Matches 601 - 650 out of 719 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
4227488 Fluidized bed unit including a cooling device for bed material  
A fluidized bed combustion or gasification unit in which a grate is disposed in a housing to divide the housing into an upper chamber and a lower chamber. A bed of particulate material including...
4223529 Combined cycle power plant with pressurized fluidized bed combustor  
An improved combined cycle gas turbine and steam turbine power plant is disclosed in which the energy source for both the steam turbine portion of the system and the gas turbine portion is a...
4211186 Fluidized bed combusters  
The invention provides a fluidized bed combustion apparatus comprising in a common structure a plurality of modules, each module comprising: a diffuser bed support arranged to support and fluidize...
4204829 Catalytic combustion process and system  
A process and system of apparatus for stoichiometrically combusting fuel and air reactants. A stream of the reactants is directed through an upstream zone for combustion about cylinders comprised...
4203391 Fluidized bed fuel feeder  
An underfeed fuel feeder for introducing granular material into a fluidized bed. One embodiment introduces material into the bed through a perforated cavity-shaped feed nozzle disposed beneath an...
4196676 Fluid bed combustion method and apparatus  
A fluid bed combustion method and apparatus are disclosed utilizing an induced draft fan downstream of the exhaust port of the combustion chamber. Fluidizing air is given a velocity vector toward...
4191115 Carbonaceous fuel combustion with improved desulfurization  
Lime utilization for sulfurous oxides adsorption in fluidized combustion of carbonaceous fuels is improved by impregnation of porous lime particulates with iron oxide. The impregnation is achieved...
4184455 Fluidized bed heat exchanger utilizing angularly extending heat exchange tubes  
A fluidized bed heat exchanger in which air is passed through a bed of particulate material containing fuel disposed in a housing. A steam/water natural circulation system is provided and includes...
4184438 Fluidized bed start-up apparatus  
An apparatus for supporting and starting up a fluidized bed in which a grate is disposed in a housing for receiving a single bed of particulate material, portions of which are combustible. The...
4184456 Coal feed system for a fluidized bed combustor  
A coal feed system for use in a fluidized bed in which a grate is supported in a housing and is adapted to receive, on its upper surface, a bed of particulate material including a combustible fuel....
4183330 Fast fluidized bed steam generator  
A steam generator in which a high-velocity, combustion-supporting gas is passed through a bed of particulate material to provide a fluidized bed having a dense-phase portion and an entrained-phase...
4183308 Fluidized bed unit including an electrical air preheat apparatus  
A fluidized bed unit in which a grate is disposed in a housing to divide the housing into an upper chamber and a lower chamber. A bed of particulate material including fuel is supported by the...
4177765 Output control for fluidized bed boilers  
A fluidized bed boiler is equipped with a plurality of slidable sleeves circumscribing the vapor generator tubes disposed therein. By selectively extending or retracting the sleeves over the tubes,...
4176710 Fluidized bed reactor  
A fluidized bed reactor containing a heat exchange apparatus for conveying a heat transfer medium comprising at least one pipe which extends in a vertical direction from the top of the reaction...
4173950 Coal fired fluid bed module for a single elevation style fluid bed power plant  
A fluidized bed for the burning of pulverized fuel having a specific waterwall arrangement that comprises a structurally reinforced framework of wall tubes. The wall tubes are reversely bent from...
4167918 Fluid-bed air-supply system  
The air-supply system for a fluidized-bed furnace includes two air conduits for the same combustion zone. The conduits feed separate sets of holes in a distributor plate through which fluidizing...
4167157 Fluid-bed air-supply system  
The air-supply system for a fluidized-bed furnace includes two air conduits for the same combustion zone. The conduits feed separate sets of holes in a distributor plate through which fluidizing...
4165717 Process for burning carbonaceous materials  
Carbonaceous material, preferably coal or like finely divided solids with a mean particle diameter of 30 to 250 microns, is burned to produce steam in a fluid-bed furnace having a lower free space...
4160805 Boiler containing denitrator  
In a boiler having a plurality of heat exchanger stages such as a superheater, an evaporator and a preheater, disposed in a combustion gas channel between heat exchangers including an optimum...
4160009 Boiler apparatus containing denitrator  
A boiler apparatus having a furnace and a plurality of heat exchanger stages disposed in a channel for the combustion gas discharged from the furnace. The boiler apparatus is equipped with a...
4154581 Two-zone fluid bed combustion or gasification process  
A method of operating a fluidized bed system in a single vessel, typically as a combustor system for power or steam generation burning high-sulfur coal or as a gasifier for high-sulfur coal, which...
4154197 Packaged fluidized bed steam generator  
A fluid heating unit is provided which includes upper and lower drums, a plurality of riser tubes connected between the drum and defining an enclosure, and means defining a cell within the...
4150632 Char separator  
Particulates removed from the flue gases produced in a fluidized-bed furnace are separated into high-and low-density portions. The low-density portion is predominantly char, and it is returned to...
4136642 Method of and apparatus for regulating steam and hot water boilers employing fluidized fuel  
The heating power of the fire box of a boiler burning powdered fuel maintained in suspension by fluidizing air is regulated in dependence on the temperature of the burning fluidized fuel layer by...
4132005 Fluidization of permanently magnetic particle beds  
A process for the stabilization of a fluidized bed against bubble formation which process comprises a vessel, a plurality of permanently magnetized particles dispersed throughout the bed, and means...
4130071 Fluidized-bed combustor  
A coal-dolomite mixture is ground into particle-sized bits and fed into a downward sloping duct beneath the distributor plate in a fluidized-bed combustor. High velocity air is introduced through...
4129098 Fluidized beds  
This invention relates to fluidized bed furnaces. There is an increasing interest in furnaces in which the fuel is burned in a bed that is maintained in a fluent condition by combustion air...
4124068 Heat exchange tube for fluidized bed reactor  
Liquid containing heat transfer tube for use in a fluidized bed reactor is protected against erosive effects of the fluidized medium by having radially outwardly extending fins on its outer surface...
4116005 Combined cycle power plant with atmospheric fluidized bed combustor  
A combined cycle steam and gas power plant is disclosed in which energy for generating steam to drive a steam turbine and for heating air to drive a gas turbine is provided by combustion of a...
4111158 Method of and apparatus for carrying out an exothermic process  
A method of and apparatus for carrying out an exothermic process in which a combustible-containing solid (e.g. coal shale, pyrite or limestone in combination with fuel oil) are burned in a...
4103646 Apparatus and method for combusting carbonaceous fuels employing in tandem a fast bed boiler and a slow boiler  
A fluid bed boiler and combustion method are provided having a first fast bed combustion zone followed by a second slow bed combustion zone. Coal, as a typical fuel, and limestone are fed to the...
4101281 Radial-flow reactor for the synthesis of ammonia with production of high thermal-level steam  
In an ammonia synthesis column, the combination of a tube bundle heat exchanger and a boiler with two superposedly arranged catalyst beds permits to recover considerable amounts of reaction heat,...
4096909 Fluidized bed process heater  
A fluidized bed process heater with a reaction chamber of toroidal configuration is provided with radially-oriented bed coils in the reaction chamber in which steam is generated or other process...
4089303 Boiler or vapor generator using catalytic combustion of hydrocarbons  
A boiler or vapor generator using catalytic combustion of hydrocarbons to evaporate a fluid passed through pipes operates in accordance with the principles of U.S. Pat. Nos. 3,908,602 and 3,952,707...
4086758 Combined steam and gas turbine plant and method of operation  
Steam and gas turbines share a common heat source according to the invention. A fluidized bed combustion chamber provides hot gas for the gas turbine and a heat source for a gaseous heat exchange...
4085707 Combustion or part-combustion in fluidized beds  
In the partial or full combustion of fuels in a fluidized bed, the provision of heat transfer surfaces within the bed impedes particle circulation resulting in localized regions of relative intense...
4085593 Steam power plant with fluidized bed heat source for superheater and method of producing superheated steam  
A steam power plant is disclosed in which superheaters for the various turbine stages include heat exchange coils located in the bed portion of high temperature fluidized beds. Improved heat...
4084545 Operating method  
A method of operating a fluidized bed system, typically as a combustor system for power or steam generation by burning high-sulfur coal, which comprises forming an entrained fluidized bed in a...
4072130 Apparatus and method for generating steam  
Steam is generated in a controlled manner as a function of the steam demand by way of a combustor adapted to burn a fuel such as high sulfur coal in a fluidized bed. The steam demand and the steam...
4039621 Power generation wherein sulfur and nitrogen oxides are removed  
A sulfur bearing carbonaceous fuel, particularly a low BTU gaseous fuel, is burned in a deficiency of air in the combustion zone of a boiler to form a reducing gas containing H 2 and CO in an...
4009121 Method of temperature control in catalyst regeneration  
Steam coils having two different pressure levels are provided in a bed of carbon-contaminated catalyst undergoing regeneration by combustion with an oxygen-containing gas to control the temperature.
3996863 Rapid ignition of fluidized bed boiler  
A fluidized bed boiler is started up by directing into the static bed of inert and carbonaceous granules a downwardly angled burner so that the hot gases cause spouting. Air is introduced into the...
3996099 Low temperature steam generator  
The low-temperature steam generator consists of a single enclosure containing a molten-salt reactor and a fluidized-bed exchanger located above the reactor core and inserted in the molten-salt...
3991816 Method of exchanging heat and heat exchanger  
A method and apparatus for exchanging heat between a moving fluid and a moving secondary fluid comprising passing a plurality of streams of secondary fluid upward through the moving primary fluid.
3983931 Method and apparatus for transferring heat to or from material  
Method and apparatus for transferring heat to or from a substance, transfer being effected from or to a fluidized bed which floatingly supports a vessel containing the substance.
3983927 Heat exchanger for fluidized bed reactor  
A fluidized bed reactor is provided with vertically oriented heat exchange coils for controlling the temperature of the fluidized bed. Tuyere elements discharge fluidizing gas at a level...
3982901 Heat transfer element and tuyere for fluidized bed reactor  
A fluidized bed reactor is provided with heat exchange coils for controllng the temperature of the fluidized bed. The heat exchange coils are vertically oriented and elements thereof pass through...
3966431 Waste stone oxidation and recarbonization  
The disclosed process provides for the production of a desulfurized fuel gas from a sulfur-containing fuel oil by absorption, in a first reaction zone, of the sulfur contaminants with a calcium...
3955556 Catalytic fluid heater  
A catalytic fluid heater formed of a number of nested fluid heating chambers spaced from one another to provide therebetween a heating zone having a chimney effect such that a mixture of fuel gas...
3952707 Hot-fluid generator using catalytic combustion  
A hot-fluid generator, e.g. for heating water or producing steam, which comprises at least two vertical spaced-apart catalyst elements for the combustion of a hydrocarbon fuel to generate heat, a...
Matches 601 - 650 out of 719 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >