Abstract: Various embodiments of a waste heat recovery and conversion system are disclosed. The system may include a modular heat exchanger whose energy source is provided by waste heat energy transporting fluids transferring their energy to a working fluid. The working fluid may be in a liquid state contained in a reservoir hydraulically connected to a high-pressure heat transfer chamber. The high-pressure heat transfer chamber may be configured to receive thermal energy utilized to convert the working fluid into a superheated vapor.
Abstract: Substantially pure high pressure steam is produced within a high pressure heat exchanger. Heat for the high pressure heat exchanger is provided from an outlet of an oxy-fuel combustion gas generator which discharges a steam/CO2 mixture at high pressure and temperature. The gas generator combusts oxygen and hydrocarbon fuel and mixes with water which can include contaminates therein in the form of dissolved solids or hydrocarbons. A separator is typically provided downstream of the gas generator and upstream of the heat exchanger and the steam/CO2 mixture is discharged from the gas generator at saturation temperature. A water fraction of the steam/CO2 mixture is discharged from the separator along with dissolved solids in concentrated brine form. The water heated into steam by the heat exchanger can be at least partially water separated within a condenser downstream of the heat exchanger.
October 8, 2013
May 22, 2014
Clean Energy Systems, Inc.
Keith L. Pronske, Roger A. Anderson, Bradley J. Anderson, Daniel A. Greisen
Abstract: In a burner for highly caking coal in which a solid fuel channel and a gasifying agent channel are provided in a double pipe structure, the temperature increase of the particles of a highly caking solid fuel and the resulting fusion and expansion of the particles are prevented or suppressed, thereby enabling a stable operation of the gasifier. In a burner for highly caking coal in which a solid fuel channel that is attached for gasifying a highly caking solid fuel that has been pulverized into particles and that supplies the solid fuel into the gasifier, and a gasifying agent channel that supplies a gasifying agent into the gasifier are provided in a double pipe structure, the burner has a triple pipe structure including a cooling water channel that circulates cooling water between the solid fuel channel and the gasifying agent channel, and the cooling water is recovered after use.
Abstract: A process for combusting solid liquid or gaseous fuels in a high temperature refractory-lined reactor with the aim of generating electric power comprises mixing at least one fuel with steam. The refactory material of the reactor and the opaque gases of the reaction environment bring about high power infrared radiation which substantially instantaneously preheats the reactants on input including said reactants being intrinsically transparent to infrared radiation (N2/O2) but rendered opaque and thus absorbers of energy from infrared radiation thanks to dilution with steam. A high efficiency combustor is provided for carrying out the above-stated process.
Abstract: A method and apparatus for direct contact steam generation for a variety of industrial processes including heavy oil recovery, power generation and pulp and paper applications. The steam generation system consists of a combustor (10) and a steam generator (70) and is constructed to be operable at elevated pressures. The fuel, at least one oxidant and a fluid supply including water are supplied at pressure to the combustor. Flue gas from the combustor (10) is delivered to the direct contact steam generator (70) at pressure, and upon direct contact with water, produces a flue gas stream consisting primarily of steam. This product stream can then be cleansed and used for industrial applications. The combustor (10) can be operated with low grade fuel and low quality water with high solids and hydrocarbon contents. The apparatus and method reduce the environmental footprint by reducing air emission, concentrating CO2 to enable capture and reducing clean water requirements.
Abstract: Disclosed is a combustor including a baffle plate having at least one through baffle hole and at least one fuel nozzle extending through the at least one baffle hole. At least one shroud is secured to the baffle plate and includes at least one piston ring disposed at the shroud. The at least one piston ring is configured to meter a flow of diluent between the at least one shroud and the at least one fuel nozzle. Further disclosed is a method for providing diluent to a combustor including providing a piston ring gap defined by at least one piston ring disposed at a baffle plate and a fuel nozzle extending through a through hole in the baffle plate. The diluent is flowed through the piston ring gap toward at least one airflow hole in the fuel nozzle.
October 14, 2008
April 15, 2010
GENERAL ELECTRIC COMPANY
Jesse Ellis Barton, Jonathan Dwight Berry, Mark Allan Hadley, Glenn David Nelson, Robert Joseph Rohrssen, John Drake Vanselow
Abstract: The present invention provides a highly reliable pulverized coal boiler that ensures suppression of a rise in flame temperature caused during the combustion of an unburnt gas in a furnace when combustion air is supplied from after-air ports so as to reduce the concentration of thermal NOx generated during the combustion.
Abstract: A reaction furnace utilizing high-temp steam and recirculated heat source to separate mercury and crack dioxin and organic substances contained in waste includes a first combustion chamber having a burner for producing high-temp hot gas, which is sent to a second combustion chamber for heating a reaction chamber and a high-temp steam generator therein. High-temp steam produced by the high-temp steam generator is introduced into the reaction chamber for decomposing or distilling waste being treated. Gas mixture produced in the reaction chamber is discharged to a gas mixture treatment system for separation. Fuel gas and fuel oil separated from the gas mixture are introduced into the burner for producing the high-temp hot gas, and waste water separated form the gas mixture is led to the high-temp steam generator for producing the high-temp steam. And, soil in the waste that has been treated is discharged via a discharge outlet.
Abstract: An incinerator (10) comprising a combustion chamber (11) and a plurality of combustion-promoting fluid blast pipes (19) disposed so as to project from one location on the inner wall (12) of the combustion chamber, extend in that vertical direction and exit to the exterior from another location, wherein the combustion-promoting fluid blast pipes (19) are of a triple-pipe construction, composed of an air-supply pipe (20a), a steam/gas-supply pipe 20b provided outside thereof which supplies steam or combustible gas, and a water pipe which is provided further outside thereof, and nozzles (21), which are formed on these combustion-promoting fluid blast pipes (19), are formed in a position facing in one circumferential direction of the combustion chamber (11) so that a combustion-promoting fluid blown out from these nozzles forms a swirling flow within the combustion chamber (11).
Abstract: The method of carbonization of organic waste according to the present invention comprises the steps of supplying organic waste to a dryer, reducing an amount of water in the organic waste by heating with high-temperature gas, supplying the organic waste to a carbonization furnace for carbonizing the organic waste in a high-temperature ambience, removing carbide from the carbonization furnace, incinerating gas, which is generated in the carbonization furnace, in a re-incinerating furnace, and supplying combustion gas of the re-incinerating furnace to the dryer as the high-temperature gas.
Abstract: A method and portable apparatus is described for the conversion of cellulose and other blomass waste materials through a pyrolysis and partial combustion sequence in a downdraft gasifier to produce a gas which can be immediately utilized to fuel an internal combustion engine in a generator set (genset). More specifically, the heat from the combustion of part of the cellulosic or other waste input is used to pyrolyze the remainder of the input to produce a mixture of permanent fuel gases. Particulates are removed (water scrubbers, filters) from the gas mixture which can then be used directly as a major part of the fuel to operate the internal combustion engine in the genset. All movement into, through, and out of the gasifier and purification train is controlled by the vacuum associated with the intake of the internal combustion engine, thereby ensuring a steady production of electricity.
October 18, 2001
Date of Patent:
September 9, 2003
Malahat Systems Corporation
Richard Sunter, Jake Neufeld, David Wiles
Abstract: A method and configuration suited to feeding a water-containing fuel such as peat or brown coal into a pressurized space such as a pressurized dryer or a high-pressure gasifier. A fuel with a high moisture content requires drying in a dryer prior to gasification or combustion. In the dryer, the fuel is dewatered, whereby the separated water is discharged as steam from the dryer. The generated steam is separated from the fuel flow exiting the dryer and it can be routed as injection steam to a gas turbine. When a portion of the steam extracted from the fuel flow exiting the dryer is fed into the fuel entering the dryer or to a heat exchanger, which is employed for heating the fuel flow, a fuel of higher moisture content can be fed into the dryer, or alternatively, the moisture content of the fuel can be increased to improve the feed of the fuel. The method imparts no reduction of the economy of the energy generation process.
Abstract: A garbage to hydrocarbon fuel conversion system is provided which generates electricity and hydrocarbon gases from combustible garbage. The garbage is pulverized and then burned in a destructive distillation process. The heat produced is used to generate electrical power. Dust precipitated by an electrostatic cottrell precipitator is mixed with light oil and burned in an oil burner. The heat obtained is used to maintain the destructive distillation. The gases which rise to the top of the precipitator are passed through a hydroxide solution which leaves a layer of tar and oil floating on top of the solution and a volume of hydrocarbon gases on top of this layer.
Abstract: This process is for devolatilizing coal to produce a volatile hydrocarbon gas leaving a residue of unburned coal. The volatile hydrocarbon gas and other coal or said residual coal are thereafter burned together in a common furnace. The volatilization of the coal may be carried out substantially endothermically, and preferably on the plant site where the burning of the volatilized hydrocarbon takes place together with other coal or the residue coal. The volatile matter is removed from the coal in a volatile state before the residue coal exits from the burner nozzle and then enters the combustion chamber where the volatilized hydrocarbon gas and residue coal are burned together. The removed volatilized hydrocarbon gas can be placed within the same coal burning plant to join with the unburned residual coal, passing to the burner to burn therewith.