CN1659201A - 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 Download PDFInfo
- Publication number
- CN1659201A CN1659201A CN03813289.3A CN03813289A CN1659201A CN 1659201 A CN1659201 A CN 1659201A CN 03813289 A CN03813289 A CN 03813289A CN 1659201 A CN1659201 A CN 1659201A
- Authority
- CN
- China
- Prior art keywords
- melamine
- gas
- line
- column
- reaction
- 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.)
- Granted
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 70
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 70
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000004202 carbamide Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 28
- 238000000926 separation method Methods 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000000197 pyrolysis Methods 0.000 claims abstract description 21
- 238000011282 treatment Methods 0.000 claims abstract description 15
- 239000007791 liquid phase Substances 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229910001868 water Inorganic materials 0.000 claims description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 14
- 229910021529 ammonia Inorganic materials 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 9
- 238000000859 sublimation Methods 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 239000008246 gaseous mixture Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 42
- 239000012071 phase Substances 0.000 description 14
- 239000000243 solution Substances 0.000 description 13
- 238000010791 quenching Methods 0.000 description 10
- 239000007792 gaseous phase Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000000746 purification Methods 0.000 description 6
- 230000000171 quenching effect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- YZEZMSPGIPTEBA-UHFFFAOYSA-N 2-n-(4,6-diamino-1,3,5-triazin-2-yl)-1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(NC=2N=C(N)N=C(N)N=2)=N1 YZEZMSPGIPTEBA-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 239000002638 heterogeneous catalyst Substances 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- YSRVJVDFHZYRPA-UHFFFAOYSA-N melem Chemical compound NC1=NC(N23)=NC(N)=NC2=NC(N)=NC3=N1 YSRVJVDFHZYRPA-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- WNVQBUHCOYRLPA-UHFFFAOYSA-N triuret Chemical compound NC(=O)NC(=O)NC(N)=O WNVQBUHCOYRLPA-UHFFFAOYSA-N 0.000 description 1
Images
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)
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1659201A true CN1659201A (en) | 2005-08-24 |
CN1300122C CN1300122C (en) | 2007-02-14 |
Family
ID=11449893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB038132893A Expired - Lifetime CN1300122C (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) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102285929A (en) * | 2010-05-06 | 2011-12-21 | 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 | Low-energy-consumption process for the production of high-purity melamine, through the pyrolysis of urea, and relative equipment |
CN102946990A (en) * | 2010-06-24 | 2013-02-27 | 博里利斯阿格罗林茨三聚氰胺有限公司 | Horizontal high-pressure melamine reactor |
CN108602784A (en) * | 2016-02-19 | 2018-09-28 | 卡萨勒有限公司 | The method that high-pressure melamine equipment is transformed |
CN109761922A (en) * | 2017-11-09 | 2019-05-17 | 欧洲技术设于伊特根的三聚氰氨,卢森堡,分支机构 | Pass through the improved method and relevant apparatus of the pyrolysis production high-purity melamine of urea |
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 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1902163B (en) | 2004-02-20 | 2010-05-26 | 乌里阿·卡萨勒有限公司 | 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 |
US9869403B2 (en) | 2011-05-09 | 2018-01-16 | Hamilton Sundstrand Corporation | Valve having pressure-relieving vent passage |
HUE053647T2 (en) | 2015-04-23 | 2021-07-28 | Stamicarbon | Method and system for the integrated production of urea and melamine |
Family Cites Families (7)
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. |
EA003233B1 (en) * | 1998-11-13 | 2003-02-27 | Агролинц Меламин Гмбх | Method for producing pure melamine |
-
2002
- 2002-05-14 IT IT2002MI001026A patent/ITMI20021026A1/en unknown
-
2003
- 2003-04-29 WO PCT/EP2003/004556 patent/WO2003095516A1/en not_active Application Discontinuation
- 2003-04-29 CN CNB038132893A patent/CN1300122C/en not_active Expired - Lifetime
- 2003-04-29 EP EP03749861A patent/EP1504045A1/en not_active Withdrawn
- 2003-04-29 AU AU2003232234A patent/AU2003232234A1/en not_active Abandoned
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102285929A (en) * | 2010-05-06 | 2011-12-21 | 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 | Low-energy-consumption process for the production of high-purity melamine, through the pyrolysis of urea, and relative equipment |
CN102285929B (en) * | 2010-05-06 | 2014-11-05 | 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 | Low-energy-consumption process for the production of high-purity melamine, through the pyrolysis of urea, and relative equipment |
CN102946990A (en) * | 2010-06-24 | 2013-02-27 | 博里利斯阿格罗林茨三聚氰胺有限公司 | Horizontal high-pressure melamine reactor |
CN102946990B (en) * | 2010-06-24 | 2015-08-26 | 卡萨利股份公司 | Horizontal high-pressure melamine reactor |
CN108602784A (en) * | 2016-02-19 | 2018-09-28 | 卡萨勒有限公司 | The method that high-pressure melamine equipment is transformed |
CN108602784B (en) * | 2016-02-19 | 2022-03-25 | 卡萨勒有限公司 | Method for revamping a high-pressure melamine plant |
CN109761922A (en) * | 2017-11-09 | 2019-05-17 | 欧洲技术设于伊特根的三聚氰氨,卢森堡,分支机构 | Pass through the improved method and relevant apparatus of the pyrolysis production high-purity melamine of urea |
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 |
Also Published As
Publication number | Publication date |
---|---|
ITMI20021026A1 (en) | 2003-11-14 |
ITMI20021026A0 (en) | 2002-05-14 |
WO2003095516A1 (en) | 2003-11-20 |
AU2003232234A1 (en) | 2003-11-11 |
EP1504045A1 (en) | 2005-02-09 |
CN1300122C (en) | 2007-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
ASS | Succession or assignment of patent right |
Owner name: MELAMINE - LUXEMBOURG - BRANCH LOCATED IN ITGEN B Free format text: FORMER OWNER: EUROTECNICA GROUP S. A. Effective date: 20060609 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20060609 Address after: Swiss Yitegen Applicant after: EUROTECNICA MELAMINE Address before: Bienne Applicant before: EUROTECNICA Group S.A. |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210422 Address after: Swiss Wollerau Patentee after: Ouji melamine Co.,Ltd. Address before: Itgen, Switzerland Patentee before: EUROTECNICA MELAMINE |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20070214 |