JPS6454187A - Manufacture of nitrogen gas - Google Patents

Manufacture of nitrogen gas

Info

Publication number
JPS6454187A
JPS6454187A JP21082587A JP21082587A JPS6454187A JP S6454187 A JPS6454187 A JP S6454187A JP 21082587 A JP21082587 A JP 21082587A JP 21082587 A JP21082587 A JP 21082587A JP S6454187 A JPS6454187 A JP S6454187A
Authority
JP
Japan
Prior art keywords
nitrogen gas
pressure
product nitrogen
condensing evaporator
fluctuations
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
JP21082587A
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 JP21082587A priority Critical patent/JPS6454187A/en
Publication of JPS6454187A publication Critical patent/JPS6454187A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04812—Different modes, i.e. "runs" of operation
    • F25J3/04836—Variable air feed, i.e. "load" or product demand during specified periods, e.g. during periods with high respectively low power costs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/044—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a single pressure main column system only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

PURPOSE: To control the amount of sampling nitrogen gas according to the fluctuations in demand, by detecting the pressure of product nitrogen gas, and by regulating the quantity of liquefied air to be introduced into a condensing evaporator from the bottom part of a single rectifying column, and the quantity of the product nitrogen gas by this detection signal. CONSTITUTION: The pressure inside a gas collecting conduit 24 that is generated by the fluctuations in demand of product nitrogen gas PN is detected by a pressure indication regulator 25, and the quantity of liquefied air LA to be introduced into a condensing evaporator 5 is controlled by the detection signal 29, so as to control the quantity of the liquefied air LA that performs heat exchanges by the condensing evaporator 5, namely the quantity of liquefying the nitrogen gas GN. Therefore, the quantity and pressure of the product nitrogen gas PN can be the optimum values. Moreover, a nitrogen gas sampling valve 21 is controlled by the detection signal 29 according to the pressure of the product nitrogen gas PN, and the pressure that is necessary for the nitrogen gas GN to be condensed by the condensing evaporator 5 can be maintained. Further, the product nitrogen gas PN according to the fluctuations in demand can be sampled without deteriorating the efficiency of separation.
JP21082587A 1987-08-25 1987-08-25 Manufacture of nitrogen gas Pending JPS6454187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21082587A JPS6454187A (en) 1987-08-25 1987-08-25 Manufacture of nitrogen gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21082587A JPS6454187A (en) 1987-08-25 1987-08-25 Manufacture of nitrogen gas

Publications (1)

Publication Number Publication Date
JPS6454187A true JPS6454187A (en) 1989-03-01

Family

ID=16595742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21082587A Pending JPS6454187A (en) 1987-08-25 1987-08-25 Manufacture of nitrogen gas

Country Status (1)

Country Link
JP (1) JPS6454187A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994024501A1 (en) * 1993-04-22 1994-10-27 Nippon Sanso Corporation Method of and apparatus for manufacturing various kinds of gases to be supplied to semiconductor manufacturing factories
JP2006132854A (en) * 2004-11-08 2006-05-25 Taiyo Nippon Sanso Corp Nitrogen manufacturing method and device
JP2008275313A (en) * 2008-06-23 2008-11-13 Taiyo Nippon Sanso Corp Nitrogen producing method and device
WO2009064578A2 (en) * 2007-11-14 2009-05-22 Praxair Technology, Inc. Cryogenic variable liquid production method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998392A (en) * 1973-01-26 1974-09-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998392A (en) * 1973-01-26 1974-09-18

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994024501A1 (en) * 1993-04-22 1994-10-27 Nippon Sanso Corporation Method of and apparatus for manufacturing various kinds of gases to be supplied to semiconductor manufacturing factories
US5656557A (en) * 1993-04-22 1997-08-12 Nippon Sanso Corporation Process for producing various gases for semiconductor production factories
JP2006132854A (en) * 2004-11-08 2006-05-25 Taiyo Nippon Sanso Corp Nitrogen manufacturing method and device
WO2009064578A2 (en) * 2007-11-14 2009-05-22 Praxair Technology, Inc. Cryogenic variable liquid production method
WO2009064578A3 (en) * 2007-11-14 2010-10-28 Praxair Technology, Inc. Cryogenic variable liquid production method
US8429933B2 (en) 2007-11-14 2013-04-30 Praxair Technology, Inc. Method for varying liquid production in an air separation plant with use of a variable speed turboexpander
JP2008275313A (en) * 2008-06-23 2008-11-13 Taiyo Nippon Sanso Corp Nitrogen producing method and device

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