DE2748221C3 - Verfahren zur Herstellung von Harnstoff - Google Patents
Verfahren zur Herstellung von HarnstoffInfo
- Publication number
- DE2748221C3 DE2748221C3 DE2748221A DE2748221A DE2748221C3 DE 2748221 C3 DE2748221 C3 DE 2748221C3 DE 2748221 A DE2748221 A DE 2748221A DE 2748221 A DE2748221 A DE 2748221A DE 2748221 C3 DE2748221 C3 DE 2748221C3
- Authority
- DE
- Germany
- Prior art keywords
- reaction zone
- reaction
- urea
- ammonia
- pressure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 29
- 239000004202 carbamide Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 86
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 62
- 229910021529 ammonia Inorganic materials 0.000 claims description 28
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000003786 synthesis reaction Methods 0.000 claims description 10
- 238000000354 decomposition reaction Methods 0.000 claims description 8
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000376 reactant Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 239000001099 ammonium carbonate Substances 0.000 description 3
- 235000012501 ammonium carbonate Nutrition 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/04—Pressure vessels, e.g. autoclaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
- B01J19/2425—Tubular reactors in parallel
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/18—Details relating to the spatial orientation of the reactor
- B01J2219/185—Details relating to the spatial orientation of the reactor vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/19—Details relating to the geometry of the reactor
- B01J2219/194—Details relating to the geometry of the reactor round
- B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
- B01J2219/1943—Details relating to the geometry of the reactor round circular or disk-shaped cylindrical
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT28779/76A IT1068434B (it) | 1976-10-28 | 1976-10-28 | Procedimento per la produzione di urea con reattore ad alta resa |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2748221A1 DE2748221A1 (de) | 1978-05-03 |
| DE2748221B2 DE2748221B2 (de) | 1979-03-29 |
| DE2748221C3 true DE2748221C3 (de) | 1979-11-22 |
Family
ID=11224168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2748221A Expired DE2748221C3 (de) | 1976-10-28 | 1977-10-27 | Verfahren zur Herstellung von Harnstoff |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5356618A (enExample) |
| BR (1) | BR7707253A (enExample) |
| DE (1) | DE2748221C3 (enExample) |
| IT (1) | IT1068434B (enExample) |
| NL (1) | NL177593C (enExample) |
| SU (1) | SU1072799A3 (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1274362B (it) * | 1995-02-16 | 1997-07-17 | Snam Progetti | Procedimento ad alta resa per la sintesi dell'urea |
-
1976
- 1976-10-28 IT IT28779/76A patent/IT1068434B/it active
-
1977
- 1977-10-27 DE DE2748221A patent/DE2748221C3/de not_active Expired
- 1977-10-27 JP JP12821777A patent/JPS5356618A/ja active Granted
- 1977-10-27 BR BR7707253A patent/BR7707253A/pt unknown
- 1977-10-27 NL NLAANVRAGE7711848,A patent/NL177593C/xx not_active IP Right Cessation
- 1977-10-28 SU SU772537151A patent/SU1072799A3/ru active
Also Published As
| Publication number | Publication date |
|---|---|
| NL7711848A (nl) | 1978-05-03 |
| SU1072799A3 (ru) | 1984-02-07 |
| JPS5356618A (en) | 1978-05-23 |
| JPS625902B2 (enExample) | 1987-02-07 |
| DE2748221A1 (de) | 1978-05-03 |
| BR7707253A (pt) | 1978-07-25 |
| DE2748221B2 (de) | 1979-03-29 |
| IT1068434B (it) | 1985-03-21 |
| NL177593B (nl) | 1985-05-17 |
| NL177593C (nl) | 1985-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69329300T2 (de) | Verfahren zur Spaltung von Cumolhydroperoxid | |
| DE69016540T2 (de) | Verfahren mit hoher Energieleistung zur Herstellung von Harnstoff. | |
| US2848493A (en) | Process for synthesis of urea | |
| DE3136137C2 (de) | Verfahren zur synthese von harnstoff | |
| EP1012114A1 (de) | Verfahren zur herstellung einer wässrigen lösung von freiem hydroxylamin | |
| DE69316433T2 (de) | Verfahren zur Herstellung von Alkylisocyanaten | |
| DE2329733C2 (de) | Verfahren zur Herstellung von Harnstoff | |
| DE1770969C3 (de) | Verfahren zur Rückführung der Abgase der Melaminsynthese in die Hamstoffsynthese | |
| DE2241148B2 (de) | Verfahren zur Herstellung von Harnstoff | |
| DD203715A5 (de) | Verfahren zur herstellung von harnstoff | |
| DE2748221C3 (de) | Verfahren zur Herstellung von Harnstoff | |
| DE2455678B2 (de) | Verfahren zur Herstellung von Tetramethyläthylendiamin | |
| DD201780A5 (de) | Verfahren zur herstellung von harnstoff | |
| DE2053487B2 (de) | Verfahren zur Herstellung von Harnstoff aus den gasförmigen Zersetzungsprodukten der Melamin-Hochdrucksynthese | |
| DE1618852C3 (de) | Verfahren zur Herstellung von Harnstoff | |
| DE2738388C2 (enExample) | ||
| DE69405149T2 (de) | Verfahren und Anlage zur Herstellung von Harnstoff in Reaktionsräumen mit unterschiedlicher Ausbeute | |
| DE1277841B (de) | Verfahren zur Herstellung von Harnstoffen | |
| DE277901T1 (de) | Verfahren und vorrichtung zur herstellung von ammoniumnitrat. | |
| DE2223236C3 (de) | Verfahren und Vorrichtung zur kontinuierlichen Herstellung von ß-Alaiün | |
| DE2950955C2 (de) | Verfahren zur Herstellung von Dimethylformamid | |
| DD203534A1 (de) | Verfahren zur herstellung von dimethylethanolamin | |
| DE19901744A1 (de) | Verfahren zur Herstellung von Formamid | |
| DD204250A5 (de) | Verfahren zur herstellung von harnstoff | |
| DE3117054A1 (de) | Verfahren zur herstellung von chlorcyan aus blausaeure und chlor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |