KR20170085449A - 공기 분리 플랜트에서 공기 생성물을 얻는 방법 및 공기 분리 플랜트 - Google Patents
공기 분리 플랜트에서 공기 생성물을 얻는 방법 및 공기 분리 플랜트 Download PDFInfo
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- KR20170085449A KR20170085449A KR1020170005433A KR20170005433A KR20170085449A KR 20170085449 A KR20170085449 A KR 20170085449A KR 1020170005433 A KR1020170005433 A KR 1020170005433A KR 20170005433 A KR20170005433 A KR 20170005433A KR 20170085449 A KR20170085449 A KR 20170085449A
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- 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
- F25J3/04848—Control strategy, e.g. advanced process control or dynamic modeling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/04084—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of nitrogen
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- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
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- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
- F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
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- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
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- F25J3/04096—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of argon or argon enriched stream
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- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
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- 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
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- 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
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- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
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- 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
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- 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
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 탱크 시스템을 개략적 플랜트 다이어그램의 형태로 도시한다.
도 3는 본 발명의 일 실시예에 따른 탱크 시스템을 개략적 플랜트 다이어그램의 형태로 도시한다.
Claims (14)
- 제 1 탱크(71) 및 제 2 탱크(72)를 갖는 탱크 시스템(tank system)(70)과 증류 칼럼 시스템(distillation column system)(12, 38)을 갖는 공기 분리 플랜트(air separation plant)(100)를 사용하여 공기 생성물(air product)(GOX-IC)을 획득하기 위한 방법으로서,
극저온 액체(cryogenic liquid)(41)가 상기 증류 칼럼 시스템(12, 38)으로부터 회수되고, 상기 탱크 시스템(70)에 적어도 부분적으로 저장되며, 그 후에 공기 생성물(GOX- IC)로서 적어도 부분적으로 사용되며, 상기 극저온 액체(41)는 제 1 기간 동안, 제 1 탱크(71)로 공급되고 제 2 탱크(72)에는 공급되지 않으며, 제 2 기간 동안, 제 2 탱크(72)로 공급되고 제 1 탱크(71)에는 공급되지 않으며, 제 1 기간 동안, 제 2 탱크(72)로부터 회수되고 제 1 탱크(71)로부터 회수되지 않으며, 제 2 기간 동안, 제 1 탱크(71)로부터 회수되고 제 2 탱크(72)로부터 회수되지 않는, 공기 생성물(GOX-IC)을 획득하기 위한 방법에 있어서,
상기 탱크 시스템(70)은 추가의 제 3 탱크(73)를 포함하고, 상기 제 1 기간 동안 상기 제 2 탱크(72)로부터 회수되고 그리고 상기 제 2 기간 동안 상기 제 1 탱크(71)로부터 회수되는 상기 극저온 액체(41)는 상기 제 3 탱크(73)로 적어도 부분적으로 가열되지 않은 상태로 전달되며,
상기 공기 생성물은 적어도 부분적으로 상기 제 3 탱크(73)에 또는 그의 일부에 전달되고 가열되지 않은 극저온 액체를 사용함으로써 제공되고, 상기 공기 생성물(GOX-IC)을 제공하기 위해 사용되는 제 3 탱크(73)로부터의 극저온 액체는 액체로부터 초임계 상태(supercritical state)로 증발되거나 전환되며, 상기 공기 분리 플랜트(100)로부터 배출되며 그리고/또는
상기 공기 생성물(GOX-IC)를 제공하기 위해 사용되는 제 3 탱크(73)로부터의 극저온 액체는 액체 상태로 상기 제 3 탱크(73)로부터 회수되고 액체 상태로 제 4 탱크(76)에 저장되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 항에 있어서,
상기 극저온 액체(41)는 제 1 압력 레벨로 상기 제 1 탱크(71) 및 상기 제 2 탱크(72)에 공급되고 그리고/또는 상기 극저온 액체(41)는 더 높은 제 2 압력 레벨로 상기 제 3 탱크(73)에 저장되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 2 항에 있어서,
상기 제 1 압력 레벨은 1.3 bar 내지 7 bar이고, 상기 제 2 압력 레벨은 2 bar 내지 100 bar인 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 2 항 또는 제 3 항에 있어서,
상기 극저온 액체(41)는 액체 상태에서 그리고 펌프(55)를 사용하여 상기 제 1 탱크(71) 내로 그리고 상기 제 2 탱크(72) 내로 도입되기 이전에 상기 제 1 압력 레벨로부터 상기 제 2 압력 레벨로 상승되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 극저온 액체(41)는 상기 제 1 탱크(71) 및 상기 제 2 탱크(72)에서 상기 제 2 압력 레벨로의 가압 증발을 수행하는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
상기 제 1 기간 동안, 상기 제 1 탱크(71)에 공급되고 상기 제 2 기간 동안, 상기 제 2 탱크(72)에 공급되는 상기 극저온 액체(41)의 순도는, 상기 각각의 탱크(71, 72) 내에 결정되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 6 항에 있어서,
상기 극저온 액체(41)는, 그의 순도가 단지 설정값에 대응한다면, 상기 제 1 기간 동안, 상기 제 2 탱크(72)로부터 상기 제 3 탱크(73)로 전달되고, 상기 제 2 기간 동안, 상기 제 1 탱크(71)로부터 상기 제 3 탱크(73)로 전달되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 7 항에 있어서,
상기 극저온 액체(41)의 순도가 상기 설정 값과 대응하지 않으면, 상기 유체는 상기 제 1 기간 동안, 상기 제 2 탱크(72)로부터 그리고 상기 제 2 기간 동안 상기 제 1 탱크(71)로부터, 상기 증류 칼럼 시스템(12, 38)으로 복귀되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,
상기 제 3 탱크(73)는 상기 제 1 탱크(71) 및/또는 상기 제 2 탱크(72)에 저장될 수 있는 상기 극저온 액체(41)의 양만큼 적어도 큰 상기 극저온 액체(41)의 양을 보유하는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 항 내지 제 9 항 중 어느 한 항에 있어서,
상기 증류 칼럼 시스템(12, 38)은 제 1 분리 칼럼(12) 및 제 2 분리 칼럼(38)을 포함하며, 상기 제 1 분리 칼럼(12)은 제 1 산소 함량으로 풍부화되고 상기 제 2 분리 칼럼(38)에서 사용되는 유체 스트림(36)을 생성하기 위해 사용되어 적어도 부분적으로 상기 극저온 액체(41)로서 상기 제 2 분리 칼럼(38)으로부터 회수되는 순수한 액체 산소를 생성하는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 8 항에 있어서,
상기 제 1 분리 칼럼(12)은 제 2 산소 함량으로 풍부화되는 유체 스트림(18) 및 제 3 산소 함량으로 풍부화된 유체 스트림(14)을 생성하고, 상이한 온도들로 이들을 가열하기 위해 추가로 사용되며, 상기 제 2 산소 함량으로 풍부화되는 상기 가열된 유체 스트림(14)은 확관기(expansion machine)(21)에 커플링되는 압축기(30)에서 적어도 부분적으로 압축되고, 냉각되어 상기 제 1 분리 칼럼(12)으로 복귀되고, 상기 제 3 산소 함량으로 풍부화된 상기 가열된 유체 스트림(14)의 일부는 상기 확관기(21)를 구동시키는데 사용되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 항 내지 제 11 항 중 어느 한 항에 있어서,
상기 공기 분리 플랜트(100) 및/또는 증발기(80)의 주 열교환기(9)가 상기 극저온 액체(41)를 가열하기 위해 사용되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위한 방법. - 제 1 탱크(71) 및 제 2 탱크(72)를 갖는 탱크 시스템(70)과 증류 칼럼 시스템(12, 38)을 갖는, 공기 생성물(GOX-IC)을 획득하기 위해 설계된, 공기 분리 플랜트(100)로서,
극저온 액체(41)를 상기 증류 칼럼 시스템(12, 38)으로부터 회수하고, 상기 탱크 시스템(70)에 이 액체의 적어도 일부를 저장하며, 그 후에 상기 공기 생성물(GOX- IC)로서 이의 적어도 일부를 사용는 수단, 상기 극저온 액체(41)를 제 1 기간 동안, 상기 제 1 탱크(71)로 공급하고 상기 제 2 탱크(72)에 공급하지 않으며, 제 2 기간 동안, 상기 제 2 탱크(72)로 공급되고 상기 제 1 탱크(71)에는 공급되지 않으며, 제 1 기간 동안, 상기 액체를 상기 제 2 탱크(72)로부터 회수하고 상기 제 1 탱크(71)로부터 회수하지 않으며, 제 2 기간 동안, 상기 제 1 탱크(71)로부터 회수하고 상기 제 2 탱크(72)로부터 회수하지 않도록 설계되는 수단을 포함하는, 공기 생성물(GOX-IC)을 획득하기 위해 설계된, 공기 분리 플랜트에 있어서,
상기 탱크 시스템(70)은 추가의 제 3 탱크(73)를 포함하고, 상기 제 3 탱크(73)에서, 상기 제 1 기간 동안 상기 제 2 탱크(72)로부터 회수되고 그리고 상기 제 2 기간 동안 상기 제 1 탱크(71)로부터 회수되는 상기 극저온 액체(41)를 적어도 일시적으로 그리고 적어도 부분적으로 가열되지 않은 상태로 상기 제 3 탱크(73)로 또는 그의 일부로 전달하도록 설계되는 수단이 제공되며, 상기 공기 생성물(GOX-IC)을 제공하기 위해 사용되는 제 3 탱크(73)로부터의 극저온 액체를 액체 상태의 상기 제 3 탱크(73)로부터 회수하고, 상기 액체 상태로부터 상기 초임계 상태로 이 극저온 액체를 증발하거나 전환시키며, 상기 공기 분리 플랜트(100)로부터 이를 배출하도록 설계되며 그리고/또는 상기 공기 생성물(GOX-IC)를 제공하기 위해 사용되는 상기 제 3 탱크(73)로부터의 극저온 액체를 액체 상태의 상기 제 3 탱크(73)로부터 회수하고 액체 상태로 제 4 탱크(76)에 이를 저장하도록 설계되는 수단이 제공되는 것을 특징으로 하는,
공기 생성물(GOX-IC)을 획득하기 위해 설계된, 공기 분리 플랜트 - 제 13 항에 있어서,
제 1 항 내지 제 12 항 중 어느 한 항에 따른 방법을 실행하기 위해 설계된 공기 분리 플랜트(100).
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