Patent ID: 7301063
Filing Date: 2007-11-27
Classification: B01J,C10G,Y02P

Abstract:
1. A process for increasing production of a light olefin hydrocarbon compound from a hydrocarbon feedstock, comprising the following steps of: feeding a hydrocarbon feedstock into a pyrolysis furnace to conduct a pyrolysis reaction; separating reaction products, which are generated from the pyrolysis reaction, into a stream containing hydrogen and C recovering hydrogen, and C separating pyrolysis gasolines and a C feeding a mixture of the separated pyrolysis gasolines, a hydrocarbon feedstock, and hydrogen into at least one reaction area; converting the mixture in the presence of a catalyst in the reaction area into an aromatic hydrocarbon compound which is rich in benzene, toluene, and xylene through dealkylation/transalkylation reactions, and into a non-aromatic hydrocarbon compound which is rich in liquefied petroleum gas through a hydrocracking reaction; separating reaction products of the mixture converting step into an overhead stream, which contains hydrogen, methane, ethane, and liquefied petroleum gas, and a bottom stream, which contains aromatic hydrocarbon compounds, and a small amount of hydrogen and non-aromatic hydrocarbon compounds, using a gas-liquid separation process; circulating the overhead stream into the compression and fractionation process; and recovering the aromatic hydrocarbon compounds from the bottom stream.