The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is hi the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least at least one feldspar or feldspathoid with a melting point higher than 1500 C., such as celsian, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from a precursor of the ceramic matrix, obtained from a macroporous zeolitic material with zeolite crystals of a specific size, and a precursor of the oxidation-reduction active mass.

Apparatus for increasing burning efficiency including a bottom shell having a plate defining a first opening for receiving a fuel source and a side wall extending in an upward direction. The side wall has a first side wall end coupled to the plate and a second side wall end spaced from the first side wall end in the upward direction. Additionally, the apparatus includes a top shell having inner and outer walls defining a cavity for receiving the second side wall end of the side wall of the bottom shell. The inner wall has a first inner end and a second inner end and the outer wall has a first outer end and a second outer end. The first inner end is coupled to the first outer end and the second inner end is spaced from the second outer end to receive at least the second side wall end.

Disclosed herein is a method of regenerating a sorbent of gas in a capture process of said gas, wherein the capture process comprises recirculating the sorbent between a gas capturing system and regenerating reactor system, the method comprising the regenerating reactor system performing the steps of: receiving a solid sorbent to be regenerated, wherein the sorbent is a sorbent of carbon dioxide gas; generating heat by combusting a fuel with an oxidising agent in the presence of a catalyst; regenerating the sorbent by using the generated heat to indirectly heat the sorbent so that the sorbent releases carbon dioxide gas; outputting the regenerated sorbent; and outputting the released carbon dioxide gas. Advantages of the gas capture system include a higher efficiency than known techniques.

Disclosed herein is a method of regenerating a sorbent of gas in a capture process of said gas, wherein the capture process comprises recirculating the sorbent between a gas capturing system and regenerating reactor system, the method comprising the regenerating reactor system performing the steps of: receiving a solid sorbent to be regenerated, wherein the sorbent is a sorbent of carbon dioxide gas; generating heat by combusting a fuel with an oxidising agent in the presence of a catalyst; regenerating the sorbent by using the generated heat to indirectly heat the sorbent so that the sorbent releases carbon dioxide gas; outputting the regenerated sorbent; and outputting the released carbon dioxide gas. Advantages of the gas capture system include a higher efficiency than known techniques.

In accordance with one embodiment of the present disclosure, an oxygen carrying material may include a primary active mass, a primary support material, and a secondary support material. The oxygen carrying material may include about 20% to about 70% by weight of the primary active mass, the primary active mass including a composition having a metal or metal oxide selected from the group consisting of Fe, Co, Ni, Cu, Mo, Mn, Sn, Ru, Rh, and combinations thereof. The oxygen carrying material may include about 5% to about 70% by weight of a primary support material. The oxygen carrying material may include about 1% to about 35% by mass of a secondary support material.

In accordance with one embodiment of the present disclosure, an oxygen carrying material may include a primary active mass, a primary support material, and a secondary support material. The oxygen carrying material may include about 20% to about 70% by weight of the primary active mass, the primary active mass including a composition having a metal or metal oxide selected from the group consisting of Fe, Co, Ni, Cu, Mo, Mn, Sn, Ru, Rh, and combinations thereof. The oxygen carrying material may include about 5% to about 70% by weight of a primary support material. The oxygen carrying material may include about 1% to about 35% by mass of a secondary support material.

The invention provides highly reactive nano-sized alumina particle compositions, including alumina compositions with a BET surface areas on the order of 2000 m.sup.2/g. Also disclosed are impregnated alumina supports comprising materials that are metal oxides or carbonates. Methods for the synthesis and fabrication of these compositions are provided, along methods for the use of these compositions as sorbents.

The invention provides highly reactive nano-sized alumina particle compositions, including alumina compositions with a BET surface areas on the order of 2000 m.sup.2/g. Also disclosed are impregnated alumina supports comprising materials that are metal oxides or carbonates. Methods for the synthesis and fabrication of these compositions are provided, along methods for the use of these compositions as sorbents.

A burner using a high-temperature combustion catalyst is disclosed. The disclosed burner using a high-temperature combustion catalyst comprises: a mixing and dispensing unit for mixing and dispensing fuel gas and air, which are to be supplied; a combustion catalyst unit for generating heat by catalytically combusting with the fuel gas to be supplied from the mixing and dispensing unit; and a premixing chamber for preliminarily mixing a combustion gas which is to enter the combustion catalyst unit while connecting the mixing and dispensing unit and the combustion catalyst unit, wherein the combustion catalyst unit comprises: a front/rear-open housing having a chamber therein; perforated plates provided on the front and rear surfaces of the housing so as to allow the fuel gas to pass through from the rear of the housing to the front thereof; a pellet-type combustion catalyst filled inside of the chamber of the housing; and a heat source means for generating a heat source for the catalytic combustion of the combustion catalyst. The high-temperature combustion catalyst further comprises preparation by the steps of: preparing a metal precursor solution containing a transition metal nitrate, an alkaline earth metal nitrate, and aluminum nitrate; preparing a precipitation solution; preparing a mixture solution by mixing the metal precursor solution and the precipitation solution; increasing the temperature of the mixture solution to 90100 C. and maintaining the same for 1048 hours so as to cause precipitation; separating a precipitate slurry, which is formed by precipitation, from the mixture solution by filtering the same; washing the precipitate slurry; performing drying in order to remove water contained in the washed precipitate slurry; and performing firing at 1,0001,500 C. in order to remove water remaining in the dried precipitate slurry.

A burner using a high-temperature combustion catalyst is disclosed. The disclosed burner using a high-temperature combustion catalyst comprises: a mixing and dispensing unit for mixing and dispensing fuel gas and air, which are to be supplied; a combustion catalyst unit for generating heat by catalytically combusting with the fuel gas to be supplied from the mixing and dispensing unit; and a premixing chamber for preliminarily mixing a combustion gas which is to enter the combustion catalyst unit while connecting the mixing and dispensing unit and the combustion catalyst unit, wherein the combustion catalyst unit comprises: a front/rear-open housing having a chamber therein; perforated plates provided on the front and rear surfaces of the housing so as to allow the fuel gas to pass through from the rear of the housing to the front thereof; a pellet-type combustion catalyst filled inside of the chamber of the housing; and a heat source means for generating a heat source for the catalytic combustion of the combustion catalyst. The high-temperature combustion catalyst further comprises preparation by the steps of: preparing a metal precursor solution containing a transition metal nitrate, an alkaline earth metal nitrate, and aluminum nitrate; preparing a precipitation solution; preparing a mixture solution by mixing the metal precursor solution and the precipitation solution; increasing the temperature of the mixture solution to 90100 C. and maintaining the same for 1048 hours so as to cause precipitation; separating a precipitate slurry, which is formed by precipitation, from the mixture solution by filtering the same; washing the precipitate slurry; performing drying in order to remove water contained in the washed precipitate slurry; and performing firing at 1,0001,500 C. in order to remove water remaining in the dried precipitate slurry.