| 高温橡胶废气在电滤装备中的流场特性研究 |
| Flow Field Characteristics of High Temperature Rubber Flue Gas in Electrostatic Precipitator |
| 投稿时间：2017-06-17 修订日期：2017-06-17 |
| DOI： |
| 中文关键词: 高温橡胶废气 多场耦合 流场特性 净化效率 |
| 英文关键词: high temperature rubber flue gas multi-field coupling flow field characteristics dust removal efficiency |
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| 中文摘要: |
| 为研究板式电滤装备对橡胶行业燃烧所产生高温烟气的净化效果，建立了板式电滤装备的物理模型，分析板式电滤装备内部复杂的流场特性以及不同温度橡胶烟气对装备内部电场分布和净化效率的影响，利用FLUENT对烟气温度为323～673 K时板式电滤装备的收尘过程进行了数值模拟。结果表明，在相同放电电压下，烟气的温度越高，电荷密度越低，电场强度越小，烟气中细颗粒物所受静电力越小；温度升高会增强细颗粒物与流体间的相互作用，表现在气体粘度和颗粒曳力增大，从而降低了净化效率，尤其是对粒径在1 μm以下的细微颗粒物，其净化效率减小得更为明显。 |
| 英文摘要: |
| In order to study the dust removal efficiency of high-temperature flue gas from rubber industry combustion in the plate electrostatic precipitator，the physical model of plate electrostatic precipitator was established，its internal complex flow field characteristics was studied，the influence of rubber flue gas in the electric field distribution and dust removal efficiency of the equipment at different temperatures were analyzed.Numerical simulation of the dust collection process for flue gas at 323～673 K was established by using Fluent software.The results showed that at the same discharge voltage，the higher the temperature，the lower the current density，the smaller the electric field strength，and electrostatic force of fine particles in flue gas.Elevated flue gas temperatures also enhanced the interaction between particles and fluids，manifested in the increase in gas viscosity and particles drag force，thereby reduced the purification efficiency，particularly the decrease of purification efficiency was more obvious when fine particles size was below 1 μm. |
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