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| 1 | 气液交叉流脱除亚微米级颗粒物的研究显示文摘亚微米级颗粒是化学工业尾气排放物的重要组成,其脱除效率是影响排放指标进一步提高的关键。基于颗粒捕获机理,建立了气液交叉流系统脱除效率的理论模型,并对该系统脱除亚微米级颗粒的特性进行了理论分析和实验研究。实验结果表明,低气速、高液柱群比表面积、高气液相温差有利于提升系统的脱除效率。粒径0.05~0.6μm,脱除效率随粒径的增大呈现先降低后增加的趋势,与理论值趋势一致,表明系统中同时存在惯性碰撞、拦截、布朗运动等三种脱除机理。相对于理论值,实验脱除率整体偏大,表明颗粒在高湿环境中易凝并,有助于颗粒在碰撞和拦截作用下的脱除。由实验数据外推,研究条件下,液柱单元排数为1300时,亚微米级颗粒质量脱除效率预计可达90%。 | 徐挺 魏文韫 孙白宇 杨雅琪 刘凌岭 余徽 Thomas Laminger Wilhelm Hoeflinger | 2017 | 高校化学工程学报2017，31，4： | 7 |
| 2 | INFLUENCE OF AIR HUMIDITY ON THE SUPPRESSION OF FUGITIVE DUST BY USING A WATER-SPRAYING SYSTEM显示文摘One of the main origins of fugitive dust emission arises from bulk handling in quarries or mines, in par- ticular, from bulk materials falling from a hopper or a conveyor belt. Water-spraying systems, using two-phase nozzles, are one of the methods to suppress such dust emission. In this work we tried to develop a mathematical model to cor- relate air humidity, water flux through the nozzle and the dust (in particular PM10) emission, in order to improve the ap- plication and efficiency of these systems. Sand from the Yellow River in China was dropped from a conveyor belt into a dust chamber at 1 kg?min-1, wherefrom the emitted dust was sucked off and quantified via a cascade impactor. A two-phase nozzle was installed in the dust chamber with a water flux through the nozzle of 1.2 to 3 L?h-1, whereas the relative air humidity changed between 55 and 73%. Dust emission was found to be linearly dependent on relative air humidity. Furthermore model equations were developed to describe the dependence of PM10 emission on water flux and relative air humidity. | Peter Werner Grundnig Wilhelm Hoeflinger Gerd Mauschitz Zechang Liu Guiqin Zhang Zhiqiang Wang | 2006 | China Particuology2006，4，5： | 6 |
| 3 | 工业粉体下落过程粉尘排放特性的实验研究显示文摘根据与维也纳工业大学化学工程研究所共同确定的实验方案,在实验室开发并设计了一套自由下落装置,研究粉体下落过程中粉尘的排放特性。通过实验主要测定下落高度、空气湿度和质量流量对粉尘排放的影响。实验结果表明,下落高度和空气湿度对粉尘排放均有影响,且空气湿度对粗粒子的排放影响较大,对细粒子影响较小;随着质量流量的增加,粉尘产生率逐渐减小,但质量流量的增加也会增加粉尘浓度,加重了对工人的危害。建立了影响因素与粉尘产生率之间的数学模型,经检验,二者之间存在显著相关,实测值与理论计算值基本一致,可以应用已建立的数学模型定量评价粉尘产生量。 | 张桂芹 刘泽常 李敏 Wilhelm Hoeflinger Gerd Mauschitz | 2006 | 环境科学与技术2006，29，11： | 6 |
| 4 | 物料下落过程中随机性粉尘的产生特性及其数学模型显示文摘为了研究物料下落过程中随机性粉尘的产生特性,在实验室开发并设计了一套自由下落装置。通过实验主要测定空气湿度和质量流量对粉尘产生率的影响。结果表明,空气湿度对粉尘排放有影响,且对粗细粒子的影响程度不同;当空气湿度达到一定数值时,粉尘产生率已很小,此后再增加空气湿度,粉尘产生率基本不变。随着质量流量的增加,粉尘产生率逐渐减小,但粉尘浓度会增加,对工作场所工人的身体健康及环境带来严重危害。根据实验数据建立了空气湿度和质量流量与粉尘产生率之间的数学模型,经验证,相关性很好,实测值与理论计算值基本一致,可以定量评价不同质量流量下不同空气湿度的粉尘产生率。 | 张桂芹 刘泽常 Wilhelm Hoeflinger Gerd Mauschitz | 2008 | 山东农业大学学报(自然科学版)2008，39，1： | 4 |
| 5 | 高湿气溶胶颗粒浓度在线检测操作条件显示文摘采用光散射法测量湿法除尘系统的气相颗粒浓度与粒度分布时,测量结果易受颗粒吸湿、凝雾以及雾沫夹带等影响。为准确测量气溶胶浓度,需对采样气流进行稀释以降低相对湿度,促使液滴蒸发。基于液滴蒸发动力学方程,研究了液滴蒸发时间与液滴粒径、混合气温度、相对湿度和液滴浓度的关系。结果表明,在液滴温度20℃、气相温度20~40℃及液滴浓度不大于2×10~4 P×cm^(-3)时,出口气相相对湿度不高于15.7%时,粒径0.2~5μm的水滴均可在稀释器内完全蒸发。研究得到了不同气相温、湿度及液滴浓度下的临界蒸发操作条件。以5μm液滴为例,气相温度为20℃,气相相对湿度为18%时,临界蒸发液滴数浓度为104 P×cm^(-3)。实验表明加载稀释器时在临界蒸发操作条件下测得的颗粒物粒径分布与真实粒径分布吻合良好。 | 李兵 魏文韫 刘凌岭 杨兴灿 余徽 朱家骅 Wilhelm Hoeflinger | 2016 | 高校化学工程学报2016，30，6： | 1 |
| 6 | Fine Particulate Pollution Characteristics in Jinan City显示文摘The characteristics of fine particulate pollution(PM10 and PM2.5) were measured at urban and suburban sites in Jinan during the 2008-2009 heating and non-heating seasons.The results showed that PM10 and PM2.5 pollution was quite serious,and PM mass concentration was higher during the heating season than the non-heating season.PM was the highest in the chemical factory and lowest in the development zone.The mass concentrations of PM10 and PM2.5 were linearly related,and the mass concentration ratio of PM2.5/PM10 was up to 0.59 in urban areas.PM pollution in Jinan was related to local meteorological factors:PM2.5 mass concentration and humidity were positively correlated,and PM2.5 mass concentration was negatively correlated with both click on the temperature and wind speed,although wind speed varied more. | Zhang Guiqin Wang Zhaojun Liu Yutang Wilhelm Hoeflinger | 2010 | Chinese Journal of Population,Resources and Environment2010，8，4： | 0 |
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