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Title:
WASTE HEAT RECOVERY FACILITY FOR ARC FURNACE FOR STEEL MAKING, ARC FURNACE FACILITY FOR STEEL MAKING, AND WASTE HEAT RECOVERY METHOD FOR ARC FURNACE FOR STEEL MAKING
Document Type and Number:
WIPO Patent Application WO/2011/132669
Kind Code:
A1
Abstract:
A waste heat recovery facility for an arc furnace for steel making is provided with: first exhaust gas passages for discharging exhaust gas from each of a plurality of arc furnaces for steel making (1); waste heat boilers (6) that are installed in the first exhaust gas passages (2, 3, 4), and that recover the waste heat from the exhaust gas as saturated steam; a steam accumulator (62) that accumulates steam by merging the saturated steam generated by each of the waste heat boilers (6); a steam superheater (43) that produces superheated steam by heating the steam accumulated in the steam accumulator (62); second exhaust gas passages (5, 41, 42) that discharge exhaust gas, which has been obtained from the waste heat recovered by the waste heat boilers (6), guided to the steam superheater (43), and provided for superheating of the saturated steam; third exhaust gas passages that discharge exhaust gas, which has been obtained from the waste heat recovered by the waste heat boilers (6), but which bypasses the steam superheater (43); switching means (31, 32) that switch the exhaust gas passage, after waste heat has been recovered, between the second exhaust gas passages and the third exhaust passages (18, 12, 51).

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Inventors:
WAKAHARA Keiji (C/O JP STEEL PLANTECH Co, 3-1 Kinko-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 56, 〒2210056, JP)
若原　啓司 (〒56 神奈川県横浜市神奈川区金港町３番地１　スチールプランテック株式会社内 Kanagawa, 〒2210056, JP)
FUJIKURA Nobuyuki (C/O JP STEEL PLANTECH Co, 3-1 Kinko-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 56, 〒2210056, JP)
藤倉　信幸 (〒56 神奈川県横浜市神奈川区金港町３番地１　スチールプランテック株式会社内 Kanagawa, 〒2210056, JP)
YAMAZAKI Masanari (C/O JP STEEL PLANTECH Co, 3-1 Kinko-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 56, 〒2210056, JP)
Application Number:
JP2011/059615
Publication Date:
October 27, 2011
Filing Date:
April 19, 2011
Export Citation:
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Assignee:
JP STEEL PLANTECH CO. (3-1 Kinko-cho, Kanagawa-ku Yokohama-sh, Kanagawa 56, 〒2210056, JP)
スチールプランテック株式会社 (〒56 神奈川県横浜市神奈川区金港町３番地１ Kanagawa, 〒2210056, JP)
WAKAHARA Keiji (C/O JP STEEL PLANTECH Co, 3-1 Kinko-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 56, 〒2210056, JP)
若原　啓司 (〒56 神奈川県横浜市神奈川区金港町３番地１　スチールプランテック株式会社内 Kanagawa, 〒2210056, JP)
FUJIKURA Nobuyuki (C/O JP STEEL PLANTECH Co, 3-1 Kinko-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 56, 〒2210056, JP)
藤倉　信幸 (〒56 神奈川県横浜市神奈川区金港町３番地１　スチールプランテック株式会社内 Kanagawa, 〒2210056, JP)
International Classes:
C21C5/52; F22B1/18; F22B3/04; F27B3/10; F27B3/24; F27B3/26; F27B3/28; F27D17/00; F27D19/00
Attorney, Agent or Firm:
TAKAYAMA Hiroshi (Sangenjaya Horisho Bldg. 2F, 1-12-39 Taishido Setagaya-k, Tokyo 04, 〒1540004, JP)
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