CH625505A5 - - Google Patents

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Publication number
CH625505A5
CH625505A5 CH1108777A CH1108777A CH625505A5 CH 625505 A5 CH625505 A5 CH 625505A5 CH 1108777 A CH1108777 A CH 1108777A CH 1108777 A CH1108777 A CH 1108777A CH 625505 A5 CH625505 A5 CH 625505A5
Authority
CH
Switzerland
Prior art keywords
decomposer
pressure
condenser
ammonia
urea
Prior art date
Application number
CH1108777A
Other languages
English (en)
Italian (it)
Inventor
Umberto Zardi
Vincenzo Lagana
Original Assignee
Snam Progetti
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 Snam Progetti filed Critical Snam Progetti
Publication of CH625505A5 publication Critical patent/CH625505A5/it

Links

Classifications

    • 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
    • C07C273/04—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 from carbon dioxide and ammonia
    • 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
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C02F11/08—Wet air oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH1108777A 1976-09-09 1977-09-09 CH625505A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT27024/76A IT1068268B (it) 1976-09-09 1976-09-09 Procedimento per la produzione di urea e purificazione delle acque

Publications (1)

Publication Number Publication Date
CH625505A5 true CH625505A5 (de) 1981-09-30

Family

ID=11220800

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1108777A CH625505A5 (de) 1976-09-09 1977-09-09

Country Status (24)

Country Link
US (1) US4314077A (de)
JP (1) JPS6058228B2 (de)
AR (1) AR219502A1 (de)
AU (1) AU511880B2 (de)
BE (1) BE858574A (de)
BR (1) BR7706063A (de)
CA (1) CA1106404A (de)
CH (1) CH625505A5 (de)
CS (1) CS205083B2 (de)
DD (1) DD133091A5 (de)
DE (1) DE2740358C2 (de)
DK (1) DK399577A (de)
ES (1) ES462234A1 (de)
FR (1) FR2364203A1 (de)
GB (1) GB1542371A (de)
IE (1) IE45681B1 (de)
IN (1) IN147029B (de)
IT (1) IT1068268B (de)
LU (1) LU78097A1 (de)
MX (1) MX150529A (de)
NL (1) NL7709968A (de)
PL (1) PL116475B1 (de)
SE (1) SE425972B (de)
YU (1) YU39132B (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1141030B (it) * 1980-08-29 1986-10-01 Snam Progetti Procedimento per la produzione di urea
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.
IT1211125B (it) * 1981-10-16 1989-09-29 Ortu Francesco Composti azotati. processo per la preparazione di
JPS5867661A (ja) * 1981-10-16 1983-04-22 Mitsui Toatsu Chem Inc 尿素合成法
JPS61109760A (ja) * 1984-11-02 1986-05-28 Toyo Eng Corp 尿素製造法
NL8502227A (nl) * 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
NL8502228A (nl) * 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
JPS63112552A (ja) * 1986-10-30 1988-05-17 Toyo Eng Corp 未転化物の分離方法
IT1232669B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la produzione di urea con elevato rendimento energetico.
IT1232670B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.
JP2000054950A (ja) * 1998-06-05 2000-02-22 Hanako Narutomi 常温度熱機関
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
NL1019848C2 (nl) * 2002-01-28 2003-07-30 Dsm Nv Werkwijze voor de bereiding van ureum.
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
US6990691B2 (en) * 2003-07-18 2006-01-31 Depuy Products, Inc. Head gear apparatus
EP1918273A1 (de) * 2006-11-04 2008-05-07 Urea Casale S.A. Verfahren und Anlage für die Herstellung von Harnstoff
EP2128129A1 (de) 2008-05-20 2009-12-02 Urea Casale S.A. Verfahren zur Modernisierung einer Harnstoffproduktionsanlage
EP2199279A1 (de) 2008-12-17 2010-06-23 Urea Casale S.A. Verbesserung der Hochdruck-Schleife in einem Verfahren zur Harnstoffsynthese
EP2397463A1 (de) * 2010-06-16 2011-12-21 Urea Casale SA Verfahren zur Modernisierung einer selbst-strippenden Harnstoffanlage
EP2502881A1 (de) 2011-03-24 2012-09-26 Urea Casale S.A. Verfahren und Anlage zur Ammoniak-Harnstoffherstellung
ITMI20120013A1 (it) 2012-01-09 2013-07-10 Saipem Spa Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper
EP2784062A1 (de) 2013-03-27 2014-10-01 Urea Casale SA Verfahren zur Modernisierung einer selbst-strippenden Harnstoffanlage
US10376859B2 (en) 2016-03-30 2019-08-13 Stamicarbon B.V. Urea production with bi-pressurized synthesis
HRP20201330T1 (hr) 2016-05-03 2020-11-27 Stamicarbon B.V. Kontrola biureta u proizvodnji uree
WO2017192032A1 (en) 2016-05-03 2017-11-09 Stamicarbon B.V. Urea production with controlled biuret
JP6862381B2 (ja) 2018-03-02 2021-04-21 株式会社東芝 半導体装置
JP7088770B2 (ja) 2018-07-26 2022-06-21 東洋エンジニアリング株式会社 尿素製造方法および装置
AU2019405414B2 (en) * 2018-12-21 2022-06-30 Stamicarbon B.V. Urea production process and plant with heat integration in low pressure recovery section
CN113603113B (zh) * 2021-09-17 2024-08-02 浙江建业微电子材料有限公司 一种适用于电子级氨气与氨水的生产装置及其生产方法
CA3252230A1 (en) 2022-02-21 2023-08-24 Stamicarbon B.V. LOW BUIRET UREA PRODUCTION
CN120693319A (zh) * 2023-02-16 2025-09-23 俄罗斯尿素研究与设计股份公司(Niik股份公司) 用于生产尿素的方法和设备
WO2025206949A1 (en) 2024-03-25 2025-10-02 Stamicarbon B.V. Urea stripping process with liquid divider
WO2026080754A1 (en) * 2024-10-10 2026-04-16 The Board Of Trustees Of The Leland Stanford Junior University. Thermal conductivity enhancement in post-diamond-growth apparatuses and processes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE581293A (de) * 1958-08-08 1900-01-01
CH468356A (de) * 1966-04-05 1969-02-15 Inventa Ag Verfahren zur Aufarbeitung des bei der Synthese von Harnstoff aus Ammoniak und Kohlendioxyd in einem Synthesereaktor bei erhöhtem Druck und erhöhter Temperatur erhaltenen Synthesegemisches
US3876696A (en) * 1968-09-03 1975-04-08 Snam Progetti Process for the production of urea having a low carbamate content
US4036878A (en) * 1972-06-12 1977-07-19 Unie Van Kunstmestfabrieken, B.V. Process for preparing urea
US3826815A (en) * 1972-06-21 1974-07-30 I Mavrovic Recovery of residual ammonia from weak aqueous solutions thereof
JPS5535378B2 (de) * 1973-02-14 1980-09-12
US3922222A (en) * 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
IT1014987B (it) * 1974-06-12 1977-04-30 Snam Progetti Procedimento integrato urea am moniaca
US4082797A (en) * 1975-04-23 1978-04-04 Snamprogetti, S.P.A. Method for the condensation of carbammate in urea-synthesis installations
AR206244A1 (es) * 1975-05-06 1976-07-07 Mitsui Toatsu Chemicals Procedimiento para tratar vapor de agua generado al concentrar una solucion acuosa de urea
JPS5268129A (en) * 1975-12-05 1977-06-06 Mitsui Toatsu Chem Inc Recovery of unreacted material and heat on urea synthesis

Also Published As

Publication number Publication date
ES462234A1 (es) 1978-06-01
BR7706063A (pt) 1978-06-06
CS205083B2 (en) 1981-04-30
AR219502A1 (es) 1980-08-29
PL116475B1 (en) 1981-06-30
SE425972B (sv) 1982-11-29
LU78097A1 (de) 1978-01-23
FR2364203B1 (de) 1980-03-14
IT1068268B (it) 1985-03-21
AU2767377A (en) 1979-05-03
MX150529A (es) 1984-05-22
DK399577A (da) 1978-03-10
JPS5334721A (en) 1978-03-31
CA1106404A (en) 1981-08-04
BE858574A (fr) 1978-03-09
YU212577A (en) 1982-08-31
SE7710151L (sv) 1978-03-10
GB1542371A (en) 1979-03-21
FR2364203A1 (fr) 1978-04-07
IE45681L (en) 1978-03-09
DE2740358A1 (de) 1978-03-16
NL7709968A (nl) 1978-03-13
DD133091A5 (de) 1978-12-06
US4314077A (en) 1982-02-02
IE45681B1 (en) 1982-10-20
DE2740358C2 (de) 1982-07-01
AU511880B2 (en) 1980-09-11
JPS6058228B2 (ja) 1985-12-19
YU39132B (en) 1984-06-30
IN147029B (de) 1979-10-27
PL200608A1 (pl) 1978-05-22

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