromatiques. |
DE4428460A1 (de) * | 1994-08-11 | 1996-02-15 | Bayer Ag | Verfahren zur Herstellung von Nitroaromaten |
-
1997
- 1997-08-13 FR FR9710346A patent/FR2767319B1/fr not_active Expired - Lifetime
-
1998
- 1998-08-11 DE DE69803854T patent/DE69803854T2/de not_active Expired - Lifetime
- 1998-08-11 EP EP98942728A patent/EP1003710B1/fr not_active Expired - Lifetime
- 1998-08-11 US US09/485,498 patent/US6254789B1/en not_active Expired - Lifetime
- 1998-08-11 ES ES98942728T patent/ES2172914T3/es not_active Expired - Lifetime
- 1998-08-11 DK DK98942728T patent/DK1003710T3/da active
- 1998-08-11 PT PT98942728T patent/PT1003710E/pt unknown
- 1998-08-11 WO PCT/FR1998/001793 patent/WO1999008995A1/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE69803854D1 (de) | 2002-03-21 |
FR2767319A1 (fr) | 1999-02-19 |
US6254789B1 (en) | 2001-07-03 |
WO1999008995A1 (fr) | 1999-02-25 |
EP1003710B1 (fr) | 2002-02-13 |
DK1003710T3 (da) | 2002-03-25 |
DE69803854T2 (de) | 2002-09-26 |
FR2767319B1 (fr) | 1999-10-29 |
PT1003710E (pt) | 2002-07-31 |
EP1003710A1 (fr) | 2000-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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