感应式水雾荷电及其捕尘效应的研究

本文阐述感应式水雾荷电的原理及结构要素，分析了荷电雾粒的捕尘机制，并指明感应式水雾荷电除尘器提高除尘效率的技术途径。     

安家岭储煤场输煤暗道通风除尘技术应用研究

针对输煤暗道的生产工艺现状,提出了采用通风与密闭抽尘净化技术,结合转载落料点密闭干雾降尘等技术措施,实现了输煤暗道内粉尘的的综合治理,通过粉尘浓度在线监测系统进行智能化控制,实现对输煤暗道通风除尘系统的远程连续监测监控,输煤暗道转载点下风侧5 m作业人员通行的位置总粉尘浓度由380.8 mg/m3降至19.8 mg/m3,降尘效率达94.8%,呼吸性粉尘浓度从96.7 mg/m3降至8.4 mg/m3,降尘效率达91.3%,降尘效果较好,有效地解决了输煤暗道及其转载落料点的粉尘污染问题,为输煤暗道内的粉尘防治提供参考依据。     

含锌铅粉尘配碳球团中氧化铁还原动力学

在氮气气氛和１０５０～１３００℃温度范围内，采用化学分析方法研究了还原温度、过量碳及煤粉粒度对含锌铅粉尘配碳球团中氧化铁还原速率的影响．结果表明：还原温度对氧化铁还原速度有显著影响，过量碳和煤粉粒度对还原速率没有影响．在不同还原程度和还原温度下，得出了氧化铁还原的表观活化能，由活化能结果和还原动力学模型对实验结果进行分析，确定了氧化铁在不同还原程度和还原温度下的还原限制性环节．     

竖窑烟气净化系统新尝试

介绍了以往石灰竖窑烟气净化系统中出现的问题,并结合实际工程,介绍了竖窑烟气净化的新方法。     

Leachability and fractionation of heavy metals in stainless steelmaking plant dusts

The leachability and fractionation of the selected heavy metals (Cr, Cd, Pb and Zn) in the stainless steelmaking plant dusts were studied by the modified HJ/T299-2007 method, the modified TCLP test and a seven-step sequential extraction procedure. The results show that the stainless steelmaking plant dusts are considered as hazardous materials since at least one of the leachable heavy metals exceeds the corresponding limit levels of State Environmental Protection Administration of China. Pb is the most extractable heavy metals by the sequential extraction procedure, while Cr, Cd and Zn mainly presents in the residual fraction bound to spinel phase and silicates. The mobile heavy metals in the dusts, which present as the species of water soluble, exchangeable species and the species bounded to carbonates and hydroxides, can be estimated as 0.08-1.2% of Cr, 7.6%-31.8% of Cd, 34.1% of Pb, 0.052-0.4% of Zn, respectively.     

反渗透滤筒对脉冲布袋除尘器清灰的影响研究

通过在滤袋内部安装特定的反渗透装置，阻碍诱导气流进入滤袋上部侧壁，减弱负压的影响，试验结果表明加入反渗透滤筒后，滤袋上部负压峰值可以降低50％，而清灰的正峰压基本没有变化，从而提高了滤袋整体的清灰能力。     

控制矿石溜井冲击风流的技术措施

向溜井卸矿将产生冲击风流，风流中央带有粉尘会污染井下空气。文中阐述了设计溜井时须结合矿山条件对溜井的井位、结构型式、井口密闭等采取相应的技术措施。     

新型煤矿粉尘浓度监测系统的设计

为了实现煤矿监控监测系统的高性能运行,提高粉尘监测的可靠性,提出了基于凌阳16位单片机SPMC75F2413A的粉尘在线监测方案.以单片机为核心结合光电传感器设计出了粉尘在线监测系统,给出了粉尘监测及报警器的硬件和软件的实现方案与电路结构.该系统能长时间实时监测粉尘浓度,直接输出粉尘质量浓度值,并通过CAN总线接口实现...     

Irritants and allergens at school in relation to furnishings and cleaning

In order to study the influence of furnishings and cleaning on the indoor air quality at school, 181 randomly chosen classrooms were investigated. The amounts of open shelves, textiles and other fittings were noted, data were gathered on cleaning routines, and a number of pollutants were measured in the classrooms. In classrooms with more fabrics there was more settled dust and the concentration of formaldehyde was higher. Classrooms with more open shelves had more formaldehyde, and more pet allergens in settled dust, and classrooms with a white board, instead of a chalk board, were less dusty. Classrooms mainly cleaned through wet mopping had more airborne viable bacteria but less settled dust than classrooms mainly cleaned by dry methods. In rooms where the desks and curtains were more often cleaned, the concentrations of cat and dog allergen in settled dust were lower. It is concluded that furnishings and textiles in the classroom act as significant reservoirs of irritants and allergens and have an impact on the indoor air quality at school.     

印制板工厂集尘系统的设计思路及实施方案

安全环保以及智能的控制系统是当今设备发展的主流,印制板工厂的集尘系统也应以此为目标去设计和推行.文章首先介绍了当前印制板工厂集尘系统的现况及存在的主要问题,同时分析了实现安全、环保、智能的集尘系统的必要性,并提出了对应的设计思路,介绍了安全、环保、智能的集尘系统的实施方案.