Abstract
Pressurized conveying of waste tire powder was one of the key challenges in the feeding process. In this paper, the characteristics of powder bed compression behaviors during gas pressurization were studied by a visualization tank. Compared with the pulverized coal, the higher compressibility of waste tire powder bed revealed the serious consolidation problem in the high-pressure hopper. The source of bed consolidation was fluid dynamic force and constrained space. The intrusion probe was applied to the consolidation test of the compressed powder bed. The results showed that the gas pressurization enhanced the consolidation and the consolidation distribution existed along the axial direction. The maximum relative intrusion resistance was located at the compaction height of bed from 10.2 % to 22.2 %. This study was helpful in further optimizing the operation of pressurized conveying in the dry-fed gasification process of waste tire powder.
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