CN109761922B - 通过脲的热解生产高纯度三聚氰胺的改进方法和相关装置 - Google Patents
通过脲的热解生产高纯度三聚氰胺的改进方法和相关装置 Download PDFInfo
- Publication number
- CN109761922B CN109761922B CN201811325913.5A CN201811325913A CN109761922B CN 109761922 B CN109761922 B CN 109761922B CN 201811325913 A CN201811325913 A CN 201811325913A CN 109761922 B CN109761922 B CN 109761922B
- Authority
- CN
- China
- Prior art keywords
- reactor
- melamine
- stream
- ammonia
- urea
- 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.)
- Active
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 88
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 88
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000004202 carbamide Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000010926 purge Methods 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims abstract description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 178
- 229910021529 ammonia Inorganic materials 0.000 claims description 86
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 description 101
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 68
- 229910002092 carbon dioxide Inorganic materials 0.000 description 34
- 239000001569 carbon dioxide Substances 0.000 description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 229910001868 water Inorganic materials 0.000 description 24
- 239000007788 liquid Substances 0.000 description 19
- 230000002829 reductive effect Effects 0.000 description 14
- 230000008901 benefit Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000005406 washing Methods 0.000 description 8
- 239000007791 liquid phase Substances 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000376 reactant Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000005201 scrubbing Methods 0.000 description 4
- 239000007792 gaseous phase Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 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
- 239000006096 absorbing agent Substances 0.000 description 1
- YSKUZVBSHIWEFK-UHFFFAOYSA-N ammelide Chemical compound NC1=NC(O)=NC(O)=N1 YSKUZVBSHIWEFK-UHFFFAOYSA-N 0.000 description 1
- MASBWURJQFFLOO-UHFFFAOYSA-N ammeline Chemical compound NC1=NC(N)=NC(O)=N1 MASBWURJQFFLOO-UHFFFAOYSA-N 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009615 deamination Effects 0.000 description 1
- 238000006481 deamination reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012530 fluid Substances 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
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
-
- 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
-
- 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
- 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
- C07D251/62—Purification of melamine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102017000127926 | 2017-11-09 | ||
IT201700127926 | 2017-11-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109761922A CN109761922A (zh) | 2019-05-17 |
CN109761922B true CN109761922B (zh) | 2023-11-21 |
Family
ID=61527174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811325913.5A Active CN109761922B (zh) | 2017-11-09 | 2018-11-08 | 通过脲的热解生产高纯度三聚氰胺的改进方法和相关装置 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109761922B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4074690A4 (en) * | 2019-12-10 | 2024-01-17 | Resonac Corp | METHOD FOR PRODUCING N-VINYLACETAMIDE AND PYROLYSIS DEVICE |
IT202100013079A1 (it) * | 2021-05-20 | 2022-11-20 | Eurotecnica Melamine Ag | Apparato per la produzione di melammina |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1538961A (zh) * | 2001-06-08 | 2004-10-20 | ŷ������������˾(��ʿ�ֹ�˾) | 高收率生产高纯度三聚氰胺的改良方法 |
CN1646503A (zh) * | 2002-03-25 | 2005-07-27 | 欧洲技术集团股份有限公司 | 由脲生产三聚氰胺的方法、特别是从尾气中分离三聚氰胺的方法 |
CN1659201A (zh) * | 2002-05-14 | 2005-08-24 | 欧洲技术集团股份有限公司 | 由脲生产三聚氰胺的方法、特别是在第一分离步骤中得到不含三聚氰胺的尾气的方法 |
ITMI20082294A1 (it) * | 2008-12-22 | 2010-06-23 | Eurotecnica Melamine Luxemburg Zwe Igniederlassun | Procedimento migliorato per la produzione di melammina ad elevata purezza mediante pirolisi dell'urea |
CN102285929A (zh) * | 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 | 通过尿素热解生产高纯度三聚氰胺的低能耗方法和相关设备 |
-
2018
- 2018-11-08 CN CN201811325913.5A patent/CN109761922B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1538961A (zh) * | 2001-06-08 | 2004-10-20 | ŷ������������˾(��ʿ�ֹ�˾) | 高收率生产高纯度三聚氰胺的改良方法 |
CN1646503A (zh) * | 2002-03-25 | 2005-07-27 | 欧洲技术集团股份有限公司 | 由脲生产三聚氰胺的方法、特别是从尾气中分离三聚氰胺的方法 |
CN1659201A (zh) * | 2002-05-14 | 2005-08-24 | 欧洲技术集团股份有限公司 | 由脲生产三聚氰胺的方法、特别是在第一分离步骤中得到不含三聚氰胺的尾气的方法 |
ITMI20082294A1 (it) * | 2008-12-22 | 2010-06-23 | Eurotecnica Melamine Luxemburg Zwe Igniederlassun | Procedimento migliorato per la produzione di melammina ad elevata purezza mediante pirolisi dell'urea |
CN102285929A (zh) * | 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 | 通过尿素热解生产高纯度三聚氰胺的低能耗方法和相关设备 |
Also Published As
Publication number | Publication date |
---|---|
CN109761922A (zh) | 2019-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108026034B (zh) | 尿素制造方法以及尿素制造装置 | |
RU2552650C2 (ru) | Способ получения высокочистого меламина с низким расходом энергии посредством пиролиза мочевины и оборудование для осуществления этого способа | |
EP1404658B1 (en) | Improved procedure for the production of high-purity melamine with high yields | |
CN109761922B (zh) | 通过脲的热解生产高纯度三聚氰胺的改进方法和相关装置 | |
BR112016024878B1 (pt) | processo e planta para a síntese de ureia e melamina | |
CN108602784B (zh) | 改造高压三聚氰胺设备的方法 | |
EP2521710B1 (en) | A urea stripping process for the production of urea | |
NL1014756C2 (nl) | Reactor en werkwijze voor de bereiding van ureum. | |
US20020035292A1 (en) | Process for the preparation of urea | |
CN110734406A (zh) | 通过尿素热解生产高纯度三聚氰胺的氨消耗减少的低能耗方法及相关设备 | |
WO2016124413A1 (en) | Method for revamping a high pressure melamine plant | |
RU2713178C2 (ru) | Способ получения меламина с разделением и выделением высокочистых CO2 и NH3 | |
US20110009630A1 (en) | Process for the preparation of melamine | |
US7893298B2 (en) | Method for concentrating an aqueous ammonium carbamate stream | |
ITMI20082294A1 (it) | Procedimento migliorato per la produzione di melammina ad elevata purezza mediante pirolisi dell'urea | |
WO2009132750A1 (en) | Process for recovering solid melamine | |
ITMI20081185A1 (it) | Procedimento per la produzione di melammina da urea con recupero separato ad alta purezza dei co-prodotti ammoniaca ed anidride carbonica | |
RU2808666C2 (ru) | Способ синтеза мочевины | |
US20230118984A1 (en) | Process and plant for the synthesis of urea | |
WO2024112196A1 (en) | Coupled urea melamine plant | |
CN117222620A (zh) | 合成尿素和三聚氰胺的方法和装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20210415 Address after: Swiss Wollerau Applicant after: Ouji melamine Co.,Ltd. Address before: Itgen, Switzerland Applicant before: Eurotechnology is based in Itgen, Luxembourg, Melamine Branch |
|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20231227 Address after: Schwyz Switzerland Patentee after: Proman Ltd. Address before: Swiss Wollerau Patentee before: Ouji melamine Co.,Ltd. |