Abstract:
A process for separating an olefin stream from a methane stream is disclosed. The process comprises providing an olefin stream comprising C2 and/or C3 olefins. The olefin stream is cooled in a heat exchanger with a mixed refrigerant stream to provide a cooled olefin stream. The cooled olefin stream is passed to a demethanizer column operating at an overhead pressure of about 344 kPa gauge (50 psig) to about 2069 kPa gauge (300 psig). The cooled olefin stream is fractionated in the demethanizer column to provide a demethanizer column overhead vapor stream and a demethanizer column bottoms liquid stream. The process provides an improved recovery/yield of olefins and also optimizes the cooling and/or heating of other process streams.
Abstract:
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.
Abstract:
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.
Abstract:
An apparatus for separating a feed stream into product streams. The apparatus includes an upper section, a middle section, and a lower section. The middle section has a dividing wall separating it into two portions. A liquid barrier blocks the flow of liquid from the upper section into the middle section and allows vapor to flow from the middle section to the upper section. A vapor and liquid barrier blocks both the flow of both vapor from the lower section to the middle section and the flow of liquid from the middle section to the lower section. Vapor conduits allow vapor to flow from the lower section to each of the middle portions in varying amounts. Also processes for separating a feed stream.
Abstract:
An apparatus for separating a feed stream into product streams. The apparatus includes an upper section, a middle section, and a lower section. The middle section has a dividing wall separating it into two portions. A liquid barrier blocks the flow of liquid from the upper section into the middle section and allows vapor to flow from the middle section to the upper section. A vapor and liquid barrier blocks both the flow of both vapor from the lower section to the middle section and the flow of liquid from the middle section to the lower section. Vapor conduits allow vapor to flow from the lower section to each of the middle portions in varying amounts. Also processes for separating a feed stream.
Abstract:
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.
Abstract:
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.