15.固体原子吸光法によるフライアッシュ微量元素の含有分布測定

概要

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Trace element distributions in fly ash particles from a pulverized coal fired plant were investigated for three coals to elucidate the partitioning mechanisms in combustion processes. To determine Hg concentration each particle size, the fly ashes were sieved in seven classifications by acoustic sieves. In this study, advanced techniques, direct determination by GF-AAS, is employed to solve technical problems in the current analysis methods. Characteristics of GF-AAS are investigated carefully. It is found that mercury concentration in the sieved fly ash is increased with increasing the average particle diameter. Since large size particles contain much unburned carbon, relation between unburned carbon and Hg concentration had good correlation for three coal types.
一般社団法人日本エネルギー学会の論文
2006-10-12