Process and apparatus for cracking hydrocarbon feedstock...

Details Process and apparatus for cracking hydrocarbon feedstock... Process and apparatus for cracking hydrocarbon feedstock...

2007-05-22

2007-05-22

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By alkyl transfer, e.g., disproportionation, etc.

C585S652000

Reexamination Certificate

active

10851486

ABSTRACT:
A process for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a liquid phase which collect as bottoms and removing the liquid phase, separating and cracking the vapor phase, and cooling the product effluent, wherein the bottoms are maintained under conditions to effect at least partial visbreaking. The visbroken bottoms may be steam stripped to recover the visbroken molecules while avoiding entrainment of the bottoms liquid. An apparatus for carrying out the process is also provided.

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