燕山大学学报2016，Vol.40Issue(4)：342-347,6.DOI:10.3969/j.issn.1007-791X.2016.04.008
电除尘器内转炉煤气爆炸与泄爆过程的数值模拟
Numerical simulation and experimental study on coverter gas explosions and venting in electrostatic precipitator
摘要
Abstract
Converter gas must be purified by using an electrostatic precipitator when it is recycled.Aimed at the explosible character-istics of converter gas when it is mixed with oxygen, theoretical analysis and numerical simulation on the development of temperature and pressure of its explosion and venting were performed by changing the parameters of initial pressue, temperature, oxygen content and venting valve′s diameter.The results show that oxygen content has great influence on the explosion, the following influence factor is initial temperature and initial pressure.The highest development rate of temperature could reach to 7.5×105 K/s and the highest development rate of pressure could reach to 123 MPa/s. The maximum explosion pressure increases linearly with the initial pressure, but decreases rapidly with the initial temperature.The venting time could reach to 1.07 s when the diameter of the vales is 1 400 mm.Three vent valves which diameter is 1 200 mm is the best considering the explosion venting efficiency, economical and practicability.The simulation results provide a basis for the installation of vent valve for the converter gas purification.关键词
电除尘器/预混燃烧/泄爆/数值模拟/转炉煤气Key words
ESP/pre-mixed combustion/explosion venting/numerical simulation/converter gas分类
矿业与冶金引用本文复制引用
丁志江,王丹,肖立春..电除尘器内转炉煤气爆炸与泄爆过程的数值模拟[J].燕山大学学报,2016,40(4):342-347,6.基金项目
河北省自然科学基金资助项目 （）
