旋转电极式电除尘器在大型火电机组上的应用

简述了旋转电极式电除尘器的工作原理和特点,重点介绍了大型火电厂330 MW机组旋转电极式电除尘器改造,详细分析了其采用旋转电极式电除尘器、电袋复合除尘器改造的技术经济性.大型火电厂330MW机组电除尘器改造后运行良好,出口粉尘浓度在30 mg/m3以下,并具有较好的经济性.     

电除尘器内部粒子运动及分布数学模型仿真研究

对电除尘器除尘过程中粉尘粒子运动及其分布规律进行研究,用数学的方法构建了一个比较完整的数学模型。通过设定合适的边界条件,采用差分法对所建立的数学模型进行求解,并借助功能强大的数值计算和绘图工具软件Matlab将电除尘器中复杂的粉尘粒子运动进行数值仿真,力求清晰地描述除尘过程中粒子的运动状态和分布规律。研究表明,电除尘器中粉尘粒子在横断面上的浓度分布大致符合指数函数的分布规律,靠近收尘极板的浓度值高于电晕线附近的浓度值,这说明数学模型能够真实地反映电除尘中粉尘粒子的运动规律。     

运行中更换电除尘器瓷转轴方法探讨

介绍了机组运行期间电除尘器电晕极振打瓷转轴断裂的原因及判断方法,首次尝试在不停机状态下更换瓷转轴,并在顶部传动和侧部传动两种电晕极振打方式下得到了成功应用。     

Multi-objective solid waste classification and identification model based on transfer learning method

Journal of Material Cycles and Waste Management - The rapid social development has given rise to a growing concern over environmental issues, one of which is the disposal of municipal solid waste....     

燃煤电厂电除尘器性能调整问题的讨论

介绍了燃煤电厂新建、改扩建和大修后，电除尘器冷态条件下的气流分配和分布调整，同极距离调整。空栽升压调整，收尘极和放电极振打加速度的调整；热态条件下的收尘极振打周期调整、供电控制方式调整和变工况调整。     

Research on the recycling industry development model for typical exterior plastic components of end-of-life passenger vehicle based on the SWOT method

In-depth studies on the recycling of typical automotive exterior plastic parts are significant and beneficial for environmental protection, energy conservation, and sustainable development of China. In the current study, several methods were used to analyze the recycling industry model for typical exterior parts of passenger vehicles in China. The strengths, weaknesses, opportunities, and challenges of the current recycling industry for typical exterior parts of passenger vehicles were analyzed comprehensively based on the SWOT method. The internal factor evaluation matrix and external factor evaluation matrix were used to evaluate the internal and external factors of the recycling industry. The recycling industry was found to respond well to all the factors and it was found to face good developing opportunities. Then, the cross-link strategies analysis for the typical exterior parts of the passenger car industry of China was conducted based on the SWOT analysis strategies and established SWOT matrix. Finally, based on the aforementioned research, the recycling industry model led by automobile manufacturers was promoted.     

扬州第二发电厂600MW机组电除尘器问题探析

阐述了扬州第二发电厂电除尘器运行中存在的问题，并对导致这些问题的因素进行了确定和排除，对电除尘器的运行管理具有借鉴意义。     

高海拔地区电除尘器极配形式的探讨

高海拔地区电除尘器运行电流大、电场电压低,除尘效率往往不高。针对高海拔地区空气稀薄、气压低,引起电除尘器的空气间隙和瓷绝缘放电特性曲线改变,除尘效率下降等现象,结合实践和理论分析提出了改进措施和建议。     

火电厂电除尘器节能减排的最新进展

电除尘器已成为燃煤电厂电力安全生产和环境保护必不可少的重要设备,电除尘器技术在节能减排已取得了重要成果。提效节能型高压电源在减排10%～50%以上的同时,可节能70%～95%以上。通过不断创新,有望将电除尘器建造成能长期稳定运行的达标节能低碳型绿色环保设备。     

基于支持向量机的燃烧过程NOx排放模型

针对电站锅炉煤粉燃烧过程中NOx排放机理模型难以建立的实际情况,取过量空气系数、一次风率、煤粉细度作为输入量,燃烧室NOx排放量作为输出量.建立三个基于向量机的NOx排放模型.研究表明,向量机模型不仅能对训练数据进行很好的训练,而且当预测一种新的工况时,也能对测试数据进行很好的拟合.     

Landfill modelling in LCA - a contribution based on empirical data

Landfills at various stages of development, depending on their age and location, can be found throughout Europe. The type of facilities goes from uncontrolled dumpsites to highly engineered facilities with leachate and gas management. In addition, some landfills are designed to receive untreated waste, while others can receive incineration residues (MSWI) or residues after mechanical biological treatment (MBT). Dimension, type and duration of the emissions from landfills depend on the quality of the disposed waste, the technical design, and the location of the landfill. Environmental impacts are produced by the leachate (heavy metals, organic loading), emissions into the air (CH(4), hydrocarbons, halogenated hydrocarbons) and from the energy or fuel requirements for the operation of the landfill (SO(2) and NO(x) from the production of electricity from fossil fuels). To include landfilling in an life-cycle assessment (LCA) approach entails several methodological questions (multi-input process, site-specific influence, time dependency). Additionally, no experiences are available with regard to mid-term behaviour (decades) for the relatively new types of landfill (MBT landfill, landfill for residues from MSWI). The present paper focuses on two main issues concerning modelling of landfills in LCA: Firstly, it is an acknowledged fact that emissions from landfills may prevail for a very long time, often thousands of years or longer. The choice of time frame in the LCA of landfilling may therefore clearly affect the results. Secondly, the reliability of results obtained through a life-cycle assessment depends on the availability and quality of Life Cycle Inventory (LCI) data. Therefore the choice of the general approach, using multi-input inventory tool versus empirical results, may also influence the results. In this paper the different approaches concerning time horizon and LCI will be introduced and discussed. In the application of empirical results, the presence of data gaps may limit the inclusion of several impact categories and therefore affect the results obtained by the study. For this reason, every effort has been made to provide high-quality empirical LCI data for landfills in Central Europe.