KR950003776A - 공기의 분리방법 - Google Patents

공기의 분리방법 Download PDF

Info

Publication number
KR950003776A
KR950003776A KR1019940009470A KR19940009470A KR950003776A KR 950003776 A KR950003776 A KR 950003776A KR 1019940009470 A KR1019940009470 A KR 1019940009470A KR 19940009470 A KR19940009470 A KR 19940009470A KR 950003776 A KR950003776 A KR 950003776A
Authority
KR
South Korea
Prior art keywords
rectifier
oxygen
liquid
vapor
pressure
Prior art date
Application number
KR1019940009470A
Other languages
English (en)
Other versions
KR100291684B1 (ko
Inventor
래쓰본 토마스
Original Assignee
마이클 위크햄
더 비오씨 그룹 피엘씨
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26303180&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR950003776(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB939313839A external-priority patent/GB9313839D0/en
Application filed by 마이클 위크햄, 더 비오씨 그룹 피엘씨 filed Critical 마이클 위크햄
Publication of KR950003776A publication Critical patent/KR950003776A/ko
Application granted granted Critical
Publication of KR100291684B1 publication Critical patent/KR100291684B1/ko

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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
    • F25J3/042—Division of the main heat exchange line in consecutive sections having different functions having an intermediate feed connection
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
    • F25J3/04206—Division of the main heat exchange line in consecutive sections having different functions including a so-called "auxiliary vaporiser" for vaporising and producing a gaseous product
    • F25J3/04212—Division of the main heat exchange line in consecutive sections having different functions including a so-called "auxiliary vaporiser" for vaporising and producing a gaseous product and simultaneously condensing vapor from a column serving as reflux within the or another column
    • 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
    • F25J3/0429—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 of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
    • 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
    • F25J3/04406—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 dual pressure main column system
    • F25J3/04418—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 dual pressure main column system with thermally overlapping high and low pressure columns
    • 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
    • F25J3/04436—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 at least a triple pressure main column system
    • F25J3/04448—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 at least a triple pressure main column system in a double column flowsheet with an intermediate pressure column
    • 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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04884—Arrangement of reboiler-condensers
    • 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
    • F25J2200/20—Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere
    • 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
    • F25J2200/34—Processes or apparatus using separation by rectification using a side column fed by a stream from the low pressure column
    • 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
    • F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/54—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the low pressure column of a double pressure main column system
    • 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
    • F25J2200/90—Details relating to column internals, e.g. structured packing, gas or liquid distribution
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/52—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen enriched compared to air ("crude oxygen")
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/42—One fluid being nitrogen
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/50—One fluid being oxygen
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/30—External or auxiliary boiler-condenser in general, e.g. without a specified fluid or one fluid is not a primary air component or an intermediate fluid
    • F25J2250/52—One fluid being oxygen enriched compared to air, e.g. "crude oxygen"
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/90—Triple column
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/939—Partial feed stream expansion, air
    • Y10S62/94—High pressure column

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)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

냉각 및 정제된 공기의 제 1 스트림을 유입구(14)를 통해 고압 정류관(12)에 유입시키고 산소가 풍부한 액체 및 직소 증기로 분리한다. 산소가 풍부한 액체 스트림을 감압 벨브(40)를 통해 중간정류관(22)으로 플래싱시키고, 중간 정류관(22)에서 산소가 더욱 풍부한 액체 및 중간 질소 증기로 분리한다. 산소가 더욱 풍부한 액체 스트림을 응축기-리보일러(46)에서 리보일링시키고, 상단(58) 및 하단(60)을포함하는 저압 정류기(34)내로 유입시킨다. 저압 정류관(34)은 냉각 및 정제된 공기의 제 2 스트림에 의해 가열되는 기부의 응축기-리보일러(16)를 갖고 있다. 제 2스트림을 리보일러(16)에서 자체로 응축시키고, 고압관(12)에 유입시킨다. 또한, 저압 응축기도 고압 정류관내에서 분리된 질소 증기를 응축시키므로써 정류를 위한 액체 질소 환류물을 형성하는데 사용하는 중간 응축기-리보일러(22)를 갖는다. 본 공정의 또다른 실례로서, 밸브(46)를 통해 플래슁되는 액체는 정류가 아닌 상분리를 받게된다.

Description

공기의 분리방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 본 발명에 따른 제 1 기체 분리 장치의 도시적 흐름도이다. 제 2 도는 본 발명에 따른 제 2 기체 분리 장치의 도시적 흐름도이다. 제 3 도는 제 2 도에 나타낸 장치의 작동에 대한 맥카베-티엘(McCabe-Thieie)의 다이어 그램이다.

Claims (18)

  1. a)고압 정류기에서 예비냉각 및 정제된 공기를 산소가 풍부한 액체 및 질소 증기로 분리하는 단계: b)고압 정류기의 상부 압력과 저압 정류기의 기부 압력 사이의 압력에서 산소가 풍부한 액체 스트림을 분리하여 산소가 더욱 풍부한 액체 및 중간 증기를 형성시키는 단계: c)저압 정류기에서 산소가 더욱 풍부한 액체 스트림을 산소 및 질소로 분리하는 단계: 및 d)액체 질소 환류물을 고압 및 저압 정류기에 제공하는 단계를 포함하며, 이때, 저압 정류기의 중간 물질전달 영역으로부터 나온 액체와의 간접적인 열교환에 상기 질소 증기 스트림을 응축시킴으ㄹ써 액체 질소 환류물의 일부를 형성시키는 공기 분리 방법.
  2. 제 1 항에 있어서, 중간 증기를, 열교환기의 상부에서 압력이 감소되는 상기 산소가 더욱 풍부한 액체 스트림과 간접적인 열교환에 의해 응축시키고: 산소가 더욱 풍부한 액체 스트림을 중간 증기와의 열교환에 의해 부분적으로 증발시키고, 부분적으로 증발된 산소가 더욱 풍부한 액체를 저압 정류기로 유입시키는 방법.
  3. 제 1 항에 있어서, 중간 증기를 저압 정류기의 중간 물질 절단 영역으로부터 취한 액체와의 간접적인 열교환에 의해 응축시키는 방법.
  4. 제 1 내지 제 3 항중 어느 한 항에 있어서, (b) 단계의 분리공정을 추가의 정류기에서 정류에 의해 수행하는 방법.
  5. 제 4 항에 있어서, 산소가 풍부한 액체 스트림을 추가의 정류기에서 모든 증기-액체 물질 교환 수단의 하부로 유입시키고, 추가의 정류기에서 생성된 중간 증기가 질소인 방법.
  6. 제 5 항에 있어서, 응축된 중간 증기의 일부분을 추가의 정류기에서 환류물로서 사용하고, 응축된 중간 증기의 또다른 일부분을 저압 정류기에서 환류물로 사용하는 방법
  7. 제4 내지 제 6 항중 어느 한 항에 있어서, 추가의 정류기의 기부중에 있는 액체의 일부 또는 추가의 정류기에 대한 공급물의 일부를 리보일링시키는 방법.
  8. 제 1 항 내지 제 4 항중 어느 한 항에 있어서, 상기 (b)단계를, 고압 정류기의 상부 압력과 저압 정류기의 기부 압력 사이의 압력에서 산소가 풍부한 액체 스트림을 플래슁시켜 액체-증기 혼합물을 형성하고, 생성된 액체-증기 혼합물을 액체와 증기상으로 분리하여 산소가 더욱 풍부한 액체 및 중간 증기를 형성함으로써 수행하고, 산소가 더욱 풍부한 액체의 일부분을 리보일링하여 중간 증기의 형성 속도를 향상시키는 방법.
  9. 제 8 항에 있어서, 중간 증기를 응축시키고, 생성된 응축물을 고압 정류기로 회수하는 방법.
  10. 제 8 항 또는 제 9 항에 있어서, 산소가 더욱 풍부한 액체의 일부분을 리보일링하여 중간 증기의 형성 속도를 향상시키는 방법.
  11. 제 7 항 또는 제10항에 있어서, 상기 리보일링을, 고압 정류기부터 나온 질소 증기 스트림과의 간접적인 열교환에 의해 수행하여 질소 증기 스트림을 응축시키는 방법.
  12. 제11항에 있어서, 산소가 더욱 풍부한 액체의 리보일링시에 형성된 응축 질소 증기를 고압 정류관에서 환류물로서 사용하는 방법.
  13. 제 1 항내지 제12항중 어느 한 항에 있어서, 저압 정류기에 대한 리보일링을 예비 냉각 및 정제된 공급 공기 스트림과의 간접적 열 교환에 의해 제공하여 공급 공기 스트림을 적어도 부분적으로 응축시키는 방법.
  14. (a)예비 냉각 및 정제된 공기를 산소가 풍부한 액체 및 질소 증기로 분리하기 위한 고압 정류기, (b)산소 및 질소를 생성시키기 위한 저압 정류기,(c)산소가 더욱 풍부한 액체 및 중간 증기를 생성시키기 위해 고압 정류기의 상부 압력과 저압 정류기의 기부 압력 사이의 압력에서 상소가 풍부한 액체 스트림을 분리하기 위한 수단,(d)산소가 더욱 풍부한 액체 스트림을 산소 및 질소로 분리하기 위해 저압 정류기로 유입시키기 위한 수단, 및 (e)상기 질소 증기 스트림을 저압 정류기의 중간 물질 전달 영역의 액체와 간접적으로 열 교환시키기 위한 응축기를 포함하여 고압 및 저압 정류기에 액체 질소 환류물을 제공하기 위한 수단을 포함하는 공기 분리 장치.
  15. 제14항에 있어서, 상기 분리 수단이 추가의 정류기를 포함하는 장치.
  16. 제14항에 있어서, 상기 분리 수단이 감압 밸브 및 상기 감압 밸브의 하부측면상에 있는 상분리기를 포함하는 장치.
  17. 제15항에 있어서, 상기 추가의 정류기가 응축기 및 그에 연결된 리보일러를 갖는 장치.
  18. 제16항에 있어서, 상분리기의 상부에 또는 상분리기 안에 리보일러를 추가로 포함하는 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940009470A 1993-07-05 1994-04-30 공기의분리방법 KR100291684B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9313839.4 1993-07-05
GB939313839A GB9313839D0 (en) 1993-07-05 1993-07-05 Air separation
GB9405071.3 1994-03-16
GB9405071A GB9405071D0 (en) 1993-07-05 1994-03-16 Air separation

Publications (2)

Publication Number Publication Date
KR950003776A true KR950003776A (ko) 1995-02-17
KR100291684B1 KR100291684B1 (ko) 2001-09-17

Family

ID=26303180

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940009470A KR100291684B1 (ko) 1993-07-05 1994-04-30 공기의분리방법

Country Status (12)

Country Link
US (1) US5438835A (ko)
EP (1) EP0633438B2 (ko)
JP (1) JPH0719727A (ko)
KR (1) KR100291684B1 (ko)
CN (1) CN1097247A (ko)
AU (1) AU682848B2 (ko)
DE (1) DE69417299T3 (ko)
ES (1) ES2130355T5 (ko)
GB (1) GB9405071D0 (ko)
NZ (1) NZ260393A (ko)
PL (1) PL175600B1 (ko)
TW (1) TW314475B (ko)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69419675T2 (de) * 1993-04-30 2000-04-06 The Boc Group Plc Lufttrennung
US5463871A (en) * 1994-10-04 1995-11-07 Praxair Technology, Inc. Side column cryogenic rectification system for producing lower purity oxygen
GB9500120D0 (en) * 1995-01-05 1995-03-01 Boc Group Plc Air separation
DE19609490A1 (de) * 1995-03-10 1996-09-12 Linde Ag Verfahren und Vorrichtung zur Tieftemperaturzerlegung von Luft
GB9513766D0 (en) * 1995-07-06 1995-09-06 Boc Group Plc Air separation
GB9521782D0 (en) * 1995-10-24 1996-01-03 Boc Group Plc Air separation
US5628207A (en) * 1996-04-05 1997-05-13 Praxair Technology, Inc. Cryogenic Rectification system for producing lower purity gaseous oxygen and high purity oxygen
US5669236A (en) * 1996-08-05 1997-09-23 Praxair Technology, Inc. Cryogenic rectification system for producing low purity oxygen and high purity oxygen
GB9618576D0 (en) * 1996-09-05 1996-10-16 Boc Group Plc Air separation
GB9618577D0 (en) * 1996-09-05 1996-10-16 Boc Group Plc Air separation
GB9619718D0 (en) * 1996-09-20 1996-11-06 Boc Group Plc Air separation
GB9619717D0 (en) * 1996-09-20 1996-11-06 Boc Group Plc Air separation
US5675977A (en) * 1996-11-07 1997-10-14 Praxair Technology, Inc. Cryogenic rectification system with kettle liquid column
US6009723A (en) * 1998-01-22 2000-01-04 Air Products And Chemicals, Inc. Elevated pressure air separation process with use of waste expansion for compression of a process stream
FR2778234B1 (fr) * 1998-04-30 2000-06-02 Air Liquide Installation de distillation d'air et boite froide correspondante
FR2787559A1 (fr) * 1998-12-22 2000-06-23 Air Liquide Procede et installation de separation d'air par distillation cryogenique
US6053008A (en) * 1998-12-30 2000-04-25 Praxair Technology, Inc. Method for carrying out subambient temperature, especially cryogenic, separation using refrigeration from a multicomponent refrigerant fluid
US6112550A (en) * 1998-12-30 2000-09-05 Praxair Technology, Inc. Cryogenic rectification system and hybrid refrigeration generation
US6116052A (en) * 1999-04-09 2000-09-12 Air Liquide Process And Construction Cryogenic air separation process and installation
US6347534B1 (en) 1999-05-25 2002-02-19 Air Liquide Process And Construction Cryogenic distillation system for air separation
US6196024B1 (en) 1999-05-25 2001-03-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Cryogenic distillation system for air separation
US6276170B1 (en) 1999-05-25 2001-08-21 Air Liquide Process And Construction Cryogenic distillation system for air separation
US6202441B1 (en) 1999-05-25 2001-03-20 Air Liquide Process And Construction, Inc. Cryogenic distillation system for air separation
GB0002084D0 (en) * 2000-01-28 2000-03-22 Boc Group Plc Air separation method
GB0002086D0 (en) * 2000-01-28 2000-03-22 Boc Group Plc Air separation
US20040020239A1 (en) * 2002-03-08 2004-02-05 Laforce Craig Steven Method of producing an oxygen-enriched air stream
JP2005522629A (ja) * 2002-04-11 2005-07-28 エイ． ハーゼ，リチャード 水燃焼技術−水素と酸素を燃焼させる方法、プロセス、システム及び装置
US8268269B2 (en) 2006-01-24 2012-09-18 Clearvalue Technologies, Inc. Manufacture of water chemistries
FR2930328A1 (fr) * 2008-04-22 2009-10-23 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
WO2009130430A2 (fr) * 2008-04-22 2009-10-29 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et appareil de separation d'air par distillation cryogenique
FR2968749A1 (fr) * 2010-12-13 2012-06-15 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
CN102530892A (zh) * 2011-07-21 2012-07-04 上海启元空分技术发展股份有限公司 一种生产高纯氮和带压低纯氧的方法
JP5685168B2 (ja) * 2011-09-13 2015-03-18 大陽日酸株式会社 低純度酸素の製造方法及び低純度酸素の製造装置
CN112452095B (zh) * 2020-11-10 2022-11-08 中国石油化工股份有限公司 一种改进的尾气精馏方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210951A (en) † 1960-08-25 1965-10-12 Air Prod & Chem Method for low temperature separation of gaseous mixtures
US3113854A (en) † 1960-08-25 1963-12-10 Air Prod & Chem Method and apparatus for separating gaseous mixtures
GB2057660B (en) * 1979-05-17 1983-03-16 Union Carbide Corp Process and apparatus for producing low purity oxygen
US4604116A (en) * 1982-09-13 1986-08-05 Erickson Donald C High pressure oxygen pumped LOX rectifier
US4702757A (en) † 1986-08-20 1987-10-27 Air Products And Chemicals, Inc. Dual air pressure cycle to produce low purity oxygen
US4769055A (en) † 1987-02-03 1988-09-06 Erickson Donald C Companded total condensation reboil cryogenic air separation
US4895583A (en) † 1989-01-12 1990-01-23 The Boc Group, Inc. Apparatus and method for separating air
US4936099A (en) † 1989-05-19 1990-06-26 Air Products And Chemicals, Inc. Air separation process for the production of oxygen-rich and nitrogen-rich products
US5235816A (en) * 1991-10-10 1993-08-17 Praxair Technology, Inc. Cryogenic rectification system for producing high purity oxygen
US5231837A (en) † 1991-10-15 1993-08-03 Liquid Air Engineering Corporation Cryogenic distillation process for the production of oxygen and nitrogen
US5257504A (en) † 1992-02-18 1993-11-02 Air Products And Chemicals, Inc. Multiple reboiler, double column, elevated pressure air separation cycles and their integration with gas turbines
CN1071444C (zh) * 1992-02-21 2001-09-19 普拉塞尔技术有限公司 生产气体氧的低温空气分离系统
US5263327A (en) * 1992-03-26 1993-11-23 Praxair Technology, Inc. High recovery cryogenic rectification system
US5245832A (en) * 1992-04-20 1993-09-21 Praxair Technology, Inc. Triple column cryogenic rectification system
US5233838A (en) * 1992-06-01 1993-08-10 Praxair Technology, Inc. Auxiliary column cryogenic rectification system

Also Published As

Publication number Publication date
AU682848B2 (en) 1997-10-23
KR100291684B1 (ko) 2001-09-17
NZ260393A (en) 1996-07-26
TW314475B (ko) 1997-09-01
AU6073594A (en) 1995-01-12
DE69417299T3 (de) 2002-08-22
GB9405071D0 (en) 1994-04-27
EP0633438A1 (en) 1995-01-11
US5438835A (en) 1995-08-08
EP0633438B2 (en) 2002-04-17
DE69417299T2 (de) 1999-07-15
PL303271A1 (en) 1995-01-09
ES2130355T3 (es) 1999-07-01
CN1097247A (zh) 1995-01-11
EP0633438B1 (en) 1999-03-24
ES2130355T5 (es) 2002-12-01
DE69417299D1 (de) 1999-04-29
PL175600B1 (pl) 1999-01-29
JPH0719727A (ja) 1995-01-20

Similar Documents

Publication Publication Date Title
KR950003776A (ko) 공기의 분리방법
US5582035A (en) Air separation
JPH0755333A (ja) 低圧作動のための極低温精留システム
KR860001999A (ko) 초고순도 산소의 제조방법
KR880700227A (ko) 공기증류로부터 증가된 아르곤회수
KR100442464B1 (ko) 극저온 정류를 위한 환형 컬럼
KR860004294A (ko) 보조 리보일러를 추진력으로 하는 혼성 질소 발생기
KR950003774A (ko) 저순도 산소 제조용 저온 정류 시스템
DE69619062D1 (de) Lufttrennungsverfahren und Vorrichtung zur Herstellung von Stickstoff
US4732598A (en) Dephlegmator process for nitrogen rejection from natural gas
US4568528A (en) Process to produce a krypton-xenon concentrate and a gaseous oxygen product
KR20000006031A (ko) 극저온공기분리공정에의한아르곤제조방법
KR970010644A (ko) 초-고순도 산소의 제조 방법
KR900007209B1 (ko) 보조 컬럼을 추진력으로 하는 혼성 질소 발생기
US4647299A (en) Process to produce an oxygen-free krypton-xenon concentrate
KR20010105207A (ko) 분기된 탕관 환류를 갖는 극저온 공기 분리 시스템
EP0701099B1 (en) High purity nitrogen production process
JPH02282684A (ja) 超高純度窒素を製造するための極低温精留方法
KR100407184B1 (ko) 초고순도 질소 및 초고순도 산소를 제조하기 위한 극저온 정류 시스템
AU706680B2 (en) Air separation
JPH0655001A (ja) 塔間熱的結合した多塔式蒸留方法
KR970004729B1 (ko) 극저온 공기 분리방법 및 장치
KR0144127B1 (ko) 질소와 극고순도의 산소를 제조하기 위한 저온 정류시스템
KR100343277B1 (ko) 고순도산소및저순도산소제조방법및장치
US7299656B2 (en) Cryogenic rectification system for neon production

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee