BR0304624A - Processo para a purificação de toluenodiisocianato incorporando uma coluna de destilação com parede divisória para a puruficação final - Google Patents

Processo para a purificação de toluenodiisocianato incorporando uma coluna de destilação com parede divisória para a puruficação final

Info

Publication number
BR0304624A
BR0304624A BR0304624-9A BR0304624A BR0304624A BR 0304624 A BR0304624 A BR 0304624A BR 0304624 A BR0304624 A BR 0304624A BR 0304624 A BR0304624 A BR 0304624A
Authority
BR
Brazil
Prior art keywords
solvent
purification
tdi
distillation column
weight
Prior art date
Application number
BR0304624-9A
Other languages
English (en)
Inventor
Marcus Paul Gruen
Bill Brady Jr
Berthold Keggenhoff
Kai Verkerk
Hans-Peter Schal
Original Assignee
Bayer 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 Ag filed Critical Bayer Ag
Publication of BR0304624A publication Critical patent/BR0304624A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification
    • 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
    • Y10S203/00—Distillation: processes, separatory
    • Y10S203/11—Batch distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

"PROCESSO PARA A PURIFICAçãO DE TOLUENODIISOCIANATO INCORPORANDO UMA COLUNA DE DESTILAçãO COM PAREDE DIVISóRIA PARA A PURIFICAçãO FINAL". A invenção refere-se a um processo para purificação de toluenodiisocianato oriundo de uma alimentação bruta de destilação contendo menos que 2% em peso de fosgênio por a) fracionamento da alimentação bruta de destilação contendo menos que 2% em peso de fosgênio para remover o solvente e, opcionalmente, os resíduos de reação, para produzir uma alimentação bruta de toluenodiisociantao contendo menos que 20% em peso de solvente e b) separar a alimentação bruta de toluenodiisocianato contendo menos de 20% em peso de solvente em uma coluna de destilação com parede divisória, em quatro frações de produto P1 - P4, em que P1 é uma corrente gasosa enriquecida com solvente e compostos de baixo ponto de ebulição em fase de vapor, P2 é um produto enriquecido com solvente e compostos de baixo ponto de ebulição, P3 é um produto inferior enriquecido com compostos de alto ponto de ebulição contendo toluenodiisocianato e P4 é uma corrente de produto pobre de toluenodiisocianato em compostos com baixo ponto de ebulição, compostos com alto ponto de ebulição e resíduos de reação.
BR0304624-9A 2002-10-22 2003-10-20 Processo para a purificação de toluenodiisocianato incorporando uma coluna de destilação com parede divisória para a puruficação final BR0304624A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02023662A EP1413571B1 (en) 2002-10-22 2002-10-22 Process for the purification of toluenediisocyanate incorporating a dividing-wall distillation column for the final purification

Publications (1)

Publication Number Publication Date
BR0304624A true BR0304624A (pt) 2004-08-31

Family

ID=32050003

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0304624-9A BR0304624A (pt) 2002-10-22 2003-10-20 Processo para a purificação de toluenodiisocianato incorporando uma coluna de destilação com parede divisória para a puruficação final

Country Status (12)

Country Link
US (1) US7108770B2 (pt)
EP (1) EP1413571B1 (pt)
JP (1) JP4360878B2 (pt)
KR (1) KR101020373B1 (pt)
CN (1) CN1290824C (pt)
AT (1) ATE337297T1 (pt)
BR (1) BR0304624A (pt)
CA (1) CA2445209A1 (pt)
DE (1) DE60214195T2 (pt)
ES (1) ES2271171T3 (pt)
MX (1) MXPA03009607A (pt)
TW (1) TWI280956B (pt)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10260027A1 (de) * 2002-12-19 2004-07-08 Basf Ag Verfahren zur Abtrennung und Reinigung von Lösungsmittel von einem Reaktionsgemisch aus einer Isocyanatsynthese
DE10260092A1 (de) * 2002-12-19 2004-07-01 Basf Ag Verfahren zur Reinigung von Isocyanaten
DE102005004170A1 (de) * 2005-01-29 2006-08-03 Bayer Materialscience Ag Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
JP4606918B2 (ja) * 2005-03-25 2011-01-05 三井化学株式会社 安定化された脂肪族及び／または脂環族イソシアナートを含有する組成物
DE102005032430A1 (de) * 2005-07-12 2007-01-25 Bayer Materialscience Ag Verfahren zur Herstellung von Toluylendiamin
US8030522B2 (en) * 2006-06-07 2011-10-04 Bayer Materialscience Llc Process for the production of toluene diisocyanate
DE502007003040D1 (de) * 2006-09-28 2010-04-15 Basf Se Verfahren zur kontinuierlichen destillativen auftrennung von gemischen enthaltend morpholin (mo), monoaminodiglykol (adg), ammoniak und wasser
HUE029625T2 (en) * 2006-11-07 2017-03-28 Basf Se Process for the preparation of isocyanates
DE102006060181A1 (de) * 2006-12-18 2008-06-19 Bayer Materialscience Ag Verfahren zur Herstellung von Toluylendiisocyanat
DE102007020444A1 (de) 2007-04-27 2008-11-06 Bayer Materialscience Ag Verfahren zur Oxidation eines Chlorwasserstoffenthaltenden Gasgemisches
JP5479675B2 (ja) * 2007-11-14 2014-04-23 三井化学株式会社 トルエンジイソシアネートの製造方法
US20110172458A1 (en) * 2008-10-02 2011-07-14 Dow Global Technologies Llc Apparatus, Systems, and Methods for Purification of Isocyanate Mixtures
US8845864B2 (en) * 2009-02-12 2014-09-30 Lg Chem, Ltd. Dividing wall distillation column
CN101671277B (zh) * 2009-09-18 2011-12-28 天津大学 一种甲苯二异氰酸酯连续生产中热集成的溶剂回收方法
ES2658214T3 (es) 2012-03-19 2018-03-08 Covestro Deutschland Ag Procedimiento para la preparación de isocianatos
HUE031803T2 (en) 2012-07-11 2017-08-28 Covestro Deutschland Ag Process for processing distillation residues from the production of isocyanate
EP2953928B1 (de) 2013-02-08 2017-08-09 Covestro Deutschland AG Verfahren zur abtrennung eines durch phosgenierung eines primären amins in der gasphase hergestellten isocyanats aus dem gasförmigen rohprodukt der phosgenierung
US10131641B2 (en) 2013-03-12 2018-11-20 Covestro Deutschland Ag Method for producing TDI-trimerisates with high purity
EP2970108B1 (de) * 2013-03-12 2018-06-27 Covestro Deutschland AG Verfahren zur herstellung von farbhellen tdi-polyisocyanaten
KR20160044473A (ko) 2013-08-19 2016-04-25 코베스트로 도이칠란트 아게 이소시아네이트 제조로부터의 증류 잔류물로부터 유기 이소시아네이트를 수득하는 방법
CN103432761B (zh) * 2013-08-20 2015-07-29 李群 分离二氯苯同分异构体的精馏方法
WO2015144682A1 (de) 2014-03-27 2015-10-01 Bayer Material Science Ag Verfahren zum betreiben einer gasphasenphosgenierungsanlage
KR20160138410A (ko) 2014-03-27 2016-12-05 코베스트로 도이칠란트 아게 기체 상 포스겐화 플랜트의 가동 방법
EP2952237A1 (en) 2014-06-02 2015-12-09 Sulzer Chemtech AG Method for purification of benzoic acid
CN106458842B (zh) 2014-06-24 2020-02-11 科思创德国股份有限公司 具有运行中断的用于制备化学产物的方法
CN104311454A (zh) * 2014-11-05 2015-01-28 朱忠良 一种甲苯二异氰酸酯的分离方法
CN104529824B (zh) * 2014-12-25 2016-07-06 青岛科技大学 一种3,5-二氯苯基异氰酸酯的精制方法
WO2017055311A1 (de) 2015-09-30 2017-04-06 Covestro Deutschland Ag Verfahren zur herstellung von isocyanaten
US10576392B2 (en) 2015-11-02 2020-03-03 Covestro Deutschland Ag Distillation column and use thereof for cleaning isocyanates
TWI746500B (zh) * 2016-01-22 2021-11-21 美商愛克瑪公司 使用分隔壁塔蒸餾純化硫醇或噻吩
CN109563028B (zh) 2016-08-17 2021-11-19 科思创德国股份有限公司 在生产联合体中制备异氰酸酯和至少一种其他化学产品的方法
KR102039089B1 (ko) 2016-12-15 2019-11-26 한화케미칼 주식회사 톨루엔디이소시아네이트 정제 방법
CN110072845B (zh) 2016-12-21 2022-04-08 科思创德国股份有限公司 制备异氰酸酯的方法
US11052324B2 (en) * 2018-09-14 2021-07-06 Exxonmobil Research & Engineering Company Advanced process control scheme for dividing wall column and dual-dividing wall column with multiple products
WO2020201277A1 (de) 2019-04-02 2020-10-08 Covestro Intellectual Property Gmbh & Co. Kg Trocknungsvorrichtung und ihre verwendung sowie verfahren zur herstellung eines isocyanats unter einsatz der trockungsvorrichtung
EP4031526B1 (de) 2019-09-17 2024-07-10 Covestro Deutschland AG Verfahren zur herstellung von isocyanaten
EP3960728A1 (de) 2020-08-24 2022-03-02 Covestro Deutschland AG Verfahren zur isocyanat-herstellung mit rezyklierender, thermisch oxidativer verwertung
KR20220095865A (ko) * 2020-12-30 2022-07-07 한화솔루션 주식회사 이소시아네이트 화합물의 제조 방법
KR20220095866A (ko) * 2020-12-30 2022-07-07 한화솔루션 주식회사 이소시아네이트 화합물의 제조 방법
WO2023140986A1 (en) 2022-01-19 2023-07-27 Exxonmobil Chemical Patents Inc. Compositions containing tri-cyclopentadiene and processes for making same
CN116789568A (zh) * 2023-06-20 2023-09-22 沧州大化股份有限公司 一种降低甲苯二异氰酸酯中水解氯含量的方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471134A (en) * 1946-07-17 1949-05-24 Standard Oil Dev Co Fractionation apparatus
US2908704A (en) * 1957-08-07 1959-10-13 Du Pont Process of preparing isocyanates
US3287387A (en) * 1963-07-29 1966-11-22 Olin Mathieson Process for the production of aromatic isocyanates
US3321283A (en) * 1963-12-23 1967-05-23 Mobay Chemical Corp Apparatus for conducting rapid chemical reactions
US3499021A (en) * 1966-10-19 1970-03-03 Olin Mathieson Toluene diisocyanate process
US3987075A (en) * 1972-01-03 1976-10-19 Olin Corporation Solvent extraction and distillation technique for purification of organic isocyanates
DE2452805A1 (de) * 1974-11-07 1976-05-20 Basf Ag Verfahren zur abtrennung von rueckstaenden der toluylendiisocyanatherstellung
DE3430022A1 (de) * 1984-08-16 1986-02-27 Bayer Ag, 5090 Leverkusen Verfahren zur gewinnung von reinen diisocyanaten
JPH07636B2 (ja) * 1984-12-17 1995-01-11 三井東圧化学株式会社 Ｎ−ホルミル−α−アスパルチルフエニルアラニンの製造法
DE3736988C1 (de) * 1987-10-31 1989-03-23 Bayer Ag Verfahren zur kontinuierlichen Herstellung von organischen Mono- und Polyisocyanaten
DE4217019A1 (de) * 1992-05-22 1993-11-25 Bayer Ag Verfahren zur Herstellung von aromatischen Diisocyanaten
DE19528781A1 (de) * 1995-08-04 1997-02-06 Bayer Ag Verfahren zur Herstellung von Toluylendiisocyanat, spezielle Gemische aus Toluylendiamin und Wasser und deren Verwendung zur Herstellung von Toluylendiisocyanat
EP1371633A1 (en) * 2002-06-14 2003-12-17 Bayer Ag Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column
EP1371634A1 (en) * 2002-06-14 2003-12-17 Bayer Ag Process for the purification of mixtures of toluenediisocyanate

Also Published As

Publication number Publication date
KR20040035567A (ko) 2004-04-29
DE60214195D1 (de) 2006-10-05
EP1413571A1 (en) 2004-04-28
ES2271171T3 (es) 2007-04-16
DE60214195T2 (de) 2007-10-04
JP2004143173A (ja) 2004-05-20
CN1496978A (zh) 2004-05-19
JP4360878B2 (ja) 2009-11-11
CN1290824C (zh) 2006-12-20
US20040118672A1 (en) 2004-06-24
CA2445209A1 (en) 2004-04-22
US7108770B2 (en) 2006-09-19
TWI280956B (en) 2007-05-11
MXPA03009607A (es) 2004-09-24
ATE337297T1 (de) 2006-09-15
EP1413571B1 (en) 2006-08-23
TW200418767A (en) 2004-10-01
KR101020373B1 (ko) 2011-03-08

Similar Documents

Publication Publication Date Title
BR0304624A (pt) Processo para a purificação de toluenodiisocianato incorporando uma coluna de destilação com parede divisória para a puruficação final
BR0302097A (pt) Processo para a purificação de misturas de diisocianato de tolueno, incorporando uma coluna de destilação de parede divisória
MXPA03005247A (es) Procedimiento para furificacion de mezclas de toluenodiisocianato.
KR101075296B1 (ko) 디이소시아네이토디페닐메탄 이성질체 혼합물의 증류 방법
EP2337777B1 (en) Methods for purification of isocyanate mixtures
JP2007023033A (ja) ｍ−トルエンジアミン又はｍ−トルエンジイソシアナートの製造法
ATE349422T1 (de) Verfahren zur herstellung von isocyanaten und reaktionsvorrichtung
JP5931898B2 (ja) メチレンジ（フェニルイソシアネート）の製造方法
KR20040093442A (ko) 증류에 의한 고순도 트리에틸렌디아민 (ｔｅｄａ)의 단리
GB9711484D0 (en) Recovery of products from toluenediisocyanate residues
DE60013012D1 (de) Verfahren zur Trennung von Fluorwasserstoff und 1,1,1,3,3-Pentafluorbutan enthaltenden Gemischen und Verfahren zur Herstellung von 1,1,1,3,3-Pentafluorbutan
RU2211827C1 (ru) Способ ректификации смеси хлорпроизводных пропилена
WO2023041769A1 (en) Obtaining aliphatic amines from compositions
BR0302098A (pt) Processo para purificação de misturas de diisocianato de tolueno
Dokhani et al. The New Way and Result in Combination of Distillation Columns
Gajcy et al. Concise Synthesis of Non-Protein Amino Acid from Natural Product via
Fleming et al. A simple method for enriching the enantiomeric purity of a functional molecule already rich in one enantiomer
RU2000127660A (ru) Способ выделения циклогексана

Legal Events

Date Code Title Description
B03H Publication of an application: rectification [chapter 3.8 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A E 6A ANUIDADES

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2042 DE 23/02/2010.