KR840004414A - 멜라민의 제조방법 - Google Patents
멜라민의 제조방법 Download PDFInfo
- Publication number
- KR840004414A KR840004414A KR1019830001423A KR830001423A KR840004414A KR 840004414 A KR840004414 A KR 840004414A KR 1019830001423 A KR1019830001423 A KR 1019830001423A KR 830001423 A KR830001423 A KR 830001423A KR 840004414 A KR840004414 A KR 840004414A
- Authority
- KR
- South Korea
- Prior art keywords
- melamine
- aqueous
- stream
- producing
- aqueous stream
- Prior art date
Links
- 229920000877 Melamine resin Polymers 0.000 title claims 20
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims 20
- 238000004519 manufacturing process Methods 0.000 title claims 14
- 238000000034 method Methods 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims 8
- 239000002245 particle Substances 0.000 claims 5
- 239000012736 aqueous medium Substances 0.000 claims 4
- 239000011541 reaction mixture Substances 0.000 claims 4
- 239000000725 suspension Substances 0.000 claims 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 239000002244 precipitate Substances 0.000 claims 2
- 239000000047 product Substances 0.000 claims 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims 1
- 239000007900 aqueous suspension Substances 0.000 claims 1
- 239000004202 carbamide Substances 0.000 claims 1
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 claims 1
- 230000008025 crystallization Effects 0.000 claims 1
- 238000010790 dilution Methods 0.000 claims 1
- 239000012895 dilution Substances 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000000197 pyrolysis Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 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
- C07D251/56—Preparation of melamine
- C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Catalysts (AREA)
- Peptides Or Proteins (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Removal Of Specific Substances (AREA)
- Seasonings (AREA)
- Glass Compositions (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Cosmetics (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
도면는 본 발명에 따른 개선된 공정을 보이는 도식도이다.
Claims (12)
- 반응 혼합물이 수성매체에 의해 냉각되어 멜라민과 반응 부산물을 함유한 수성생성성 스트림이 형성되고, 생성멜라민이 공정으로 재순화되는 잔여 수성 스트립을 남기면서 상기 수성생성 스트립과 분리되는 요소 또는 열분해 생성물로부터 멜라민을 제조하며 부산물을 포함하고 있는 상기 잔여 수성스트림의 일부를 나머지 잔여 수성스트림에서 분리하여 상기 공정에 재순환시키기 전에 부산물 제거처리를 함을 특징으로 하는 멜라민의 제조방법
- 부산물 제거처리를 받게 되는 잔여 수성스트림의 비율은 상기 스트림의 5-50%임을 특징으로 하는 특허청구범위 1항에 따른 멜라민 제조방법
- 부산물 제거처리를 받게 되는 잔여 수성스트림의 비율은 상기 스트림의 8-15%임을 특징으로 하는 특허청구범위 제2항에 따른 멜라민의 제조 방법
- 잔여 수성스트림의 일부는 그 pH 값을 7.5-9.0으로 낮추는 처리를 받아서 상기 부산물의 침전을 형성하며, 상기 침전물을 여과에 의해 제거됨을 특징으로 하는 특허청구 범위 제1,2,3항에 따른 멜라민의 제조방법
- 상기 pH의 저하는 이산화탄소의 첨가로 초래됨을 특징으로 하는 특허청구범위 제4항에 따른 멜라민의 제조방법
- 상기 잔여 수성스트림 처리액중의 적어도 일부는 상기 반응 혼합물의 냉각용 수성매체로서 사용됨을 특징으로 하는 특허청구범위 제1항에 따른 멜라민의 제조방법
- 상기 잔여 수성스트림의 나머지는 상기 반응 혼합물의 냉각용 수성매체로서 적어도 일부가 사용됨을특징으로 하는 특허청구범위 제1항에 따른 멜라민의 제조방법
- 상기 반응혼합물이 상기 수성매체로 냉각되어 멜라민 입자의 수성서스펜션이 형성되고, 이 서스펜션은 재순환된 잔여 수성스트림으로 희석되며, 상기 멜라민입자는 녹아서 상기 수성 생성물 스트림이 됨을 특징으로 하는 특허청구범위 제1항에 따른 멜라민의 제조방법
- 상기 서스펜션은 상기 재순환된 수성 스트림으 처리액 일부로써 희석됨을 특징으로 하는 특허청구범위 제8항에 따른 멜라민의 제조방법
- 상기 서스펜션은 희석후에 상기 멜라민 입자의 용해를 촉진하기 위해 가열됨을 특징으로 하는 특허청구범위 제8항에 따른 멜라민의 제조방법
- 멜라민이 결정화되어 상기 수성생성 스트림에서 제거되고, 교체 멜라민 입자가 없는 생성 잔여수성 스트림의 일부는 부산물을 제거하기 위한 상기 처리를 받음을 특징으로 하는 특허청구범위 제8,9,10항에 따른 멜라민의 제조방법
- 상기 수성생성 스트림은 그안에 분산된 입자를 제거하기 위해 상기 결정화전에 여과됨을 특징으로 하는 특허청구범위 제11항에 따른 멜라민의 제조방법※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8201479A NL8201479A (nl) | 1982-04-07 | 1982-04-07 | Werkwijze voor het bereiden van melamine. |
| NL8201479 | 1982-04-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR840004414A true KR840004414A (ko) | 1984-10-15 |
| KR860001569B1 KR860001569B1 (ko) | 1986-10-08 |
Family
ID=19839547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019830001423A KR860001569B1 (ko) | 1982-04-07 | 1983-04-06 | 멜라민의 제조방법 |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US4408046A (ko) |
| EP (1) | EP0091174B1 (ko) |
| JP (1) | JPS58185573A (ko) |
| KR (1) | KR860001569B1 (ko) |
| AT (1) | ATE30586T1 (ko) |
| BG (1) | BG50277A3 (ko) |
| BR (1) | BR8301744A (ko) |
| CA (1) | CA1244423A (ko) |
| CS (1) | CS241054B2 (ko) |
| DD (1) | DD209625A5 (ko) |
| DE (1) | DE3374311D1 (ko) |
| ES (1) | ES8402277A1 (ko) |
| HU (1) | HU190834B (ko) |
| IN (1) | IN158211B (ko) |
| MX (1) | MX168144B (ko) |
| NL (1) | NL8201479A (ko) |
| NO (1) | NO163009C (ko) |
| PL (1) | PL142730B1 (ko) |
| RO (1) | RO89260A (ko) |
| SU (1) | SU1424734A3 (ko) |
| YU (1) | YU43655B (ko) |
| ZA (1) | ZA832405B (ko) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3546893C3 (de) * | 1984-01-05 | 1998-01-29 | Melamine Chemicals Inc | Wasserfreie Hochdruck-Melamin-Synthese |
| DE3500188C2 (de) * | 1984-01-05 | 1994-08-18 | Melamine Chemicals Inc | Wasserfreie Hochdruck-Melamin-Synthese |
| US4565867A (en) * | 1984-01-05 | 1986-01-21 | Melamine Chemicals, Inc. | Anhydrous high-pressure melamine synthesis |
| IE57911B1 (en) * | 1984-01-05 | 1993-05-19 | Melamine Chemicals Inc | Production of melamine |
| US4648955A (en) * | 1985-04-19 | 1987-03-10 | Ivac Corporation | Planar multi-junction electrochemical cell |
| DE4035724A1 (de) * | 1990-11-09 | 1992-05-14 | Jacobs Suchard Ag | Vorrichtung zum aufnehmen und ausgeben von fluessigkeiten |
| IT1261841B (it) * | 1993-08-23 | 1996-06-03 | Conser Spa | Procedimento per la produzione di melammina ad alta purezza. |
| DE59906703D1 (de) * | 1998-11-13 | 2003-09-25 | Agrolinz Melamin Gmbh Linz | Verfahren zur herstellung von reinem melamin |
| NL1012466C2 (nl) * | 1999-06-29 | 2001-01-02 | Dsm Nv | Werkwijze voor de bereiding van melamine uit ureum. |
| IT1315255B1 (it) * | 1999-11-16 | 2003-02-03 | Eurotecnica Dev And Licensing | Procedimento di purificazione della melammina. |
| IT1315265B1 (it) * | 1999-12-22 | 2003-02-03 | Eurotecnica Dev And Licensing | Processo per la produzione con altre rese di melammina ad elevatapurezza |
| ES2239236T3 (es) * | 2001-07-24 | 2005-09-16 | Dsm Ip Assets B.V. | Metodo para obtener una solucion de carbamato de amonio a partir de una mezcla gaseosa que contiene amoniaco, agua y dioxido de carbono. |
| ITMI20021026A1 (it) * | 2002-05-14 | 2003-11-14 | Eurotecnica Dev & Licensing S | Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione |
| NL1021287C2 (nl) * | 2002-08-15 | 2004-02-17 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| NL1022414C2 (nl) * | 2003-01-17 | 2004-07-20 | Dsm Nv | Werkwijze voor het onttrekken van energie uit rookgassen. |
| DE102005028665A1 (de) * | 2005-06-15 | 2007-01-04 | Ami-Agrolinz Melamine International Gmbh | Verfahren zur Reinigung von Abwässern aus Melaminanlagen |
| EP2098516A1 (en) * | 2008-03-04 | 2009-09-09 | Urea Casale S.A. | Process for the production of high purity melamine from urea |
| ITMI20080861A1 (it) * | 2008-05-13 | 2009-11-14 | Eurotecnica Melamine Luxembourg | Processo migliorato per la purificazione della melammina e relativa apparecchiatura |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496176A (en) * | 1968-06-19 | 1970-02-17 | Allied Chem | Melamine purification |
| NL161750C (nl) * | 1968-11-16 | 1980-03-17 | Stamicarbon | Werkwijze voor het afscheiden van melamine uit een gasvormig reactiemengsel van melamine, ammoniak en kooldioxyde. |
| RO74590A (ro) * | 1977-01-19 | 1981-08-30 | Stamicarbon Bv,Nl | Procedeu de preparare a melaminei din uree |
| NL7903473A (nl) * | 1979-05-03 | 1980-11-05 | Stamicarbon | Werkwijze voor het bereiden van melamine. |
-
1982
- 1982-04-07 NL NL8201479A patent/NL8201479A/nl not_active Application Discontinuation
- 1982-04-16 US US06/368,971 patent/US4408046A/en not_active Expired - Lifetime
-
1983
- 1983-03-03 IN IN269/CAL/83A patent/IN158211B/en unknown
- 1983-03-28 YU YU727/83A patent/YU43655B/xx unknown
- 1983-03-29 BG BG060327A patent/BG50277A3/xx unknown
- 1983-04-01 EP EP83200475A patent/EP0091174B1/en not_active Expired
- 1983-04-01 DE DE8383200475T patent/DE3374311D1/de not_active Expired
- 1983-04-01 AT AT83200475T patent/ATE30586T1/de not_active IP Right Cessation
- 1983-04-05 RO RO83110557A patent/RO89260A/ro unknown
- 1983-04-05 ZA ZA832405A patent/ZA832405B/xx unknown
- 1983-04-05 DD DD83249564A patent/DD209625A5/de not_active IP Right Cessation
- 1983-04-06 SU SU833584512A patent/SU1424734A3/ru active
- 1983-04-06 CS CS832426A patent/CS241054B2/cs unknown
- 1983-04-06 HU HU831185A patent/HU190834B/hu not_active IP Right Cessation
- 1983-04-06 NO NO831230A patent/NO163009C/no unknown
- 1983-04-06 JP JP58060638A patent/JPS58185573A/ja active Granted
- 1983-04-06 PL PL1983241365A patent/PL142730B1/pl unknown
- 1983-04-06 BR BR8301744A patent/BR8301744A/pt not_active IP Right Cessation
- 1983-04-06 KR KR1019830001423A patent/KR860001569B1/ko not_active IP Right Cessation
- 1983-04-06 CA CA000425318A patent/CA1244423A/en not_active Expired
- 1983-04-06 MX MX007960A patent/MX168144B/es unknown
- 1983-04-06 ES ES521272A patent/ES8402277A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| PL241365A1 (en) | 1983-11-21 |
| BG50277A3 (en) | 1992-06-15 |
| ES521272A0 (es) | 1984-01-16 |
| DE3374311D1 (en) | 1987-12-10 |
| ZA832405B (en) | 1983-12-28 |
| EP0091174A1 (en) | 1983-10-12 |
| PL142730B1 (en) | 1987-11-30 |
| US4408046A (en) | 1983-10-04 |
| MX168144B (es) | 1993-05-06 |
| CA1244423A (en) | 1988-11-08 |
| BR8301744A (pt) | 1983-12-13 |
| EP0091174B1 (en) | 1987-11-04 |
| CS242683A2 (en) | 1985-07-16 |
| JPS58185573A (ja) | 1983-10-29 |
| KR860001569B1 (ko) | 1986-10-08 |
| NO163009B (no) | 1989-12-11 |
| YU43655B (en) | 1989-10-31 |
| HU190834B (en) | 1986-11-28 |
| DD209625A5 (de) | 1984-05-16 |
| NL8201479A (nl) | 1983-11-01 |
| ATE30586T1 (de) | 1987-11-15 |
| ES8402277A1 (es) | 1984-01-16 |
| YU72783A (en) | 1986-02-28 |
| IN158211B (ko) | 1986-09-27 |
| CS241054B2 (en) | 1986-03-13 |
| NO831230L (no) | 1983-10-10 |
| SU1424734A3 (ru) | 1988-09-15 |
| JPH0480908B2 (ko) | 1992-12-21 |
| RO89260A (ro) | 1986-03-15 |
| NO163009C (no) | 1990-03-21 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| G160 | Decision to publish patent application | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 19930906 Year of fee payment: 8 |
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| LAPS | Lapse due to unpaid annual fee |