MXPA03009607A - Procedimiento para la purificacion de toluenodiisocianato incorporando una columna de destilacion con pared divisoria para la purificacion final. - Google Patents

Procedimiento para la purificacion de toluenodiisocianato incorporando una columna de destilacion con pared divisoria para la purificacion final.

Info

Publication number
MXPA03009607A
MXPA03009607A MXPA03009607A MXPA03009607A MXPA03009607A MX PA03009607 A MXPA03009607 A MX PA03009607A MX PA03009607 A MXPA03009607 A MX PA03009607A MX PA03009607 A MXPA03009607 A MX PA03009607A MX PA03009607 A MXPA03009607 A MX PA03009607A
Authority
MX
Mexico
Prior art keywords
solvent
purification
toluene diisocyanate
weight
less
Prior art date
Application number
MXPA03009607A
Other languages
English (en)
Inventor
Schal Hans-Peter
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 MXPA03009607A publication Critical patent/MXPA03009607A/es

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00Preparation of derivatives of isocyanic acid
    • C07C263/10Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00Preparation of derivatives of isocyanic acid
    • C07C263/18Separation; Purification; Stabilisation; Use of additives
    • C07C263/20Separation; Purification
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S203/00Distillation: processes, separatory
    • Y10S203/11Batch 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

La invencion se refiere a un procedimiento para la purificacion de toluenodiisocianato a partir de una corriente alimento de destilacion bruta que comprende menos de 2% en peso de fosgeno caracterizado por a) fraccionar la corriente alimento de destilacion bruta que comprende menos de 2% en peso de fosgeno para eliminar el disolvente y, opcionalmente los residuos de reaccion, produciendo un alimento de toluilenodiisocianato bruto que comprende menos de 20% en peso de disolvente, y b) separar la corriente alimento de toluilenodiisocianato bruto que comprende menos de 20% en peso de disolvente en una columna de destilacion con pared divisoria en cuatro fracciones producto P1 a P4, en las que P1 es una corriente de gas enriquecida en componentes de bajo punto de ebullicion en fase vapor y disolvente, P2 es un producto enriquecido en componentes de bajo punto de ebullicion y disolvente, P3 es un producto de cola enriquecido en componentes de alto punto de ebullicion que comprende toluenodiisocianato y P4 es una corriente de toluenodiisocianato producto pobre en componentes de bajo punto de ebullicion, de alto punto de ebullicion y residuos de reaccion.
MXPA03009607A 2002-10-22 2003-10-20 Procedimiento para la purificacion de toluenodiisocianato incorporando una columna de destilacion con pared divisoria para la purificacion final. MXPA03009607A (es)

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
MXPA03009607A true MXPA03009607A (es) 2004-09-24

Family

ID=32050003

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA03009607A MXPA03009607A (es) 2002-10-22 2003-10-20 Procedimiento para la purificacion de toluenodiisocianato incorporando una columna de destilacion con pared divisoria para la purificacion final.

Country Status (12)

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

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JP5460327B2 (ja) * 2006-11-07 2014-04-02 ビーエーエスエフ ソシエタス・ヨーロピア イソシアネートの製造方法
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
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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
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CN105121403B (zh) 2013-02-08 2017-12-08 科思创德国股份有限公司 从光气化的气体粗产物中分离由伯胺在气相中的光气化制备的异氰酸酯的方法
JP6472759B2 (ja) * 2013-03-12 2019-02-20 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 淡色のtdiポリイソシアネートを製造するための方法
CN105026454A (zh) 2013-03-12 2015-11-04 拜耳材料科技股份有限公司 制备具有高纯度的tdi-三聚体的方法
CN105452216B (zh) 2013-08-19 2018-06-05 科思创德国股份公司 由制备异氰酸酯的蒸馏残渣获得有机异氰酸酯的方法
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
HUE039109T2 (hu) 2014-03-27 2018-12-28 Covestro Deutschland Ag Eljárás egy gáz fázisú foszgénezõ berendezés üzemeltetésére
EP3122720B1 (de) 2014-03-27 2018-06-13 Covestro Deutschland AG Verfahren zum betreiben einer gasphasenphosgenierungsanlage
EP2952237A1 (en) 2014-06-02 2015-12-09 Sulzer Chemtech AG Method for purification of benzoic acid
SG11201610637WA (en) 2014-06-24 2017-01-27 Covestro Deutschland Ag Methods for producing chemical products with operation interruptions
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
CN108137488B (zh) 2015-09-30 2021-02-26 科思创德国股份有限公司 制备异氰酸酯的方法
WO2017076551A1 (de) 2015-11-02 2017-05-11 Covestro Deutschland Ag Destillationskolonne und ihre anwendung in der reinigung von isocyanaten
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
JP7022113B2 (ja) 2016-08-17 2022-02-17 コベストロ、ドイチュラント、アクチエンゲゼルシャフト 統合された製造におけるイソシアネートおよび少なくとも1つの追加の化学製品の製造方法
KR102039089B1 (ko) * 2016-12-15 2019-11-26 한화케미칼 주식회사 톨루엔디이소시아네이트 정제 방법
HUE053661T2 (hu) 2016-12-21 2021-07-28 Covestro Intellectual Property Gmbh & Co Kg Eljárás egy izocianát elõállítására
WO2020055551A1 (en) * 2018-09-14 2020-03-19 Exxonmobil Research And Engineering Company Advanced process control scheme for dividing wall column and dual-dividing wall column with multiple products
CN113614478B (zh) 2019-04-02 2023-11-17 科思创知识产权两合公司 干燥装置及其用途以及用于在使用该干燥装置的情况下制备异氰酸酯的方法
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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
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Also Published As

Publication number Publication date
BR0304624A (pt) 2004-08-31
EP1413571A1 (en) 2004-04-28
KR20040035567A (ko) 2004-04-29
KR101020373B1 (ko) 2011-03-08
ATE337297T1 (de) 2006-09-15
CN1290824C (zh) 2006-12-20
JP2004143173A (ja) 2004-05-20
US20040118672A1 (en) 2004-06-24
CA2445209A1 (en) 2004-04-22
TW200418767A (en) 2004-10-01
EP1413571B1 (en) 2006-08-23
TWI280956B (en) 2007-05-11
ES2271171T3 (es) 2007-04-16
US7108770B2 (en) 2006-09-19
JP4360878B2 (ja) 2009-11-11
DE60214195T2 (de) 2007-10-04
DE60214195D1 (de) 2006-10-05
CN1496978A (zh) 2004-05-19

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