Abstract: A reactor intended to carry out partial oxidation reactions starting from liquid feedstocks that can go from GPL to gas oil for the purpose of producing synthesis gas is characterized by finely controlled hydrodynamics and a high degree of thermal integration, and comprises an elongated jacket along an axis of any orientation, means (12) for supplying a preheated gas that contains oxygen and optionally water vapor, means (9) for supplying a hydrocarbon feedstock, means (11) for evacuation of a hydrogen-rich effluent, a first internal chamber (5) inside of which is carried out an essentially isothermal partial oxidation reaction that is connected to means (9) for supplying the hydrocarbon feedstock and to means (12) for supplying preheated gas, gas turbulizing means that are suitable for creating a perfect mixing flow, means (8) for linking first chamber (5) to a second chamber (7) with a suitable volume for carrying out a piston flow, linking means (8) that comprise at least one orifice, and second chamber (7

Abstract: A reactor intended to carry out partial oxidation reactions starting from liquid feedstocks that can go from GPL to gas oil for the purpose of producing synthesis gas is characterized by finely controlled hydrodynamics and a high degree of thermal integration, and comprises an elongated jacket along an axis of any orientation, means (12) for supplying a preheated gas that contains oxygen and optionally water vapor, means (9) for supplying a hydrocarbon feedstock, means (11) for evacuation of a hydrogen-rich effluent, a first internal chamber (5) inside of which is carried out an essentially isothermal partial oxidation reaction that is connected to means (9) for supplying the hydrocarbon feedstock and to means (12) for supplying preheated gas, gas turbulizing means that are suitable for creating a perfect mixing flow, means (8) for linking first chamber (5) to a second chamber (7) with a suitable volume for carrying out a piston flow, linking means (8) that comprise at least one orifice, and second chamber (7

Abstract: A reactor intended to carry out partial oxidation reactions starting from liquid feedstocks that can go from GPL to gas oil for the purpose of producing synthesis gas is characterized by finely controlled hydrodynamics and a high degree of thermal integration, and comprises an elongated jacket along an axis of any orientation, means (12) for supplying a preheated gas that contains oxygen and optionally water vapor, means (9) for supplying a hydrocarbon feedstock, means (11) for evacuation of a hydrogen-rich effluent, a first internal chamber (5) inside of which is carried out an essentially isothermal partial oxidation reaction that is connected to means (9) for supplying the hydrocarbon feedstock and to means (12) for supplying preheated gas, gas turbulizing means that are suitable for creating a perfect mixing flow, means (8) for linking first chamber (5) to a second chamber (7) with a suitable volume for carrying out a piston flow, linking means (8) that comprise at least one orifice, and second chamber (7

Abstract: The invention consists of an application of radiant burners to furnaces for heat treatment of hydrocarbon feedstocks in which the feedstock that is to be treated circulates inside an exchange tube bundle that receives the heat that is emitted by the burners essentially by radiation and for which a strict monitoring of the temperature profile along the exchange bundle is necessary. Applied to steam-cracking furnaces, the invention makes it possible to increase the propylene yield to iso ethylene yield. It also makes it possible to increase the compactness of the furnace and the longevity of the exchange bundle and to reduce the NOx emissions.

Abstract: Reactor device (R) for carrying out chemical reactions requiring heat exchange, the reactor is elongate along an axis (XX?), and has, at a first end, at least one orifice (16) for supplying at least one reactant, at an opposite end, at least one orifice (18) for evacuating the effluents formed, a plurality of heat exchangers (12) separated by at least one internal partition (14) and passages for circulating the reactant or reactants and/or effluents, provided between the heat exchangers and the internal partitions. The reactor (R) has at least one enclosure (10) made of refractory material providing heat insulation and containing a heat exchangers (12) and internal partitions (14). The enclosure is contained in an envelope (20) to contain the reactant or reactants and/or effluents circulating inside the reactor.

Abstract: Relative and controlled sealing between a pipe (1) and a ceramic tube (7) utilizes a cylindrical chamber (5) that is attached in a sealed manner to the pipe (1), and to one end of the ceramic tube that is placed inside the chamber. At least two sets of sealing fixtures (3, 3?) are placed in an annular space between the ceramic tube and the chamber. A crosspiece (4) is interposed between the two sets sealing of fixtures (3, 3?). A metal mating flange (6) is pressed against a compression ring (4?) to compress the sealing fixtures (3, 3?). Injection of a fluid (8) between the two sets of sealing fixtures (3, 3?) applies a pressure differential that is determined on each of the fixtures.

Abstract: A device has a reaction chamber with at least one feed inlet (5) and at least one evacuation outlet (10). An outside jacket (2a) that is resistant to internal pressure is positioned around the device and contains at least one module (44) through which a reagent and formed products circulate. The module (44) has walls (11) and (12) made of refractory material that are included in a sealed jacket (40). The sealed jacket (40) is connected by a flexible connection to the jacket (2a) and to a heat exchanger that is also linked to the module (44) and to the jacket (2a) by a flexible connection.

Abstract: The invention relates to a device for producing a hot gas by oxidation of an active material exhibiting an oxidized form and a reduced form by means of a simulated-rotation reactor.

Abstract: Device for connection with relative and controlled sealing between a pipe (1) and a ceramic tube (7) comprising:

Abstract: Device for connecting a heat exchange pipe (4), whereby said pipe (4) is positioned between walls (11) that are located on both sides of pipe (4), intended for heating and/or cooling a reactor, whose internal pressure is considerably higher than the atmospheric pressure and than the pressure that prevails inside said pipe (4), and said reactor, whereby said device comprises a series of cooperating means that comprise: means for connecting this pipe (4) and jacket (2a) of said reactor, whereby said means comprise a packing box (21, 22, 23), a flange (28) that is attached to jacket (2a) of the reactor by means of a joint (18), a bellows (25) that is placed between packing box (21, 22, 23) and said flange (28) to ensure a relatively flexible connection between pipe (4) and jacket (2a) of the reactor. FIG. 3 to be published.

Abstract: The invention consists of an application of radiant burners to furnaces for heat treatment of hydrocarbon feedstocks in which the feedstock that is to be treated circulates inside an exchange tube bundle that receives the heat that is emitted by the burners essentially by radiation and for which a strict monitoring of the temperature profile along the exchange bundle is necessary. Applied to steam-cracking furnaces, the invention makes it possible to increase the propylene yield to iso ethylene yield. It also makes it possible to increase the compactness of the furnace and the longevity of the exchange bundle and to reduce the NOx emissions.

Abstract: A new type of reactor that is intended to carry out partial oxidation reactions starting from liquid feedstocks that can go from GPL to gas oil for the purpose of producing synthesis gas is described. This reactor is characterized by finely controlled hydrodynamics and a high degree of thermal integration.

Abstract: Device that comprises a reaction chamber that comprises at least one feed means (5) and at least one evacuation means (10), comprising an outside jacket (2a) that is resistant to internal pressure and that contains at least one module (44) through which a reagent and formed products circulate. Module (44) that comprises walls (11) and (12) that are made of refractory material included in a sealed jacket (40) that is connected by flexible means to jacket (2a) and heat exchange means that are also linked to the module and the jacket by flexible means.

Abstract: Absorbent sulfur oxide composition, regeneratable, usable in thermal generators and comprising a magnesian type pulverulent absorbent. According to the invention, the composition further comprises a powder having a grain size less than 50 micrometers and containing at least one metallic oxide.

Abstract: A steam-cracking process with a very high degree of severity of a feedstock that comprises at least 20% by weight of hydrocarbons of the group that is formed by ethane and propane in which the feedstock that is diluted with water vapor is circulated in the radiation zone of a furnace, in at least one pipe with a length L≧14 m and a hydraulic diameter that is greater than or equal to 34 mm in the end portion of the pipe at least, is described under the following conditions of dwell time &tgr; and furnace output temperature COT: 120 ms≦&tgr;≦2800 ms and 858° C.≦COT≦1025° C. to obtain a conversion of at least 77% of ethane of the feedstock if the feedstock contains ethane and/or a conversion of at least 96% of the propane of the feedstock if the feedstock contains propane, and to maintain this conversion for a cycle time that is greater than or equal to about 8 days.

Abstract: Reactor device (R) for carrying out chemical reactions requiring heat exchange, the reactor is elongate along an axis (XX′), and has, at a first end, at least one orifice (16) for supplying at least one reactant, at an opposite end, at least one orifice (18) for evacuating the effluents formed, a plurality of heat exchangers (12) separated by at least one internal partition (14) and passages for circulating the reactant or reactants and/or effluents, provided between the heat exchangers and the internal partitions. The reactor (R) has at least one enclosure (10) made of refractory material providing heat insulation and containing a heat exchangers (12) and internal partitions (14). The enclosure is contained in an envelope (20) to contain the reactant or reactants and/or effluents circulating inside the reactor.

Abstract: Device for connecting a heat exchange pipe (4), whereby said pipe (4) is positioned between walls (11) that are located on both sides of pipe (4), intended for heating and/or cooling a reactor, whose internal pressure is considerably higher than the atmospheric pressure and than the pressure that prevails inside said pipe (4), and said reactor, whereby said device comprises a series of cooperating means that comprise: means for connecting this pipe (4) and jacket (2a) of said reactor, whereby said means comprise a packing box (21, 22, 23), a flange (28) that is attached to jacket (2a) of the reactor by means of a joint (18), a bellows (25) that is placed between packing box (21, 22, 23) and said flange (28) to ensure a relatively flexible connection between pipe (4) and jacket (2a) of the reactor.

Abstract: A process for thermal pyrolysis of a feedstock containing at least 80% ethane to convert to ethylene at a conversion rate of at least equal 80% by feeding the feedstock into a reaction zone in which heating means are arranged approximately perpendicular to the direction of flow of the feedstock. The temperature of the outlet of the heating zone in the reaction zone is between 880 and 960° C. and the dwell time of the feedstock in the heating zone is between 1005 and 3000 milliseconds.

Abstract: A device for removing carbon deposits on solid objects, includes an inlet (102) for the objects to be treated, a zone (101a) for heating the objects having a feed (104) and an outlet for the heating gas, a zone (101b) for treating the objects by oxidation and/or gasification having a feed (105) and an outlet (108) for the gasification fluid, an outlet (118) for the treated objects. The heating zone (101a ) and the treating zone (101b) are situated in a single enclosure (100) and comprise a substantially flat-bottomed vibrating element (101) intended for transport of the objects, the bottom allowing support of the objects, diffusion of the fluid through the objects and transmission of the vibrations. A zone (101c) for cooling solids, placed in the enclosure (100) downstream from the treating zone (101b) in relation to the direction of displacement of the solids in the enclosure (100), and a heater (115) external to enclosure (100) is provided.

Abstract: According to the invention, regeneration is performed by filtering and by regenerating simultaneously the used absorbent; two stages are carried out for the regeneration: one, which is a rough stage, is performed in the presence of a regeneration gas; the other, a free stage, is performed in the presence of a fresh regeneration gas.