Flow device for an enclosure for processing, particularly hydrocarbons, and corresponding enclosure
A flow device intended for a two-phase flow processing enclosure of the natural counter-flow type, in which an ascending gaseous flow and a descending liquid flow circulate. The device is formed by an appreciably horizontal tray having openings for the passage of the ascending gaseous flow, and a channel for recovering the descending liquid flow, the channel discharging into a flow orifice. The flow device includes a single guide device extending beneath the tray and connected to the flow orifice in such a way that the liquid flows on its outer wall. Also, a processing enclosure, particularly for processing a hydrocarbonated or aqueous type liquid flow, containing the flow device.
1. A flow device for a two-phase flow processing enclosure of the natural counter-flow type, in which an ascending gaseous flow and a descending liquid flow circulate, comprising an appreciably horizontal tray having openings for the passage of the ascending gaseous flow, and a channel for recovering the descending liquid flow, the channel discharging into a flow orifice, and further comprising a single guide device extending beneath the tray and connected to the flow orifice in such a way that at least part of the liquid flows on its outer wall.
2. The flow device according to claim 1 , wherein the guide device comprises a chain.
3. The flow device according to claim 1 , wherein the guide device comprises a tube.
4. The flow device according to claim 1 , wherein the guide device comprises a spring with non-contiguous turns, or a tube surrounded by a spring with non-contiguous turns.
5. The flow device according to claim 3 or 4 , wherein the interior of the tube is equipped with a heating or cooling element.
6. The flow device according to claim 1 , wherein the guide device is surrounded by a tubular member.
7. The flow device according to claim 1 , wherein the guide device comprises a transverse cross section small enough compared to the cross section of the flow orifice, or of a tubular member that surrounds the guide device, to keep the liquid flowing along the device at a distance from the walls of the enclosure or the tubular member.
8. The flow device according to claim 7 , wherein the guide device comprises a transverse cross section of between ⅕th and about one half of the transverse cross section of the flow orifice or of the tubular member that surrounds it.
9. The flow device according to claim 1 , wherein the guide device is made of a material suitable for the characteristics of the liquid flow.
10. Two-phase flow processing enclosure of the natural counter-current type, comprising a flow device according to claim 1 .
11. The processing enclosure according to claim 10 , wherein the guide device extends appreciably parallel to the vertical axis of the enclosure.
12. The processing enclosure according to claim 10 or 11 , wherein the end of the guide device opposite to the flow orifice is attached to the enclosure.
13. The processing enclosure according to claim 10 , wherein it is intended for the processing of a hydrocarbonated or aqueous type liquid flow.
14. The processing enclosure according to claim 10 , wherein it relates to a crude oil atmospheric or vacuum distillation column, vacuum distillation column, visbreaker atmospheric or vacuum fractionation column.