DD201780A5 - Verfahren zur herstellung von harnstoff - Google Patents
Verfahren zur herstellung von harnstoff Download PDFInfo
- Publication number
- DD201780A5 DD201780A5 DD81232813A DD23281381A DD201780A5 DD 201780 A5 DD201780 A5 DD 201780A5 DD 81232813 A DD81232813 A DD 81232813A DD 23281381 A DD23281381 A DD 23281381A DD 201780 A5 DD201780 A5 DD 201780A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- decomposition
- stage
- ammonia
- urea
- carbon dioxide
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000004202 carbamide Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 67
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 38
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 33
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 23
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 21
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 21
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims abstract description 13
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 101000588924 Anthopleura elegantissima Delta-actitoxin-Ael1a Proteins 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000005979 thermal decomposition reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Saccharide Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT24357/80A IT1141030B (it) | 1980-08-29 | 1980-08-29 | Procedimento per la produzione di urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD201780A5 true DD201780A5 (de) | 1983-08-10 |
Family
ID=11213241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD81232813A DD201780A5 (de) | 1980-08-29 | 1981-08-26 | Verfahren zur herstellung von harnstoff |
Country Status (35)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1211125B (it) * | 1981-10-16 | 1989-09-29 | Ortu Francesco | Composti azotati. processo per la preparazione di |
| DE3364579D1 (en) * | 1982-06-03 | 1986-08-28 | Montedison Spa | Method for avoiding the corrosion of strippers in urea manufacturing plants |
| NL8400840A (nl) * | 1984-03-16 | 1985-10-16 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| IT1209532B (it) * | 1984-04-20 | 1989-08-30 | Snam Progetti | Processo per la sintesi di urea e materiale utilizzato nello stesso. |
| IT1245396B (it) * | 1991-03-22 | 1994-09-20 | Snam Progetti | Procedimento per la produzione di urea ad elevata efficienza energetica |
| USD555828S1 (en) | 2005-08-04 | 2007-11-20 | Colgate-Palmolive Company | Dentifrice |
| US8906187B2 (en) | 2008-06-25 | 2014-12-09 | Colgate-Palmolive Company | Method of making shoulder/nozzles with film barrier liners |
| ITMI20120013A1 (it) | 2012-01-09 | 2013-07-10 | Saipem Spa | Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL101446C (enrdf_load_stackoverflow) * | 1960-04-08 | |||
| US4053508A (en) * | 1960-09-05 | 1977-10-11 | Stamicarbon, N.V. | Process and installation for preparing urea from ammonia and carbon dioxide |
| CH498811A (de) * | 1967-05-22 | 1970-11-15 | Chemical Construction Corp | Verfahren zur Herstellung von Harnstoff aus Ammoniak und Kohlendioxyd |
| BE757274A (fr) * | 1969-10-16 | 1971-03-16 | Snam Progetti | Procede de production d'uree |
| US3922222A (en) * | 1973-02-20 | 1975-11-25 | Cf Ind | Method for treatment of urea crystallizer condensate |
| IT1068268B (it) * | 1976-09-09 | 1985-03-21 | Snam Progetti | Procedimento per la produzione di urea e purificazione delle acque |
| NO150512C (no) * | 1977-05-05 | 1984-10-31 | Montedison Spa | Fremgangsmaate ved fremstilling av urea. |
-
1980
- 1980-08-29 IT IT24357/80A patent/IT1141030B/it active
-
1981
- 1981-07-31 DK DK343381A patent/DK343381A/da not_active Application Discontinuation
- 1981-08-03 ZA ZA815329A patent/ZA815329B/xx unknown
- 1981-08-05 ZW ZW189/81A patent/ZW18981A1/xx unknown
- 1981-08-07 AU AU73904/81A patent/AU544041B2/en not_active Ceased
- 1981-08-07 GB GB8124264A patent/GB2087381B/en not_active Expired
- 1981-08-12 BR BR8105217A patent/BR8105217A/pt unknown
- 1981-08-12 YU YU01946/81A patent/YU194681A/xx unknown
- 1981-08-12 IL IL63560A patent/IL63560A/xx unknown
- 1981-08-13 AT AT0354881A patent/AT377253B/de not_active IP Right Cessation
- 1981-08-18 MW MW31/81A patent/MW3181A1/xx unknown
- 1981-08-20 ZM ZM73/81A patent/ZM7381A1/xx unknown
- 1981-08-21 PH PH26083A patent/PH18034A/en unknown
- 1981-08-22 PL PL1981232761A patent/PL132177B1/pl unknown
- 1981-08-24 NO NO812855A patent/NO151199C/no unknown
- 1981-08-25 TR TR21103A patent/TR21103A/xx unknown
- 1981-08-25 FR FR8116244A patent/FR2489323A1/fr active Granted
- 1981-08-26 DE DE3133765A patent/DE3133765C2/de not_active Expired
- 1981-08-26 DD DD81232813A patent/DD201780A5/de unknown
- 1981-08-26 MX MX188902A patent/MX152570A/es unknown
- 1981-08-26 CS CS816357A patent/CS228529B2/cs unknown
- 1981-08-27 BE BE0/205792A patent/BE890118A/fr not_active IP Right Cessation
- 1981-08-27 LU LU83591A patent/LU83591A1/fr unknown
- 1981-08-27 CA CA000384728A patent/CA1182838A/en not_active Expired
- 1981-08-27 KR KR8103130A patent/KR850000700B1/ko not_active Expired
- 1981-08-28 PT PT73594A patent/PT73594B/pt unknown
- 1981-08-28 RO RO105188A patent/RO82682B/ro unknown
- 1981-08-28 NL NL8104011A patent/NL8104011A/nl not_active Application Discontinuation
- 1981-08-28 SE SE8105105A patent/SE447652B/sv not_active IP Right Cessation
- 1981-08-28 JP JP56134360A patent/JPS5772955A/ja active Pending
- 1981-08-28 AR AR286593A patent/AR226915A1/es active
- 1981-08-28 ES ES505481A patent/ES8301902A1/es not_active Expired
- 1981-08-29 IN IN970/CAL/81A patent/IN153584B/en unknown
- 1981-08-29 EG EG81491A patent/EG15405A/xx active
-
1985
- 1985-12-30 MY MY910/85A patent/MY8500910A/xx unknown
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