Title:
METHOD FOR PRODUCTION OF ASHLESS COAL
Document Type and Number:
WIPO Patent Application WO/2008/044728
Kind Code:
A1
Abstract:
Disclosed is a method for producing an ashless coal for use as a raw material coal for
a coke for steelmaking. The method comprises: a slurry preparation step (S1)
for mixing a solvent and a coal to prepare a slurry; an extraction step (S2) for
extracting the slurry produced in the slurry preparation step (S1) at 400 to 420ºC
for 20 minutes or shorter and then cooling the resulting product to 370ºC
or lower; a separation step (S3) for separating theslurry produced in the extraction
step (S2) into a liquid fraction and a non-liquid fraction; and an improved coal
production step (S4) for separating the solvent from the liquid fraction obtained
in the separation step (S3) to produce an improved coal, i.e., an ashless coal.
Inventors:
OKUYAMA NORIYUKI
TADA NAOJI
FURUYA ATSUSHI
KOMATSU NOBUYUKI
TADA NAOJI
FURUYA ATSUSHI
KOMATSU NOBUYUKI
Application Number:
PCT/JP2007/069833
Publication Date:
April 17, 2008
Filing Date:
October 11, 2007
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
OKUYAMA NORIYUKI
TADA NAOJI
FURUYA ATSUSHI
KOMATSU NOBUYUKI
OKUYAMA NORIYUKI
TADA NAOJI
FURUYA ATSUSHI
KOMATSU NOBUYUKI
International Classes:
C10L5/00
Foreign References:
| JP2005120185A | 2005-05-12 |
Other References:
OKUYAMA N. ET AL.: "Kanzen Muhaitan (Hyper Coal) Seizo Process no Kaihatsu", R&D KOBE STEEL ENGINEERING REPORTS, vol. 56, no. 2, 1 August 2006 (2006-08-01), pages 15 - 22, XP003021398
SHINOZAKI S. ET AL.: "P12-11 Shin'nenryo 'Hyper Coal no Kaihatsu' to 'Gas Turbine eno Tekiyo Gijutsu Kaihatsu'", DAI 8 KAI DORYOKU.ENERGY GIJUTSU SYMPOSIUM KOEN RONBUNSHU, 2002, pages 119 - 124, XP003021399
YOSHIDA T. ET AL.: "Hyper Coal Seizo ni okeru Yuki Yobai Chushutsu Joken no Kento", MINING AND MINERALS, vol. 118, no. 2, 2002, pages 136 - 140, XP003021400
SHINOZAKI S. ET AL.: "P12-11 Shin'nenryo 'Hyper Coal no Kaihatsu' to 'Gas Turbine eno Tekiyo Gijutsu Kaihatsu'", DAI 8 KAI DORYOKU.ENERGY GIJUTSU SYMPOSIUM KOEN RONBUNSHU, 2002, pages 119 - 124, XP003021399
YOSHIDA T. ET AL.: "Hyper Coal Seizo ni okeru Yuki Yobai Chushutsu Joken no Kento", MINING AND MINERALS, vol. 118, no. 2, 2002, pages 136 - 140, XP003021400
Attorney, Agent or Firm:
ISONO, Michizo (Sabo Kaikan Annex7-4, Hirakawa-cho 2-chome, Chiyoda-ku Tokyo 93, JP)
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