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1. 发明公开

EP4217513A1 REDUCING GAS INJECTION SYSTEM 审中-实审
公开(公告)号：EP4217513A1
公开(公告)日：2023-08-02
申请号：EP21778509.6
申请日：2021-09-27
申请人： Paul Wurth S.A.
发明人： MAGGIOLI, Nicolas , KINZEL, Klaus Peter , KASS, Gilles
IPC分类号： C21B7/16 , F27B1/16 , F27D3/16

2. 发明公开

EP4217512A1 BLAST FURNACE WITH SHAFT FEEDING OF HOT PROCESS GAS 审中-实审
公开(公告)号：EP4217512A1
公开(公告)日：2023-08-02
申请号：EP21778163.2
申请日：2021-09-27
申请人： Paul Wurth S.A.
发明人： MAGGIOLI, Nicolas , KASS, Gilles , KINZEL, Klaus Peter
IPC分类号： C21B7/16 , F27B1/16 , F27D3/16

3. 发明公开

EP3839074A1 BLAST FURNACE PLANT AND SHUTDOWN PROCESS 有权
公开(公告)号：EP3839074A1
公开(公告)日：2021-06-23
申请号：EP19218986.8
申请日：2019-12-20
申请人： Danieli Corus BV
发明人： de Boer, Riekelt , Geerdes, Hendrik Adriaan Marius , van Laar, Reinoud Jacobus , Park, Jong Sung , Lee, Ho Young
IPC分类号： C21B5/00 , C21B7/00 , C21B7/16 , C21B7/22 , F27B1/18 , F27D17/00
摘要： Blast furnace plant (1) and shutdown process for such a blast furnace plant (1). The blast furnace plant comprises a blast furnace (2) and a gas cleaning section (6) for cleaning gas from the blast furnace. Clean gas is released via a clean gas vent line (11) downstream of the gas cleaning section.

4. 发明授权

EP3669008B1 EXTRACTION DEVICE FOR A TUYERE PART 有权
公开(公告)号：EP3669008B1
公开(公告)日：2021-04-07
申请号：EP18745983.9
申请日：2018-08-02
发明人： THINNES, Claude
IPC分类号： C21B7/16 , F27B1/16

5. 发明授权

EP2193212B1 TUYERE FOR MANUFACTURING MOLTEN IRON AND METHOD FOR INJECTING GAS USING THE SAME 有权转让
公开(公告)号：EP2193212B1
公开(公告)日：2019-04-17
申请号：EP08828480.7
申请日：2008-08-29
申请人： POSCO
发明人： CHO, Il-Hyun , KIM, Do-Seueng , BAE, Jin-Chan
IPC分类号： C21B11/00 , C21B7/16 , C21B13/00 , C21B13/14

6. 发明授权

EP3266883B1 BLAST FURNACE OPERATING METHOD 有权
公开(公告)号：EP3266883B1
公开(公告)日：2019-04-03
申请号：EP16758613.0
申请日：2016-02-22
申请人： JFE Steel Corporation
发明人： YAMAMOTO, Naoki , MURAO, Akinori , KAWASHIMA, Tomoyuki , OOYAMA, Nobuyuki
IPC分类号： C21B9/10 , C21B5/00 , C21B7/00 , C21B7/16 , F27B1/16 , F27D7/02 , F27B7/02

7. 发明授权

EP3256610B1 OPTICAL MONITORING SYSTEM FOR OBSERVING INTERNAL CONDITIONS IN THE TUYERE ZONE OF A BLAST FURNACE 有权
公开(公告)号：EP3256610B1
公开(公告)日：2018-05-02
申请号：EP16709288.1
申请日：2016-02-09
申请人： Paul Wurth S.A.
发明人： TOCKERT, Paul , JUNG, Benoît
IPC分类号： C21B7/16 , C21B7/24 , C21C5/46 , F27D21/02
CPC分类号： F27D21/02 , C21B7/163 , C21B7/24 , C21C5/4673 , F27D2021/026 , G01N21/954
摘要： The invention relates to an optical monitoring system (26) for monitoring operating conditions in a tuyere zone of a blast furnace. This system comprises a light deflecting device (40) with a peep sight (28) arranged in a first face (46) of the light deflecting device (40) and an optical sensor (30) arranged in a second face (48) of the light deflecting device (40). A light deflector (41) is arranged within the light deflecting device (40) for directing incident light from the tuyere zone towards the peep sight (28) and towards the optical sensor (30). The light deflecting device (40) comprises a housing (56) with a spherical body (60) rotatably arranged therein. The spherical body (60) comprises three passages: a first passage (62) which is, when the light deflecting device (40) is connected to the rear portion of the blowpipe (18), facing the tuyere for allowing incident light from the tuyere zone to enter the spherical body (60); a second passage (70) facing the peep sight (28); a third passage (72) facing the optical sensor (30). The first, second and third passages (62, 68, 72) are configured so as to meet each other within the spherical body (60). The light deflector (41) is arranged within the spherical body (60) at the intersection of the first, second and third passages (62, 68, 72). Furthermore, the light deflecting device (40) comprises an opening (76) in a third face (50) of the housing (56) for accessing the spherical body (60) for allowing rotation of the spherical body (60) within the housing (56). The spherical body (60) comprises a socket (78) facing the opening (76) in the third face (50). The opening (76) is a guiding slot (86) whose width is substantially the same as a diameter of the socket (78).

8. 发明授权

EP2982767B1 BLAST FURNACE OPERATION METHOD 有权
标题翻译：高炉操作方法
公开(公告)号：EP2982767B1
公开(公告)日：2017-05-17
申请号：EP14778846.7
申请日：2014-03-27
申请人： JFE Steel Corporation
发明人： FUJIWARA Daiki , MURAO Akinori
IPC分类号： C21B7/00 , C21B5/00 , C21B7/16 , F27D3/16 , F27B1/16
CPC分类号： C21B5/003 , C21B5/001 , C21B7/163 , F27B1/16 , F27D3/16 , F27D2003/169 , F27M2001/04
摘要： [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.
摘要翻译： [作用]在不增加喷枪外径的情况下，通过增加冷却能力和提高燃烧性，提出一种有效地提高生产率和减少还原材料比耗的高炉操作方法以及在该方法的操作中使用的喷枪的结构。 [任务的解决方案]一种高炉的操作方法，其特征在于，通过将吹入管内插入的喷枪将至少固体还原材料和可燃性气体吹入炉内，通过风口吹入炉内，其特征在于，使用多个吹管，并且当只有固体还原材料或两种固体还原材料和可燃气体或三种固体还原材料时，可燃气体和气体还原材料同时吹入高炉通过用于吹入固体还原材料的管，用于吹入可燃气体的管和用于吹入管束型喷枪中的气体还原材料的管，将两根或更多管束型喷枪插入到吹管中以将它们的前端彼此近似地进行吹风，以使各吹出气流在吹管内相互干涉。

9. 发明授权

EP2871247B1 METHOD FOR OPERATING BLAST FURNACE 有权
标题翻译：操作高炉的方法
公开(公告)号：EP2871247B1
公开(公告)日：2017-05-10
申请号：EP13813190.9
申请日：2013-06-28
申请人： JFE Steel Corporation
发明人： FUJIWARA, Daiki , MURAO, Akinori
IPC分类号： C21B7/16 , C21B5/00 , C21B7/00
CPC分类号： C21B5/003 , C21B5/00 , C21B7/163

10. 发明公开

EP2653563A4 METHOD FOR OPERATING BLAST FURNACE 有权
标题翻译： BETRIEBSVERFAHRENFÜREINEN VERBRENNUNGSOFEN
公开(公告)号：EP2653563A4
公开(公告)日：2017-03-08
申请号：EP11856085
申请日：2011-07-15
申请人： JFE STEEL CORP
发明人： FUJIWARA DAIKI , MURAO AKINORI , WATAKABE SHIRO , KITAHARA MASAYUKI
IPC分类号： C21B5/00 , C21B5/06 , C21B7/00 , C21B7/16
CPC分类号： C21B5/003 , C21B5/06 , C21B7/163 , C21B2005/005 , C21B2100/26 , C21B2100/60 , Y02P10/283
摘要： Provided is a method for operating a blast furnace in which further improvement in combustion temperature and further reduction of the specific consumption of reducing agents are possible. A double tube lance is used as a lance 4 through which reducing agents are injected into a blast furnace via a tuyere 3. By injecting a solid reducing agent such as pulverized coal 6 and an inflammable reducing agent such as an utility gas 9 through the double tube lance 4 and by setting the oxygen excess ratio of air blown to the tuyere 3 to be from 0.7 to 1.3, there is a significant increase in the temperature of the pulverized coal 6 due to the utility gas 9 which contacts O 2 contained in the blown air in first being burnt, which causes an increase in the heating rate of the pulverized coal 6 and the pulverized coal 6 being sufficiently burnt. As a result, there is a significant increase in combustion temperature, which makes it possible to reduce the specific consumption of reducing agents. At the same time, it is possible to prevent the double tube lance 4 from being deformed due to the increased temperature by setting the flow velocity at the exit of the outer tube of the double tube lance 4 to be from 20 m/sec to 120 m/sec.
摘要翻译：本发明提供一种高炉的运转方法，能够进一步提高燃烧温度，并且能够进一步降低还原剂的比耗。双管喷枪用作喷枪4，还原剂通过喷枪3通过风口3喷射到高炉中。通过双喷嘴将固体还原剂如煤粉6和可燃性还原剂如商用气体9喷射到高炉通过将喷吹到风口3的空气的氧过剩率设定为0.7〜1.3，由于接触了包含在风筒3中的O 2的市电气体9，煤粉6的温度显着上升首先吹入的空气被燃烧，这导致粉煤6和煤粉6充分燃烧的加热速率增加。结果，燃烧温度显着增加，这使得可以减少还原剂的特定消耗量。同时，通过将双管喷枪4的外管的出口处的流速设定为从20m / sec到120，可以防止由于升高的温度导致双管喷枪4变形米/秒。

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