RU2015152849A - Применение нержавеющей стали, выплавленной дуплекс-процессом, при отпарке аммиаком на установках для синтеза мочевины - Google Patents
Применение нержавеющей стали, выплавленной дуплекс-процессом, при отпарке аммиаком на установках для синтеза мочевины Download PDFInfo
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- RU2015152849A RU2015152849A RU2015152849A RU2015152849A RU2015152849A RU 2015152849 A RU2015152849 A RU 2015152849A RU 2015152849 A RU2015152849 A RU 2015152849A RU 2015152849 A RU2015152849 A RU 2015152849A RU 2015152849 A RU2015152849 A RU 2015152849A
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- Prior art keywords
- stripping
- stripping device
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- ammonia
- stainless steel
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- 238000000034 method Methods 0.000 title claims 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims 14
- 230000015572 biosynthetic process Effects 0.000 title claims 11
- 238000003786 synthesis reaction Methods 0.000 title claims 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims 8
- 239000004202 carbamide Substances 0.000 title claims 8
- 229910021529 ammonia Inorganic materials 0.000 title claims 7
- 229910001220 stainless steel Inorganic materials 0.000 title claims 7
- 239000010935 stainless steel Substances 0.000 title claims 7
- 238000010025 steaming Methods 0.000 title claims 2
- 238000009434 installation Methods 0.000 claims 5
- 229910000831 Steel Inorganic materials 0.000 claims 4
- 239000010959 steel Substances 0.000 claims 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 3
- 239000001301 oxygen Substances 0.000 claims 3
- 229910052760 oxygen Inorganic materials 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000011552 falling film Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
- B01D1/065—Evaporators with vertical tubes by film evaporating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/343—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances the substance being a gas
-
- 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
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1812—Tubular reactors
- B01J19/1825—Tubular reactors in parallel
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- 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
-
- 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
- B01J19/245—Stationary reactors without moving elements inside placed in series
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- 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
- B01J19/247—Suited for forming thin films
-
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
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- 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
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- 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
- B01J2219/24—Stationary reactors without moving elements inside
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0022—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for chemical reactors
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (15)
1. Кожухотрубное отпарное устройство для использования на установке для синтеза мочевины способом с отпаркой аммиаком или способом с самоотпаркой, включающее кожух и пучок труб с возможностью обеспечить отпарку раствора карбамата, подаваемого в указанные трубы путем нагрева, и необязательно с использованием аммиака в качестве средства для отпарки, отличающееся тем, что трубы изготовлены из нержавеющей стали, выплавленной дуплекс-процессом по одному из нижеуказанных вариантов:
А) сталь Safurex®, а именно 29Cr-6,5Ni-2Mo-N, которую по системе кодирования Американского общества инженеров-механиков (ASME) обозначают также 2295-3 и по Единой системе нумерации (UNS) - S32906,
или
Б) сталь DP28W™, а именно 27Cr-7,6Ni-1Mo-2,3W-N, которую по системе кодирования ASME обозначают также 2496-1 и по UNS - S32808.
2. Отпарное устройство по п. 1 для работы при температуре около 205°C и давлении 140-160 бар.
3. Отпарное устройство по одному из предшествующих пунктов, представляющее собой отпарное устройство с падающей пленкой.
4. Установка для синтеза мочевины способом с отпаркой аммиаком или термической отпаркой, включающая контур высокого давления для синтеза, который включает реактор для синтеза, кожухотрубное отпарное устройство и конденсатор, отличающаяся тем, что указанное отпарное устройство выполнено по одному из пп. 1-3.
5. Установка по п. 4, включающая в нижней части отпарного устройства питательную линию с возможностью подачи потока, содержащего кислород.
6. Установка по п. 5, в которой указанная линия для подачи потока, содержащего кислород, является линией, предназначенной для подачи воздуха, направленной в нижнюю часть отпарного устройства.
7. Установка по п. 6, в которой в контуре указанная линия для подачи потока, содержащего кислород, является линией для выходящего из реактора потока, отбираемого из сепаратора для отделения газа от жидкости в верхней части указанного реактора для синтеза.
8. Применение нержавеющей стали, выплавленной дуплекс-процессом, по варианту А) или варианту Б) п. 1, для изготовления пучка труб для отпарного устройства установки для синтеза мочевины способом с отпаркой аммиаком или установки для синтеза мочевины способом с термической отпаркой.
9. Способ модернизации установки для синтеза мочевины способом с отпаркой аммиаком или термической отпаркой, отличающийся тем, что для изготовления труб кожухотрубного отпарного устройства указанной установки используют нержавеющую сталь, выплавленную дуплекс-процессом, причем указанная сталь соответствует варианту А) или варианту Б) п. 1.
10. Способ по п. 9, отличающийся тем, что первоначальные трубы действующего отпарного устройства заменяют новыми трубами, изготовленными из нержавеющей стали, выплавленной дуплекс-процессом.
11. Способ модернизации установки для синтеза мочевины с полной рециркуляцией без отпарки, отличающийся тем, что устанавливают кожухотрубное отпарное устройство высокого давления, причем указанное отпарное устройство имеет трубы, изготовленные из нержавеющей стали, выплавленной дуплекс-процессом, и указанная сталь соответствует варианту А) или варианту Б) п. 1.
12. Способ синтеза мочевины по процессу с самоотпаркой или отпаркой аммиаком, включающий стадию отпарки выходящего из реактора потока в кожухотрубном отпарном устройстве, причем трубы указанного отпарного устройства изготовлены из нержавеющей стали, выплавленной дуплекс-процессом по варианту А) или варианту Б) п. 1.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20130167242 EP2801396A1 (en) | 2013-05-10 | 2013-05-10 | Use of duplex stainless steel in an ammonia-stripping of urea plants |
EP13167242.0 | 2013-05-10 | ||
PCT/EP2014/059053 WO2014180761A1 (en) | 2013-05-10 | 2014-05-05 | Use of duplex stainless steel in an ammonia-stripping of urea plants |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2015152849A true RU2015152849A (ru) | 2017-06-16 |
RU2654018C2 RU2654018C2 (ru) | 2018-05-15 |
Family
ID=48366210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2015152849A RU2654018C2 (ru) | 2013-05-10 | 2014-05-05 | Применение нержавеющей стали, выплавленной дуплекс-процессом, при отпарке аммиаком на установках для синтеза мочевины |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160082408A1 (ru) |
EP (2) | EP2801396A1 (ru) |
CN (1) | CN105377394A (ru) |
CA (1) | CA2910373C (ru) |
RU (1) | RU2654018C2 (ru) |
WO (1) | WO2014180761A1 (ru) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA036426B1 (ru) | 2015-07-20 | 2020-11-10 | Стамикарбон Б.В. | Дуплексная нержавеющая сталь и ее применение |
CA2991658C (en) | 2015-07-20 | 2023-12-19 | Sandvik Intellectual Property Ab | Duplex stainless steel and formed object thereof |
AU2018366077B2 (en) | 2017-11-10 | 2021-07-08 | Stamicarbon B.V. | Urea production process and plant |
LT3502293T (lt) | 2017-12-22 | 2020-07-10 | Saipem S.P.A. | Dupleksinio nerūdijančio plieno panaudojimas |
CN117187700A (zh) | 2019-07-05 | 2023-12-08 | 斯塔米卡邦有限公司 | 尿素装置中的铁素体钢部件 |
Family Cites Families (14)
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US4005997A (en) * | 1975-02-24 | 1977-02-01 | The Dow Chemical Company | Gas dehydration with liquid desiccants and regeneration thereof |
IT1209532B (it) * | 1984-04-20 | 1989-08-30 | Snam Progetti | Processo per la sintesi di urea e materiale utilizzato nello stesso. |
SE501321C2 (sv) * | 1993-06-21 | 1995-01-16 | Sandvik Ab | Ferrit-austenitiskt rostfritt stål samt användning av stålet |
US6603095B2 (en) * | 2001-07-23 | 2003-08-05 | Siemens Automotive Corporation | Apparatus and method of overlapping formation of chamfers and orifices by laser light |
AR038192A1 (es) * | 2002-02-05 | 2005-01-05 | Toyo Engineering Corp | Acero inoxidable duplex para plantas de produccion de urea, planta de produccion de urea y material de soldadura fabricado con dicho acero inoxidable duplex. |
NL1020388C2 (nl) * | 2002-04-15 | 2003-10-17 | Dsm Nv | Werkwijze voor de bereiding van ureum. |
EP1577632A1 (en) | 2004-03-16 | 2005-09-21 | Urea Casale S.A. | Apparatus for treating highly corrosive agents |
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 |
EP2107051A1 (en) * | 2008-04-02 | 2009-10-07 | DSM IP Assets B.V. | Process for inreasing the capacity of an existing urea plant |
EP2359921A1 (en) * | 2010-02-12 | 2011-08-24 | Urea Casale SA | Falling-film stripper and stripping medium distributor for carbamate decomposition |
CN101780341A (zh) * | 2010-03-05 | 2010-07-21 | 张培洲 | 一种管式降膜蒸发器 |
EP2505581A1 (en) * | 2011-03-31 | 2012-10-03 | Stamicarbon B.V. | Zero emission urea process and plant |
ITMI20110804A1 (it) * | 2011-05-10 | 2012-11-11 | Saipem Spa | "processo ad alta resa per la sintesi dell'urea" |
ITMI20120013A1 (it) * | 2012-01-09 | 2013-07-10 | Saipem Spa | Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper |
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2013
- 2013-05-10 EP EP20130167242 patent/EP2801396A1/en not_active Withdrawn
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2014
- 2014-05-05 WO PCT/EP2014/059053 patent/WO2014180761A1/en active Application Filing
- 2014-05-05 US US14/890,104 patent/US20160082408A1/en not_active Abandoned
- 2014-05-05 CN CN201480026332.5A patent/CN105377394A/zh active Pending
- 2014-05-05 EP EP14720981.1A patent/EP2994208A1/en not_active Withdrawn
- 2014-05-05 CA CA2910373A patent/CA2910373C/en active Active
- 2014-05-05 RU RU2015152849A patent/RU2654018C2/ru active
Also Published As
Publication number | Publication date |
---|---|
CA2910373C (en) | 2021-02-16 |
CN105377394A (zh) | 2016-03-02 |
US20160082408A1 (en) | 2016-03-24 |
EP2994208A1 (en) | 2016-03-16 |
RU2654018C2 (ru) | 2018-05-15 |
WO2014180761A1 (en) | 2014-11-13 |
CA2910373A1 (en) | 2014-11-13 |
EP2801396A1 (en) | 2014-11-12 |
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