Apparatuses and methods for reforming of hydrocarbons

摘要

Apparatuses and methods for reforming of hydrocarbons are presented. In one example, a method comprises burning fuel gas to form a hot flue gas and heat a reforming-zone feedstock that contains (C5-C11) hydrocarbons to form a heated reforming-zone feed stream. The heated reforming-zone feed stream is partially reformed to form a partially reformed effluent. The partially reformed effluent is advanced through a process heat recovery coil arrangement that is recovering heat from the hot flue gas to form a heated partially reformed effluent. The heated partially reformed effluent is contacted with reforming catalyst at reforming conditions effective to form a reforming reaction-zone effluent. The reforming reaction-zone effluent comprises H2, C5+ hydrocarbons including aromatics, and C4− hydrocarbons.

主权项

1. An apparatus for reforming of hydrocarbons, the apparatus comprising:
a reforming heating-zone configured to heat a reforming-zone feedstock that contains (C5-C11) hydrocarbons to form a heated reforming-zone feed stream, wherein the reforming heating-zone has a radiant furnace section that is configured to burn fuel gas to form hot flue gas and a common convection section that is in fluid communication with the radiant furnace section to receive the hot flue gas, and wherein the reforming heating-zone comprises a process heat recovery coil arrangement disposed in the common convection section for recovering heat from the hot flue gas; and a reforming reaction-zone that receives the heated reforming-zone feed stream and that comprises:
a plurality of staged reactor catalyst beds that is in fluid communication with the radiant furnace section; andan additional reactor catalyst bed that is in fluid communication with the process heat recovery coil arrangement disposed within the common convection section, wherein the reforming heating-zone, the plurality of staged reactor catalyst beds, and the additional reactor catalyst bed are cooperatively configured for interstage heating and reforming of the heated reforming-zone feed stream to form a reforming reaction-zone effluent that comprises H2, C5+ hydrocarbons including aromatics, and C4− hydrocarbons.