Identify of flow patterns in bubbling fluidization

Yunning Li, Hui Fan, Xianfeng Fan

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
36 Downloads (Pure)

Abstract

Bubbling fluidization has been widely applied in process industries, such as power generation from coal, renewable energy production, gasification and pyrolysis. In this study, we attempted to predict solid flow patterns in a bubbling fluidized bed based on operational conditions, the air distributor and particle velocity. We first investigated the effect of operational conditions and the air distributor on solid/gas flow patterns, and investigate the correlations between solid/gas flow patterns with the solid mixing, solid and gas contact, and bubble behaviour within bubbling fluidized beds by using positron emission particle tracking (PEPT). A ‘Flow Pattern Parameter (FPP)’ is then proposed to identify the solid flow pattern in a bubbling fluidized bed. The ‘Flow Pattern Parameter (FPP)’ consists of particle kinetic energy, bed aspect ratio (H/D), pore size of air distributor, minimum fluidization velocity, and superficial gas velocity. The results show that solid flow patterns in the bubbling fluidized bed can be clearly classified based on the Flow Pattern Parameter. Different flow pattern corresponds to a certain range of the Flow Pattern Parameter.
Original languageEnglish
Pages (from-to)455-464
Number of pages10
JournalChemical Engineering Science
Volume117
Early online date17 Jul 2014
DOIs
Publication statusPublished - 27 Sept 2014
Externally publishedYes

Fingerprint

Dive into the research topics of 'Identify of flow patterns in bubbling fluidization'. Together they form a unique fingerprint.

Cite this