Process for mixing a fluid meltflow stream and recycle

A process comprising:

• providing an apparatus comprising
• (A) a passageway having a sidewall with an interior for receiving a first flow stream (FFS1), the passageway having an inflow end and an opposing outflow end;
• (B) a gear pump assembly comprising
• (i) a housing,
• (ii) a gear chamber in the housing,
• (iii) an inlet placing the passageway outflow end in fluid communication with the gear chamber,
• (iv) a plurality of intermeshing gears mounted for rotation in the gear chamber, the gears having teeth which engage with each other in the chamber, and
• (v) an outlet in fluid communication with the gear chamber,
• (C) one or more conduits, the conduits extending along opposing sides of the gear pump assembly, each conduit in fluid communication with the outlet and the passageway, each conduit having an outlet duct in fluid communication with the passageway, and
• (D) an injector in each conduit for adding a second fluid (F2) into each conduit, the process comprising
• introducing the second fluid from each respective outlet duct into the FFS1 at a location upstream of the inlet;
• feeding the FFS1 and the second fluid into the inlet;
• mixing, in the gear chamber, the second fluid with FFS1 to form a mixed fluid flowstream (mFFS);
• and
• discharging the mFFS from the outlet.