Patent ID: 9024098
Filing Date: 2015-05-05
Classification: C10G

Abstract:
1. A process for increasing the yields of aromatics from a hydrocarbon feedstream, comprising: passing the hydrocarbon feedstream and a recycle gas to a first reactor to dehydrogenate naphthenic compounds and to generate a first effluent stream having a reduced naphthenic content and is operated at a temperature between 440° C. and 560° C.; passing the first effluent stream to a separator to create a light hydrocarbon stream, comprising C7 and lighter hydrocarbons, and a heavy hydrocarbon stream, comprising C8 and heavier hydrocarbons; passing the heavy hydrocarbon stream to a first reforming reactor system operated at a first set of reforming conditions, wherein the first set of reforming conditions include a temperature between 540° C. and 580° C. and a pressure of less than 580 kPa, to generate a first reforming reactor system effluent stream having increased aromatic compounds; passing the first reforming reactor system effluent stream and the light hydrocarbon stream to a second reforming reactor system to generate a second reforming reactor system effluent stream comprising aromatics; and passing the second reforming reactor system effluent stream to a reformate splitter to generate an aromatics overhead stream comprising C7 and lighter aromatics and hydrocarbons, and a bottoms stream comprising C8 and heavier aromatics and hydrocarbons; wherein the first reforming reactor system is operated at a higher pressure than the second reforming reactor system.