Methods and apparatuses for reforming of hydrocarbons including recovery of products

摘要

Embodiments of apparatuses and methods for reforming of hydrocarbons including recovery of products are provided. In one example, a method comprises separating a reforming-zone effluent into a H2, C6− hydrocarbon-containing gas phase and a C5+ hydrocarbon-containing liquid phase. The H2, (C1-C11) hydrocarbon-containing gas phase is partially condensed and separated to form a H2, C6− hydrocarbon-containing net gas stream and a C3+ hydrocarbon-containing liquid stream. The C5+ hydrocarbon-containing liquid phase, the C3+ hydrocarbon-containing liquid stream, and at least a portion of the H2, C6− hydrocarbon-containing net gas stream are introduced to a re-contacting recovery zone for forming a H2-rich stream, a C3/C4 hydrocarbon-rich LPG stream, and a C5+ hydrocarbon-rich reformate stream.

主权项

1. An apparatus for reforming of hydrocarbons including recovery of products, the apparatus comprising:
a hot separator configured to receive and separate a reforming-zone effluent that comprises H2, C4− hydrocarbons, and C5+ hydrocarbons including aromatics to form a H2, (C1-C11) hydrocarbon-containing gas phase and a C5+ hydrocarbon-containing liquid phase; a product condenser configured to receive and partially condense the H2, (C1-C11) hydrocarbon-containing gas phase to form a partially condensed H2, (C1-C11) hydrocarbon-containing stream; a product separator configured to receive and separate the partially condensed H2, (C1-C11) hydrocarbon-containing stream to form a H2, C6− hydrocarbon-containing net gas stream and a C3+ hydrocarbon-containing liquid stream; and a re-contacting recovery zone in fluid communication with the hot separator and the product separator to receive the C5+ hydrocarbon-containing liquid phase, the C3+ hydrocarbon-containing liquid stream, and at least a portion of the H2, C6− hydrocarbon-containing net gas stream and configured to further separate H2, C3/C4 hydrocarbons, and/or C5+ hydrocarbons for forming a H2-rich stream, a C3/C4 hydrocarbon-rich LPG stream, and a C5+ hydrocarbon-rich reformate stream, wherein the re-contacting recovery zone comprises: a plurality of re-contact drums in fluid communication with each other for separating liquid and/or gas phase fractions of the C5+ hydrocarbon-containing liquid phase, the C3+ hydrocarbon-containing liquid stream, and the at least the portion of the H2, C6− hydrocarbon-containing net gas stream to further separate H2, C3/C4 hydrocarbons, and/or C5+ hydrocarbons, the plurality of re-contact drums including an initial stage re-contact drum, an intermediate stage re-contact drum that is downstream from the initial stage re-contact drum, and an end stage re-contact drum that is downstream from the intermediate stage re-contact drum.