ITMI20021026A1 - MELAMINE PRODUCTION PROCESS FROM UREA AND PARTICULARLY TO OBTAIN MELAMINE-FREE OFF-GAS IN THE FIRST SEPARATION STAGE - Google Patents

MELAMINE PRODUCTION PROCESS FROM UREA AND PARTICULARLY TO OBTAIN MELAMINE-FREE OFF-GAS IN THE FIRST SEPARATION STAGE

Info

Publication number
ITMI20021026A1
ITMI20021026A1 IT2002MI001026A ITMI20021026A ITMI20021026A1 IT MI20021026 A1 ITMI20021026 A1 IT MI20021026A1 IT 2002MI001026 A IT2002MI001026 A IT 2002MI001026A IT MI20021026 A ITMI20021026 A IT MI20021026A IT MI20021026 A1 ITMI20021026 A1 IT MI20021026A1
Authority
IT
Italy
Prior art keywords
melamine
urea
free
gas
production process
Prior art date
Application number
IT2002MI001026A
Other languages
Italian (it)
Inventor
Sergio Noe
Massimo Parmegiani
Roberto Santucci
Original Assignee
Eurotecnica Dev & Licensing S
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 Eurotecnica Dev & Licensing S filed Critical Eurotecnica Dev & Licensing S
Priority to IT2002MI001026A priority Critical patent/ITMI20021026A1/en
Publication of ITMI20021026A0 publication Critical patent/ITMI20021026A0/en
Priority to EP03749861A priority patent/EP1504045A1/en
Priority to CNB038132893A priority patent/CN1300122C/en
Priority to AU2003232234A priority patent/AU2003232234A1/en
Priority to PCT/EP2003/004556 priority patent/WO2003095516A1/en
Publication of ITMI20021026A1 publication Critical patent/ITMI20021026A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • 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
    • 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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
    • C08G12/32—Melamines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treating Waste Gases (AREA)
IT2002MI001026A 2002-05-14 2002-05-14 MELAMINE PRODUCTION PROCESS FROM UREA AND PARTICULARLY TO OBTAIN MELAMINE-FREE OFF-GAS IN THE FIRST SEPARATION STAGE ITMI20021026A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT2002MI001026A ITMI20021026A1 (en) 2002-05-14 2002-05-14 MELAMINE PRODUCTION PROCESS FROM UREA AND PARTICULARLY TO OBTAIN MELAMINE-FREE OFF-GAS IN THE FIRST SEPARATION STAGE
EP03749861A EP1504045A1 (en) 2002-05-14 2003-04-29 Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step
CNB038132893A CN1300122C (en) 2002-05-14 2003-04-29 Process for the production of melamine from urea, in particular for obtaining melamine-free off-gas in the first separation step
AU2003232234A AU2003232234A1 (en) 2002-05-14 2003-04-29 Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step
PCT/EP2003/004556 WO2003095516A1 (en) 2002-05-14 2003-04-29 Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2002MI001026A ITMI20021026A1 (en) 2002-05-14 2002-05-14 MELAMINE PRODUCTION PROCESS FROM UREA AND PARTICULARLY TO OBTAIN MELAMINE-FREE OFF-GAS IN THE FIRST SEPARATION STAGE

Publications (2)

Publication Number Publication Date
ITMI20021026A0 ITMI20021026A0 (en) 2002-05-14
ITMI20021026A1 true ITMI20021026A1 (en) 2003-11-14

Family

ID=11449893

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2002MI001026A ITMI20021026A1 (en) 2002-05-14 2002-05-14 MELAMINE PRODUCTION PROCESS FROM UREA AND PARTICULARLY TO OBTAIN MELAMINE-FREE OFF-GAS IN THE FIRST SEPARATION STAGE

Country Status (5)

Country Link
EP (1) EP1504045A1 (en)
CN (1) CN1300122C (en)
AU (1) AU2003232234A1 (en)
IT (1) ITMI20021026A1 (en)
WO (1) WO2003095516A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2344125C2 (en) 2004-02-20 2009-01-20 Уреа Касале С.А. Method and plant for combined production of carbamide and melamine
ITMI20082294A1 (en) * 2008-12-22 2010-06-23 Eurotecnica Melamine Luxemburg Zwe Igniederlassun IMPROVED PROCEDURE FOR THE PRODUCTION OF HIGH PURITY MELAMINE BY UREA PYROLYSIS
IT1400090B1 (en) 2010-05-06 2013-05-17 Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen LOW ENERGY CONSUMPTION PROCEDURE FOR THE PRODUCTION OF HIGH PURE MELAMINE THROUGH UREA PYROLYSIS, AND ITS EQUIPMENT
EP2399669A1 (en) * 2010-06-24 2011-12-28 Borealis Agrolinz Melamine GmbH Horizontal high-pressure melamine reactor
US9869403B2 (en) 2011-05-09 2018-01-16 Hamilton Sundstrand Corporation Valve having pressure-relieving vent passage
PL3286165T3 (en) 2015-04-23 2021-06-14 Stamicarbon B.V. Method and system for the integrated production of urea and melamine
EP3208264A1 (en) 2016-02-19 2017-08-23 Casale SA Method for revamping a high pressure melamine plant
CN109761922B (en) * 2017-11-09 2023-11-21 欧技三聚氰胺有限公司 Improved process for the production of melamine in high purity by pyrolysis of urea and related plant
CN110613952A (en) * 2019-11-06 2019-12-27 河南省中原大化集团有限责任公司 Novel crystallizer ammonia preparation device and ammonia preparation method
WO2025186482A2 (en) 2024-06-28 2025-09-12 Casale Sa A scrubbing section for offgas of a melamine plant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315442A (en) * 1964-10-05 1967-04-25 American Cyanamid Co Quenching of crude melamine gases
NL161750C (en) * 1968-11-16 1980-03-17 Stamicarbon Process for separating melamine from a gaseous reaction mixture of melamine, ammonia and carbon dioxide.
NL8201479A (en) * 1982-04-07 1983-11-01 Stamicarbon METHOD FOR PREPARING MELAMINE.
AT397214B (en) * 1992-03-30 1994-02-25 Chemie Linz Gmbh DEVICE FOR DEPOSITING MELAMINE
US5384404A (en) * 1993-11-05 1995-01-24 Lee; Jing M. Process for manufacturing melamine from urea
NL1003328C2 (en) * 1996-06-13 1997-12-17 Dsm Nv Process for preparing melamine.
CN1160342C (en) * 1998-11-13 2004-08-04 阿格罗林茨蜜胺有限公司 Method for producing pure molamine

Also Published As

Publication number Publication date
EP1504045A1 (en) 2005-02-09
CN1300122C (en) 2007-02-14
ITMI20021026A0 (en) 2002-05-14
WO2003095516A1 (en) 2003-11-20
AU2003232234A1 (en) 2003-11-11
CN1659201A (en) 2005-08-24

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