Gas boiler station in Shahe of Beijing Yong’an Heat Energy
Project Background
Two 15-ton gas-fired boilers (one in operation, one on standby) are installed in the Shahe boiler station of Beijing Yong'an Heat Energy, supplying heat to 220,000 square meters of residential areas. Its flue-gas system had already been fitted with waste heat recovery (a two-stage economizer) that lowered the flue-gas temperature to about 53°C; however, the latent heat in the steam of the flue gas was still largely lost, and the white plume in winter affected the city landscape.
Technical Solution
Beijing Keyuan Ruineng Energy-saving Equipment Co., Ltd.'s deep flue-gas waste heat recovery technology further reduced the flue-gas temperature from 53°C to 28.6°C, recovering the latent heat of vaporization in the steam; the recovered heat heats the network return water through heat pumps. Natural-gas utilization was improved by more than 10%, and the dust and "white plume" in the flue gas were eliminated.
Key Results
- Flue-gas waste heat recovered: 500kW
- Heat supply capacity: 1.2MW
- Natural gas saved per year: 119,000 Nm³
Technical Advantages
- Gas boiler exhaust temperature reduced to below 30°C;
- Natural-gas utilization improved by more than 10%;
- NOx, SO2 and other pollutant emissions reduced, white plume eliminated;
- The unit can provide cooling in summer — one unit, two uses.
Selected Projects
- Tianjin West Railway Station CCHP waste heat recovery project
- Tongzhou Zhumuchang Boiler House waste heat recovery project
- General Logistics Department gas boiler house waste heat recovery project
- Future Technology City gas power plant waste heat recovery project
- Shahe Boiler House waste heat recovery project
- Dongba Boiler House waste heat recovery project
- Changping District Nanhuan Heating Plant coal-to-gas conversion project
- Beijing Yong'an Heat Energy North Ring Boiler House
- Dalong Heating Center — Yuxiang Boiler House
- Beijing Tianlian Heat Energy Co., Ltd.