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تحقیق و طراحی مهندسی شیمی
جزئیات رویداد
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  • experimental investigation of liquid holdup in structured packings

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 671
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    • شماره تماس دبیرخانه رویداد: -
     liquid holdup is an important hydrodynamic parameter for characterizing the gas/liquid flow pattern in packed beds. in this paper, a study of liquid holdup in 3 different structured packings: mellapak 2x from sulzer, koch-glitsch flexipac 2y hc, and montz-pak b1-250m is presented, using air/water, air/water/sugar solutions with liquid viscosity up to 12 cp and air/30 wt% mea in a 0.5 m id absorption column with a packing height of 5 m. as expected, at a given liquid load, the liquid holdup was close to constant as a function of gas flow, with an increase at high gas velocities. in general, the sulzer packing had a higher liquid holdup than observed in the two other packings. a possible explanation for this could be the lack of enhanced draining of liquid as seen with the modifications of the end-section of the koch-glitsch and montz packings. liquid holdup was found to increase with increasing liquid viscosity. the influence was higher at high liquid load than at low liquid load. our results indicate a higher dependency at high liquid load and a lower at low liquid load. there was a reasonable agreement between our results and the data found in the literature.

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