37 微粉炭燃焼場における灰付着特性の予測(灰付着,アルカリ金属)

抄録

In pulverized coal combustors, molten ash particles generated during combustion have possibility of adhesion on surface of heat exchanger tubes. This ash deposition layer formed plays a role for insulation surrounding the tubes. In order to prevent this problem, it is, first, necessary to predict ash deposition characteristics. In this paper, not only amount of the ash deposition was measured experimentally, but also that amount was compared with amount of the slag-liquid phase calculated by the thermal equilibrium theory. As a result, the amount of slag-liquid phase calculated could be correlated with the amount of ash deposition obtained experimentally.