AU2003232234A1 - Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step - Google Patents

Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step

Info

Publication number
AU2003232234A1
AU2003232234A1 AU2003232234A AU2003232234A AU2003232234A1 AU 2003232234 A1 AU2003232234 A1 AU 2003232234A1 AU 2003232234 A AU2003232234 A AU 2003232234A AU 2003232234 A AU2003232234 A AU 2003232234A AU 2003232234 A1 AU2003232234 A1 AU 2003232234A1
Authority
AU
Australia
Prior art keywords
melamine
urea
free
gas
production
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2003232234A
Inventor
Sergio Noe'
Massimo Parmegiani
Roberto Santucci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eurotecnica Group SA
Original Assignee
Eurotecnica Group SA
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 Group SA filed Critical Eurotecnica Group SA
Publication of AU2003232234A1 publication Critical patent/AU2003232234A1/en
Abandoned legal-status Critical Current

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)
AU2003232234A 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 Abandoned AU2003232234A1 (en)

Applications Claiming Priority (3)

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
ITMI2002A001026 2002-05-14
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

Publications (1)

Publication Number Publication Date
AU2003232234A1 true AU2003232234A1 (en) 2003-11-11

Family

ID=11449893

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003232234A Abandoned 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

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 (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1716111B2 (en) 2004-02-20 2022-06-08 Casale Sa Integrated process for urea and melamine production
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

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.
JP2002529539A (en) * 1998-11-13 2002-09-10 アグロリンツ メラミン ゲゼルシャフト ミット ベシュレンクテル ハフツング How to make pure melamine

Also Published As

Publication number Publication date
WO2003095516A1 (en) 2003-11-20
ITMI20021026A0 (en) 2002-05-14
EP1504045A1 (en) 2005-02-09
CN1300122C (en) 2007-02-14
ITMI20021026A1 (en) 2003-11-14
CN1659201A (en) 2005-08-24

Similar Documents

Publication Publication Date Title
AU2003281180A1 (en) Porous semiconductor and process for producing the same
AU2003294200A1 (en) Ternary and quaternary nanocrystals, processes for their production and uses thereof
AU2003227481A1 (en) Solid electrolyte, photoelectric converter and process for producing the same
AU2003248074A1 (en) Composite nanoparticle and process for producing the same
EP1535657A4 (en) Modified substrate and process for producing modified substrate
AU2003292075A1 (en) Photovoltaic component and production method therefor
AU2003252473A1 (en) Composite dispersion and process for producing the same
AU2003242146A1 (en) Method of storing hydrogen, hydrogen inclusion compound and process for producing the same
AU2003284575A1 (en) Fine composite particle and process for producing the same
AU2003262002A1 (en) Organopolysiloxane-modified polysaccharide and process for producing the same
AU2002314112A1 (en) Dietary supplements from wine vinasses and relevant production process
EP1653312A4 (en) Semiconductor production system and semiconductor production process
AU2003207244A1 (en) Amino acid powder and process for producing the same
AU2003266101A1 (en) Membrane module for the separation of hydrogen and method for the production thereof
AU2003252471A1 (en) Composite and process for producing the same
AU2003232234A1 (en) Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step
ZA200309302B (en) Process for production of formed honeycomb body, and honeycomb structure.
AU2003274066A1 (en) Dye-sensitised photovoltaic cells, method for the production of said photovoltaic cells and use thereof
EP1544291A4 (en) Novel process for producing antibody enzyme, novel antibody enzyme and utilization thereof
AU2003259556A1 (en) Compound semiconductor particles and production process therefor
EP1479776A4 (en) Cell extract for cell-free protein synthesis and process for producing the same
AU2003214140A1 (en) Process for the production of melamine from urea, and particularly for the separation of melamine from off-gas
AU2003303348A1 (en) Method for the production of a screw, and screw produced according to said method
PL376998A1 (en) Cellulosic product and process for its production
AU2003202566A1 (en) Granulated product and process to prepare the same

Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase
TH Corrigenda

Free format text: IN VOL 18, NO 2, PAGE(S) 511 UNDER THE HEADING APPLICATIONS OPI - NAME INDEX UNDER THE NAME EUROTECNICA GROUP S.A., APPLICATION NO. 2003232234, UNDER INID(43) CORRECT THE PUBLICATION DATE TO READ 24.11.2003