A method for operating an oxycombustion engine system includes passing a nitrogen-depleted gas, a fuel, and a recycled exhaust gas into a combustion chamber, combusting a mixture of the nitrogen-depleted gas, the fuel, and the recycled exhaust gas, thereby producing an exhaust gas including carbon dioxide, detecting a pressure of the recycled exhaust gas passed to the combustion chamber, determining whether the detected pressure of the recycled exhaust gas is less than a configurable pressure threshold, and in response to determining that the detected pressure of the recycled exhaust gas is less than the configurable pressure threshold, increasing the pressure of the recycled exhaust gas passed to the combustion chamber.

An exhaust gas recirculation (EGR) mixer for use in a power generation system is provided. The EGR mixer includes a mixing chamber defining a flow direction and a working fluid inlet coupled with the mixing chamber for introducing a working fluid into the mixing chamber along the flow direction. The EGR mixer also includes exhaust gas injection ducts extending across the mixing chamber downstream from the working fluid inlet. Each of the exhaust gas injection ducts is oriented to receive exhaust gases being recirculated within the power generation system and to inject the exhaust gases into the mixing chamber in a direction that intersects the flow direction to generate a turbulent flow within the mixing chamber. The EGR mixer also includes an outlet coupled with the mixing chamber for directing a mixture of the exhaust gases and the working fluid to a compressor within the power generation system.

An exhaust gas recirculation (EGR) mixer for use in a power generation system is provided. The EGR mixer includes a mixing chamber defining a flow direction and a working fluid inlet coupled with the mixing chamber for introducing a working fluid into the mixing chamber along the flow direction. The EGR mixer also includes exhaust gas injection ducts extending across the mixing chamber downstream from the working fluid inlet. Each of the exhaust gas injection ducts is oriented to receive exhaust gases being recirculated within the power generation system and to inject the exhaust gases into the mixing chamber in a direction that intersects the flow direction to generate a turbulent flow within the mixing chamber. The EGR mixer also includes an outlet coupled with the mixing chamber for directing a mixture of the exhaust gases and the working fluid to a compressor within the power generation system.

A method for supplying hydrogen-operated internal combustion engines with oxygen, wherein an inert gas is cycled. An economical local supply of pure oxygen for a closed-cycle hydrogen engine with argon cycling is realized by separating the oxygen from the atmosphere without relying on the useful work of the engine. OSM ceramics and exhaust gas heat and low oxygen partial pressure of the exhaust gas are used to generate oxygen. Two reactors filled with OSM ceramics are used, these reactors being alternately purged with exhaust gas and regenerated with air. Losses of inert gases and the entry of atmospheric nitrogen are avoided by intermediate purging with steam. The steam is generated by the heat of the exhaust gas or exhaust air. A mixture of water vapor, inert gas and oxygen is formed during purging. Subsequently, the oxygen content in the gas phase is markedly increased since water vapor is condensed out.

A method for supplying hydrogen-operated internal combustion engines with oxygen, wherein an inert gas is cycled. An economical local supply of pure oxygen for a closed-cycle hydrogen engine with argon cycling is realized by separating the oxygen from the atmosphere without relying on the useful work of the engine. OSM ceramics and exhaust gas heat and low oxygen partial pressure of the exhaust gas are used to generate oxygen. Two reactors filled with OSM ceramics are used, these reactors being alternately purged with exhaust gas and regenerated with air. Losses of inert gases and the entry of atmospheric nitrogen are avoided by intermediate purging with steam. The steam is generated by the heat of the exhaust gas or exhaust air. A mixture of water vapor, inert gas and oxygen is formed during purging. Subsequently, the oxygen content in the gas phase is markedly increased since water vapor is condensed out.

The present invention concerns a closed cycle combustion system for endothermic engines M, comprising: —Means Z for filtering combustion air entering in endothermic engines M; —Means A for molecular re-aggregation of the oxygen supplied by said means Z and entering in endothermic engines M; —Tanks T for fuels or composite mixtures for feeding endothermic engines M; —Means E for producing oxygen and hydrogen; —Means I for the introduction into endothermic engines M of fuels or composite mixtures from tanks T, together with oxygen and hydrogen from said means E; —Means R for exhaust gases recovery released by endothermic engines M and for the partial reintroduction of said exhaust gases into combustion or reaction chambers of said endothermic engines M; —Means RD for cooling the exhaust gases reintroduced into said combustion or reaction chambers of said endothermic engines M; —Means C1 and C2 for filtering the exhaust gases released from endothermic engines M, and supplied by means R; —Means S for confining the polluting substances obtained from the filtering of said exhaust gases released from said endothermic engines M, supplied by said means R.

The present invention concerns a closed cycle combustion system for endothermic engines M, comprising: —Means Z for filtering combustion air entering in endothermic engines M; —Means A for molecular re-aggregation of the oxygen supplied by said means Z and entering in endothermic engines M; —Tanks T for fuels or composite mixtures for feeding endothermic engines M; —Means E for producing oxygen and hydrogen; —Means I for the introduction into endothermic engines M of fuels or composite mixtures from tanks T, together with oxygen and hydrogen from said means E; —Means R for exhaust gases recovery released by endothermic engines M and for the partial reintroduction of said exhaust gases into combustion or reaction chambers of said endothermic engines M; —Means RD for cooling the exhaust gases reintroduced into said combustion or reaction chambers of said endothermic engines M; —Means C1 and C2 for filtering the exhaust gases released from endothermic engines M, and supplied by means R; —Means S for confining the polluting substances obtained from the filtering of said exhaust gases released from said endothermic engines M, supplied by said means R.

An improved method and system of carbon sequestration of a pyrolysis piston engine power system is provided. The system includes a pyrolysis piston engine for generating power and exhaust gas and a water cooling and separation unit which receives the exhaust gas and cools and removes water from the exhaust gas to create C02 gas supply. The system also includes a mixing pressure vessel which receives at least a portion of the C02 gas supply from the water cooling and separation unit and mixes the C02 gas supply with oxygen to create a working fluid to be provided to the piston engine and an oxygen generator for providing oxygen to the mixing pressure vessel. The system also includes a pyrolysis interface for inputting byproducts from a pyrolysis system, wherein the pyrolysis interface comprises a pyrolysis gas interface and a pyrolysis gas/oil interface.

An improved method and system of carbon sequestration of a pyrolysis piston engine power system is provided. The system includes a pyrolysis piston engine for generating power and exhaust gas and a water cooling and separation unit which receives the exhaust gas and cools and removes water from the exhaust gas to create C02 gas supply. The system also includes a mixing pressure vessel which receives at least a portion of the C02 gas supply from the water cooling and separation unit and mixes the C02 gas supply with oxygen to create a working fluid to be provided to the piston engine and an oxygen generator for providing oxygen to the mixing pressure vessel. The system also includes a pyrolysis interface for inputting byproducts from a pyrolysis system, wherein the pyrolysis interface comprises a pyrolysis gas interface and a pyrolysis gas/oil interface.

A fuel oxygen conversion unit includes a contactor defining a liquid fuel inlet, a stripping gas inlet and a fuel/gas mixture outlet. The fuel oxygen conversion unit also includes a fuel/gas separator defining a fuel/gas mixture inlet in flow communication with the fuel/gas mixture outlet of the contactor, an axial direction, and a radial direction. The fuel/gas separator includes a separator assembly including a core including a gas-permeable section extending along the axial direction and defining a maximum diameter, the maximum diameter of the gas-permeable section being substantially constant along the axial direction; and a stationary casing, the fuel/gas separator defining a fuel/gas chamber in fluid communication with the fuel/gas mixture inlet at a location inward of the stationary casing and outward of the gas-permeable section of the separator assembly along the radial direction.