GB1327321A - Process for urea synthesis - Google Patents

Process for urea synthesis

Info

Publication number
GB1327321A
GB1327321A GB1327321DA GB1327321A GB 1327321 A GB1327321 A GB 1327321A GB 1327321D A GB1327321D A GB 1327321DA GB 1327321 A GB1327321 A GB 1327321A
Authority
GB
United Kingdom
Prior art keywords
carbon dioxide
urea
ammonia
gas
ammonium carbamate
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
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.)
Chemical Construction Corp
Original Assignee
Chemical Construction Corp
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
Application filed by Chemical Construction Corp filed Critical Chemical Construction Corp
Publication of GB1327321A publication Critical patent/GB1327321A/en
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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1327321 Urea CHEMICAL CONSTRUCTION CORP 25 May 1971 16941/71 Heading C2C Urea is synthesized from carbon dioxide and ammonia in a process in which (1) carbon dioxide and ammonia are reacted at 100 to 350 km./sq. cm., (2) the product is heated at less than 100 kg./sq. cm. to separate an off gas from liquid urea effluent, (3) an aqueous ammonium carbamate solution is recovered from the off gas and pressurized to 30 to 350 kg./sq. cm., (4) the solution is stripped in an externally heated zone by carbon dioxide to decompose ammonium carbamate and remove carbon dioxide and ammonia, (5) the resulting gas is heat exchanged with a fluid to condense at least partially, ammonium carbamate, and (6) the resulting stream, with condensate is recycled to urea synthesis.
GB1327321D 1971-05-25 1971-05-25 Process for urea synthesis Expired GB1327321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1694171 1971-05-25

Publications (1)

Publication Number Publication Date
GB1327321A true GB1327321A (en) 1973-08-22

Family

ID=10086425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1327321D Expired GB1327321A (en) 1971-05-25 1971-05-25 Process for urea synthesis

Country Status (1)

Country Link
GB (1) GB1327321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899813A (en) * 1984-04-20 1990-02-13 Snamprogetti S.P.A. Process and apparatus for the synthesis of urea and material used in it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899813A (en) * 1984-04-20 1990-02-13 Snamprogetti S.P.A. Process and apparatus for the synthesis of urea and material used in it

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees