萘系分散剂与褐煤之间的相互作用规律研究

Study on Interaction Laws between Naphthalene Series Dispersants and Lignite

4种萘系分散剂与褐煤进行成浆性实验以研究分散剂的用量对水煤浆(CWS)流变性的影响,并选择各分散剂的最佳药剂量进行制浆,通过浓黏曲线确定浆体的定黏浓度。结果表明,分散剂的用量对CWS的流变性有显著的影响,用量过多或过少都会使CWS的表观黏度增加,最佳用药量根据分散剂的结构性质有明显差别,4种萘系分散剂与褐煤均有良好的匹配性,通过分散剂结构的改善,可以显著提高褐煤水煤浆的定黏浓度,从而促进褐煤水煤浆的有效利用。

The influence of dispersant dosage on CWS rheological properties was studied by using 4naphthalene series dispersants and lignite, choosing the optimal dispersant dose to make CWS and determine the slurry concentration of given viscosity. The results show that the dosage of the dispersant has a significant effect on the rheological properties of CWS, and too much or too little can increase the apparent viscosity. The optimal dosage has obvious difference according to the structure properties of different dispersants. 4 naphthalene series dispersants has good matching with lignite, and the concentration of given viscosity can be significantly improved by improving the structure of dispersants,so as to promote the utilization of lignite CWS.