探讨在锅炉尾部预热器后加装烟气换热器技术，可有效地利用锅炉排烟温度热焓，降低排烟温度热损失，并通过换热器提高凝结水焓值，实现机组整体热经济性。同时，提出加装锅炉尾部烟气换热器技术以改变以往用水冷却烟气后进行脱硫的运行模式，达到提高脱硫效率、节约淡水资源、实现多赢的目的。%This essay probes into the technique of equipping the preheater of the tail of the boiler with the GGH which can effectively make use of the thermal enthalpy of the flue gas temperature of the boiler to reduce the heat loss of the flue gas temperature as well as increasing the enthalpy ratio of the condensation water to improve the heat economy of the unit. Compared with the operational mode of desulfurization after water-cooling the gas, the GGH can both increase the efficiency of desulfurization and save the fresh water resource.
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