The Veba Combi-Cracker (VCC™) technology is a slurry phase hydrocracking/hydrogenation process for converting petroleum residues at very high conversion rates and liquid yields into high quality distillates or synthetic crude oil in Refining, Upstream field upgrading and Coal-to-liquids (CTL) markets. KBR's VCC is the only technology that has been demonstrated to operate on a wide variety of feed stocks ranging from refining residue to coal and a mixture of oil and coal. VCC technology has been demonstrated to achieve 95% or higher conversion on a wide range of feed stocks. VCC adopts a simple flow sheet architecture with traditional refinery grade equipment. There are no reactor internals and the kinetics and hydrodynamics are sustained by unique design techniques to maintain the high conversion.