Patent ID: 6352639
Filing Date: 2002-03-05
Classification: B01J,B05B,C10G,F28C,F28F

Abstract:
A fluid cat cracking process which comprises the steps of:(a) injecting steam into a flowing, hot, liquid FCC feed oil under pressure, to form a two-phase fluid comprising said hot oil and steam; (b) passing an atomizing gas comprising steam and said hot, two-phase fluid formed in (a) through separate conduits in a heat exchanger, in which said flowing hot fluid heats said steam to a superheat temperature, by indirect heat exchange with said fluid; (c) injecting superheated steam formed in (b) into said hot fluid to increase the surface area of said liquid phase and form a steam-continuous two-phase fluid; (d) passing said steam-continuous fluid through an atomizer into a lower pressure atomizing zone to atomize said fluid and form a spray comprising droplets of said feed oil, and (e) passing said spray into a cat cracking reaction zone.