KR960004207A - 흡착에 의해 기체 혼합물로부터 질소를 분리하는 방법 - Google Patents

흡착에 의해 기체 혼합물로부터 질소를 분리하는 방법 Download PDF

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KR960004207A
KR960004207A KR1019950020713A KR19950020713A KR960004207A KR 960004207 A KR960004207 A KR 960004207A KR 1019950020713 A KR1019950020713 A KR 1019950020713A KR 19950020713 A KR19950020713 A KR 19950020713A KR 960004207 A KR960004207 A KR 960004207A
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nitrogen
zeolite
lithium
adsorbent
gas mixture
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KR1019950020713A
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English (en)
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비고 크자비에르
쁘티 피에르
피에르쁘티
사르당 베르나르
Original Assignee
띠에리 쉬에르
레르 리뀌드, 소시에떼 아노님 뿌르 레뛰드 에 렉스쁠로와따시옹 데 프로세데 죠르쥬 끌로드
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Application filed by 띠에리 쉬에르, 레르 리뀌드, 소시에떼 아노님 뿌르 레뛰드 에 렉스쁠로와따시옹 데 프로세데 죠르쥬 끌로드 filed Critical 띠에리 쉬에르
Publication of KR960004207A publication Critical patent/KR960004207A/ko

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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
    • 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
    • B01D53/06—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 moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B01D2253/1085—Zeolites characterized by a silicon-aluminium ratio
    • 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
    • B01D2256/10—Nitrogen
    • 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
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
    • B01D2259/4006—Less than four
    • 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
    • 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
    • Y10S95/00—Gas separation: processes
    • Y10S95/90—Solid sorbent
    • Y10S95/902—Molecular sieve

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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)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

본 발명은 고압에서 수행되는 1 이상의 질소 흡착단계 및 저압에서 수행되는 이상의 질소 탈착단계를 포함하며, 순환식 압력 변화에 흡착제 내에서 질소를 함유하는 기체혼합물로부터 질소를 선택적으로 흡착하여 질소를 분리하는 PSA 방법에 있어서, 상기 흡착제는 회전식 흡착기내에 배열되고, 흡착제의 50% 이상이 리튬으로 50% 이상 교환된 제올라이트로 이루어지는 것을 특징으로 하는 질소의 선택적 흡착에 의해 기체 혼합물로부터 질소를 분리하는 방법에 관한 것이다.

Description

흡착에 의해 기체 혼합물로부터 질소를 분리하는 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (9)

  1. 고압에서 수행되는 1 이상의 질소 흡착단계 및 저압에서 수행되는 1이상의 질소 탈착단계를 포함하여, 순환식 압력 변화에 의해 흡착제 내에서 질소를 함유하는 기체혼합물로부터 질소를 선택적으로 흡착하여 질소를 분리하는 PSA 방법에 있어서, 상기 흡착제를 회전식 흡착기내에 배열되고, 흡착제의 50%이상이 리튬으로 50% 이상 교환된 제올라이트로 이루어지는 것을 특징으로 하는 질소의 선택적 흡착에 의해 기체 혼합물로부터 질소를 분리하는 방법.
  2. 제1항에 있어서, 상기 제올라이트는 Si/A1의 몰비가 1 내지 10, 바람직하게는 1 내지 5인 합성 또는 천연의 포우저사이트인 것을 특징으로 하는 방법.
  3. 제1항 또는 2항에 있어서, 상기 제올라이트는 Si/A1의 몰비가 1 내지 1.5, 바람직하게는 1 내지 1.25인 것을 특징으로 하는 방법.
  4. 제1항 내지 제3항중 어느 한 항에 있어서, 상기 제올라이트는 70% 이상, 바람직하게는 80% 이상, 더욱 바람직하게는 85% 이상이, 리튬으로 교환된 것을 특징으로 하는 방법.
  5. 제1항 내지 제4항중 어느 한 항에 있어서, 상기 제올라이트는 Si/A1의 몰비가 1 내지 1.5인 제올라이트 X이며, 80% 이상, 바람직하게는 95% 이상이 리튬으로 교환된 것을 특징으로 하는 방법.
  6. 제1항 내지 제3항중 어느 한 항에 있어서, 상기 제올라이트는 50 내지 95%의 양이 리튬에 의해, 그리고 5 내지 50%의 양이 칼슘, 마그네슘, 바륨, 스트론튬, 코발트, 구리, 크롬, 철, 망간, 니켈 및 아연으로 이루어진 군으로부터 선택되는 2가 양이온에 의해 교환된 것을 특징으로 하는 방법.
  7. 제1항 내지 제6항중 어느 한 항에 있어서, 흡착제 분량의 100%가 리튬으로 교환된 제올라이트로 이루어지는 것을 특징으로 하는 방법.
  8. 제1항 내지 제7항중 어느 한 항에 있어서, 고압은 90 내지 300KPa, 바람직하게는 100 내지 150KPa이며, 저압은 10 내지 70KPa, 바람직하게는 25 내지 40KPa인 것을 특징으로 하는 방법.
  9. 제1항 내지 제8항중 어느 한 항에 있어서, 질소를 함유하는 기체 혼합물은 공기이고, 질소는 공기중의 산소와 분리시키는 것을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950020713A 1994-07-18 1995-07-14 흡착에 의해 기체 혼합물로부터 질소를 분리하는 방법 KR960004207A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9408822 1994-07-18
FR9408822A FR2722426B1 (fr) 1994-07-18 1994-07-18 Procede de separation d'azote d'un melange gazeux par adsorption

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KR960004207A true KR960004207A (ko) 1996-02-23

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Country Link
US (1) US5658370A (ko)
EP (1) EP0693309B1 (ko)
JP (1) JPH08196850A (ko)
KR (1) KR960004207A (ko)
CN (1) CN1127153A (ko)
BR (1) BR9503350A (ko)
DE (1) DE69511800T2 (ko)
ES (1) ES2138167T3 (ko)
FI (1) FI953455A (ko)
FR (1) FR2722426B1 (ko)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38493E1 (en) * 1996-04-24 2004-04-13 Questair Technologies Inc. Flow regulated pressure swing adsorption system
FR2749004B1 (fr) * 1996-05-24 1998-07-10 Air Liquide Procede pour la purification de melanges gazeux a base d'hydrogene utilisant une zeolithe x echangee au lithium
US5868818A (en) * 1996-08-08 1999-02-09 Tosoh Corporation Adsorbent for air separation, production method thereof, and air-separation method using it
FR2753108B1 (fr) * 1996-09-06 1998-10-16 Air Liquide Procede pour la separation de melanges gazeux contenant de l'oxygene et de l'azote
DE19647290A1 (de) * 1996-11-15 1998-05-28 Bayer Ag Verfahren zur Herstellung eines mit Lithium-Ionen ausgetauschten, bindemittelfreien Zeolithgranulats und dessen Verwendung zur adsorptiven Lufttrennung
FR2765491B1 (fr) * 1997-07-07 1999-08-06 Air Liquide Procede de separation d'un flux gazeux par un procede psa
FR2766476B1 (fr) * 1997-07-22 1999-09-03 Ceca Sa Adsorbant zeolitique ameliore pour la separation des gaz de l'air et son procede d'obtention
FR2766384B1 (fr) * 1997-07-25 1999-09-03 Air Liquide Regulation d'un procede psa
FR2771656B1 (fr) * 1997-12-01 2000-01-07 Air Liquide Procede psa mettant en oeuvre un adsorbant a proprietes de capacite et/ou de selectivite heterogenes
FR2775618B1 (fr) * 1998-03-03 2000-05-05 Air Liquide Adsorbant a taux d'echange heterogene et procede psa mettant en oeuvre un tel adsorbant
FR2782460B1 (fr) * 1998-08-21 2000-09-22 Air Liquide Procede psa utilisant un adsorbant agglomere constitue d'une phase zeolitique et d'un liant
FR2782461B1 (fr) * 1998-08-21 2000-09-22 Air Liquide Procede psa utilisant une zeolithe faujasite contenant des cations metalliques en tant qu'adsorbant
FR2782507B1 (fr) * 1998-08-21 2000-09-29 Air Liquide Procede de fabrication de particules de zeolite x echangee par des cations metalliques
US6921597B2 (en) * 1998-09-14 2005-07-26 Questair Technologies Inc. Electrical current generation system
EP1005904A3 (en) * 1998-10-30 2000-06-14 The Boc Group, Inc. Adsorbents and adsorptive separation process
FR2792220B1 (fr) * 1999-04-19 2001-06-15 Air Liquide Procede psa mettant en oeuvre un adsorbant a resistance intrinseque favorable a la cinetique d'adsorption
EP1189677B1 (en) 1999-06-09 2005-03-30 Questair Technologies, Inc. Adsorption element
WO2000076629A1 (en) * 1999-06-10 2000-12-21 Questair Technologies Inc. Chemical reactor with pressure swing adsorption
FR2796570B1 (fr) * 1999-07-22 2002-06-07 Air Liquide Adsorbant a selectivite amelioree pour la separation des gaz
US6340382B1 (en) * 1999-08-13 2002-01-22 Mohamed Safdar Allie Baksh Pressure swing adsorption process for the production of hydrogen
US6514319B2 (en) 1999-12-09 2003-02-04 Questair Technologies Inc. Life support oxygen concentrator
US7250073B2 (en) * 1999-12-09 2007-07-31 Questair Technologies, Inc. Life support oxygen concentrator
CA2306311C (en) 2000-04-20 2007-04-10 Quest Air Gases Inc. Absorbent laminate structures
ES2640910T3 (es) 2000-10-27 2017-11-07 Air Products And Chemicals, Inc. Sistemas y procesos para proporcionar hidrógeno a células de combustible
US7097925B2 (en) * 2000-10-30 2006-08-29 Questair Technologies Inc. High temperature fuel cell power plant
CA2325072A1 (en) * 2000-10-30 2002-04-30 Questair Technologies Inc. Gas separation for molten carbonate fuel cell
US6824590B2 (en) * 2000-11-07 2004-11-30 Air Products And Chemicals, Inc. Use of lithium-containing fau in air separation processes including water and/or carbon dioxide removal
US6866950B2 (en) * 2000-12-08 2005-03-15 Questair Technologies Inc. Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source
CA2329475A1 (en) * 2000-12-11 2002-06-11 Andrea Gibbs Fast cycle psa with adsorbents sensitive to atmospheric humidity
JP2005519731A (ja) * 2002-03-14 2005-07-07 クエストエアー テクノロジーズ インコーポレイテッド 圧力スイング及び置換パージの組合せによるガス分離
ATE373323T1 (de) * 2002-03-14 2007-09-15 Questair Technologies Inc Wasserstoffrückführung für festoxid- brennstoffzellen
FR2839263B1 (fr) * 2002-05-03 2005-01-14 Air Liquide Systeme embarque de production d'oxygene pour aeronefs, en particulier aeronefs a long rayon d'action
US7285350B2 (en) 2002-09-27 2007-10-23 Questair Technologies Inc. Enhanced solid oxide fuel cell systems
WO2004076017A2 (en) * 2003-02-26 2004-09-10 Questair Technologies Inc. Hydrogen recycle for high temperature fuel cells
US7443803B2 (en) * 2004-03-23 2008-10-28 Fujitsu Limited Estimating and managing network traffic
US7189280B2 (en) * 2004-06-29 2007-03-13 Questair Technologies Inc. Adsorptive separation of gas streams
CA2585963A1 (en) 2004-11-05 2006-05-18 Questair Technologies Inc. Separation of carbon dioxide from other gases
US8388735B2 (en) * 2008-12-17 2013-03-05 Uop Llc Adsorbent media with Li exchanged zeolite
CN104874203B (zh) * 2015-05-28 2017-06-16 长春黄金研究院 沸石动态吸附柱
FR3087670B1 (fr) * 2018-10-26 2020-10-23 Air Liquide Procede de conditionnement d'un recipient comprenant un materiau granulaire
CN111498817B (zh) * 2020-04-23 2021-10-26 华北制药股份有限公司 氮气回收循环利用工艺及氮气回收循环利用***

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140933A (en) * 1960-12-02 1964-07-14 Union Carbide Corp Separation of an oxygen-nitrogen mixture
FR2534827A1 (fr) 1982-10-22 1984-04-27 Air Liquide Procede de traitement de gaz par adsorption comportant plusieurs adsorbeurs en phase de production simultanee
FR2579484B1 (fr) 1985-03-29 1987-06-05 Air Liquide Procede de traitement de gaz par adsorption
US4612022A (en) * 1985-06-21 1986-09-16 Progress Equities Incorporated Process for increasing the concentration of one component in a multi-component _gaseous mixture
US4812147A (en) * 1985-11-08 1989-03-14 Union Carbide Corporation Multicomponent adsorption process
FR2612083B1 (fr) 1987-03-11 1989-06-09 Air Liquide Procede de traitement par adsorption d'un melange gazeux
US4859217A (en) * 1987-06-30 1989-08-22 Uop Process for separating nitrogen from mixtures thereof with less polar substances
FR2624759B1 (fr) 1987-12-22 1990-05-04 Air Liquide Procede de traitement d'un melange gazeux par adsorption
US4810265A (en) * 1987-12-29 1989-03-07 Union Carbide Corporation Pressure swing adsorption process for gas separation
FR2633847B1 (fr) 1988-07-08 1991-04-19 Air Liquide Procede de traitement d'un melange gazeux par adsorption
US4925460A (en) * 1989-07-20 1990-05-15 Air Products And Chemicals, Inc. Chabazite for gas separation
US5174979A (en) * 1989-10-06 1992-12-29 Uop Mixed ion-exchanged zeolites and processes for the use thereof in gas separations
USRE35099E (en) * 1989-11-20 1995-11-28 Sequal Technologies, Inc. Fluid fractionator
ES2089202T3 (es) 1990-03-02 1996-10-01 Air Liquide Procedimiento de produccion de oxigeno mediante separacion de aire por adsorcion.
US5074892A (en) * 1990-05-30 1991-12-24 Union Carbide Industrial Gases Technology Corporation Air separation pressure swing adsorption process
FR2667801B1 (fr) * 1990-10-11 1992-12-04 Air Liquide Procede et equipement de separation par adsorption d'au moins un constituant d'un melange gazeux.
US5203887A (en) * 1991-12-11 1993-04-20 Praxair Technology, Inc. Adsorbent beds for pressure swing adsorption operations
US5152813A (en) * 1991-12-20 1992-10-06 Air Products And Chemicals, Inc. Nitrogen adsorption with a Ca and/or Sr exchanged lithium X-zeolite
FR2689785B1 (fr) * 1992-04-13 1994-05-20 Air Liquide Dispositif rotatif de separation par adsorption d'au moins un constituant d'un melange gazeux.
US5266102A (en) * 1992-09-23 1993-11-30 Air Products And Chemicals, Inc. O2 VSA process with low O2 capacity adsorbents
US5258060A (en) * 1992-09-23 1993-11-02 Air Products And Chemicals, Inc. Adsorptive separation using diluted adsorptive phase
US5258058A (en) * 1992-10-05 1993-11-02 Air Products And Chemicals, Inc. Nitrogen adsorption with a divalent cation exchanged lithium X-zeolite
US5268023A (en) * 1992-10-05 1993-12-07 Air Products And Chemicals, Inc. Nitrogen adsorption with highly Li exchanged X-zeolites with low Si/Al ratio
US5464467A (en) * 1994-02-14 1995-11-07 The Boc Group, Inc. Adsorptive separation of nitrogen from other gases

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Publication number Publication date
BR9503350A (pt) 1996-07-16
DE69511800D1 (de) 1999-10-07
FI953455A (fi) 1996-01-19
DE69511800T2 (de) 2000-04-13
EP0693309A1 (fr) 1996-01-24
FI953455A0 (fi) 1995-07-17
JPH08196850A (ja) 1996-08-06
ES2138167T3 (es) 2000-01-01
FR2722426A1 (fr) 1996-01-19
FR2722426B1 (fr) 1996-08-23
US5658370A (en) 1997-08-19
CN1127153A (zh) 1996-07-24
EP0693309B1 (fr) 1999-09-01

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