WO2006013079A3 - Hochdruckverfahren zur herstellung von reinem melamin - Google Patents

Hochdruckverfahren zur herstellung von reinem melamin Download PDF

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Publication number
WO2006013079A3
WO2006013079A3 PCT/EP2005/008323 EP2005008323W WO2006013079A3 WO 2006013079 A3 WO2006013079 A3 WO 2006013079A3 EP 2005008323 W EP2005008323 W EP 2005008323W WO 2006013079 A3 WO2006013079 A3 WO 2006013079A3
Authority
WO
WIPO (PCT)
Prior art keywords
melamine
urea
reactor
reaction medium
synthesis reactor
Prior art date
Application number
PCT/EP2005/008323
Other languages
English (en)
French (fr)
Other versions
WO2006013079A2 (de
Inventor
Di Faramarz Bairamijamal
Original Assignee
Ami Agrolinz Melamine Int Gmbh
Di Faramarz Bairamijamal
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 Ami Agrolinz Melamine Int Gmbh, Di Faramarz Bairamijamal filed Critical Ami Agrolinz Melamine Int Gmbh
Priority to EP05768190A priority Critical patent/EP1781626A2/de
Priority to US11/632,246 priority patent/US7375223B2/en
Priority to JP2007523034A priority patent/JP2008508226A/ja
Publication of WO2006013079A2 publication Critical patent/WO2006013079A2/de
Publication of WO2006013079A3 publication Critical patent/WO2006013079A3/de

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40—Nitrogen atoms
    • C07D251/54—Three nitrogen atoms
    • C07D251/56—Preparation of melamine
    • C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
    • B01J10/005—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor carried out at high temperatures in the presence of a molten material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1862—Stationary reactors having moving elements inside placed in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1868—Stationary reactors having moving elements inside resulting in a loop-type movement
    • B01J19/1875—Stationary reactors having moving elements inside resulting in a loop-type movement internally, i.e. the mixture circulating inside the vessel such that the upwards stream is separated physically from the downwards stream(s)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1887—Stationary reactors having moving elements inside forming a thin film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/245—Stationary reactors without moving elements inside placed in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2455—Stationary reactors without moving elements inside provoking a loop type movement of the reactants
    • B01J19/246—Stationary reactors without moving elements inside provoking a loop type movement of the reactants internally, i.e. the mixture circulating inside the vessel such that the upward stream is separated physically from the downward stream(s)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/247—Suited for forming thin films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04—Pressure vessels, e.g. autoclaves
    • B01J3/042—Pressure vessels, e.g. autoclaves in the form of a tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00081—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00162—Controlling or regulating processes controlling the pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00164—Controlling or regulating processes controlling the flow
    • 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
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Die Erfindung betrifft ein Hochdruckverfahren zur Herstellung von reinem Melamin durch Pyrolyse von Harnstoff in einem vertikalen Synthesereaktor, dadurch gekennzeichnet, dass der Synthesereaktor drei vertikal übereinander angeordnete Stufen aufweist, wobei a) in der ersten, obersten Stufe der kleinere Teil der Gesamtharnstoffmenge in das Zentralrohr eines ersten Tankreaktors eingebracht wird und ein erstes melaminhältiges Reaktionsmedium gebildet wird, b) in der zweiten, mittleren Stufe das erste melaminhältige Reaktionsmedium sowie der größere Teil der Gesamtharnstoffmenge in das Zentralrohr eines zweiten Tankreaktors eingebracht wird und ein zweites melaminhältiges Reaktionsmedium gebildet wird, worauf c) in der dritten, untersten Stufe das zweite melaminhältige Reaktionsmedium in einen vertikalen Strömungsrohrreaktor eingebracht wird und eine Rohmelaminschmelze gebildet wird, welche anschließend in beliebiger Weise aufgearbeitet und reines Melamin erhalten wird. Damit ist es möglich, einen gleichmäßigeren Harnstoffumsatz, eine schonendere und korrosionsmindernde Zufuhr der Reaktionswärme und eine optimale Reaktionsführung sowie restloses Ausreagieren des Harnstoffes im Melaminsynthesereaktor zu erreichen. Im Vergleich zu anderen Melaminverfahren ergibt sich eine kompaktere, kostengünstigere und effizientere Melaminsynthese.
PCT/EP2005/008323 2004-07-29 2005-07-27 Hochdruckverfahren zur herstellung von reinem melamin WO2006013079A2 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05768190A EP1781626A2 (de) 2004-07-29 2005-07-27 Hochdruckverfahren zur herstellung von reinem melamin
US11/632,246 US7375223B2 (en) 2004-07-29 2005-07-27 High pressure method for producing pure melamine in a vertical synthesis reactor
JP2007523034A JP2008508226A (ja) 2004-07-29 2005-07-27 縦型合成リアクタにおいて、純粋なメラミンを生成するための高圧法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0129804A AT414239B (de) 2004-07-29 2004-07-29 Hochdruckverfahren zur herstellung von reinem melamin
ATA1298/2004 2004-07-29

Publications (2)

Publication Number Publication Date
WO2006013079A2 WO2006013079A2 (de) 2006-02-09
WO2006013079A3 true WO2006013079A3 (de) 2006-03-16

Family

ID=35456896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/008323 WO2006013079A2 (de) 2004-07-29 2005-07-27 Hochdruckverfahren zur herstellung von reinem melamin

Country Status (10)

Country Link
US (1) US7375223B2 (de)
EP (1) EP1781626A2 (de)
JP (1) JP2008508226A (de)
CN (1) CN101023065A (de)
AR (1) AR050275A1 (de)
AT (1) AT414239B (de)
MY (1) MY140845A (de)
RU (1) RU2006145379A (de)
TW (1) TW200621358A (de)
WO (1) WO2006013079A2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098516A1 (de) * 2008-03-04 2009-09-09 Urea Casale S.A. Verfahren zur Herstellung hochreinen Melamins aus Harnstoff
EP2119710A1 (de) * 2008-05-14 2009-11-18 Urea Casale S.A. Verfahren zur Herstellung von Hochqualitätsmelamin aus Harnstoff
IT1391372B1 (it) * 2008-10-07 2011-12-13 Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen Procedimento e apparecchiatura per la produzione di melammina da urea
EP2399669A1 (de) 2010-06-24 2011-12-28 Borealis Agrolinz Melamine GmbH Horizontaler Hochdruck-Melamin-Reaktor
CN102295615B (zh) * 2011-07-14 2013-10-16 山东大学 一种低温合成三聚氰胺的方法
EP2907567A1 (de) * 2014-02-18 2015-08-19 Casale Sa Kombinierter Reaktor für Hochdrucksynthese von Melamin
CN104258795B (zh) * 2014-09-24 2015-12-30 中国纺织科学研究院 交换反应***、包含其的改性聚酯生产***及改性聚酯生产方法
CN107469736A (zh) * 2017-10-12 2017-12-15 重庆农药化工（集团）有限公司 可调节反应压力的反应釜及可调压反应釜***
IT201800007993A1 (it) * 2018-08-09 2020-02-09 Greenbone Ortho Srl Impianto finalizzato alla trasformazione chimica di materiali nello stato 3d
CN112844273A (zh) * 2019-11-12 2021-05-28 中国石油天然气股份有限公司 一种制备聚异丁烯马来酸酐的装置
CN111943897A (zh) * 2020-07-29 2020-11-17 尹明大 高压合成低压气相淬冷法的三聚氰胺生产***及其工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999000374A1 (en) * 1997-06-27 1999-01-07 Eurotecnica Development & Licensing S.R.L. Process and apparatus for melamine manufacture
AT410210B (de) * 2000-08-07 2003-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409489B (de) 2000-10-20 2002-08-26 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999000374A1 (en) * 1997-06-27 1999-01-07 Eurotecnica Development & Licensing S.R.L. Process and apparatus for melamine manufacture
AT410210B (de) * 2000-08-07 2003-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin

Also Published As

Publication number Publication date
US20070232801A1 (en) 2007-10-04
TW200621358A (en) 2006-07-01
MY140845A (en) 2010-01-29
AT414239B (de) 2006-10-15
EP1781626A2 (de) 2007-05-09
CN101023065A (zh) 2007-08-22
WO2006013079A2 (de) 2006-02-09
US7375223B2 (en) 2008-05-20
AR050275A1 (es) 2006-10-11
RU2006145379A (ru) 2008-09-10
ATA12982004A (de) 2006-01-15
JP2008508226A (ja) 2008-03-21

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