铝电解烟气净化系统新型控制技术的研究与应用

本文对铝电解烟气净化系统控制技术的现状进行了分析 ,并介绍了一种新型的控制系统。其控制思想具有重要的参考价值     

进气灰尘对柴油机磨损的实验研究

通过向柴油机进气系统加入不同粒度的灰尘，研究了进气灰尘粒度对柴油机各零部件的磨损及对柴油机功率的影响。实验结果表明，在实验条件下进气灰尘对柴油机气缸套和活塞环的磨损最大，而轴承的磨损很小。２０－５０μｍ的灰尘与柴油机的磨损影响最大，空气滤清器应尽可能滤去这尺寸范围的灰尘。     

高深直溜井冲击产尘治理技术研究

通过对夏甸金矿高深直溜井卸矿过程中形成的冲击风流和冲击产尘规律进行分析,提出了适用于溜井卸矿的卸压措施,将冲击风速降低至10m/s以内,并在卸压的基础上采用高效湿式除尘器抽尘净化措施对冲击产尘进行治理。实践表明,采用卸压除尘治理措施后,溜井出口巷道内总粉尘浓度由600.8mg/m³降至12.0mg/m³,降尘效率达98%;呼吸性粉尘浓度从166.7mg/m³降至8.0mg/m³,降尘效率达95.2%,有效地解决了冲击产尘污染问题,为金属矿山溜井返尘提供了参考依据。     

Research on KMC-based evolution simulation of dust particles in virtual campus environment

The evolution simulation of dust particles provides an important way to analyze the impact of dust on human beings and the environment. Kinetic Monte Carlo (KMC) method is one of the important researches that carry out dynamic simulation of particle motion. Based on the KMC method, a simulation algorithm of the evolution of dust particles under the influence of the natural factors and human factors in a virtual campus is proposed. The experimental results show the accuracy and effectiveness of the simulation algorithm by contrast with the actual results. The simulation and visualization results will provide a reference for city planning and pollution prediction.     

钻孔口旋转水射流吸除尘试验研究

为解决钻孔产生粉尘的治理问题,提出了钻孔口旋转水射流吸除尘技术,分析了旋转水射流吸除尘原理,进行了钻孔口旋转水射流吸除尘试验。结果表明,钻孔口采用旋转水射流吸尘除尘技术降尘效果明显,且系统简单、使用方便。     

Modeling of dust air flames

This study analyzes a premixed dust–air flame, under conditions where a homogeneous gas-phase reaction front can exist. Discussion on four possible flame types is provided. A solution is obtained for the burning velocity of a flammable dust–air flame in both fuel and oxygen limiting cases. A sensitivity analysis is used to analyze the features controlling the dust burning. It is shown that vaporization is significant for fuel limiting conditions; however, does not play a major role in oxygen limiting cases. The calculated burning velocity shows good agreement with available experimental data for coal–dust–air flames.     

混凝土搅拌站除尘系统设计探讨

分析混凝土搅拌站的粉尘来源,指出影响除尘效果的粉尘特性因素,介绍混凝土搅拌站除尘过滤面积的计算方法和除尘器的选型原则,分析混凝土搅拌站主机粉尘控制方式及其对粉料计量误差的影响.以商品混凝土搅拌站为例,通过采取搅拌站主体外包装全封闭、骨料配料及上料环节全封闭、粉料筒仓采用强制式除尘器,以及改变主机进水方式等措施,使其达到...     

提高闪速炉烟气收尘效果的实践

就贵溪冶炼厂三期改造后闪速炉烟气收尘系统出现的问题进行了分析,并对提高收尘效率等一系列技术改造进行了总结。