JP6256710B2 - 酸素高炉の操業方法 - Google Patents
酸素高炉の操業方法 Download PDFInfo
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- JP6256710B2 JP6256710B2 JP2015108078A JP2015108078A JP6256710B2 JP 6256710 B2 JP6256710 B2 JP 6256710B2 JP 2015108078 A JP2015108078 A JP 2015108078A JP 2015108078 A JP2015108078 A JP 2015108078A JP 6256710 B2 JP6256710 B2 JP 6256710B2
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- blast furnace
- oxygen
- tuyere
- pure oxygen
- temperature
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- 229910052760 oxygen Inorganic materials 0.000 title claims description 47
- 239000001301 oxygen Substances 0.000 title claims description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 43
- 238000000034 method Methods 0.000 title claims description 17
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 45
- 239000007789 gas Substances 0.000 claims description 32
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 239000003245 coal Substances 0.000 description 18
- 239000000571 coke Substances 0.000 description 11
- 238000007664 blowing Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 150000002926 oxygen Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Description
従来の一般的な高炉というのは、羽口から熱風を吹き込むタイプのものである。その熱風は、これを作り出す熱源として、高炉やコークス炉、転炉などから発生する副生ガスを混合したガス(Mガス)が使用される。それは、熱風のもつ熱量分だけ、還元材の比率を低減できるからである。即ち、熱風を使用することの意義は、従来の高炉で使用されている還元材が、炭素を主成分とする化石燃料で構成されることから、その熱風送風によって、化石燃料の使用量およびCO2発生量を抑制することができるという点にある。
なお、この実施例では、3重管構造により300℃にしたガスを微粉炭に合流させたが、別な配管から同様の純酸素を微粉炭流に合流(吹き込ん)させもよい。
2 バーナー
2a 内管
2b 外管
3 コークス
4 固体還元剤
6 サイクロン
7 捕集箱
8 電気ヒータ
Claims (2)
- 還元剤と共に純酸素を羽口を介して炉内に吹き込む酸素高炉の操業に当たり、炉内に吹き込むその純酸素は吹き込み全純酸素量の20vol.%以下が300℃〜600℃の予熱純酸素であり、かつこの予熱純酸素を多重管もしくは複数配管を用いて前記還元剤流の近傍に吹き込むことを特徴とする酸素高炉の操業方法。
- 前記予熱純酸素は、熱交換または可燃性ガスを添加して燃焼させて得られるものを用いることを特徴とする請求項1に記載の酸素高炉の操業方法。
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JP2015108078A JP6256710B2 (ja) | 2015-05-28 | 2015-05-28 | 酸素高炉の操業方法 |
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JP2015108078A JP6256710B2 (ja) | 2015-05-28 | 2015-05-28 | 酸素高炉の操業方法 |
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JP2016222949A JP2016222949A (ja) | 2016-12-28 |
JP6256710B2 true JP6256710B2 (ja) | 2018-01-10 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6919632B2 (ja) * | 2018-08-02 | 2021-08-18 | Jfeスチール株式会社 | 銑鉄製造設備およびそれを用いた銑鉄製造方法 |
JP6922864B2 (ja) * | 2018-08-02 | 2021-08-18 | Jfeスチール株式会社 | 銑鉄製造設備およびそれを用いた銑鉄製造方法 |
CA3158066A1 (en) * | 2019-12-26 | 2021-07-01 | Yuki Kawashiri | Method of operating blast furnace and blast furnace ancillary facility |
CN114901840A (zh) * | 2020-01-10 | 2022-08-12 | 杰富意钢铁株式会社 | 高炉的操作方法和高炉附属设备 |
JP7131697B2 (ja) * | 2020-01-23 | 2022-09-06 | Jfeスチール株式会社 | 高炉の操業方法および高炉附帯設備 |
EP4141130B1 (en) * | 2020-04-24 | 2024-05-29 | JFE Steel Corporation | Method of operating blast furnace and blast furnace ancillary facility |
CN114480754A (zh) * | 2022-01-28 | 2022-05-13 | 新疆八一钢铁股份有限公司 | 一种碳氢耦合的高炉炼铁方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63169310A (ja) * | 1987-01-06 | 1988-07-13 | Nkk Corp | 高炉操業法 |
JPS63171818A (ja) * | 1987-01-09 | 1988-07-15 | Nkk Corp | 酸素高炉の羽口 |
JPH1112612A (ja) * | 1997-06-25 | 1999-01-19 | Nkk Corp | 高炉への微粉炭吹き込み用ランス |
JPH1112613A (ja) * | 1997-06-27 | 1999-01-19 | Nkk Corp | 高炉の微粉炭吹き込み用ランス |
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