JP5200618B2 - 高炉操業方法 - Google Patents
高炉操業方法 Download PDFInfo
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- JP5200618B2 JP5200618B2 JP2008082516A JP2008082516A JP5200618B2 JP 5200618 B2 JP5200618 B2 JP 5200618B2 JP 2008082516 A JP2008082516 A JP 2008082516A JP 2008082516 A JP2008082516 A JP 2008082516A JP 5200618 B2 JP5200618 B2 JP 5200618B2
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- gas
- reducing material
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- blown
- combustion
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 8
- 239000007789 gas Substances 0.000 claims description 65
- 239000000463 material Substances 0.000 claims description 64
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 38
- 238000007664 blowing Methods 0.000 claims description 28
- 239000000126 substance Substances 0.000 claims description 20
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000001294 propane Substances 0.000 claims description 6
- 238000011017 operating method Methods 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 239000003345 natural gas Substances 0.000 description 11
- 230000009467 reduction Effects 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000000571 coke Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Description
・低密度、低粘度によるシャフト部での圧損緩和、
・還元速度上昇によるシャフト効率上昇と還元材比低下、還元率低下によるボッシュガス量低下、
・融着帯の鉱石の溶け落ち性改善と、これに伴う圧損低下、
・水素還元率上昇に伴うソルロス負荷低下と、これによるコークス粉化軽減と炉下部充填層の粉率低下、
など、高炉内において様々な圧損緩和効果を有する。
a)同一吹きこみ量の場合、微粉炭より天然ガスの方が燃焼焦点位置(レースウェイ内の温度最高点、CO2濃度のピーク位置に一致)が羽口先端に近づくこと、
b)燃焼焦点位置が羽口先に近づくほどレースウェイ深度が浅くなること、
などが分かった。この傾向はメタンガスをプロパンガスに変更した場合も同様であった。
(1)少なくとも2重管構造を有する多重管構造のランスを用い、該ランスの最内管から気体還元材を炉内に吹きこみ、前記最内管の外側の管から支燃性を有しない気体状物質を炉内に吹きこむことを特徴とする高炉操業方法。
(2)気体還元材として、メタン、プロパン、水素、COのうちから選ばれた少なくとも1種以上を含む還元ガスを吹き込むことを特徴とする(1)に記載の高炉操業方法。
(3)支燃性を有しない気体状物質が、不活性ガス、水蒸気、炭酸ガスのうちから選ばれた少なくとも1種以上のガスを含み、かつ線流速を気体還元材のランス先端線流速の1.5倍以上として吹き込むことを特徴とする(1)または(2)に記載の高炉操業方法。
2 内管
3 気体還元材
4 外管
5 支燃性を有しない気体状物質
Claims (2)
- 少なくとも2重管構造を有する多重管構造のランスを用い、該ランスの最内管から気体還元材を炉内に吹きこみ、
前記最内管の外側の管から、不活性ガス、水蒸気、炭酸ガスのうちから選ばれた少なくとも1種以上のガスを含みかつ支燃性を有しない気体状物質を、線流速を前記気体還元材のランス先端線流速の1.5倍以上として炉内に吹きこむことを特徴とする高炉操業方法。 - 気体還元材として、メタン、プロパン、水素、COのうちから選ばれた少なくとも1種以上を含む還元ガスを吹き込むことを特徴とする請求項1に記載の高炉操業方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008082516A JP5200618B2 (ja) | 2008-03-27 | 2008-03-27 | 高炉操業方法 |
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---|---|---|---|
JP2008082516A JP5200618B2 (ja) | 2008-03-27 | 2008-03-27 | 高炉操業方法 |
Publications (2)
Publication Number | Publication Date |
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JP2009235482A JP2009235482A (ja) | 2009-10-15 |
JP5200618B2 true JP5200618B2 (ja) | 2013-06-05 |
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JP2008082516A Active JP5200618B2 (ja) | 2008-03-27 | 2008-03-27 | 高炉操業方法 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5974687B2 (ja) * | 2011-07-15 | 2016-08-23 | Jfeスチール株式会社 | 高炉操業方法 |
JP5775476B2 (ja) * | 2012-03-06 | 2015-09-09 | 新日鐵住金株式会社 | 高炉羽口からの還元性ガス吹き込み方法及び吹き込みランス |
BR112021018826A2 (pt) * | 2019-03-27 | 2021-11-23 | Jfe Steel Corp | Método de aquecimento de fundo de forno e lança de queimador usada no método |
CN110567280B (zh) * | 2019-09-04 | 2024-03-15 | 中国恩菲工程技术有限公司 | 氧化还原枪及具有其的氧化还原炉 |
WO2023162344A1 (ja) * | 2022-02-24 | 2023-08-31 | Jfeスチール株式会社 | 高炉の操業方法、溶銑の製造方法及び高炉付帯設備 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10158705A (ja) * | 1996-12-05 | 1998-06-16 | Sumitomo Metal Ind Ltd | 高炉の操業方法 |
JP3796021B2 (ja) * | 1997-09-17 | 2006-07-12 | 新日本製鐵株式会社 | 高炉羽口からの微粉炭吹き込み方法及び吹き込みランス |
JP3798322B2 (ja) * | 2001-02-19 | 2006-07-19 | 新日本製鐵株式会社 | 高炉羽口からの含酸素粉体吹き込み方法 |
JP2006312757A (ja) * | 2005-05-06 | 2006-11-16 | Jfe Steel Kk | 気体還元材吹込み用のランス、高炉および高炉操業方法 |
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- 2008-03-27 JP JP2008082516A patent/JP5200618B2/ja active Active
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