ES8800112A1 - Procedimiento de produccion de nitrogeno a una presion llamada alta presion - Google Patents

Procedimiento de produccion de nitrogeno a una presion llamada alta presion

Info

Publication number
ES8800112A1
ES8800112A1 ES552844A ES552844A ES8800112A1 ES 8800112 A1 ES8800112 A1 ES 8800112A1 ES 552844 A ES552844 A ES 552844A ES 552844 A ES552844 A ES 552844A ES 8800112 A1 ES8800112 A1 ES 8800112A1
Authority
ES
Spain
Prior art keywords
installation
under pressure
column
nitrogen under
producing nitrogen
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.)
Expired
Application number
ES552844A
Other languages
English (en)
Other versions
ES552844A0 (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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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=9317050&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8800112(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of ES552844A0 publication Critical patent/ES552844A0/es
Publication of ES8800112A1 publication Critical patent/ES8800112A1/es
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes 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
    • F25J3/04Processes 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
    • F25J3/04248Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04254Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes 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
    • F25J3/04Processes 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
    • F25J3/04248Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284Generation 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes 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
    • F25J3/04Processes 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
    • F25J3/04248Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284Generation 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
    • F25J3/04321Generation 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 oxygen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes 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
    • F25J3/04Processes 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
    • F25J3/04406Processes 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
    • F25J3/04412Processes 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 in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00Processes or apparatus using separation by rectification
    • F25J2200/20Processes 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00Processes or apparatus using separation by rectification
    • F25J2200/50Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
    • F25J2200/54Processes 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00Processes characterised by the type or other details of the feed stream
    • F25J2210/42Nitrogen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/42Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being nitrogen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00Processes or apparatus involving steps for recycling of process streams
    • F25J2245/42Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen
    • 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00Refrigeration
    • Y10S62/912External refrigeration system
    • Y10S62/913Liquified gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Catalysts (AREA)

Abstract

PROCEDIMIENTO PARA PRODUCIR NITROGENO A PRESION POR DESTILACION. COMPRENDE: A) INTRODUCIR PARTE DEL AIRE COMPRIMIDO A UNA PRESION PROXIMA A LA ALTA PRESION Y ENFRIADO EN EL PUNTO DE CONDENSACION, EN LA COLUMNA PRINCIPAL DE DESTILACION; B) EXPANDIR AL LIQUIDO ENRIQUECIDO Y RECOGIDO EN LA CUBA DE LA COLUMNA DE DESTILACION A UNA PRESION INTERMEDIA ENTRE LA ALTA PRESION Y LA PRESION ATMOSFERICA; C) INTRODUCIR AL LIQUIDO ENRIQUECIDO EN UN EMPLAZAMIENTO DE LA COLUMNA DE DESTILACION AUXILIAR; D) ENFRIAR DICHO LIQUIDO EN UN CONDENSADOR DE CABEZA DE COLUMNA PRINCIPAL MEDIANTE EL LIQUIDO DE LA CUBA DE COLUMNA AUXILIAR; E) EXPANDIR UNA PARTE DEL LIQUIDO A UNA PRESION BAJA, PARA ENFRIAR UN CONDENSADOR DE CABEZA DE COLUMNA AUXILIAR; F) TRASEGAR EL LIQUIDO EN LA CABEZA DE LA COLUMNA PRINCIPAL; G) BOMBEAR EL LIQUIDO HASTA ALTA PRESION; H) INYECTAR EL LIQUIDO DE LA COLUMNA PRINCIPAL; E I) TRASEGAR EL NITROGENO EN LA CABEZA DE LA COLUMNA PRINCIPAL.
ES552844A 1985-03-11 1986-03-10 Procedimiento de produccion de nitrogeno a una presion llamada alta presion Expired ES8800112A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8503515A FR2578532B1 (fr) 1985-03-11 1985-03-11 Procede et installation de production d'azote

Publications (2)

Publication Number Publication Date
ES552844A0 ES552844A0 (es) 1987-11-01
ES8800112A1 true ES8800112A1 (es) 1987-11-01

Family

ID=9317050

Family Applications (1)

Application Number Title Priority Date Filing Date
ES552844A Expired ES8800112A1 (es) 1985-03-11 1986-03-10 Procedimiento de produccion de nitrogeno a una presion llamada alta presion

Country Status (11)

Country Link
US (1) US4717410A (es)
JP (1) JPH0731003B2 (es)
AU (1) AU584174B2 (es)
BE (1) BE904366A (es)
CA (1) CA1298777C (es)
DE (1) DE3606967C2 (es)
ES (1) ES8800112A1 (es)
FR (1) FR2578532B1 (es)
IT (1) IT1191980B (es)
NL (1) NL8600582A (es)
NO (1) NO167167C (es)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4957524A (en) * 1989-05-15 1990-09-18 Union Carbide Corporation Air separation process with improved reboiler liquid cleaning circuit
US5058387A (en) * 1989-07-05 1991-10-22 The Boc Group, Inc. Process to ultrapurify liquid nitrogen imported as back-up for nitrogen generating plants
FR2665755B1 (fr) * 1990-08-07 1993-06-18 Air Liquide Appareil de production d'azote.
US5098457A (en) * 1991-01-22 1992-03-24 Union Carbide Industrial Gases Technology Corporation Method and apparatus for producing elevated pressure nitrogen
US5197296A (en) * 1992-01-21 1993-03-30 Praxair Technology, Inc. Cryogenic rectification system for producing elevated pressure product
FR2699992B1 (fr) * 1992-12-30 1995-02-10 Air Liquide Procédé et installation de production d'oxygène gazeux sous pression.
US5303556A (en) * 1993-01-21 1994-04-19 Praxair Technology, Inc. Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
US5355682A (en) * 1993-09-15 1994-10-18 Air Products And Chemicals, Inc. Cryogenic air separation process producing elevated pressure nitrogen by pumped liquid nitrogen
US5355681A (en) * 1993-09-23 1994-10-18 Air Products And Chemicals, Inc. Air separation schemes for oxygen and nitrogen coproduction as gas and/or liquid products
US5402647A (en) * 1994-03-25 1995-04-04 Praxair Technology, Inc. Cryogenic rectification system for producing elevated pressure nitrogen
US5678425A (en) * 1996-06-07 1997-10-21 Air Products And Chemicals, Inc. Method and apparatus for producing liquid products from air in various proportions
US5682762A (en) * 1996-10-01 1997-11-04 Air Products And Chemicals, Inc. Process to produce high pressure nitrogen using a high pressure column and one or more lower pressure columns
DE19735154A1 (de) 1996-10-30 1998-05-07 Linde Ag Verfahren und Vorrichtung zur Gewinnung von Druckstickstoff
US5740683A (en) * 1997-03-27 1998-04-21 Praxair Technology, Inc. Cryogenic rectification regenerator system
US5934104A (en) * 1998-06-02 1999-08-10 Air Products And Chemicals, Inc. Multiple column nitrogen generators with oxygen coproduction
DE19902255A1 (de) * 1999-01-21 2000-07-27 Linde Tech Gase Gmbh Verfahren und Vorrichtung zur Gewinnung von Druckstickstoff
US6330812B2 (en) 2000-03-02 2001-12-18 Robert Anthony Mostello Method and apparatus for producing nitrogen from air by cryogenic distillation
GB0119500D0 (en) * 2001-08-09 2001-10-03 Boc Group Inc Nitrogen generation
EP1300640A1 (de) * 2001-10-04 2003-04-09 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Gewinnung von hoch reinem Stickstoff durch Tieftemperaturzerlegung von Luft
US6494060B1 (en) 2001-12-04 2002-12-17 Praxair Technology, Inc. Cryogenic rectification system for producing high purity nitrogen using high pressure turboexpansion
US6499312B1 (en) 2001-12-04 2002-12-31 Praxair Technology, Inc. Cryogenic rectification system for producing high purity nitrogen
US6568208B1 (en) * 2002-05-03 2003-05-27 Air Products And Chemicals, Inc. System and method for introducing low pressure reflux to a high pressure column without a pump
US8991209B2 (en) 2010-12-13 2015-03-31 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for producing high-pressure nitrogen
US9097459B2 (en) 2011-08-17 2015-08-04 Air Liquide Process & Construction, Inc. Production of high-pressure gaseous nitrogen
CA3063409A1 (en) 2017-05-16 2018-11-22 Terrence J. Ebert Apparatus and process for liquefying gases

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL72599C (es) * 1949-04-23
DE1117616B (de) * 1960-10-14 1961-11-23 Linde Eismasch Ag Verfahren und Einrichtung zum Gewinnen besonders reiner Zerlegungsprodukte in Tieftemperaturgaszerlegungsanlagen
DE1136355B (de) * 1961-01-26 1962-09-13 Linde S Eismaschinen Ag Zweign Verfahren und Einrichtung zur Tieftemperaturrektifikation von Gasgemischen
GB1052146A (es) * 1965-02-26 1966-12-21
DE1501722A1 (de) * 1966-01-13 1969-06-26 Linde Ag Verfahren zur Tieftemperatur-Luftzerlegung zur Erzeugung von hochverdichtetem gasfoermigem und/oder fluessigem Sauerstoff
US3760596A (en) * 1968-10-23 1973-09-25 M Lemberg Method of liberation of pure nitrogen and oxygen from air
DE2402246A1 (de) * 1974-01-18 1975-07-31 Linde Ag Verfahren zur gewinnung von sauerstoff mittlerer reinheit
DE3016317A1 (de) * 1980-04-28 1981-10-29 Messer Griesheim Gmbh, 6000 Frankfurt Verfahren zur gewinnung von fluessigen stickstoff
US4420317A (en) * 1981-10-29 1983-12-13 Nelson Stewart Process for recovering vaporized solvent which eliminates heat exchangers
US4453957A (en) * 1982-12-02 1984-06-12 Union Carbide Corporation Double column multiple condenser-reboiler high pressure nitrogen process
US4464188A (en) * 1983-09-27 1984-08-07 Air Products And Chemicals, Inc. Process and apparatus for the separation of air
US4543115A (en) * 1984-02-21 1985-09-24 Air Products And Chemicals, Inc. Dual feed air pressure nitrogen generator cycle
US4556404A (en) * 1984-09-19 1985-12-03 Air Products And Chemicals, Inc. Split-column extractive distillation

Also Published As

Publication number Publication date
IT8619622A1 (it) 1987-09-04
US4717410A (en) 1988-01-05
AU5440686A (en) 1986-09-18
NO167167B (no) 1991-07-01
AU584174B2 (en) 1989-05-18
ES552844A0 (es) 1987-11-01
NO167167C (no) 1991-10-09
NO860874L (no) 1986-09-12
FR2578532B1 (fr) 1990-05-04
DE3606967A1 (de) 1986-09-11
IT1191980B (it) 1988-03-31
CA1298777C (fr) 1992-04-14
JPH0731003B2 (ja) 1995-04-10
FR2578532A1 (fr) 1986-09-12
DE3606967C2 (de) 2000-08-10
JPS61252474A (ja) 1986-11-10
NL8600582A (nl) 1986-10-01
BE904366A (fr) 1986-09-08
IT8619622A0 (it) 1986-03-04

Similar Documents

Publication Publication Date Title
ES8800112A1 (es) Procedimiento de produccion de nitrogeno a una presion llamada alta presion
UA19155A (uk) Спосіб hизькотемпературhого розділеhhя повітря та устаhовка для його реалізації
SE8405300L (sv) Utvinning av vete
ES288385U (es) Soporte de exposicion
DE3751506D1 (de) Verbinden von polikristallinen Diamantformkörpern bei niedrigem Druck.
GB1533145A (en) Method and apparatus with a single rectifying column for air fractionation
GB1371327A (en) Air separation
CA2028252A1 (en) High pressure nitrogen production cryogenic process
EP0206820A3 (en) Diamond synthesis
EP0149322A3 (en) Method and apparatus for reducing varactor noise
AU3908485A (en) Obtaining solutions having dissolved gas
SE9303605D0 (sv) Polycrystalline BCN substance and method of producing same
ES8700652A1 (es) Un metodo de preparar n-4-(3-aminopropil)-aminobutil-2,2-di-hidroxietanoamida
IT1271056B (it) Processo per la preparazione di espansi a base di copolineri etilene-clorotrifluoroetilene
JPS5232879A (en) Entropy expansion method of gases
JPS5234991A (en) Method of producing distilled liquor
FR2270928A1 (en) Gas mixt. fractioning of adsorption type - uses pressurising and expanding phases in several adsorption zones followed by equalising zone
GB1402349A (en) Purification process for gn-rh
ATE34169T1 (de) Verfahren zur herstellung von methyl-nmethylanthranilat.
JPS52101506A (en) Rail
GB1295022A (es)
BR9803249A (pt) Processo e aparelho para produzir nitrogênio.
SU801165A1 (ru) Способ инициировани электрическогоРАзР дА B жидКОСТи
KR860004013A (ko) 4-{[(2-히드록시-5-플로로-페닐)(4-클로로-페닐)메틸렌]아미노}-부탄아미드의 제조방법
JPS5352682A (en) Purification of l-methionase

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20060912