Thread Content
Yan’an Energy Chemicals Thermal Power Center of Yanchang Petroleum: The waste steam recovery system for deaerators achieves significant energy-saving results. Author/Source: Yan’an Energy Chemicals, Yanchang Petroleum. Date: February 17, 2022. Clicks: 14. Recently, the newly installed waste steam recovery systems for the 4 thermal deaerators at Yan’an Energy Chemicals Thermal Power Center have been operating steadily for 2 weeks. The implementation of this technical upgrade has eliminated the discharge of steam from deaerators; 160,000 tons of condensed water are recovered each year, which is expected to save 2.4 million yuan in costs per year. The deaerator is one of the key devices in boilers and heating systems; during the steam-based deoxygenation process, a large amount of waste steam is discharged, resulting in resource waste. In response to this situation, the Thermoelectric Power Center decided to install steam condensation and recovery equipment at the deaerator discharge outlets. Overcoming challenges such as a shortage of labor and supplies during the pandemic, the center completed the installation, commissioning, water testing, and official operation of 4 sets of deaerator waste steam recovery systems before the Spring Festival. According to Zhao Dailin, the head of the Thermoelectric Power Center, this waste steam recovery system uses cooled deionized water to cool the waste steam from the deaerator; this steam then enters a mixed injector for recovery. This approach not only enables the dual recovery of heat and water but also eliminates the four streams of steam that appeared on the roof of the turbine room, as well as the noise pollution caused by them. Next, the Thermoelectric Power Center will recycle the waste steam and boiler wastewater from the remaining 3 locations, striving to achieve zero emissions of water and steam at the center, thereby making a significant contribution to the company’s efforts to save energy, reduce costs, and improve efficiency.