IN187139B - - Google Patents

Info

Publication number
IN187139B
IN187139B IN475CA1996A IN187139B IN 187139 B IN187139 B IN 187139B IN 475CA1996 A IN475CA1996 A IN 475CA1996A IN 187139 B IN187139 B IN 187139B
Authority
IN
India
Prior art keywords
soln
nitration
dnt
acid
dinitroluene
Prior art date
Application number
Other languages
English (en)
Inventor
Heinrich Dr Hermann
Jurgen Gebauer
Original Assignee
Meissner Gmbh & Co Kg Josef
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=IN187139(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Meissner Gmbh & Co Kg Josef filed Critical Meissner Gmbh & Co Kg Josef
Publication of IN187139B publication Critical patent/IN187139B/en

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
IN475CA1996 1995-04-04 1996-03-18 IN187139B (zh)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IN187139B true IN187139B (zh) 2002-02-09

Family

ID=7758446

Family Applications (1)

Application Number Title Priority Date Filing Date
IN475CA1996 IN187139B (zh) 1995-04-04 1996-03-18

Country Status (8)

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

Families Citing this family (27)

* 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
US9249083B2 (en) 2012-04-25 2016-02-02 Basf Se Process for scrubbing dinitrotoluene
PT2841412E (pt) 2012-04-25 2016-06-02 Meissner Gmbh & Co Kg Josef Processo para a lavagem de dinitrotolueno
PT106909B (pt) * 2013-04-26 2017-06-01 Cuf - Quim Ind S A Processo e equipamento para remoção de impurezas de compostos aromáticos nitrados
EP3041818B1 (en) * 2013-09-05 2018-06-13 Basf Se Method for removing hcn from crude dinitro toluene
WO2015059185A1 (de) 2013-10-22 2015-04-30 Basf Se Verfahren zur sauren wäsche von dinitrotoluol in gegenwart von blausäure
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
KR102414963B1 (ko) 2014-06-24 2022-07-01 코베스트로 도이칠란트 아게 니트로벤젠의 제조 방법
DE102015106617B4 (de) 2014-07-07 2017-09-21 Josef Meissner Gmbh & Co. Kg Verfahren zur Aufreinigung von Rohdinitrotoluolen
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
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
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
CN113912470A (zh) * 2020-07-09 2022-01-11 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

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB125140A (zh) †
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 Maurice W. Hunt 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
CA2099108A1 (en) 1990-12-24 1992-06-25 Udo Dettmeier Method for the continuous nitration of nitrable aromatic compounds

Also Published As

Publication number Publication date
DE59607109D1 (de) 2001-07-26
EP0736514B2 (de) 2010-10-13
CA2173381A1 (en) 1996-10-05
PL187688B1 (pl) 2004-09-30
DE19512114A1 (de) 1996-10-10
ATE202333T1 (de) 2001-07-15
EP0736514A1 (de) 1996-10-09
CN1145893A (zh) 1997-03-26
CA2173381C (en) 2007-06-26
CN1085656C (zh) 2002-05-29
US5756867A (en) 1998-05-26
PL313631A1 (en) 1996-10-14
EP0736514B1 (de) 2001-06-20
DE19512114C2 (de) 2000-04-27

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