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1.绪言目前为解决块煤在运输、贮藏时自燃、粉尘飞散等安全上的问题,提出制备高浓度水煤浆。这是将煤转为液体燃料的一种方法。在实现以煤代油的能源结构中,这是研究最广泛,使之实现工业化的一种煤流体化技术。水煤浆是含有高浓度煤且流动性高的流体燃料。这就要把煤破碎到很细的粒径,而且要添加少量表面活性剂,使煤粒均匀地分散在水中。所以制备水煤浆的成本高,不仅因细粉碎,添加表面活性剂也是成本高的原因。减少表面活性剂添加量降低成本就成
1. INTRODUCTION At present, in order to solve the safety problems of lump coal such as spontaneous combustion and dust scattering during transportation and storage, it is proposed to prepare high-concentration coal water slurry. This is a way of converting coal into liquid fuels. This is the most widely researched and industrialized coal fluidization technology in realizing the energy structure of replacing oil with coal. Coal-water slurry is a fluid fuel containing high concentrations of coal and high fluidity. This will crush the coal to a very fine particle size, but also to add a small amount of surfactant, coal particles evenly dispersed in water. Therefore, the preparation of coal-water slurry costs high, not only because of finely divided, adding surfactant is also a high cost reasons. Reduce the amount of surfactant to reduce the cost to become