Title:
METHOD OF REMOVING UNBURNED CARBON FROM COAL ASH
Document Type and Number:
WIPO Patent Application WO/2008/072299
Kind Code:
A1
Abstract:
A method comprising: a step in which unburned carbon contained in coal ash is mechanically
separated with a classifier; a step in which the coal ash from which part of the
unburned carbon has been removed with the classifier is pulverized or disaggregated
with a pulverizer; a step in which water is added to the coal ash pulverized or disaggregated
with the pulverizer to obtain a slurry; a step in which a scavenger is added to the
slurried coal ash; a step in which a shear force is applied to the slurry containing
the scavenger to cause the scavenger to selectively adhere to the unburned carbon
contained in the coal ash; a step in which a foaming agent is added to the slurry
in which the scavenger has adhered to the unburned carbon; and a step in which the
unburned carbon is floated on the slurry containing the foaming agent together
with bubbles and is separated.
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Inventors:
MATSUO, Kazuyoshi (Ltd. Chiba Works 1, Yawatakaigandori, Ichihara-sh, Chiba 01, 2908601, JP)
松尾 和芳 (〒01 千葉県市原市八幡海岸通１番地 三井造船株式会社 千葉事業所内 Chiba, 2908601, JP)
ABE, Kazuo (Ltd. 6-4 Tsukiji 5-chome, Chuo-k, Tokyo 39, 1048439, JP)
松尾 和芳 (〒01 千葉県市原市八幡海岸通１番地 三井造船株式会社 千葉事業所内 Chiba, 2908601, JP)
ABE, Kazuo (Ltd. 6-4 Tsukiji 5-chome, Chuo-k, Tokyo 39, 1048439, JP)
Application Number:
JP2006/324645
Publication Date:
June 19, 2008
Filing Date:
December 11, 2006
Export Citation:
Assignee:
MITSUI ENGINEERING & SHIPBUILDING CO., LTD. (6-4 Tsukiji 5-chome, Chuo-ku Tokyo, 39, 1048439, JP)
三井造船株式会社 (〒39 東京都中央区築地５丁目６番４号 Tokyo, 1048439, JP)
MATSUO, Kazuyoshi (Ltd. Chiba Works 1, Yawatakaigandori, Ichihara-sh, Chiba 01, 2908601, JP)
松尾 和芳 (〒01 千葉県市原市八幡海岸通１番地 三井造船株式会社 千葉事業所内 Chiba, 2908601, JP)
三井造船株式会社 (〒39 東京都中央区築地５丁目６番４号 Tokyo, 1048439, JP)
MATSUO, Kazuyoshi (Ltd. Chiba Works 1, Yawatakaigandori, Ichihara-sh, Chiba 01, 2908601, JP)
松尾 和芳 (〒01 千葉県市原市八幡海岸通１番地 三井造船株式会社 千葉事業所内 Chiba, 2908601, JP)
International Classes:
B09B5/00; B03B5/00; B03D1/02; B07B1/00; B09B3/00; B09B5/00; B03B5/00; B03D1/00; B07B1/00; B09B3/00
Attorney, Agent or Firm:
OGAWA, Shin-ichi et al. (Ogawa, Noguchi & SaikaInternational Patent Office,37 Kowa Building,4-5, Tsukiji 1-chom, Chuo-ku Tokyo 45, 1040045, JP)
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