The hot-line cleaning of insulator contaminants has a great significance to prevent pollution flashover.The technique of hot-line cleaning insulator contaminants by water vapor is proposed in this paper.The flashover ...The hot-line cleaning of insulator contaminants has a great significance to prevent pollution flashover.The technique of hot-line cleaning insulator contaminants by water vapor is proposed in this paper.The flashover characteristics of insulator under the procedure of cleaning by hot-line water vapor are tested to investigate the security of cleaning system in the operation.Three kinds of insulator are chosed to carry on the experiment.The average flashover voltage,flashover voltage gradient and withstand voltage in35 kV insulators in hot-line cleaning are measured.The results show that the average flashover voltage and withstand voltage of insulators used for hot-line water vapor cleaning are both larger than the operation phase voltage in 35 kV system.The flashover voltage gradient is larger than usual pollution flashover voltage gradient.The system security can be ensured when there is no overvoltage in the system,which verifies that the insulators cleaning method presented in this paper is effective and reliable.展开更多
针对Φ180 mm MPM连轧管生产线环形加热炉的烟气治理问题,开发了SNCR(选择性非催化还原)-SDS(高活性钙干法脱硫)一体化处理工艺。通过系统分析加热炉烟气特性,创新性地将SNCR脱硝技术与SDS干法脱硫技术有机结合,构建了完整的烟气净化系...针对Φ180 mm MPM连轧管生产线环形加热炉的烟气治理问题,开发了SNCR(选择性非催化还原)-SDS(高活性钙干法脱硫)一体化处理工艺。通过系统分析加热炉烟气特性,创新性地将SNCR脱硝技术与SDS干法脱硫技术有机结合,构建了完整的烟气净化系统。工程应用表明,该技术方案实现了SO_(2)排放浓度≤50 mg/Nm^(3)、颗粒物浓度≤10 mg/Nm^(3)的超低排放标准,年可减少SO_(2)排放量约74.69 t。研究为热轧钢管生产线加热炉的烟气治理提供了可靠的技术方案,具有显著的环保效益和推广应用价值。展开更多
文摘The hot-line cleaning of insulator contaminants has a great significance to prevent pollution flashover.The technique of hot-line cleaning insulator contaminants by water vapor is proposed in this paper.The flashover characteristics of insulator under the procedure of cleaning by hot-line water vapor are tested to investigate the security of cleaning system in the operation.Three kinds of insulator are chosed to carry on the experiment.The average flashover voltage,flashover voltage gradient and withstand voltage in35 kV insulators in hot-line cleaning are measured.The results show that the average flashover voltage and withstand voltage of insulators used for hot-line water vapor cleaning are both larger than the operation phase voltage in 35 kV system.The flashover voltage gradient is larger than usual pollution flashover voltage gradient.The system security can be ensured when there is no overvoltage in the system,which verifies that the insulators cleaning method presented in this paper is effective and reliable.
