Method for preparing high-alkali coal water slurry from coking wastewater

The invention discloses a method for preparing high-alkali coal water slurry from coking wastewater. The method comprises the following steps: mixing and stirring high-alkali coal powder, coking wastewater and three additives to prepare the coal water slurry; the additives comprise a stabilizer, a formaldehyde aqueous solution, a dispersant, an emulsifier and the like. Compared with the prior art, the method has the advantages that low-cost treatment of coking wastewater and viscose wastewater can be realized while the coal water slurry is prepared from the high-alkali coal, the gasification efficiency of the obtained coal water slurry is remarkably improved, and meanwhile, the obtained coal water slurry has relatively ideal slurry concentration, stability and flowability; and the process requirements of the gasification furnace can be better met. 本发明公开了一种焦化废水制备高碱煤水煤浆的方法，其包括：将高碱煤粉体、焦化废水及3添加剂混合搅拌制成水煤浆；所述添加剂包括稳定剂、甲醛水溶液、分散剂及乳化剂等。与现有技术相比较，本发明可以在利用高碱煤制备水煤浆的同时，实现焦化废水、粘胶纤维废水的低成本处理，且使得所获水煤浆的气化效率显著提高，同时还使得所获水煤浆具有较为理想的