Abstract: A fluid distribution tray that is capable of providing for the distribution of a fluid across a surface area of a bed of contact material contained within a vessel, wherein the fluid distribution tray includes lost area due to a support element upon which the fluid distribution tray is supported within the vessel, wherein the fluid distribution tray includes a plurality of fluid flow means distributed across the fluid distribution tray in a distribution pattern providing for a high density distribution of fluid flow means within a compensation area that is adjacent and near to the lost area and a low density distribution of fluid flow means within the remaining useable area of the fluid distribution tray. Also included is a method providing for a uniform fluid distribution within a vessel.

Abstract: The invention relates to a distribution device (1) for distributing liquid over an underlying catalyst bed comprising a horizontal collection tray (2) provided with at least one gas chimney (3) for upward or downward passage of gas and with liquid dosing nozzles (4) for downward passage of liquid, wherein the gas chimney(s) (3) and liquid doing nozzles (4) are separate from each other and do not have the same longitudinal axis, and wherein each liquid dosing nozzle (4) comprises a concentrically arranged liquid passing hole (5) and splash plate (6), wherein the splash plate (6) is located below the liquid passing hole (5) and below the collection tray (2) such that there is a free fall distance for liquid of at least 100 mm between the hole (5) and the splash plate (6). The invention further relates to a reactor for hydroprocessing comprising such distribution device (1), the use of such reactor for hydroprocessing and a process for hydrocracking or hydrotreating in such reactor.

Abstract: The invention relates to a multiple bed downflow reactor comprising vertically spaced apart reaction beds, preferably beds of catalyst particles, and, between adjacent beds, a mixing device for mixing fluids, the mixing device comprising: (i) a substantially horizontal collection tray, (ii) a swirl chamber for mixing liquid arranged below the collection tray, having an upper end part that is in direct fluid communication with the upper surface of the collection tray and an outlet opening at its lower end, and (iii) a substantially horizontal distribution tray located below the swirl chamber, which distribution tray is provided with a plurality of openings or downcomers for downward flow of liquid and gas, in which reactor each reaction bed rests upon a support tray provided with a central opening and which reactor further comprises open-ended pipes extending through each central opening such that a vertical chute is formed from the reaction bed above the mixing device to the reaction bed below the mixing d

Abstract: The invention relates to a multiple bed downflow reactor comprising vertically spaced apart reaction beds (2a, 2b), preferably beds of catalyst particles, and, between adjacent beds, a mixing device (5) for mixing fluids, the mixing device (5) comprising:(i) a substantially horizontal collection tray (6),(ii) a swirl chamber (7) for mixing liquid arranged below the collection tray (6), having an upper end part that is in direct fluid communication with the upper surface (9) of the collection tray (6) and an outlet opening (10) at its lower end, and(iii) a substantially horizontal distribution tray (13) located below the swirl chamber (7), which distribution tray (13) is provided with a plurality of openings or downcomers (14) for downward flow of liquid and gas,in which reactor each reaction bed rests upon a support tray (6) provided with a central opening (25) and which reactor further comprises open-ended pipes (23) extending through each central opening (25) such that a vertical chute (24) is formed from t