Title:
PULVERIZATION ASSISTANT FOR COAL AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2010/067689
Kind Code:
A1
Abstract:
For the purpose of greatly improving the efficiency of coal pulverization and improving the combustion efficiency of a pulverized coal-fired boiler, a pulverization assistant containing fine silica (SiO2) having an average particle size of from 4 nm to 20 μm, desirably a colloidal silica that contains silica having an average particle size of 4-200 nm at a mass ratio of 1-50%, or more desirably a colloidal silica obtained by adding an Li compound and/or the like to the above-mentioned colloidal silica, is used as a pulverization assistant. When coals are pulverized, the pulverization assistant is added thereto at a mass ratio of 0.1-2.0% in terms of SiO2.
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Inventors:
TANAKA, Nobuo (2-8, Shibaura 4-chome, Minato-k, Tokyo 23, 〒1080023, JP)
田中 信夫 (〒23 東京都港区芝浦４丁目２番８号 株式会社タイホーコーザイ内 Tokyo, 〒1080023, JP)
田中 信夫 (〒23 東京都港区芝浦４丁目２番８号 株式会社タイホーコーザイ内 Tokyo, 〒1080023, JP)
Application Number:
JP2009/069333
Publication Date:
June 17, 2010
Filing Date:
November 13, 2009
Export Citation:
Assignee:
Taihokohzai Co., Ltd. (2-8 Shibaura 4-chome, Minato-ku Tokyo, 23, 〒1080023, JP)
株式会社タイホーコーザイ (〒23 東京都港区芝浦４丁目２番８号 Tokyo, 〒1080023, JP)
TANAKA, Nobuo (2-8, Shibaura 4-chome, Minato-k, Tokyo 23, 〒1080023, JP)
株式会社タイホーコーザイ (〒23 東京都港区芝浦４丁目２番８号 Tokyo, 〒1080023, JP)
TANAKA, Nobuo (2-8, Shibaura 4-chome, Minato-k, Tokyo 23, 〒1080023, JP)
International Classes:
B02C23/06; C10L9/00; F23K1/00
Attorney, Agent or Firm:
MATOBA, Motonori (MR Building 3F 30-17, Hongo 1-chome, Bunkyo-k, Tokyo 33, 〒1130033, JP)
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