Abstract:
The present invention relates to a process for separating oxygen at high temperature by means of a material comprising at least one compound according to the formula AxBO2-δ.yH2O with a lamellar structure composed of sheets generated by the sequence of octahedra connected to one another by the edges, whereby A is at least one of the elements IA or IIA of the periodic classification of elements, B is at least one of the elements IIIB to IIB of the periodic classification of the elements, 0
Abstract:
The present invention relates to a method for impregnating a porous body (14) by a suspension (12) containing at least partly particles, said body comprising a multiplicity of channels (16) delimited by porous walls (22) extending from one (18) of the faces to the other (20) face of said body, part of said channels being obstructed at one face and the other part of the channels being obstructed at the other face.According to the invention, the method consists in: making a suspension whose particle size distribution meets a DV90/Dpores ratio below 0.25 and whose viscosity is such that said suspension is brought inside the walls while depositing part of the particles on the surface of the pores of the walls, communicating one (18, 20) of the faces of body (14) with an enclosure (30) containing the suspension, feeding the suspension into the body, exerting a force on the suspension introduced so that said suspension flows through the walls, passing a fluid through the walls.
Abstract:
The invention relates to a novel type of active mass and to the use thereof in chemical loopping combustion processes. Said active mass contains a spinel which corresponds to the formula AxA′x′ByB′y′O4. The active masses according to the invention have a high oxygen transfer capacity and oxidation and reduction rates which allow their advantageous use in the looping combustion process.
Abstract:
The invention relates to the use of materials of mixed iron-manganese oxide type for high-temperature oxygen production, notably by separation of oxygen from air, and said materials can be reversibly reduced at high temperature when subjected to an oxygen partial pressure decrease and oxidized when the oxygen partial pressure is higher.The oxidized form of mixed iron-manganese oxides has a bixbyite and/or hematite structure.
Abstract:
A recoil device is provided for a gun having a barrel with a breech. The device includes a breech nut, a brake assembly, a pneumatic spring and a counter-recoil buffer. The breech nut has first and second adjacent sides. The brake assembly includes a brake cylinder that mounts to the breech nut on the first side. The pneumatic spring mounts to the breech nut on the second side. The counter-recoil buffer attaches to the pneumatic spring. The brake cylinder and the pneumatic spring internally push fluids for recoil absorption and return in response to firing the gun.
Abstract:
The invention relates to the use of materials of mixed iron-manganese oxide type for high-temperature oxygen production, notably by separation of oxygen from air, and said materials can be reversibly reduced at high temperature when subjected to an oxygen partial pressure decrease and oxidized when the oxygen partial pressure is higher. The oxidized form of mixed iron-manganese oxides has a bixbyite and/or hematite structure.
Abstract:
The invention relates to a method for chemical-looping redox combustion on an active mass including a binder, in form of a fluidized-bed catalytic cracking catalyst containing silica and alumina, and a metal oxide active phase. The active mass is obtained by impregnating metal salts on a new or used catalytic cracking catalyst. Advantageously, the invention applies to the sphere of CO2 capture.
Abstract:
The invention relates to an integrated method of in-situ oxygen production, chemical looping combustion and gasification of liquid, solid or gaseous fuels allowing combustion of coal, petroleum coke and/or liquid hydrocarbons and notably heavy and/or extra heavy or bituminous residues for production of synthesis gas under pressure and/or energy.
Abstract:
A redox mass for chemical looping combustion processes includes a redox pair or set of pairs having a material able to be alternatively oxidized and reduced between CuO and Cu, between Cu2O and Cu, between NiO and Ni, between MnO2 and Mn2O3, between Mn2O3 and Mn3O4, between Mn3O4 and MnO, between MnO and Mn, between CO3O4 and CoO or between CoO and Co, and a binder containing at least one mixed cerine-zirconia oxide (Ce/Zr) of the general formula CexZr1-xO2, where 0.05≦x≦0.95.
Abstract translation:用于化学循环燃烧过程的氧化还原物质包括在MnO 2和Mn 2 O 3之间,Mn 2 O 3和Mn 3 O 4之间具有能够在CuO和Cu之间,NiO和Ni之间,NiO和Ni之间,MnO 2和Mn 2 O 3之间在CuO和Cu之间交替氧化和还原的材料的氧化还原对或成对 MnO和Mn之间,CO 3 O 4与CoO之间或CoO和Co之间的粘合剂,以及含有至少一种通式CexZr1-xO2的混合铈 - 氧化锆(Ce / Zr)的粘合剂,其中0.05< x≦̸ 0.95。
Abstract:
The present invention relates to a new type of redox mass that can be used in any chemical looping combustion process, said mass comprising a binder containing at least cerine-zirconia.