Abstract: In a method of reprocessing sewage sludge in which the sludge is dried before it is burnt, it is proposed to use steam from the water-steam circuit of a fossil-fueled power station process as the heating medium for drying and to take the vapors arising during drying into a fire chamber downstream of the power station furnace to reduce nitrogen oxides. The dried sewage sludge is preferably burnt together with coal in the power station furnace.

Abstract: A partial flue gas stream is used for the production of electrical energy and/or heating and operational heat by utilizing combustion heat from fossil fuels, prior to combustion dried in an indirectly heated fluidized bed dryer, with combustion flue gas used as a carrier medium for the fluidized bed dryer. The mixture of flue gases and steam, deriving from the drying process, is after an intermediate treatment, if necessary, discharged with the main flue gas stream.

Abstract: In a process for reducing the nitric oxide emission during the combustion of solid fuels, the flue gases leaving from a main combustion zone (2) consecutively flow through two reduction zones (6,9). The first reduction zone (6) is operated hypostoichiometrically at temperatures above 1,000.degree. C. and while adding a reducing fuel, while the second reduction zone (9) is operated hyperstoichiometrically at temperatures from 950.degree. C. to 1,000.degree. C. and in the presence of nitric oxide-reducing substances.

Abstract: In a process to reduce the nitrogen monoxide emissions generated during the combustion of solid fuels, before the combustion takes place, the entire amount of solid fuel is degasified inside a performance combustion area (2). At least part of the gas obtained during the degasification of the solid fuel is utilized as reduction gas in one or several reduction areas (3) that have been placed following the performance combustion area (2). In an installation for the implementation of the process the degasification device for solid fuel has been configured as a degasification section (5) for the continuous passage of fuel and has been arranged inside the combustion unit (1), within the flue gas current.

Abstract: In a method for reducing the start-up and stabilization period losses, for increasing the usable power and to improve the controllability of a thermal power plant, there are integrated into the power plant's steam cycle pressurized heat storage reservoirs which are charged by feeding them with excess heat produced in the said power plant as, for example, during the start-up and load stabilizing periods or during periods of reduced electrical power production and, when there is an increased demand for heat, the said heat storage reservoirs are discharged by the release of stored heat into the water-steam cycle. Control deviations in the electrical power while the power plant is in full operation are counterbalanced by changes in the charging and discharging streams of the pressurized heat storage reservoirs.

Abstract: Methods by which remote heating circuits are supplied with heat from a thermal power plant by using heat reservoirs located close to the power plant and heating the storage or working medium in a heat exchanger of a heat extraction cycle. The medium is initially heated to a base temperature, for example, when using water, to approximately 95.degree. C., and is further heated immediately prior to being directed into a remote heating circuit to a temperature above 100.degree. C. This two stage heating allows the use of unpressurized heat reservoirs. Additionally, the temperature of the medium is efficiently raised to a level sufficiently to operate the remote heating circuit. Preferably, the medium can further be removed from the reservoirs and heated in a second pass through the heat extraction heat exchanger.

Abstract: A part of a solid fuel is combusted in a fluidized bed combustor; a remainder of the fuel is combusted in a dust combustor. Waste gases from the fluidized bed are fed to the dust combustor. A heat exchanger in the fluidized bed heats compressed air in which fuel is combusted to drive a hot gas turbine. A heat exchange in the dust combustor heats water to superheated steam to drive a steam turbine.