An algae-based powdered fuel is configured to be fluidized in a gas stream. The algae-based powdered fuel is manufactured by drying an algae slurry to produce a powdered composition and then comminuting the powdered composition to produce the fuel. The algae-based powdered fuel can be combusted in a gas turbine to generate electricity and/or to propel an aircraft.

An algae-based powdered fuel is configured to be fluidized in a gas stream. The algae-based powdered fuel is manufactured by drying an algae slurry to produce a powdered composition and then comminuting the powdered composition to produce the fuel. The algae-based powdered fuel can be combusted in a gas turbine to generate electricity and/or to propel an aircraft.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

The present invention relates to a process and an equipment of fossil fuel power generation with zero carbon emission, and provides the following complete technical solution of carbon capture and storage (CCS). Power generation of oxygen enriched combustion of fossil fuel such as coal is carried out in a power plant on a carbon dioxide storage site. The generated flue gas of carbon dioxide is pressurized and injected into the saline aquifer of the carbon storage site and/or an oil/gas field in situ. The generated power is transmitted externally. The present invention has the following technical advantages. The transportation step in existing CCS technology is eliminated, namely, the whole process of carbon loading and long-distance transportation and then unloading included in the transportation step is eliminated, which greatly reduces the difficulty and cost of implementing the complete CCS technical solution, and improves the feasibility of the CCS technical solution. It is helpful for the large-scale implementation of carbon capture and storage in the course of power generation using fossil fuels such as coal, namely, fossil fuel power generation with zero carbon emission. In this way, a new technical route is provided to break through CCS predicament, and large-scale comprehensive utilization of fossil energy resources such as a large number of coal/oil-gas and geological resources of a large number of saline aquifers can be realized finally.

An engine, a biomass powder energy conversion and/or generation system, hybrid turbine engines, and methods of manufacturing and using the same are disclosed. The engine includes a housing having an inner wall and an outer wall, a central rotary shaft extending from the housing, at least one fuel and air supply channel having a first portion extending radially from the rotary shaft and a second portion in fluidic communication with first portion of the fuel and air supply channel, at least two propulsion vessels, each propulsion vessel connected to the at least one of the fuel and air supply channel and configured to burn or detonate the fuel and rotate around the central rotary shaft; and at least one exhaust duct extending from the housing.

An engine, a biomass powder energy conversion and/or generation system, hybrid turbine engines, and methods of manufacturing and using the same are disclosed. The engine includes a housing having an inner wall and an outer wall, a central rotary shaft extending from the housing, at least one fuel and air supply channel having a first portion extending radially from the rotary shaft and a second portion in fluidic communication with first portion of the fuel and air supply channel, at least two propulsion vessels, each propulsion vessel connected to the at least one of the fuel and air supply channel and configured to burn or detonate the fuel and rotate around the central rotary shaft; and at least one exhaust duct extending from the housing.

A combined heat and power (CHP) system and a method of operating is provided. The CHP system includes an oxygen-air separation device. A combustion chamber has an inlet coupled to the oxygen-air separation device. The combustion chamber receives an expanded heated CO2 working gas for combustion of solid fuel and generates a CO2 exhaust gas. The expanded heated CO2 working gas comprising at least a portion of the CO2 exhaust gas. A heat exchanger receives combustion gases and outputs a cooled CO2 working gas. A turbine is provided having a compression section and an expansion section, the compression section configured to receive and compress the cooled CO2 working gas and to direct it to the heat exchanger. The turbine receives a heated CO2 working gas at the expansion section and expands the heated CO2 working gas. In an embodiment, CO2 products may be generated from the system.

A combined heat and power (CHP) system and a method of operating is provided. The CHP system includes an oxygen-air separation device. A combustion chamber has an inlet coupled to the oxygen-air separation device. The combustion chamber receives an expanded heated CO2 working gas for combustion of solid fuel and generates a CO2 exhaust gas. The expanded heated CO2 working gas comprising at least a portion of the CO2 exhaust gas. A heat exchanger receives combustion gases and outputs a cooled CO2 working gas. A turbine is provided having a compression section and an expansion section, the compression section configured to receive and compress the cooled CO2 working gas and to direct it to the heat exchanger. The turbine receives a heated CO2 working gas at the expansion section and expands the heated CO2 working gas. In an embodiment, CO2 products may be generated from the system.

The present disclosure relates to systems and methods useful for power production utilizing direct combustion of a solid fuel, such as coal, biomass, or the like. The systems and methods can combine a first power producing cycle that is an open loop or semi-closed loop cycle with a second power producing cycle that is a closed loop cycle utilizing a recycled working fluid, preferably CO.sub.2. At least one stream from the open loop or semi-closed loop cycle can be used in a heating member to provide heat to the working fluid in the closed loop cycle. The solid fuel can be combusted at conditions facilitating easier removal of solids before a gaseous stream is treated and, optionally, at least partially recycled to the combustor as a recycle stream, preferably include CO.sub.2.