CH625505A5 - - Google Patents

Download PDF

Info

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 (zh)

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 (zh) 1981-09-30

Family

ID=11220800

Family Applications (1)

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

Country Status (24)

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

Families Citing this family (31)

* 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
IT1232670B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.
IT1232669B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la produzione di urea con elevato rendimento energetico.
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 (en) * 2006-11-04 2008-05-07 Urea Casale S.A. Process for urea production and related plant
EP2128129A1 (en) 2008-05-20 2009-12-02 Urea Casale S.A. Method for the modernization of a urea production plant
EP2199279A1 (en) 2008-12-17 2010-06-23 Urea Casale S.A. Improvement to the high-pressure loop in a process for synthesis of urea
EP2397463A1 (en) 2010-06-16 2011-12-21 Urea Casale SA Method for revamping a self-stripping urea plant
EP2502881A1 (en) 2011-03-24 2012-09-26 Urea Casale S.A. Process and plant for ammonia-urea production
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 (en) 2013-03-27 2014-10-01 Urea Casale SA Method for revamping a self-stripping urea plant
US10376859B2 (en) 2016-03-30 2019-08-13 Stamicarbon B.V. Urea production with bi-pressurized synthesis
LT3452212T (lt) 2016-05-03 2020-04-10 Stamicarbon B.V. Karbamido gamyba su kontroliuojamu biuretu
PL3452444T3 (pl) 2016-05-03 2020-12-14 Stamicarbon B.V. Kontrola biuretu w produkcji mocznika
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
WO2024172703A1 (ru) * 2023-02-16 2024-08-22 Акционерное общество "Научно-исследовательский и проектный институт карбамида и продуктов органического синтеза" (АО "НИИК") Способ и установка для получения карбамида

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE581293A (zh) * 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 (zh) * 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
CA1106404A (en) 1981-08-04
MX150529A (es) 1984-05-22
IE45681B1 (en) 1982-10-20
AR219502A1 (es) 1980-08-29
YU39132B (en) 1984-06-30
PL200608A1 (pl) 1978-05-22
DE2740358C2 (de) 1982-07-01
IE45681L (en) 1978-03-09
DE2740358A1 (de) 1978-03-16
PL116475B1 (en) 1981-06-30
BR7706063A (pt) 1978-06-06
ES462234A1 (es) 1978-06-01
YU212577A (en) 1982-08-31
IT1068268B (it) 1985-03-21
US4314077A (en) 1982-02-02
SE7710151L (sv) 1978-03-10
AU2767377A (en) 1979-05-03
CS205083B2 (en) 1981-04-30
FR2364203B1 (zh) 1980-03-14
BE858574A (fr) 1978-03-09
DK399577A (da) 1978-03-10
DD133091A5 (de) 1978-12-06
GB1542371A (en) 1979-03-21
AU511880B2 (en) 1980-09-11
JPS5334721A (en) 1978-03-31
JPS6058228B2 (ja) 1985-12-19
SE425972B (sv) 1982-11-29
IN147029B (zh) 1979-10-27
FR2364203A1 (fr) 1978-04-07
LU78097A1 (zh) 1978-01-23
NL7709968A (nl) 1978-03-13

Similar Documents

Publication Publication Date Title
CH625505A5 (zh)
US4053507A (en) Method of recovering unreacted materials and heat in urea synthesis
EP1203765B1 (en) Process for the synthesis of urea
CN109890788B (zh) 尿素与尿素-硝酸铵的集成工艺
US4539077A (en) Process for the preparation of urea
EP0053410A1 (en) Process for the removal of urea, ammonia and carbon dioxide from dilute aqueous solutions
JPS60204748A (ja) ジニトロトルエンの製造法
SU1494864A3 (ru) Способ получени мочевины
CA1078583A (en) Process for preparing sulfur dioxide
US3825657A (en) Process for the cracking of sulfuric acid
US4003801A (en) Treatment of water vapor generated in concentrating an aqueous urea solution
CN108290080B (zh) 利用高温汽提的尿素工艺
KR870001143B1 (ko) 요소의 제조방법
US6649795B2 (en) Process for decomposing a carbamate aqueous solution coming from the urea recovery section of a urea production plant
CH649542A5 (it) Procedimento per l'assorbimento isotermico dell'ossido di etilene mediante l'impiego di assorbitori a film.
JPS6369712A (ja) 四塩化チタンの製造方法
SU1153825A3 (ru) Способ получени мочевины
US3966891A (en) Process for manufacturing sulfur from a solution of sodium sulfite
US3989809A (en) Process for the recovery of sulfur
US3929878A (en) Decomposition of ammonium carbamate
GB1558659A (en) Methods of stripping ammonia from ammoniacal solutions
CH622006A5 (en) Process for the condensation of carbamate in urea synthesis plants
SU692257A1 (ru) Способ получени мочевины
US20240217924A1 (en) Urea production process and plant
KR800000645B1 (ko) 요소수용액 농축공정으로부터 수증기의 처리방법

Legal Events

Date Code Title Description
PL Patent ceased