ES507688A0 - Procedimiento de absorcion para descomponer por lo menos dos corrientes de gas crudo . - Google Patents

Procedimiento de absorcion para descomponer por lo menos dos corrientes de gas crudo .

Info

Publication number
ES507688A0
ES507688A0 ES507688A ES507688A ES507688A0 ES 507688 A0 ES507688 A0 ES 507688A0 ES 507688 A ES507688 A ES 507688A ES 507688 A ES507688 A ES 507688A ES 507688 A0 ES507688 A0 ES 507688A0
Authority
ES
Spain
Prior art keywords
decompose
gas streams
raw gas
absorption procedure
absorption
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.)
Granted
Application number
ES507688A
Other languages
English (en)
Other versions
ES8300304A1 (es
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.)
Linde GmbH
Original Assignee
Linde GmbH
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
Priority claimed from DE19803046267 external-priority patent/DE3046267A1/de
Priority claimed from DE19803046268 external-priority patent/DE3046268A1/de
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of ES8300304A1 publication Critical patent/ES8300304A1/es
Publication of ES507688A0 publication Critical patent/ES507688A0/es
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/56Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • B01D53/04Separation 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
    • B01D53/047Pressure swing adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/16Hydrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/10Single element gases other than halogens
    • B01D2257/102Nitrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/502Carbon monoxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702Hydrocarbons
    • B01D2257/7022Aliphatic hydrocarbons
    • B01D2257/7025Methane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40011Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40028Depressurization
    • B01D2259/4003Depressurization with two sub-steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40011Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40035Equalization
    • B01D2259/40041Equalization with more than three sub-steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40011Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40043Purging
    • B01D2259/4005Nature of purge gas
    • B01D2259/40052Recycled product or process gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40011Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40058Number of sequence steps, including sub-steps, per cycle
    • B01D2259/40075More than ten
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/406Further details for adsorption processes and devices using more than four beds
    • B01D2259/4061Further details for adsorption processes and devices using more than four beds using five beds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/406Further details for adsorption processes and devices using more than four beds
    • B01D2259/4067Further details for adsorption processes and devices using more than four beds using ten beds
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/042Purification by adsorption on solids
    • C01B2203/043Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465Composition of the impurity
    • C01B2203/047Composition of the impurity the impurity being carbon monoxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465Composition of the impurity
    • C01B2203/0475Composition of the impurity the impurity being carbon dioxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465Composition of the impurity
    • C01B2203/048Composition of the impurity the impurity being an organic compound
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/20Capture or disposal of greenhouse gases of methane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/151Reduction of greenhouse gas [GHG] emissions, e.g. CO2
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/151Reduction of greenhouse gas [GHG] emissions, e.g. CO2
    • Y02P20/156Methane [CH4]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Gases By Adsorption (AREA)
ES507688A 1980-12-09 1981-12-03 Procedimiento de absorcion para descomponer por lo menos dos corrientes de gas crudo . Granted ES507688A0 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803046267 DE3046267A1 (de) 1980-12-09 1980-12-09 Adsorptionsverfahren
DE19803046268 DE3046268A1 (de) 1980-12-09 1980-12-09 Verfahren und vorrichtung zur gewinnung von wasserstoff

Publications (2)

Publication Number Publication Date
ES8300304A1 ES8300304A1 (es) 1982-11-01
ES507688A0 true ES507688A0 (es) 1982-11-01

Family

ID=25789600

Family Applications (1)

Application Number Title Priority Date Filing Date
ES507688A Granted ES507688A0 (es) 1980-12-09 1981-12-03 Procedimiento de absorcion para descomponer por lo menos dos corrientes de gas crudo .

Country Status (5)

Country Link
US (1) US4402712A (es)
EP (1) EP0053837B1 (es)
DE (1) DE3165286D1 (es)
ES (1) ES507688A0 (es)
MX (1) MX159561A (es)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132758A1 (de) * 1981-08-19 1983-03-03 Linde Ag, 6200 Wiesbaden Absorptionsverfahren
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
DE3244304A1 (de) * 1982-11-30 1984-05-30 Linde Ag, 6200 Wiesbaden Verfahren zur adsorptiven reinigung von rohgasen
US4436533A (en) 1982-12-02 1984-03-13 Shell Oil Company Adsorption process
JPS607920A (ja) * 1983-06-29 1985-01-16 Hitachi Ltd 非凝縮性混合ガスの分離方法
DE3439487A1 (de) * 1984-10-27 1986-06-26 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Energieguenstiges verfahren zur erzeugung von synthesegas mit einem hohen methangehalt
US5051115A (en) * 1986-05-21 1991-09-24 Linde Aktiengesellschaft Pressure swing adsorption process
GB8629031D0 (en) * 1986-12-04 1987-01-14 Shell Int Research Producing hydrogen
FR2647431B1 (fr) * 1989-05-24 1991-08-16 Air Liquide Procede et installation de production d'oxygene gazeux sous haute pression
JP2981302B2 (ja) * 1991-05-13 1999-11-22 東洋エンジニアリング株式会社 ガスの分離方法
JP2981304B2 (ja) * 1991-05-13 1999-11-22 東洋エンジニアリング株式会社 ガス分離方法
US5294247A (en) * 1993-02-26 1994-03-15 Air Products And Chemicals, Inc. Adsorption process to recover hydrogen from low pressure feeds
US5571309A (en) * 1995-07-28 1996-11-05 The Boc Group, Inc. Adsorption process
US5656065A (en) * 1995-10-04 1997-08-12 Air Products And Chemicals, Inc. Multibed pressure swing adsorption apparatus and method for the operation thereof
US6210466B1 (en) * 1999-08-10 2001-04-03 Uop Llc Very large-scale pressure swing adsorption processes
NL1013314C2 (nl) * 1999-10-16 2001-04-18 Esselink B V Drukwisseladsorptiewerkwijze.
US6379431B1 (en) * 2000-01-20 2002-04-30 Air Products And Chemicals, Inc. Pressure swing adsorption process with multiple beds on purge and/or with ten beds and four pressure equalization steps
US6565628B2 (en) 2001-07-23 2003-05-20 Air Products And Chemicals, Inc. Pressure swing adsorption process with reduced pressure equalization time
JP4224240B2 (ja) * 2002-02-07 2009-02-12 株式会社荏原製作所 液体燃料合成システム
GB0216914D0 (en) * 2002-07-19 2002-08-28 Air Prod & Chem Process and apparatus for treating a feed gas
US6699307B1 (en) * 2002-10-11 2004-03-02 H2Gen Innovations, Inc. High recovery PSA cycles and apparatus with reduced complexity
US6918953B2 (en) * 2003-07-09 2005-07-19 H2Gen Innovations, Inc. Modular pressure swing adsorption process and apparatus
US7399342B2 (en) 2004-12-22 2008-07-15 Idatech, Llc Systems and methods for regulating heating assembly operation through pressure swing adsorption purge control
FR2889459B1 (fr) * 2005-08-08 2007-09-14 Air Liquide Procede de separation dans une unite psa d'au moins un melange gazeux
US7837765B2 (en) 2007-12-12 2010-11-23 Idatech, Llc Systems and methods for supplying auxiliary fuel streams during intermittent byproduct discharge from pressure swing adsorption assemblies
US8070841B2 (en) * 2007-12-12 2011-12-06 Idatech, Llc Systems and methods for supplying auxiliary fuel streams during intermittent byproduct discharge from pressure swing adsorption assemblies
US8491704B2 (en) * 2011-01-11 2013-07-23 Praxair Technology, Inc. Six bed pressure swing adsorption process operating in normal and turndown modes
US8496733B2 (en) * 2011-01-11 2013-07-30 Praxair Technology, Inc. Large scale pressure swing adsorption systems having process cycles operating in normal and turndown modes
US8435328B2 (en) * 2011-01-11 2013-05-07 Praxair Technology, Inc. Ten bed pressure swing adsorption process operating in normal and turndown modes
US8551217B2 (en) * 2011-01-11 2013-10-08 Praxair Technology, Inc. Six bed pressure swing adsorption process operating in normal and turndown modes
AU2012330384B2 (en) 2011-10-25 2016-04-14 Shell Internationale Research Maatschappij B.V. Method for processing Fischer-Tropsch off-gas
EP2612825B1 (en) * 2012-01-04 2017-11-01 Noxell Corporation Hair colorant container in the form of a flexible sachet
US10632414B2 (en) * 2018-01-25 2020-04-28 Uop Llc Integration of pressure swing adsorption and hydroprocessing for improved hydrogen utilization
EP3828132A1 (de) 2019-11-26 2021-06-02 L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude Verfahren und anlage zum herstellen von reinwasserstoff

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790505A (en) * 1954-08-02 1957-04-30 United Gas Corp Methods of and means for dehydrating and processing fluid streams
US2995208A (en) * 1958-08-15 1961-08-08 Phillips Petroleum Co Adsorption process and apparatus
US3205639A (en) * 1963-08-05 1965-09-14 Pritchard & Co J F Adsorption apparatus and method for drying gas streams having differential pressure control mechanism for vessels on adsorbing and desorbing cycles
US3986849A (en) * 1975-11-07 1976-10-19 Union Carbide Corporation Selective adsorption process
DE2604305A1 (de) * 1976-02-04 1977-08-11 Linde Ag Verfahren zum zerlegen von gasgemischen
JPS5299973A (en) * 1976-02-18 1977-08-22 Toray Ind Inc Adsorption and separation apparatus of mixed gas
US4153434A (en) * 1976-04-07 1979-05-08 General Cable Corporation Emergency standby air drying back-up system
DE2624346A1 (de) * 1976-05-31 1977-12-15 Linde Ag Verfahren zur zerlegung von gasen durch adsorption
US4077780A (en) * 1976-10-20 1978-03-07 Union Carbide Corporation Recovery of hydrogen and nitrogen from ammonia plant purge gas
DE2823211A1 (de) * 1978-05-27 1979-12-06 Bayer Antwerpen Nv Verfahren zum betrieb einer druck- wechsel-adsorptionsanlage
US4171206A (en) * 1978-08-21 1979-10-16 Air Products And Chemicals, Inc. Separation of multicomponent gas mixtures
US4171207A (en) * 1978-08-21 1979-10-16 Air Products And Chemicals, Inc. Separation of multicomponent gas mixtures by pressure swing adsorption
DE2854060A1 (de) * 1978-12-14 1980-07-03 Linde Ag Verfahren zum bereitstellen eines einsatzgases fuer eine chemische reaktion und zum abtrennen eines gasfoermigen reaktionsproduktes
DE2911669A1 (de) * 1979-03-24 1980-10-02 Linde Ag Verfahren zur erzeugung von wasserstoff
NL7905561A (nl) * 1979-07-17 1981-01-20 Essex Bv Ing Buero Werkwijze en inrichting voor het scheiden van gasvor- mige componenten door selectieve adsorptie.

Also Published As

Publication number Publication date
MX159561A (es) 1989-07-06
ES8300304A1 (es) 1982-11-01
EP0053837B1 (de) 1984-08-01
EP0053837A1 (de) 1982-06-16
US4402712A (en) 1983-09-06
DE3165286D1 (en) 1984-09-06

Similar Documents

Publication Publication Date Title
ES507688A0 (es) Procedimiento de absorcion para descomponer por lo menos dos corrientes de gas crudo .
BR8305068A (pt) Processo para a obtencao de um w-fluoro alcenol, composicao cupincida, processo para combater cupins
JPS54113585A (en) Track saw
ES520857A0 (es) Procedimiento para la produccion de eteres alquilterbutilicos en presencia de butadieno.
BR8104188A (pt) Processo para a preparacao de gases reacionais
AR230995A1 (es) Procedimiento para producir n-fosfono-metilglicina
IT8020915A0 (it) Procedimento per depurare acetonitrile grezzo.
BR8104564A (pt) Processo de preparacao de catalisador
BR7804626A (pt) Processo para reducao do teor de unidade de concentrados minerais
BR8103797A (pt) Processo de gaseificacao
BR8101272A (pt) Fecho para fixar ferramentas de pocp
ES519084A0 (es) Procedimiento para excluir de compuestos glicidilicos los vestigios de epiclorhidrina.
IT8023163A0 (it) Processo per la preparazione dicomposti organici carbossilati.
BR7806147A (pt) Processo para a deposicao,sem perigos,de materiais perigosos a saude,especialmente radioativos
BR7801867A (pt) Processo para preparacao de 1-azolil-3,3-dimetil-1 fenoxi-butano-2-onas
MX7042E (es) Proceso para producir 3-amidino-benzisotiazol-1,1 bioxidos
BR8104415A (pt) Processo para a preparacao de n-fosfonil-carbonil-carbamatos ,composicoes pesticidas para preparar composicoes pesticidas
NO159623C (no) Fremgangsm te foling.
ES518959A0 (es) Procedimiento para preparar fenilureas.
IT8323628A0 (it) Torre corazzata.
ES507909A0 (es) Procedimiento para preparar compuestos macrociclicos sustituidos.
IT7928160A0 (it) Dispositivo di assorbimento per la depurazione di gas.
ES522046A0 (es) Procedimiento para preparar ureasssustituidas.
BR8107184A (pt) Processo para a preparacao de misturas de poliois contendo anidrohexita e misturas de poliois obteniveis conforme o mesmo
AR230044A1 (es) Procedimiento de desnitracion para preparar n-alquil-2,6-dintro-3,4-dialquil anilinas

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001