DD202536A5 - Verfahren zur entfernung von harnstoff, ammoniak und kohlendioxid aus verduennten waessrigen loesungen - Google Patents

Verfahren zur entfernung von harnstoff, ammoniak und kohlendioxid aus verduennten waessrigen loesungen Download PDF

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Publication number
DD202536A5
DD202536A5 DD82237797A DD23779782A DD202536A5 DD 202536 A5 DD202536 A5 DD 202536A5 DD 82237797 A DD82237797 A DD 82237797A DD 23779782 A DD23779782 A DD 23779782A DD 202536 A5 DD202536 A5 DD 202536A5
Authority
DD
German Democratic Republic
Prior art keywords
ammonia
urea
carbon dioxide
reaction column
item
Prior art date
Application number
DD82237797A
Other languages
German (de)
English (en)
Inventor
Petrus J Van Massau
Adolphe M Douwes
Original Assignee
Unie Van Kunstmestfab Bv
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 Unie Van Kunstmestfab Bv filed Critical Unie Van Kunstmestfab Bv
Publication of DD202536A5 publication Critical patent/DD202536A5/de

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Classifications

    • 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
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/10—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds combined with the synthesis of ammonia

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treating Waste Gases (AREA)
DD82237797A 1981-02-28 1982-03-01 Verfahren zur entfernung von harnstoff, ammoniak und kohlendioxid aus verduennten waessrigen loesungen DD202536A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8100989A NL8100989A (nl) 1981-02-28 1981-02-28 Werkwijze voor het verwijderen van ureum, ammoniak en kooldioxide uit verdunde waterige oplossingen.

Publications (1)

Publication Number Publication Date
DD202536A5 true DD202536A5 (de) 1983-09-21

Family

ID=19837090

Family Applications (1)

Application Number Title Priority Date Filing Date
DD82237797A DD202536A5 (de) 1981-02-28 1982-03-01 Verfahren zur entfernung von harnstoff, ammoniak und kohlendioxid aus verduennten waessrigen loesungen

Country Status (10)

Country Link
US (1) US4410503A (ja)
EP (1) EP0059516B1 (ja)
JP (1) JPS57160912A (ja)
AT (1) ATE14574T1 (ja)
CA (1) CA1176434A (ja)
DD (1) DD202536A5 (ja)
DE (1) DE3264988D1 (ja)
EG (1) EG15479A (ja)
IN (1) IN157071B (ja)
NL (1) NL8100989A (ja)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1232670B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.
EP0538848A1 (en) * 1991-10-23 1993-04-28 Urea Casale S.A. Process and equipment for the hydrolysis of residual urea in the water from urea synthesis plants
US5223238A (en) * 1992-01-16 1993-06-29 The M. W. Kellogg Company Method for treating ammonia and urea condensates
US5525237A (en) * 1993-12-23 1996-06-11 United Technologies Corporation Process for removing free and dissolved CO2 from aqueous solutions
US5518626A (en) * 1993-12-23 1996-05-21 United Technologies Corporation Process employing thermally sterilizable aqueous polishing agents
US5597454A (en) * 1995-04-06 1997-01-28 Lee; Jing M. Process for producing urea
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
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
US6755029B2 (en) 2002-01-08 2004-06-29 Marvin Ralph Bertrand, Jr. Ammonia separator and neutralizer
US7272953B2 (en) * 2002-01-08 2007-09-25 Masterson James A Method and apparatus for separating and neutralizing ammonia
US20040177644A1 (en) * 2002-01-08 2004-09-16 Masterson James A. Method and apparatus for separating and neutralizing ammonia
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
CN100400430C (zh) * 2006-05-18 2008-07-09 刘国胜 尿素工艺冷凝液节能净化回收工艺
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
EP2153880A1 (en) * 2008-07-31 2010-02-17 Urea Casale S.A. Process and plant for the production of a urea solution for use in SCR process for reduction of Nox
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
CN107272756B (zh) * 2017-07-21 2023-04-18 四川金象赛瑞化工股份有限公司 一种新型尿素氨/碳比控制装置
CN112723629A (zh) * 2020-11-10 2021-04-30 苏州西热节能环保技术有限公司 一种尿素制氨废液处理系统
WO2023156360A1 (de) 2022-02-18 2023-08-24 Thyssenkrupp Industrial Solutions Ag Optimierte prozesskondensataufbereitung
LU102914B1 (de) * 2022-02-18 2023-08-18 Thyssenkrupp Ind Solutions Ag Optimierte Prozesskondensataufbereitung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361534A (en) * 1965-03-31 1968-01-02 Union Carbide Corp Hydrogen production by steam reforming
US3636106A (en) * 1968-09-12 1972-01-18 Chemical Construction Corp Process for urea synthesis
US3922222A (en) * 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
JPS5268129A (en) * 1975-12-05 1977-06-06 Mitsui Toatsu Chem Inc Recovery of unreacted material and heat on urea synthesis
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
US4260461A (en) * 1977-07-26 1981-04-07 Pottharst Jr John E Vapor compression distillation apparatus and method
US4260462A (en) * 1978-05-26 1981-04-07 United States Steel Corporation Process for separating acid gases and ammonia from dilute aqueous solutions thereof

Also Published As

Publication number Publication date
EG15479A (en) 1986-12-30
NL8100989A (nl) 1982-09-16
IN157071B (ja) 1986-01-11
CA1176434A (en) 1984-10-23
EP0059516A1 (en) 1982-09-08
EP0059516B1 (en) 1985-07-31
ATE14574T1 (de) 1985-08-15
US4410503A (en) 1983-10-18
JPS57160912A (en) 1982-10-04
DE3264988D1 (en) 1985-09-05

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