JPS5575914A - Ammonia and urea production combined process - Google Patents

Ammonia and urea production combined process

Info

Publication number
JPS5575914A
JPS5575914A JP15143778A JP15143778A JPS5575914A JP S5575914 A JPS5575914 A JP S5575914A JP 15143778 A JP15143778 A JP 15143778A JP 15143778 A JP15143778 A JP 15143778A JP S5575914 A JPS5575914 A JP S5575914A
Authority
JP
Japan
Prior art keywords
urea
crude
contg
gas
synthesizing
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.)
Pending
Application number
JP15143778A
Other languages
Japanese (ja)
Inventor
Kozo Osaki
Keizo Konogi
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.)
Toyo Engineering Corp
Original Assignee
Toyo Engineering 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 Toyo Engineering Corp filed Critical Toyo Engineering Corp
Priority to JP15143778A priority Critical patent/JPS5575914A/en
Priority to IN850/DEL/79A priority patent/IN153372B/en
Priority to GB7941931A priority patent/GB2039893B/en
Priority to BR7907942A priority patent/BR7907942A/en
Priority to NL7908808A priority patent/NL7908808A/en
Priority to FR7929987A priority patent/FR2443456A1/en
Priority to IT27936/79A priority patent/IT1194597B/en
Publication of JPS5575914A publication Critical patent/JPS5575914A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
    • C01B3/025—Preparation or purification of gas mixtures for ammonia synthesis
    • 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
    • C07C273/10—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 combined with the synthesis of 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
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To reduce the total energy required by utilizing the potential waste heat of a crude synthesis gas in a urea producing process when NH3 is synthesized from carbon-contg. raw material and urea is synthesized using CO2 from the crude synthesis gas and NH3.
CONSTITUTION: In a combined process for producing a crude synthesis gas contg. H2, CO, CO2, etc. by steam reforming or partial oxidation of carbon-contg. raw material; synthesizing NH3 from H2 obtd. by purification of the crude gas and N2; and synthesizing urea from CO2 removed in the purification and NH3, the CO2 is removed by physical absorption, and the crude gas is subjected to indirect heat exchange through no heat medium between a CO converting process and the CO2 removing process. The waste heat generated is utilized as a heat source in the urea synthesizing process. When this urea process is out of operation or in an unstationary state, the crude gas is fed to other waste recovering or cooling process. Thus, ammonia and urea are produced combinedly.
COPYRIGHT: (C)1980,JPO&Japio
JP15143778A 1978-12-06 1978-12-06 Ammonia and urea production combined process Pending JPS5575914A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP15143778A JPS5575914A (en) 1978-12-06 1978-12-06 Ammonia and urea production combined process
IN850/DEL/79A IN153372B (en) 1978-12-06 1979-11-27
GB7941931A GB2039893B (en) 1978-12-06 1979-12-05 Thermally integrated ammonia/urea process
BR7907942A BR7907942A (en) 1978-12-06 1979-12-05 THERMAL INTEGRATED PROCESS FOR THE PRODUCTION OF AMMONIA / UREA AND APPLIANCE TO PERFORM
NL7908808A NL7908808A (en) 1978-12-06 1979-12-06 THERMALLY INTEGRATED METHOD AND APPARATUS FOR PREPARING AMMONMIAK AND UREA.
FR7929987A FR2443456A1 (en) 1978-12-06 1979-12-06 THERMALLY INTEGRATED PROCESS FOR THE PRODUCTION OF AMMONIA AND DURA
IT27936/79A IT1194597B (en) 1978-12-06 1979-12-07 THERMALLY INTEGRATED PROCEDURE FOR THE PRODUCTION OF AMMONIA AND UREA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15143778A JPS5575914A (en) 1978-12-06 1978-12-06 Ammonia and urea production combined process

Publications (1)

Publication Number Publication Date
JPS5575914A true JPS5575914A (en) 1980-06-07

Family

ID=15518582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15143778A Pending JPS5575914A (en) 1978-12-06 1978-12-06 Ammonia and urea production combined process

Country Status (7)

Country Link
JP (1) JPS5575914A (en)
BR (1) BR7907942A (en)
FR (1) FR2443456A1 (en)
GB (1) GB2039893B (en)
IN (1) IN153372B (en)
IT (1) IT1194597B (en)
NL (1) NL7908808A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3896031A1 (en) 2020-04-17 2021-10-20 Casale Sa Revamping of ammonia-urea plants

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1494555A (en) * 1965-09-27 1967-09-08 Toyo Koatsu Ind Inc New urea synthesis process

Also Published As

Publication number Publication date
NL7908808A (en) 1980-06-10
IT1194597B (en) 1988-09-22
FR2443456A1 (en) 1980-07-04
IT7927936A0 (en) 1979-12-07
GB2039893B (en) 1983-03-02
FR2443456B1 (en) 1982-07-02
IN153372B (en) 1984-07-14
BR7907942A (en) 1980-07-08
GB2039893A (en) 1980-08-20

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