Patent ID: 7638102

Claim:
Feed sprayer for FCC unit riser comprising: a spray nozzle having a peripheral flange and a contact area for connections defined below the flange; an external housing having an axial end opening at an upper end portion thereof with an L-shaped peripheral edge adapted to receive said spray nozzle with the L-shaped peripheral edge in opposed facing relation to the peripheral flange of the spray nozzle; a seal defined at the interface between said peripheral flange of the spray nozzle and said L-shaped peripheral edge of the external housing to provide a seal therebetween; an internal housing to invert a first media flow from an internal coaxial flow position to an external coaxial flow position, the internal housing including a tube with a cup-shaped end connected to the contact area of the spray nozzle; a seal defined at the connection between the internal housing and the contact area of the spray nozzle to prevent passage of flowing media through said connection; and an inverted Y-shaped pipe disposed in the internal housing to invert a second media flow from an external coaxial position to an internal coaxial position, said Y-shaped pipe having an exit flow end being connected to the spray nozzle and having diverging in-flow ends communicating through the walls of the internal housing with an annular space formed between the internal and external housings.