This paper proposes a self-driven wet-hot flue gas total heat recovery system according to the characteristics of the heat transfer process of flue gas condensation, which uses the sensible heat in the high-temperature section to drive the system and complete the deep waste heat recovery of flue gas. The effect of flue gas and secondary water flow rate, flue gas and secondary water inlet temperature, and flue gas moisture on system performance were investigated and analyzed. Besides, the applicability analysis of technology and economic analysis are also performed. The results show that under the rated working conditions, the flue gas outlet temperature and relative humidity are 41.39 °C and 61.25%, respectively, and the maximum heat recovery rate of the system can reach 11.6%. When the flue gas inlet temperature is increased from 350 °C to 550 °C, the heat exchange capacity of the system is increased by 46%. Besides, when the flue gas inlet parameter is 550°C/ and 120g/kg (a), if the expected heat recovery rate of the known project is 10%, the maximum temperature of the secondary water that can be prepared by the self-driving system is 63°C and the payback time is 2.53 years. When the flue gas inlet temperature and the moisture content is high, the system can provide hot water with higher temperature and is more energy-efficient than the traditional scheme.

根据烟气冷凝传热过程的特点，提出了一种自驱动湿热烟气总热回收系统，该系统利用高温段的显热来驱动系统，完成深度排污。烟气的热回收。研究并分析了烟气和二次水流量，烟气和二次水入口温度以及烟气水分对系统性能的影响。此外，还进行了技术的适用性分析和经济分析。结果表明，在额定工作条件下，烟气出口温度和相对湿度分别为41.39°C和61.25％，系统的最大热回收率可达到11.6％。当烟气入口温度从350°C升高到550°C时，系统的热交换能力提高了46％。此外，当烟气入口参数为550°C /和120g / kg（a）时，如果已知项目的预期热回收率是10％，则可通过自燃装置制备二次水的最高温度。驱动系统为63°C，投资回收期为2.53年。当烟气入口温度高且水分含量高时，该系统可以提供比传统方案更高的温度和更高的能源效率。