Title:
METHOD FOR PRODUCING LOW-SULFUR COAL
Document Type and Number:
WIPO Patent Application WO/2020/218243
Kind Code:
A1
Abstract:
Provided is a method for producing low-sulfur coal having an excellent desulfurization effect. In the production method, coal is brought into contact with a chemical agent that is a mixed solution of hydrogen peroxide and acetic acid to remove sulfur in the coal. It is preferred that the molar ratio of the acetic acid to the hydrogen peroxide ((acetic acid)/(hydrogen peroxide)) is 1.2 to 60.0 inclusive. It is preferred that the acetic acid is mixed with the hydrogen peroxide before the chemical agent is brought into contact with the coal and the chemical agent is brought into contact with the coal after 30 minutes or more has elapsed since the mixing is performed.
Inventors:
MURAI RYOTA (JP)
SUMI IKUHIRO (JP)
SUGAWARA KATSUYASU (JP)
KATO TAKAHIRO (JP)
SUMI IKUHIRO (JP)
SUGAWARA KATSUYASU (JP)
KATO TAKAHIRO (JP)
Application Number:
PCT/JP2020/017060
Publication Date:
October 29, 2020
Filing Date:
April 20, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C10B57/08; C10L9/06
Domestic Patent References:
| WO2011000914A1 | 2011-01-06 |
Foreign References:
| US4701183A | 1987-10-20 | |||
| JPS5373201A | 1978-06-29 | |||
| JP2002516380A | 2002-06-04 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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