烟气雾滴捕集采样装置技术的研究及应用

Research and Application of Trapping and Sampling Device for Mist Droplets in Flue Gas

烟气中浆液滴含量的测定是评价燃煤电厂烟气湿法脱硫设备除雾器性能的一项重要指标,烟气中雾滴捕集采样是除雾器性能试验的关键。在实际应用中由于目前雾滴捕集装置的诸多技术问题使得雾滴捕集试验的结果与实际情况有较大差距。一种新型烟气雾滴捕集采样装置的开发解决了烟气雾滴采样中遇到的问题,实现了自动等速采样,省去了预测烟气测量点流速的程序,避免了测量结果受测试烟道流场随时间变化影响大、准确性差等缺点。

To evaluate the performance of demisting device in flue gas wet desulfurizing equipment on coal-fired power plant, the content of mist droplets in flue gas must be measured. It is the key step in evaluating the performance of demisting device to trap and sample the mist droplets in flue gas. There are large disparities between the testing results and the actual situation in mist droplets trapping due to many technical obstacles. In this paper, a new type of trapping and sampling device of mist droplets in flue gas is introduced. The development of the device solves the problems encountered in the sampling of flue gas mist droplets, which realizes sampling automatically and regularly, and eliminates the procedure for predicting the flow rate of the flue gas measuring point, thereby the measurement result can be avoided to be affected.