IT971862B - Impianto per desolforare e gassi ficare completamente carbone - Google Patents
Impianto per desolforare e gassi ficare completamente carboneInfo
- Publication number
- IT971862B IT971862B IT32908/72A IT3290872A IT971862B IT 971862 B IT971862 B IT 971862B IT 32908/72 A IT32908/72 A IT 32908/72A IT 3290872 A IT3290872 A IT 3290872A IT 971862 B IT971862 B IT 971862B
- Authority
- IT
- Italy
- Prior art keywords
- desulforating
- plant
- filling completely
- gases filling
- coal
- Prior art date
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)
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 |
---|---|
IT971862B true IT971862B (it) | 1974-05-10 |
Family
ID=22809101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT32908/72A IT971862B (it) | 1972-01-11 | 1972-12-14 | Impianto per desolforare e gassi ficare completamente carbone |
Country Status (10)
Country | Link |
---|---|
US (1) | US3804606A (it) |
JP (1) | JPS4881902A (it) |
BE (1) | BE793881A (it) |
CA (1) | CA958216A (it) |
DE (1) | DE2262971A1 (it) |
ES (1) | ES409568A1 (it) |
FR (1) | FR2167946A1 (it) |
GB (1) | GB1357990A (it) |
IT (1) | IT971862B (it) |
SE (1) | SE378257B (it) |
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 (it) * | 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 (it) * | 1991-02-05 | 1992-04-23 | Voest Alpine Ind Anlagen | |
US5765365A (en) * | 1993-03-15 | 1998-06-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Coal gasification power generator |
FI941141A (fi) * | 1993-03-15 | 1994-09-16 | Mitsubishi Heavy Ind Ltd | Kivihiilen kaasuunnukseen perustuva energiankehitin |
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 |
KR20090040406A (ko) * | 2006-05-05 | 2009-04-24 | 플라스코에너지 아이피 홀딩스, 에스.엘., 빌바오, 샤프하우젠 브랜치 | 플라즈마 토치 가열을 사용하는 가스 재구성 시스템 |
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 |
US8306665B2 (en) * | 2006-05-05 | 2012-11-06 | Plasco Energy Group Inc. | Control system for the conversion of carbonaceous feedstock into gas |
MX2008014200A (es) | 2006-05-05 | 2009-06-04 | Plasco Energy Ip Holdings S L | Gasificador orientado horizontalmente con sistema de transferencia lateral. |
US7451591B2 (en) * | 2006-05-08 | 2008-11-18 | Econo-Power International Corporation | Production enhancements on integrated gasification combined cycle power plants |
JP2009545636A (ja) * | 2006-06-05 | 2009-12-24 | プラスコエナジー アイピー ホールディングス、エス.エル.、ビルバオ、シャフハウゼン ブランチ | 垂直な連続処理領域を含むガス化装置 |
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 |
WO2009009891A1 (en) * | 2007-07-17 | 2009-01-22 | Plasco Energy Group Inc. | A gasifier comprising one or more fluid conduits |
WO2010076499A2 (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系统 |
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 FR FR7300863A patent/FR2167946A1/fr not_active Withdrawn
- 1973-01-11 SE SE7300367A patent/SE378257B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CA958216A (en) | 1974-11-26 |
SE378257B (it) | 1975-08-25 |
US3804606A (en) | 1974-04-16 |
JPS4881902A (it) | 1973-11-01 |
BE793881A (fr) | 1973-07-11 |
ES409568A1 (es) | 1975-11-16 |
GB1357990A (en) | 1974-06-26 |
DE2262971A1 (de) | 1973-07-19 |
FR2167946A1 (it) | 1973-08-24 |
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