Abstract: A radial adsorber comprising: an adsorbent mass containing particles, a cylindrical shell ring extending along a longitudinal axis that is vertical when the adsorber is in operation, an external grid and an internal grid arranged in such a way as to be permeable to the gas and impermeable to the particles, the internal grid and external grid between them forming an annular volume housing the adsorbent mass, an internal chamber located between the vertical longitudinal axis and the internal grid, an external chamber located between the external grid and the shell ring, the internal chamber and external chamber being intended for the circulation of the gas, the external grid being formed by a plurality of wires and a plurality of supports, the supports being mounted transversely to the wires, the supports and the wires being mounted secured to one another.

Abstract: A unit for purifying a gas mixture by adsorption, including at least one adsorber having at least one cluster of N identical adsorbent modules operating in parallel, where N?2, each cluster of N adsorbent modules includes a common inlet manifold having a straight inlet duct of axis Xe supplying N inlet nozzles Tei, where i ranges from 1 to N, respectively connected to the inlets Ei, where i ranges from 1 to N, of the N modules of the cluster, a common outlet manifold having a straight outlet duct of axis Xs collecting the flow leaving the N outlet nozzles Tsi, where i ranges from 1 to N, respectively connected to the outlets Si, where i ranges from 1, of the N modules of the cluster.

Abstract: A process for producing a purified gas stream having impurities, using a production unit for producing a gas stream and a storage reservoir. The process includes producing a first gas stream by means of the production unit. Storing at least a portion of the first gas stream in the storage reservoir. Extracting, from the storage reservoir, a second gas stream corresponding to at least one portion of the first stream polluted by the impurities. Purifying the second gas stream by transfer of at least one portion of the impurities contained in the second gas stream into the first gas stream. And recovery of the purified gas stream at the output of the purification.

Abstract: A method for managing a pressure swing adsorption gas treatment unit, the unit having at least N adsorbers, N being a number greater than or equal to 6. Wherein, when a first group and a second group each comprise at least one operational adsorber and at least one defective adsorber. A method including a) shutting down the unit, b) isolating the defective adsorbers from the unit, c) configuring the connections to swap the instrumentation means of the defective adsorber of the first group with the instrumentation means of the operational adsorber of the second group, so that the first group once again, so far as the control device is concerned, comprises n operational adsorbers, and d) setting the control device so that it controls the unit by running the downgraded cycle, excluding the second group.

Abstract: The invention relates to a method for regulating a unit for separating a gas stream, having P adsorbers, where P?2, each following a PSA-type adsorption cycle with a phase time shift, the method involving the steps of operating the unit according to the nominal cycle when the required flow rate is equal to a nominal flow rate or optionally when the required flow rate is higher than the nominal flow rate, and operating the unit according to the reduced cycle when the required flow rate is lower than or equal to a predetermined flow rate, the predetermined flow rate being lower than the nominal flow rate.

Abstract: The invention relates to a radial adsorber comprising: an adsorbent mass containing particles, a cylindrical shell ring extending along a longitudinal axis that is vertical when the adsorber is in operation, an external grid and an internal grid arranged in such a way as to be permeable to the gas and impermeable to the particles, the internal grid and external grid between them forming an annular volume housing the adsorbent mass, an internal chamber located between the vertical longitudinal axis and the internal grid, an external chamber located between the external grid and the shell ring, the internal chamber and external chamber being intended for the circulation of the gas, the external grid being formed by a plurality of wires and a plurality of supports, the supports being mounted transversely to the wires, the supports and the wires being mounted secured to one another, the wires forming a plurality of longitudinal openings for the passage of the gas, the external grid being arranged in such a way th

Abstract: A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, thereby limiting or preventing the migration of particles between the layers.

Abstract: Certain embodiments of the invention relate to a method and facility for purifying a high-flow gas stream by absorbtion, the purification facility comprising at least one absorber having a parallelepipedal enclosure arranged horizontally and comprising: a gas stream inlet and outlet, two fixed-bed absorbent masses each having a likewise parallelepipedal shape, the surfaces of which are parallel to the surfaces of the enclosure, and a set of volumes allowing the traversing of the two absorbent masses by the gas streams, in parallel but opposite directions, the traversing occurring horizontally over the entire cross-section of each of the absorbent masses and over their entire thicknesses.

Abstract: A method for adjusting a gas stream separation unit having N adsorbers, where N?2, each following a PSA, VSA or VPSA adsorption cycle, with a time lag of a phase time, said adjustment method including continuously measuring a physical parameter associated with the gas stream entering and/or leaving the adsorber; for at least one step of the adsorption cycle, determining at least one characteristic value of the step chosen in step a) which is selected from the values of the physical parameter measured in step a) or a function of those values; comparing this characteristic value with a target value; and modifying the flow of the gas stream in order to obtain the target value, in the event of a variation between the value of this (these) difference(s) and the target values.

Abstract: A gas processing vessel of cylindrical shape having a cylindrical shell of the vertical axis, a gas distribution device and a first particulate material, the distribution device being fixed in the vessel next to a gas inlet or outlet orifice recessed into a lower end wall, a cover being designed to be in contact without a weld with the lower end wall and having a diameter greater than or equal to one third of the diameter of the vessel, a second particulate material with an equivalent diameter De greater than or equal to 10 mm and greater than the dimensions of the openings in the cover, and a means for centering the cover above the inlet or outlet orifice, the means being fixed to the pipe that is connected to the orifice.

Abstract: A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, so as to limit or prevent the migration of particles between the layers.

Abstract: A process for regulating a unit for the production of oxygen from atmospheric air comprising N adsorbers (, N being = or >2, each according to a PSA, VSA or VPSA adsorption cycle with an offset of a phase time, the regulation process including determining a value of differential pressure characteristic of a step of the adsorption cycle for each adsorber, calculating the difference between the values of differential pressures characteristic of the various adsorbers, comparing this difference with a target value and, in the event of a dissimilarity being noted, correcting by modification of the transfer of at least one oxygen-rich gas stream between adsorbers or optionally between adsorber and storage tank.

Abstract: A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, so as to limit or prevent the migration of particles between the layers.

Abstract: A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, thereby limiting or preventing the migration of particles between the layers.

Abstract: A process for producing a purified gas stream having impurities, using a production unit for producing a gas stream and a storage reservoir. The process includes producing a first gas stream by means of the production unit. Storing at least a portion of the first gas stream in the storage reservoir. Extracting, from the storage reservoir, a second gas stream corresponding to at least one portion of the first stream polluted by the impurities. Purifying the second gas stream by transfer of at least one portion of the impurities contained in the second gas stream into the first gas stream. And recovery of the purified gas stream at the output of the purification.

Abstract: A unit for purifying a gas mixture by adsorption, including at least one adsorber having at least one cluster of N identical adsorbent modules operating in parallel, where N?2, each cluster of N adsorbent modules includes a common inlet manifold having a straight inlet duct of axis Xe supplying N inlet nozzles Tei, where i ranges from 1 to N, respectively connected to the inlets Ei, where i ranges from 1 to N, of the N modules of the cluster, a common outlet manifold having a straight outlet duct of axis Xs collecting the flow leaving the N outlet nozzles Tsi, where i ranges from 1 to N, respectively connected to the outlets Si, where i ranges from 1, of the N modules of the cluster.

Abstract: A process for regulating a unit for the production of oxygen from atmospheric air comprising N adsorbers (, N being = or >2, each according to a PSA, VSA or VPSA adsorption cycle with an offset of a phase time, the regulation process including determining a value of differential pressure characteristic of a step of the adsorption cycle for each adsorber, calculating the difference between the values of differential pressures characteristic of the various adsorbers, comparing this difference with a target value and, in the event of a dissimilarity being noted, correcting by modification of the transfer of at least one oxygen-rich gas stream between adsorbers or optionally between adsorber and storage tank.

Abstract: A method for producing oxygen by adsorbing a stream of atmospheric air, using four VPSA, one air compressor and two vacuum pumps, each adsorber undergoing a single pressure cycle including the following steps: a) producing a first stream of gas having an oxygen content T1 while loading the adsorber of the stream of atmospheric air upstream; b) producing a second stream of gas including an oxygen content T2<T1: c) producing a third stream of gas including an oxygen content T3<T2<T1 while simultaneously extracting a nitrogen-enriched residual stream; d) eluting the adsorber, from which the three streams of gas produced in steps a), b), and c) are taken with the second stream of gas produced in step b); e) repressurizing the adsorber consecutively with at least two streams, first and second repressurizing streams, with increasing oxygen content.

Abstract: A method for producing oxygen by adsorbing a stream of atmospheric air, using a VPSA, including at least one adsorber, each adsorber undergoing a single pressure cycle including the following steps: a) producing a first stream of gas having an oxygen content T1 while loading the adsorber of the stream of atmospheric air upstream; b) producing a second stream of gas including an oxygen content T2<T1: c) producing a third stream of gas including an oxygen content T3<T2<T1 while simultaneously extracting a nitrogen-enriched residual stream; d) eluting the adsorber, from which the three streams of gas produced in steps a), b), and c) are taken with the second stream of gas produced in step b); e) repressurizing the adsorber consecutively with at least two streams, first and second repressurizing streams, with increasing oxygen content.

Abstract: Oxygen production process of VSA type from a flow of air, implementing at least one group of at least 3 adsorbers installed in parallel and following the same VSA cycle comprising, in succession, a phase of adsorption at the high pressure of the cycle, a phase of desorption at pressures lower than the high pressure of the cycle, a phase of repressurization of the adsorber to the high pressure of the cycle, characterized in that, periodically or exceptionally: a) at least one adsorber of the group of adsorbers is isolated so as to no longer follow the pressure cycle, b) the adsorbent contained in the adsorber isolated in the step a) is regenerated by raising the temperature, and c) the adsorber regenerated in the step b) is re-incorporated in the group of adsorbers so as to once again follow the pressure cycle.