生物质水煤浆及添加剂的研究

将农村废弃水稻秆烘干磨成粉末后，以一定的比例与煤粉掺混制备生物质水煤浆。研究添加剂类型、添加剂掺混量和剪切速率对生物质水煤浆成浆特性的影响，以及生物质水煤浆的稳定性。结果表明：单一离子型和单一非离子型添加剂对生物质水煤浆的制浆效果不好，且当生物质掺混量增加时，生物质水煤浆的表观黏度上升；而离子型与非离子型添加剂按一定比例复配后的制浆效果较好，并得出最佳复配方案：MF∶ST=4∶1和MF∶02=6∶1。生物质水煤浆的稳定性能优良，可稳定7 d以上。

Evaluation of surfactants used in biomass coal-water slurries

After the rice-stalks were dried and powdered,certain amounts of the rice stalk powders were mixed with coal to prepare the biomass coal-water-slurries.Influence on the slurry ability and stability of biomass CWS with different type and dosage of additives,and different shear rates were studied.The results show that the slurry ability is ineffective when adds the sole ionic or non-ionic surfactants in biomass CWS,and the higher dosage uses,the higher apparent viscosity of biomass CWS is.However,the slurry ability of biomass CWS is improved after using mixed surfactant with ionic and non-ionic surfactants at a range of different percentage,and the optimum scheme is MF∶ST=4∶1and MF∶02=6∶1.The stability of biomass CWS can last more than a week,which is considered excellent.