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WO2020022460A1 - Dispositif de traitement de gaz résiduaire de convertisseur - Google Patents

Dispositif de traitement de gaz résiduaire de convertisseur Download PDF

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Publication number
WO2020022460A1
WO2020022460A1 PCT/JP2019/029314 JP2019029314W WO2020022460A1 WO 2020022460 A1 WO2020022460 A1 WO 2020022460A1 JP 2019029314 W JP2019029314 W JP 2019029314W WO 2020022460 A1 WO2020022460 A1 WO 2020022460A1
Authority
WO
WIPO (PCT)
Prior art keywords
skirt
hood
converter
exhaust gas
gas treatment
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.)
Ceased
Application number
PCT/JP2019/029314
Other languages
English (en)
Japanese (ja)
Inventor
幸則 重山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to CN201980025643.2A priority Critical patent/CN112004946A/zh
Priority to KR1020207030365A priority patent/KR102388530B1/ko
Priority to JP2020532484A priority patent/JP6835295B2/ja
Publication of WO2020022460A1 publication Critical patent/WO2020022460A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/38—Removal of waste gases or dust
    • C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • F27D17/302—Constructional details of ancillary components, e.g. waste gas conduits or seals

Definitions

  • the present invention relates to a method for manufacturing a steel plant or the like, wherein a hood and a hood disposed above a converter furnace port are connected via a skirt that moves up and down with respect to the converter furnace port and the hood.
  • the present invention relates to an exhaust gas treatment device having a connection structure.
  • the left side of the element denoted by reference numeral 111 is the center (inside) of the converter, and the right side of the element denoted by reference numeral 110 corresponds to the outer peripheral side of the converter.
  • the skirt 130 is provided between a furnace port 111 of the converter 110 and a hood 120 disposed above the furnace port 111. Then, in order to prevent the intake of outside air and the emission of exhaust gas between the skirt 130 and the hood 120, the hood 120 and the water seal water 136 stored in a water seal jacket 135 integrally formed with the skirt 130 are provided.
  • the partition tube 126 installed on the fixed floor 125 integrally formed is immersed to prevent gas leakage from a gap between the skirt 130 and the hood 120.
  • the skirt 130 is provided with a driving device 134 such as a hydraulic cylinder.
  • a driving device 134 such as a hydraulic cylinder.
  • the hood 120 can be moved up and down along the outer periphery. Even if the skirt 130 moves up and down, the water seal is maintained by the partition tube 126, the water seal jacket 135, and the water 136. It is configured.
  • reference numeral 131 denotes a cooling water supply header that supplies cooling water for cooling the skirt 130
  • reference numeral 132 denotes a cooling water drain header that drains the cooling water.
  • Reference numeral 121 denotes a cooling water supply header for cooling the hood 120.
  • Patent Literatures 1-3 for the purpose of preventing dust, slag, and metal that have entered the water seal jacket 135 from being discharged, solidified, and prevented from entering.
  • the seal structure of the skirt in the converter exhaust gas treatment facility disclosed in Patent Document 1 includes a water-cooled skirt without a water seal jacket.
  • the seal structure includes a hood above a converter mouth, a seal floor projecting outward from the hood, a water-cooled or fire-resistant cylindrical wall hanging from the seal floor, and a sliding wall.
  • a cylindrical sealing plate provided at an upper end of the skirt with a movable gap therebetween, and the cylindrical wall and the cylindrical sealing plate seal between the skirt and the hood.
  • the gap between the cylindrical wall and the cylindrical seal plate is preferably as small as possible, and it is said that the height of the contact surface is preferably 200 mm or more.
  • Patent Document 2 a nozzle for injecting cleaning water containing gas bubbles into the seal jacket is disposed at the bottom of the seal jacket, and a swirling flow is formed in the seal water by water or a gas ejection nozzle, A method has been proposed in which a gas is blown into the seal water and stirred to wash away dust and slag to prevent the accumulation thereof.
  • the horizontal distance from the furnace mouth edge of the converter to the pitch circle of the skirt water pipe wall is 400 mm or more and 500 mm or less, and the lower end of the water pipe of the hood is smaller than the line connecting the furnace mouth and the inner upper end of the seal jacket.
  • Patent Document 1 described above, there is a possibility that the skirt body may not be able to move up and down due to the insertion of the metal or slag into the gap between the cylindrical wall and the cylindrical seal plate, or the thermal deformation of the non-water-cooled cylindrical seal plate. there were. Further, there is a problem such as poor durability, and at present, it has not been put to practical use. Further, in Patent Literature 2, the effect is not sufficient, and the operation of the converter must be periodically stopped to clean the seal jacket, resulting in a decrease in productivity. Further, in Patent Document 3, it is not a method to eliminate the accumulation of dust on the bottom of the seal jacket, so that the accumulated dust needs to be cleaned.
  • the water-sealing type sealing method has a problem that the accumulation of dust and the like in the seal jacket cannot be prevented, and the productivity must be reduced due to the cleaning of the seal jacket.
  • sealing methods other than the water sealing method have not yet been put into practical use due to problems such as durability.
  • the present invention has been made in view of the above-described situation, and has excellent durability, and is capable of stable up-and-down movement of a skirt without being affected by dust, slag, metal, and the like. It is an object of the present invention to provide a converter exhaust gas treatment device capable of saving labor and improving productivity.
  • the present inventors have studied diligently, and as a result of flow analysis of the gas flow discharged from the converter mouth, without providing a seal structure between the hood and the skirt, the hood and Even if a gap is provided between the hood and the inside of the hood to communicate with the outside air, the furnace port pressure is controlled to the same pressure as the outside air pressure or a positive pressure near the outside air pressure, and the converter furnace port, the hood and the skirt
  • the furnace port pressure is controlled to the same pressure as the outside air pressure or a positive pressure near the outside air pressure, and the converter furnace port, the hood and the skirt
  • a converter exhaust gas treatment apparatus has a hood disposed above a converter furnace opening, and the converter furnace disposed below the hood.
  • a converter exhaust gas treatment device provided with a skirt that can move up and down with respect to a mouth, wherein the hood has a lower end on an inner wall surface when viewed from above, that is, when viewed from above a center line of the hood.
  • the skirt is located outside the opening edge of the furnace opening, and the skirt is arranged so that the upper end thereof surrounds the lower end of the hood.
  • the converter exhaust gas treatment apparatus according to the present invention is characterized in that the minimum width of the gap is in a range of 30 mm or more and 70 mm or less.
  • the structure between the hood and the skirt is not provided with a seal mechanism and has an open structure. , Slag, metal, and the like, and there is no durability problem unlike other sealing methods.
  • a lower end of an inner wall surface thereof is disposed outside an opening edge of the converter furnace port in a top view, and an upper end of the skirt is located outside a lower end of the hood.
  • a gap is provided between the hood and the skirt so as to communicate between the inside of the hood and outside air. This gap is provided so that the minimum distance between the hood and the skirt is 30 mm or more and 70 mm or less.
  • an overlap length of the hood and the skirt is in a range of 135 mm or more and 400 mm or less.
  • the vertical overlapping length of the hood and the skirt is in a range of 135 mm or more and 400 mm or less, suction of outside air and ejection of exhaust gas between the skirt and the hood are more sufficiently suppressed. It is possible to do.
  • an inclined surface portion having an inclination angle equal to or larger than a repose angle of dust generated at the time of oxygen refining of hot metal of the converter is formed on the outer peripheral surface of the skirt. .
  • the skirt includes a skirt body and a refractory construction body disposed on an outer peripheral side of the skirt body.
  • the skirt body and the refractory construction body provided on the outer peripheral side of the skirt body are provided, it is possible to suppress thermal deterioration of the skirt body by the refractory construction body.
  • the skirt body and the refractory construction body have a divided structure.
  • the skirt body and the refractory construction body are divided, the refractory construction body can be prevented from being damaged even when the skirt body thermally expands.
  • the skirt includes a skirt body and a water-cooled structure disposed on an outer peripheral side of the skirt body.
  • the skirt body and the water-cooling structure provided on the outer peripheral side of the skirt body are provided, the skirt body can be sufficiently cooled by the water-cooling structure, and the thermal deterioration of the skirt body is suppressed. Becomes possible.
  • the skirt body and the water-cooled structure have a divided structure.
  • the skirt main body and the water-cooled structure are divided, even if the skirt main body thermally expands, it is possible to prevent the refractory construction body from being damaged.
  • FIG. 1 shows a schematic configuration diagram of a converter exhaust gas treatment apparatus 1 according to the present embodiment.
  • the converter exhaust gas treatment apparatus 1 includes a hood 20 located above the converter 10, a skirt 30 for connecting the converter 10 and the hood 20 in a sealed state, and an exhaust gas for cooling the exhaust gas discharged from the converter 10.
  • the apparatus includes a cooler 2, a primary dust collector 3 for removing dust from cooled exhaust gas, and a secondary dust collector 4.
  • Various gas treatment devices are provided downstream of the secondary dust collector 4.
  • the secondary dust collector 4 is provided with a damper 5 for controlling a furnace port pressure in the hood 20.
  • the furnace port pressure is measured using a pressure detection end 23. In FIG. 2, the pressure detecting end 23 is provided in the hood 20, but may be provided in the exhaust gas cooler 2.
  • FIG. 2 shows a connection structure between a hood and a skirt in a converter exhaust gas treatment apparatus according to an embodiment of the present invention.
  • the left side corresponds to the central portion (inside) of the converter
  • the right side corresponds to the outer peripheral side of the converter.
  • the connection structure between the hood and the skirt in the converter exhaust gas treatment device according to the present embodiment includes, above the furnace port 11 of the converter 10 that supplies oxygen gas and performs refining of hot metal, A hood 20 of the converter exhaust gas treatment device 1 for collecting exhaust gas generated from the converter 10 by refining is installed.
  • the hood 20 has a water cooling structure, and is internally cooled by cooling water supplied from a cooling water supply header 21.
  • the cooling water drain header of the hood 20 is installed at the top of the hood 20, but is omitted in FIG.
  • the hood 20 and the seal floor 8 seal the CO gas through a sand seal, but are omitted in FIG. Cooling water to the water pipe of the skirt 30 is supplied through a CO gas seal portion of the seal floor 8 via a water supply / drain pipe (not shown).
  • a skirt 30 that can move up and down is provided between the furnace opening 11 and the hood 20 over the entire outer peripheral direction of the hood 20.
  • a cooling water supply header 31 is provided at the lower end of the skirt 30 in the vertical direction, and a cooling water drain header 32 is provided at the upper end of the skirt 30 in the vertical direction.
  • the cooling water supply header 31 is connected to a cooling water supply pipe (not shown), and the cooling water discharge header 32 is connected to a cooling water discharge pipe (not shown).
  • the skirt 30 is internally cooled by the cooling water supplied through the cooling water supply pipe, and the cooling water after cooling the skirt 30 is drained through the cooling water drain pipe.
  • the skirt 30, the cooling water supply pipe and the cooling water drain pipe are integrally formed, and the skirt 30, the cooling water supply pipe and the cooling water drain pipe are all composed of a driving device such as an electric motor or a hydraulic cylinder (not shown). Thereby, the skirt 30 is attached to the gap between the hood 20 and moves up and down above the furnace opening 11.
  • no seal mechanism is provided between the hood 20 and the skirt 30, and is opened from the furnace port 11 side to an outer space (hereinafter, simply referred to as “outside air”) with the hood 20 and the skirt 30 as a boundary.
  • a gap having a minimum width of 30 mm or more and 70 mm or less is provided between the hood 20 and the skirt 30.
  • the vertical overlap length L from the lower end 20a of the hood 20 to the upper end 30b of the skirt 30 is in a range of 135 mm or more and 400 mm or less.
  • the skirt 30 includes a skirt body 35 and a refractory construction 36 disposed on the outer peripheral side of the skirt body 35.
  • the refractory construction body 36 is mounted on the support structure 34 of the skirt 30.
  • the refractory construction body 36 disposed on the outer peripheral side of the skirt 30.
  • the dust generated in the converter 10 and the flying objects from the converter 10 are formed on an inclined surface at an angle at which it is difficult for the dust to accumulate. Adhesion and accumulation of flying objects are prevented.
  • the refractory construction body 36 can be formed by, for example, pouring or spraying an alumina-based irregular refractory or a magnesia-based irregular refractory.
  • the skirt 30 includes the skirt body 35 and the refractory construction body 36, and has a structure in which the skirt body 35 and the refractory construction body 36 are divided. I have.
  • the high-temperature high-dust exhaust gas mainly composed of carbon monoxide gas generated in the oxygen refining process of the hot metal as follows. Collect.
  • the furnace port pressure measured via the pressure detecting end 23 is changed to the damper of the secondary dust collector 4 of the converter exhaust gas treatment device 1. 5 or a furnace port pressure control device (not shown) controls the pressure of the outside air to a positive pressure of 0 Pa or more and about 30.0 Pa or less, so that the gap between the furnace port 11 and the skirt 30 and the hood 20 Emission of exhaust gas generated from the converter 10 through the gap between the skirts 30 is minimized, and high-concentration CO gas can be recovered.
  • the hood 20 when the inside of the hood 20 has a positive pressure in the range of 0 Pa to about 30.0 Pa with respect to the pressure of the outside air, the hood 20 The ejector effect generated in the gap between the hood 30 and the pressure in the hood 20 is substantially balanced, so that the ejection from the gap between the hood 20 and the skirt 30 is minimized.
  • the inner wall surface of the hood 20 is located on the outer peripheral side of the opening edge of the converter furnace port 11, and the skirt 30 is arranged so as to surround the outer peripheral side of the hood 20.
  • the minimum distance between the hood 20 and the skirt 30 is more than 70 mm, a part of the exhaust gas rising from the furnace port 11 easily flows out of the gap between the hood 20 and the skirt 30 to the outside air.
  • the structure is open. It is not affected by dust, slag, metal, and the like as in the water sealing method, and does not have a durability problem as in other sealing methods.
  • the overlap length between the lower end 20a of the hood 20 and the upper end 30b of the skirt 30 is in a range of 135 mm or more and 400 mm or less.
  • the outer peripheral wall of the hood 20 is formed substantially vertically, and the skirt 30 moves up and down in parallel along the outer peripheral wall of the hood 20.
  • the overlap length between the lower end 20a of the hood 20 and the upper end 30b of the skirt 30 is determined when the skirt is at the lowermost position. It is preferable that the thickness be 135 mm or more and 400 mm or less in the vertical direction.
  • the outer peripheral surface of the skirt 30 has an inclined surface having an inclination angle equal to or larger than a limit angle (referred to as a “dust repose angle”) at which dust generated during oxygen refining of the hot metal in the converter 10 slides.
  • a limit angle referred to as a “dust repose angle”
  • the skirt 30 when the skirt 30 includes the skirt body and the refractory construction body 36 disposed on the outer peripheral side of the skirt body, the skirt body is formed by the refractory construction body 36. Can be suppressed from being thermally degraded. Further, in the present embodiment, in the case where the skirt body and the refractory construction body 36 are divided, even if the skirt body is thermally expanded, it is possible to suppress the refractory construction body 36 from being damaged. .
  • the converter exhaust gas treatment apparatus As described above, the converter exhaust gas treatment apparatus according to the present embodiment, which is an embodiment of the present invention, has been specifically described. However, the present invention is not limited to this, and does not depart from the technical idea of the present invention. It can be changed as appropriate.
  • the refractory construction body has been described as being disposed on the outer peripheral side of the skirt, but is not limited thereto, and instead of the refractory construction body, a water-cooled structure is disposed. Is also good. Even in the case where the water-cooled structure is provided, it is preferable to have an inclined surface having an inclination angle equal to or larger than the repose angle of dust generated during oxygen refining. In addition, it is preferable that the skirt body and the water-cooled structure are divided. Furthermore, it may be configured only with the skirt body composed of the water-cooled pipe without disposing the refractory construction body and the water-cooled structure.
  • the “exhaust gas emission amount” in Table 1 indicates the amount of exhaust gas collected in the gas cooler 2 (m 3 N / h) (Z), the amount of exhaust gas (X) (m 3 ) blown out from the gap between the furnace port 11 and the skirt 30.
  • N / h) and the amount of outside air sucked from the gap between the hood 20 and the skirt 30 or the amount of discharged exhaust gas (Y) (m 3 N / h) are calculated by analysis, respectively, and are calculated by the following equation 1. Value.
  • "+" indicates ejection and "-" indicates suction.
  • connection structure between the hood and the skirt in Comparative Examples 1 and 2 (hereinafter, the “connection structure between the hood and the skirt” is simply referred to as “connection structure”)
  • the inner diameter of the converter furnace port is smaller than the inner diameter of the lower end of the hood.
  • the minimum value of the gap between the skirt and the skirt is less than 30 mm.
  • the amount of outside air sucked through the gap between the hood 20 and the skirt 30 is large, and when the furnace port pressure is set to 25.5 Pa, the amount (%) of exhaust gas discharged becomes -5.0%. Reach.
  • connection structures of Examples 1 and 2 of the present invention even when the furnace port pressure is set to 25.5 Pa, the amount (%) of exhaust gas blown out remains less than -5.0%.
  • the inside diameter of the converter furnace opening is smaller than the inside diameter of the lower end of the hood, and the minimum value of the gap between the hood and the skirt is more than 70 mm.
  • the amount of exhaust gas discharged from the gap between the hood 20 and the skirt 30 is large, and when the furnace port pressure is set to 25.5 Pa, the amount (%) of exhaust gas discharged exceeds 5.0%. I do.
  • the connection structures of Examples 6 and 7 of the present invention even when the furnace port pressure is set to 25.5 Pa, the amount (%) of discharged exhaust gas remains less than 5.0%.
  • Example 1-7 of the present invention in which the inside diameter of the converter furnace port is smaller than the inside diameter of the lower end of the hood, the minimum distance between the hood and the skirt is set to 30 mm to 70 mm, so that the hood 20 The amount of exhaust gas discharged from the gap between the skirt 30 and the skirt 30 is suppressed to less than ⁇ 5.0%.
  • the connection structures of Examples 3 to 5 of the present invention by changing the furnace port pressure, the inflow of outside air into the converter is changed to the outflow of gas in the converter, and the discharge amount of exhaust gas is reduced. Since it is less than ⁇ 2.0%, the effect of the present invention utilizing the aerodynamic action between the flow of the exhaust gas flowing into the exhaust gas cooler from the furnace port via the hood and the gap between the hood and the skirt is achieved.
  • the minimum distance between the hood and the skirt is set to 30 mm to 70 mm, so that the hood 20 The amount of exhaust gas discharged from the gap between the skirt 30 and the skirt 30 is suppressed to less than ⁇ 5.
  • the present invention is installed between the converter furnace opening and the hood above the furnace opening, and the outflow of the exhaust gas to the outside air and the release of the outside air into the exhaust gas during the oxygen refining of the hot metal.
  • the structure of the gap between the skirt and the hood which is installed to prevent entanglement, has a durable and stable skirt up and down movement that is not affected by dust, slag, metal, etc., and saves maintenance. It has been confirmed that a skirt structure without a water seal can be provided in order to improve productivity.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

L'invention concerne un dispositif de traitement de gaz résiduaire de convertisseur qui présente une excellente durabilité, est capable de déplacer de manière stable une jupe vers le haut et vers le bas sans être affecté par la poussière, les scories, le métal nu, etc., et permet d'économiser du travail de maintenance et d'améliorer la productivité. Le dispositif de traitement de gaz résiduaire de convertisseur est destiné à être connecté entre une bouche de convertisseur (11) et un capot (20) disposé au-dessus de la bouche de convertisseur (11) par l'intermédiaire d'une jupe (30) pour être déplacé vers le haut et vers le bas par rapport à la bouche de convertisseur (11) et au capot (20). Le dispositif a une configuration dans laquelle le fond d'une surface de paroi interne du capot (20) est disposé à l'extérieur d'un bord d'ouverture de la bouche de convertisseur (11), la jupe (30) est disposée de sorte qu'une partie supérieure de celle-ci entoure une partie inférieure du capot (20), et un espace ouvert est formé entre le capot (20) et la jupe (30), un espace ayant une largeur minimale de 30 mm à 70 mm étant disposé entre le capot (20) et la jupe (30).
PCT/JP2019/029314 2018-07-25 2019-07-25 Dispositif de traitement de gaz résiduaire de convertisseur Ceased WO2020022460A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980025643.2A CN112004946A (zh) 2018-07-25 2019-07-25 转炉排气处理装置
KR1020207030365A KR102388530B1 (ko) 2018-07-25 2019-07-25 전로 배기 가스 처리 장치
JP2020532484A JP6835295B2 (ja) 2018-07-25 2019-07-25 転炉排ガス処理装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018139176 2018-07-25
JP2018-139176 2018-07-25

Publications (1)

Publication Number Publication Date
WO2020022460A1 true WO2020022460A1 (fr) 2020-01-30

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Application Number Title Priority Date Filing Date
PCT/JP2019/029314 Ceased WO2020022460A1 (fr) 2018-07-25 2019-07-25 Dispositif de traitement de gaz résiduaire de convertisseur

Country Status (5)

Country Link
JP (1) JP6835295B2 (fr)
KR (1) KR102388530B1 (fr)
CN (1) CN112004946A (fr)
TW (1) TW202030335A (fr)
WO (1) WO2020022460A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116219108A (zh) * 2023-03-09 2023-06-06 河北北冶管道设备有限公司 一种转炉汽化冷却烟道的下料口装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205810A (en) * 1962-09-04 1965-09-14 Inland Steel Co Adjustable hood construction for metallurgical furnace
JPS4872008A (fr) * 1971-09-09 1973-09-28
GB1435199A (en) * 1973-03-29 1976-05-12 Baum Verfahrenstechnik Oxygen converters
JPS5451906A (en) * 1977-10-01 1979-04-24 Nippon Steel Corp Method of cooling heat indulating pipe at lower portion of skirt in converter exhaust gas combustible gas recovery device
DE3106791A1 (de) * 1981-02-24 1982-09-09 Oschatz Gmbh, 4300 Essen Hoehenverstellbarer haubenring zwischen einem industrieofen, insbesondere konverter, und einer kaminhaube
JP2007302932A (ja) * 2006-05-10 2007-11-22 Jp Steel Plantech Co 転炉排ガス処理設備におけるスカートのシール構造

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Publication number Priority date Publication date Assignee Title
JPS6033161B2 (ja) * 1981-04-28 1985-08-01 川崎重工業株式会社 転炉排ガス処理装置におけるスカ−トの乾式シ−ル装置
JP4882449B2 (ja) 2006-03-29 2012-02-22 Ｊｆｅスチール株式会社 転炉排ガス処理設備のダスト除去方法および装置
CN2910951Y (zh) * 2006-06-12 2007-06-13 江阴海陆冶金设备制造有限公司 膨胀结构式炼钢转炉用汽化冷却烟道
JP6011223B2 (ja) 2012-10-09 2016-10-19 Ｊｆｅスチール株式会社 転炉のスカートシール装置及びこのスカートシール装置を用いた排ガス処理方法
CN203212597U (zh) * 2013-04-11 2013-09-25 宝山钢铁股份有限公司 带反冲洗机构的转炉群罩水封筒

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205810A (en) * 1962-09-04 1965-09-14 Inland Steel Co Adjustable hood construction for metallurgical furnace
JPS4872008A (fr) * 1971-09-09 1973-09-28
GB1435199A (en) * 1973-03-29 1976-05-12 Baum Verfahrenstechnik Oxygen converters
JPS5451906A (en) * 1977-10-01 1979-04-24 Nippon Steel Corp Method of cooling heat indulating pipe at lower portion of skirt in converter exhaust gas combustible gas recovery device
DE3106791A1 (de) * 1981-02-24 1982-09-09 Oschatz Gmbh, 4300 Essen Hoehenverstellbarer haubenring zwischen einem industrieofen, insbesondere konverter, und einer kaminhaube
JP2007302932A (ja) * 2006-05-10 2007-11-22 Jp Steel Plantech Co 転炉排ガス処理設備におけるスカートのシール構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116219108A (zh) * 2023-03-09 2023-06-06 河北北冶管道设备有限公司 一种转炉汽化冷却烟道的下料口装置
CN116219108B (zh) * 2023-03-09 2023-08-08 河北北冶管道设备有限公司 一种转炉汽化冷却烟道的下料口装置

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Publication number Publication date
KR20200132982A (ko) 2020-11-25
TW202030335A (zh) 2020-08-16
JPWO2020022460A1 (ja) 2020-12-17
JP6835295B2 (ja) 2021-02-24
CN112004946A (zh) 2020-11-27
KR102388530B1 (ko) 2022-04-20

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