CN110551074A - 在由尿素制备三聚氰胺的方法中分离三聚氰胺晶体的方法和装置 - Google Patents
在由尿素制备三聚氰胺的方法中分离三聚氰胺晶体的方法和装置 Download PDFInfo
- Publication number
- CN110551074A CN110551074A CN201910404371.9A CN201910404371A CN110551074A CN 110551074 A CN110551074 A CN 110551074A CN 201910404371 A CN201910404371 A CN 201910404371A CN 110551074 A CN110551074 A CN 110551074A
- Authority
- CN
- China
- Prior art keywords
- melamine
- mother liquor
- weight
- crystals
- rotating basket
- 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.)
- Pending
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 83
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000013078 crystal Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008569 process Effects 0.000 title claims abstract description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 8
- 239000004202 carbamide Substances 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title description 5
- 239000012452 mother liquor Substances 0.000 claims abstract description 53
- 239000000725 suspension Substances 0.000 claims abstract description 17
- 238000002425 crystallisation Methods 0.000 claims abstract description 16
- 230000008025 crystallization Effects 0.000 claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 23
- 239000007791 liquid phase Substances 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 17
- 238000010908 decantation Methods 0.000 claims description 15
- 229910021529 ammonia Inorganic materials 0.000 claims description 14
- 239000007790 solid phase Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 230000001133 acceleration Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000012071 phase Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 18
- 239000000047 product Substances 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000011001 backwashing Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 238000011085 pressure filtration Methods 0.000 description 4
- QCXPXGBZAPMXMN-UHFFFAOYSA-N NC1=NN=[N+](C=C1)[O-] Chemical compound NC1=NN=[N+](C=C1)[O-] QCXPXGBZAPMXMN-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000000750 progressive effect Effects 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 241000209761 Avena Species 0.000 description 2
- 235000007319 Avena orientalis Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000007806 chemical reaction intermediate Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2083—Configuration of liquid outlets
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Centrifugal Separators (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102018000005382A IT201800005382A1 (it) | 2018-05-15 | 2018-05-15 | Procedimento e dispositivo per separare cristalli di melammina in un processo di produzione di melammina da urea |
IT102018000005382 | 2018-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110551074A true CN110551074A (zh) | 2019-12-10 |
Family
ID=63312248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910404371.9A Pending CN110551074A (zh) | 2018-05-15 | 2019-05-15 | 在由尿素制备三聚氰胺的方法中分离三聚氰胺晶体的方法和装置 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3569595B1 (zh) |
CN (1) | CN110551074A (zh) |
IT (1) | IT201800005382A1 (zh) |
LT (1) | LT3569595T (zh) |
PL (1) | PL3569595T3 (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1419550A (zh) * | 2000-03-27 | 2003-05-21 | 卡萨尔化学股份有限公司 | 生产高纯度三聚氰胺晶体的方法 |
CN1553902A (zh) * | 2001-09-12 | 2004-12-08 | Dsm Ip财产有限公司 | 从三聚氰胺熔融物获得晶体三聚氰胺的方法 |
ITMI20061589A1 (it) * | 2006-08-07 | 2008-02-08 | Eurotecnica Melamine Luxembourg | Procedimento e dispositivo per la separazione dei cristalli di melamina in un processo di produzione di melammina da urea |
CN102850286A (zh) * | 2008-03-04 | 2013-01-02 | 卡萨尔尿素公司 | 从尿素中生产高纯度三聚氰胺的方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3161638A (en) | 1964-12-15 | Filter | ||
IT1400090B1 (it) | 2010-05-06 | 2013-05-17 | Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen | Procedimento a basso consumo energetico per la produzione di melammina ad elevata purezza tramite pirolisi dell'urea, e relativa apparecchiatura |
-
2018
- 2018-05-15 IT IT102018000005382A patent/IT201800005382A1/it unknown
-
2019
- 2019-05-15 LT LTEP19174557.9T patent/LT3569595T/lt unknown
- 2019-05-15 EP EP19174557.9A patent/EP3569595B1/en active Active
- 2019-05-15 CN CN201910404371.9A patent/CN110551074A/zh active Pending
- 2019-05-15 PL PL19174557T patent/PL3569595T3/pl unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1419550A (zh) * | 2000-03-27 | 2003-05-21 | 卡萨尔化学股份有限公司 | 生产高纯度三聚氰胺晶体的方法 |
CN1553902A (zh) * | 2001-09-12 | 2004-12-08 | Dsm Ip财产有限公司 | 从三聚氰胺熔融物获得晶体三聚氰胺的方法 |
ITMI20061589A1 (it) * | 2006-08-07 | 2008-02-08 | Eurotecnica Melamine Luxembourg | Procedimento e dispositivo per la separazione dei cristalli di melamina in un processo di produzione di melammina da urea |
CN102850286A (zh) * | 2008-03-04 | 2013-01-02 | 卡萨尔尿素公司 | 从尿素中生产高纯度三聚氰胺的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3569595A2 (en) | 2019-11-20 |
LT3569595T (lt) | 2021-11-25 |
IT201800005382A1 (it) | 2019-11-15 |
EP3569595A3 (en) | 2019-11-27 |
PL3569595T3 (pl) | 2022-01-03 |
EP3569595B1 (en) | 2021-06-30 |
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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: 20210419 Address after: Swiss Wollerau Applicant after: Ouji melamine Co.,Ltd. Address before: Itgen, Switzerland Applicant before: Eurotechnology is based in Itgen, Luxembourg, Melamine Branch |
|
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20240218 Address after: Schwyz Switzerland Applicant after: Proman Ltd. Country or region after: Switzerland Address before: Swiss Wollerau Applicant before: Ouji melamine Co.,Ltd. Country or region before: Switzerland |