DD262806A5 - Verfahren zur konzentrierung einer harnstoffloesung und vorrichtung zur durchfuehrung des verfahrens - Google Patents
Verfahren zur konzentrierung einer harnstoffloesung und vorrichtung zur durchfuehrung des verfahrens Download PDFInfo
- Publication number
- DD262806A5 DD262806A5 DD87308579A DD30857987A DD262806A5 DD 262806 A5 DD262806 A5 DD 262806A5 DD 87308579 A DD87308579 A DD 87308579A DD 30857987 A DD30857987 A DD 30857987A DD 262806 A5 DD262806 A5 DD 262806A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- gas mixture
- urea solution
- tube bundle
- heating zone
- tubes
- 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
- 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
- B01D1/065—Evaporators with vertical tubes by film evaporating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/04—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Fertilizers (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Saccharide Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8602769A NL8602769A (nl) | 1986-11-03 | 1986-11-03 | Werkwijze voor het concentreren van een ureumoplossing en inrichting voor het uitvoeren van de werkwijze. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD262806A5 true DD262806A5 (de) | 1988-12-14 |
Family
ID=19848768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD87308579A DD262806A5 (de) | 1986-11-03 | 1987-11-02 | Verfahren zur konzentrierung einer harnstoffloesung und vorrichtung zur durchfuehrung des verfahrens |
Country Status (29)
| Country | Link |
|---|---|
| US (1) | US4866207A (zh) |
| EP (1) | EP0266839A1 (zh) |
| JP (1) | JPS63126858A (zh) |
| KR (1) | KR880006176A (zh) |
| CN (1) | CN1022321C (zh) |
| AR (1) | AR245383A1 (zh) |
| AU (1) | AU604069B2 (zh) |
| BG (1) | BG60206B2 (zh) |
| BR (1) | BR8705824A (zh) |
| CA (1) | CA1333912C (zh) |
| DD (1) | DD262806A5 (zh) |
| EG (1) | EG18504A (zh) |
| FI (1) | FI874808A (zh) |
| HU (1) | HUT44949A (zh) |
| IL (1) | IL84340A0 (zh) |
| IN (1) | IN170336B (zh) |
| MA (1) | MA21099A1 (zh) |
| MX (1) | MX168831B (zh) |
| NL (1) | NL8602769A (zh) |
| NO (1) | NO874558L (zh) |
| NZ (1) | NZ222369A (zh) |
| OA (1) | OA08770A (zh) |
| PL (1) | PL268572A1 (zh) |
| PT (1) | PT86068A (zh) |
| SU (1) | SU1736335A3 (zh) |
| TN (1) | TNSN87125A1 (zh) |
| TR (1) | TR24027A (zh) |
| ZA (1) | ZA878213B (zh) |
| ZW (1) | ZW19987A1 (zh) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH679485A5 (zh) * | 1989-12-29 | 1992-02-28 | Ammonia Casale Sa | |
| DE4034074A1 (de) * | 1990-10-26 | 1992-04-30 | Huels Chemische Werke Ag | Verfahren zur herstellung von alkylglycosiden und alkyloligoglycosiden |
| DE19961040A1 (de) | 1999-12-16 | 2001-06-21 | Basf Ag | Thermoplastische Formmassen mit verbessertem Verarbeitungsverhalten auf Basis von Polyarylenethersulfonen und Polyamiden |
| 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 |
| MY190234A (en) | 2012-05-03 | 2022-04-06 | Stamicarbon | Method and apparatus for the production of urea from ammonia and carbon dioxide |
| UA123548C2 (uk) | 2016-05-03 | 2021-04-21 | Стамікарбон Б.В. | Виробництво карбаміду з контрольованим біуретом |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE908028C (de) * | 1948-11-03 | 1954-04-01 | Hoechst Ag | Verfahren und Saeule fuer Stoffumsatz und Waermeaustauscher |
| US2944966A (en) * | 1954-02-19 | 1960-07-12 | Allen G Eickmeyer | Method for separation of fluid mixtures |
| FR1111540A (fr) * | 1954-07-19 | 1956-03-01 | échangeur thermique permettant l'utilisation pratique de l'énergie de dilution des solutions concentrées | |
| FR1255949A (fr) * | 1959-11-12 | 1961-03-17 | Procédé et dispositifs de distillation par évaporation moléculaire à multiple effet | |
| US3137725A (en) * | 1960-02-11 | 1964-06-16 | Chemical Construction Corp | Heat recovery in urea synthesis process |
| US2998060A (en) * | 1960-08-03 | 1961-08-29 | Albert W Eckstrom | High temperature method and evaporator for concentrating solutions |
| SU144842A1 (ru) * | 1960-10-25 | 1961-11-30 | Б.Г. Мельников | Способ удалени аммиака и углекислого газа из продуктов синтеза мочевины |
| NL6414630A (zh) * | 1964-12-16 | 1966-06-17 | ||
| US4341640A (en) * | 1976-09-27 | 1982-07-27 | Standard Oil Company | Urea hydrolysis |
| US4231951A (en) * | 1978-02-08 | 1980-11-04 | Minnesota Mining And Manufacturing Company | Complex salt photoinitiator |
| JPS5573651A (en) * | 1978-11-30 | 1980-06-03 | Toyo Eng Corp | Preparation of urea |
| JPS5826909B2 (ja) * | 1979-09-14 | 1983-06-06 | 東洋エンジニアリング株式会社 | 尿素水溶液の濃縮方法 |
| JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| IT1163795B (it) * | 1983-07-18 | 1987-04-08 | Montedison Spa | Apparecchio per lo strippaggio dell'ammoniaca dalle soluzioni provenienti dalla sintesi dell'urea |
| NL8303888A (nl) * | 1983-11-13 | 1985-06-03 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| DE3565532D1 (en) * | 1984-05-19 | 1988-11-17 | Ammonia Casale Sa | Process for the preparation of urea |
| JPH06110547A (ja) * | 1992-09-29 | 1994-04-22 | Toshiba Corp | シーケンス実績データ収集装置 |
-
1986
- 1986-11-03 NL NL8602769A patent/NL8602769A/nl not_active Application Discontinuation
-
1987
- 1987-01-23 US US07/006,185 patent/US4866207A/en not_active Expired - Lifetime
- 1987-10-21 IN IN761/MAS/87A patent/IN170336B/en unknown
- 1987-10-28 MX MX009005A patent/MX168831B/es unknown
- 1987-10-30 NZ NZ222369A patent/NZ222369A/xx unknown
- 1987-10-30 BR BR8705824A patent/BR8705824A/pt not_active Application Discontinuation
- 1987-10-30 CA CA000550625A patent/CA1333912C/en not_active Expired - Lifetime
- 1987-11-01 EG EG625/87D patent/EG18504A/xx active
- 1987-11-02 EP EP87202109A patent/EP0266839A1/en not_active Ceased
- 1987-11-02 IL IL84340A patent/IL84340A0/xx unknown
- 1987-11-02 BG BG81639A patent/BG60206B2/bg unknown
- 1987-11-02 TR TR87/0748A patent/TR24027A/xx unknown
- 1987-11-02 SU SU874203645A patent/SU1736335A3/ru active
- 1987-11-02 JP JP62275873A patent/JPS63126858A/ja active Pending
- 1987-11-02 CN CN87107625A patent/CN1022321C/zh not_active Expired - Lifetime
- 1987-11-02 DD DD87308579A patent/DD262806A5/de unknown
- 1987-11-02 ZA ZA878213A patent/ZA878213B/xx unknown
- 1987-11-02 FI FI874808A patent/FI874808A/fi not_active Application Discontinuation
- 1987-11-02 MA MA21340A patent/MA21099A1/fr unknown
- 1987-11-02 AU AU80582/87A patent/AU604069B2/en not_active Ceased
- 1987-11-02 AR AR87309184A patent/AR245383A1/es active
- 1987-11-02 NO NO874558A patent/NO874558L/no unknown
- 1987-11-02 HU HU874917A patent/HUT44949A/hu unknown
- 1987-11-03 TN TNTNSN87125A patent/TNSN87125A1/fr unknown
- 1987-11-03 OA OA59218A patent/OA08770A/xx unknown
- 1987-11-03 PT PT86068A patent/PT86068A/pt not_active Application Discontinuation
- 1987-11-03 KR KR870012304A patent/KR880006176A/ko not_active Application Discontinuation
- 1987-11-03 PL PL26857287A patent/PL268572A1/xx unknown
- 1987-11-03 ZW ZW199/87A patent/ZW19987A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX168831B (es) | 1993-06-10 |
| EG18504A (en) | 1993-04-30 |
| JPS63126858A (ja) | 1988-05-30 |
| NZ222369A (en) | 1990-06-26 |
| EP0266839A1 (en) | 1988-05-11 |
| MA21099A1 (fr) | 1988-07-01 |
| NL8602769A (nl) | 1988-06-01 |
| AU8058287A (en) | 1988-05-05 |
| CA1333912C (en) | 1995-01-10 |
| OA08770A (en) | 1989-03-31 |
| US4866207A (en) | 1989-09-12 |
| FI874808A0 (fi) | 1987-11-02 |
| CN87107625A (zh) | 1988-05-11 |
| IL84340A0 (en) | 1988-04-29 |
| AR245383A1 (es) | 1994-01-31 |
| FI874808A (fi) | 1988-05-04 |
| NO874558D0 (no) | 1987-11-02 |
| PT86068A (pt) | 1988-12-15 |
| TNSN87125A1 (fr) | 1990-01-01 |
| BR8705824A (pt) | 1988-06-28 |
| HUT44949A (en) | 1988-05-30 |
| PL268572A1 (en) | 1988-09-01 |
| ZA878213B (en) | 1988-04-28 |
| SU1736335A3 (ru) | 1992-05-23 |
| TR24027A (tr) | 1991-02-04 |
| IN170336B (zh) | 1992-03-14 |
| KR880006176A (ko) | 1988-07-21 |
| CN1022321C (zh) | 1993-10-06 |
| ZW19987A1 (en) | 1988-02-03 |
| BG60206B2 (en) | 1993-12-30 |
| NO874558L (no) | 1988-05-04 |
| AU604069B2 (en) | 1990-12-06 |
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