Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 53, Issue 1, Pages 415-427Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ie402031t
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Funding
- Ministry of Science and Education of the Spanish Government [CTQ2010-16133]
- Basque Government [GIC07/24-IT-220-07]
- University of the Basque Country [UFI 11/39]
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Operating and peak pressure drops have been studied in conical spouted beds equipped with draft tubes of different configuration using materials of different size. The draft tubes used are nonporous and open-sided ones. Based on an experimental design, the factors of greater influence on both pressure drops have been determined and general correlations valid for fine and coarse materials have been proposed for predicting the operating pressure drop and peak pressure drop with each type of draft tube. The results show that conical spouted beds equipped with draft tubes give way to lower operating and peak pressure drops than those without draft tube. A comparison of draft tube systems reveals that nonporous tubes give way to the lowest values of both pressure drops, but the solid circulation rates and the gas solid contact efficiency are poorer than those with open-sided draft tube systems.
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