L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Xavier Traversac

Arthur Darde

Alain Briglia

Jean-Pierre Tranier

Philippe Court

Ludovic Granados

Frederick Lockwood

Alain Guillard

Benoit Davidian

Herve Le Bihan

Paul Terrien

Richard Dubettier-Grenier

Mathieu Leclerc

Olivier De Cayeux

Bertrand Demolliens

Christophe Szamlewski

Solène Valentin

Christophe Szamleski

Marie Cognard

Hervé Le Bihan

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fluid, a liquid derived from the cooled fluid is sent to a distillation column to be separated therein, a head gas is withdrawn from the distillation column and reheated in the first exchanger, a vat liquid, which is richer in carbon dioxide than the gas containing at least 50% of carbon dioxide, is withdrawn and at least a portion thereof is heated in the first exchanger, at least a first portion of the vat liquid is vaporized in the first exchanger in order to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

The invention relates to a method for liquefying a feed gas or cooling a feed gas at supercritical pressure, in which the feed gas mixed with a cycle gas is condensed or cooled in order to form a supercritical gas or liquid at the first pressure, the liquid at the first pressure is cooled in a first heat exchanger (E), the cooled liquid is removed from the first exchanger and expanded up to a second pressure that is lower than the first pressure in order to form an expanded flow, at least one portion of the expanded flow is cooled in a second heat exchanger, the expanded flow is removed from the second heat exchanger (E), said flow is split into at least two portions, including a first portion and a second portion, the first portion of the expanded flow constituting the liquefied product, the second portion and preferably a third portion being vaporized in the second heat exchanger and the thus-formed at least one cycle gas is then mixed with the feed gas and compressed in a compressor, before or after being mixed with the feed gas.

Method and apparatus for liquefying a gas or cooling a feed gas at supercritical pressure

In a method for purifying a flow rich in carbon dioxide and containing at least one impurity lighter than carbon dioxide, the flow is cooled in a heat exchanger () and partially condensed, the partially condensed flow is sent to a first phase separator () operating under a first pressure, a gas from the first phase separator is compressed and sent to a second phase separator () operating under a second pressure higher than the first pressure, a first liquid () is sent from the first phase separator to a housing () operating under a pressure lower than the first pressure, and a second liquid () is sent to the housing.

Method and appliance for purifying a flow rich in carbon dioxide

The present invention relates to a process and apparatus for producing a fluid enriched in carbon dioxide starting from a waste gas from a ferrous metallurgy unit.

Method and device for producing a fluid enriched with carbon dioxide from a waste gas of a ferrous-metallurgy unit

The present invention relates to a method for producing hydrogen, with reduced carbon dioxide emissions, from a hydrocarbon mixture. In said method, the hydrocarbon mixture is reformed so as to produce a synthetic gas that is cooled, then treated in a shift reactor so as to be enriched with H2 and CO2. Optionally dried, said mixture is treated in a PSA hydrogen purification unit in order to produce hydrogen. The residue is treated by means of partial condensation with a view to capturing CO4 before said residue is sent as fuel to reforming.

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Paris, France

Xavier Traversac