Patent ID: 8147676
Filing Date: 2012-04-03
Classification: C10B,C10G

Abstract:
1. An improved delayed coking process comprising: a) adding an oxidizing agent to a heavy oil residual feed stream and maintaining the feed at an oxidizing temperature for an oxidizing time sufficient to significantly increase the amount of asphattenes and organically-bound oxygen in the feed in order to make an oxidized feed; b) pre-heating the oxidized feed to a pre-heat temperature; c) conducting the pre-heated oxidized feed to a coking vessel and coking the pre-heated oxidized feed in the vessel at a coking pressure and a coking temperature for a coking time to form a substantially free-flowing anisotropic coke product; d) conducting volatiles away from the process; and e) after the coking time, removing the free-flowing coke product from the vessel; wherein a metal-containing agent is added to the feed prior to step (e).