Abstract:
One or more specific embodiments disclosed herein includes a method for separating hydrogen from an olefin hydrocarbon rich compressed effluent vapor stream, employing a integrated heat exchanger, multiple gas-liquid separators, external refrigeration systems, and a rectifier attached to a liquid product drum.
Abstract:
In a method for producing a gaseous mixture of CO and H2, a first gas comprising at least 50% CO is compressed in a first compressor to form a first compressed gas cooled to a first temperature and mixes with a second gas comprising at least 50% hydrogen in order to form the gaseous mixture, at least one of the first and second gases originating from a cryogenic distillation separation unit in which a feed gas containing H2 and CO cools in a first heat exchanger and is separated in at least one distillation column and at least one part of the second gas heats in the separation unit to a third temperature lower than the first temperature and is then sent to mix with the first gas.
Abstract:
A process and apparatus for separating a feed containing hydrogen, carbon monoxide, methane, and optionally nitrogen to form a product gas having a desired H2:CO molar ratio and optionally a hydrogen product gas and a carbon monoxide product gas. The feed is partially condensed to form a hydrogen-enriched vapor fraction and a carbon monoxide-enriched liquid fraction. The hydrogen-enriched vapor fraction and carbon monoxide-enriched liquid fraction are combined in a regulated manner to form an admixture, which is cryogenically separated to form the product mixture having the desired H2:CO molar ratio.
Abstract:
The present application relates to a production plant comprising—a synthesis gas generation step (1) arranged to receive a hydrocarbon or carboneous feedstock (2) and in a synthesis gas generation process provide a syngas, —a production step (4) arranged to receive the syngas and produce a product stream (5), —a reverse water gas shift step (4) arranged to receive a H2 rich gas stream (7) and a C02 feed (8) and in a RWGS step obtain a reverse shifted gas stream (9), and—means (10) for adding said reverse shifted gas stream (9) to the synthesis gas stream (3).
Abstract:
A method for treating a gas stream comprising hydrogen and propane, where a combination of membrane separation and elevated pressure distillation is used to separate the hydrogen gas from the propane gas.
Abstract:
A process and plant are proposed for separating a feed mixture predominantly or exclusively containing carbon monoxide and hydrogen, in which the feed mixture is subjected to a cryogenic separation process in which a carbon monoxide-rich liquid and at least one residual gas mixture which is depleted in carbon monoxide and enriched in hydrogen, in comparison with the feed mixture, are formed. It is intended that the at least one residual gas mixture is subjected to a membrane separation process in which at least one hydrogen-rich permeate and at least one carbon monoxide-rich retentate are formed, wherein the or at least one of the carbon monoxide-rich retentates is recirculated to the cryogenic separation process.
Abstract:
The invention relates to a gas depleted of carbon dioxide produced by distillation, which is separated such as to produce a gas depleted of hydrogen, the gas depleted of hydrogen being used as a regeneration gas of a system for purification by adsorption upstream from the distillation, the composition of the regeneration gas at the intake of the purification system not being in the range of flammability in air.
Abstract:
This method comprises the following steps: treating a feed stream (12) to obtain a treated gas stream (60); cooling the treated gas stream (60) in a heat exchanger (34) to form at least one column feed fraction; feeding each column feed fraction into a distillation column (50); heating at least one downstream flow (106) derived from the column head stream (104) in the heat exchanger (34). The treatment step comprises the forming of an intermediate stream (20) containing at least 20 mole % ethylene and at least 20 mole % carbon monoxide, the method comprising a step to remove the carbon monoxide contained in the intermediate stream (20).
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 to form a net gas phase stream and a liquid phase hydrocarbon stream. The net gas phase stream is compressed, partially condensed and cooled to form a partially condensed, compressed net gas phase stream. The partially condensed, compressed net gas phase stream is separated to form an intermediate gas phase stream. The intermediate gas phase stream is cooled to form a cooled intermediate gas phase stream. The liquid phase hydrocarbon stream is cooled to form a cooled liquid phase hydrocarbon stream. The cooled intermediate gas phase stream is contacted with the cooled liquid phase hydrocarbon stream to form an H2-rich stream and a cooled second intermediate liquid phase hydrocarbon stream that is enriched with C3/C4 hydrocarbons.
Abstract:
Gas treatment equipment includes a compressor which compresses process gas, a first process module which is disposed downstream of the compressor and which treats the process gas, an expander which is disposed downstream of the first process module and which expands the process gas to obtain power, a second process module which is disposed downstream of the expander and which treats the process gas, and a driver which drives the compressor. A first pressure indicator is disposed at an inlet of the compressor for the process gas and measures a pressure of the process gas, and a second pressure indicator is disposed at an outlet of the second process module for the process gas and measures a pressure of the process gas. A recirculation flow path is connected to both of the outlet of the second process module for the process gas and the inlet of the compressor.