ZA733937B - Process for preparing urea - Google Patents
Process for preparing ureaInfo
- Publication number
- ZA733937B ZA733937B ZA733937A ZA733937A ZA733937B ZA 733937 B ZA733937 B ZA 733937B ZA 733937 A ZA733937 A ZA 733937A ZA 733937 A ZA733937 A ZA 733937A ZA 733937 B ZA733937 B ZA 733937B
- Authority
- ZA
- South Africa
- Prior art keywords
- preparing urea
- urea
- preparing
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7207940,A NL172058C (nl) | 1972-06-12 | 1972-06-12 | Werkwijze voor de bereiding van ureum. |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA733937B true ZA733937B (en) | 1974-05-29 |
Family
ID=19816254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA733937A ZA733937B (en) | 1972-06-12 | 1973-06-11 | Process for preparing urea |
Country Status (28)
Country | Link |
---|---|
US (1) | US3936500A (zh) |
JP (1) | JPS5734258B2 (zh) |
AR (1) | AR194803A1 (zh) |
AT (1) | AT347965B (zh) |
AU (1) | AU474236B2 (zh) |
BE (1) | BE800798A (zh) |
BG (1) | BG26810A3 (zh) |
BR (1) | BR7304377D0 (zh) |
CA (1) | CA996136A (zh) |
CS (1) | CS168033B2 (zh) |
DD (1) | DD107023A5 (zh) |
DE (1) | DE2329733C2 (zh) |
ES (1) | ES415803A1 (zh) |
FR (1) | FR2187770B1 (zh) |
GB (1) | GB1428429A (zh) |
HU (1) | HU175487B (zh) |
IE (1) | IE37788B1 (zh) |
IL (1) | IL42469A (zh) |
IN (1) | IN139310B (zh) |
IT (1) | IT985413B (zh) |
NL (1) | NL172058C (zh) |
NO (1) | NO149734C (zh) |
PL (1) | PL89777B1 (zh) |
SE (1) | SE402280B (zh) |
SU (1) | SU474139A3 (zh) |
TR (1) | TR17309A (zh) |
YU (1) | YU156173A (zh) |
ZA (1) | ZA733937B (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE790015A (fr) * | 1971-10-19 | 1973-04-12 | Mavrovic Ivo | Synthese de l'uree avec conversion et recuperation de chaleur ameliorees |
US4036878A (en) * | 1972-06-12 | 1977-07-19 | Unie Van Kunstmestfabrieken, B.V. | Process for preparing urea |
IT1065422B (it) * | 1976-12-23 | 1985-02-25 | Snam Progetti | Processo ammoniaca-urea integrato per la produzione di urea |
NL174548C (nl) * | 1977-05-05 | 1988-05-16 | Montedison Spa | Werkwijze voor het bereiden van ureum door reaktie van ammoniak en kooldioxyde. |
NL7713190A (nl) * | 1977-11-30 | 1979-06-01 | Unie Van Kunstmestfab Bv | Werkwijze en inrichting voor het verwijderen van ammoniumcarbamaat uit een ureumsynthese- oplossing. |
IT1174366B (it) * | 1978-07-24 | 1987-07-01 | Ortu Francesco | Decompositore di carbammato per produzione industriale di urea |
JPS5573651A (en) * | 1978-11-30 | 1980-06-03 | Toyo Eng Corp | Preparation of urea |
JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
US4433146A (en) * | 1982-04-07 | 1984-02-21 | Stamicarbon B.V. | Process for the preparation of melamine |
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. |
US5779861A (en) * | 1993-09-03 | 1998-07-14 | Farmland Industries, Inc. | Method for treating process condensate |
NL1004977C2 (nl) * | 1997-01-13 | 1998-07-15 | Dsm Nv | Methode om de capaciteit van een bestaand ureum proces te verhogen. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL102507C (zh) * | 1958-08-08 | 1900-01-01 | ||
NL101446C (zh) * | 1960-04-08 | |||
US3544628A (en) * | 1965-09-20 | 1970-12-01 | Pullman Inc | Urea synthesis |
-
1972
- 1972-06-12 NL NLAANVRAGE7207940,A patent/NL172058C/xx not_active IP Right Cessation
-
1973
- 1973-06-08 NO NO2412/73A patent/NO149734C/no unknown
- 1973-06-08 IL IL42469A patent/IL42469A/en unknown
- 1973-06-11 ZA ZA733937A patent/ZA733937B/xx unknown
- 1973-06-11 ES ES415803A patent/ES415803A1/es not_active Expired
- 1973-06-11 SU SU1929884A patent/SU474139A3/ru active
- 1973-06-11 HU HU73KU472A patent/HU175487B/hu unknown
- 1973-06-11 IT IT50677/73A patent/IT985413B/it active
- 1973-06-11 BG BG7323852A patent/BG26810A3/xx unknown
- 1973-06-11 CA CA173,671A patent/CA996136A/en not_active Expired
- 1973-06-12 JP JP6625473A patent/JPS5734258B2/ja not_active Expired
- 1973-06-12 CS CS734251A patent/CS168033B2/cs unknown
- 1973-06-12 YU YU01561/73A patent/YU156173A/xx unknown
- 1973-06-12 FR FR7321250A patent/FR2187770B1/fr not_active Expired
- 1973-06-12 TR TR17309A patent/TR17309A/xx unknown
- 1973-06-12 GB GB2787573A patent/GB1428429A/en not_active Expired
- 1973-06-12 DD DD171486A patent/DD107023A5/xx unknown
- 1973-06-12 BE BE132170A patent/BE800798A/xx not_active IP Right Cessation
- 1973-06-12 BR BR4377/73A patent/BR7304377D0/pt unknown
- 1973-06-12 SE SE7308266A patent/SE402280B/xx unknown
- 1973-06-12 DE DE2329733A patent/DE2329733C2/de not_active Expired
- 1973-06-12 AU AU56856/73A patent/AU474236B2/en not_active Expired
- 1973-06-12 US US05/369,391 patent/US3936500A/en not_active Expired - Lifetime
- 1973-06-12 AR AR248535A patent/AR194803A1/es active
- 1973-06-12 AT AT512273A patent/AT347965B/de not_active IP Right Cessation
- 1973-06-12 IE IE953/73A patent/IE37788B1/xx unknown
- 1973-06-12 PL PL1973163288A patent/PL89777B1/pl unknown
- 1973-07-02 IN IN1535/CAL/73A patent/IN139310B/en unknown
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