SU1731045A3 - Способ получени мочевины - Google Patents
Способ получени мочевины Download PDFInfo
- Publication number
- SU1731045A3 SU1731045A3 SU853885101A SU3885101A SU1731045A3 SU 1731045 A3 SU1731045 A3 SU 1731045A3 SU 853885101 A SU853885101 A SU 853885101A SU 3885101 A SU3885101 A SU 3885101A SU 1731045 A3 SU1731045 A3 SU 1731045A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- zirconium
- stainless steel
- urea
- decomposition
- pipes
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 43
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000004202 carbamide Substances 0.000 claims abstract description 24
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 18
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 22
- 239000010935 stainless steel Substances 0.000 claims description 21
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims description 16
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 16
- 238000000354 decomposition reaction Methods 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 claims description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 238000003795 desorption Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 235000013877 carbamide Nutrition 0.000 description 19
- 238000012360 testing method Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- -1 8750 kg / h Chemical compound 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003466 welding Methods 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
-
- 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
- B01J2219/02—Apparatus characterised by their chemically-resistant properties
- B01J2219/0204—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
- B01J2219/0236—Metal based
-
- 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
- B01J2219/02—Apparatus characterised by their chemically-resistant properties
- B01J2219/025—Apparatus characterised by their chemically-resistant properties characterised by the construction materials of the reactor vessel proper
- B01J2219/0277—Metal based
- B01J2219/0286—Steel
-
- 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)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8420635A IT1209532B (it) | 1984-04-20 | 1984-04-20 | Processo per la sintesi di urea e materiale utilizzato nello stesso. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1731045A3 true SU1731045A3 (ru) | 1992-04-30 |
Family
ID=11169848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU853885101A SU1731045A3 (ru) | 1984-04-20 | 1985-04-19 | Способ получени мочевины |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US4899813A (enExample) |
| JP (1) | JPS60233047A (enExample) |
| AR (1) | AR240914A1 (enExample) |
| AU (1) | AU572284B2 (enExample) |
| BE (1) | BE902246A (enExample) |
| CA (1) | CA1331993C (enExample) |
| DE (1) | DE3514250A1 (enExample) |
| DK (1) | DK175985D0 (enExample) |
| ES (1) | ES8603288A1 (enExample) |
| FR (1) | FR2563217A1 (enExample) |
| GB (1) | GB2157687B (enExample) |
| GR (1) | GR850954B (enExample) |
| IN (1) | IN164410B (enExample) |
| IT (1) | IT1209532B (enExample) |
| LU (1) | LU85857A1 (enExample) |
| MX (1) | MX160685A (enExample) |
| NL (1) | NL8501151A (enExample) |
| NO (1) | NO163559C (enExample) |
| PT (1) | PT80322B (enExample) |
| SE (1) | SE8501859L (enExample) |
| SU (1) | SU1731045A3 (enExample) |
| ZA (1) | ZA852725B (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2350876C2 (ru) * | 2004-03-16 | 2009-03-27 | Уреа Касале С.А. | Аппарат для обработки обладающих высокой коррозионной активностью веществ |
| RU2721699C2 (ru) * | 2015-12-11 | 2020-05-21 | Касале Са | Способ производства мочевины с высокотемпературным стриппингом |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2072966C1 (ru) * | 1990-03-12 | 1997-02-10 | Уриа Казале С.А. | Способ конденсации паров аммиака углекислого газа и воды, образующихся при обработке раствора, поступающего из реактора получения мочевины и устройство для его осуществления |
| DE9405062U1 (de) * | 1994-03-24 | 1994-05-26 | Hoval Interliz Ag, Vaduz-Neugut | Wärmetauscherrohr für Heizkessel |
| DE29515406U1 (de) * | 1995-09-20 | 1997-01-30 | Ruhr Oel GmbH, 45896 Gelsenkirchen | Rohrbündel-Wärmeübertrager |
| AT403735B (de) * | 1996-03-11 | 1998-05-25 | Vaillant Gmbh | Lamellenwärmetauscher |
| US6318094B1 (en) | 2000-08-11 | 2001-11-20 | Paul Mueller Company | Bimetallic tube in a heat exchanger of an ice making machine |
| ITMI20021009A1 (it) * | 2002-05-13 | 2003-11-13 | Snam Progetti | Apparecchiatura a fascio tubiero per processare fluidi corrosivi |
| US7922065B2 (en) * | 2004-08-02 | 2011-04-12 | Ati Properties, Inc. | Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts |
| ITMI20061223A1 (it) | 2006-06-26 | 2007-12-27 | Snam Progetti | Tubo bimetallico resistente alla corrosione e suo utilizzo in apparecchiature a fascio tubiwero |
| IT1391426B1 (it) | 2008-07-17 | 2011-12-23 | Snam Progetti | Apparecchiatura a fascio tubiero per processare fluidi corrosivi |
| EP2286909A1 (en) * | 2009-08-17 | 2011-02-23 | Stamicarbon B.V. | An apparatus for the decomposition of non-converted ammonium carbamate in urea solutions in a urea synthesis process |
| US10118259B1 (en) | 2012-12-11 | 2018-11-06 | Ati Properties Llc | Corrosion resistant bimetallic tube manufactured by a two-step process |
| EP2801396A1 (en) * | 2013-05-10 | 2014-11-12 | Casale Sa | Use of duplex stainless steel in an ammonia-stripping of urea plants |
| RU2675952C2 (ru) * | 2014-01-10 | 2018-12-25 | Эуротекника Меламине, Люксембург, Цвайгнидерлассунг ин Иттиген | Трубчатый теплообменник и установка, в частности реактор для производства меламина, содержащая такой теплообменник |
| WO2017003711A1 (en) * | 2015-06-30 | 2017-01-05 | Uop Llc | Heat exchangers for low temperature carbon dioxide separation from natural gas |
| US10994319B2 (en) * | 2016-07-01 | 2021-05-04 | Sandvik Intellectual Property Ab | Bimetallic tube and method for manufacturing a bimetallic tube |
| GEAP202115347A (en) | 2017-10-27 | 2021-09-10 | Stamicarbon | High pressure carbamate condenser |
| PL3502293T3 (pl) | 2017-12-22 | 2020-11-02 | Saipem S.P.A. | Zastosowania dupleksowych stali nierdzewnych |
| EP3513871A1 (en) * | 2018-01-17 | 2019-07-24 | Yara International ASA | Carbamate decomposer comprising flow distributor |
| AU2020311257B2 (en) * | 2019-07-05 | 2023-03-02 | Stamicarbon B.V. | Ferritic steel parts in urea plants |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3041152A (en) * | 1957-02-21 | 1962-06-26 | Chemical Construction Corp | Apparatus for high temperature and pressure chemical reactions |
| NL293154A (enExample) * | 1963-02-01 | 1900-01-01 | ||
| FR1356620A (fr) * | 1963-02-01 | 1964-03-27 | Chemical Processes Of Ohio | Procédé de synthèse de l'urée à partir d'ammoniac et de gaz carbonique et installation pour sa mise en oeuvre |
| US3515520A (en) * | 1967-02-13 | 1970-06-02 | Universal Oil Prod Co | Reactor with internal protective sleeve for corrosive systems |
| AT290545B (de) * | 1967-09-29 | 1971-06-11 | Snam Progetti | Verfahren zur Herstellung von Harnstoff mit niedrigem Carbamatgehalt |
| GB1292515A (en) * | 1969-04-04 | 1972-10-11 | Snam Progetti | Process for producing urea |
| EG10651A (en) * | 1970-04-02 | 1977-10-31 | Snam Progetti | Process for prevention reactors corrosion during production of urea |
| GB1327321A (en) * | 1971-05-25 | 1973-08-22 | Chemical Construction Corp | Process for urea synthesis |
| DE2153437B2 (de) * | 1971-10-27 | 1974-11-21 | Metallgesellschaft Ag, 6000 Frankfurt | Reaktor zur Herstellung von Methanol |
| US4210600A (en) * | 1976-10-28 | 1980-07-01 | Snamprogetti, S.P.A. | Method for the preparation of urea with a high-yield reactor |
| US4291104A (en) * | 1978-04-17 | 1981-09-22 | Fansteel Inc. | Brazed corrosion resistant lined equipment |
| IT1141030B (it) * | 1980-08-29 | 1986-10-01 | Snam Progetti | Procedimento per la produzione di urea |
-
1984
- 1984-04-20 IT IT8420635A patent/IT1209532B/it active
-
1985
- 1985-04-11 ZA ZA852725A patent/ZA852725B/xx unknown
- 1985-04-15 AU AU41241/85A patent/AU572284B2/en not_active Ceased
- 1985-04-16 SE SE8501859A patent/SE8501859L/ not_active Application Discontinuation
- 1985-04-16 MX MX204980A patent/MX160685A/es unknown
- 1985-04-17 IN IN293/MAS/85A patent/IN164410B/en unknown
- 1985-04-18 DK DK175985A patent/DK175985D0/da unknown
- 1985-04-19 AR AR300153A patent/AR240914A1/es active
- 1985-04-19 SU SU853885101A patent/SU1731045A3/ru active
- 1985-04-19 CA CA000479600A patent/CA1331993C/en not_active Expired - Lifetime
- 1985-04-19 ES ES543108A patent/ES8603288A1/es not_active Expired
- 1985-04-19 GR GR850954A patent/GR850954B/el unknown
- 1985-04-19 JP JP60082702A patent/JPS60233047A/ja active Pending
- 1985-04-19 PT PT80322A patent/PT80322B/pt unknown
- 1985-04-19 DE DE19853514250 patent/DE3514250A1/de active Granted
- 1985-04-19 LU LU85857A patent/LU85857A1/fr unknown
- 1985-04-19 FR FR8505988A patent/FR2563217A1/fr active Pending
- 1985-04-19 NO NO851574A patent/NO163559C/no unknown
- 1985-04-19 GB GB08510103A patent/GB2157687B/en not_active Expired
- 1985-04-19 BE BE0/214885A patent/BE902246A/fr not_active IP Right Cessation
- 1985-04-19 NL NL8501151A patent/NL8501151A/nl not_active Application Discontinuation
-
1988
- 1988-03-22 US US07/173,032 patent/US4899813A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| Синева К.Н. Производство карбамида, М.: Хими , 1970, с. 69-65, 186. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2350876C2 (ru) * | 2004-03-16 | 2009-03-27 | Уреа Касале С.А. | Аппарат для обработки обладающих высокой коррозионной активностью веществ |
| RU2721699C2 (ru) * | 2015-12-11 | 2020-05-21 | Касале Са | Способ производства мочевины с высокотемпературным стриппингом |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3514250A1 (de) | 1985-11-07 |
| IT1209532B (it) | 1989-08-30 |
| ES543108A0 (es) | 1985-12-16 |
| ZA852725B (en) | 1985-11-27 |
| SE8501859L (sv) | 1985-10-21 |
| NO851574L (no) | 1985-10-21 |
| US4899813A (en) | 1990-02-13 |
| GB2157687A (en) | 1985-10-30 |
| IN164410B (enExample) | 1989-03-11 |
| GB2157687B (en) | 1987-10-07 |
| NO163559C (no) | 1990-06-20 |
| AR240914A2 (es) | 1991-03-27 |
| AU4124185A (en) | 1985-10-24 |
| CA1331993C (en) | 1994-09-13 |
| JPS60233047A (ja) | 1985-11-19 |
| DE3514250C2 (enExample) | 1988-12-22 |
| PT80322A (en) | 1985-05-01 |
| PT80322B (en) | 1987-02-16 |
| AU572284B2 (en) | 1988-05-05 |
| FR2563217A1 (fr) | 1985-10-25 |
| SE8501859D0 (sv) | 1985-04-16 |
| ES8603288A1 (es) | 1985-12-16 |
| DK175985D0 (da) | 1985-04-18 |
| NO163559B (no) | 1990-03-12 |
| IT8420635A0 (it) | 1984-04-20 |
| LU85857A1 (fr) | 1985-12-16 |
| NL8501151A (nl) | 1985-11-18 |
| AR240914A1 (es) | 1991-03-27 |
| GB8510103D0 (en) | 1985-05-30 |
| GR850954B (enExample) | 1985-11-25 |
| BE902246A (fr) | 1985-10-21 |
| MX160685A (es) | 1990-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU1731045A3 (ru) | Способ получени мочевины | |
| US12325679B2 (en) | Ferritic steel parts in urea plants | |
| DE69708627T2 (de) | Verfahren zur kombinierten Erzeugung von Ammoniak und Harnstoff | |
| DE3714439A1 (de) | Verfahren zur herstellung von (cyclo)aliphatischen diisocyanaten | |
| ITMI20100810A1 (it) | Procedimento a basso consumo energetico per la produzione di melammina ad elevata purezza tramite pirolisi dell'urea, e relativa apparecchiatura | |
| JP2022508407A (ja) | 尿素製造プロセス及び低圧回収部における熱統合を有するプラント | |
| BG35038A3 (en) | Method and installation for synthesis of urea | |
| US3114415A (en) | Shell and tube heat exchangers | |
| DE2220617A1 (de) | Verfahren zur herstellung von wasserstoff | |
| CA1211689A (en) | Method for avoiding the corrosion of the strippers in the urea manufacturing plants | |
| US20240208897A1 (en) | Improvements to equipment of urea plants | |
| CA1182838A (en) | Urea production method | |
| EP1527013A1 (de) | Verfahren zur abtrennung von schwefelwasserstoff aus koksofengas mit nachfolgender gewinnung von elementarem schwefel in einer claus-anlage | |
| US4082797A (en) | Method for the condensation of carbammate in urea-synthesis installations | |
| AU2022420708A1 (en) | Thermal stripping urea production | |
| CN1840523B (zh) | 尿素制备方法及相关设备 | |
| RU2857195C2 (ru) | Усовершенствование оборудования установки для получения мочевины | |
| DE2211105A1 (de) | Verfahren und anlage zur herstellung von wasserstoff mit natuerlicher deuteriumkonzentration | |
| IE43281B1 (en) | Formation of ammonium carbamate solution | |
| DD251876A3 (de) | Verfahren zur gleichzeitigen abscheidung mehrerer produkte aus gasstroemen | |
| GB845501A (en) | Method of isotope concentration | |
| EP0072416A2 (de) | Verfahren zur Herstellung von Cyanwasserstoff |