锅炉受热面积灰污染导致锅炉运行的经济性和安全性下降。

Ash fouling on heating surfaces of boiler concerns boiler operational economy and safety.

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锅炉受热面积灰污染导致锅炉运行的经济性和安全性下降。

Ash fouling on heating surfaces of boiler causes operational economy and safety of boilers to decrease.

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燃煤电站锅炉运行过程中，各受热面会不同程度地受到灰污染。

During the operation of coal-fired boiler, heat-transferring surface inevitably encounters fouling problem, which has a negative effect on reliability and economy of units.

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