Mr. Dennis O’Brien is a Group Manager at Jacobs Consultancy. Prior to joining Jacobs, he spent 34 years at UOP in Engineering (Technical Specialist), computer department and marketing services. He has over 35 years of experience (one year in pilot plants) in petroleum and petrochemical fractionation working in the design, revamp and troubleshooting areas. Dennis has six patents in the distillation area and five papers on distillation in detergent and aromatics plants. He is an AIChE Fellow and Professional Engineer, has served as the SIOC Chair of AIChE in 2012, and as the Chicago Professional Chapter of Engineers without Borders Treasurer from 2011-2013. Dennis O’Brien obtained a BSChE ’71 from Tulsa University and a MBA ’78 from Roosevelt University.