A reactor system, comprising: (a) a reactor shell having a reactor shell wall; (b) a primary feed distribution unit disposed within the reactor shell; and (c) at least one secondary feed distribution unit disposed beneath the primary feed distribution unit within the reactor shell, wherein: (d) the primary feed distribution unit comprises a primary deflector plate and a first nozzle tray disposed beneath the deflector plate; and (e) the at least one secondary feed distribution unit comprises a collection tray and a second nozzle tray disposed beneath the collection tray, wherein each of the first nozzle tray and the second nozzle tray comprises a plurality of nozzles, the nozzles each comprising a nozzle body including a distal body portion having at least one liquid inlet configured for the passage of liquid therethrough, the distal body portion defining a substantially cylindrical distal void, wherein each liquid inlet is disposed tangentially to an inner surface of the distal body portion; characterized in that (f) the primary deflector plate is disposed at least substantially orthogonal to the reactor shell wall and wherein the primary deflector plate comprises a plurality of perforations therein configured to allow the passage of fluid through the primary deflector plate to the first nozzle tray, and (g) the reactor system further comprising a catalyst bed disposed beneath each of the primary feed distribution unit and the at least one secondary feed distribution unit, each catalyst bed disposed on a catalyst support unit, wherein each of the primary feed distribution unit, the at least one secondary feed distribution unit, and the catalyst support units are disposed at least substantially orthogonal to the shell wall. (a) a reactor shell having a reactor shell wall; (b) a primary feed distribution unit disposed within the reactor shell; and (c) at least one secondary feed distribution unit disposed beneath the primary feed distribution unit within the reactor shell, wherein: (d) the primary feed distribution unit comprises a primary deflector plate and a first nozzle tray disposed beneath the deflector plate; and (e) the at least one secondary feed distribution unit comprises a collection tray and a second nozzle tray disposed beneath the collection tray, wherein each of the first nozzle tray and the second nozzle tray comprises a plurality of nozzles, the nozzles each comprising a nozzle body including a distal body portion having at least one liquid inlet configured for the passage of liquid therethrough, the distal body portion defining a substantially cylindrical distal void, wherein each liquid inlet is disposed tangentially to an inner surface of the distal body portion; (f) the primary deflector plate is disposed at least substantially orthogonal to the reactor shell wall and wherein the primary deflector plate comprises a plurality of perforations therein configured to allow the passage of fluid through the primary deflector plate to the first nozzle tray, and (g) the reactor system further comprising a catalyst bed disposed beneath each of the primary feed distribution unit and the at least one secondary feed distribution unit, each catalyst bed disposed on a catalyst support unit, wherein each of the primary feed distribution unit, the at least one secondary feed distribution unit, and the catalyst support units are disposed at least substantially orthogonal to the shell wall.