METHOD FOR SUPPRESSING ADHESION OF ASH AND DEVICE FOR SUPPRESSING ADHESION OF ASH IN BOILER

WIPO Patent Application WO/2011/010704

A1

In order to stably operate a boiler using several kinds of solid fuels including depleted ashes as fuels, adhesion of ashes is suppressed. A calculator (9) preliminarily collects properties of a solid fuel, such as the content rate of ashes and the composition of an ash constituent, as data (8). The calculator (9) uses the mix ratio of solid fuels as a parameter and calculates the composition of an ash constituent of the mixed fuels on the basis of the preliminarily measured composition of the ash constituent of each solid fuel. The calculator (9) determines a reference value of the rate of slug by which the deposit ratio of ashes is reduced on the basis of the relationship between the preliminarily measured deposit ratio of ashes and the ratio of slag. Further, the calculator (9) calculates the mix ratio of each solid fuel using a thermodynamic equilibrium calculation so as to obtain an ash composition in which the ratio of slag is not more than the determined reference value. On the basis of the mix ratio of each solid fuel calculated by the calculator (9), the amount of solid fuel dispensed from hoppers (1, 2) is adjusted by a fuel supply amount adjusting device (3). Thus, each solid fuel, the dispensed amount of which has been adjusted, is mixed by a mixer (4) and crushed by a crusher (5) before being supplied to a boiler (7) as a fuel and burned by a burner (6).

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AKIYAMA Katsuya (())
秋山　勝哉 (())

JP2010/062379

January 27, 2011

July 22, 2010

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KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 〒6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
AKIYAMA Katsuya (())

F23C1/00; F23K1/00; F23N5/00; G01N33/22

OGURI Shohei et al. (Eikoh Patent Firm, Toranomon East Bldg. 10F 7-13, Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)

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