Title:
微粉炭の生成方法
Document Type and Number:
Japanese Patent JP2012515841
Kind Code:
A
Abstract:
A method for producing pulverized coal including the steps of providing a drying gas heated to a predefined temperature in a hot gas generator; feeding the heated drying gas into a pulverizer; introducing raw coal into the pulverizer, the pulverizer grinding the raw coal into pulverized coal; collecting a mixture of drying gas and pulverized coal from the pulverizer and feeding the mixture to a filter, the filter separating the dried pulverized coal from the drying gas; collecting the dried pulverized coal for further use and feeding the drying gas from the filter to an exhaust line; and collecting the drying gas exiting the filter and feeding part of the collected drying gas to a recirculation line for feeding recirculation drying gas to the hot gas generator. According to an important aspect of the present invention, the step of providing the drying gas includes feeding a variable flow rate of hot stove waste gas to the hot gas generator through a hot stove waste gas line so as to maximize the amount of hot stove waste gas used as drying gas. A pressure of the drying gas at a pulverizer gas inlet is controlled by regulating a flow rate of the hot stove waste gas through the hot stove waste gas line.
Inventors:
Gedale, paul
Mayer, Marx
Stamatakis, Georges
Kowenberg, Bernard
Mayer, Marx
Stamatakis, Georges
Kowenberg, Bernard
Application Number:
JP2011545768A
Publication Date:
July 12, 2012
Filing Date:
January 21, 2010
Export Citation:
Assignee:
PAUL WURTH S.A.
International Classes:
C21B5/00; B02C15/04; F23K1/00; F26B11/16; F27D17/00
Domestic Patent References:
| JPS6259162B2 | 1987-12-09 | |||
| JPH0133522B2 | 1989-07-13 | |||
| JPS59145711A | 1984-08-21 | |||
| JPS6259162B2 | 1987-12-09 | |||
| JPH0133522B2 | 1989-07-13 | |||
| JPS59145711A | 1984-08-21 |
Foreign References:
| KR20040003630A | 2004-01-13 | |||
| KR20040003630A | 2004-01-13 |
Attorney, Agent or Firm:
Yoshiaki Sato