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多相流动科学与技术
SJR: 0.124 SNIP: 0.222 CiteScore™: 0.26

ISSN 打印: 0276-1459
ISSN 在线: 1943-6181

多相流动科学与技术

DOI: 10.1615/MultScienTechn.2019029957
pages 199-214

GAS HOLDUP IN THE GAS-LIQUID-COAL SLURRY FLOW IN A FLOTATION COLUMN IN PRESENCE OF SURFACE ACTIVE AGENT

Musliyar Kurungattil Fahad
Department of Chemical Engineering, Indian Institute of Technology Guwahati-781039, India
Ritesh Prakash
Department of Chemical Engineering, Indian Institute of Technology Guwahati-781039, India
Subrata Kumar Majumder
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, PIN-781039, Assam, India
Pallab Ghosh
Department of Chemical Engineering, Indian Institute of Technology Guwahati-781039, India

ABSTRACT

The gas holdup is an important parameter in chemical and petroleum industries for coal gasification and catalytic synthesis of hydrocarbon. Experimental work was carried out to examine the effects of concentration of ionic (i.e., cationic and anionic) and non-ionic surface active agents on the gas holdup based on the particle size, slurry concentration, and superficial gas velocity. The change in the volume fraction of gas was analyzed by the drift-flux model. An empirical correlation was developed. This correlation is suitable for predicting the gas holdup ranging from 2 to 22% within a wide range of slurry concentration.

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