L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Frederick Lockwood

Christian Monereau

Arthur Darde

Alain Briglia

Jean-Pierre Tranier

Marc Wagner

Benoit Davidian

Paul Terrien

Richard Dubettier-Grenier

Mathieu Leclerc

Ludovic Granados

Xavier Traversac

Christophe Szamlewski

Cyril Defaye

Claire Bourhy-Weber

Marie Cognard

In a method for separating a mixture containing carbon dioxide, the mixture is cooled in a heat exchanger and partially condensed and a first liquid is separated from the mixture in a first system operating at low temperature comprising at least one first phase separator and a gas from the first system is treated in a membrane system to produce a permeate and a non-permeate, the gas from the first system being divided into two portions, a first portion being sent to the membrane system without being heated and a second portion being heated to at least an intermediate temperature of the heat exchanger and then sent to the membrane system without being cooled.

Apparatus and method for separating COat low temperature comprising a step of separation by permeation

In a method for compressing a gas that is to be separated in a low-temperature COseparation unit using at least one partial condensation step and/or at least one distillation step, the gas that is to be separated has a variable composition and/or variable flow rate, the gas that is to be separated is compressed in a compressor to produce a compressed gas and the inlet pressure of the gas that is to be separated, entering the compressor, is modified according to the COcontent and/or the flow rate of the gas that is to be separated so as to reduce the variations in volumetric flow rate of the gas that is to be separated entering the compressor.

Compression method and apparatus for an apparatus for capturing COby low-temperature separation

In a method for cooling a flow containing at least 35% carbon dioxide and at least 0.2 &#x3bc;g/Nmof mercury, the mercury being in liquid and/or gas form, the flow is cooled in a first brazed aluminum plate-fin heat exchanger from a first temperature to a second temperature higher than &#x2212;38.6&#xb0; C. to form a cold flow at the second temperature, and the flow cooled to the second temperature is cooled in a second heat exchanger, which is a tube and shell heat exchanger, to a third temperature lower than &#x2212;38.6&#xb0; C.

Method and apparatus for cooling a flow containing at least 35% carbon dioxide and mercury

According to certain embodiments of the invention, a gas containing at least 50% of carbon dioxide is cooled in a first exchanger so as to produce a cooled fluid, a liquid derived from the cooled fluid is sent to a distillation column to be separated therein, a head gas is withdrawn from the distillation column and reheated in the first exchanger, a vat liquid, which is richer in carbon dioxide than the gas containing at least 50% of carbon dioxide, is withdrawn and at least a portion thereof is heated in the first exchanger, at least a first portion of the vat liquid is vaporized in the first exchanger in order to produce a vaporized portion, the vaporized portion is sent back to the column and an NOx removal column is supplied with the liquefied cycle gas produced by vaporizing and reliquefying the vat liquid from the column.

Method and device for separating a mixture containing carbon dioxide by means of distillation

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Paris, France

Frederick Lockwood