Weeping from distillation/absorption trays

Fasesan, S. O.

doi:10.1021/i200031a030

Cited by 7 publications

(11 citation statements)

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“…Similar behaviors are also found in other experimental data . Figure a shows the good consistency of our experimental data with those in the literature despite the difference in the low hole velocity range.…”

Section: Resultssupporting

confidence: 91%

Experimental study and modeling of weeping rate in rectangular large‐scale valve trays

et al. 2019

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Weeping is an important hydraulic parameter that needs to be considered for valve trays and for calculations in the distillation field. Therefore, the accurate prediction of weep rate is crucial for the optimal design of valve trays. First, the effects of gas and liquid loads and weir height on weep rate, tray pressure drop, and actual bubbling area were studied in a 1.5 m × 0.61 m cold simulator. Second, the weep modes on the valve tray were analyzed in detail. A theoretical model was then derived to calculate weeping. The model showed a clear relationship between the weep rate and the fractional bubbling area. The experimental data showed that the weir height substantially affected the orifice coefficient of the liquid passing through the valve. Finally, the relation between weir height and orifice coefficient was obtained by fitting the experimental data. The agreements were good, and the maximum deviations were approximately 25%.

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Section: Resultssupporting

confidence: 91%

Experimental study and modeling of weeping rate in rectangular large‐scale valve trays

et al. 2019

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“…The data of the clear liquid height on the bottom test tray are lower than those collected from the top test tray. This is due to the difference in the quantity of liquid flow rate on both test trays, resulting from the present column configuration-the quantity of the liquid weeped from the top test tray (Fasesan, 1985) Figure 5. Hydrostatic liquid head vs. F, factor with liquid loading as parameter.…”

Section: Resultsmentioning

confidence: 98%

“…During the second part, the sieve trays were replaced with Koch type-T valve trays. The collection tray at stage 1 was a chimney tray which served as weepage collection tray (Fasesan, 1985). A 3.175-mm-diameter hole sieve tray was the collection tray on stage 5.…”

Section: Hydraulic Columnmentioning

confidence: 99%

Hydraulic characteristics of sieve and valve trays

Fasesan¹

1987

Ind. Eng. Chem. Res.

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The hydraulic characteristics of sieve and Koch type-T valve trays have been measured in a 0.63m-diameter absorption column, with air-water system. The parameters measured include dry-tray pressure drop, hydrostatic head of liquid measured at the tray center, and total pressure drop. The operating conditions and equipment employed are representative of those encountered in industrial practice. The measured data compared favorably with few reliable data existing in open literature.

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“…This approach in obtaining the critical weep point was also recommended by Fasesan [15] who studied weeping in a 6.35 mm perforation plate.…”

Section: Weeping In Plate Columnsmentioning

confidence: 99%