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 . <EOS>