ABSTRACT

In this study, a three-level Box-Behnken design of experiments coupled with response surface methodology was applied to investigate the effects of the operating parameters (solid content of the feed, feed pressure and insertion depth of the vortex finder) on the separation results (ash content and yield of the overflow) of a three-stage cone water-only cyclone. The results showed that the solid content of the feed and insertion depth of the vortex finder impacted the ash content and yield of the overflow positively, while the feed pressure behaved negative affection. The reasons behind the operating parameters as they affected the separation results were explained via simulations. Then, the effects of the interactions of the feed pressure and solid content of the feed on the separation results were evaluated. The affecting degrees of the feed pressure were positively influenced by the solid content of the feed, while such degrees of the solid content of the feed were negatively impacted by the feed pressure. Finally, the optimal operating parameters combination (clean coal ash content was required as 10%) was determined as 10.85% solid content of the feed, 0.056 MPa feed pressure and 49.50 mm insertion depth of the vortex finder, respectively.

摘要

在这项研究中，应用三级 Box-Behnken 实验设计和响应面方法来研究操作参数（进料的固体含量、进料压力和涡流探测器的插入深度）对分离结果的影响。三级锥形纯水旋流器的（灰分和溢流产率）。结果表明，进料含固量和旋涡器插入深度对溢流灰分和收率有正向影响，进料压力对溢流产生负向影响。通过模拟解释了操作参数影响分离结果的原因。然后，评估了进料压力和进料固体含量的相互作用对分离结果的影响。进料压力的影响程度受进料含固量的正向影响，而进料含固量的这种程度受进料压力的负向影响。最后，确定最佳操作参数组合（要求洁净煤灰含量为 10%）分别为进料固体含量 10.85%、进料压力 0.056 MPa 和涡流器插入深度 49.50 mm。