Method for atomizing feedstock in a fluid catalytic cracking process

摘要

A liquid hydrocarbon feedstock is formed into a first annular flow and a nozzle pressure applied of 2.1 x 10<4> Pa to 2.1 x 10<5> Pa (3 to 30 psi) above the pressure in a catalytic riser conversion zone. The liquid feedstock annular flow is impacted by both a first axial flow of atomizing gas at an impact angle of 5 DEG to 45 DEG and a second annular flow of atomizing gas at an impact angle of 15 DEG to 90 DEG . As a result the liquid hydrocarbon feedstock flow is reduced to 300 to 400 micrometre droplets.