Design and application of flue gas condensate water recovery technology in gas heating system

This study takes the energy-saving retrofit of a flue gas waste heat recovery system of a heating plant in Beijing as an example. It proposes a technical approach to maximize the collection and treatment of condensate water from boiler flue gas, which is then supplemented to the primary pipe network of the heating plant and even the secondary pipe network systems of heat exchange stations. This paper details the specific implementation scheme and control strategies for condensate water utilization. After system implementation, significant water-saving effects are achieved, successfully realizing the goals of improving gas boiler thermal efficiency, conserving energy, reducing emissions, and ensuring efficient and economical operation of the heating system.