IT1211081B - Procedimento criogenico di rimozione di gas acidi da misceledi gas. - Google Patents

Procedimento criogenico di rimozione di gas acidi da misceledi gas.

Info

Publication number
IT1211081B
IT1211081B IT8123081A IT2308181A IT1211081B IT 1211081 B IT1211081 B IT 1211081B IT 8123081 A IT8123081 A IT 8123081A IT 2308181 A IT2308181 A IT 2308181A IT 1211081 B IT1211081 B IT 1211081B
Authority
IT
Italy
Prior art keywords
removal
gas mixtures
acid gases
cryogenic procedure
cryogenic
Prior art date
Application number
IT8123081A
Other languages
English (en)
Other versions
IT8123081A0 (it
Inventor
Luigi Gazzi
Giancarlo Cotone
Gianfranco Soldati
Alessandro Ginnasi
Alessandro Vetere
Carlo Rescalli
Original Assignee
Snam Progetti
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
Application filed by Snam Progetti filed Critical Snam Progetti
Publication of IT8123081A0 publication Critical patent/IT8123081A0/it
Priority to IT8123081A priority Critical patent/IT1211081B/it
Priority to US06/391,282 priority patent/US4514203A/en
Priority to NZ201064A priority patent/NZ201064A/en
Priority to GR68555A priority patent/GR76184B/el
Priority to NO82822145A priority patent/NO822145L/no
Priority to MT912A priority patent/MTP912B/xx
Priority to AU85567/82A priority patent/AU557319B2/en
Priority to BR8204065A priority patent/BR8204065A/pt
Priority to CA000407330A priority patent/CA1177381A/en
Priority to GB08220605A priority patent/GB2102696B/en
Priority to PL23751582A priority patent/PL237515A1/xx
Priority to RO108193A priority patent/RO85733B/ro
Priority to ES514718A priority patent/ES8402868A1/es
Priority to OA57749A priority patent/OA07157A/xx
Priority to IN843/CAL/82A priority patent/IN158235B/en
Priority to DK328682A priority patent/DK328682A/da
Priority to YU01604/82A priority patent/YU160482A/xx
Priority to DE19823227477 priority patent/DE3227477A1/de
Application granted granted Critical
Publication of IT1211081B publication Critical patent/IT1211081B/it

Links

Classifications

    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0233—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 characterised by the separated product stream separation of CnHm with 1 carbon atom or more
    • 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
    • B01D53/14—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 absorption
    • B01D53/1456—Removing acid components
    • B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
    • 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
    • B01D53/14—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 absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
    • 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
    • F25J3/0204—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 characterised by the feed stream
    • F25J3/0209—Natural gas or substitute natural gas
    • 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
    • F25J3/0204—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 characterised by the feed stream
    • F25J3/0223—H2/CO mixtures, i.e. synthesis gas; Water gas or shifted synthesis gas
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0266—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 characterised by the separated product stream separation of carbon dioxide
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0271—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 characterised by the separated product stream separation of H2/CO mixtures, i.e. of synthesis gas
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0415—Purification by absorption in liquids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/0475—Composition of the impurity the impurity being carbon dioxide
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/50—Processes or apparatus using other separation and/or other processing means using absorption, i.e. with selective solvents or lean oil, heavier CnHm and including generally a regeneration step for the solvent or lean oil
    • 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
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
    • F25J2220/66—Separating acid gases, e.g. CO2, SO2, H2S or RSH
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
    • 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
    • Y10S62/00—Refrigeration
    • Y10S62/928—Recovery of carbon dioxide
IT8123081A 1981-07-23 1981-07-23 Procedimento criogenico di rimozione di gas acidi da misceledi gas. IT1211081B (it)

Priority Applications (18)

Application Number Priority Date Filing Date Title
IT8123081A IT1211081B (it) 1981-07-23 1981-07-23 Procedimento criogenico di rimozione di gas acidi da misceledi gas.
US06/391,282 US4514203A (en) 1981-07-23 1982-06-23 Cryogenic process for removing acidic gases from gas mixtures
NZ201064A NZ201064A (en) 1981-07-23 1982-06-24 A cryogenic process for removing acidic gases from natural or synthesized gases using low molecular weight esters and ethers
GR68555A GR76184B (it) 1981-07-23 1982-06-24
NO82822145A NO822145L (no) 1981-07-23 1982-06-25 Fremgangsmaate for aa fjerne sure gasser fra gassblandinger (saerlig naturgass)
MT912A MTP912B (en) 1981-07-23 1982-06-28 Cryogonic process for removing acidu gases from gas mixture
AU85567/82A AU557319B2 (en) 1981-07-23 1982-07-02 Removing acid gases from gas mixtures
BR8204065A BR8204065A (pt) 1981-07-23 1982-07-12 Processo criogenico de remocao de gases acidos das mistura de gases
CA000407330A CA1177381A (en) 1981-07-23 1982-07-15 Cryogenic process for removing acidic gases from gas mixtures
GB08220605A GB2102696B (en) 1981-07-23 1982-07-15 Removal of acidic gases from gas mixtures
PL23751582A PL237515A1 (en) 1981-07-23 1982-07-16 Method of removing acid gases from natural or synthetic gaseous mixtures
RO108193A RO85733B (ro) 1981-07-23 1982-07-19 PROCEDEU CRIOGENIC DE îNDEPARTARE A GAZELOR ACIDE DIN AMESTECURI GAZOASE
ES514718A ES8402868A1 (es) 1981-07-23 1982-07-20 "procedimiento criogenico para la remocion de gases acidicos de mezclas de gases que los contengan".
OA57749A OA07157A (fr) 1981-07-23 1982-07-20 Procédé cryogénique pour l'enlèvement des gaz acides de mélanges de gaz qui les contiennent.
IN843/CAL/82A IN158235B (it) 1981-07-23 1982-07-21
DK328682A DK328682A (da) 1981-07-23 1982-07-21 Fremgangsmaade til fjernelse af sure gasser fra gasblandinger
YU01604/82A YU160482A (en) 1981-07-23 1982-07-22 Process for the cryogenic elimination of acid gases from gaseous mixures
DE19823227477 DE3227477A1 (de) 1981-07-23 1982-07-22 Verfahren zur entfernung von sauren gasen aus natuerlichen oder synthetischen gasgemischen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8123081A IT1211081B (it) 1981-07-23 1981-07-23 Procedimento criogenico di rimozione di gas acidi da misceledi gas.

Publications (2)

Publication Number Publication Date
IT8123081A0 IT8123081A0 (it) 1981-07-23
IT1211081B true IT1211081B (it) 1989-09-29

Family

ID=11203566

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8123081A IT1211081B (it) 1981-07-23 1981-07-23 Procedimento criogenico di rimozione di gas acidi da misceledi gas.

Country Status (18)

Country Link
US (1) US4514203A (it)
AU (1) AU557319B2 (it)
BR (1) BR8204065A (it)
CA (1) CA1177381A (it)
DE (1) DE3227477A1 (it)
DK (1) DK328682A (it)
ES (1) ES8402868A1 (it)
GB (1) GB2102696B (it)
GR (1) GR76184B (it)
IN (1) IN158235B (it)
IT (1) IT1211081B (it)
MT (1) MTP912B (it)
NO (1) NO822145L (it)
NZ (1) NZ201064A (it)
OA (1) OA07157A (it)
PL (1) PL237515A1 (it)
RO (1) RO85733B (it)
YU (1) YU160482A (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1193601B (it) * 1983-01-19 1988-07-21 Snam Progetti Procedimento criogenico di rimozione selettiva di gas acidi da miscele di gas mediante solvente
IT1193602B (it) * 1983-01-19 1988-07-21 Snam Progetti Procedimento criogenico di rimozione di gas acidi da miscele di gas mediante solvente
IT1190357B (it) * 1985-05-24 1988-02-16 Snam Progetti Procedimento criogenito di rimozione di gas acidi da miscele di gas mediante solventi
NO874821L (no) * 1986-12-02 1988-06-03 Norton Co Fremgangsmaate for aa fjerne karbondioksyd fra en gass.
ZA899705B (en) * 1989-01-26 1990-09-26 Aeci Ltd Purification of gases
DE4336790C2 (de) * 1993-10-28 1995-08-17 Ruhr Oel Gmbh Verfahren zum Reinigen von Druckgasen
US5927103A (en) * 1998-06-17 1999-07-27 Praxair Technology, Inc. Carbon dioxide production system with integral vent gas condenser
US6070431A (en) * 1999-02-02 2000-06-06 Praxair Technology, Inc. Distillation system for producing carbon dioxide
EP1539329B1 (en) * 2002-09-17 2010-07-14 Fluor Corporation Configurations and methods of acid gas removal
EP3960265A1 (de) * 2020-08-31 2022-03-02 Linde GmbH Verfahren und anlage zur herstellung von dimethylether

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732371A (en) * 1926-07-05 1929-10-22 Ig Farbenindustrie Ag Purifying oil
US2045321A (en) * 1932-04-19 1936-06-23 Texas Co Solvent extraction of hydrocarbon oil
US2139375A (en) * 1937-06-14 1938-12-06 Shell Dev Removal of so from gases
IT1056904B (it) * 1976-03-05 1982-02-20 Snam Progetti Procedimento per la purificazione di gas naturali ad alto contenuto di gas acidi
DE2923012A1 (de) * 1979-06-07 1980-12-18 Basf Ag Verfahren zur gleichzeitigen entfernung von wasser und schwefelwasserstoff aus gasen

Also Published As

Publication number Publication date
DK328682A (da) 1983-01-24
MTP912B (en) 1984-04-10
OA07157A (fr) 1984-03-31
YU160482A (en) 1985-03-20
IT8123081A0 (it) 1981-07-23
IN158235B (it) 1986-10-04
AU8556782A (en) 1983-01-27
DE3227477A1 (de) 1983-02-10
ES514718A0 (es) 1984-03-01
NO822145L (no) 1983-01-24
CA1177381A (en) 1984-11-06
DE3227477C2 (it) 1987-05-14
GB2102696B (en) 1985-05-09
PL237515A1 (en) 1983-02-28
AU557319B2 (en) 1986-12-18
GB2102696A (en) 1983-02-09
US4514203A (en) 1985-04-30
RO85733A (ro) 1984-11-25
NZ201064A (en) 1986-05-09
GR76184B (it) 1984-08-03
BR8204065A (pt) 1983-12-20
RO85733B (ro) 1984-11-30
ES8402868A1 (es) 1984-03-01

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