Fluidization of catalyst in lateral sections of a system

A method for processing a selected feedstock using a catalyst, comprising:

• configuring a reactor to receive the catalyst and the selected feedstock, wherein a reaction between the selected feedstock and the catalyst generates a spent catalyst;
• configuring a catalyst recovery system to process the spent catalyst;
• connecting the reactor to the catalyst recovery system with a conduit, the conduit having a lateral section, wherein the spent catalyst flows through a flow space defined by an inner wall of the lateral section;
• and
• directing a jet of a fluidizing agent into the spent catalyst in the lateral section using a fluidizer positioned at the lateral section, the fluidizer including a distributor in fluid communication with at least one nozzle, wherein the at least one nozzle is completely inside the flow space and at least a portion of the distributor is inside the flow space, wherein the at least one nozzle is configured to form and direct a jet of a fluidizing agent into the spent catalyst in the lateral section.