Shin Yu-Jen, Shen Yun-Hwei
Department of Resources Engineering, National Cheng Kung University, Tainan, Taiwan, ROC.
J Hazard Mater. 2006 Sep 1;137(1):152-6. doi: 10.1016/j.jhazmat.2005.12.054. Epub 2006 Jun 8.
This study explored the feasibility of using waste organic solvents as substitutes for water to prepare coal slurries. The rheological properties of coal-2-propanol slurries were examined and compared with that of coal-water slurry (CWS). The good compatibility between coal particles and 2-propanol resulted in stable particle suspension in slurry which usually exhibit Newtonian behaviour. However, coal-2-propanol slurries usually shown higher viscosities comparing to CWSs at a fixed solid loading due to swelling of coal by 2-propanol. In addition, coal-2-propanol slurries demonstrated lower settling rates (higher stability) compared to CWSs presumably due to good compatibility between coal particles and 2-propanol. Finally, coal-2-propanol slurries formed bulky sediment with loose structure even coal particles suspended in 2-propanol were more stable than coal particles in CWSs.
本研究探讨了使用废有机溶剂替代水来制备煤浆的可行性。研究了煤-2-丙醇浆体的流变特性，并与水煤浆（CWS）进行了比较。煤颗粒与2-丙醇之间良好的相容性导致浆体中颗粒稳定悬浮，通常表现出牛顿流体行为。然而，由于2-丙醇使煤发生溶胀，在固定固体负载量下，煤-2-丙醇浆体的粘度通常比水煤浆更高。此外，与水煤浆相比，煤-2-丙醇浆体的沉降速率更低（稳定性更高），这可能是由于煤颗粒与2-丙醇之间具有良好的相容性。最后，即使悬浮在2-丙醇中的煤颗粒比水煤浆中的煤颗粒更稳定，但煤-2-丙醇浆体仍形成了结构松散的大块沉积物。
