Hydroprocessing system with improved cooling liquid atomization

A hydroprocessing system comprising:

• a processing vessel in the form of a fluid catalytic reactor having a hydrocarbon inlet coupled to a hydrocarbon supply for directing hydrocarbon into the processing vessel,
• said processing vessel having a process gas inlet coupled to a light process gas supply for directing light process gas into said processing vessel;
• said processing vessel having a vapor outlet for directing high temperature vapor from the processing vessel to a vapor discharge line for direction to an effluent cooler;
• a spraying system for directing atomized cooling water into the high temperature vapor directed through said vapor discharge line;
• said spraying system including a spray nozzle having an atomizing gas inlet coupled to a light gas supply and a water inlet coupled to a cooling water supply;
• said nozzle body having an internal protrusion extending downstream within an enlarged diameter expansion chamber of said nozzle body, said protrusion having a central gas passage communicating with said atomizing gas inlet and spray nozzle light gas supply;
• said protrusion having a plurality of circumferentially spaced cross gas passages communicating with said central gas passage for discharging a plurality of atomizing gas streams transversely outwardly into said expansion chamber;
• said nozzle body having a plurality of circumferentially spaced water passages each for directing a pressurized water flow stream transversely across a respective cross gas passage for direct interaction with the atomizing gas stream discharging from the cross gas passage for pre-atomizing the water and the direction of the pre-atomized water into and throughout the expansion chamber;
• said nozzle body expansion chamber having an end wall formed with an inwardly extending impingement post having a transverse impingement surface against which pre-atomized water impinges for further liquid particle breakdown;
• and
• said nozzle body end wall being formed with a plurality of circumferentially spaced discharge orifices disposed in surrounding relation to said impingement post for further atomizing the cooling water into micron sized atomized particles with an average diameter of less than 700 microns for discharge in a conical spray pattern into vapor communicated through said vapor discharge line for preliminary cooling of said vapor prior to said effluent cooler.

A hydroprocessing system comprising:

• a processing vessel in the form of a distillation column having a hydrocarbon inlet coupled to a hydrocarbon supply for directing hydrocarbon into the processing vessel,
• said processing vessel having a vapor outlet for directing high temperature vapor from the processing vessel to a vapor discharge line for direction to an effluent cooler;
• a spraying system for directing atomized cooling water into the high temperature vapor directed through said vapor discharge line;
• said spraying system including a spray nozzle having an atomizing gas inlet coupled to a light gas supply and a water inlet coupled to a cooling water supply;
• said nozzle body having an internal protrusion extending downstream within an enlarged diameter expansion chamber of said nozzle body, said protrusion having a central gas passage communicating with said atomizing gas inlet and spray nozzle light gas supply;
• said protrusion having a plurality of circumferentially spaced cross gas passages communicating with said central gas passage for discharging a plurality of atomizing gas streams transversely outwardly into said expansion chamber;
• said nozzle body having a plurality of circumferentially spaced water passages each for directing a pressurized water flow stream transversely across a respective cross gas passage for direct interaction with the atomizing gas stream discharging from the cross gas passage for pre-atomizing the water and the direction of the pre-atomized water into and throughout the expansion chamber;
• said nozzle body expansion chamber having an end wall formed with an inwardly extending impingement post having a transverse impingement surface against which pre-atomized water impinges for further liquid particle breakdown;
• said nozzle body end wall being formed with a plurality of circumferentially spaced discharge orifices disposed in surrounding relation to said impingement post for further atomizing the cooling water into micron sized atomized particles with an average diameter of less than 700 microns for discharge into vapor communicated through said vapor discharge line for preliminary cooling of the vapor prior to said effluent cooler.