水煤浆是一种新型煤基洁净燃料，作为代用燃料，已受到全世界的普遍关注。对于工业生产水煤浆，分散剂是影响水煤浆质量的关键因素，而利用精制棉废水制备水煤浆更是资源化利用的方法之一。 　　本论文对以精制棉废水为原料制备的水煤浆分散剂的结构及制浆性能，进行初步研究，确定了木质素提取和改性的最佳工艺参数：酸析法提取木质素的最佳反应温度范围为60℃～80℃、最佳反应pH在3.30左右；磺化法改性木质素最佳反应温度范围为80℃～90℃，反应时间要控制在180min，Na2SO3最佳投加量为0.8g/g（木质素）、HCHO最佳投加量为0.6mL/g（木质素）。 　　论文通过实验室自制分散剂对配煤制浆性能影响的试验研究，确定了制备水煤浆的最佳磺化木质素的添加量为1.2%，再此条件下，浆体可达到67.86%的最高制浆浓度和820 mPa·s的浆体最低粘度，且流动性和稳定性都能达到工业制备水煤浆的要求。试验还进行了直接稀释精制棉黑液制备水煤浆的研究，确定其优化方案为将废水稀释1至2倍，可以保证制浆浓度在62%以上，粘度在1000mPa·s以下，稳定性符合炉前制浆要求。 　　同时，试验将1#水煤浆(由自制分散剂制成)，分别与2#水煤浆（由稀释到一定浓度的精制棉废水制成）和3#水煤浆（由现行市场上使用的分散剂制成）进行性能比较。试验发现，实验室自制磺化木质素在性能上与商品磺化木质素相差不大；通过稀释到一定浓度的精制棉废水直接制备的水煤浆，其性能与磺化木质素有一定差距，且局限于炉前制浆。 　　本文针对精制棉废水的特性，利用水煤浆技术的基本原理，系统地进行了精制棉废水综合利用的试验研究，为解决精制棉工业污染问题治理提供参考，同时也为木质素的综合利用提供了基础参数。

CWM(Coal-Water mixture) is a new clean coal-fuel. As an alternative fuel, it has been attended by the world. For the industrial production of CWM, the dispersant is the key factor of quality. Preparation of CWM by refined cotton wastewater is one of the methods of resource utilization of refined cotton wastewater. 　　This experiment preliminarily studies the dispersant structure and performance of CWM which be made of refined cotton wastewater, and determines the optimum process parameters of extraction and sulfonation: the optimal reaction temperature range of extraction of lignin by acid is from 60℃ to 80℃, and the optimal reaction pH is about 3.3; the optimal reaction temperature range of sulfonation of lignin is from 80℃ to 90℃, and the optimal reaction time is about 180 minutes, and the best dosage of Na2SO3 is 0.8g/g(lignin), and the best dosage of HCHO is 0.6mL/g(lignin). 　　By experiment research on performance of self-made dispersant for CWM in laboratory, it determines the best dosage of sulfonated lignin is 1.2%. In this condition, CWS can get to the highest concentration of 67.86% and the lowest viscosity of 820 mPa?s. and liquidity and stability to achieve the industry requirements. The experiment also had researched the preparation of CWM which be made of refined cotton wastewater which be diluted, and determined the prioritization scheme that wastewater will be diluted 1or 2 times. This can guarantee more than pulp concentration of 62%, and less than viscosity 1000mPa?s, and stability meet the requirement. that the CWM must be prepared before entering boiler. 　　Meanwhile, this experiment will compare the performance of 1#CWM (made by the self-made dispersant) with the Performance of 2#CWM (made by diluted refined cotton wastewater) and 3#CWM (made by the dispersant which be sold on current market) respectively. The experiment found that the performance of sulfonated lignin which be made in laboratory is as the same as the one which be sold on current market. By diluting refined cotton wastewater to make the CWM directly, there is a gap with the performance of Sulfonated lignin,and it is limited that the CWM must be prepared before entering boiler. 　　For the characteristics of refined cotton waste, this paper carried out experimental study on the comprehensive utilization of refined cotton wastewater by the numbers. These work provide references to solve the problem of controlling industrial pollution of refined cotton industry, and also to offer the basic parameters for the comprehensive utilization of lignin.