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    • 84. 发明公开
    • BLAST FURNACE OPERATING METHOD
    • 高炉操作方法
    • EP3266883A1
    • 2018-01-10
    • EP16758613.0
    • 2016-02-22
    • JFE Steel Corporation
    • YAMAMOTO, NaokiMURAO, AkinoriKAWASHIMA, TomoyukiOOYAMA, Nobuyuki
    • C21B5/00C21B7/00C21B7/16F27B1/16F27D7/02
    • C21B5/003C21B5/00C21B5/001C21B7/00C21B7/16C21B7/163C21B9/10C21B2005/005F27B1/16F27B7/02F27D7/02
    • To provide a method for operating a blast furnace with which the combustion efficiency of a solid fuel, such as pulverized coal, is improved, thereby making it possible to improve productivity and reduce CO 2 emissions. Pulverized coal and LNG are blown from an upstream lance 4 configured by a double tube, and oxygen is blown from a downstream lance 6 on the downstream side in a hot air blast direction, so that oxygen used for preceding combustion of the LNG is supplied from the downstream lance 6, and the pulverized coal whose temperature has been increased by the combustion of the LNG is combusted along with the supplied oxygen. When a direction perpendicular to the hot air blast direction is designated as 0°, and a downstream direction and an upstream direction therefrom in the hot air blast direction are designated as positive and negative, respectively, a blowing direction of the oxygen from the downstream lance 6 with respect to the blast direction ranges from -30° to +45°, and a blowing position of the oxygen from the downstream lance 6 with reference to a position at which the upstream lance 4 is inserted into a blast pipe 2 ranges from 160° to 200° in terms of a blast pipe circumferential direction angle.
    • 本发明提供一种高炉的运转方法,提高粉煤等固体燃料的燃烧效率,从而可以提高生产率并减少二氧化碳的排放量。 粉煤和LNG从由双管构成的上游喷枪4喷出,从热风喷出方向的下游侧的下游侧喷枪6吹出氧气,从而供给用于LNG之前的燃烧的氧气 下游喷管6和通过LNG的燃烧而升温的煤粉与供给的氧一起燃烧。 当将与热风喷出方向正交的方向设为0°,将热风喷出方向上的下游方向和上游方向分别设为正方向和负方向时,将来自下游喷枪的氧的吹出方向 6相对于喷射方向的范围为-30°至+ 45°,并且参考上游喷枪4插入喷射管2中的位置,来自下游喷枪6的氧气的喷射位置范围从160° 以喷管周向角度计为200°〜200°。
    • 86. 发明公开
    • METHOD FOR OPERATING BLAST FURNACE
    • 操作高炉的方法
    • EP3266882A1
    • 2018-01-10
    • EP16758612.2
    • 2016-02-22
    • JFE Steel Corporation
    • MURAO, AkinoriYAMAMOTO, NaokiKAWASHIMA, TomoyukiOOYAMA, Nobuyuki
    • C21B5/00C21B7/00C21B7/16F27B1/16F27D7/02
    • C21B5/003C21B5/00C21B5/001C21B7/00C21B7/16C21B7/163C21B2005/005F23L15/04F27B1/16F27D7/02F27D17/00Y02P10/283
    • To provide a method for operating a blast furnace with which the combustion efficiency of a solid fuel, such as pulverized coal, is improved, thereby making it possible to improve productivity and reduce CO 2 emissions. Pulverized coal and oxygen are blown from an upstream lance 4 configured by a double tube, and LNG is blown from a downstream lance 6 on the downstream side in a hot air blast direction, so that oxygen to be used for combustion of the LNG is supplied from the upstream lance 4, and the pulverized coal whose temperature has been increased by the combustion of the LNG is combusted along with the supplied oxygen or oxygen in an air blast. When a direction perpendicular to the hot air blast direction is designated as 0°, and a downstream direction and an upstream direction therefrom in the hot air blast direction are designated as positive and negative, respectively, a blowing direction of the LNG from the downstream lance 6 with respect to the blast direction ranges from -30° to +45°, and a blowing position of the LNG from the downstream lance 6 with reference to a position at which the upstream lance 4 is inserted into a blast pipe 2 ranges from 160° to 200° in terms of a blast pipe circumferential direction angle.
    • 本发明提供一种高炉的运转方法,提高粉煤等固体燃料的燃烧效率,从而可以提高生产率并减少二氧化碳的排放量。 粉煤和氧气从由双管构成的上游喷枪4喷出,LNG从热风喷出方向下游侧的下游喷枪6喷出,供给用于LNG燃烧的氧气 来自上游喷枪4,并且通过LNG的燃烧而温度已经升高的煤粉与所供应的氧气或氧气一起在鼓风中燃烧。 当将与热风喷出方向垂直的方向设为0°,将热风喷出方向的下游方向和上游方向分别设为正和负时,将LNG从下游喷出的方向 6相对于喷射方向的范围为-30°至+ 45°,且相对于上游喷枪4插入喷射管2的位置,来自下游喷枪6的LNG的喷射位置范围从160 以喷管周向角度计为200°〜200°。
    • 87. 发明公开
    • SHAFT FURNACE AND METHOD OF OPERATING SAME
    • SCHACHTOFEN UND VERFAHREN ZUM BETRIEB DAVON
    • EP3084011A4
    • 2017-08-30
    • EP14872378
    • 2014-12-19
    • GREDE LLC
    • CONNORS BILLWITTERS KIPP
    • C21B7/00C21B5/00C21B7/16C21B11/02C21B13/02F27B1/16F27B1/28
    • C21B5/001C21B5/006C21B7/16C21B11/02C21B13/023C21B2005/005F27B1/16F27B1/28Y02P10/143
    • A method of operating a shaft furnace includes inserting a mixture including anthracite coal and coke into a cavity defined by the furnace, and disposing a metal feedstock within the cavity. The method includes injecting natural gas at a natural gas flow rate and a first quantity of oxygen gas at a first oxygen gas flow rate into the cavity simultaneously through at least one burner. The method also includes driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate. The method also includes combusting the mixture within the cavity to produce a stack gas, melting the metal feedstock to produce a melted metal material, and monitoring the stack gas to thereby operate the shaft furnace. A shaft furnace is also disclosed.
    • 一种操作竖炉的方法包括将包含无烟煤和焦炭的混合物插入炉所限定的空腔中,并且将金属原料放置在空腔内。 该方法包括通过至少一个燃烧器同时将天然气流量的天然气和第一氧气流量的第一量的氧气注入空腔中。 该方法还包括通过至少一个喷枪将超音速氧气流量的第二数量的氧气驱动到空腔中,其中超音速氧气流量大于第一氧气流量。 该方法还包括在空腔内燃烧混合物以产生烟道气,熔化金属原料以产生熔融金属材料,并且监测烟道气以由此操作竖炉。 还公开了竖炉。
    • 90. 发明公开
    • BLAST FURNACE OPERATION METHOD
    • 高炉操作程序
    • EP2982767A4
    • 2016-03-23
    • EP14778846
    • 2014-03-27
    • JFE STEEL CORP
    • FUJIWARA DAIKIMURAO AKINORI
    • C21B7/00C21B5/00C21B7/16F27D3/16
    • C21B5/003C21B5/001C21B7/163F27B1/16F27D3/16F27D2003/169F27M2001/04
    • [Task] It is to propose a blast furnace operation method effective for attaining the improvement of the productivity and the decrease of specific consumption of a reducing material by establishing the increase of cooling ability and the improvement of combustibility without increasing the outer diameter of the lance as well as the structure of the lance used in the operation of this method. [Solution for task] A method of operating a blast furnace by blowing at least a solid reducing material and a combustible gas into the furnace through tuyeres with a lance inserted into a blowpipe, characterized in that a tube-bundle type lance obtained by bundling a plurality of blowing tubes is used and when only a solid reducing material or two kinds of a solid reducing material and a combustible gas or three kinds of a solid reducing material, a combustible gas and a gaseous reducing material is simultaneously blown into an inside of the blast furnace through a tube for blowing the solid reducing material, a tube for blowing the combustible gas and a tube for blowing the gaseous reducing material in the tube-bundle type lance, two or more tube-bundle type lances are inserted into the blowpipe to approximate their front ends to each other and blowing is performed so that the respective blowout streams interfere with each other in the blowpipe.