L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Philippe Andreani

Christian Monereau

Pierre Petit

Jean-Marc Belot

Michel Poteau

Thomas Wellnitz

Jean-Baptiste Dellon

Christian Berta

An air treatment plant includes a waste gas vent connected to structure ( ) for attenuating the noise conducted by this waste gas. The noise attenuation structure ( ) is a substantially closed and at least partially buried enclosure ( ). The invention applies especially to plants for separating air by pressure swing adsorption.

Air treatment plant provided with noise attenuation means

The device comprises an adsorber (1) and three outlet capacities (2-4), first (8, 9) and second (10, 11) structure to establish bidirectional communication between the adsorber and the elution capacity (2) and the repressurization capacity (3), respectively, and third structure (14A, 15; 16) to establish unidirectional communication from the adsorber to the production capacity (4).

Apparatus for the separation of a gaseous mixture

PSA process and apparatus for the separation of a gaseous mixture

A plant for the separation of gases by adsorption, which is of the PSA type, includes, in a container (1) of vertical axis, at least one annular bed of particulate material (5, 6) supported on a lower wall (9) which is itself supported by a perforated prismatic wall (11) bearing on a domed end (2) of the container. A lower wall (9), advantageously in the form of a very wide inverted V (9A, 9B), has no part forming an angle (.alpha., .beta.) in excess of 15.degree. with the horizontal. The plant is useful in the separation of gases from air.

Plant for the separation of gases by adsorption, and use for the

A separation process, involving an adsorber containing at least one adsorbent with an inlet and outflow, involves the following stages of the cycle:--stage I, repressurization from the low pressure of the cycle;--stages II and III during one of which the high pressure of the cycle is reached; and stage IV, depressurization/purging, during which the low pressure of the cycle is reached. Each stage (I to IV) involves a fixed gas flow (F) at one end of the adsorber and a free gas flow (.lambda.) at the other end of the adsorber, the fixed flows (F) addressing the inlet (E) and outlet (F) ends of the adsorber from one stage (I to IV) to the next. The process is particularly applicable to the production of oxygen from air.

Process for the separation of gaseous mixtures by adsorption with

This process carries out a cycle on a monoadsorber (1) connected, on the one hand, to at least one container (2, 3) via a line (8, 10) fitted with a variable-opening valve (9, 11) and, on the other hand, to a reversible compression/pumping machine coupled to a speed variator (5). Application in particular to the production of oxygen at a variable flow rate from atmospheric air.

Process and apparatus for the treatment of a gas by adsorption with a

A gas treatment bottle comprises at least one gas dispenser (24;50) and has a distributor (25;51) intended to be fixed in a gas treatment bottle (10) in front of an inlet or outlet orifice (18;56). The distributor (25;51) has a head (26) which covers the orifice and has an openworked end wall (28) and an openworked side wall (30), typically inclined in the direction of the end wall (28) and surrounding it. The degree of openworking in the side wall (30) is greater than the degree of openworking in the end wall (28).

Gas treatment bottle

Process for treating a gas mixture by pressure swing adsorption wherein for each adsorber (1), the duration (T.sub.R) of the countercurrent recompression step is much less than that (T.sub.D) of the cocurrent decompression step. The process is particularly useful in the production of oxygen from atmospheric air.

Process for treating a gas mixture by pressure swing adsorption

The equipment, for example of the PSA type, comprises gas circulation elements for passing the gas horizontally through an adsorbent (3), which comprise, on at least one vertical side of the adsorbent, a gas distribution volume comprising a first subvolume (5; 9) adjacent to the adsorbent, and a second subvolume (6; 10) separated from the first subvolume by a wall provided with passages (40) having cross-sections and/or a distribution which are selected so as to reduce the variations in local flow rate along the adsorbent. The equipment is particularly useful in separating gases from air.

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Le Kremlin Bicetre, France

Philippe Andreani