Distributor device for a multiple-bed downflow reactor

摘要

The invention relates to a device and method for distributing a liquid and gas in a multiple-bed downflow reactor, such as a hydrocarbon processing reactor, like a hydrocracker. The device comprises respectively the method uses a distributor device comprising a substantially horizontal collecting tray provided with a central gas passage. Gas passing in downward direction through the central gas passage is forced into a swirling motion by a swirler. This swirling motion has a swirl direction around a vertical swirl axis so that the gas leaves the central gas passage as a swirl. At a location above the collecting tray, a quench fluid is ejected into gas in an ejection direction, which is, viewed in a horizontal plane, at least partly opposite to the swirl direction.

主权项

1. A process, comprising: providing distributor device for distributing liquid and gas in a multiple-bed downflow reactor; wherein the distributor device comprises:
a substantially horizontal collecting tray provided with: a central gas passage and liquid passages around the central gas passage; a swirler, which swirler: is located above the collecting tray around the central gas passage, and is provided with vanes defining a swirl direction and being arranged to impart a swirling motion to gas passing through the central gas passage so that the gas leaves the central gas passage as a swirl swirling in said swirl direction around a vertical swirl axis; one or more ejection nozzles located above the collecting tray and arranged for ejecting, in an ejecting direction, a quench fluid into the gas before said gas enters the swirler; wherein the ejection direction is represented in an orthogonal set of three ejection vectors comprised of a radial ejection vector extending perpendicular to the swirl axis, an axial ejection vector (A) extending parallel to the swirl axis and a tangential ejection vector extending tangentially with respect to the swirl axis;introducing the quench fluid through the one or more injection nozzle; and passing the gas through the swirler;
characterized, in that the ejection nozzle is directed such that the tangential ejection vector,T) of the ejection direction of the ejected quench fluid is directed opposite to the swirl direction.