A Novel Flue Gas Utilization and White Smoke Elimination System Based on Afluidized Bed Boiler Power Plant for Improving City Appearance and Clean and Intelligent Production

White smoke is often considered to be an unclean phenomenon, which seriously affects the appearance of the city and causes public opposition. And the residual SO2 in the white smoke will also generate H2SO4 under the action of water and oxygen, which will corrode especially the exposed metal equipment such as rails, traffic power grid. Therefore, it is very important to prevent white smoke and cleaner production from being seen in cities. And a system for condensing and reheating to eliminate white smoke to protect urban traffic facilities is proposed and analyzed based on a fluidized bed boiler power plant. Studies have shown that the lower the exhaust gas temperature, the lower the slurry cooling water flow. The wet flue gas at the tail is first condensed to remove water, and then heated with part of the waste heat to prevent the generation of white smoke. It can reduce the final heat consumption rate by 31.40 kJ/kWh, increase the power generation power by 4.30 MW, increase the thermal efficiency of power generation. While it reduce the standard coal consumption rate of power generation by 1.18 g/kWh. While the smoke is heated to 73 °C to be eliminated at a lower temperature. Therefore, not only the negative impact of white smoke on urban traffic is eliminated, but also clean production that protects the urban environment is realized.