为了解决某电厂直吹式制粉系统阻力大、出力不足、制粉单耗高、分离器效率低、挡板调节性能差、煤粉细度不合格、磨损严重等问题,基于先进的旋涡理论,采用气固分离技术,对影响分离器性能的关键因素进行深入研究,设计出以旋风分离为主、...为了解决某电厂直吹式制粉系统阻力大、出力不足、制粉单耗高、分离器效率低、挡板调节性能差、煤粉细度不合格、磨损严重等问题,基于先进的旋涡理论,采用气固分离技术,对影响分离器性能的关键因素进行深入研究,设计出以旋风分离为主、惯性分离为辅的旋惯耦合粗粉分离器,并成功应用,同时对分离器出口煤粉输送管道进行优化改造。结果表明:该直吹式制粉系统优化改造后,分离器分离效率提高13.3%,制粉出力增加20%,制粉单耗下降4.73 k W·h/t。展开更多
A thermal power plant of Sinopec has 9 boilers, which generally have problems of high exhaust gas temperature and high flying ash carbon content. In order to improve the adaptability of coals, the stability of coal po...A thermal power plant of Sinopec has 9 boilers, which generally have problems of high exhaust gas temperature and high flying ash carbon content. In order to improve the adaptability of coals, the stability of coal powder ignition, the burn-off rate of pulverized coals and the boiler efficiency, a series of renovation projects about importing hot air into mill exhauster are proposed. For the sake of verifying the renovation effects, an efficiency performance test is conducted on the renovated #5 boiler. The test result shows that the boiler heat efficiency has improved by 0.4% and it operates more safely and reliably after the renovation. At last, this paper recommends an optimized operation mode.展开更多
文摘为了解决某电厂直吹式制粉系统阻力大、出力不足、制粉单耗高、分离器效率低、挡板调节性能差、煤粉细度不合格、磨损严重等问题,基于先进的旋涡理论,采用气固分离技术,对影响分离器性能的关键因素进行深入研究,设计出以旋风分离为主、惯性分离为辅的旋惯耦合粗粉分离器,并成功应用,同时对分离器出口煤粉输送管道进行优化改造。结果表明:该直吹式制粉系统优化改造后,分离器分离效率提高13.3%,制粉出力增加20%,制粉单耗下降4.73 k W·h/t。
文摘A thermal power plant of Sinopec has 9 boilers, which generally have problems of high exhaust gas temperature and high flying ash carbon content. In order to improve the adaptability of coals, the stability of coal powder ignition, the burn-off rate of pulverized coals and the boiler efficiency, a series of renovation projects about importing hot air into mill exhauster are proposed. For the sake of verifying the renovation effects, an efficiency performance test is conducted on the renovated #5 boiler. The test result shows that the boiler heat efficiency has improved by 0.4% and it operates more safely and reliably after the renovation. At last, this paper recommends an optimized operation mode.
