BR0214165A - Processo para purificar gases impróprios de uma fabrica melamina - Google Patents
Processo para purificar gases impróprios de uma fabrica melaminaInfo
- Publication number
- BR0214165A BR0214165A BR0214165-5A BR0214165A BR0214165A BR 0214165 A BR0214165 A BR 0214165A BR 0214165 A BR0214165 A BR 0214165A BR 0214165 A BR0214165 A BR 0214165A
- Authority
- BR
- Brazil
- Prior art keywords
- melamine
- gases
- purify
- unfit
- factory
- Prior art date
Links
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
-
- 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
- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
-
- 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
- B01D53/14—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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Gas Separation By Absorption (AREA)
Abstract
"PROCESSO PARA PURIFICAR GASES IMPRóPRIOS DE UMA FáBRICA DE MELAMINA". A presente invenção refere-se a um método para purificar gases impróprios de uma instalação produzindo melamina de pressão elevada, com formação de intermediários de melamina. De acordo com o método da invenção, os gases impróprios são trazidos em contato, em uma primeira etapa, com a massa fundida circulatória de uréia contendo intermediários de melamina e NH~ 3~, e, em uma segunda etapa, com uma massa fundida fresca de uréia.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0180601A AT410794B (de) | 2001-11-16 | 2001-11-16 | Verfahren zur reinigung von offgasen einer melaminanlage |
DE10229101A DE10229101A1 (de) | 2001-11-16 | 2002-06-25 | Verfahren zur Reinigung von Offgasen einer Melaminanlage |
PCT/DE2002/004250 WO2003045538A1 (de) | 2001-11-16 | 2002-11-14 | Verfahren zur reinigung von offgasen einer melaminanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0214165A true BR0214165A (pt) | 2004-09-28 |
Family
ID=25608541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0214165-5A BR0214165A (pt) | 2001-11-16 | 2002-11-14 | Processo para purificar gases impróprios de uma fabrica melamina |
Country Status (9)
Country | Link |
---|---|
US (1) | US7311759B2 (pt) |
EP (1) | EP1461139B1 (pt) |
CN (1) | CN100518896C (pt) |
AU (1) | AU2002351682B2 (pt) |
BR (1) | BR0214165A (pt) |
DE (1) | DE50204130D1 (pt) |
PL (1) | PL206366B1 (pt) |
RU (1) | RU2304456C2 (pt) |
WO (1) | WO2003045538A1 (pt) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007007746B4 (de) * | 2007-02-16 | 2008-12-24 | Lurgi Gmbh | Gaswäscher und Verwendung des Gaswäschers sowie Verfahren zum Betrieb des Gaswäschers |
EP2119710A1 (en) * | 2008-05-14 | 2009-11-18 | Urea Casale S.A. | Process for producing high-quality melamine from urea |
FR2939693B1 (fr) * | 2008-12-16 | 2011-12-23 | Inst Francais Du Petrole | Nouveau procede de recuperation du co2 issu des fumees de regeneration d'une unite de craquage catalytique |
CN101862577A (zh) * | 2009-06-12 | 2010-10-20 | 河南骏化发展股份有限公司 | 一种三聚氰胺尾气回收的方法 |
EP2907567A1 (en) | 2014-02-18 | 2015-08-19 | Casale Sa | Combined reactor for high-pressure synthesis of melamine |
CN104370775B (zh) * | 2014-10-25 | 2017-02-15 | 华强化工集团股份有限公司 | 一种利用尿素装置回收三聚氰胺尾气的装置及工艺 |
CN108939856A (zh) * | 2018-07-31 | 2018-12-07 | 苏州科博思设备工程有限公司 | 一种脱硫器 |
CN108939854A (zh) * | 2018-07-31 | 2018-12-07 | 苏州科博思设备工程有限公司 | 一种脱硫装置 |
IT201900023160A1 (it) * | 2019-12-06 | 2021-06-06 | Eurotecnica Melamine Ag | Pompa centrifuga per processare urea fusa e relativo impianto |
CN111007010B (zh) * | 2019-12-25 | 2022-08-23 | 河南农业大学 | 一种土壤生物有效态氮磷流路控制系统及其方法 |
CN112138532B (zh) * | 2020-09-30 | 2021-06-15 | 重庆富源化工有限公司 | 一种可自动检测且平衡氨水水位和水压的装置 |
CN113828117B (zh) * | 2021-10-18 | 2022-09-23 | 山东省舜天化工集团有限公司 | 一种三聚氰胺放料废气处理再利用系统及方法 |
CN114452897A (zh) * | 2022-01-06 | 2022-05-10 | 四川金象赛瑞化工股份有限公司 | 一种尿素加料装置、加料方法及三聚氰胺生产装置和方法 |
CN115073389B (zh) * | 2022-07-01 | 2023-10-31 | 山东省舜天化工集团有限公司 | 一种节能型三聚氰胺生产系统及生产方法 |
EP4349817A1 (en) | 2022-10-07 | 2024-04-10 | Casale Sa | Melamine process with a two-stage purification of melamine offgas |
WO2024074656A1 (en) | 2022-10-07 | 2024-04-11 | Casale Sa | Melamine process with a two-stage purification of melamine offgas |
WO2024083571A1 (en) | 2022-10-21 | 2024-04-25 | Casale Sa | Melamine process with purification of melamine offgas |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3155723A (en) * | 1960-02-04 | 1964-11-03 | Chemical Construction Corp | Synthesis of urea and recovery of residual reactants |
US3386999A (en) * | 1966-02-10 | 1968-06-04 | Chemical Construction Corp | Synthesis of melamine |
US3700672A (en) * | 1969-04-15 | 1972-10-24 | Nissan Chemical Ind Ltd | Process for recovering by-product gases at high pressure in melamine production |
US4138560A (en) * | 1975-06-10 | 1979-02-06 | Basf Aktiengesellschaft | Process for cooling melamine synthesis waste gases |
JPS5381898A (en) | 1976-12-28 | 1978-07-19 | Toshiba Corp | Piping device |
SU863746A1 (ru) | 1979-03-05 | 1981-09-15 | Проектно-Технологический Трест Оргтехстрой Воронежского Территориального Управления Строительства | Устройство дл разогрева и обезвоживани битумного материала |
SU1074161A1 (ru) | 1982-03-29 | 1992-01-15 | Предприятие П/Я Х-5476 | Устройство дл газовой эпитаксии полупроводниковых соединений |
US4565867A (en) * | 1984-01-05 | 1986-01-21 | Melamine Chemicals, Inc. | Anhydrous high-pressure melamine synthesis |
SE9001957L (sv) | 1990-05-31 | 1991-12-01 | Chemrec Ab | Rening av processgas fraan partiell foerbraenning av svartlut |
DE4440646A1 (de) | 1994-11-14 | 1996-05-15 | Bayer Ag | Verfahren zur Oxidation von Chlorwasserstoff |
US5514796A (en) | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Melamine of improved purity produced by high-pressure, non-catalytic process |
NL1003328C2 (nl) * | 1996-06-13 | 1997-12-17 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
-
2002
- 2002-11-14 PL PL368283A patent/PL206366B1/pl unknown
- 2002-11-14 EP EP02787376A patent/EP1461139B1/de not_active Expired - Lifetime
- 2002-11-14 WO PCT/DE2002/004250 patent/WO2003045538A1/de not_active Application Discontinuation
- 2002-11-14 CN CNB028226984A patent/CN100518896C/zh not_active Expired - Lifetime
- 2002-11-14 US US10/495,310 patent/US7311759B2/en not_active Expired - Lifetime
- 2002-11-14 DE DE50204130T patent/DE50204130D1/de not_active Expired - Lifetime
- 2002-11-14 BR BR0214165-5A patent/BR0214165A/pt not_active Application Discontinuation
- 2002-11-14 RU RU2004114999/15A patent/RU2304456C2/ru active
- 2002-11-14 AU AU2002351682A patent/AU2002351682B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
EP1461139B1 (de) | 2005-08-31 |
AU2002351682A1 (en) | 2003-06-10 |
RU2304456C2 (ru) | 2007-08-20 |
DE50204130D1 (de) | 2005-10-06 |
CN100518896C (zh) | 2009-07-29 |
PL368283A1 (en) | 2005-03-21 |
RU2004114999A (ru) | 2005-05-27 |
PL206366B1 (pl) | 2010-07-30 |
US20050056147A1 (en) | 2005-03-17 |
WO2003045538A1 (de) | 2003-06-05 |
EP1461139A1 (de) | 2004-09-29 |
AU2002351682B2 (en) | 2007-09-20 |
US7311759B2 (en) | 2007-12-25 |
CN1585665A (zh) | 2005-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
B11B | Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements |