WO2011018443A2 - Verfahren zur herstellung von diisocyanaten durch gasphasenphosgenierung - Google Patents
Verfahren zur herstellung von diisocyanaten durch gasphasenphosgenierung Download PDFInfo
- Publication number
- WO2011018443A2 WO2011018443A2 PCT/EP2010/061574 EP2010061574W WO2011018443A2 WO 2011018443 A2 WO2011018443 A2 WO 2011018443A2 EP 2010061574 W EP2010061574 W EP 2010061574W WO 2011018443 A2 WO2011018443 A2 WO 2011018443A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas phase
- hydrogen chloride
- phase phosgenation
- chlorine
- heat transfer
- Prior art date
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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
- C01B7/03—Preparation from chlorides
- C01B7/04—Preparation of chlorine from hydrogen chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/703—Isocyanates or isothiocyanates transformed in a latent form by physical means
- C08G18/705—Dispersions of isocyanates or isothiocyanates in a liquid medium
- C08G18/707—Dispersions of isocyanates or isothiocyanates in a liquid medium the liquid medium being a compound containing active hydrogen not comprising water
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Definitions
- the invention relates to a process for the preparation of diisocyanates by gas-phase phosgenation.
- Diisocyanates are predominantly produced by phosgenation of the corresponding amines. This can be carried out both in the liquid and in the gas phase.
- the gas phase phosgenation has in the technical implementation of the liquid phase phosgenation a number of advantages, in particular a higher selectivity, a lower HoId-up of toxic phosgene and lower investment and energy costs.
- the two reactant streams, an amine-containing and a phosgene-containing reactant stream if they are not already in the gas phase, evaporated and brought to the reaction temperature of the gas phase phosgenation, from about 300 to 400 0 C.
- the solution consists in a process for the preparation of diisocyanates by gas phase phosgenation starting from a reactant stream containing the corresponding diamines and a phosgene, wherein the reactant streams are separately transferred into the gas phase and preheated to the reaction temperature of the gas phase phosgenation, characterized in that the Waste heat from a plant for the production of chlorine is used by heterogeneously catalyzed oxidation of hydrogen chloride by the Deacon process.
- the waste heat from a plant for the production of chlorine by heterogeneously catalyzed oxidation of hydrogen chloride can be used by the so-called Deacon process to the educt streams for the gas phase phosgenation for the production of diisocyanates to the required reaction temperature to bring from about 300 to 400 0 C.
- the thermal coupling according to the invention of the Deacon process and the gas phase phosgenation is a technically simple, elegant solution because the temperature levels are similar, that is, the heat of reaction of the Deacon process can be used directly for heating the reactant streams for the gas phase phosgenation to diisocyanates.
- a material coupling is possible:
- the apparatus for example, when using molten salts as a heat carrier, be carried out in a lower pressure stage.
- the waste heat that is to say the heat of reaction resulting from the heterogeneously catalyzed oxidation of hydrogen chloride from a Deacon process, is used for overheating and, if appropriate, evaporation of the educt streams of a gas phase phosgenation.
- the invention is not limited to the specific implementation of the Deacon process; in particular, this can be carried out on a fixed or fluidized bed.
- the amine preferably has a temperature in the range of 200 to 400 0 C.
- the pressure of the added amine is preferably in the range between 0.05 to 3 bar absolute.
- the temperature of the added phosgene is preferably in the range of 250 to 450 ° C.
- the phosgene is usually heated prior to addition in a manner known to those skilled in the art.
- an electric heating or a direct or indirect heating by combustion of a fuel is used.
- the fuels used are usually fuel gases, for example natural gas.
- By lowering the boiling temperature by lowering the pressure of the amine is also a heating, for Example by water vapor, possible.
- the pressure of the water vapor is selected.
- a suitable vapor pressure of the water vapor is for example in the range of 40 to 100 bar. This results in a temperature of the water vapor in the range of 250 to 31 1 ° C.
- the evaporation of the phosgene is generally carried out at much lower temperatures. For this reason, water vapor can generally be used to evaporate the phosgene.
- the necessary overheating of the phosgene to heat it to reaction temperature is generally possible only by electrical heating or direct or indirect heating by combustion of a fuel.
- the phosgene-containing reactant stream generally has a high phosgene content of almost 100 wt .-%, and in addition residues of in particular nickel and chlorine.
- the diamine stream containing diamines contains the diamines corresponding to the desired diisocyanate target product.
- the diamines must be vaporizable without decomposition. It is possible to use aliphatic, cycloaliphatic or aromatic diamines, preferably aliphatic diamines.
- Both the phosgene and the diamines-containing educt stream may each be diluted with an inert gas.
- Diamines which are used in the process according to the invention for the reaction to give the corresponding isocyanates are those in which the diamine, the corresponding intermediates and the corresponding isocyanates are present in gaseous form under the reaction conditions chosen. Preference is given to diamines which, during the duration of the reaction under the reaction conditions, amount to at most 2 Mole%, more preferably at most 1 mole% and most preferably at most 0.5 mole% decompose. Particularly suitable here are diamines, in particular diamines, based on aliphatic or cycloaliphatic hydrocarbons having 2 to 18 carbon atoms.
- 1,6-diaminohexane 1,5-diaminopentane
- 1,3-bis (aminomethyl) cyclohexane 1,3-bis (aminomethyl) cyclohexane
- IPDA 1-amino-3,3,5-trimethyl-5-amino-methylcyclohexane
- HDA 1,6-diaminohexane
- aromatic amines can be used for the process according to the invention, which can be converted into the gas phase without significant decomposition.
- TDA toluenediamine
- 2,6-isomer or as a mixture thereof, for example as 80:20 to 65:35 (mol / mol) -
- MDA Methylene (diphenyldiamine)
- isomeric mixtures thereof Preferred among these are the diamines, more preferably 2,4- and / or 2,6-TDA or 2,4'- and / or 4,4'-MDA.
- the invention is not limited to the specific implementation of the gas phase phosgenation. This can advantageously be carried out as described in EP 08 168 617.2 by adding the educts to the reactor via an ejector or also by cooling the reaction gas mixture of the gas phase phosgenation in a quench to add a liquid quench medium, as described in EP 08 168 617.2 ,
- the two feed streams are preferred, that is, the diamine and the phosgene-containing feed stream to a temperature in the range of about 300 to 400 0 C, preferably to a temperature in the range of about 330-380 0 C, preheated.
- reaction gas mixture of the heterogeneously catalyzed oxidation of hydrogen chloride by the Deacon process can be used directly as a heat transfer medium for indirect heat transfer to the educt streams for the gas phase phosgenation.
- the temperature of the reaction gas mixture of the Deacon process for heating a secondary heat carrier, in particular a molten salt or water vapor, and to heat the starting materials for the gas phase phosgenation with the secondary heat carrier.
- a secondary heat carrier in particular a molten salt or water vapor
- the preheating and, if necessary, the conversion of the educt streams into the gas phase can be carried out in conventional evaporator constructions, such as falling film, thin film or climbing film evaporators.
- the preheating and, if necessary, the transfer to the gas phase of the reactant streams in each case in a tube bundle heat exchanger wherein preferably the respective educt flow is passed through the tubes of the tube bundle heat exchanger and the reaction gas mixture from the Deacon process or a secondary heat carrier through the shell space around the pipes.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/389,955 US8716517B2 (en) | 2009-08-11 | 2010-08-10 | Method for producing diisocyanates by gas-phase phosgenation |
EP10742484A EP2464625A2 (de) | 2009-08-11 | 2010-08-10 | Verfahren zur herstellung von diisocyanaten durch gasphasenphosgenierung |
BR112012002910A BR112012002910A2 (pt) | 2009-08-11 | 2010-08-10 | processo para preparar os diisocianatos através da fosgenação em fase gasosa |
JP2012524215A JP5666584B2 (ja) | 2009-08-11 | 2010-08-10 | 気相ホスゲン化によるジイソシアネートの製造方法 |
CN201080035435XA CN102471243A (zh) | 2009-08-11 | 2010-08-10 | 通过气相光气化制备二异氰酸酯的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09167604.9 | 2009-08-11 | ||
EP09167604 | 2009-08-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011018443A2 true WO2011018443A2 (de) | 2011-02-17 |
WO2011018443A3 WO2011018443A3 (de) | 2011-04-21 |
Family
ID=43426102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/061574 WO2011018443A2 (de) | 2009-08-11 | 2010-08-10 | Verfahren zur herstellung von diisocyanaten durch gasphasenphosgenierung |
Country Status (7)
Country | Link |
---|---|
US (1) | US8716517B2 (de) |
EP (1) | EP2464625A2 (de) |
JP (1) | JP5666584B2 (de) |
KR (1) | KR20120041257A (de) |
CN (1) | CN102471243A (de) |
BR (1) | BR112012002910A2 (de) |
WO (1) | WO2011018443A2 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8969615B2 (en) | 2011-03-31 | 2015-03-03 | Basf Se | Process for preparing isocyanates |
US8981145B2 (en) | 2010-03-18 | 2015-03-17 | Basf Se | Process for preparing isocyanates |
US9321720B2 (en) | 2010-10-14 | 2016-04-26 | Basf Se | Process for preparing isocyanates |
WO2022106716A1 (en) | 2020-11-23 | 2022-05-27 | Basf Se | Process for producing isocyanates |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10590069B2 (en) * | 2017-10-06 | 2020-03-17 | International Business Machines Corporation | Pinene-derived diisocyanates |
CN112724045B (zh) * | 2021-01-05 | 2022-01-28 | 安徽东至广信农化有限公司 | 一种制备二异氰酸酯的方法及其装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959202A (en) | 1989-05-31 | 1990-09-25 | Medalert Incorporated | Recovery of chlorine from hydrogen chloride by carrier catalyst process |
WO1997011026A1 (en) | 1995-09-21 | 1997-03-27 | University Of Southern California | Exothermic two-stage process for catalytic oxidation of hydrogen chloride |
WO2007085476A2 (de) | 2006-01-27 | 2007-08-02 | Basf Se | Verfahren zur herstellung von chlor |
EP1935875A1 (de) | 2006-12-13 | 2008-06-25 | Bayer MaterialScience AG | Verfahren zur Herstellung von Isocyanaten in der Gasphase |
WO2008125236A2 (de) | 2007-04-17 | 2008-10-23 | Bayer Materialscience Ag | Wärmeintegration in einem deacon-prozess |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4785515B2 (ja) * | 2005-12-08 | 2011-10-05 | 住友化学株式会社 | 塩素の製造方法 |
US20070261437A1 (en) * | 2006-05-12 | 2007-11-15 | Boonstra Eric F | Enhanced process for the purification of anhydrous hydrogen chloride gas |
DE102006022447A1 (de) * | 2006-05-13 | 2007-11-15 | Bayer Materialscience Ag | Verfahren zur gekoppelten Herstellung von Chlor und Isocyanaten |
EP2079684B1 (de) | 2006-11-07 | 2016-06-22 | Basf Se | Verfahren zur herstellung von isocyanaten |
DE102006058633A1 (de) * | 2006-12-13 | 2008-06-19 | Bayer Materialscience Ag | Verfahren zur Herstellung von Isocyanaten in der Gasphase |
DE102007020444A1 (de) * | 2007-04-27 | 2008-11-06 | Bayer Materialscience Ag | Verfahren zur Oxidation eines Chlorwasserstoffenthaltenden Gasgemisches |
JP2010536911A (ja) | 2007-08-30 | 2010-12-02 | 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法 |
WO2009027234A1 (de) | 2007-08-30 | 2009-03-05 | Basf Se | Verfahren zur herstellung von isocyanaten |
BRPI0816892A2 (pt) | 2007-09-19 | 2015-03-24 | Basf Se | Processo para preparar diisocianatos |
PL2307356T3 (pl) | 2008-07-23 | 2012-11-30 | Basf Se | Sposób wytwarzania izocyjanianów |
PT2323973E (pt) | 2008-08-07 | 2012-05-07 | Basf Se | Processo para a produção de isocianatos aromáticos |
WO2010043532A1 (de) | 2008-10-15 | 2010-04-22 | Basf Se | Verfahren zur herstellung von isocyanaten |
WO2010052230A2 (de) | 2008-11-07 | 2010-05-14 | Basf Se | Verfahren zur herstellung von isocyanaten |
PT2367783E (pt) | 2008-11-19 | 2013-03-11 | Basf Se | Processo para a produção de um isocianato |
EP2373616B1 (de) | 2008-12-03 | 2014-10-22 | Basf Se | Verfahren zur herstellung von isocyanaten |
JP5771535B2 (ja) | 2009-03-06 | 2015-09-02 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | イソシアネートの製造方法および製造装置 |
US9006481B2 (en) | 2009-03-20 | 2015-04-14 | Basf Se | Process and apparatus for preparing isocyanates |
JP5699128B2 (ja) | 2009-04-08 | 2015-04-08 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | イソシアネートの製造方法 |
-
2010
- 2010-08-10 JP JP2012524215A patent/JP5666584B2/ja not_active Expired - Fee Related
- 2010-08-10 BR BR112012002910A patent/BR112012002910A2/pt not_active IP Right Cessation
- 2010-08-10 EP EP10742484A patent/EP2464625A2/de not_active Withdrawn
- 2010-08-10 CN CN201080035435XA patent/CN102471243A/zh active Pending
- 2010-08-10 WO PCT/EP2010/061574 patent/WO2011018443A2/de active Application Filing
- 2010-08-10 US US13/389,955 patent/US8716517B2/en not_active Expired - Fee Related
- 2010-08-10 KR KR1020127006303A patent/KR20120041257A/ko not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4959202A (en) | 1989-05-31 | 1990-09-25 | Medalert Incorporated | Recovery of chlorine from hydrogen chloride by carrier catalyst process |
WO1997011026A1 (en) | 1995-09-21 | 1997-03-27 | University Of Southern California | Exothermic two-stage process for catalytic oxidation of hydrogen chloride |
WO2007085476A2 (de) | 2006-01-27 | 2007-08-02 | Basf Se | Verfahren zur herstellung von chlor |
EP1935875A1 (de) | 2006-12-13 | 2008-06-25 | Bayer MaterialScience AG | Verfahren zur Herstellung von Isocyanaten in der Gasphase |
WO2008125236A2 (de) | 2007-04-17 | 2008-10-23 | Bayer Materialscience Ag | Wärmeintegration in einem deacon-prozess |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8981145B2 (en) | 2010-03-18 | 2015-03-17 | Basf Se | Process for preparing isocyanates |
US9321720B2 (en) | 2010-10-14 | 2016-04-26 | Basf Se | Process for preparing isocyanates |
US8969615B2 (en) | 2011-03-31 | 2015-03-03 | Basf Se | Process for preparing isocyanates |
US9302983B2 (en) | 2011-03-31 | 2016-04-05 | Basf Se | Process for preparing isocyanates |
WO2022106716A1 (en) | 2020-11-23 | 2022-05-27 | Basf Se | Process for producing isocyanates |
Also Published As
Publication number | Publication date |
---|---|
KR20120041257A (ko) | 2012-04-30 |
JP2013501747A (ja) | 2013-01-17 |
BR112012002910A2 (pt) | 2016-04-05 |
WO2011018443A3 (de) | 2011-04-21 |
US20120142959A1 (en) | 2012-06-07 |
EP2464625A2 (de) | 2012-06-20 |
JP5666584B2 (ja) | 2015-02-12 |
CN102471243A (zh) | 2012-05-23 |
US8716517B2 (en) | 2014-05-06 |
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