07311746 is referenced by 32 patents and cites 72 patents.

A highly efficient vapor/liquid separation apparatus for treating a flow of vapor/liquid mixtures of hydrocarbons and steam comprises a substantially cylindrical vertical drum having an upper cap section, a middle section comprising a circular wall, a lower cap section, a tangential inlet to introduce hydrocarbon/steam mixtures, an overhead vapor outlet, and a bottom outlet for liquid. The vessel also comprises an annular structure located in the middle section, comprising i) an annular ceiling section extending from the circular wall and ii) a concentric internal vertical side wall to which the ceiling section extends. The annular structure blocks upward passage of vapor/liquid mixtures along the circular wall beyond the ceiling section, and surrounds an open core having sufficient cross-sectional area to permit vapor velocity low enough to avoid significant entrainment of liquid.

Title
Vapor/liquid separation apparatus for use in cracking hydrocarbon feedstock containing resid
Application Number
10/851434
Publication Number
7311746 (B2)
Application Date
May 21, 2004
Publication Date
December 25, 2007
Inventor
James M Frye
Houston
TX, US
George Stephens
Humble
TX, US
Arthur R Di Nicolantonio
Seabrook
TX, US
Richard C Stell
Houston
TX, US
Assignee
ExxonMobil Chemical Patents
TX, US
IPC
B01D 45/12
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