CA2687668C - Enhanced process for the synthesis of urea - Google Patents
Enhanced process for the synthesis of urea Download PDFInfo
- Publication number
- CA2687668C CA2687668C CA2687668A CA2687668A CA2687668C CA 2687668 C CA2687668 C CA 2687668C CA 2687668 A CA2687668 A CA 2687668A CA 2687668 A CA2687668 A CA 2687668A CA 2687668 C CA2687668 C CA 2687668C
- Authority
- CA
- Canada
- Prior art keywords
- stream
- stripper
- reactor
- process according
- fed
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 74
- 230000008569 process Effects 0.000 title claims abstract description 71
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000004202 carbamide Substances 0.000 title claims abstract description 66
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 55
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 44
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 336
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 168
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 163
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 67
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims abstract description 42
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 27
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 17
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 15
- 238000000746 purification Methods 0.000 claims description 11
- 238000000354 decomposition reaction Methods 0.000 claims description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 2
- 229960000510 ammonia Drugs 0.000 description 61
- 235000013877 carbamide Nutrition 0.000 description 61
- 239000007788 liquid Substances 0.000 description 26
- 229910001868 water Inorganic materials 0.000 description 24
- 229960004424 carbon dioxide Drugs 0.000 description 23
- 238000006243 chemical reaction Methods 0.000 description 22
- 230000006835 compression Effects 0.000 description 21
- 238000007906 compression Methods 0.000 description 21
- 230000035611 feeding Effects 0.000 description 16
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000009833 condensation Methods 0.000 description 11
- 238000002161 passivation Methods 0.000 description 11
- 230000005494 condensation Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000002051 biphasic effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- -1 wa-ter Chemical compound 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229940045136 urea Drugs 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
-
- 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
- B01J2219/00002—Chemical plants
- B01J2219/00004—Scale aspects
- B01J2219/00006—Large-scale industrial plants
-
- 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
- B01J2219/00002—Chemical plants
- B01J2219/00027—Process aspects
- B01J2219/0004—Processes in series
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT001029A ITMI20071029A1 (it) | 2007-05-22 | 2007-05-22 | Procedimento migliorato per la sintesi di urea |
| ITMI2007A001029 | 2007-05-22 | ||
| PCT/EP2008/004119 WO2008141832A1 (en) | 2007-05-22 | 2008-05-19 | Enhanced process for the synthesis of urea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2687668A1 CA2687668A1 (en) | 2008-11-27 |
| CA2687668C true CA2687668C (en) | 2016-03-22 |
Family
ID=38691998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2687668A Expired - Fee Related CA2687668C (en) | 2007-05-22 | 2008-05-19 | Enhanced process for the synthesis of urea |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US8106241B2 (enExample) |
| EP (1) | EP2152666B1 (enExample) |
| JP (1) | JP5378361B2 (enExample) |
| CN (1) | CN101679224B (enExample) |
| AR (1) | AR066652A1 (enExample) |
| AU (1) | AU2008253238B2 (enExample) |
| CA (1) | CA2687668C (enExample) |
| EG (1) | EG25867A (enExample) |
| IT (1) | ITMI20071029A1 (enExample) |
| MX (1) | MX2009012541A (enExample) |
| PL (1) | PL2152666T3 (enExample) |
| RU (1) | RU2468002C2 (enExample) |
| UA (1) | UA97980C2 (enExample) |
| WO (1) | WO2008141832A1 (enExample) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2128129A1 (en) * | 2008-05-20 | 2009-12-02 | Urea Casale S.A. | Method for the modernization of a urea production plant |
| IT1395383B1 (it) * | 2009-09-09 | 2012-09-14 | Saipem Spa | Metodo di separazione di ammoniaca e diossido di carbonio da soluzioni acquose |
| WO2021220058A1 (en) | 2020-05-01 | 2021-11-04 | Monday.com Ltd. | Digital processing systems and methods for enhanced collaborative workflow and networking systems, methods, and devices |
| ITMI20110804A1 (it) * | 2011-05-10 | 2012-11-11 | Saipem Spa | "processo ad alta resa per la sintesi dell'urea" |
| ITMI20111299A1 (it) * | 2011-07-12 | 2013-01-13 | Saipem Spa | Piatto di reattore per la produzione di urea, e reattore e processo di produzione di 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 |
| CN102635536A (zh) * | 2012-05-03 | 2012-08-15 | 内蒙古乌拉山化肥有限责任公司 | 一种防止五段式co2压缩机中co2液化的方法 |
| NO341768B1 (no) * | 2012-08-29 | 2018-01-15 | Yara Int Asa | Passivert urea og gjødselblandinger |
| ITMI20130268A1 (it) | 2013-02-25 | 2014-08-26 | Saipem Spa | Metodo e sistema per l'abbattimento di ammoniaca da un flusso gassoso di scarico di un impianto urea |
| GB2530447B (en) | 2013-05-28 | 2020-02-26 | Toyo Engineering Corp | Urea synthesis method |
| ITMI20131139A1 (it) * | 2013-07-05 | 2015-01-06 | Saipem Spa | Sistema e metodo di diffusione di gas per immettere un flusso gassoso, in particolare un flusso gassoso passivante, in un apparato di un impianto urea |
| CN103396343A (zh) * | 2013-07-09 | 2013-11-20 | 内蒙古鄂尔多斯联合化工有限公司 | 二氧化碳气提尿素生产工艺系统防腐方法 |
| IT201700090748A1 (it) * | 2017-08-04 | 2019-02-04 | Saipem Spa | Processo e impianto di produzione di urea facenti uso di co2 prodotta tramite ossi-combustione |
| JP2023108791A (ja) * | 2022-01-26 | 2023-08-07 | 東洋エンジニアリング株式会社 | 尿素合成方法 |
Family Cites Families (8)
| 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 |
| EG10651A (en) * | 1970-04-02 | 1977-10-31 | Snam Progetti | Process for prevention reactors corrosion during production of urea |
| JPS5746954A (en) * | 1980-09-05 | 1982-03-17 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| NL8500591A (nl) * | 1985-03-04 | 1986-10-01 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum uit kooldioxide en ammoniak. |
| NL8502227A (nl) | 1985-08-12 | 1987-03-02 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| IT1245396B (it) * | 1991-03-22 | 1994-09-20 | Snam Progetti | Procedimento per la produzione di urea ad elevata efficienza energetica |
| JP4358428B2 (ja) * | 2000-11-01 | 2009-11-04 | 東洋エンジニアリング株式会社 | 尿素製造方法 |
| RU2396253C2 (ru) * | 2005-03-03 | 2010-08-10 | Уреа Казале С.А. | Способ получения мочевины и установка для его осуществления |
-
2007
- 2007-05-22 IT IT001029A patent/ITMI20071029A1/it unknown
-
2008
- 2008-05-19 WO PCT/EP2008/004119 patent/WO2008141832A1/en not_active Ceased
- 2008-05-19 JP JP2010508743A patent/JP5378361B2/ja not_active Expired - Fee Related
- 2008-05-19 US US12/601,103 patent/US8106241B2/en not_active Expired - Fee Related
- 2008-05-19 EP EP08758715A patent/EP2152666B1/en active Active
- 2008-05-19 CN CN2008800194349A patent/CN101679224B/zh not_active Expired - Fee Related
- 2008-05-19 PL PL08758715T patent/PL2152666T3/pl unknown
- 2008-05-19 RU RU2009145646/04A patent/RU2468002C2/ru active
- 2008-05-19 AU AU2008253238A patent/AU2008253238B2/en not_active Ceased
- 2008-05-19 UA UAA200911792A patent/UA97980C2/uk unknown
- 2008-05-19 CA CA2687668A patent/CA2687668C/en not_active Expired - Fee Related
- 2008-05-19 MX MX2009012541A patent/MX2009012541A/es active IP Right Grant
- 2008-05-21 AR ARP080102142A patent/AR066652A1/es active IP Right Grant
-
2009
- 2009-11-22 EG EG2009111710A patent/EG25867A/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| EP2152666B1 (en) | 2013-03-27 |
| US20100217041A1 (en) | 2010-08-26 |
| ITMI20071029A1 (it) | 2008-11-23 |
| AU2008253238A1 (en) | 2008-11-27 |
| WO2008141832A8 (en) | 2009-12-17 |
| AR066652A1 (es) | 2009-09-02 |
| JP2010527949A (ja) | 2010-08-19 |
| RU2009145646A (ru) | 2011-06-27 |
| EP2152666A1 (en) | 2010-02-17 |
| WO2008141832A1 (en) | 2008-11-27 |
| EG25867A (en) | 2012-09-12 |
| MX2009012541A (es) | 2010-02-12 |
| CA2687668A1 (en) | 2008-11-27 |
| PL2152666T3 (pl) | 2013-09-30 |
| CN101679224B (zh) | 2013-11-06 |
| CN101679224A (zh) | 2010-03-24 |
| JP5378361B2 (ja) | 2013-12-25 |
| RU2468002C2 (ru) | 2012-11-27 |
| US8106241B2 (en) | 2012-01-31 |
| AU2008253238B2 (en) | 2013-05-16 |
| UA97980C2 (uk) | 2012-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20130426 |
|
| MKLA | Lapsed |
Effective date: 20200831 |