Taking technological transformation of dry-type slag removal system of 1 000 MW ultra-supercriti-cal boilers in a power plant as an example, the paper analyzes and solves problem of ash deposits in the slope at the bottom of dry-type slag removal system in the first level, providing reference for design and tech-nical transformation of the same projects.%以某发电厂超超临界锅炉干渣机技术改造为例，分析并解决了一级干渣机底部斜坡段积灰的问题，为同类工程的设计及技术改造提供参考。
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