BR112014015099A8 - method for operating a blast furnace - Google Patents

method for operating a blast furnace

Info

Publication number
BR112014015099A8
BR112014015099A8 BR112014015099A BR112014015099A BR112014015099A8 BR 112014015099 A8 BR112014015099 A8 BR 112014015099A8 BR 112014015099 A BR112014015099 A BR 112014015099A BR 112014015099 A BR112014015099 A BR 112014015099A BR 112014015099 A8 BR112014015099 A8 BR 112014015099A8
Authority
BR
Brazil
Prior art keywords
pulverized coal
blast furnace
double
proportion
walled
Prior art date
Application number
BR112014015099A
Other languages
Portuguese (pt)
Other versions
BR112014015099B1 (en
BR112014015099A2 (en
Inventor
Murao Akinori
Fujiwara Daiki
Watakabe Shiro
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
Application filed by Jfe Steel Corp filed Critical Jfe Steel Corp
Priority claimed from PCT/JP2012/055886 external-priority patent/WO2013094229A1/en
Publication of BR112014015099A8 publication Critical patent/BR112014015099A8/en
Publication of BR112014015099A2 publication Critical patent/BR112014015099A2/en
Publication of BR112014015099B1 publication Critical patent/BR112014015099B1/en

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  • Manufacture Of Iron (AREA)
  • Blast Furnaces (AREA)

Abstract

resumo patente de invenção: "método para operação de um alto-forno". método para operação de um alto-forno, em que a temperatura de combustão pode ser aumentada mesmo se a quantidade volátil de carvão pulverizado for de não mais de 25 % em massa e estiver sendo usada uma operação de uma alta proporção de carvão pulverizado, em que a proporção de carvão pulverizado é de pelo menos 150 kg/t, e, em consequência, as emissões de co2 podem ser reduzidas, por: utilização de uma lança de paredes duplas (4) para soprar combustível a partir de um alcaraviz (3); soprando o carvão pulverizado a partir da tubulação interna da lança de paredes duplas (4); soprando oxigênio a partir da tubulação externa da lança de paredes duplas (4); e tendo uma concentração de oxigênio sendo de pelo menos 35% em volume para o gás compreendendo o gás de veículo para o carvão pulverizado e o gás soprado a partir da tubulação externa. a concentração de oxigênio é de menos de 70% em volume quando a proporção de carvão pulverizado é de pelo menos 170 kg/t. uma concentração aumentada de fluxo de carvão pulverizado é evitada e a eficiência do combustível pode ser mantida.patent summary: "method for operating a blast furnace". A blast furnace operation method wherein the combustion temperature may be increased even if the volatile amount of pulverized coal is no more than 25% by mass and a high proportion of pulverized coal operation is being used. whereas the proportion of pulverized coal is at least 150 kg / t, and as a consequence, CO2 emissions can be reduced by: using a double-walled lance (4) to blow fuel from a caraway (3 ); blowing the pulverized coal from the double-walled boom inner pipe (4); blowing oxygen from the outer tubing of the double walled boom (4); and having an oxygen concentration of at least 35% by volume for gas comprising carrier gas for pulverized coal and gas blown from the outer pipe. Oxygen concentration is less than 70% by volume when the proportion of pulverized coal is at least 170 kg / t. Increased concentration of pulverized coal flow is avoided and fuel efficiency can be maintained.

BR112014015099A 2010-12-27 2012-03-01 method for operating a blast furnace BR112014015099B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2010290187 2010-12-27
JP2010290185 2010-12-27
JP2011040235 2011-02-25
JP2011279955A JP5923968B2 (en) 2010-12-27 2011-12-21 Blast furnace operation method
PCT/JP2012/055886 WO2013094229A1 (en) 2011-12-21 2012-03-01 Blast furnace operation method

Publications (3)

Publication Number Publication Date
BR112014015099A8 true BR112014015099A8 (en) 2017-06-13
BR112014015099A2 BR112014015099A2 (en) 2017-06-13
BR112014015099B1 BR112014015099B1 (en) 2018-05-08

Family

ID=47082217

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014015099A BR112014015099B1 (en) 2010-12-27 2012-03-01 method for operating a blast furnace

Country Status (2)

Country Link
JP (1) JP5923968B2 (en)
BR (1) BR112014015099B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105074014A (en) * 2013-04-03 2015-11-18 杰富意钢铁株式会社 Blast furnace operation method and lance
JP5987772B2 (en) * 2013-04-19 2016-09-07 Ｊｆｅスチール株式会社 Blast furnace operation method
JP5910567B2 (en) * 2013-04-19 2016-04-27 Ｊｆｅスチール株式会社 Blast furnace operation method
JP5987773B2 (en) * 2013-04-19 2016-09-07 Ｊｆｅスチール株式会社 Blast furnace operation method
JP5987774B2 (en) * 2013-04-19 2016-09-07 Ｊｆｅスチール株式会社 Blast furnace operation method
KR101675711B1 (en) * 2013-04-19 2016-11-11 제이에프이 스틸 가부시키가이샤 Blast furnace operation method
JP5987771B2 (en) * 2013-04-19 2016-09-07 Ｊｆｅスチール株式会社 Blast furnace operation method
JP5962611B2 (en) * 2013-08-05 2016-08-03 Ｊｆｅスチール株式会社 Blast furnace pulverized coal blowing method and blowing abnormality detection device
JP6061107B2 (en) * 2014-02-17 2017-01-18 Ｊｆｅスチール株式会社 Blast furnace operation method
CN115595389B (en) * 2022-10-25 2023-12-08 上海大学 Blast furnace hydrogen and biomass particle coupling injection system and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
JPH11315310A (en) * 1998-04-30 1999-11-16 Nkk Corp Method for blowing pulverized coal into blast furnace
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
JP3644862B2 (en) * 1998-12-25 2005-05-11 株式会社神戸製鋼所 Auxiliary fuel injection operation method to blast furnace
JP2000328115A (en) * 1999-05-12 2000-11-28 Nkk Corp Lance for injecting granular solid fuel into blast furnace and method for injecting granular solid fuel into blast furnace using this lance

Also Published As

Publication number Publication date
BR112014015099B1 (en) 2018-05-08
JP2012188743A (en) 2012-10-04
BR112014015099A2 (en) 2017-06-13
JP5923968B2 (en) 2016-05-25

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Legal Events

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B09A Decision: intention to grant
B16A Patent or certificate of addition of invention granted