อุทกพลศาสตร์ของของผสมที่มีขนาดอนุภาคและความหนาแน่นแตกต่างกันในฟลูอิไดซ์เบดแบบหมุนเวียน
This research was conducted in a cold flow circulating fluidized bed (CFB) having diameter and height of riser of 5 and 400 cm., respectively. The objective of this research was to study the hydrodynamics of glass beads and a mixture of glass beads with 6% HDPE (High-density polyethylene). The glass...
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| 格式: | Theses and Dissertations |
| 語言: | Thai |
| 出版: |
จุฬาลงกรณ์มหาวิทยาลัย
2006
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| 主題: | |
| 在線閱讀: | https://digiverse.chula.ac.th/Info/item/dc:35286 |
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| 機構: | Chulalongkorn University |
| 語言: | Thai |
| 總結: | This research was conducted in a cold flow circulating fluidized bed (CFB) having diameter and height of riser of 5 and 400 cm., respectively. The objective of this research was to study the hydrodynamics of glass beads and a mixture of glass beads with 6% HDPE (High-density polyethylene). The glass beads having a mean diameter of 512 micron and particle density of 2200 kg/m[superscript3]. The HDPE was elliptic shape having equivalent diameter of 4477 micron and particle density of 860 kg/m[superscript3]. The superficial gas velocities were used 7, 8 and 9 m/s. The results showed that the flow patterns of glass beads in riser changed from dense phase transport regime into fast fluidization regime when superficial gas velocity increased. The existing of HDPE in the system help decreasing the accumulation of glass beads at riser wall leading to an increase of glass bead velocity. In conclusion the coarse particles in the mixture improved the flow of fine particles in the riser. |
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