DE953876C - Verfahren zur Herstellung von Harnstoff - Google Patents
Verfahren zur Herstellung von HarnstoffInfo
- Publication number
- DE953876C DE953876C DEST8050A DEST008050A DE953876C DE 953876 C DE953876 C DE 953876C DE ST8050 A DEST8050 A DE ST8050A DE ST008050 A DEST008050 A DE ST008050A DE 953876 C DE953876 C DE 953876C
- Authority
- DE
- Germany
- Prior art keywords
- chromium
- synthesis
- oxygen
- amount
- urea
- 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 10
- 239000004202 carbamide Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 17
- 238000003786 synthesis reaction Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 235000011089 carbon dioxide Nutrition 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 150000003464 sulfur compounds Chemical class 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 13
- 239000007800 oxidant agent Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- -1 H 2 O 2 and BaO 2 Chemical class 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 150000003463 sulfur Chemical class 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL329362X | 1953-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE953876C true DE953876C (de) | 1956-12-06 |
Family
ID=19784292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEST8050A Expired DE953876C (de) | 1953-04-15 | 1954-04-14 | Verfahren zur Herstellung von Harnstoff |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US2727069A (en, 2012) |
| BE (1) | BE527914A (en, 2012) |
| CH (1) | CH329362A (en, 2012) |
| CY (1) | CY266A (en, 2012) |
| DE (1) | DE953876C (en, 2012) |
| FR (1) | FR1098397A (en, 2012) |
| GB (1) | GB739876A (en, 2012) |
| MY (1) | MY6400004A (en, 2012) |
| NL (1) | NL77361C (en, 2012) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1033197B (de) * | 1954-05-17 | 1958-07-03 | Inventa Ag | Verfahren zur Verminderung der Korrosion bei der Harnstoffsynthese |
| DE1244789B (de) * | 1963-05-29 | 1967-07-20 | Allied Chem | Verfahren zum Reinigen von rohem Melamin |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3137724A (en) * | 1956-04-16 | 1964-06-16 | Lonza Electric & Chem Works | Process for the pressure synthesis of urea |
| US2999008A (en) * | 1957-03-20 | 1961-09-05 | Vulcan Cincinnati Inc | Purification of carbon dioxide for urea synthesis |
| US3251843A (en) * | 1964-03-02 | 1966-05-17 | Nissan Chemical Ind Ltd | Melamine production improvement |
| US3488293A (en) * | 1964-10-16 | 1970-01-06 | Allied Chem | Prevention of corrosion due to urea fertilizer effluent |
| NL164328C (nl) * | 1970-04-02 | 1980-12-15 | Stamicarbon | Werkwijze voor het verhogen van de weerstand tegen cor- rosie van austenitische chroom-nikkelstalen, alsmede werkwijze voor de bereiding van ureum in apperatuur waarvan de weerstand tegen corrosie aldus is verhoogd. |
| DE3364579D1 (en) * | 1982-06-03 | 1986-08-28 | Montedison Spa | Method for avoiding the corrosion of strippers in urea manufacturing plants |
| FR2570083B1 (fr) * | 1984-09-07 | 1989-09-29 | Creusot Loire | Elements metalliques utilisables dans les installations de synthese de l'uree |
| DE4424638A1 (de) * | 1994-07-13 | 1996-04-11 | Univ Dresden Tech | Verfahren zur Herstellung von oxidischen Korrosionsschutzschichten auf hoch chromlegierten Stählen |
| DE19544224B4 (de) * | 1995-11-28 | 2004-10-14 | Alstom | Chemische Fahrweise eines Wasser/Dampf-Kreislaufes |
| NL1014512C2 (nl) | 2000-02-28 | 2001-08-29 | Dsm Nv | Methode voor het lassen van duplex staal. |
| WO2003018861A1 (en) * | 2001-08-31 | 2003-03-06 | Dsm Ip Assets B.V. | Process for rendering metals corrosion resistant |
| EP2107051A1 (en) | 2008-04-02 | 2009-10-07 | DSM IP Assets B.V. | Process for inreasing the capacity of an existing urea plant |
| EP2123633A1 (en) * | 2008-05-19 | 2009-11-25 | DSM IP Assets B.V. | Process for the production of urea from ammonia and carbon dioxide |
| EP2123634A1 (en) * | 2008-05-19 | 2009-11-25 | DSM IP Assets B.V. | Process for the production of urea from ammonia and carbon dioxide |
| ITMI20120013A1 (it) | 2012-01-09 | 2013-07-10 | Saipem Spa | Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper |
| JPWO2014192823A1 (ja) * | 2013-05-28 | 2017-02-23 | 東洋エンジニアリング株式会社 | 尿素合成方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE301751C (en, 2012) * | ||||
| FR958503A (en, 2012) * | 1950-03-13 | |||
| DE812909C (de) * | 1947-06-27 | 1951-09-06 | Basf Ag | Verfahren zur Herstellung von Harnstoff |
| DE860487C (de) * | 1946-11-15 | 1952-12-22 | Basf Ag | Verfahren zur Herstellung von Harnstoff aus Kohlendioxyd und Ammoniak |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680766A (en) * | 1951-03-23 | 1954-06-08 | Du Pont | Method of inhibiting corrosion in urea synthesis reactors |
-
0
- BE BE527914D patent/BE527914A/xx unknown
- NL NL77361D patent/NL77361C/xx active
-
1954
- 1954-04-09 US US422263A patent/US2727069A/en not_active Expired - Lifetime
- 1954-04-13 FR FR1098397D patent/FR1098397A/fr not_active Expired
- 1954-04-13 CH CH329362D patent/CH329362A/de unknown
- 1954-04-14 GB GB11048/54A patent/GB739876A/en not_active Expired
- 1954-04-14 DE DEST8050A patent/DE953876C/de not_active Expired
-
1963
- 1963-10-02 CY CY26663A patent/CY266A/xx unknown
-
1964
- 1964-12-31 MY MY19644A patent/MY6400004A/xx unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE301751C (en, 2012) * | ||||
| FR958503A (en, 2012) * | 1950-03-13 | |||
| DE860487C (de) * | 1946-11-15 | 1952-12-22 | Basf Ag | Verfahren zur Herstellung von Harnstoff aus Kohlendioxyd und Ammoniak |
| DE812909C (de) * | 1947-06-27 | 1951-09-06 | Basf Ag | Verfahren zur Herstellung von Harnstoff |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1033197B (de) * | 1954-05-17 | 1958-07-03 | Inventa Ag | Verfahren zur Verminderung der Korrosion bei der Harnstoffsynthese |
| DE1244789B (de) * | 1963-05-29 | 1967-07-20 | Allied Chem | Verfahren zum Reinigen von rohem Melamin |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1098397A (fr) | 1955-07-25 |
| CY266A (en) | 1963-10-02 |
| CH329362A (de) | 1958-04-30 |
| US2727069A (en) | 1955-12-13 |
| NL77361C (en, 2012) | |
| GB739876A (en) | 1955-11-02 |
| BE527914A (en, 2012) | |
| MY6400004A (en) | 1964-12-31 |
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