45 伝熱管表面改質による燃焼灰付着低減効果(灰・微量金属(2))

抄録

In pulverized coal fired boilers, 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 solve this problem, surface treatment technology of the heat exchanger tubes is developed in this study. Surface treatment technology adopted in this study could reduce the ash deposition during coal combustion. The adhesive bond between the deposition layer and the tube surface related to percentage of content of alkali sulfate in ash.