Initial hydrotreating of naphthenes with subsequent high temperature reforming
AssigneeUop LLC
InventorsMark D. Moser, Kurt M. Vanden Bussche, David A. Wegerer, Manuela Serban
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Abstract
A process for the production of aromatics through the reforming of a hydrocarbon stream is presented. The process utilizes the differences in properties of components within the hydrocarbon stream to increase the energy efficiency. The differences in the reactions of different hydrocarbon components in the conversion to aromatics allows for different treatments of the different components to reduce the energy used in reforming process.
Claims20
A process for increasing the yields of aromatics from a hydrocarbon feedstream, comprising:
- passing the hydrocarbon feedstream to a first reactor system operated at a first set of reaction conditions, including a first reaction temperature, to generate a hydrocarbon stream with a reduced naphthenic content;
- passing the reduced naphthene hydrocarbon stream to a second reactor system operated at a second set of reaction conditions, including an elevated temperature, to cyclize and aromatize the paraffinic compounds to generate an aromatic process stream;
- and
- passing the aromatic process stream to a reformate splitter to generate a reformate overhead comprising C6 and C7 aromatics, and a reformate bottoms stream comprising heavier hydrocarbons.
A process for increasing the yields of aromatics from a hydrocarbon feedstream, comprising:
- passing the hydrocarbon feedstream to a first reforming reactor system operated at reforming reaction conditions, and at a temperature in the range of 440° C. to 560° C., to generate a hydrocarbon stream with a reduced naphthenic content;
- and
- passing the reduced naphthene hydrocarbon stream to a second reforming reactor system, operated at reforming conditions, including an elevated temperature in the range of 540° C. to 580° C., to cyclize and aromatize the paraffinic compounds to generate an aromatic process stream.
Dependencies are inferred from the claim text.