Title:
A manufacturing method of ash-free charcoal
Document Type and Number:
Japanese Patent JP5990501
Kind Code:
B2
Abstract:
A method for producing an ashless coal includes an extraction step, a separation step and an ashless coal acquirement step. In the extraction step, a slurry obtained by mixing a coal with a solvent is heated and thereby a solvent-soluble component of the coal is extracted. In the separation step, the slurry is separated into a solution of the solvent-soluble component of the coal and a solid content-concentrated liquid. In the ashless coal acquirement step, an ashless coal is obtained by evaporating and separating the solvent from the solution. The solvent is a mixture of a dissolution medium and a coal extraction accelerator added thereto. The solvent contains a bicyclic aromatic compound that is liquid at ordinary temperature. The coal extraction accelerator containing no nitrogen has two benzene rings and has at least one cyclic structure having no double bond.
Inventors:
Sakai Koji
Noriyuki Okuyama
Kinoshita Shigeru
Takuya Yoshida
Noriyuki Okuyama
Kinoshita Shigeru
Takuya Yoshida
Application Number:
JP2013211996A
Publication Date:
September 14, 2016
Filing Date:
October 09, 2013
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C10L5/00; C10L9/00
Foreign References:
| WO2013129607A1 |
Attorney, Agent or Firm:
Kaji/Suhara Patent Office