IT1105606B - Metodo per l'idrolisi di urea contenuta in acque di scarico - Google Patents

Metodo per l'idrolisi di urea contenuta in acque di scarico

Info

Publication number
IT1105606B
IT1105606B IT49083/78A IT4908378A IT1105606B IT 1105606 B IT1105606 B IT 1105606B IT 49083/78 A IT49083/78 A IT 49083/78A IT 4908378 A IT4908378 A IT 4908378A IT 1105606 B IT1105606 B IT 1105606B
Authority
IT
Italy
Prior art keywords
hydrolysis
waste water
urea contained
urea
contained
Prior art date
Application number
IT49083/78A
Other languages
English (en)
Other versions
IT7849083A0 (it
Original Assignee
Olin Corp
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
Application filed by Olin Corp filed Critical Olin Corp
Publication of IT7849083A0 publication Critical patent/IT7849083A0/it
Application granted granted Critical
Publication of IT1105606B publication Critical patent/IT1105606B/it

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
    • C01C1/08—Preparation of ammonia from nitrogenous organic substances
    • C01C1/086—Preparation of ammonia from nitrogenous organic substances from urea
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Removal Of Specific Substances (AREA)
IT49083/78A 1977-08-12 1978-04-26 Metodo per l'idrolisi di urea contenuta in acque di scarico IT1105606B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/823,883 US4087513A (en) 1977-08-12 1977-08-12 Method of hydrolyzing urea contained in waste water streams

Publications (2)

Publication Number Publication Date
IT7849083A0 IT7849083A0 (it) 1978-04-26
IT1105606B true IT1105606B (it) 1985-11-04

Family

ID=25240003

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49083/78A IT1105606B (it) 1977-08-12 1978-04-26 Metodo per l'idrolisi di urea contenuta in acque di scarico

Country Status (8)

Country Link
US (1) US4087513A (it)
JP (1) JPS5431963A (it)
BR (1) BR7802612A (it)
CA (1) CA1128289A (it)
DE (1) DE2818950C3 (it)
IT (1) IT1105606B (it)
MX (1) MX148042A (it)
NL (1) NL7804522A (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168299A (en) * 1978-03-20 1979-09-18 Olin Corporation Catalytic method for hydrolyzing urea
US4231839A (en) * 1979-01-30 1980-11-04 Cf Industries, Inc. After-treatment processes and apparatus, especially for urea and ammonium nitrate plants
NL7903623A (nl) * 1979-05-09 1980-11-11 Stamicarbon Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.
NL8102391A (nl) * 1981-05-15 1982-12-01 Unie Van Kunstmestfab Bv Werkwijze voor het winnen van waardevolle bestanddelen uit de afvalstromen verkregen bij de ureumbereiding.
US5139754A (en) * 1989-09-12 1992-08-18 Fuel Tech, Inc. Catalytic/non-catalytic combination process for nitrogen oxides reduction
IT1232670B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.
US5047153A (en) * 1989-10-31 1991-09-10 Resources Conservation Company Method for removing amine from solids
US5543123A (en) * 1990-08-01 1996-08-06 Nalco Fuel Tech Low pressure formation of a urea hydrolysate for nitrogen oxides reduction
US5240688A (en) * 1990-08-01 1993-08-31 Fuel Tech Gmbh Process for the in-line hydrolysis of urea
US5281403B1 (en) * 1991-09-27 1996-06-11 Noell Inc Method for converting urea to ammonia
TW229225B (it) * 1992-05-06 1994-09-01 Malco Fuel Tech
US5404841A (en) * 1993-08-30 1995-04-11 Valentine; James M. Reduction of nitrogen oxides emissions from diesel engines
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
ITMI981155A1 (it) * 1998-05-25 1999-11-25 Siirtec Nigi S P A Processo per la produzione di ammoniaca mediante idrolisi dell'urea
US6093380A (en) * 1998-10-16 2000-07-25 Siirtec Nigi, S.P.A. Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US8776499B2 (en) * 2008-02-25 2014-07-15 Basf Corporation Emission treatment systems and methods using passivated surfaces
EP2386346A1 (en) 2010-05-11 2011-11-16 Stamicarbon B.V. Process for the reduction of ammonia emissions in a urea manufacturing process
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
CN111992033B (zh) * 2020-09-14 2024-10-15 中国华电科工集团有限公司 一种尿素水解反应器的废液回收装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826815A (en) * 1972-06-21 1974-07-30 I Mavrovic Recovery of residual ammonia from weak aqueous solutions thereof

Also Published As

Publication number Publication date
DE2818950C3 (de) 1980-10-16
IT7849083A0 (it) 1978-04-26
NL7804522A (nl) 1979-02-14
JPS5738317B2 (it) 1982-08-14
DE2818950B2 (de) 1980-02-28
BR7802612A (pt) 1979-04-03
CA1128289A (en) 1982-07-27
DE2818950A1 (de) 1979-02-15
US4087513A (en) 1978-05-02
JPS5431963A (en) 1979-03-09
MX148042A (es) 1983-03-08

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