Heat transfer to boiling liquid mixtures in a vertical tube thermosiphon reboiler

✍ Scribed by Hamid Ali; S.S. Alam

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 115 KB
• Volume: 7
• Category: Article
• ISSN: 0894-1777
• DOI: 10.1016/0894-1777(93)90271-j

✦ Synopsis

In order to solve the fouling problems in boiling processes, a new boiling device was designed by adding solid particles to the boiling tube. In this paper, theoretical analysis and experimental study of boiling heat transfer in the three-phase fluidized bed were carried out. On the basis of the analysis of the heat transfer characteristics of three-phase fluidized beds, a mathematical model of the heat transfer coefficient of three-phase fluidized boiling was developed. The experiments show that, due to the presence of the particulate solids, the boiling heat transfer is enhanced. The boiling heat transfer coefficient of the three-phase fluidized boiling is about 2 times that of the vapor-liquid two-phase one, and the flow stability of the boiling process in the three-phase fluidized boiling is better than that in the vapor-liquid two-phase boiling. The fluidized particles can rub the heat transfer wall to prevent and to clean the fouling.