JP4301452B2 - 気体濃縮方法およびその装置 - Google Patents
気体濃縮方法およびその装置 Download PDFInfo
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- JP4301452B2 JP4301452B2 JP2004566469A JP2004566469A JP4301452B2 JP 4301452 B2 JP4301452 B2 JP 4301452B2 JP 2004566469 A JP2004566469 A JP 2004566469A JP 2004566469 A JP2004566469 A JP 2004566469A JP 4301452 B2 JP4301452 B2 JP 4301452B2
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- 238000000034 method Methods 0.000 title claims abstract description 96
- 238000001179 sorption measurement Methods 0.000 claims abstract description 216
- 239000007789 gas Substances 0.000 claims abstract description 206
- 238000004519 manufacturing process Methods 0.000 claims abstract description 134
- 230000008569 process Effects 0.000 claims abstract description 67
- 239000003463 adsorbent Substances 0.000 claims abstract description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000001301 oxygen Substances 0.000 claims abstract description 30
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 30
- 238000003795 desorption Methods 0.000 claims description 20
- 239000000047 product Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
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- 238000010924 continuous production Methods 0.000 abstract description 6
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 239000002808 molecular sieve Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000274 adsorptive effect Effects 0.000 description 2
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- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000252229 Carassius auratus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/0476—Vacuum pressure swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/12—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40003—Methods relating to valve switching
- B01D2259/40005—Methods relating to valve switching using rotary valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
Description
しかし、かかる工程は、吐出圧力が激しく変動するので、偏差を減らすためには吸着ベッドの個数を増やす必要がある。マルチベッドシステムは効率面で好ましいが、小型化に限界があり、前記PSA装置は医療用高濃度システムには有利であるが、濃度よりは生産量本位の家電用には不利であり、初期製作費用が割りに高いという短所がある。
本発明は、大気圧より高い圧力と大気圧で行なわれるPSA方式よりも相対的に低騒音、低発熱および耐久性に優れたVPSAやVSA方式を用いて、高生産および工程の単純化を実現することを目的とする。
生産端部を通過する生産気体を一方向に流し出すチェック弁と;前記チェック弁を通過した生産気体を吸入して目的空間に噴射する気体吐出機と;を含むことを特徴とする気体濃縮装置を提供する。
図3は本発明に係る工程を示す図式図である。本工程は標準4段階(ステップ)工程で構成され、Pl(P low)とPh(P high)は、吸着ベッド内でそれぞれ相対的に低い圧力および高い圧力を意味する。
Claims (9)
- 特定の気体に対して選択的な吸着特性を有する吸着剤に圧力差を加えて気体を分離する気体濃縮方法において、
第1吸着ベッドにおいて、その内部圧力を原料混合気体の圧力より低くして、混合気体を吸着ベッドの供給端部内に流入させ、吸着性の高い成分を優先的に吸着剤に吸着させ、第2吸着ベッドにおいて、その内部圧力を減少させて、吸着されていた成分を脱着させ、一方、前記第1吸着ベッドにおいて、より吸着性の低い成分を、第1吸着ベッドの生産端部を通して外部に排出して富化気体を生産し、前記富化気体の一部を、前記各吸着ベッドの生産端部間に連結された微細管を通して前記第2吸着ベッドの生産端部に供給する第1段階と;
前記第1吸着ベッドにおいて、その内部を供給端部から減圧し、吸着されていた成分を脱着させ、第2吸着ベッドにおいて、原料混合気体を供給して供給端部から加圧して吸着性の高い成分を吸着させ、この過程中に前記第1および第2吸着ベッドのそれぞれの生産端部から供給端部までの間には圧力勾配が存在していて、第1吸着ベッドの生産端部は第2吸着ベッドの生産端部より圧力が高くて、生産気体の一部が第1吸着ベッドの生産端部から第2吸着ベッドへ生産端部へ供給され、この過程中にも生産気体は連続的に生産され、第1吸着ベッドおよび第2吸着ベッドの生産端部から同時に富化ガスが生産される時期が存在する第2段階と;
第1吸着ベッドの生産端部と第2吸着ベッドの生産端部との圧力を前記第2段階と逆転して、第1段階と反対に、第1吸着ベッドでは脱着が行われ、第2吸着ベッドでは吸着が行われ、第2吸着ベッドの生産端部から生産される富化気体の一部が第1吸着ベッドの生産端部を通して供給されるとともに、第2吸着ベッドの生産端部から富化気体が生産される第3段階と;
前記第2段階と反対に、各吸着ベッド内の圧力勾配によって生産気体の一部が第2吸着ベッドの生産端部から第1吸着ベッドの生産端部へ供給され、第1吸着ベッドにおいて、原料混合気体の供給によって供給端部から加圧して吸着が行われ、第2吸着ベッドにおいて、供給端部から減圧して脱着が行われ、この過程中にも生産気体は連続的に生産され、第1吸着ベッドおよび第2吸着ベッドの生産端部から同時に生産される時期が存在する第4段階と;を含むことを特徴とする気体濃縮方法。 - 混合気体は空気であり、吸着性の高い成分は窒素で、吸着性の低い成分は酸素であることを特徴とする請求項1記載の気体濃縮方法。
- 吸着圧力は大気圧であり、脱着圧力は真空ポンプ手段によって決定される真空圧であることを特徴とする請求項1または2記載の気体濃縮方法。
- 特定の気体に対して選択的な吸着特性を有する吸着剤に圧力差を加えて気体を分離する気体濃縮装置において、
混合気体から不純物をろ過するフィルターと;
前記吸着剤を有する2つ以上の吸着ベッドと;
前記吸着ベッド内に真空圧を加える真空ポンプ手段と;
前記真空ポンプ手段による真空圧と混合気体の圧力とを交互に吸着ベッドに加えるように流路を切り換える弁手段と;
生産端部を通過する生産気体を一方向に流し出すチェック弁と;
各吸着ベッドの生産端部を連結する微細管であって、微細管の両端はそれぞれ各吸着ベッドの生産端部とその生産端部に連結するチェック弁の間に連結されている、微細管と; 前記チェック弁を通過した生産気体を吸入して目的空間に噴射する気体吐出機と;を含み、
前記チェック弁の開閉真空圧を極めて低く設定し、吸着ベッドの混合空気供給端部の弁を、前記フィルターおよび前記真空ポンプ手段へ単純に流路を切り換えることにより、請求項1記載の気体濃縮方法における第1段階および第4段階を具現することを特徴とする気体濃縮装置。 - 前記チェック弁と気体吐出機との間に調節手段を備え、吸着ベッドの生産端部から生産される生産気体の濃度および流量を調節することを特徴とする請求項4記載の気体濃縮装置。
- 前記気体吐出機とフィルターとの間に混合空気調節手段を備え、前記生産気体との混合量を調節することにより、最終生産気体の濃度および流量を調節することを特徴とする請求項5記載の気体濃縮装置。
- 前記真空ポンプ手段のモータに2つの真空ポンプヘッドを備えて前記真空ポンプ手段および前記気体吐出機をそれぞれ駆動することを特徴とする請求項4または5記載の気体濃縮装置。
- 前記チェック弁は真空ゲージ圧50mmHg以下の開閉真空圧を有し、前記気体吐出機は真空ゲージ圧200mmHg以下の吸入真空圧を有する真空ポンプ手段であることを特徴とする請求項4または5記載の気体濃縮装置。
- 前記弁手段は、モータによって駆動される流路付き回転板により流路が切り換えられる回転弁であることを特徴とする請求項4または5記載の気体濃縮装置。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0010178A KR100530675B1 (ko) | 2003-02-18 | 2003-02-18 | 기체농축기 |
KR10-2003-0010176A KR100476161B1 (ko) | 2003-02-18 | 2003-02-18 | 기체농축기 |
KR20030028407A KR100500403B1 (ko) | 2003-05-03 | 2003-05-03 | 기체농축방법 |
KR1020030029102A KR101012686B1 (ko) | 2003-05-07 | 2003-05-07 | 기체농축 방법 |
KR10-2003-0051275A KR100506554B1 (ko) | 2003-07-25 | 2003-07-25 | 기체농축방법 |
PCT/KR2004/000312 WO2004087300A1 (en) | 2003-02-18 | 2004-02-16 | Gas concentration method and its apparatus |
Publications (3)
Publication Number | Publication Date |
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JP2008500890A JP2008500890A (ja) | 2008-01-17 |
JP2008500890A5 JP2008500890A5 (ja) | 2008-02-28 |
JP4301452B2 true JP4301452B2 (ja) | 2009-07-22 |
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JP2004566469A Expired - Lifetime JP4301452B2 (ja) | 2003-02-18 | 2004-02-16 | 気体濃縮方法およびその装置 |
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Country | Link |
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US (1) | US7105038B2 (ja) |
JP (1) | JP4301452B2 (ja) |
WO (1) | WO2004087300A1 (ja) |
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2004
- 2004-02-16 JP JP2004566469A patent/JP4301452B2/ja not_active Expired - Lifetime
- 2004-02-16 US US10/497,320 patent/US7105038B2/en not_active Expired - Fee Related
- 2004-02-16 WO PCT/KR2004/000312 patent/WO2004087300A1/en active Application Filing
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US7105038B2 (en) | 2006-09-12 |
US20050081713A1 (en) | 2005-04-21 |
WO2004087300A1 (en) | 2004-10-14 |
JP2008500890A (ja) | 2008-01-17 |
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