ES409568A1 - Un procedimiento para gasificar carbon. - Google Patents
Un procedimiento para gasificar carbon.Info
- Publication number
- ES409568A1 ES409568A1 ES409568A ES409568A ES409568A1 ES 409568 A1 ES409568 A1 ES 409568A1 ES 409568 A ES409568 A ES 409568A ES 409568 A ES409568 A ES 409568A ES 409568 A1 ES409568 A1 ES 409568A1
- Authority
- ES
- Spain
- Prior art keywords
- coal
- utilized
- desulfurizing
- desulfurized
- gasifying coal
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/721—Multistage gasification, e.g. plural parallel or serial gasification stages
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/42—Sulfides or polysulfides of magnesium, calcium, strontium, or barium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/482—Gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
- C10J2300/1675—Integration of gasification processes with another plant or parts within the plant with the production of electricity making use of a steam turbine
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1892—Heat exchange between at least two process streams with one stream being water/steam
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Industrial Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
Un procedimiento para gasificar carbón en una pluralidad de lechos fluidificados a través de los cuales se conduce un flujo de gas en contracorriente con un flujo de carbón triturado introducido en un lecho de secado a través de un lecho de desvolatilización y gasificación a un lecho de combustión desde el cual se retiran las cenizas, caracterizado porque una porción de la corriente gaseosa es retirada del procesos antes de que esta corriente entre en el lecho de secado y la porción restante que pasa a través del lecho de secado es recirculada a través del lecho de gasificación y desvolatilización.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00216950A US3804606A (en) | 1972-01-11 | 1972-01-11 | Apparatus and method for desulfurizing and completely gasifying coal |
Publications (1)
Publication Number | Publication Date |
---|---|
ES409568A1 true ES409568A1 (es) | 1975-11-16 |
Family
ID=22809101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES409568A Expired ES409568A1 (es) | 1972-01-11 | 1972-12-13 | Un procedimiento para gasificar carbon. |
Country Status (10)
Country | Link |
---|---|
US (1) | US3804606A (es) |
JP (1) | JPS4881902A (es) |
BE (1) | BE793881A (es) |
CA (1) | CA958216A (es) |
DE (1) | DE2262971A1 (es) |
ES (1) | ES409568A1 (es) |
FR (1) | FR2167946A1 (es) |
GB (1) | GB1357990A (es) |
IT (1) | IT971862B (es) |
SE (1) | SE378257B (es) |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3977844A (en) * | 1973-05-09 | 1976-08-31 | Slyke William J Van | Process for producing a sulfur free combustible gas |
DE2400772B2 (de) * | 1974-01-08 | 1977-07-14 | Khizia, Klaus, Dr-Ing, 4600 Dort mund, L & C Stemmuller GmbH, 5270 Gummersbach | Anlage zur herstellung von festen und gasfoermigen schwefelarmen produkten aus kohle fuer die kombinierte strom- und gaserzeugung |
US3978657A (en) * | 1974-02-06 | 1976-09-07 | Combustion Turbine Power, Inc. | Turbine system |
DE2429993C3 (de) * | 1974-06-22 | 1984-01-05 | Krupp-Koppers Gmbh, 4300 Essen | Verfahren zum Erzeugen elektrischer Energie |
AR205469A1 (es) * | 1974-07-04 | 1976-05-07 | Kiener Karl | Procedimiento y dispositivo de obtencion de gas combustible |
US4032305A (en) * | 1974-10-07 | 1977-06-28 | Squires Arthur M | Treating carbonaceous matter with hot steam |
US4099374A (en) * | 1976-04-15 | 1978-07-11 | Westinghouse Electric Corp. | Gasifier-combined cycle plant |
GB1573319A (en) * | 1976-05-14 | 1980-08-20 | Penny Turbines Ltd Noel | Engine in which fuel is reacted in a plurality of stages |
CH614016A5 (es) * | 1976-06-11 | 1979-10-31 | Sulzer Ag | |
US4277416A (en) * | 1977-02-17 | 1981-07-07 | Aminoil, Usa, Inc. | Process for producing methanol |
US4212160A (en) * | 1977-12-22 | 1980-07-15 | Combustion Engineering, Inc. | Combined cycle power plant using low Btu gas |
GB2027444B (en) * | 1978-07-28 | 1983-03-02 | Exxon Research Engineering Co | Gasification of ash-containing solid fuels |
DE2931427A1 (de) * | 1978-11-17 | 1981-02-19 | Steag Ag | Anlage zur energiegewinnung aus festen fossilen brennstoffen, insbesondere steinkohle |
US4238923A (en) * | 1979-06-22 | 1980-12-16 | Combustion Engineering, Inc. | Method of low temperature heat utilization for atmospheric pressure coal gasification |
US4282010A (en) * | 1979-07-17 | 1981-08-04 | The United States Of America As Represented By The United States Department Of Energy | Fluidized bed injection assembly for coal gasification |
US4391611A (en) * | 1981-03-05 | 1983-07-05 | The United States Of America As Represented By The United States Department Of Energy | Gasification system |
DE3228532A1 (de) * | 1982-07-30 | 1984-02-02 | BKMI Industrieanlagen GmbH, 8000 München | Verfahren zur verschwelung und vergasung von kohlenstoffhaltigen feststoffen |
US4490157A (en) * | 1983-01-10 | 1984-12-25 | Combustion Engineering, Inc. | Indirectly heated fluidized bed gasifier |
US4496370A (en) * | 1983-04-04 | 1985-01-29 | Phillips Petroleum Company | Zinc oxide-char gasification process |
US4745038A (en) * | 1983-11-10 | 1988-05-17 | Westinghouse Electric Corp. | Integrated gasification iron-air electrical system |
DD237762A3 (de) * | 1984-01-30 | 1986-07-30 | Schwermasch Liebknecht Veb K | Verfahren und vorrichtung zur mehrstufigen veredlung von organischen schuettguetern |
GB8423949D0 (en) * | 1984-09-21 | 1984-10-31 | English Electric Co Ltd | Fluidised-bed gasifier |
US4667467A (en) * | 1985-06-04 | 1987-05-26 | Westinghouse Electric Corp. | Method for energy conversion |
DE3668347D1 (de) * | 1985-09-02 | 1990-02-22 | Siemens Ag | Kombiniertes gas- und dampfturbinenkraftwerk. |
GB2191782A (en) * | 1986-06-17 | 1987-12-23 | Midrex Int Bv | Method and apparatus for producing upgraded synthetic fuel gas from coal |
DE3629817A1 (de) * | 1986-09-02 | 1988-03-03 | Bergwerksverband Gmbh | Verfahren zur verringerung der schadstoffemisionen von kraftwerken mit kombinierten gas-/dampfturbinenprozessen mit vorgeschalteter kohlevergasung |
DE69100679T2 (de) * | 1990-07-23 | 1994-04-28 | Mitsubishi Heavy Ind Ltd | Vergasende Verbrennungsmethode und vergasende Energieerzeugungsmethode. |
DE4103362C1 (es) * | 1991-02-05 | 1992-04-23 | Voest Alpine Ind Anlagen | |
FI941141A (fi) * | 1993-03-15 | 1994-09-16 | Mitsubishi Heavy Ind Ltd | Kivihiilen kaasuunnukseen perustuva energiankehitin |
US5765365A (en) * | 1993-03-15 | 1998-06-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Coal gasification power generator |
US5666801A (en) * | 1995-09-01 | 1997-09-16 | Rohrer; John W. | Combined cycle power plant with integrated CFB devolatilizer and CFB boiler |
US5895508A (en) * | 1996-08-09 | 1999-04-20 | The United States Of America As Represented By The United States Department Of Energy | Down-flow moving-bed gasifier with catalyst recycle |
CN103995503A (zh) * | 2006-05-05 | 2014-08-20 | 普拉斯科能源Ip控股集团毕尔巴鄂沙夫豪森分公司 | 用于将含碳原料转化成气体的控制*** |
NZ573217A (en) * | 2006-05-05 | 2011-11-25 | Plascoenergy Ip Holdings S L Bilbao Schaffhausen Branch | A facility for conversion of carbonaceous feedstock into a reformulated syngas containing CO and H2 |
US8435315B2 (en) | 2006-05-05 | 2013-05-07 | Plasco Energy Group Inc. | Horizontally-oriented gasifier with lateral transfer system |
CN103395743A (zh) * | 2006-05-05 | 2013-11-20 | 普拉斯科能源Ip控股公司毕尔巴鄂-沙夫豪森分公司 | 使用等离子体炬热的气体重整*** |
US7451591B2 (en) * | 2006-05-08 | 2008-11-18 | Econo-Power International Corporation | Production enhancements on integrated gasification combined cycle power plants |
AP2008004698A0 (en) * | 2006-06-05 | 2008-12-31 | Plascoenergy Ip Holdings S L | A gasifier comprising vertically successive processing regions |
US20080148739A1 (en) * | 2006-12-22 | 2008-06-26 | Paul Marius A | Fluidized bed heavy fuel combustor |
WO2008104058A1 (en) * | 2007-02-27 | 2008-09-04 | Plasco Energy Group Inc. | Gasification system with processed feedstock/char conversion and gas reformulation |
US20080277265A1 (en) * | 2007-05-11 | 2008-11-13 | Plasco Energy Group, Inc. | Gas reformulation system comprising means to optimize the effectiveness of gas conversion |
US20080302106A1 (en) * | 2007-06-07 | 2008-12-11 | Econo-Power International Corporation | Integration of coal fired steam plants with integrated gasification combined cycle power plants |
US20100154304A1 (en) * | 2007-07-17 | 2010-06-24 | Plasco Energy Group Inc. | Gasifier comprising one or more fluid conduits |
CA2747357A1 (fr) | 2008-12-16 | 2010-07-08 | Jean-Xavier Morin | Procede et dispositif de production et de purification de gaz de synthese |
US20100313442A1 (en) * | 2009-06-12 | 2010-12-16 | Steven Craig Russell | Method of using syngas cooling to heat drying gas for a dry feed system |
US9321640B2 (en) | 2010-10-29 | 2016-04-26 | Plasco Energy Group Inc. | Gasification system with processed feedstock/char conversion and gas reformulation |
DE102015219398A1 (de) * | 2015-10-07 | 2017-04-13 | Siemens Aktiengesellschaft | Verfahren zum Betreiben eines Gas-und-Dampf-Kombinationskraftwerks sowie Gas-und-Dampf-Kombinationskraftwerk |
CN109852423B (zh) * | 2018-11-23 | 2020-08-04 | 龙正环保股份有限公司 | 基于水管式冷凝饱和蒸汽锅炉驱动的生物质气化循环*** |
EP4026886B1 (en) * | 2021-01-06 | 2023-10-11 | GIDARA Energy B.V. | Process for producing synthesis gas through thermochemical conversion of biomass and waste materials |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2683657A (en) * | 1948-05-29 | 1954-07-13 | Hydrocarbon Research Inc | Gasification of carbonaceous solids |
US2727813A (en) * | 1951-05-31 | 1955-12-20 | Universal Oil Prod Co | Production of combustible gas from hydrocarbonaceous solids, particularly bituminous coals |
US3088816A (en) * | 1960-12-09 | 1963-05-07 | Huntington Chemical Corp | Method and apparatus for the dry ash generation of hydrogen and carbon monoxide gases from solid fuels |
GB1200727A (en) * | 1966-11-15 | 1970-07-29 | Struthers Scientific Int Corp | Gas turbine plant comprising a combustible gas producer |
US3481834A (en) * | 1968-08-21 | 1969-12-02 | Arthur M Squires | Process and apparatus for desulfurizing fuels |
US3597327A (en) * | 1969-04-02 | 1971-08-03 | Arthur M Squires | Process for pyrolyzing a solid or liquid hydrocarbonaceous fuel in a fluidized bed |
-
0
- BE BE793881D patent/BE793881A/xx unknown
-
1972
- 1972-01-11 US US00216950A patent/US3804606A/en not_active Expired - Lifetime
- 1972-11-23 CA CA157,226A patent/CA958216A/en not_active Expired
- 1972-12-11 GB GB5700672A patent/GB1357990A/en not_active Expired
- 1972-12-13 ES ES409568A patent/ES409568A1/es not_active Expired
- 1972-12-14 IT IT32908/72A patent/IT971862B/it active
- 1972-12-22 DE DE2262971A patent/DE2262971A1/de active Pending
-
1973
- 1973-01-11 JP JP48005590A patent/JPS4881902A/ja active Pending
- 1973-01-11 SE SE7300367A patent/SE378257B/xx unknown
- 1973-01-11 FR FR7300863A patent/FR2167946A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CA958216A (en) | 1974-11-26 |
BE793881A (fr) | 1973-07-11 |
IT971862B (it) | 1974-05-10 |
DE2262971A1 (de) | 1973-07-19 |
JPS4881902A (es) | 1973-11-01 |
US3804606A (en) | 1974-04-16 |
SE378257B (es) | 1975-08-25 |
FR2167946A1 (es) | 1973-08-24 |
GB1357990A (en) | 1974-06-26 |
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