Abstract: Quartz sand filtration with added ingredients was used to purify polluted NHD solution (a decarburizing/desulfurizing reagent mainly consisting of polyethylene glycol dimethyl ether，developed by Nanjing Chemical Industry Company). Quartz sand particle size of the filter was 0.60～0.80 mm，the thickness of the layer in the bed was 600mm.The ingredients were used to modify the surface of the solid impurities of the polluted NHD solution. The influence factors of filtration effectiveness，including ingredients particle size，the amount of ingredients，operating pressure were studied. The optimal condition of the filtration for polluted NHD solution being added in ingredients was determined. The experimental results showed that: at room temperature，ingredients particle size of 20～25μm，the amount of ingredients was m(ingredients): m(solid impurities)＝0.32，operating pressure = 0.03MPa，solid impurities removal was up to 92.3%，and the absorption property of NHD solution remained unchanged.

摘要： 采用床高为600 mm、粒径为0.60～0.80 mm的石英砂过滤器，通过添加配料对NHD溶剂中固体杂质进行表面改性处理，然后对添加配料后的NHD溶剂进行净化处理，研究了配料粒径、添加量及操作压力等因素对过滤效果的影响，确定了对添加配料后的NHD溶剂进行过滤的最佳操作条件。实验结果表明：在室温，配料粒径为20～25 μm、添加量为m(配料)∶m(固体杂质)＝0.32、操作压力为0.03 MPa的条件下，NHD溶剂经过滤后，固体杂质去除率可达92.3％，且处理后的NHD溶剂的吸收性能未变。