[go: up one dir, main page]

TW235957B - - Google Patents

Info

Publication number
TW235957B
TW235957B TW081110057A TW81110057A TW235957B TW 235957 B TW235957 B TW 235957B TW 081110057 A TW081110057 A TW 081110057A TW 81110057 A TW81110057 A TW 81110057A TW 235957 B TW235957 B TW 235957B
Authority
TW
Taiwan
Prior art keywords
reaction
synthesis
recovery section
pure reagents
recirculating
Prior art date
Application number
TW081110057A
Other languages
English (en)
Original Assignee
Urea Casale Sa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4253531&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=TW235957(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Urea Casale Sa filed Critical Urea Casale Sa
Application granted granted Critical
Publication of TW235957B publication Critical patent/TW235957B/zh

Links

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
    • 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
    • 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)
TW081110057A 1991-11-14 1992-12-12 TW235957B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH332591 1991-11-14

Publications (1)

Publication Number Publication Date
TW235957B true TW235957B (zh) 1994-12-11

Family

ID=4253531

Family Applications (1)

Application Number Title Priority Date Filing Date
TW081110057A TW235957B (zh) 1991-11-14 1992-12-12

Country Status (12)

Country Link
US (1) US5380943A (zh)
EP (1) EP0544056B1 (zh)
KR (1) KR930009987A (zh)
CN (1) CN1034014C (zh)
AT (1) ATE167666T1 (zh)
AU (1) AU2607292A (zh)
BR (1) BR9204358A (zh)
CA (1) CA2082469A1 (zh)
DE (1) DE69226010T2 (zh)
MX (1) MX9206557A (zh)
RU (1) RU2090554C1 (zh)
TW (1) TW235957B (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE134994T1 (de) * 1990-10-05 1996-03-15 Urea Casale Sa Verfahren zur herstellung von harnstoff mit unterschiedlichen leistungen sowie die implementierung in existierenden anlagen
DE69326881D1 (de) * 1993-01-07 1999-12-02 Urea Casale Sa Verbessertes Verfahren zur Produktion von Harnstoff unter Verwendung eines Schrittes zur Kohlendioxidentfernung
US5523482A (en) * 1993-05-14 1996-06-04 Urea Casale S.A. Process and plant for the production of urea in reaction spaces with different yields
TR199501627A2 (tr) * 1994-12-23 1996-07-21 Urea Casale Sa Tepkime alanlari farkli verimlere sahip olmak üzere, üre üretimi icin yöntem ve donanim.
IT1275451B (it) * 1995-06-30 1997-08-07 Snam Progetti Procedimento per la sintesi dell'urea comprendente due separate zone di reazione
DE69708627T2 (de) * 1997-09-20 2002-08-08 Urea Casale S.A., Lugano Verfahren zur kombinierten Erzeugung von Ammoniak und Harnstoff
US6706093B2 (en) 2000-05-23 2004-03-16 Rohm And Haas Company Method and apparatus for preventing iron contamination in corrosive service
CN104387296B (zh) * 2014-10-28 2016-09-28 河南骏化发展股份有限公司 一种尿素生产工艺
EP3323805A1 (en) * 2016-11-18 2018-05-23 Casale SA A process for integrated production of urea and urea-ammonium nitrate
UA126296C2 (uk) 2017-11-16 2022-09-14 Касале Са Спосіб і система вимірювання рівня рідини в посудині установки синтезу сечовини, яка працює під тиском
EP3766865A1 (en) 2019-07-18 2021-01-20 Casale Sa A process for the synthesis of urea

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124547A (en) * 1966-05-02 1968-08-21 Toyo Koatsu Ind Inc Production of urea
JPS5867661A (ja) * 1981-10-16 1983-04-22 Mitsui Toatsu Chem Inc 尿素合成法
IT1211125B (it) * 1981-10-16 1989-09-29 Ortu Francesco Composti azotati. processo per la preparazione di
NL8502227A (nl) * 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
EP0497215A1 (en) * 1991-01-29 1992-08-05 Urea Casale S.A. Process and plant for the production of urea with differentiated yield reaction spaces

Also Published As

Publication number Publication date
DE69226010D1 (de) 1998-07-30
RU2090554C1 (ru) 1997-09-20
MX9206557A (es) 1993-05-01
EP0544056B1 (en) 1998-06-24
EP0544056A1 (en) 1993-06-02
AU2607292A (en) 1993-05-20
KR930009987A (ko) 1993-06-21
BR9204358A (pt) 1993-06-01
CN1072174A (zh) 1993-05-19
ATE167666T1 (de) 1998-07-15
CN1034014C (zh) 1997-02-12
US5380943A (en) 1995-01-10
CA2082469A1 (en) 1993-05-15
DE69226010T2 (de) 1999-02-25

Similar Documents

Publication Publication Date Title
TW235957B (zh)
US5514796A (en) Melamine of improved purity produced by high-pressure, non-catalytic process
CA2447474A1 (en) Processes and apparatus for quantitatively converting urea to ammonia on demand
AU624759B2 (en) Heat exchange reforming process and reactor system
CA2103973A1 (en) Ethylene Recovery in Direct-Oxidation Ethylene Oxide Processes
BR9304228A (pt) Processo para produçao de niyrilla nao-saturada
LTIP996A (en) Process for the production of urea by steps and implementation also on existing plants
ITMI910778A1 (it) Procedimento per la produzione di urea ad elevata efficienza energetica
EP0751121A3 (en) Process for the synthesis of urea comprising two separate reaction zones
TW264464B (zh)
AU5993690A (en) Process for the removal of isocyanic acid from a mixture of isocyanic acid and ammonia
EP0448019A3 (zh)
JPS5883666A (ja) 尿素の生産方法
MX9600600A (es) Procedimiento de alto rendimiento para la sintesis de urea.
ZA931705B (en) Process for the production of guanidine derivatives.
ES426480A1 (es) Un procedimiento para preparar urea.
HU904663D0 (en) Process for producing asymmetrically substituted ureas
EP0612708A3 (en) Production of perchlorethylene from carbon tetrachloride in the presence of hydrogen.
EG23065A (en) Method for the production of urea
GB1253724A (en) Process for producing urea
CA1110659A (en) Integrated ammonia-urea process
GR3027780T3 (en) Process for preparing derivatives of (halo)amino compounds by carbonylation.
ES8306104A1 (es) "un procedimiento mejorado para la preparacion de urea".
KR920016412A (ko) 이소프탈릭에시드로부터 이소프탈로니트릴의 제조방법
ES2103679A1 (es) Proceso e instalacion para la obtencion de acido cianurico de elevada pureza.