JPS6418906A - Production of nitrogen - Google Patents

Production of nitrogen

Info

Publication number
JPS6418906A
JPS6418906A JP62173812A JP17381287A JPS6418906A JP S6418906 A JPS6418906 A JP S6418906A JP 62173812 A JP62173812 A JP 62173812A JP 17381287 A JP17381287 A JP 17381287A JP S6418906 A JPS6418906 A JP S6418906A
Authority
JP
Japan
Prior art keywords
adsorption column
under
condition
adsorption
mixed 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.)
Granted
Application number
JP62173812A
Other languages
Japanese (ja)
Other versions
JPH0825727B2 (en
Inventor
Hiroyuki Tsutaya
Jun Izumi
Yuichi Fujioka
Shozo Kaneko
Susumu Sato
Osao Kudome
Norichika Kai
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP62173812A priority Critical patent/JPH0825727B2/en
Publication of JPS6418906A publication Critical patent/JPS6418906A/en
Publication of JPH0825727B2 publication Critical patent/JPH0825727B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Separation Of Gases By Adsorption (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

PURPOSE:To enable separation of high-performance O2 and N2 under low-temperature and high-pressure adsorption condition, by leading a mixed gas of N2 and O2 to plural adsorption columns filled with Na-X type zeolite, adsorbing and desorbing the N2 under respective specific condition. CONSTITUTION:A mixed gas consisting essentially of O2 and N2 is flowed into plural adsorption columns filled with Na-X type zeolite as an N2 adsorbent below ambient temperature - -30 deg.C under 1-3atm. to selectively adsorb the N2 contained in the mixed gas. The adsorption column under pressurized condition after discharging an O2-enriched gas from the outlet of the adsorption column and adsorbing N2 and adsorption column under reduced pressure condition after regeneration by desorbing and recovering the N2 under reduced pressure condition of 0.05-0.5atm. are communicated on the downstream side thereof to transfer O2 remaining in the adsorption column under the pressurized condition to the adsorption column under the reduced pressure condition after completing regeneration to increase the N2 concentration in the adsorption column under the pressurized condition. Furthermore, the product N2 gas is flowed in the same direction as the introducing direction of the mixed gas to increase the N2 purity in the adsorption column. The adsorption column is subsequently decompressed to 0.05-0.5atm. so as to recover high-purity N2 and simultaneously regenerate the adsorbent.
JP62173812A 1987-07-14 1987-07-14 Nitrogen production method Expired - Fee Related JPH0825727B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62173812A JPH0825727B2 (en) 1987-07-14 1987-07-14 Nitrogen production method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62173812A JPH0825727B2 (en) 1987-07-14 1987-07-14 Nitrogen production method

Publications (2)

Publication Number Publication Date
JPS6418906A true JPS6418906A (en) 1989-01-23
JPH0825727B2 JPH0825727B2 (en) 1996-03-13

Family

ID=15967614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62173812A Expired - Fee Related JPH0825727B2 (en) 1987-07-14 1987-07-14 Nitrogen production method

Country Status (1)

Country Link
JP (1) JPH0825727B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5487775A (en) * 1994-05-09 1996-01-30 The Boc Group, Inc. Continuous pressure difference driven adsorption process
WO2011089703A1 (en) 2010-01-21 2011-07-28 三菱電機株式会社 Brake control device and brake control method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179127A (en) * 1983-03-30 1984-10-11 Mitsubishi Heavy Ind Ltd Separation of oxygen and nitrogen from gaseous mixture under condition of low temperature and low pressure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59179127A (en) * 1983-03-30 1984-10-11 Mitsubishi Heavy Ind Ltd Separation of oxygen and nitrogen from gaseous mixture under condition of low temperature and low pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5487775A (en) * 1994-05-09 1996-01-30 The Boc Group, Inc. Continuous pressure difference driven adsorption process
WO2011089703A1 (en) 2010-01-21 2011-07-28 三菱電機株式会社 Brake control device and brake control method

Also Published As

Publication number Publication date
JPH0825727B2 (en) 1996-03-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees