CA2173381C - Recovery of nitric acid from nitration processes - Google Patents

Recovery of nitric acid from nitration processes Download PDF

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Publication number
CA2173381C
CA2173381C CA002173381A CA2173381A CA2173381C CA 2173381 C CA2173381 C CA 2173381C CA 002173381 A CA002173381 A CA 002173381A CA 2173381 A CA2173381 A CA 2173381A CA 2173381 C CA2173381 C CA 2173381C
Authority
CA
Canada
Prior art keywords
acid
dinitrotoluene
aqueous solution
dnt
nitric
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 - Fee Related
Application number
CA002173381A
Other languages
English (en)
French (fr)
Other versions
CA2173381A1 (en
Inventor
Heinrich Hermann
Jurgen Gebauer
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.)
Josef Meissner GmbH and Co KG
Original Assignee
Josef Meissner GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7758446&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2173381(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Josef Meissner GmbH and Co KG filed Critical Josef Meissner GmbH and Co KG
Publication of CA2173381A1 publication Critical patent/CA2173381A1/en
Application granted granted Critical
Publication of CA2173381C publication Critical patent/CA2173381C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C07C201/08—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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing Of Solid Wastes (AREA)
CA002173381A 1995-04-04 1996-04-03 Recovery of nitric acid from nitration processes Expired - Fee Related CA2173381C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512114.7 1995-04-04
DE19512114A DE19512114C2 (de) 1995-04-04 1995-04-04 Rückgewinnung von Salpetersäure aus Nitrierprozessen

Publications (2)

Publication Number Publication Date
CA2173381A1 CA2173381A1 (en) 1996-10-05
CA2173381C true CA2173381C (en) 2007-06-26

Family

ID=7758446

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002173381A Expired - Fee Related CA2173381C (en) 1995-04-04 1996-04-03 Recovery of nitric acid from nitration processes

Country Status (8)

Country Link
US (1) US5756867A (https=)
EP (1) EP0736514B2 (https=)
CN (1) CN1085656C (https=)
AT (1) ATE202333T1 (https=)
CA (1) CA2173381C (https=)
DE (2) DE19512114C2 (https=)
IN (1) IN187139B (https=)
PL (1) PL187688B1 (https=)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2767318B1 (fr) * 1997-08-13 1999-10-29 Rhodia Chimie Sa Procede de recuperation d'acide nitrique compris dans un melange de composes aromatiques dinitres
US5963878A (en) * 1998-07-30 1999-10-05 Noram Engineering & Constructors Ltd. Nitration process
US6288289B1 (en) † 2000-01-27 2001-09-11 Noram Engineering And Constructors Ltd. Integrated effluent treatment process for nitroaromatic manufacture
DE10143800C1 (de) * 2001-09-06 2002-08-22 Plinke Gmbh Verfahren zur Minimierung des Abwassers bei der Herstellung von DNT
DE10329303A1 (de) * 2003-06-30 2005-02-03 Bayer Materialscience Ag Verfahren zur Aufarbeitung des bei der Herstellung von Dinitrotoluol anfallenden Abwassers
DE102004005913A1 (de) 2004-02-05 2005-08-25 Basf Ag Verfahren zur Herstellung von Dinitrotoluol
DE102005050106B4 (de) * 2005-10-18 2008-04-30 Josef Meissner Gmbh & Co. Kg Rückgewinnung von Nitriersäuregemischen aus Nitrienprozessen
CN100369885C (zh) * 2006-01-17 2008-02-20 甘肃银光化学工业集团有限公司 连续制备二硝基甲苯的方法及其装置
DE102006033722A1 (de) * 2006-07-21 2008-01-24 Bayer Materialscience Ag Verfahren zur Herstellung von Dinitrotoluol
DE102006060572A1 (de) * 2006-12-19 2008-06-26 Bayer Materialscience Ag Verfahren zur Herstellung von Toluylendiaminen durch katalytische Hydrierung von Dinitrotoluolen
US9115048B2 (en) 2011-05-19 2015-08-25 Josef Meissner Gmbh & Co. Kg Method and apparatus for purifying nitration products
PL2841412T3 (pl) * 2012-04-25 2016-10-31 Sposób przemywania dinitrotoluenu
US9249083B2 (en) 2012-04-25 2016-02-02 Basf Se Process for scrubbing dinitrotoluene
PT106909B (pt) * 2013-04-26 2017-06-01 Cuf - Quim Ind S A Processo e equipamento para remoção de impurezas de compostos aromáticos nitrados
WO2015032706A1 (en) * 2013-09-05 2015-03-12 Basf Se Method for removing hcn from crude dinitro toluene
HUE040622T2 (hu) 2013-10-22 2019-03-28 Basf Se Eljárás dinitrotoluol savas mosására hidrogéncianid jelenlétében
CN103714876B (zh) * 2014-01-06 2016-09-14 中国原子能科学研究院 一种亚硝酸的脱除方法
JP6661555B2 (ja) 2014-06-24 2020-03-11 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ ニトロベンゼンの製造方法
DE102015106617B4 (de) 2014-07-07 2017-09-21 Josef Meissner Gmbh & Co. Kg Verfahren zur Aufreinigung von Rohdinitrotoluolen
CN107986250B (zh) * 2017-10-31 2020-08-04 湖北东方化工有限公司 一种硝基甲苯废硫酸处理低浓度稀硝酸的提浓装置
CN107902634B (zh) * 2017-10-31 2020-08-04 湖北东方化工有限公司 一种硝基甲苯废硫酸处理低浓度稀硝酸微成本提高浓度的生产装置
CN107986249B (zh) * 2017-10-31 2020-08-04 湖北东方化工有限公司 硝基甲苯废酸脱硝后稀硝酸去除硝基甲苯的方法
DE102018217955B4 (de) * 2018-10-19 2020-06-04 Plinke Gmbh Verfahren zur Aufarbeitung von Mischsäure und Abwasser aus der Nitrierung von Aromaten sowie Vorrichtung zur Durchführung des Verfahrens
CN113912470B (zh) * 2020-07-09 2024-09-27 中国石化工程建设有限公司 一种回收硝酸的方法及装置
CN111807963B (zh) * 2020-08-07 2022-11-18 山东友道化学有限公司 间甲基苯甲酸的绿色硝化处理方法
CN113184815B (zh) * 2020-10-29 2023-08-15 江苏方圆芳纶研究院有限公司 一种利用氮氧化物制备硝化混酸的方法
CN113371768B (zh) * 2021-05-31 2023-04-18 湖北东方化工有限公司 一种tnt废酸-残液回收工艺及装置
CN115893339B (zh) * 2022-12-15 2025-04-25 万华化学集团股份有限公司 一种粗dnt中硝酸的回收方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB125140A (https=) †
DE1418624C3 (de) * 1960-12-22 1973-01-04 Ab Chematur, Stockholm Verfahren zur kontinuierlichen Herstellung von Dinitrotoluol, Trinitrotoluol und deren Gemischen
GB1081092A (en) † 1964-01-08 1967-08-31 Ici Ltd Purification of dinitrotoluenes
CA1034603A (en) 1973-10-05 1978-07-11 Allied Chemical Corporation Water washing of nitroaromatic compounds prior to catalytic reduction
US4257986A (en) * 1979-02-02 1981-03-24 Air Products And Chemicals, Inc. Process for refining aqueous acid mixtures utilized in nitration of aromatics
JPS56142245A (en) * 1980-04-09 1981-11-06 Mitsubishi Chem Ind Ltd Purification of crude dinitrotoluene
US4496782A (en) * 1983-07-08 1985-01-29 Air Products And Chemicals, Inc. Nitric acid recovery by the adiabatic nitration of nitroaromatics with fortified spent acid
DE3409719A1 (de) * 1984-03-16 1985-09-19 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von dinitrotoluol
US4650912A (en) * 1985-03-26 1987-03-17 Air Products And Chemicals, Inc. Recovery of nitric acid from nitration spent acid by toluene extraction
DE3705091A1 (de) * 1987-02-18 1988-09-01 Bayer Ag Verfahren zur abtrennung von schwefelsaeure und salpetersaeure aus bei der nitrierung von toluol erhaltenen dinitrotoluolgemischen
US5006325A (en) * 1989-08-28 1991-04-09 Air Products And Chemical, Inc. Process for the recovery of nitric acid
US5057632A (en) 1990-10-22 1991-10-15 Olin Corporation Process for preparing dinitrotoluene
WO1992011227A1 (de) 1990-12-24 1992-07-09 Hoechst Aktiengesellschaft Verfahren zur kontinuierlichen nitrierung von nitrierbaren aromatischen verbindungen

Also Published As

Publication number Publication date
PL187688B1 (pl) 2004-09-30
IN187139B (https=) 2002-02-09
PL313631A1 (en) 1996-10-14
EP0736514B1 (de) 2001-06-20
EP0736514A1 (de) 1996-10-09
DE19512114A1 (de) 1996-10-10
CA2173381A1 (en) 1996-10-05
ATE202333T1 (de) 2001-07-15
CN1145893A (zh) 1997-03-26
US5756867A (en) 1998-05-26
CN1085656C (zh) 2002-05-29
DE59607109D1 (de) 2001-07-26
EP0736514B2 (de) 2010-10-13
DE19512114C2 (de) 2000-04-27

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CA2173381C (en) Recovery of nitric acid from nitration processes
RU2356885C2 (ru) Способ удаления и регенерации смесей нитрующих кислот из процессов нитрования и промышленная установка для нитрования
US6936741B2 (en) Process for working up the waste water obtained in the preparation of dinitrotoluene
KR20120102120A (ko) Ｄｎｔ 폐수의 산성 톨루엔 추출
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US6953869B2 (en) Process for working up secondary components in the preparation of dinitrotoluene
DE102015106617A1 (de) Verfahren zur Entfernung von Verunreinigungen aus Dinitrotoluolen
EP0279312B1 (de) Verfahren zur Abtrennung von Schwefelsäure und Salpetersäure aus bei der Nitrierung von Toluol erhaltenen Dinitrotoluolgemischen
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US4257986A (en) Process for refining aqueous acid mixtures utilized in nitration of aromatics
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