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公开(公告)号：EP1246947B1
公开(公告)日：2003-10-01
申请号：EP00988762.1
申请日：2000-11-28
发明人： VULETIC, Bogdan
IPC分类号： C21B13/14
CPC分类号： C21B13/002 , C21B13/14 , C21B2100/44 , Y02P10/136
摘要： The invention relates to a method for producing pig iron. Iron ore is reduced in a reduction shaft (1) for forming sponge iron which is subsequently introduced into the head of a melt-down gasifier (3). The sponge iron is melt open in said gasifier by means of a gasifying means that is also introduced into the head of the melt-down gasifier and an oxygen-containing gas and is melt-down to form liquid pig iron, whereby a reduction gas is produced at the same time. Said reduction gas is discharged from the head of the melt-down gasifier and is supplied to the reduction shaft for reducing the iron oxide. Operation of the melt-down gasifier is controlled in such a way that a reduction gas having a certain composition and being present in a certain amount is produced so that the sponge iron that is introduced into the melt-down gasifier is provided with a high metallisation degree. Operation of the melt-down gasifier is also controlled by introducing iron oxide therein. The metallisation degree of all the iron carriers which are introduced into the melt-down gasifier is reduced in relation to the metallisation degree of the sponge iron and by means of said iron oxide.
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2.发明授权VERFAHREN ZUM BEHANDELN VON WASCHWASSER AUS DER GASWÄSCHE EINER EISENERZREDUKTIONSANLAGE 失效方法洗涤水从铁矿石还原系统的气体擦洗治疗
公开(公告)号：EP0914295B1
公开(公告)日：2000-03-01
申请号：EP97923780.7
申请日：1997-04-30
发明人： VULETIC, Bogdan
IPC分类号： C02F9/00
CPC分类号： B01D53/1425 , C10K1/101 , Y02P20/152
摘要： A process is disclosed for treating the scrubbing water from the gas scrubbing process in an iron ore reduction plant. The scrubbing water is brought into direct contact with the gas in two gas scrubbers (1 to 4) arranged in two successive scrubbing stages at the gas-side, is withdrawn from the gas scrubbers and is supplied again to the gas scrubbers after the solids it contains are separated, and after it is treated and cooled. The scrubbing water is separately withdrawn from the two scrubbing stages and only the scrubbing water from the first scrubbing stage is largely freed from solids in a thickener (6), then led into a warm water container (8). The scrubbing water from the second scrubbing stage is directly led into a return water container (10) in which it releases carbon dioxide-rich flash gas led into the scrubbing water in the warm water container to enrich it with carbon dioxide. The scrubbing water from the warm water container is cooled in a heat exchanger (19), then fed back to the gas scrubbers of the two scrubbing stages together with the scrubbing water from the return water container (10). Moreover, part of the carbon dioxide-rich scrubbed gas or part of the carbon dioxide-rich water contained in the return water container may also be led into the warm water container to enrich the scrubbing water in the warm water container with carbon dioxide.
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3.发明公开VERFAHREN ZUM BEHANDELN VON WASCHWASSER AUS DER GASWÄSCHE EINER EISENERZREDUKTIONSANLAGE 失效方法洗涤水从铁矿石还原系统的气体擦洗治疗
公开(公告)号：EP0914295A1
公开(公告)日：1999-05-12
申请号：EP97923780.0
申请日：1997-04-30
发明人： VULETIC, Bogdan
CPC分类号： B01D53/1425 , C10K1/101 , Y02P20/152
摘要： A process is disclosed for treating the scrubbing water from the gas scrubbing process in an iron ore reduction plant. The scrubbing water is brought into direct contact with the gas in two gas scrubbers (1 to 4) arranged in two successive scrubbing stages at the gas-side, is withdrawn from the gas scrubbers and is supplied again to the gas scrubbers after the solids it contains are separated, and after it is treated and cooled. The scrubbing water is separately withdrawn from the two scrubbing stages and only the scrubbing water from the first scrubbing stage is largely freed from solids in a thickener (6), then led into a warm water container (8). The scrubbing water from the second scrubbing stage is directly led into a return water container (10) in which it releases carbon dioxide-rich flash gas led into the scrubbing water in the warm water container to enrich it with carbon dioxide. The scrubbing water from the warm water container is cooled in a heat exchanger (19), then fed back to the gas scrubbers of the two scrubbing stages together with the scrubbing water from the return water container (10). Moreover, part of the carbon dioxide-rich scrubbed gas or part of the carbon dioxide-rich water contained in the return water container may also be led into the warm water container to enrich the scrubbing water in the warm water container with carbon dioxide.
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公开(公告)号：EP0904415B1
公开(公告)日：2001-08-08
申请号：EP97924927.3
申请日：1997-05-30
发明人： VULETIC, Bogdan
CPC分类号： C21B13/002 , C21B13/02 , C21B13/14
摘要： In a device for producing sponge iron from lumps of iron oxide in a reduction shaft (1), a hot, dust-containing and carbon monoxide-rich reduction gas is used. The reduction gas is generated in a gas generator by partial oxidation of solid carbon-containing materials and is in part supplied to the reduction shaft through several lateral reduction inlets (3) arranged at the same height around the circumference of the reduction shaft at the lower end of the reduction zone. The lumps of iron oxide are introduced into the reduction shaft through its top area and discharged as sponge iron at its bottom end. Additional reduction gas inlets (15) shaped as downwardly open channels (11) which extend from the outside to the inside of the reduction shaft and/or shaped as ducts which extend obliquely downwards from the outside to the inside of the reduction shaft and have open inner ends are arranged below the plane of the lateral reduction gas inlets. Reduction gas may thus be also supplied to the radial inner area of the reduction shaft, so that the introduction of dust by the reduction gas is not limited to the outer area of the bulk material in the reduction shaft.
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5.发明授权
公开(公告)号：EP0910671B1
公开(公告)日：2001-07-04
申请号：EP97924906.7
申请日：1997-05-16
发明人： VULETIC, Bogdan
IPC分类号： C21B13/14
CPC分类号： C21B13/002 , C21B13/14 , F27D3/08 , F27D3/10
摘要： The invention relates to a device comprising a fusion gasifier (2) and a reduction shaft (1) arranged thereabove and for reduction of iron ore in spongy iron. The spongy iron is introduced through horizontal discharge devices (7) in the lower section of the reduction shaft, and a pipe connection (11) is introduced into the head section of the fusion gasifier where it is melted using a oxygen-containing gas and gasifying means also conveyed into the head of the fusion gasifier, and is reduced to liquid crude iron. A reduction gas is produced at the same time which is conveyed out of the head of the fusion gasifier. The discharge devices lead into a dust-blocking container (5) arranged in a lower section of the reduction shaft and to which the pipe connection leading to the fusion gasifier is attached. The dust-blocking container is connected to a feed device (10) for a seal gas at a higher pressure than the gas pressure in the head of the fusion gasifier thereby preventing gasifying gas from passing into the reduction shaft via the pipe connection. Humidity and volatile constituents have already been removed from the gasifying means before introduction into the fusion gasifier as a result of mixing hot spongy iron with the gasifying means before the introduction thereof into the centre of the gasifier head.
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6.发明公开
公开(公告)号：EP0910671A1
公开(公告)日：1999-04-28
申请号：EP97924906.0
申请日：1997-05-16
发明人： VULETIC, Bogdan
CPC分类号： C21B13/002 , C21B13/14 , F27D3/08 , F27D3/10
摘要： The invention relates to a device comprising a fusion gasifier (2) and a reduction shaft (1) arranged thereabove and for reduction of iron ore in spongy iron. The spongy iron is introduced through horizontal discharge devices (7) in the lower section of the reduction shaft, and a pipe connection (11) is introduced into the head section of the fusion gasifier where it is melted using a oxygen-containing gas and gasifying means also conveyed into the head of the fusion gasifier, and is reduced to liquid crude iron. A reduction gas is produced at the same time which is conveyed out of the head of the fusion gasifier. The discharge devices lead into a dust-blocking container (5) arranged in a lower section of the reduction shaft and to which the pipe connection leading to the fusion gasifier is attached. The dust-blocking container is connected to a feed device (10) for a seal gas at a higher pressure than the gas pressure in the head of the fusion gasifier thereby preventing gasifying gas from passing into the reduction shaft via the pipe connection. Humidity and volatile constituents have already been removed from the gasifying means before introduction into the fusion gasifier as a result of mixing hot spongy iron with the gasifying means before the introduction thereof into the centre of the gasifier head.
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公开(公告)号：EP0904415A1
公开(公告)日：1999-03-31
申请号：EP97924927.0
申请日：1997-05-30
发明人： VULETIC, Bogdan
CPC分类号： C21B13/002 , C21B13/02 , C21B13/14
摘要： In a device for producing sponge iron from lumps of iron oxide in a reduction shaft (1), a hot, dust-containing and carbon monoxide-rich reduction gas is used. The reduction gas is generated in a gas generator by partial oxidation of solid carbon-containing materials and is in part supplied to the reduction shaft through several lateral reduction inlets (3) arranged at the same height around the circumference of the reduction shaft at the lower end of the reduction zone. The lumps of iron oxide are introduced into the reduction shaft through its top area and discharged as sponge iron at its bottom end. Additional reduction gas inlets (15) shaped as downwardly open channels (11) which extend from the outside to the inside of the reduction shaft and/or shaped as ducts which extend obliquely downwards from the outside to the inside of the reduction shaft and have open inner ends are arranged below the plane of the lateral reduction gas inlets. Reduction gas may thus be also supplied to the radial inner area of the reduction shaft, so that the introduction of dust by the reduction gas is not limited to the outer area of the bulk material in the reduction shaft.
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公开(公告)号：EP1246947A1
公开(公告)日：2002-10-09
申请号：EP00988762.1
申请日：2000-11-28
发明人： VULETIC, Bogdan
IPC分类号： C21B13/14
CPC分类号： C21B13/002 , C21B13/14 , C21B2100/44 , Y02P10/136
摘要： The invention relates to a method for producing pig iron. Iron ore is reduced in a reduction shaft (1) for forming sponge iron which is subsequently introduced into the head of a melt-down gasifier (3). The sponge iron is melt open in said gasifier by means of a gasifying means that is also introduced into the head of the melt-down gasifier and an oxygen-containing gas and is melt-down to form liquid pig iron, whereby a reduction gas is produced at the same time. Said reduction gas is discharged from the head of the melt-down gasifier and is supplied to the reduction shaft for reducing the iron oxide. Operation of the melt-down gasifier is controlled in such a way that a reduction gas having a certain composition and being present in a certain amount is produced so that the sponge iron that is introduced into the melt-down gasifier is provided with a high metallisation degree. Operation of the melt-down gasifier is also controlled by introducing iron oxide therein. The metallisation degree of all the iron carriers which are introduced into the melt-down gasifier is reduced in relation to the metallisation degree of the sponge iron and by means of said iron oxide.
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公开(公告)号：EP1664353B1
公开(公告)日：2007-01-17
申请号：EP04765337.3
申请日：2004-09-17
发明人： VULETIC, Bogdan
IPC分类号： C21B3/08
CPC分类号： C21B3/08 , C21B2100/42
摘要： Disclosed is a method for granulating slag, especially from a blast furnace and/or a smelting reduction system. According to said method, a mixture of granulate and water obtained during the granulation process is delivered to a granulating container (4) and then to a dehydration system in which the granular slag is dehydrated while the vapors and gases that are created during the granulation process and contain H2S are at least partly condensed in a condensing chamber which is fluidically connected to the granulating container (4) by spraying water thereinto. Residual gases containing H2S are withdrawn from the condensing chamber below the point where water is sprayed in, and H2S is burned.
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公开(公告)号：EP1664353A1
公开(公告)日：2006-06-07
申请号：EP04765337.3
申请日：2004-09-17
发明人： VULETIC, Bogdan
IPC分类号： C21B3/08
CPC分类号： C21B3/08 , C21B2100/42
摘要： Disclosed is a method for granulating slag, especially from a blast furnace and/or a smelting reduction system. According to said method, a mixture of granulate and water obtained during the granulation process is delivered to a granulating container (4) and then to a dehydration system in which the granular slag is dehydrated while the vapors and gases that are created during the granulation process and contain H2S are at least partly condensed in a condensing chamber which is fluidically connected to the granulating container (4) by spraying water thereinto. Residual gases containing H2S are withdrawn from the condensing chamber below the point where water is sprayed in, and H2S is burned.
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