Determination of the minimum gas load on the forward-flow valve-sieve tray
UDC: 66.045.13
DOI: -
Authors:
SVIRIDOV D.V.
1,
LARKIN A.V.2,
FEDOROVA E.B.1
1 National University of Oil and Gas "Gubkin University", Moscow, Russia
2 Ryazan Oil Refining Company, Ryazan, Russia
Keywords: oil and gas processing equipment, chemical industry equipment, contact device, mass transfer, forward-flow valve-sieve tray, forward-flow valve tray, weeping, minimum gas flow rate
Annotation:
This invention is related to the mass transfer contact equipment used in the rectification and absorption columns. The tray contains valves, which have three openings with deflectors under them. When the valve is in the top position the deflectors is vertically situated. It allows turning maximum quantity of gas through openings, thus increasing the tray’s efficiency. The authors of the article present the results of analyzing liquid weeping on the forward-flow valve-sieve and forward-flow valve trays. A model for calculating the minimum permissible value of the gas velocity factor in the working section of forward-flow valve-sieve trays has been proposed. The equation for calculating the minimum permissible value of the gas velocity factor is obtained for a straight-through valve-sieve tray. A comparison of the liquid dip on a forward-through valve-sieve and valve trays is made. It is shown that the straight-through valve-sieve tray has minimum permissible values of the gas velocity factor that are significantly smaller (by 1,5…2 times) than the forward-through valve tray.
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