JPS5785356A - Separating method of inert gas - Google Patents

Separating method of inert gas

Info

Publication number
JPS5785356A
JPS5785356A JP55160112A JP16011280A JPS5785356A JP S5785356 A JPS5785356 A JP S5785356A JP 55160112 A JP55160112 A JP 55160112A JP 16011280 A JP16011280 A JP 16011280A JP S5785356 A JPS5785356 A JP S5785356A
Authority
JP
Japan
Prior art keywords
urea
tube
temperature
fed
inert gas
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
JP55160112A
Other languages
Japanese (ja)
Inventor
Shigeru Inoue
Hiroshi Ono
Hidetsugu Fujii
Haruyuki Morikawa
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.)
Mitsui Toatsu Chemicals Inc
Toyo Engineering Corp
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc, Toyo Engineering Corp filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP55160112A priority Critical patent/JPS5785356A/en
Priority to IN1221/CAL/81A priority patent/IN153675B/en
Priority to BR8107389A priority patent/BR8107389A/en
Priority to KR1019810004392A priority patent/KR870000771B1/en
Publication of JPS5785356A publication Critical patent/JPS5785356A/en
Pending 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
    • C07C273/14—Separation; Purification; Stabilisation; Use of additives
    • C07C273/16—Separation; Purification
    • 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)

Abstract

PURPOSE: To separate an inert gas with little amounts of accompanying NH3 and CO2, by subjecting a synthetic solution in which urea is synthesized at a urea synthesizing pressure near the equilibrium of the urea and the maximal temperature is reached to the heat exchange indirectly with NH3 at the urea synthesizing pressure, and reducing the temperature of the urea synthetic solution to a specific temperature.
CONSTITUTION: A mixed gas of an uncondensed NH3 with CO2 and water containing an inert gas and a condensed ammonium carbamate solution are fed from a carbamate condenser 3 to the bottom of a urea synthesizing tube 1 and reacted with NH3 fed from a tube 5 to form ammonium carbamate, which is then converted into urea while being lifted in the tube 1. NH3, pressurized to a urea synthesizing pressure, and preheated to ordinary temperature W150°C is fed from a line 11 to a cooler 4 dipped in the liquid phase in contact with the gaseous phase at the top of the tube 1 to reduce the temperature of the urea synthetic solution by 5W30°C. The inert gas is taken out of a line 19, and the synthetic solution is lowered in the tube 6, heated to the temperature before the cooling and fed into the top of a stripper 2.
COPYRIGHT: (C)1982,JPO&Japio
JP55160112A 1980-11-15 1980-11-15 Separating method of inert gas Pending JPS5785356A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55160112A JPS5785356A (en) 1980-11-15 1980-11-15 Separating method of inert gas
IN1221/CAL/81A IN153675B (en) 1980-11-15 1981-11-03
BR8107389A BR8107389A (en) 1980-11-15 1981-11-13 PROCESS TO SEPARATE INERT GASES
KR1019810004392A KR870000771B1 (en) 1980-11-15 1981-11-14 Process for separating inert gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160112A JPS5785356A (en) 1980-11-15 1980-11-15 Separating method of inert gas

Publications (1)

Publication Number Publication Date
JPS5785356A true JPS5785356A (en) 1982-05-28

Family

ID=15708110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160112A Pending JPS5785356A (en) 1980-11-15 1980-11-15 Separating method of inert gas

Country Status (4)

Country Link
JP (1) JPS5785356A (en)
KR (1) KR870000771B1 (en)
BR (1) BR8107389A (en)
IN (1) IN153675B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4848421A (en) * 1971-10-19 1973-07-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4848421A (en) * 1971-10-19 1973-07-09

Also Published As

Publication number Publication date
BR8107389A (en) 1982-08-10
IN153675B (en) 1984-08-04
KR870000771B1 (en) 1987-04-15
KR830007531A (en) 1983-10-21

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