NL7903623A - Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine. - Google Patents

Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine. Download PDF

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Publication number
NL7903623A
NL7903623A NL7903623A NL7903623A NL7903623A NL 7903623 A NL7903623 A NL 7903623A NL 7903623 A NL7903623 A NL 7903623A NL 7903623 A NL7903623 A NL 7903623A NL 7903623 A NL7903623 A NL 7903623A
Authority
NL
Netherlands
Prior art keywords
urea
waste water
separation
substantially pure
water
Prior art date
Application number
NL7903623A
Other languages
English (en)
Dutch (nl)
Original Assignee
Stamicarbon
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19833125&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NL7903623(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stamicarbon filed Critical Stamicarbon
Priority to NL7903623A priority Critical patent/NL7903623A/nl
Priority to ZA00802477A priority patent/ZA802477B/xx
Priority to EP80200404A priority patent/EP0019326B1/en
Priority to DE8080200404T priority patent/DE3064616D1/de
Priority to AT80200404T priority patent/ATE4496T1/de
Priority to YU01189/80A priority patent/YU118980A/xx
Priority to PL1980224050A priority patent/PL123687B1/pl
Priority to BR8002794A priority patent/BR8002794A/pt
Priority to EG277/80A priority patent/EG14770A/xx
Priority to CS803195A priority patent/CS221908B2/cs
Priority to JP6120180A priority patent/JPS55149676A/ja
Priority to NO801366A priority patent/NO153488C/no
Priority to RO101064A priority patent/RO81470B/ro
Priority to MX808801U priority patent/MX6297E/es
Priority to HU80801134A priority patent/HU180579B/hu
Priority to ES491280A priority patent/ES8107126A1/es
Priority to US06/147,714 priority patent/US4308385A/en
Priority to IN553/CAL/80A priority patent/IN152912B/en
Priority to DD80221019A priority patent/DD150601A5/de
Priority to CA000351675A priority patent/CA1141872A/en
Publication of NL7903623A publication Critical patent/NL7903623A/nl
Priority to YU02847/82A priority patent/YU284782A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/12—Separation of ammonia from gases and vapours
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/08—Preparation of ammonia from nitrogenous organic substances
    • C01C1/086—Preparation of ammonia from nitrogenous organic substances from urea
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Removal Of Specific Substances (AREA)
  • Physical Water Treatments (AREA)
  • Gas Separation By Absorption (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Detergent Compositions (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treating Waste Gases (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
NL7903623A 1979-05-09 1979-05-09 Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine. NL7903623A (nl)

Priority Applications (21)

Application Number Priority Date Filing Date Title
NL7903623A NL7903623A (nl) 1979-05-09 1979-05-09 Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.
ZA00802477A ZA802477B (en) 1979-05-09 1980-04-24 Process for purifying urea-containing waste water and process for preparing melamine
EP80200404A EP0019326B1 (en) 1979-05-09 1980-05-01 Process for purifying urea-containing waste water and process for preparing melamine
DE8080200404T DE3064616D1 (en) 1979-05-09 1980-05-01 Process for purifying urea-containing waste water and process for preparing melamine
AT80200404T ATE4496T1 (de) 1979-05-09 1980-05-01 Verfahren zur reinigung von harnstoff enthaltendem abwasser und verfahren zum herstellen von melamin.
YU01189/80A YU118980A (en) 1979-05-09 1980-05-05 Process for the purification of waste water containing carbamides
PL1980224050A PL123687B1 (en) 1979-05-09 1980-05-06 Process for purification of urea containing effluents
BR8002794A BR8002794A (pt) 1979-05-09 1980-05-06 Processo para a purificacao de agua de refugo contendo ureia e processo para a preparacao de melamina
EG277/80A EG14770A (en) 1979-05-09 1980-05-07 Process for purifying urea-containing waste water and process for preparing melamine
CS803195A CS221908B2 (en) 1979-05-09 1980-05-07 Method of cleaning the refuse waters conteining the urea and method of preparation of the melamine
US06/147,714 US4308385A (en) 1979-05-09 1980-05-08 Process for purifying urea-containing waste water and process for preparing melamine
JP6120180A JPS55149676A (en) 1979-05-09 1980-05-08 Method of purifying waste water containing urea and preparation of melamine
NO801366A NO153488C (no) 1979-05-09 1980-05-08 Fremgangsm¨te ved rensing av urea-inneholdende avfallsvann
RO101064A RO81470B (ro) 1979-05-09 1980-05-08 Procedeu de purificare a apelor reziduale cu continut de uree
MX808801U MX6297E (es) 1979-05-09 1980-05-08 Procedimiento para la purificacion de agua residual que contiene urea,conjuntamente con la separacion de nh3 y co2 substancialmente puros
HU80801134A HU180579B (en) 1979-05-09 1980-05-08 Process for cleaning urea-containing waste waters and for producing melamine
ES491280A ES8107126A1 (es) 1979-05-09 1980-05-08 Procedimiento para purificar agua residual que contiene urea
IN553/CAL/80A IN152912B (xx) 1979-05-09 1980-05-09
DD80221019A DD150601A5 (de) 1979-05-09 1980-05-09 Verfahren zu der reinigung von harnstoffhaltigem abwasser
CA000351675A CA1141872A (en) 1979-05-09 1980-05-09 Process for purifying urea-containing waste water and process for preparing melamine
YU02847/82A YU284782A (en) 1979-05-09 1982-12-22 Process for the manufacture of melamine by means of catalytic conversion of carbamide in the presence of gaseous nh3 or an nh3containing gaseous mixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7903623A NL7903623A (nl) 1979-05-09 1979-05-09 Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.
NL7903623 1979-05-09

Publications (1)

Publication Number Publication Date
NL7903623A true NL7903623A (nl) 1980-11-11

Family

ID=19833125

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7903623A NL7903623A (nl) 1979-05-09 1979-05-09 Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.

Country Status (20)

Country Link
US (1) US4308385A (xx)
EP (1) EP0019326B1 (xx)
JP (1) JPS55149676A (xx)
AT (1) ATE4496T1 (xx)
BR (1) BR8002794A (xx)
CA (1) CA1141872A (xx)
CS (1) CS221908B2 (xx)
DD (1) DD150601A5 (xx)
DE (1) DE3064616D1 (xx)
EG (1) EG14770A (xx)
ES (1) ES8107126A1 (xx)
HU (1) HU180579B (xx)
IN (1) IN152912B (xx)
MX (1) MX6297E (xx)
NL (1) NL7903623A (xx)
NO (1) NO153488C (xx)
PL (1) PL123687B1 (xx)
RO (1) RO81470B (xx)
YU (2) YU118980A (xx)
ZA (1) ZA802477B (xx)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4433146A (en) * 1982-04-07 1984-02-21 Stamicarbon B.V. Process for the preparation of melamine
US4838281A (en) * 1985-02-28 1989-06-13 Alcon Laboratories, Inc. Linear suction control system
DE3844992B4 (de) * 1987-03-04 2006-06-14 Novartis Ag Hydrogentartrat eines Phenylcarbamats
IT1232670B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.
CH679485A5 (xx) * 1989-12-29 1992-02-28 Ammonia Casale Sa
US6258111B1 (en) 1997-10-03 2001-07-10 Scieran Technologies, Inc. Apparatus and method for performing ophthalmic procedures
US6077491A (en) 1997-03-21 2000-06-20 Ec&C Technologies Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
US6358260B1 (en) 1998-04-20 2002-03-19 Med-Logics, Inc. Automatic corneal shaper with two separate drive mechanisms
US6702832B2 (en) 1999-07-08 2004-03-09 Med Logics, Inc. Medical device for cutting a cornea that has a vacuum ring with a slitted vacuum opening
US6699285B2 (en) 1999-09-24 2004-03-02 Scieran Technologies, Inc. Eye endoplant for the reattachment of a retina
KR100339834B1 (ko) * 2000-01-27 2002-06-07 박호군 멜라민 제조 공정중에 배출되는 폐수의 처리 방법
US6428508B1 (en) 2000-02-01 2002-08-06 Enlighten Technologies, Inc. Pulsed vacuum cataract removal system
US6663644B1 (en) 2000-06-02 2003-12-16 Med-Logics, Inc. Cutting blade assembly for a microkeratome
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
US7311700B2 (en) 2000-11-29 2007-12-25 Med-Logics, Inc. LASIK laminar flow system
US6425905B1 (en) 2000-11-29 2002-07-30 Med-Logics, Inc. Method and apparatus for facilitating removal of a corneal graft
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
DE10229103A1 (de) * 2002-06-25 2004-01-15 Agrolinz Melamin Gmbh Vorrichtung und Verfahren zur thermischen Wasseraufbereitung
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
DE102005028665A1 (de) * 2005-06-15 2007-01-04 Ami-Agrolinz Melamine International Gmbh Verfahren zur Reinigung von Abwässern aus Melaminanlagen
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
WO2016201195A1 (en) * 2015-06-10 2016-12-15 Bechtel Hydrocarbon Technology Solutions, Inc. Systems and methods for high co2 ammonia purification

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT261638B (de) * 1966-05-02 1968-05-10 Chemie Linz Ag Verfahren zur Aufarbeitung eines Ammoniak-Kohlensäure-Gasgemisches
FR1541273A (fr) * 1966-10-25 1968-10-04 Toyo Koatsu Ind Inc Procédé de traitement des substances inaltérées de la synthèse de l'urée
DE1670290A1 (de) * 1967-12-01 1971-01-14 Basf Ag Verfahren zur Abtrennung von Ammoniak aus den bei der Melaminsynthese anfallenden Abgasen
NL6801577A (xx) * 1968-02-02 1969-08-05
DE1770969C3 (de) * 1968-07-25 1978-08-24 Basf Ag, 6700 Ludwigshafen Verfahren zur Rückführung der Abgase der Melaminsynthese in die Hamstoffsynthese
JPS4919259B1 (xx) * 1969-08-30 1974-05-16
NL6919152A (xx) * 1969-12-20 1971-06-22
NL165712C (nl) * 1970-05-30 1981-05-15 Stamicarbon Werkwijze en inrichting voor het bij synthesedruk terug- winnen van ammoniak en kooldioxyde uit het spuigas van een ureumsynthese.
US3922222A (en) * 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
US4013757A (en) * 1975-04-17 1977-03-22 Fmc Corporation High pressure thermal hydrolysis process to decompose triazines in acid waste streams
IT1060622B (it) * 1976-05-14 1982-08-20 Snam Progetti Procedimento per la riutilizzazio ne delle acque di processo negli impianti combinati urea e ammoniaca
DE2646804C3 (de) * 1976-10-16 1982-03-11 Basf Ag, 6700 Ludwigshafen Verfahren zur Gewinnung von reinem Ammoniak aus Ammoniak und Kohlendioxid enthaltenden Gasgemischen
NL168196C (nl) * 1976-11-03 1982-03-16 Stamicarbon Werkwijze voor het afscheiden van nh&013 en co&012 uit een mengsel van nh&013, co&012 en h&012o.
IT1065422B (it) * 1976-12-23 1985-02-25 Snam Progetti Processo ammoniaca-urea integrato per la produzione di urea
US4087513A (en) * 1977-08-12 1978-05-02 Olin Corporation Method of hydrolyzing urea contained in waste water streams

Also Published As

Publication number Publication date
US4308385A (en) 1981-12-29
CS221908B2 (en) 1983-04-29
NO153488B (no) 1985-12-23
EP0019326B1 (en) 1983-08-24
RO81470A (ro) 1983-04-29
NO153488C (no) 1986-04-02
YU118980A (en) 1983-04-30
ES491280A0 (es) 1980-12-01
RO81470B (ro) 1983-04-30
ATE4496T1 (de) 1983-09-15
IN152912B (xx) 1984-04-28
HU180579B (en) 1983-03-28
PL224050A1 (xx) 1981-02-13
NO801366L (no) 1980-11-10
EG14770A (en) 1984-09-30
MX6297E (es) 1985-03-18
DD150601A5 (de) 1981-09-09
YU284782A (en) 1985-04-30
PL123687B1 (en) 1982-11-30
DE3064616D1 (en) 1983-09-29
EP0019326A1 (en) 1980-11-26
BR8002794A (pt) 1980-12-16
CA1141872A (en) 1983-02-22
ZA802477B (en) 1981-04-29
ES8107126A1 (es) 1980-12-01
JPS55149676A (en) 1980-11-21

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A1B A search report has been drawn up
BV The patent application has lapsed