Study of Gas Holdup in an Air/Water/Fiber System, 1997 Recycling Symposium Proceedings

Flotation deinking is a process comprised of air, water, wood fiber, and contaminants. Understanding gas holdup (gas percent by volume) is critical for effective.contaminant removal by flotation. To this end, the effect of ONP consistency on gas holdup in a three phase system composed of air, water, and ONP fiber was studied in a cocurrent bubble column. Gas holdup was measured in a laboratory flowloop at various column heights and chord locations by means of gamma densitometry. Three consistencies were investigated (0%, 0.8%, and 1.2%) and cover the range typical in ONP deinking. Air and liquid flow rates were also varied to determine their effect on gas holdup. General trends will be presented from variations in ONP consistency, air flow rate, liquid flow rate, and column location.

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Author: Schulz, T. H., Heindel, T. J.
Study of Gas Holdup in an Air/Water/Fiber System, 1997 Recyc
Study of Gas Holdup in an Air/Water/Fiber System, 1997 Recycling Symposium Proceedings
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