PARTICLE ELECTROSTATIC COAGULATION AND ITS APPLICATIONS IN DUST CONTROL

Fine particulates instead of others create particulate pollution and they are easier to escape from almost all conventional collectors of low-or medium-efficiency. It is of practical significance to take full advantages of particle coagulation by electrostatic forces to upgrade the collentors‘ performance. This paper investigates the main mechanisms of coagulation, an possiboie trostatic forces existing in the collectors and their effects on the particle coagulation. To make particle kinetic coagulation electrostaticaUy enhanced be a step of the conventional collectors‘ operations,certain conditions should be created through some modifications of the collectors. Based on that, the authors suggest that a precharger electro-cyclone technique be applied to improve the performance of common cyclones still widely used in many places. And a preliminary semi-industrial test has been carried out at Jiawang Power Station, Xuzhou, Jiangsu Province, and the results show that the modified cyclone increases its efficiency from about 800% to. 92-94%.     

选煤厂破碎筛分车间煤尘治理技术途径的研究

本文从阐述选煤厂破碎筛分车间传统除尘方式及存在问题入手,分析煤尘及尘源特性,提出应区别尘源类型分别设置除尘系统,以替代以往不分尘源类型设置单一合并除尘系统的做法,并对双系统与单一合并系统进行了比较。     

改进选煤厂防尘技术的有效途径探讨

本文分析了选煤厂煤尘污染严重的主要原因，并对改进防尘工作的有效途径进行了探索。所提建议对尽快提高选煤厂防尘工作水平将有很大帮助。     

一种喷射型粉尘预荷电器的实验研究

研制了一种以金属拉伐尔管为阳极，管喉部装针状放电阴极的粉尘预荷电装置。由于含湿空气通过该装置的电晕放电场时急剧膨胀，产生大量的带电冰气溶胶。实验测定了用于产生带电冰气溶胶的有效电流和冰气溶胶对粉尘预荷电的效果。并探讨了将这项技术用于除尘实践的可能性。     

净化装置压力损失测试计算

本文分析了表示净化装置性能之一的压力损失测试计算中存在的问题,提出了较全面的计算公式,对各净化装置的压力损失提出了可比计算方法并辅以实例加以说明。     

一种喷射型粉尘预荷电器的实验研究

研制了一种以金属拉伐尔管为阳极，管喉部装针状放电阴极的粉尘预荷电装置。由于含湿空气通过该装置的电晕放电场时急剧膨胀，产生大量的带电冰气溶胶。实验测定了用于产生带电冰气溶胶的有效电流和冰气溶胶对粉尘预荷电的效果。并探讨了将这项技术用于除尘实践的可能性。