Patent ID: 8273936
Filing Date: 2012-09-25
Classification: C10G

Abstract:
1. A process for cracking a heavy hydrocarbon feed in a steam cracker having a convection section and a radiant section, the process comprising: (a) passing the heavy hydrocarbon feed to a first zone of a vaporization unit and separating the feed into a first vapor stream and a first liquid stream in the first zone; (b) passing the first liquid stream to a second zone of the vaporization unit and contacting the first liquid stream with countercurrent steam in the second zone of the vaporization unit to mix the first liquid stream with the steam to produce a second vapor stream and a second liquid stream; (c) contacting the second vapor stream with a wash liquid in a rectification section to produce a rectified vapor stream; and (d) steam-cracking the first vapor stream and the rectified vapor stream in the radiant section of the steam cracker to produce a cracked effluent.