DTM350／600磨煤机出口煤封改造

针对华能德州电厂DTM350/600磨煤机出口煤封处频繁漏粉缺陷,提出了相应改造方案,取得了显著效果。     

双氧水装置精馏塔塔顶分布器的改造设计

分析散堆填料更换为高效规整填料后精馏塔操作状况不正常的原因 ,以及详细介绍对分布器的改造。     

Effects of Pb–B–Si–O glass on the microstructures and electrical properties of silver electrode for LTCC application

The co-firing compatibility between green tape and the Ag electrode is a crucial characteristic in low-temperature co-fired ceramic (LTCC) technology and plays a vital role in improving the performance and application status of LTCC device modules. In this work, we studied the effects of lead content on the glass viscosity, the microstructure, and co-firing compatibility of silver electrode film. It was found that the softening point and viscosity of the glass were decreased, and the wettability between the glass and silver was improved with the increase of the lead content, which promoted the co-firing densification and interfacial bonding between the silver electrode film and the ceramic layer. The film presented the best electrical properties co-firing at 875 °C for 15 min, with the resistivity of 1.21 mΩ/sq. And the film was densified. The sintering interface was clear and well bonded. The results showed that an appropriate lead content in glass could effectively improve the interfacial bonding and the electrical properties during co-fired process, providing a new control methodology for realizing co-fired matching of the silver electrode film with low-temperature co-fired ceramics.

     

DTM 350/600磨煤机主轴承温度高的原因及处理

磨煤机安全稳定运行是保障燃煤发电机组经济稳定运行的基础,针对华能德州电厂DTM 350/600磨煤机主轴承温度高,经常被迫停运的状况,结合主轴承润滑方式和最小润滑油膜厚度的建立,从而找出主轴承温度高的主要因素,利用新型研磨技术,新型简单工艺消除和缓解主轴承温度高这一难题,取得了非常显著的效果,为同类型磨煤机提供了可靠的技术支持。