JPS6467586A - Manufacture of nitrogen - Google Patents

Manufacture of nitrogen

Info

Publication number
JPS6467586A
JPS6467586A JP22476187A JP22476187A JPS6467586A JP S6467586 A JPS6467586 A JP S6467586A JP 22476187 A JP22476187 A JP 22476187A JP 22476187 A JP22476187 A JP 22476187A JP S6467586 A JPS6467586 A JP S6467586A
Authority
JP
Japan
Prior art keywords
nitrogen gas
product
pressure
condenser
reduce
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
JP22476187A
Other languages
Japanese (ja)
Inventor
Ushio Maeda
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.)
Japan Oxygen Co Ltd
Nippon Sanso Corp
Original Assignee
Japan Oxygen Co Ltd
Nippon Sanso 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 Japan Oxygen Co Ltd, Nippon Sanso Corp filed Critical Japan Oxygen Co Ltd
Priority to JP22476187A priority Critical patent/JPS6467586A/en
Publication of JPS6467586A publication Critical patent/JPS6467586A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation By Low-Temperature Treatments (AREA)

Abstract

PURPOSE: To operate a single rectifier in an optimum condition to reduce the cost of a product nitrogen by controlling the feed rate of liquefied air or product nitrogen gas to a condenser-evaporator according to the pressure or flow rate of the product nitrogen. CONSTITUTION: A pressure indicator-adjuster 29 and flow rate indicator-adjuster 30 are attached to an intake duct 28 for a product nitrogen gas PN. When the product nitrogen gas PN demand decreases, a nitrogen gas intake valve 21 is restricted to increase the amt. of nitrogen gas GN in the system and pressure in the intake duct 28 rises, a liquefied air valve 25 is opened accordingly to increase the feed rate of liquefied air LA to the condenser-evaporator 5 from a single rectifier, excessive nitrogen gas GN is liquefied and the nitrogen gas GN is decreased in the system. When the product gas PN demand increases, the intake valve 21 is opened to reduce the pressure in the intake duct 28, the liquefied air valve 25 is restricted accordingly to reduce the feed rate of the air LA to the condenser-evaporator 5, the liquefying rate of the nitrogen gas GN is reduced and the amt. of the product nitrogen gas PN is increased.
JP22476187A 1987-09-08 1987-09-08 Manufacture of nitrogen Pending JPS6467586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22476187A JPS6467586A (en) 1987-09-08 1987-09-08 Manufacture of nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22476187A JPS6467586A (en) 1987-09-08 1987-09-08 Manufacture of nitrogen

Publications (1)

Publication Number Publication Date
JPS6467586A true JPS6467586A (en) 1989-03-14

Family

ID=16818819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22476187A Pending JPS6467586A (en) 1987-09-08 1987-09-08 Manufacture of nitrogen

Country Status (1)

Country Link
JP (1) JPS6467586A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09217982A (en) * 1996-02-09 1997-08-19 Nippon Sanso Kk Method for liquefying and separating air and apparatus therefor
JP2010243143A (en) * 2009-03-16 2010-10-28 Jfe Steel Corp Method and device of separating component of air

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09217982A (en) * 1996-02-09 1997-08-19 Nippon Sanso Kk Method for liquefying and separating air and apparatus therefor
JP2010243143A (en) * 2009-03-16 2010-10-28 Jfe Steel Corp Method and device of separating component of air

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