BRPI0501182A - Processo para o processamento de águas residuais contendo nitrocompostos aromáticos - Google Patents

Processo para o processamento de águas residuais contendo nitrocompostos aromáticos

Info

Publication number
BRPI0501182A
BRPI0501182A BR0501182-5A BRPI0501182A BRPI0501182A BR PI0501182 A BRPI0501182 A BR PI0501182A BR PI0501182 A BRPI0501182 A BR PI0501182A BR PI0501182 A BRPI0501182 A BR PI0501182A
Authority
BR
Brazil
Prior art keywords
aromatic
wastewater
nitrohydroxy
mono
tdz
Prior art date
Application number
BR0501182-5A
Other languages
English (en)
Inventor
Thomas Knauf
Franz-Ulrich Von Gehlen
Wolfgang Dohmen
Joerg Schmiedler
Original Assignee
Bayer Materialscience Ag
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 Bayer Materialscience Ag filed Critical Bayer Materialscience Ag
Publication of BRPI0501182A publication Critical patent/BRPI0501182A/pt
Publication of BRPI0501182B1 publication Critical patent/BRPI0501182B1/pt

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/08—Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F21V14/025—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources in portable lighting devices
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C02F2101/322—Volatile compounds, e.g. benzene
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/06—Pressure conditions
    • C02F2301/066—Overpressure, high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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
    • 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
    • Y10S210/918—Miscellaneous specific techniques
    • Y10S210/919—Miscellaneous specific techniques using combined systems by merging parallel diverse waste systems

Landscapes

  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Multimedia (AREA)
  • Physical Water Treatments (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Removal Of Specific Substances (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

"PROCESSO PARA O PROCESSAMENTO DE áGUAS RESIDUAIS CONTENDO NITROCOMPOSTOS AROMáTICOS". A presente invenção refere-se a um processo para o processamento de águas residuais alcalinas, que resultam da lavagem de nitrobenzeno bruto por meio de decomposição térmica sob pressão (TDZ). Essas águas residuais alcalinas contêm usualmente além de água ainda quantidades residuais de benzeno e nitrobenzeno bem como de nitrohidróxi aromáticos. Por exemplo, são mencionados os nitrohidróxi aromáticos a seguir, que também podem estar presentes sob forma de seus sais hidrossolúveis: mono-, di- e trinitrofenóis, mono-, di- e trinitrocresóis, mono-, di- e trinitroresorcinas, mono-, di e trixilenóis. Como formador de sal são apropriados todos os metais, que são capazes de formar sais hidrossolúveis com os nitrohidróxi aromáticos. São preferidos os metais alcalinos mencionados, por exemplo, lítio, sódio, potássio e rubídío. O processo básico de TDZ para tratamento de águas residuais contendo nitrocompostos aromáticos é descrito nas patentes a seguir. Na patente EP O 005 203 A2 é descrito um processo para o processamento de águas residuais contendo nitrohidróxi, sendo que as águas residuais são tratadas sob exclusão de ar e oxigênio a uma pressão de 50 - 250 bar e com uma temperatura de 150 - 500<198>C. Na patente EP O 503 387 A1 foi descrito um processo caracterizado pelo fato de que a água residual dita alcalina é processada por adição de ácido nítrico e subseq³ente tratamento em faixas de temperatura de 180 350<198>C e uma faixa de pressão de 40 - 250 bar. Ambos os processos apresentam, no entanto, consideráveis desvantagens. A patente EP O 005 203 A2 não descreve a eliminação de hidrocarbonetos orgânicos como benzeno ou nitrobenzeno, que precipitam em um processo de nitrificação adiabático correspondente ao estado da técnica. A purificação da água residual de acordo com o ensinamento da patente EP O 005 203 A2 é, pois, insuficiente ou o uso de lixívia-mãe na TDZ é muito
BRPI0501182-5A 2004-04-10 2005-04-07 "processo para processamento de águas residuais alcalinas resultantes da lavagem de nitrobenzeno bruto". BRPI0501182B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004017628A DE102004017628A1 (de) 2004-04-10 2004-04-10 Verfahren zur Aufarbeitung von aromatische Nitroverbindungen enthaltenden Abwässern

Publications (2)

Publication Number Publication Date
BRPI0501182A true BRPI0501182A (pt) 2005-11-16
BRPI0501182B1 BRPI0501182B1 (pt) 2014-12-23

Family

ID=34934595

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0501182-5A BRPI0501182B1 (pt) 2004-04-10 2005-04-07 "processo para processamento de águas residuais alcalinas resultantes da lavagem de nitrobenzeno bruto".

Country Status (12)

Country Link
US (1) US7344650B2 (pt)
EP (1) EP1593654B1 (pt)
JP (1) JP4898134B2 (pt)
KR (1) KR101206597B1 (pt)
CN (1) CN100526235C (pt)
BR (1) BRPI0501182B1 (pt)
DE (1) DE102004017628A1 (pt)
ES (1) ES2411661T3 (pt)
PL (1) PL1593654T3 (pt)
PT (1) PT1593654E (pt)
SG (1) SG116599A1 (pt)
TW (1) TW200613225A (pt)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007101844A1 (de) * 2006-03-07 2007-09-13 Basf Se Verfahren zur destillativen abtrennung von dinitrotoluol aus einem prozessabwasser aus der herstellung von dinitrotoluol durch nitrierung von toluol mit nitriersäure
WO2009027416A1 (de) * 2007-08-30 2009-03-05 Basf Se Verfahren zur aufarbeitung von abwässern aus der nitrierung
DE102009007761A1 (de) * 2009-02-06 2010-08-12 Bayer Materialscience Ag Verfahren zur Aufarbeitung von Abwässern
CN101597116B (zh) * 2009-04-27 2011-08-24 江苏隆昌化工有限公司 一种2,5-二氯硝基苯废水处理工艺
US8801932B2 (en) 2009-05-15 2014-08-12 Noram International Limited Sub-critical partial oxidation for treatment of nitration wastes
RU2508287C2 (ru) * 2009-06-17 2014-02-27 Хантсмэн Интернэшнл Ллс Химическая установка
CN102471092B (zh) * 2009-08-18 2013-11-06 诺拉姆国际公司 用于硝基芳族化合物的洗涤系统
KR101150159B1 (ko) 2009-12-01 2012-05-25 휴켐스주식회사 니트로 화합물의 제조 과정에서 발생하는 폐수의 처리방법
DE102010038519A1 (de) * 2010-07-28 2012-02-02 Bayer Materialscience Ag Verfahren zur Herstellung von Nitrobenzol durch adiabate Nitrierung
EP2418176A1 (de) 2010-08-12 2012-02-15 Basf Se Verfahren zur Aufreinigung von Abwässern aus der Aufarbeitung vom rohem Mononitrobenzol
US20120205308A1 (en) * 2010-08-12 2012-08-16 Basf Se Process for purifying wastewaters from the workup of crude aromatic nitro compounds
JP5818287B2 (ja) 2011-05-19 2015-11-18 ヨーゼフ マイスナー ゲーエムベーハー ウント コー カーゲー ニトロ化生成物を精製する方法及び装置
WO2013020798A1 (de) 2011-08-09 2013-02-14 Basf Se Verfahren zur aufreinigung von abwässern aus der aufarbeitung von rohen aromatischen nitroverbindungen
US8697921B2 (en) 2011-08-09 2014-04-15 Basf Se Process for purifying wastewaters from the workup of crude aromatic nitro compounds
WO2013020961A1 (de) 2011-08-09 2013-02-14 Basf Se Verfahren zur aufreinigung von abwässern aus der aufarbeitung von rohen aromatischen nitroverbindungen
DE102011081898A1 (de) 2011-08-31 2013-02-28 Bayer Materialscience Aktiengesellschaft Verfahren zur kontinuierlichen Herstellung von Nitrobenzol
KR102066764B1 (ko) 2012-07-27 2020-01-15 코베스트로 도이칠란드 아게 단열 니트로화에 의한 니트로벤젠의 제조방법
EP2877442B1 (de) 2012-07-27 2016-11-16 Covestro Deutschland AG Verfahren zur herstellung von nitrobenzol durch adiabate nitrierung
KR102067307B1 (ko) 2012-07-27 2020-01-16 코베스트로 도이칠란드 아게 단열 니트로화에 의한 니트로벤젠의 제조방법
US9227909B2 (en) 2012-10-10 2016-01-05 Covestro Deutschland Ag Method for the continuous production of nitrobenzene
CN103214396B (zh) * 2013-04-10 2015-01-21 湖北工业大学 3-氰基苯甲酸的生产方法
PT2986562T (pt) * 2013-04-18 2017-04-24 Covestro Deutschland Ag Método para o processamento de água residual a partir da produção de nitro-benzeno
PT2986563T (pt) * 2013-04-18 2017-04-06 Covestro Deutschland Ag Processo para tratamento de efluentes da produção de nitrobenzeno
EP2991966B1 (de) 2013-04-29 2017-07-12 Covestro Deutschland AG Verfahren zur herstellung von nitrobenzol durch adiabate nitrierung
US10023524B2 (en) 2014-06-24 2018-07-17 Covestro Deutschland Ag Process for producing nitrobenzene
PT3592727T (pt) 2017-03-07 2024-06-26 Covestro Deutschland Ag Método para fabrico de nitrobenzeno
WO2020011817A1 (de) 2018-07-12 2020-01-16 Covestro Deutschland Ag Verfahren zur herstellung von nitrobenzol durch adiabatisch betriebene nitrierung von benzol
WO2020212333A1 (de) 2019-04-17 2020-10-22 Covestro Deutschland Ag Verfahren zur kontinuierlichen herstellung von nitrobenzol
US20220162151A1 (en) 2019-04-17 2022-05-26 Covestro Deutschland Ag Process and device for producing nitrobenzene
CN115594357B (zh) * 2022-11-08 2024-04-19 煤炭科学技术研究院有限公司 一种酰化废水分级处理方法
CN119819213A (zh) * 2023-10-13 2025-04-15 中国石油化工股份有限公司 一种硝基苯废水减量化装置及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844914A (en) * 1973-09-04 1974-10-29 Dow Chemical Co Photolytic purification of aqueous solutions containing nitrophenol compounds
DE2818680A1 (de) 1978-04-27 1979-10-31 Bayer Ag Verfahren zur aufarbeitung von nitro-hydroxy-aromaten enthaltenden abwaessern
US4241229A (en) * 1979-08-08 1980-12-23 American Cyanamid Company Recovery of nitrated aromatic compounds from nitration wash liquors
US4597875A (en) * 1985-05-07 1986-07-01 Air Products And Chemicals, Inc. Precipitative removal of nitrocresols from dinitrotoluene waste streams
US4925565A (en) * 1988-09-12 1990-05-15 First Chemical Corporation Process for extracting and disposing of nitrophenolic by-products
DE4107972A1 (de) 1991-03-13 1992-09-17 Basf Ag Verfahren zum abbau von aromatischen nitroverbindungen enthaltenden abwaessern
US5221440A (en) * 1992-04-20 1993-06-22 Rubicon Inc. Process for destruction of nitro-hydroxy-aromatic compounds in aqueous media
FR2714666B1 (fr) * 1993-12-31 1996-03-01 Rhone Poulenc Chimie Procédé d'élimination d'effluents aqueux comprenant notamment des composés hydroxynitroaromatiques.
FR2767319B1 (fr) * 1997-08-13 1999-10-29 Rhone Poulenc Chimie Procede de traitement de solutions aqueuses comprenant des acides et des composes nitres
DE19815844A1 (de) * 1998-04-08 1999-10-14 Basf Ag Verfahren zum Abbau von aromatischen Nitroverbindungen in Abwässern
US6288289B1 (en) * 2000-01-27 2001-09-11 Noram Engineering And Constructors Ltd. Integrated effluent treatment process for nitroaromatic manufacture
DE10329303A1 (de) * 2003-06-30 2005-02-03 Bayer Materialscience Ag Verfahren zur Aufarbeitung des bei der Herstellung von Dinitrotoluol anfallenden Abwassers

Also Published As

Publication number Publication date
KR20060046629A (ko) 2006-05-17
US20050224424A1 (en) 2005-10-13
JP4898134B2 (ja) 2012-03-14
CN1680198A (zh) 2005-10-12
BRPI0501182B1 (pt) 2014-12-23
DE102004017628A1 (de) 2005-11-03
CN100526235C (zh) 2009-08-12
TW200613225A (en) 2006-05-01
US7344650B2 (en) 2008-03-18
PT1593654E (pt) 2013-06-12
JP2005296949A (ja) 2005-10-27
KR101206597B1 (ko) 2012-11-29
EP1593654B1 (de) 2013-04-24
ES2411661T3 (es) 2013-07-08
PL1593654T3 (pl) 2013-08-30
SG116599A1 (en) 2005-11-28
EP1593654A1 (de) 2005-11-09

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/04/2005, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)