Title:
微粉炭の製造方法
Document Type and Number:
Japanese Patent JP6798407
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for stably manufacturing fine coals by controlling drying conditions when pulverizing coals by a pulverization mill.SOLUTION: A method for manufacturing fine coals, in which firstly, a moisture value of a coal 6, which is inputted into a coal hopper 2, is determined, a moisture value of a coal to be supplied to a pulverization mill 1 is estimated from the determined moisture value, and a supply amount of coals from the coal hopper 2 to the pulverization mill 1 is determined by a load cell 10. A fuel gas amount of a gas burner 3 is feed-forward controlled based on the estimated moisture value and the supply coal amount, and on the other hand, a temperature of an exhaust gas discharged from the pulverization mill 1 is determined by a thermometer 11, and the fuel gas amount of the gas burner 3 is feedback-controlled so that the determined temperature of the exhaust gas falls within a prescribed temperature range.SELECTED DRAWING: Figure 1
Inventors:
Kyohei Suzuki
Hiroyuki Sato
Koji Yanagino
Koji Yamamoto
Shinji Hasegawa
Hiroyuki Sato
Koji Yanagino
Koji Yamamoto
Shinji Hasegawa
Application Number:
JP2017083294A
Publication Date:
December 09, 2020
Filing Date:
April 20, 2017
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B02C25/00; F23K1/04; F23K3/02
Domestic Patent References:
| JP2014114994A | ||||
| JP6047232U | ||||
| JP63263316A | ||||
| JP56070853A | ||||
| JP2194865A | ||||
| JP8299828A | ||||
| JP2014062280A | ||||
| JP2016168590A | ||||
| JP2015025582A | ||||
| JP2016118346A | ||||
| JP2010104939A | ||||
| JP2018103067A |
Foreign References:
| US20100043675 |
Attorney, Agent or Firm:
Ginza Marronnier Patent Office