IN2014KN01261A - - Google Patents

Info

Publication number
IN2014KN01261A
IN2014KN01261A IN1261KON2014A IN2014KN01261A IN 2014KN01261 A IN2014KN01261 A IN 2014KN01261A IN 1261KON2014 A IN1261KON2014 A IN 1261KON2014A IN 2014KN01261 A IN2014KN01261 A IN 2014KN01261A
Authority
IN
India
Prior art keywords
pulverized coal
double walled
lance
blown
pipe
Prior art date
Application number
Inventor
Daiki Fujiwara
Akinori Murao
Shiro Watakabe
Original Assignee
Jfe 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=48669724&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IN2014KN01261(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP2011279954A external-priority patent/JP5923967B2/en
Application filed by Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of IN2014KN01261A publication Critical patent/IN2014KN01261A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • F27D2003/169—Construction of the lance, e.g. lances for injecting particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)
  • Blast Furnaces (AREA)

Abstract

2A double walled pipe is used as a lance (4) for blowing in a fuel through a tuyere (3) whereby pulverized coal is blown in from the inner pipe (21) of the double walled lance (4) and oxygen is blown in from the outer pipe (22) of the double walled lance (4). Notches (23) are provided on the blowing side tip section of the inner pipe (21) of the double walled lance (4) and the oxygen concentration of a gas that comprises the pulverized coal carrier gas and the gas which is blown in from the outer pipe is set to 35 vol% or higher. Thus the burning temperature can be increased even during a high pulverized coal ratio operation at a volatile pulverized coal content of 25 mass% or less and a pulverized coal ratio of 150 kg/t or higher. Consequently emission of CO can be reduced and by setting the oxygen concentration to lower than 70 vol% the oxygen consumption can be minimized. In addition because multiple notches (23) are provided at equal intervals in the circumferential direction of the inner pipe (21) of the double walled lance (4) the burning efficiency is further improved.
IN1261KON2014 2011-12-21 2012-03-01 IN2014KN01261A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011279954A JP5923967B2 (en) 2010-12-27 2011-12-21 Blast furnace operation method
PCT/JP2012/055893 WO2013094230A1 (en) 2011-12-21 2012-03-01 Blast furnace operation method

Publications (1)

Publication Number Publication Date
IN2014KN01261A true IN2014KN01261A (en) 2015-10-16

Family

ID=48669724

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1261KON2014 IN2014KN01261A (en) 2011-12-21 2012-03-01

Country Status (8)

Country Link
EP (3) EP2796566B1 (en)
KR (1) KR101629123B1 (en)
CN (1) CN104024440B (en)
AU (1) AU2012355194B2 (en)
BR (1) BR112014015336B1 (en)
IN (1) IN2014KN01261A (en)
TW (1) TWI487791B (en)
WO (1) WO2013094230A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014216336A1 (en) * 2014-08-18 2016-02-18 Küttner Holding GmbH & Co. KG Process for injecting replacement reductants into a blast furnace
CN110714106B (en) * 2019-10-30 2020-12-29 沈忠凡 Blast furnace optimization smelting method of high-titanium type vanadium titano-magnetite
US20220403477A1 (en) * 2019-11-29 2022-12-22 Nippon Steel Corporation Blast furnace operation method

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62192509A (en) * 1986-02-17 1987-08-24 Kobe Steel Ltd Method for blowing pulverized carbon into blast furnace
JP2986244B2 (en) * 1991-05-22 1999-12-06 川崎製鉄株式会社 Pulverized coal injection lance for blast furnace
JP2994141B2 (en) * 1992-06-16 1999-12-27 川崎製鉄株式会社 How to inject powder fuel into the blast furnace
ES2123018T3 (en) 1992-07-01 1999-01-01 Wurth Paul Sa DEVICE FOR INJECTION OF SPRAYED COAL IN A HIGH-FURNACE POT.
JPH06100912A (en) * 1992-09-22 1994-04-12 Kawasaki Steel Corp Lance for blowing powdery fuel for blast furnace
LU88553A1 (en) 1994-11-04 1996-07-15 Wurth Paul Sa Process for burning plastic waste in a blast furnace
JPH08157916A (en) * 1994-12-01 1996-06-18 Nkk Corp Blowing of pulverized fine coal into blast furnace and lance for blowing pulverized fine coal
JPH08260010A (en) * 1995-03-24 1996-10-08 Nippon Steel Corp Operation for blowing large quanty of pulverized coal in blast furnace
JP3493937B2 (en) * 1997-03-14 2004-02-03 Ｊｆｅスチール株式会社 How to blow pulverized coal into the blast furnace
CN1093882C (en) * 1998-08-13 2002-11-06 浦项综合制铁株式会社 Pulverized coal injecting apparatus
JP3450205B2 (en) 1998-12-25 2003-09-22 株式会社神戸製鋼所 How to inject auxiliary fuel into the blast furnace
JP3620407B2 (en) * 2000-05-16 2005-02-16 Ｊｆｅスチール株式会社 Operation method of pulverized coal injection to blast furnace
JP2002047359A (en) 2000-08-01 2002-02-12 C I Kasei Co Ltd Antibiotic polystylene heat shrinkable film
KR100431868B1 (en) * 2000-12-13 2004-05-20 주식회사 포스코 lance for supplying fine coal and method for using its
JP4074467B2 (en) 2002-03-29 2008-04-09 新日本製鐵株式会社 Method for improving combustibility of low volatile pulverized coal in blast furnace
TWI277654B (en) * 2005-01-31 2007-04-01 Jfe Steel Corp Method for operating blast furnace
LU91264B1 (en) * 2006-07-12 2008-01-14 Wurth Paul Sa Pulverized coal injection lance
CN201241161Y (en) * 2008-08-19 2009-05-20 山东源泽工贸有限公司 High-efficiency combined coal injection gun
CN201561440U (en) * 2009-11-25 2010-08-25 钢铁研究总院 Oxygen coal spray gun
CN102268496B (en) * 2011-08-01 2013-01-02 张昭贵 Method and device for intensifying combustion of injected pulverized coal in tuyere of blast furnace

Also Published As

Publication number Publication date
EP4283233A1 (en) 2023-11-29
WO2013094230A1 (en) 2013-06-27
BR112014015336B1 (en) 2019-05-14
CN104024440A (en) 2014-09-03
EP3421618A1 (en) 2019-01-02
BR112014015336A8 (en) 2017-06-13
AU2012355194B2 (en) 2015-09-03
CN104024440B (en) 2016-01-20
AU2012355194A1 (en) 2014-07-24
KR20140109964A (en) 2014-09-16
EP3421618B1 (en) 2023-09-13
TW201326405A (en) 2013-07-01
EP2796566A4 (en) 2015-12-02
KR101629123B1 (en) 2016-06-09
EP2796566B1 (en) 2018-08-29
BR112014015336A2 (en) 2017-06-13
TWI487791B (en) 2015-06-11
EP2796566A1 (en) 2014-10-29

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