摘要
采用水煤浆技术处理和回用兰炭废水,分别将神木煤与去离子水或兰炭废水用MF,ZDS-1,NNO和AES四种添加剂制备水煤浆,研究样品的成浆性、流变性和稳定性,通过不同组别样品对比,分析兰炭废水对成浆性能的影响和添加剂的适配性。结果表明:兰炭废水水煤浆最大成浆质量分数比去离子水水煤浆最大成浆质量分数降低,根据添加剂的种类,质量分数降低0.62%~0.87%,但成浆质量分数仍在60%以上,达到工业应用要求;兰炭废水水煤浆具有更显著的假塑体特性,有利于工业运输、雾化和燃烧;兰炭废水可以降低水煤浆析水率,提高稳定性;兰炭废水会使不同添加剂成浆效果发生变化,对比其他三种添加剂的兰炭废水水煤浆,ZDS-1添加剂受兰炭废水影响最小,成浆效果较好,且制备的水煤浆具有相对较好的流变性和稳定性。
Coal water slurry technology was used to treat and reuse blue coke wastewater.The slurryability,rheology and stability properties of coal water slurry prepared from Shenmu coal and deionized water or blue coke wastewater were investigated and four kinds of additives including MF,ZDS-1,NNO and AES were used for adaptability studies.The results show that the maximum slurry mass fraction produced by using the blue coke wastewater decreases compared with that produced by using the deionized water.Depending on different additives,the mass fraction decreases by approximately 0.62%to 0.87%,but the slurry mass fraction remaines still above 60%,which meets the requirements of the industrial applications.In addition,the coal blue coke wastewater slurry possesses more obvious pseudoplastic properties,which are beneficial to the industrial transportation,atomization and combustion.Furthermore,the blue coke wastewater can improve the stability of the coal slurry,and change the slurrying effect of a variety of additives.Compared with the other additives,the ZDS-1 additive is the least affected one by the wastewater and has the best dispersion effect among the four kinds of additives,and the ZDS-1 additive has the best stabilizing effect in the coal blue coke wastewater slurry.
作者
李得第
刘建忠
张伟明
翁国柱
王建斌
曹欣玉
LI Dedi;LIU Jianzhong;ZHANG Weiming;WENG Guozhu;WANG Jianbin;CAO Xinyu(State Key Laboratory of Energy Clean Utilization,College of Energy Engineering,Zhejiang University,310027 Hangzhou,China;Shenzhen Daxiang Environmental Water Technology Company Limited,518000 Shenzhen,China)
出处
《煤炭转化》
CAS
CSCD
北大核心
2020年第6期40-47,共8页
Coal Conversion
基金
国家重点研发计划资助项目(2016YFB0600505).
关键词
水煤浆
兰炭废水
废水回用
成浆性能
添加剂
coal water slurry
blue coke wastewater
wastewater recycling
slurry property
additive
