SE457355B - MAKE SURE TO PREPARE A CLEAN, CARBON OXIDE AND GAS GAS INCLUDING GAS - Google Patents

MAKE SURE TO PREPARE A CLEAN, CARBON OXIDE AND GAS GAS INCLUDING GAS

Info

Publication number
SE457355B
SE457355B SE8504439A SE8504439A SE457355B SE 457355 B SE457355 B SE 457355B SE 8504439 A SE8504439 A SE 8504439A SE 8504439 A SE8504439 A SE 8504439A SE 457355 B SE457355 B SE 457355B
Authority
SE
Sweden
Prior art keywords
gas
clean
prepare
reaction chamber
make sure
Prior art date
Application number
SE8504439A
Other languages
Swedish (sv)
Other versions
SE8504439L (en
SE8504439D0 (en
Inventor
S Santen
L Bentell
Original Assignee
Skf Steel Eng Ab
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
Publication of SE8504439D0 publication Critical patent/SE8504439D0/en
Priority to SE8504439A priority Critical patent/SE457355B/en
Application filed by Skf Steel Eng Ab filed Critical Skf Steel Eng Ab
Priority to AU62582/86A priority patent/AU589997B2/en
Priority to DE19863631015 priority patent/DE3631015A1/en
Priority to FI863726A priority patent/FI863726A7/en
Priority to IL80027A priority patent/IL80027A0/en
Priority to IT8621793A priority patent/IT1213497B/en
Priority to GB8622866A priority patent/GB2180849B/en
Priority to JP61223929A priority patent/JP2509192B2/en
Priority to AT0256086A priority patent/AT396366B/en
Priority to CA000518961A priority patent/CA1309589C/en
Priority to BE0/217201A priority patent/BE905480A/en
Priority to FR868613342A priority patent/FR2587717B1/en
Priority to BR8701328A priority patent/BR8701328A/en
Publication of SE8504439L publication Critical patent/SE8504439L/en
Publication of SE457355B publication Critical patent/SE457355B/en

Links

Classifications

    • 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
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • 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
    • C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Industrial Gases (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Description

1D 15 20 25 30 457 355* Huvudändamålet med föreliggande uppfinning är sålunda att" åstadkomma ett sätt som medger utnyttjande av godtyckliga kol- och/eller kolväteinnehàllande utgàngsmaterial för gas- generering under utnyttjande av kommersiellt känd teknik, varvid gasen inte behöver underkastas energikrävande och kostnadskrävande reningssteg för användning som t ex re- duktionsgas, förbränningsgas eller syntesgas. 1D 15 20 25 30 457 355* The main purpose of the present invention is thus to provide a method that allows the use of any carbon and/or hydrocarbon-containing starting materials for gas generation using commercially known technology, whereby the gas does not need to be subjected to energy-consuming and costly purification steps for use as, for example, reduction gas, combustion gas or synthesis gas.

Huvudändamàlet uppnås vid det inledningsvis angivna sättet genom särdraget att den framställda gasen för avlägsnande av i gasen förekommande kolväten inmatas i en efterreak- tionskammare under samtidig tillförsel av en plasmagene-. ratorupphettad gas.The main objective is achieved in the method stated at the outset by the feature that the gas produced for the removal of hydrocarbons present in the gas is fed into a post-reaction chamber while simultaneously supplying a plasma generator-heated gas.

Det har visat sig att genom tillförsel av en het, plasma- generatorupphettad gas, vilken uppvisar mycket hög ener- gitäthet, erhålles en termisk sönderdelning av i gasen från förgasaren kommande kolväten och reaktionen med H20, 02 och/eller C02 i gasen till bildning av H2 och CO. Genom just den höga energitätheten i den tillförda gasen krävs en förhållandevis liten tillförd gasvolym, vilket gör pro- cessen möjlig.It has been shown that by supplying a hot, plasma generator-heated gas, which exhibits a very high energy density, a thermal decomposition of hydrocarbons in the gas from the gasifier is achieved and the reaction with H20, 02 and/or CO2 in the gas to form H2 and CO. Due to the high energy density of the supplied gas, a relatively small supplied gas volume is required, which makes the process possible.

Gasen kan framställas genom pyrolys eller partiell för- bränning av kol- och/eller kolvätehaltigt material, t ex torv, stenkol, antracit, skogsavfall. I det fall koksugns- gas härledd från pyrolys av stenkol skall utnyttjas ingår även andra föroreningar än kolväten i flykten från kolet.The gas can be produced by pyrolysis or partial combustion of carbon and/or hydrocarbon-containing material, e.g. peat, coal, anthracite, forest waste. In the case where coke oven gas derived from the pyrolysis of coal is to be used, impurities other than hydrocarbons are also included in the escape from the coal.

En stor fördel med uppfinningen är härvid att även dessa spaltas i efterreaktionskammaren.A major advantage of the invention is that these are also cleaved in the post-reaction chamber.

Enligt en utföringsform leds gasen efter efterreaktions- kammaren genom en fyllning av kalksten eller dolomit för svavelrening. Den för nämnda svavelrening utnyttjade kalk- 10 15 20 25 30 457 355 stenen och/eller dolomiten katalyserar även spjälkning av kolväten och reaktion med oxidationsmedel. Härigenom kan elenergiförbrukningen i efterreaktionskammarsteget i motsvarande grad sänkas.According to one embodiment, the gas is passed after the post-reaction chamber through a filling of limestone or dolomite for sulfur removal. The limestone and/or dolomite used for said sulfur removal also catalyzes the splitting of hydrocarbons and the reaction with the oxidizing agent. This allows the electrical energy consumption in the post-reaction chamber stage to be reduced to a corresponding extent.

Enligt ytterligare en utföringsform regleras halten C02 + H20 i gasen från efterreaktionskammaren till under 5%.According to a further embodiment, the CO2 + H20 content in the gas from the post-reaction chamber is regulated to below 5%.

Ytterligare fördelar och kännetecken hos uppfinningen kom- mer att framgå av nedanstående detaljerade beskrivning i anslutning till bifogade ritning, på vilken figuren sche- matiskt visar ett flödesschema för en gasframställnings- process enligt föreliggande uppfinning ansluten till en efterföljande reduktionsprocess.Further advantages and features of the invention will become apparent from the following detailed description in connection with the accompanying drawing, in which the figure schematically shows a flow chart for a gas production process according to the present invention connected to a subsequent reduction process.

En rå gas framställes ienïmfl l betecknad förgasare eller koksugn. Den genererade råa gasen inmatas i en efterreak- tionskammare 2. I anslutning till efterreaktionskammaren är anordnad åtminstone en plasmagenerator 3 för tillförsel av en het gas med hög energitäthet. I efterreaktionskam- maren spjälkas och reageras i den råa gasen förekommande kolväten till CO + H2. För justering av förhållandet väte/ kol kan finfördelad koks respektive H20 införas genom lansar 4 i efterreaktionskammaren.A raw gas is produced in a gasifier or coke oven designated 1. The generated raw gas is fed into a post-reaction chamber 2. At least one plasma generator 3 is arranged adjacent to the post-reaction chamber for supplying a hot gas with high energy density. In the post-reaction chamber, hydrocarbons present in the raw gas are split and reacted to form CO + H2. To adjust the hydrogen/carbon ratio, finely divided coke or H20 can be introduced through lances 4 into the post-reaction chamber.

Härefter underkastas gasen en svavelrening i schaktet 5 innehållande en fyllning 6 av kalksten eller dolomit, som pàfylles genom en gastät slussanordning 7 under det att den förbrukade fyllningen avdrages vid schaktets botten genom en gastät slussanordning 8. I kalkstens eller dolo- mitfyllningen erhålles dessutom en katalytisk spjälkning av eventuella kvarvarande kolväten i gasen. Detta kan ut- nyttjas för att reducera elenergiförbrukningen i plasma- generatorn 3, som utnyttjas för termisk sönderdelning av kolväteinnehållet. 10 15 20 25 457 355 Den sålunda renade, väsentligen enbart H2 + CO samt en mindre andel H20 +(Ib innehållande gasen kan_sedan trans- porteras vidare till en kammare 9 för reglering av tempe- ratur och sammansättning före inträdet i schaktugnen 10 för reduktion av oxidiskt material.The gas is then subjected to sulfur purification in the shaft 5 containing a filling 6 of limestone or dolomite, which is replenished through a gas-tight lock device 7 while the spent filling is withdrawn at the bottom of the shaft through a gas-tight lock device 8. In the limestone or dolomite filling, a catalytic cleavage of any remaining hydrocarbons in the gas is also obtained. This can be used to reduce the electrical energy consumption in the plasma generator 3, which is used for thermal decomposition of the hydrocarbon content. The gas thus purified, essentially only containing H2 + CO and a smaller proportion of H20 + (Ib, can then be transported further to a chamber 9 for temperature and composition control before entering the shaft furnace 10 for reduction of oxidic material.

Den framställda gasen inmatas genom ett i schaktugnens 10 nedre del beläget inlopp 12 och bringas att strömma i motström mot det metalloxidinnehâllande materialet. Den 'delvis förbrukade, med föroreningar och stoft bemängda gasen avdrages genom ett utlopp 13 och renas i en tvätt 14.The produced gas is fed through an inlet 12 located in the lower part of the shaft furnace 10 and is caused to flow in countercurrent to the metal oxide-containing material. The partially spent gas, laden with impurities and dust, is withdrawn through an outlet 13 and purified in a wash 14.

Den renade, delvis förbrukade gasen kan sedan utnyttjas för andra ändamål vilket antydes med pilen 15. En delström av gasen kan vid behov àtercirkuleras i processen, via ledningen 16, l6a, l6b, exempelvis för att i blandningskammaren 9 an- vändas för reglering av temperaturen och sammansättningen av den gas som därefter införes i schaktet, och vidare kan en delström av den återcirkulerade gasen utnyttjas som gas i plasmageneratorn i efterreaktionskammaren.The purified, partially consumed gas can then be used for other purposes, as indicated by arrow 15. A partial stream of the gas can, if necessary, be recirculated in the process, via line 16, 16a, 16b, for example to be used in the mixing chamber 9 for regulating the temperature and composition of the gas that is subsequently introduced into the shaft, and furthermore, a partial stream of the recirculated gas can be used as gas in the plasma generator in the post-reaction chamber.

Uppfinningen belyses närmare nedan i anslutning till ett utföringsexempel. w EXEMPEL 10 ton skogsavfall innehållande 30% vatten och med elemen- taranalysen . C H 0 N S Aska 51 6,2 42 0,2 0,5 0,5 % införs i toppen av en motströmsförgasare per timme under det att oxidationsmedel införs i botten av förgasaren i form av till l000OC förvärmd luft. Lufttillsatsen är ca 10 15 457 355 3700 Nm3. Toppgasens sammansättning blir CO C02 H2 2 2 25,8 9,8 41,1 4,8 15,8 2,9 % Samtidigt uttages ett tjärprov, som visar att gasen inne- håller 3,2 gram tjära/Nm3.The invention is illustrated in more detail below in connection with an embodiment. w EXAMPLE 10 tons of forest waste containing 30% water and with the elemental analysis. C H 0 N S Ash 51 6.2 42 0.2 0.5 0.5 % are introduced into the top of a countercurrent gasifier per hour while oxidant is introduced into the bottom of the gasifier in the form of air preheated to l000OC. The air addition is approximately 10 15 457 355 3700 Nm3. The composition of the top gas is CO C02 H2 2 2 25.8 9.8 41.1 4.8 15.8 2.9 % At the same time, a tar sample is taken, which shows that the gas contains 3.2 grams of tar/Nm3.

Den utgående gasens temperatur är SSOOC och dess volym är ca 17200 Nm3. Gasen inleds nu i efterreaktionskammaren och upphettas med plasmageneratorupphettad luft. Den erforder- liga luftmängden är endast ca 2100 Nm3. Med hjälp av plas- mageneratorn ökas temperaturen på ingående gas till 1250°C, varvid åtgår ca 8,7 MWh elektrisk energi.The temperature of the outgoing gas is SSOOC and its volume is approximately 17200 Nm3. The gas is now introduced into the post-reaction chamber and heated with plasma generator heated air. The required air volume is only approximately 2100 Nm3. With the help of the plasma generator, the temperature of the incoming gas is increased to 1250°C, which consumes approximately 8.7 MWh of electrical energy.

Den sålunda upphettade pyrolysgasen befrias därmed från sitt metan- och tjärinnehàll, varigenom utgående gas får följande sammansättning CO C02 28,6 4,a , 29,6 13,6 23,1: Den utgående gasmängden blir ca 19900 Nm3.The pyrolysis gas thus heated is thereby freed from its methane and tar content, whereby the outgoing gas has the following composition CO C02 28.6 4.a , 29.6 13.6 23.1: The outgoing gas quantity is approximately 19900 Nm3.

Claims (1)

1. 457 355 P a t e n t k r a v Sätt vid framställning av en koloxid och vätgas inne- hållande gas som medger utnyttjande av kommersiellt känd teknik och utnyttjande av godtyckliga kol- och/eller kolväteinnehàllande utgàngsmaterial, vid vilket gasen 5 inte behöver underkastas energikrävande och kostnads- krävande reningssteg för användning som t ex reduktions- gas, förbränningsgas eller syntesgas, k ä n n e t e c k - n a t av att den framställda gasen för avlägsnande av i gasen förekommande kolväten inmatas i en reaktions- l0 I kammare under samtidig tillförsel av en plasmagenerator- upphettad gas.A 457 355 patent method for the production of a carbon monoxide and hydrogen gas containing gas which allows the use of commercially known technology and the use of any carbonaceous and / or hydrocarbonaceous feedstock, in which the gas does not need to be subjected to energy-intensive and costly purification steps. for use as a reduction gas, combustion gas or synthesis gas, characterized in that the gas produced to remove hydrocarbons present in the gas is fed into a reaction chamber in a simultaneous supply of a plasma generator-heated gas.
SE8504439A 1985-09-25 1985-09-25 MAKE SURE TO PREPARE A CLEAN, CARBON OXIDE AND GAS GAS INCLUDING GAS SE457355B (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
SE8504439A SE457355B (en) 1985-09-25 1985-09-25 MAKE SURE TO PREPARE A CLEAN, CARBON OXIDE AND GAS GAS INCLUDING GAS
AU62582/86A AU589997B2 (en) 1985-09-25 1986-09-11 A method of producing a clean gas containing carbon monoxide and hydrogen
DE19863631015 DE3631015A1 (en) 1985-09-25 1986-09-12 METHOD FOR THE PRODUCTION OF A CLEAN GAS CONTAINING CARBON MONOXIDE HYDROGEN
FI863726A FI863726A7 (en) 1985-09-25 1986-09-15 A method for producing a pure gas containing carbon monoxide and hydrogen gas.
IL80027A IL80027A0 (en) 1985-09-25 1986-09-15 Method of producing a clean gas containing carbon monoxide and hydrogen
IT8621793A IT1213497B (en) 1985-09-25 1986-09-23 PRODUCTION PROCESS OF A GAS CONTAINING CARBON AND HYDROGEN MONOXIDE.
GB8622866A GB2180849B (en) 1985-09-25 1986-09-23 A method of producing a clean gas containing carbon monoxide and hydrogen
JP61223929A JP2509192B2 (en) 1985-09-25 1986-09-24 Method for producing carbon monoxide and hydrogen containing gas
FR868613342A FR2587717B1 (en) 1985-09-25 1986-09-24 PROCESS FOR PRODUCING A PURE GAS CONTAINING CARBON OXIDE AND HYDROGEN
AT0256086A AT396366B (en) 1985-09-25 1986-09-24 METHOD FOR PRODUCING A CARBON MONOXIDE AND HYDROGEN CONTAINING GAS USING A PLASMA GENERATOR WITH FOLLOWING DESULFURATION
CA000518961A CA1309589C (en) 1985-09-25 1986-09-24 Method of producing a clean gas containing carbon monoxide and hydrogen
BE0/217201A BE905480A (en) 1985-09-25 1986-09-24 PROCESS FOR PRODUCING A PURE GAS CONTAINING CARBON OXIDE AND HYDROGEN.
BR8701328A BR8701328A (en) 1985-09-25 1987-03-24 PROCESS FOR THE PRODUCTION OF A GAS CONTAINING CARBON MONOXIDE AND HYDROGEN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8504439A SE457355B (en) 1985-09-25 1985-09-25 MAKE SURE TO PREPARE A CLEAN, CARBON OXIDE AND GAS GAS INCLUDING GAS

Publications (3)

Publication Number Publication Date
SE8504439D0 SE8504439D0 (en) 1985-09-25
SE8504439L SE8504439L (en) 1987-03-26
SE457355B true SE457355B (en) 1988-12-19

Family

ID=20361519

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8504439A SE457355B (en) 1985-09-25 1985-09-25 MAKE SURE TO PREPARE A CLEAN, CARBON OXIDE AND GAS GAS INCLUDING GAS

Country Status (13)

Country Link
JP (1) JP2509192B2 (en)
AT (1) AT396366B (en)
AU (1) AU589997B2 (en)
BE (1) BE905480A (en)
BR (1) BR8701328A (en)
CA (1) CA1309589C (en)
DE (1) DE3631015A1 (en)
FI (1) FI863726A7 (en)
FR (1) FR2587717B1 (en)
GB (1) GB2180849B (en)
IL (1) IL80027A0 (en)
IT (1) IT1213497B (en)
SE (1) SE457355B (en)

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SE8605211L (en) * 1986-12-04 1988-06-05 Skf Steel Eng Ab SET TO MAKE A GAS EMERGENCY FOR ENERGY PRODUCTION
SE459584B (en) * 1987-10-02 1989-07-17 Studsvik Ab PROCEDURES FOR PROCESSING OF RAAGAS MANUFACTURED FROM COAL CONTENTS
US5213587A (en) * 1987-10-02 1993-05-25 Studsvik Ab Refining of raw gas
US4880439A (en) * 1988-05-05 1989-11-14 Texaco Inc. High temperature desulfurization of synthesis gas
NO174471C (en) * 1991-12-12 1994-05-11 Kvaerner Eng Method of preventing and removing fouling by pyrolytic cleavage of hydrocarbons
FI96321C (en) * 1993-06-11 1996-06-10 Enviropower Oy Method and reactor for treating process gas
NL1001555C2 (en) * 1995-10-27 1997-05-02 Biomass Technology Group B V Catalytically producing combustible gases, e.g., for generating energy
EP0801218B1 (en) * 1996-04-09 2001-07-11 ANSALDO RICERCHE S.r.l. Method and system of producing and utilizing fuel gases, in particular gases obtained from biomasses or refuse
US20080202028A1 (en) * 2005-06-03 2008-08-28 Plasco Energy Group Inc. System For the Conversion of Carbonaceous Fbedstocks to a Gas of a Specified Composition
DE102008049579A1 (en) 2008-09-30 2010-04-01 Uhde Gmbh Hot gas cleaning
KR101570882B1 (en) * 2009-08-04 2015-11-23 에스케이이노베이션 주식회사 Gasification of carbon-containing material including pyrolysis of methane and carbon dioxide conversion reaction
US9611437B2 (en) * 2010-01-12 2017-04-04 Lummus Technology Inc. Producing low methane syngas from a two-stage gasifier
RO126941B1 (en) * 2011-05-03 2013-12-30 Costin-Marian Frâncu Process and installation for thermally plasma treating a gaseous mixture
US10927007B2 (en) 2014-10-31 2021-02-23 Caphenia Gmbh Method and plant for the production of synthesis gas
CN104629779A (en) * 2014-12-12 2015-05-20 中山大学 Process for producing synthetic gas from urban garbage by virtue of combination of pyrolysis and plasma
WO2023155974A1 (en) 2022-02-15 2023-08-24 Universität Stuttgart Solid plasma reactor and method of operating a fixed bed reactor
WO2023155975A1 (en) 2022-02-15 2023-08-24 Universität Stuttgart Process and device for obtaining carbon monoxide from atmospheric carbon dioxide, using a solid-plasma reactor

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FR948266A (en) * 1946-06-24 1949-07-27 Nat Smelting Co Ltd Process for removing sulfur compounds from gases
US2701757A (en) * 1946-12-17 1955-02-08 Texaco Development Corp Process of making synthesis gas
GB1475731A (en) * 1973-03-26 1977-06-01 Skf Ind Trading & Dev Method of producing reduction gas
SE371453C (en) * 1973-03-26 1978-01-23 Skf Ind Trading & Dev KIT FOR PRODUCTION OF REDUCTION GAS
BE814899A (en) * 1974-05-10 1974-11-12 PROCESS FOR MANUFACTURING HOT REDUCING GAS.
BE815963A (en) * 1974-06-05 1974-09-30 HOT REDUCING GAS MANUFACTURING PROCESS.
US4123502A (en) * 1975-02-06 1978-10-31 Heinz Holter Process for the purification of gas generated in the pressure gasification of coal
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NL8302281A (en) * 1983-06-28 1985-01-16 Shell Int Research PROCESS FOR PREPARING A CARBON MONOXIDE AND HYDROGEN-CONTAINING GAS.
CA1228482A (en) * 1983-11-29 1987-10-27 Jan C. De Waal Reduction of metal compounds
FR2559776B1 (en) * 1984-02-16 1987-07-17 Creusot Loire SYNTHESIS GAS PRODUCTION PROCESS
SE453920B (en) * 1985-03-01 1988-03-14 Skf Steel Eng Ab SET AND DEVICE FOR GASING OF FOSSIL FUEL AND REFORM OF GAS FUEL

Also Published As

Publication number Publication date
ATA256086A (en) 1992-12-15
FR2587717B1 (en) 1990-03-02
DE3631015C2 (en) 1988-10-06
BE905480A (en) 1987-01-16
JPS6274993A (en) 1987-04-06
IL80027A0 (en) 1986-12-31
AU589997B2 (en) 1989-10-26
AU6258286A (en) 1987-03-26
AT396366B (en) 1993-08-25
FR2587717A1 (en) 1987-03-27
FI863726L (en) 1987-03-26
FI863726A7 (en) 1987-03-26
DE3631015A1 (en) 1987-04-16
SE8504439L (en) 1987-03-26
GB2180849A (en) 1987-04-08
JP2509192B2 (en) 1996-06-19
IT1213497B (en) 1989-12-20
GB8622866D0 (en) 1986-10-29
IT8621793A0 (en) 1986-09-23
FI863726A0 (en) 1986-09-15
GB2180849B (en) 1989-12-28
CA1309589C (en) 1992-11-03
BR8701328A (en) 1988-09-27
SE8504439D0 (en) 1985-09-25

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