AR050275A1 - Procedimiento a alta presion para la produccion de melamina pura en un reactor de sintesis vertical - Google Patents

Procedimiento a alta presion para la produccion de melamina pura en un reactor de sintesis vertical

Info

Publication number
AR050275A1
AR050275A1 ARP050103156A ARP050103156A AR050275A1 AR 050275 A1 AR050275 A1 AR 050275A1 AR P050103156 A ARP050103156 A AR P050103156A AR P050103156 A ARP050103156 A AR P050103156A AR 050275 A1 AR050275 A1 AR 050275A1
Authority
AR
Argentina
Prior art keywords
melamine
urea
reactor
reaction medium
synthesis reactor
Prior art date
Application number
ARP050103156A
Other languages
English (en)
Original Assignee
Ami Agrolinz Melamine Int Gmbh
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 filed Critical Ami Agrolinz Melamine Int Gmbh
Publication of AR050275A1 publication Critical patent/AR050275A1/es

Links

Classifications

    • 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

La presente se refiere a un procedimiento a alta presion para la produccion de melamina para mediante pirolisis de urea en un reactor de síntesis vertical, caracterizado porque el reactor de síntesis presenta tres etapas dispuestas verticalmente una sobre la otra, de modo que: a) en la primera etapa, la más superior, se aporta la parte más pequena de la cantidad total de urea al tubo central de un primer reactor de tanque y se forma un primer medio de reaccion que contiene melamina; b) en la segunda etapa, intermedia, se aporta el primer medio de reaccion que contiene melamina, así como la mayor parte de la cantidad total de urea al tubo central de un segundo reactor de tanque y se forma un segundo medio de reaccion que contiene melamina, que c) en la tercera etapa, la más inferior, se aporta el segundo medio de reaccion que contiene melamina a un reactor de flujo piston vertical y se forma una masa fundida de melamina bruta, que a continuacion se procesa de cualquier forma y se obtiene melamina pura. Con esto es posible alcanzar una conversion de urea uniforme, un aporte de calor de reaccion que protege y disminuye la corrosion y un control optimo de la reaccion, así como una reaccion completa de la urea en el reactor de síntesis de melamina. En comparacion con otros procedimientos de melamina da como resultado una síntesis de melamina más compacta, más economica y más eficaz.
ARP050103156A 2004-07-29 2005-07-28 Procedimiento a alta presion para la produccion de melamina pura en un reactor de sintesis vertical AR050275A1 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
AR050275A1 true AR050275A1 (es) 2006-10-11

Family

ID=35456896

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP050103156A AR050275A1 (es) 2004-07-29 2005-07-28 Procedimiento a alta presion para la produccion de melamina pura en un reactor de sintesis vertical

Country Status (10)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098516A1 (en) 2008-03-04 2009-09-09 Urea Casale S.A. Process for the production of high purity melamine from urea
EP2119710A1 (en) * 2008-05-14 2009-11-18 Urea Casale S.A. Process for producing high-quality melamine from urea
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 (en) 2010-06-24 2011-12-28 Borealis Agrolinz Melamine GmbH Horizontal high-pressure melamine reactor
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 (en) 2014-02-18 2015-08-19 Casale Sa Combined reactor for high-pressure synthesis of melamine
CN104258795B (zh) * 2014-09-24 2015-12-30 中国纺织科学研究院 交换反应系统、包含其的改性聚酯生产系统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系统
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系统及其工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1292427B1 (it) 1997-06-27 1999-02-08 Eurotecnica Contractors And En Procedimento e apparecchiatura per la produzione di melammina
AT410210B (de) 2000-08-07 2003-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin
AT409489B (de) 2000-10-20 2002-08-26 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin

Also Published As

Publication number Publication date
EP1781626A2 (de) 2007-05-09
US7375223B2 (en) 2008-05-20
AT414239B (de) 2006-10-15
MY140845A (en) 2010-01-29
TW200621358A (en) 2006-07-01
WO2006013079A3 (de) 2006-03-16
CN101023065A (zh) 2007-08-22
JP2008508226A (ja) 2008-03-21
RU2006145379A (ru) 2008-09-10
ATA12982004A (de) 2006-01-15
WO2006013079A2 (de) 2006-02-09
US20070232801A1 (en) 2007-10-04

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