CH625505A5 - - Google Patents
Download PDFInfo
- 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
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)
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 (fi) | 1981-09-30 |
Family
ID=11220800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1108777A CH625505A5 (fi) | 1976-09-09 | 1977-09-09 |
Country Status (24)
| Country | Link |
|---|---|
| US (1) | US4314077A (fi) |
| JP (1) | JPS6058228B2 (fi) |
| AR (1) | AR219502A1 (fi) |
| AU (1) | AU511880B2 (fi) |
| BE (1) | BE858574A (fi) |
| BR (1) | BR7706063A (fi) |
| CA (1) | CA1106404A (fi) |
| CH (1) | CH625505A5 (fi) |
| CS (1) | CS205083B2 (fi) |
| DD (1) | DD133091A5 (fi) |
| DE (1) | DE2740358C2 (fi) |
| DK (1) | DK399577A (fi) |
| ES (1) | ES462234A1 (fi) |
| FR (1) | FR2364203A1 (fi) |
| GB (1) | GB1542371A (fi) |
| IE (1) | IE45681B1 (fi) |
| IN (1) | IN147029B (fi) |
| IT (1) | IT1068268B (fi) |
| LU (1) | LU78097A1 (fi) |
| MX (1) | MX150529A (fi) |
| NL (1) | NL7709968A (fi) |
| PL (1) | PL116475B1 (fi) |
| SE (1) | SE425972B (fi) |
| YU (1) | YU39132B (fi) |
Families Citing this family (30)
| 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 |
| NL8502228A (nl) * | 1985-08-12 | 1987-03-02 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| NL8502227A (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 (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 |
| EP3436430B1 (en) | 2016-03-30 | 2020-09-16 | Stamicarbon B.V. | Urea production with bi-pressurized synthesis |
| MY179668A (en) | 2016-05-03 | 2020-11-11 | Stamicarbon | Controlling biuret in urea production |
| LT3452212T (lt) | 2016-05-03 | 2020-04-10 | Stamicarbon B.V. | Karbamido gamyba su kontroliuojamu biuretu |
| 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 |
| CN113603113A (zh) * | 2021-09-17 | 2021-11-05 | 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 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL102507C (fi) * | 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 (fi) * | 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 |
| GB1506129A (en) * | 1975-04-23 | 1978-04-05 | Snam Progetti | Formation of ammonium carbamate solution |
| 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 |
-
1976
- 1976-09-09 IT IT27024/76A patent/IT1068268B/it active
-
1977
- 1977-08-04 CA CA284,053A patent/CA1106404A/en not_active Expired
- 1977-08-05 AU AU27673/77A patent/AU511880B2/en not_active Expired
- 1977-08-18 IN IN1283/CAL/77A patent/IN147029B/en unknown
- 1977-08-31 CS CS775684A patent/CS205083B2/cs unknown
- 1977-08-31 MX MX170424A patent/MX150529A/es unknown
- 1977-09-01 PL PL1977200608A patent/PL116475B1/pl not_active IP Right Cessation
- 1977-09-02 ES ES462234A patent/ES462234A1/es not_active Expired
- 1977-09-05 JP JP52105969A patent/JPS6058228B2/ja not_active Expired
- 1977-09-06 YU YU02125/77A patent/YU39132B/xx unknown
- 1977-09-07 LU LU78097A patent/LU78097A1/xx unknown
- 1977-09-07 DE DE2740358A patent/DE2740358C2/de not_active Expired
- 1977-09-07 DD DD7700200918A patent/DD133091A5/xx unknown
- 1977-09-08 DK DK399577A patent/DK399577A/da not_active Application Discontinuation
- 1977-09-08 GB GB7737615A patent/GB1542371A/en not_active Expired
- 1977-09-08 FR FR7727215A patent/FR2364203A1/fr active Granted
- 1977-09-09 SE SE7710151A patent/SE425972B/xx not_active IP Right Cessation
- 1977-09-09 AR AR269158A patent/AR219502A1/es active
- 1977-09-09 CH CH1108777A patent/CH625505A5/it not_active IP Right Cessation
- 1977-09-09 BE BE180806A patent/BE858574A/xx not_active IP Right Cessation
- 1977-09-09 BR BR7706063A patent/BR7706063A/pt unknown
- 1977-09-09 IE IE1872/77A patent/IE45681B1/en unknown
- 1977-09-09 NL NL7709968A patent/NL7709968A/xx not_active Application Discontinuation
-
1980
- 1980-12-15 US US06/216,303 patent/US4314077A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE2740358A1 (de) | 1978-03-16 |
| DD133091A5 (de) | 1978-12-06 |
| YU39132B (en) | 1984-06-30 |
| AU511880B2 (en) | 1980-09-11 |
| DE2740358C2 (de) | 1982-07-01 |
| PL200608A1 (pl) | 1978-05-22 |
| FR2364203B1 (fi) | 1980-03-14 |
| IN147029B (fi) | 1979-10-27 |
| CA1106404A (en) | 1981-08-04 |
| IE45681L (en) | 1978-03-09 |
| US4314077A (en) | 1982-02-02 |
| SE7710151L (sv) | 1978-03-10 |
| NL7709968A (nl) | 1978-03-13 |
| YU212577A (en) | 1982-08-31 |
| ES462234A1 (es) | 1978-06-01 |
| IT1068268B (it) | 1985-03-21 |
| LU78097A1 (fi) | 1978-01-23 |
| AU2767377A (en) | 1979-05-03 |
| IE45681B1 (en) | 1982-10-20 |
| GB1542371A (en) | 1979-03-21 |
| MX150529A (es) | 1984-05-22 |
| JPS5334721A (en) | 1978-03-31 |
| JPS6058228B2 (ja) | 1985-12-19 |
| AR219502A1 (es) | 1980-08-29 |
| DK399577A (da) | 1978-03-10 |
| PL116475B1 (en) | 1981-06-30 |
| BR7706063A (pt) | 1978-06-06 |
| FR2364203A1 (fr) | 1978-04-07 |
| CS205083B2 (en) | 1981-04-30 |
| BE858574A (fr) | 1978-03-09 |
| SE425972B (sv) | 1982-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH625505A5 (fi) | ||
| US4053507A (en) | Method of recovering unreacted materials and heat in urea synthesis | |
| EP0093466B1 (en) | Process for the preparation of urea | |
| CN109890788B (zh) | 尿素与尿素-硝酸铵的集成工艺 | |
| EP0053410A1 (en) | Process for the removal of urea, ammonia and carbon dioxide from dilute aqueous solutions | |
| 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 | |
| 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 | |
| US6649795B2 (en) | Process for decomposing a carbamate aqueous solution coming from the urea recovery section of a urea production plant | |
| 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 | |
| KR790001171B1 (ko) | 요소합성에 있어서의 미반응물 및 열의 회수법 | |
| US4317807A (en) | Air cooling during the production of phosphoric acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |