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| Number | Title | Issue Date |
| 6374636 | Bath reboiler-condenser and corresponding air distillation plant This bath reboiler-condenser (4), of the brazed plate type, includes vaporization passages (11) subdivided into a plurality of stacked vaporization regions (13A to 13C) each of which is immersed in a partial height bath (28A to 28C), and means for feeding... | 04/23/2002 |
| 6375456 | Combustion process applicable to the manufacture of cement Combustion process especially applicable to cement works, in which process it is desired to use fuels which are difficult to ignite. To do so, a flame comprising a primary zone and a secondary zone is created. The hot primary zone is created using an oxy-... | 04/23/2002 |
| 6371147 | Evaluation and regulation of the thermal power of a flow of combustible gas; characterization of a thermal mass flowmeter The subject of the present invention is: processes for the evaluation and the regulation, to a value P0, of the net (or gross) thermal power P of a flow of a combustible gas CG of composition close to that of a reference gas, said flow of gas passin... | 04/16/2002 |
| 6372903 | Method for preparing polyazacycloalkanes grafted on silica gel and use of grafted compounds The invention concerns a method for preparing polyazacycloalkanes immobilised on a silica gel from a polyazacycloalkane of formula (A) in which: R1 and R2 represent a hydrogen atom, an alkyl radical, or a [hetero(aryl)]alkyl radical;... | 04/16/2002 |
| 6354090 | Transfer line for cryogenic fluid and its use for the transfer of liquid helium Each spacing member (3) between the internal tube (2) for the transfer of fluid and the external envelope (1) have a contact zone (30) at least with the envelope (1) having an angular extent less than 90°, the contact zones with the envelope (30) and wit... | 03/12/2002 |
| 6351103 | Process for supplying electrical energy to the network with an AC generator associated with a turbine Process for supplying electrical energy to the network with an AC generator associated with a turbine, by means of a transformer, characterized in that it consists in evaluating the generator precisely as a function of the needs of the site by lowering it... | 02/26/2002 |
| 6348083 | Process and installation for the recovery and/or purification of the nitrous oxide contained in a waste gas An installation and a process for the recovery and/or purification of at least one portion of the nitrous oxide (N2 O) contained in a flow of waste gas containing nitrous oxide and at least one other gaseous compound, in which: (a) at least one... | 02/19/2002 |
| 6344361 | Method of detecting the presence of impurities, unit and method for vaporizing liquid, and double air-distillation column A film-type vaporizer in a vaporization enclosure, for example the upper column of a double air-distillation column, is associated with a measurement and analysis box where a polished surface and a spillway reconstruct the flow of liquid in the vaporizer ... | 02/05/2002 |
| 6339938 | Apparatus and process for separating air by cryogenic distillation In an air separation apparatus comprising at least two columns (104, 105) and optionally a mixing column (107), a liquid containing between 22 and 70 mol % oxygen is vaporized in a reboiler/condenser (109) against a stream of air (86) which condenses ther... | 01/22/2002 |
| 6338774 | Liquid distributor for non-vertical distillation columns, and distillation column including the same A liquid distributor includes a principal container with a perforated bottom, as well as transport members to transmit, by gravity, the liquid from at least one opening in the perforated bottom, to a supply point not in vertical alignment with this openin... | 01/15/2002 |
| 6336956 | Process for separating nitrogen from less polar compounds Process for separating nitrogen from a gas mixture containing nitrogen and at least one gas which is less polar than nitrogen, and employing a differential gas adsorption technique, called PSA process, using an adsorbent of zeolite type, according to whic... | 01/08/2002 |
| 6336332 | Pressure regulating device for a cryogenic tank and plant for delivering corresponding fluid This device comprises a closed heating chamber (36) extending through the wall (3, 4, 5) of the tank and connected to this wall, a feed pipe (22) suitable for feeding the heating chamber (36) with a heating fluid having a temperature above the temperature... | 01/08/2002 |
| 6333481 | Process and unit for plasma-arc working with a gas mixture based on hydrogen, nitrogen and/or argon Process and unit for the arc working, particularly plasma cutting, of a workpiece, in which a plasma torch is supplied with an electric current and with a gas mixture containing hydrogen and nitrogen and/or argon, and a plasma jet obtained by the ionizati... | 12/25/2001 |
| 6328786 | PSA process using an adsorbent of intrinsic strength favorable to the adsorption kinetics A PSA, especially VSA, process for separating a stream of gas, such as air, containing at least one first compound, such as nitrogen, which is preferentially adsorbed on at least one adsorbent and at least one second compound, such as oxygen, which is ads... | 12/11/2001 |
| 6321130 | Device for controlling an installation having memory for storing plurality of parameterized tasks acting on data concerning the operation of the installation The device (1) for controlling an installation (2) comprising means (9,10,11,12,13, for monitoring and/or commanding the operation of the installation (2), and a central data processing unit (14) adapted to communicate with the means for monitoring and/or... | 11/20/2001 |
| 6319303 | Process for purifying a gas and corresponding system In this process for purifying a gas by adsorption of a first impurity and of a second impurity, at least two main adsorbers (5A, 5B) and at least one auxiliary adsorber (6A, 6B) are used, the main adsorbers comprising a packing (8A, 8B, 9A, 9B) for adsorb... | 11/20/2001 |
| 6318568 | Installation for storing and holding gas cylinders The installation comprises, along a vertical frame (1), locations for gas cylinders, these locations being partially defined by a rack that can be used for transporting the cylinders (7), each location comprising, on the frame, a holding device (9, 10) th... | 11/20/2001 |
| 6318120 | Cryogenic distillation system for air separation In a process for production of oxygen enriched fluid and argon enriched fluid by cryogenic distillation of air, a feed stream (1) containing nitrogen, oxygen and argon is sent to a main column system wherein it is separated by cryogenic distillation, an a... | 11/20/2001 |
| 6314981 | Device for connecting and transfer of fluid between a supply reservoir and a receiving reservoir Process and device for connecting at least one supply reservoir (A), such as a storage reservoir, to at least one receiving reservoir (B), such as a tank truck, for the transfer of a fluid from the at least one supply reservoir (A) to the least one receiv... | 11/13/2001 |
| 6315814 | Gas separation plant and use of such a plant for producing a gas A gas separation plant includes, downstream of the line for feeding the gas separation module with a compressed gas mixture, a liquid particle separation device which includes a liquid detector, for example, of the optronic type, delivering an output sign... | 11/13/2001 |
| 6315818 | Process for the purification of a gas by adsorption A pressure swing adsorption cycle in which a regeneration phase is terminated by at least one final step in which a residual gas is withdrawn counter-current to the adsorber (1 to 3). A variable portion of the residual gas is recycled, representing from 0... | 11/13/2001 |
| 6311518 | Apparatus for countercurrent heat exchange and its application to installations for the distillation of air This apparatus (3A, 3B) is for heat exchange between at least one first fluid available at a temperature at about ambient and at least one second fluid available at a cryogenic temperature below -20° C. It comprises structure alternately to circulate the... | 11/06/2001 |
| 6311722 | Composite open bonnet for large industrial and medical gas cylinders The invention relates to an open-type protective cowling for a fluid container, particularly for a gas cylinder, made up of a cowling body (1) made of polymer comprising an insert (2) made of metal or metal alloy with a tapping (10). As a preference, the ... | 11/06/2001 |
| 6311519 | Process and plant for separating a gaseous mixture by cryogenic distillation A cryogenic distillation apparatus comprising a system of columns (9, 11) also includes at least one external source of a gas other than a column of the system and means for sending this pressurized gas to the first pump (17) in order to serve as barrier ... | 11/06/2001 |
| 6302162 | Installation for the treatment of at least one fluid, by passage through two adjacent masses of material An installation for the treatment of fluid having a receptacle (1) defining a non-vertical portion of a path for fluid through at least two adjacent masses (A; B; C) of particulate materials, typically different from each other, each mass being in direct ... | 10/16/2001 |
| 6295835 | Process for air separation by cryogenic distillation In a process for separating air in a plant comprising at least two columns (1, 3), some of the air (100) at an intermediate pressure is cooled in at least one passage of a heat-exchange system which is or are regenerated by a gas from the plant (17, 21) w... | 10/02/2001 |
| 6295869 | Capacitive measurement probe for measuring the level of a liquid and tank equipped with such a probe Capacitive measurement probe (6) for measuring the level of a liquid in a tank (1), of the type comprising a body (7) for mounting the probe and a first plate (8) which is supported by the body and is intended, together with a second plate (41), to form a... | 10/02/2001 |
| 6294053 | Liquid dispenser for oscillating distilling column, and corresponding distilling column This liquid distributor includes: a primary distributor (13) including liquid-distribution openings and delimiting N1 first compartments (22), each provided with liquid feed elements means (10, 11); and a secondary distributor (14), arranged under the primary ... | 09/25/2001 |
| 6276171 | Integrated apparatus for generating power and/or oxygen enriched fluid, process for the operation thereof In an integrated power generation system, part of the air from a gas turbine compressor is separated in a single nitrogen wash column to remove oxygen and the gaseous nitrogen produced at the top of the column is sent back to a point upstream of the expan... | 08/21/2001 |
| 6273936 | Process and plant for producing a variable gas output In this process, the apparatus for separating the feed gas is connected to the delivery side of at least one variable-rotation-speed compressor, whose speed is controlled on the basis of the measurement of a parameter representative of the flow of gas pro... | 08/14/2001 |
| 6269659 | Method and installation for air distillation with production of argon A method for air distillation with production of argon using an air distilling installation (1) comprising an air distilling apparatus (2) in particular with double column, and at least one column for producing impure argon. The installation has dimension... | 08/07/2001 |
| 6270556 | PSA or VSA unit having jointly-controlled production output and production pressure The invention relates to a process for controlling a PSA, especially VSA, plant for separating a gas stream, in particular a gas stream containing nitrogen and at least one less polar gaseous component, especially oxygen and/or hydrogen. The PSA plant ope... | 08/07/2001 |
| 6270557 | Process for purifying air by adsorption before cryogenic distillation Process for separating at least carbon dioxide (CO2) contained in a gas stream, preferably air, in which at least carbon dioxide is adsorbed on a zeolite-X having a Si/Al ratio of approximately 1 to 1.5 and containing at most 35% of K+ | 08/07/2001 |
| 6266880 | Process for producing a material and heat exchange device A process for producing a heat and material exchange device including a stack of fixed ventilators to promote gas mixing, each ventilator being constituted by four deflectors whose mean normals are inclined and generated one after another by rotation abou... | 07/31/2001 |
| 6265687 | Method of using a ternary gaseous mixture in the plasma projection of refractory materials A plasmagenic gas comprises a ternary mixture of helium, argon and hydrogen. The gas contains less than 30% helium, at least 55% argon, and from 5.5 to 15% hydrogen. The gas is energized to form a plasma. A powder of a refractory or metallic material is i... | 07/24/2001 |
| 6261344 | PSA process using a faujasite zeolite containing metal cations as adsorbent A PSA or VSA process for separating a gas flow, such as air, containing at least one first gas compound, such as nitrogen, which is preferentially adsorbed on at least one adsorbent, and at least one second gas compound, such as oxygen, which is adsorbed ... | 07/17/2001 |
| 6257020 | Process for the cryogenic separation of gases from air In an apparatus for the separation of air by cryogenic distillation, all of the air is compressed to a medium pressure. Next, one part of the air is compressed to an intermediate pressure and a fraction of this air is compressed to a high pressure. The hi... | 07/10/2001 |
| 6258152 | PSA process using an aggregated adsorbent consisting of a zeolite phase and a binder A PSA process for separating a gas flow, such as air, containing a first gas compound, such as nitrogen, which is adsorbed preferentially on an adsorbent, and a second gas compound, such as oxygen, which is adsorbed less preferentially on the adsorbent th... | 07/10/2001 |
| 6251499 | Corrugated strip for cross-corrugated packing and its use in on-board distillation columns This corrugated strip comprises on its lower edge, in front view, at least one downwardly projecting motif (9) whose contour is such that, if m and M designate the ends of the algebraic value of the angle that the tange... | 06/26/2001 |
| 6250896 | Pump for a cryogenic liquid and pump unit and distillation column which are equipped with such a pump A pump for a cryogenic liquid, in particular liquid oxygen, includes a hydraulic motor which is supplied with a motor liquid under pressure and drives a wheel for pumping the cryogenic liquid, and relative sealing device preventing contamination of the cr... | 06/26/2001 |
