The scheme for reforming air preheater and how to reduce the ratio of air leakage are analyzed. it is useful for power plant economic operation.

通过对回转式空气预热器改造的方案及措施分析，阐述了降低预热器漏风率对电厂经济运行所带来的好处。

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Operatio practice showed that the realization of state maintenance could save cost, reduce faults, and improve safe and and economic operation level of power plant.

运行实践表明，实现状态维修能节省成本，减少故障．提高电厂安全经济运行水平。

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Through the retrofit, the economic operation level and safety reliability of the power plant has been improved with significant economic benefit obtained.

通过技术改造，提高了电厂的经济运行水平和安全可靠性，经济效益十分显著。

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