DE3375136D1 - Process for the displacement from the liquid to the gaseous phase of the excess of nh3 contained in aqueous solutions of urea - Google Patents

Process for the displacement from the liquid to the gaseous phase of the excess of nh3 contained in aqueous solutions of urea

Info

Publication number
DE3375136D1
DE3375136D1 DE8383105592T DE3375136T DE3375136D1 DE 3375136 D1 DE3375136 D1 DE 3375136D1 DE 8383105592 T DE8383105592 T DE 8383105592T DE 3375136 T DE3375136 T DE 3375136T DE 3375136 D1 DE3375136 D1 DE 3375136D1
Authority
DE
Germany
Prior art keywords
urea
excess
displacement
contained
liquid
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
Application number
DE8383105592T
Other languages
English (en)
Inventor
Giorgio Pagani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGRICOLTURA S.P.A. I.L., PALERMO, IT SNAMPROGETTI
Original Assignee
Montedison SpA
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=11186667&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3375136(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Montedison SpA filed Critical Montedison SpA
Application granted granted Critical
Publication of DE3375136D1 publication Critical patent/DE3375136D1/de
Expired legal-status Critical Current

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
    • 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
    • Y02P20/141—Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
DE8383105592T 1982-06-08 1983-06-07 Process for the displacement from the liquid to the gaseous phase of the excess of nh3 contained in aqueous solutions of urea Expired DE3375136D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8221774A IT1212524B (it) 1982-06-08 1982-06-08 Procedimento perfezionato per il trasferimento, dalla fase liquida alla fase gassosa, dell'ammoniaca in eccesso contenuta in soluzioni acquose di urea.

Publications (1)

Publication Number Publication Date
DE3375136D1 true DE3375136D1 (en) 1988-02-11

Family

ID=11186667

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383105592T Expired DE3375136D1 (en) 1982-06-08 1983-06-07 Process for the displacement from the liquid to the gaseous phase of the excess of nh3 contained in aqueous solutions of urea

Country Status (9)

Country Link
EP (1) EP0098396B1 (de)
AR (1) AR230985A1 (de)
BR (1) BR8302973A (de)
CA (1) CA1216594A (de)
DE (1) DE3375136D1 (de)
ES (1) ES523055A0 (de)
IN (1) IN159132B (de)
IT (1) IT1212524B (de)
PT (1) PT76822B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1163783B (it) * 1983-07-14 1987-04-08 Montedison Spa Processo per la produzione di urea con bassi consumi di vapore
DE3565532D1 (en) * 1984-05-19 1988-11-17 Ammonia Casale Sa Process for the preparation of urea
IT1245396B (it) * 1991-03-22 1994-09-20 Snam Progetti Procedimento per la produzione di urea ad elevata efficienza energetica

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013718A (en) * 1970-09-03 1977-03-22 Snam Progetti S.P.A. Integrated process for the production of urea
NO150512C (no) * 1977-05-05 1984-10-31 Montedison Spa Fremgangsmaate ved fremstilling av urea.
GB2089786B (en) * 1980-12-23 1985-02-20 Mitsui Toatsu Chemicals Process for synthesizing urea

Also Published As

Publication number Publication date
ES8407468A1 (es) 1984-10-01
BR8302973A (pt) 1984-02-07
IT8221774A0 (it) 1982-06-08
EP0098396A2 (de) 1984-01-18
CA1216594A (en) 1987-01-13
PT76822A (en) 1983-07-01
PT76822B (en) 1986-02-27
EP0098396A3 (en) 1984-10-03
AR230985A1 (es) 1984-08-31
EP0098396B1 (de) 1988-01-07
IT1212524B (it) 1989-11-30
IN159132B (de) 1987-03-28
ES523055A0 (es) 1984-10-01

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: AGRICOLTURA S.P.A. I.L., PALERMO, IT SNAMPROGETTI

8328 Change in the person/name/address of the agent

Free format text: BARZ, P., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 80803 MUENCHEN

8339 Ceased/non-payment of the annual fee