TW200911764A - Improved process for the treatment of retentate in a melamine production plant - Google Patents
Improved process for the treatment of retentate in a melamine production plant Download PDFInfo
- Publication number
- TW200911764A TW200911764A TW97125634A TW97125634A TW200911764A TW 200911764 A TW200911764 A TW 200911764A TW 97125634 A TW97125634 A TW 97125634A TW 97125634 A TW97125634 A TW 97125634A TW 200911764 A TW200911764 A TW 200911764A
- Authority
- TW
- Taiwan
- Prior art keywords
- retentate
- melamine
- stream
- operation period
- liquid stream
- Prior art date
Links
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 85
- 239000012465 retentate Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 235000007319 Avena orientalis Nutrition 0.000 claims abstract description 48
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 46
- 241000209761 Avena Species 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000012466 permeate Substances 0.000 claims abstract description 24
- 239000012452 mother liquor Substances 0.000 claims abstract description 17
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 230000007062 hydrolysis Effects 0.000 claims abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 7
- 230000008025 crystallization Effects 0.000 claims abstract description 7
- 239000007900 aqueous suspension Substances 0.000 claims abstract description 3
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 60
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 34
- 229910021529 ammonia Inorganic materials 0.000 claims description 25
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 18
- 239000001569 carbon dioxide Substances 0.000 claims description 17
- 238000000746 purification Methods 0.000 claims description 15
- 239000008346 aqueous phase Substances 0.000 claims description 9
- 230000002829 reductive effect Effects 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 abstract description 10
- 230000015572 biosynthetic process Effects 0.000 abstract description 10
- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- 244000075850 Avena orientalis Species 0.000 abstract description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 14
- 239000004202 carbamide Substances 0.000 description 14
- 239000006227 byproduct Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000725 suspension Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005979 thermal decomposition reaction Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000009615 deamination Effects 0.000 description 3
- 238000006481 deamination reaction Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000007806 chemical reaction intermediate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- JZLWSRCQCPAUDP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;urea Chemical compound NC(N)=O.NC1=NC(N)=NC(N)=N1 JZLWSRCQCPAUDP-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
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002609 medium 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
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006870 ms-medium Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000002194 synthesizing 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
- C07D251/62—Purification of melamine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preparation Of Fruits And Vegetables (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20071363 ITMI20071363A1 (it) | 2007-07-09 | 2007-07-09 | Processo migliorato per il trattamento del retentato in un impianto per la produzione di melammina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW200911764A true TW200911764A (en) | 2009-03-16 |
Family
ID=39884702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97125634A TW200911764A (en) | 2007-07-09 | 2008-07-08 | Improved process for the treatment of retentate in a melamine production plant |
Country Status (4)
| Country | Link |
|---|---|
| AR (1) | AR071539A1 (es) |
| IT (1) | ITMI20071363A1 (es) |
| TW (1) | TW200911764A (es) |
| WO (1) | WO2009007813A1 (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2308856A1 (en) | 2009-10-09 | 2011-04-13 | Borealis Agrolinz Melamine GmbH | Water recycling in a melamine production process |
| CN102633736B (zh) * | 2012-04-06 | 2014-05-07 | 山东大学 | 利用氨气和二氧化碳合成三聚氰酸或三聚氰胺的方法 |
| RU2544704C1 (ru) | 2013-10-28 | 2015-03-20 | Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) | Способ очистки сточных вод производства меламина |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1315265B1 (it) * | 1999-12-22 | 2003-02-03 | Eurotecnica Dev And Licensing | Processo per la produzione con altre rese di melammina ad elevatapurezza |
| ITMI20060759A1 (it) * | 2006-04-14 | 2007-10-15 | Eurotecnica Melamine Luxemburg | Processo migliorato per la produzione di melammina con incremento di resa |
-
2007
- 2007-07-09 IT ITMI20071363 patent/ITMI20071363A1/it unknown
-
2008
- 2008-06-27 WO PCT/IB2008/001724 patent/WO2009007813A1/en not_active Ceased
- 2008-07-08 AR ARP080102938 patent/AR071539A1/es unknown
- 2008-07-08 TW TW97125634A patent/TW200911764A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009007813A1 (en) | 2009-01-15 |
| AR071539A1 (es) | 2010-06-30 |
| ITMI20071363A1 (it) | 2009-01-10 |
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