Abstract: A combination gas-turbine and steam-turbine process and a power plant that utilizes the process. A waste-heat recovery system with a steam-circulation system is downstream and a pressurized furnace with a combustion chamber is upstream of a gas turbine. Flue surfaces that heat air are accommodated in the furnace. A pressurized gasifier parallels the furnace. Flue gas from the furnace, preheated combustion air, and combustion gas from the gasifier are forwarded to the combustion chamber. The heat of combustion liberated in the furnace by heating the flue gas to beyond its combustion temperature is transmitted exclusively to the combustion air being forwarded to the combustion chamber.

Abstract: A device for transferring solid particles from an area of higher pressure to one of lower pressure. A stack-up section (3) between the areas is full of particles and large enough to reduce the current of gas flowing through the open stack-up section from the area of higher pressure as a result of the pressure loss that occurs in the stack-up section to a level that prevents pneumatic conveyance of the particles. A conveyor is in or at the end of the stack-up section.

Abstract: An apparatus for removing dust from hot gas under pressure comprises a housing for filter units disposed in cascade between an upper inlet and a dust funnel at a lower part of the housing. Each filter unit comprises a grate array of collecting ducts to which rigid filter candles of porous ceramic tubes are connected. Clean-gas pipes communicate with the ducts and extend within the housing to a clean-gas chamber at which they open through nozzles juxtaposed with drive gas pipes capable of propelling gas through the clean-gas pipes for dislodging deposits of the filter candles.

Abstract: A device for filtering hot, dust-laden gases with filter tubes (2) accommodated in a closed housing (1) that contains both a dirty-gas section and a clean-gas section and consisting of hollow structures (9) that have at least one exit that communicates with the clean-gas section and are otherwise closed, characterized in that the edge (11) around the exit from each tube constitutes a base and rests subject to the weight of the tube against a counterpart in the clean-gas section such that the weight of the tube and the difference between the pressure of the gas in the dirty-gas section and that of the gas in the clean-gas section act parallel.

Abstract: A furnace, especially a fluidized furnace with a combustion chamber (1) that gas flows up through and that has a gas outlet provided with a second flue (2) and a precipitator (10) for separating solids from the flue gas. The solids end of the precipitator communicates with the second flue, which accommodates a layer (12) of solid matter. The bottom of the second flue communicates by way of a solids-reintroduction line (14) with the combustion chamber. The second flue is a solids cooler and the precipitator is also a filter.

Abstract: A device for varying the height of a bed in a fluidized combustion chamber inside a pressurized housing. Bed material is supplied to the chamber from hoppers or returned back to the hoppers from the chamber through a supply line. The supply line connects the chamber and the hoppers. The hoppers have means of increasing or decreasing the pressure. To improve the means of both increasing and decreasing pressure in the known device and of cleaning the gas that enters into contact with the material in the hopper, each hopper contains a hot-gas filter that gas can flow through in two directions and each hopper communicates above the filter with a gas connection that can be maintained at either a higher or a lower pressure than the fluidized combustion chamber.

Abstract: Cyclones are arranged within a pressure vessel and are connected, at the gas entry side, with a furnace by way of a feed pipe standing under pressure and a distributor duct. The cyclones are connected, at the gas exit side, to a collecting duct and a discharge pipe. The feed pipe and the discharge pipe are surrounded by an outer pipe with the formation of an annular space. The annular spaces have a connection to the interior space of the pressure vessel, and are connected with a compressor.

Abstract: The flue gases, which are generated in a combustion chamber through combustion of solid fuels, particularly under increased pressure, are cleared of dust in a dust removal device which consists of a plurality of tubular ceramic filter elements open at one side. These filter elements are suspended in a plate, which represents the ceiling of the combustion chamber.