Login| Sign Up| Help| Contact|

Patent Searching and Data


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 (())
奥山 憲幸 (())
TADA, Naoji (())
多田 直司 (())
Application Number:
JP2007/069833
Publication Date:
April 17, 2008
Filing Date:
October 11, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町2丁目10番26号 Hyogo, 6518585, JP)
OKUYAMA, Noriyuki (())
奥山 憲幸 (())
TADA, Naoji (())
International Classes:
C10L5/00
Attorney, Agent or Firm:
ISONO, Michizo (Sabo Kaikan Annex7-4, Hirakawa-cho 2-chome, Chiyoda-ku Tokyo 93, 1020093, JP)
Download PDF: