Abstract: A method of controlling a process of generating power in a power plant with a boiler by combusting carbonaceous fuel with substantially pure oxygen. At full load conditions, the method includes introducing a first carbonaceous fuel feed stream into a furnace, introducing a first substantially pure oxygen feed stream into the furnace for combusting the first carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a first recirculation flow rate to the furnace, to form, together with the first substantially pure oxygen feed stream, a first inlet gas stream having a predetermined average oxygen content, thereby discharging exhaust gas from the furnace at a first discharge flow rate.

Abstract: A method of and a plant for combusting carbonaceous fuel, the method including the steps of introducing particulate oxygen selective sorbent, such as a perovskite type material, into an adsorption reactor of the combustion plant to form a first particle bed in the adsorption reactor, fluidizing the first particle bed by an oxygen-containing first fluidizing gas to adsorb oxygen from the fluidizing gas to the sorbent, conveying oxygen-rich sorbent from the adsorption reactor to a combustion reactor of the combustion plant to form a second particle bed in the combustion reactor, fluidizing the second particle bed by an oxygen-deficient second fluidizing gas to desorb oxygen from the sorbent, so as to produce free oxygen gas, and introducing carbonaceous fuel into the combustion reactor to oxidize the fuel with the free oxygen gas.

Abstract: A method of and a power plant for generating power by combusting carbonaceous fuel with substantially pure oxygen, and a method of modifying a process of generating power by combusting carbonaceous fuel from combusting the fuel with air to combusting the fuel with substantially pure oxygen.

Abstract: A method of and an apparatus for capturing CO2 from flue gas emanating from a carbonaceous fuel combusting power plant, which includes a source of oxygen and a combustion chamber for combusting the fuel with oxygen and thereby producing flue gas that includes CO2, water and excess oxygen as its main components. At least a portion of the flue gas is compressed to a pressure higher than about sixty bar, the compressed flue gas is cooled in a primary CO2 separating unit for capturing a first portion of the CO2 by condensing it to produce a liquid CO2 stream and a high pressure vent gas stream that includes oxygen and excess CO2, the liquid CO2 stream is discharged from the power plant, and the high pressure vent gas stream is conducted to a secondary CO2 separating unit for capturing a second portion of the CO2 by adsorbing it to an adsorbing material.

Abstract: Gold(III)phosphine complexes [Aum(CNC)mL]n+ (where HCNCH=2,6-diphenylpyridine) and their use as anti-tumor agents are disclosed. Notable results for the appearance of new potential anti-tumor application of these gold(III) complexes are reported. The described complexes show promising cytotoxic properties toward cancer cells in both in vitro and in vivo studies.

Abstract: A catalyst, a method of and an arrangement for using a catalyst for controlling NO and/or CO emissions from a combustion system that combusts carbonaceous fuels, including introducing carbonaceous fuel and combustion air into a furnace of the combustion system for combusting the carbonaceous fuel in oxidizing conditions and producing flue gas that includes NO and/or CO, wherein the ratio of molar concentrations of CO and NOx is preferably at least 0.7, and leading flue gas from the furnace to contact with a catalyst in a flue gas channel, wherein the catalyst has a metal oxide loading comprising oxides of iron and one or more of a group consisting of copper, cerium and potassium, deposited on a porous support material, wherein the metal oxide loading is preferably 1-20% of the weight of the support material and ratio of the weight of oxides the group consisting of copper, cerium and potassium to the weight of iron oxides is preferably from 0.

Abstract: A catalyst, a method of and an arrangement for using a catalyst for controlling NO and/or CO emissions from a combustion system that combusts carbonaceous fuels, including introducing carbonaceous fuel and combustion air into a furnace of the combustion system for combusting the carbonaceous fuel in oxidizing conditions and producing flue gas that includes NO and/or CO, wherein the ratio of molar concentrations of CO and NOx is preferably at least 0.7, and leading flue gas from the furnace to contact with a catalyst in a flue gas channel, wherein the catalyst has a metal oxide loading comprising oxides of iron and and one or more of a group consisting of copper, cerium and potassium, deposited on a porous support material, wherein the metal oxide loading is preferably 1-20% of the weight of the support material and ratio of the weight of oxides the group consisting of copper, cerium and potassium to the weight of iron oxides is preferably from 0.

Abstract: A method of co-producing activated carbon in a circulating, fluidized bed gasification process includes gasifying carbonaceous fuel in a fluidized bed to form syngas and char, activating the char to form particles of activated carbon, discharging syngas and particulate solids entrained with the syngas from the reactor, separating entrained solids from the syngas with a particle separator and returning at least a portion of the separated solids to the reaction chamber, but allowing a solids product, including activated carbon and having an average size smaller than a predetermined size, to exit the particle separator with the syngas. The solids product is separated from the syngas in a dust separator to form cleaned syngas, and both the cleaned syngas and the solids product are discharged from the gasifier.

Abstract: A system and a method for controlling NOX emissions from a boiler that combusts carbonaceous fuels. The method includes the steps of (a) introducing carbonaceous fuel and combustion air into a furnace of the boiler for combusting the carbonaceous fuel in oxidizing conditions and producing flue gas including NOX and CO, and (b) leading flue gas from the furnace to a catalyst section in a flue gas channel for converting, free from introducing an external agent for NOX reduction, NOX to N2 and CO to CO2 by using CO as the reductant of NOX on a catalyst in the catalyst section.

Abstract: A power generating system having a hybrid gasification cycle, in which CO2 is recycled to a gasifier to be used as a gasification reactant and working fluid. The power generating system includes a source of fresh, pure oxygen, a gasifier, a particle separator arranged in flow connection with the gasifier, a syngas combustor, a gas turbine arranged in flow connection with the syngas combustor, a steam generator arranged in flow connection with the outlet of the gas turbine, and a gas compressor system which discharges a stream of compressed exhaust gas. A first portion of the stream of compressed exhaust gas is conducted to the gasifier to control the temperature in the gasifier, to provide CO2 and steam for gasification, and to decrease the demand for fresh, pure oxygen therein.

Abstract: A power generating system having a hybrid gasification cycle, in which CO2 is recycled to a gasifier to be used as a gasification reactant and working fluid. The power generating system includes a source of fresh, pure oxygen, a gasifier, a particle separator arranged in flow connection with the gasifier, a syngas combustor, a gas turbine arranged in flow connection with the syngas combustor, a steam generator arranged in flow connection with the outlet of the gas turbine, and a gas compressor system which discharges a stream of compressed exhaust gas. A first portion of the stream of compressed exhaust gas is conducted to the gasifier to control the temperature in the gasifier, to provide CO2 and steam for gasification, and to decrease the demand for fresh, pure oxygen therein.

Abstract: A system and a method for controlling NOX emissions from a boiler that combusts carbonaceous fuels. The method includes the steps of (a) introducing carbonaceous fuel and combustion air into a furnace of the boiler for combusting the carbonaceous fuel in oxidizing conditions and producing flue gas including NOX and CO, and (b) leading flue gas from the furnace to a catalyst section in a flue gas channel for converting, free from introducing an external agent for NOX reduction, NOX to N2 and CO to CO2 by using CO as the reductant of NOX on a catalyst in the catalyst section.

Abstract: The present invention relates to compositions and methods for the stimulation of nerve cell growth and the regeneration of nerve tissue. Using engineered “helper” cells and nerve growth conduits, in vivo stimulation of nerve cell growth, for example, in damaged or diseased tissues, is achieved.

Abstract: A multi-stage topping combustor unit having rich burn, and lean burn zones followed by a quench/dilution zone. Combustible fuel gas is supplied only to the rich burn zone, and an oxygen-containing air-flue gas mixture is supplied to all three zones in a fixed flow proportioning that establishes a desired temperature profile through the combustor unit that minimizes combustor NOx and CO emissions. The combustor unit casing is cooled by an augmented air and oxygen stream discharged into the rich burn zone only, or into both the rich and lean burn zones. The cooling air flow is regulated by a control device/valve that allows the cooling air flow, and hence the augmenting oxygen entering the rich burn zone or the rich and lean burn zones, to be reduced as the fuel gas flow/firing temperature is reduced.

Abstract: A process for producing mechanical power utilizing compressed and humidified hot air and a fuel, which are mixed together and combusted and the resulting hot combustion gas is expanded through a gas turbine. The air is initially compressed and intercooled against a water stream, and then further compressed and passed directly to a heat recovery unit where it is humidified using the water from the compressed air intercooling step. The compressed humidified air is further heated against hot turbine exhaust gas and combined with a fuel in a combustor, and the resulting hot combustion gas is expanded through a gas turbine to produce mechanical power needed for driving the air compression. The hot turbine exhaust gas is cooled countercurrently against the compressed humidified air stream and against the water stream, and then discharged to the atmosphere.