INTEGRATED SOLVENT-DEASPHALTING AND FLUID CATALYTIC CRACKING PROCESS FOR LIGHT OLEFIN PRODUCTION

摘要

The process described herein broadly comprehends an integrated process that permits the use of straight run residual fractions as a feedstock to produce lighter olefins including propylene. A blend of natural gas condensate and/or naphtha, and heavy oil residue(s), is catalytically cracked to produce a light olefin-rich product stream. In particular, the light natural gas condensate and/or naphtha stream is used as both solvent in a solvent-deasphalting unit and a portion for the feedstock to a fluidized catalytic cracking process. In addition, blending a heavy boiling hydrocarbon stream with a light natural gas condensate or naphtha stream enables efficient cracking in fluidized catalytic cracking process processes while sustaining the heat balance within the cracking unit.

主权项

1. An integrated process for production of propylene comprising:
mixing a residual oil feedstream with a solvent in quantities and under conditions sufficient to precipitate at least a fraction of the asphaltenes, thereby producing a mixture of solvent and deasphalted residual oil, and precipitated asphaltenes, and; subjecting the mixture of solvent and deasphalted residual oil to fluidized catalytic cracking reactions, wherein both the solvent and the deasphalted residual oil from the mixture of solvent and deasphalted residual oil serve as reactants in the fluidized catalytic cracking reaction.