BR0302097A - Processo para a purificação de misturas de diisocianato de tolueno, incorporando uma coluna de destilação de parede divisória - Google Patents

Processo para a purificação de misturas de diisocianato de tolueno, incorporando uma coluna de destilação de parede divisória

Info

Publication number
BR0302097A
BR0302097A BR0302097-5A BR0302097A BR0302097A BR 0302097 A BR0302097 A BR 0302097A BR 0302097 A BR0302097 A BR 0302097A BR 0302097 A BR0302097 A BR 0302097A
Authority
BR
Brazil
Prior art keywords
purification
distillation column
partition wall
toluene diisocyanate
wall distillation
Prior art date
Application number
BR0302097-5A
Other languages
English (en)
Inventor
Bill Brady
Friedhelm Steffens
Berthold Keggenhoff
Kai Verkerk
Gerhard Ruffert
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 BR0302097A publication Critical patent/BR0302097A/pt

Links

Classifications

    • 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
    • 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
    • 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
    • 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 MISTURAS DE DIISOCIANATO DE TOLUENO, INCORPORANDO UMA COLUNA DE DESTILAçãO DE PAREDE DIVISóRIA". A presente invenção refere-se a um processo para a purificação de diisocianato de tolueno de uma alimentação de destilação bruta, que compreende diisocianato de tolueno, um solvente orgânico e menos de 2% em peso de fosgênio, por separação da alimentação de destilação bruta em uma coluna de destilação de parede divisória, em pelo menos quatro frações de produto P1 - P4, em que: P1 é um produto de baixo ponto de ebulição enriquecido com fosgênio; P2 é um produto enriquecido com solvente; P3 é um produto de fundo enriquecido com frações de alto ponto de ebulição; e P4 é uma corrente de produto de diisocianato de tolueno.
BR0302097-5A 2002-06-14 2003-06-13 Processo para a purificação de misturas de diisocianato de tolueno, incorporando uma coluna de destilação de parede divisória BR0302097A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02013460A EP1371633A1 (en) 2002-06-14 2002-06-14 Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column

Publications (1)

Publication Number Publication Date
BR0302097A true BR0302097A (pt) 2004-09-08

Family

ID=29558345

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0302097-5A BR0302097A (pt) 2002-06-14 2003-06-13 Processo para a purificação de misturas de diisocianato de tolueno, incorporando uma coluna de destilação de parede divisória

Country Status (11)

Country Link
US (1) US7118653B2 (pt)
EP (2) EP1371633A1 (pt)
JP (1) JP4443149B2 (pt)
KR (1) KR100984426B1 (pt)
CN (1) CN1310876C (pt)
AT (1) ATE395329T1 (pt)
BR (1) BR0302097A (pt)
CA (1) CA2431439A1 (pt)
DE (1) DE60320895D1 (pt)
MX (1) MXPA03005248A (pt)
TW (1) TWI281912B (pt)

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US20150052940A1 (en) * 2013-08-23 2015-02-26 Uop Llc Fractionation system and method including depropanizer column and bottoms stripping column
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CN105502397B (zh) * 2015-12-04 2017-11-10 沧州大化股份有限公司 一种光气混合物脱除CCl4的方法
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CN116217439B (zh) * 2023-01-03 2025-05-13 万华化学集团股份有限公司 一种光气化制备mdi的循环溶剂及其提纯方法
CN116789568B (zh) * 2023-06-20 2025-05-13 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
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Also Published As

Publication number Publication date
JP2004155760A (ja) 2004-06-03
MXPA03005248A (es) 2004-05-05
EP1371635B1 (en) 2008-05-14
ATE395329T1 (de) 2008-05-15
CN1467202A (zh) 2004-01-14
KR100984426B1 (ko) 2010-09-29
EP1371635A1 (en) 2003-12-17
EP1371633A1 (en) 2003-12-17
US20030230476A1 (en) 2003-12-18
CN1310876C (zh) 2007-04-18
CA2431439A1 (en) 2003-12-14
TW200404761A (en) 2004-04-01
DE60320895D1 (de) 2008-06-26
US7118653B2 (en) 2006-10-10
TWI281912B (en) 2007-06-01
JP4443149B2 (ja) 2010-03-31
KR20030096037A (ko) 2003-12-24

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