火力发电厂燃煤飞灰润湿性能

化学团聚是控制燃煤电厂细微颗粒排放最有效的方法之一。颗粒物被团聚剂润湿是化学团聚的首要步骤。以小龙潭电厂燃煤飞灰为对象，采用激光粒度仪研究了燃煤飞灰在十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS)和Triton X 100(TX100)三种润湿剂溶液中的润湿性能，考察了润湿剂浓度、温度对燃煤飞灰润湿性能的影响。结果表明：水仅能将飞灰颗粒中的PM^₁₀+部分全部润湿，0.25%的SDS溶液中PM_2.5⁺可全部润湿，1%的SDS及0.4%的SDBS溶液中PM₁⁺可全部润湿；TX100溶液在低浓度条件下具有较强的润湿飞灰颗粒的能力，且0.1%的TX100溶液对细微颗粒的润湿性能较好；温度从20℃上升到60℃，润湿剂溶液表面张力降低，飞灰的润湿性能增强。鉴于飞灰在三种润湿剂中良好的润湿性能，三种润湿剂均可作为团聚剂组分以促进燃煤飞灰中的细微颗粒润湿进而被团聚成为容易脱除的大颗粒。

Wettability of fly ash from coal fired power plant

Chemical agglomeration is one of the most effective methods to remove fine particles from coal fired power plants.The wetting of particles by agglomeration agent droplets plays an important role in the chemical agglomeration processes.The effect of wetter concentration and temperature on the wettability of the fly ash from Xiaolongtan power plant in three different wetting agents [sodium dodecyl sulfate(SDS),sodium dodecyl benzene sulfonate(SDBS) and Triton X 100(TX100)] was investigated.Laser particle size...