| FOSTER WHEELER ENERGIA OY Patent applications |
| Patent application number | Title | Published |
|---|
| 20120134882 | Fluidized Bed Reactor - A fluidized bed reactor includes a bottom portion, a roof portion and side walls vertically extending between the bottom portion and the roof portion, forming a reaction chamber of the fluidized bed reactor. A solids separator is in connection with the reaction chamber. At least one side wall of the reaction chamber forms at least one indentation in the reaction chamber, which indentation is substantially vertical and extends from the plane of the side wall towards the reaction chamber. | 05-31-2012 |
| 20120079996 | Thermal Power Plant - A thermal power boiler includes a furnace enclosed by two short side walls and two long side walls, flue gas channels arranged above the furnace, a back pass and a supporting structure. The supporting structure includes a stationary bearing structure supported from below. The bearing structure includes multiple vertical pillars and a parallel main supporting beams supported by the vertical pillars, and a suspension structure, so that the furnace hangs from the bearing structure. The main supporting beams and the flue gas channels arranged above the furnace are parallel with each other and parallel with the short side walls. The main supporting beams are preferably arranged at least partially between the flue gas channels extending over the roof of the furnace. | 04-05-2012 |
| 20120067303 | Circulating Fluidized Bed Boiler - A circulating fluidized bed boiler includes a rectangular furnace which is horizontally enclosed by a front wall, a back wall and two sidewalls, and multiple particle separators connected to the upper portion of each of the front wall and the back wall. Each particle separator includes a gas outlet, and flue gas duct system connected to the gas outlets for conducting cleaned flue gas to a back pass. The particle separators are arranged in pairs of particle separators. Each pair of particle separators includes a front separator arranged adjacent to the front wall and a back separator arranged adjacent to the back wall. The flue gas duct system includes cross over ducts, each cross over duct connecting the gas outlet of a front separator of a pair of particle separators, across and over the furnace, to the gas outlet of the back separator of the same pair of particle separators, and to the back pass, which back pass is arranged on the back wall side of the furnace. | 03-22-2012 |
| 20110232544 | Oxycombustion Circulating Fluidized Bed Reactor, Method of Operating Such a Reactor and Method of Upgrading a Circulating Fluidized Bed Reactor - An oxycombustion circulating fluidized bed reactor includes a reactor chamber, and a gas distribution arrangement provided in the bottom section of the reactor chamber for introducing gas into the reactor chamber. A windbox chamber having gas introduction nozzles introduces gas from the windbox chamber into the reactor chamber and an has an inlet that opens into the windbox chamber. A first gas feeding system introduces gas into the windbox chamber, and a second gas feeding system introduces gas into the wind box chamber in the vicinity of at least one nozzle inlet. | 09-29-2011 |
| 20110000406 | Oxycombustion Circulating Fluidized Bed Reactor and Method of Operating Such a Reactor - An oxycombustion circulating fluidized bed reactor includes a reactor chamber and a gas distribution arrangement provided in a bottom section of the reactor chamber for introducing gas into the reactor chamber. The gas distributor arrangement includes a first gas feeding system and a second gas feeding system for introducing oxygen-rich gas into the reactor chamber. The first gas feeding system includes a first wind box and the second gas feeding system includes a second wind box. The first wind box has a common wall with the reactor chamber and the second wind box is arranged under the first wind box and has a common wall with the first wind box. | 01-06-2011 |
| 20100294215 | METHOD OF AND APPARATUS FOR SUPPORTING WALLS OF A POWER BOILER - A method of and an apparatus for supporting walls of the furnace of a thermal power boiler, in which the furnace is suspended to hang on a supporting plane of the upper portion of steel structures especially arranged for the purpose, and the walls, being formed of water tubes, are supported horizontally at least by buckstays positioned substantially perpendicular to the water tubes, and vertical pillars, located outside the buckstays, are attached to the ground or the foundations of the boiler building. At least two of the walls, located on opposite sides of the furnace are supported in such a way that loads directed perpendicularly to the walls are transferred by the vertical pillars to internal stresses of at least one rigid plane surrounding the boiler. | 11-25-2010 |
| 20100216621 | Centrifugal Separator Assembly - A centrifugal separator assembly including a polygonal separator chamber formed of planar wall sections joined with each other to provide a substantially gas tight structure and having at least four pairs of planar opposite wall sections. The chamber includes a tapered portion formed by having a first inward bending in each of the wall sections. The tapered portion extends as a discharge channel for separated particles from the separator chamber, which discharge channel is formed of first and second pairs of opposite wall sections being perpendicular to each other. In the discharge channel for separated particles, the first pair of wall sections extends into the area between the second pair of wall sections. | 08-26-2010 |
| 20100108340 | Impact Rapping Device - An impact rapping device includes a stationary anvil integrated with a surface to be rapped, the anvil having a hammering axis perpendicular to the surface to rapped, a hammer arranged to move coaxially with the hammering axis, to hit an impact surface of the anvil, and a device for moving the hammer. The anvil and the hammer form a compact unit, which can be assembled in any position. The hammer is supported to lean on the anvil in such a way that the position of the hammer automatically follows changes of place or position of the anvil, and so that the hammer can move only parallel to the hammering axis. | 05-06-2010 |
| 20100037805 | Method of and Apparatus for Controlling the Temperature of a Fluidized Bed Reactor - A method of and an apparatus for controlling the temperature of a fluidized bed reactor, comprising a separator for separating first solid particles from the fluidized bed reactor, a return duct for returning a first portion of the first solid particles to the fluidized bed reactor, a discharge duct for the discharge of a second portion of the first solid particles and an inlet duct for transferring second solid particles from a second fluidized bed reactor to the fluidized bed reactor, in which the return duct and the inlet duct share a common end portion for transferring a mixture of solid particles, formed of the first portion of the first solid particles and the second solid particles, to the fluidized bed reactor. The apparatus also preferably includes a fluidized mixing device for mixing the first portion of the solid particles and the second solid particles with each other. | 02-18-2010 |
| 20100024694 | Separator Construction of a Fluidized Bed Boiler - A separator construction, connectable to a fluidized bed boiler having a furnace, for circulating bed material and returning the material to the furnace. The separator construction includes walls, a ceiling, an inlet conduit, an outlet conduit in flow communication with a flue gas channel located above the separator, and a suspending device connecting the separator to a supporting structure in a building housing the boiler. The suspending device is formed of a frame arranged between the flue gas channel and the separator in connection with an upper circumference of the wall of the separator, and hanger rods or wires connecting the frame directly to the supporting structure. | 02-04-2010 |
| 20100012050 | Boiler Water Cycle of a Fluidized Bed Reactor and a Fluidized Bed Reactor - A boiler water cycle of a fluidized bed boiler, preferably, a supercritical once-through-unit (OTU) boiler, includes a drop leg, a number of horizontal inlet headers, substantially having a length of the length of a front wall of the furnace of the boiler, arranged below the furnace, and panels of water tubes of the front wall and a rear wall, extensions of the water tubes being directly connected to the inlet headers, wherein each inlet header is in flow communication with a drop leg by way of an inlet duct connected to the end of the inlet header. The inlet headers include a front wall chamber below the front wall of the furnace, a rear wall chamber arranged below the rear wall of the furnace, and at least one grid chamber below the center part of the furnace grid in a wind box of the fluidized bed boiler. | 01-21-2010 |
| 20090297993 | Method of and System For Generating Power By Oxyfuel Combustion - An oxyfuel combustion system for generating power that includes a furnace for combusting carbonaceous fuel and substantially pure oxygen to produce exhaust gas including mainly carbon dioxide and water. An exhaust gas channel system discharges the exhaust gas from the furnace. The exhaust gas channel system has an upstream channel, an outlet channel and a gas recycling channel. The upstream channel recycles a recycling portion of the exhaust gas through the recycling channel to the furnace, and conveys an end portion of the exhaust gas through the outlet channel for final processing. The upstream channel is divided between a first divider piece and a connecting piece into a first exhaust gas channel portion and a second exhaust gas channel portion. A gas-gas heat exchanger arranged in the first exhaust gas channel portion transfers heat from exhaust gas in the first exhaust gas channel portion to gas in the gas recycling channel. A first economizer arranged in the second exhaust gas channel portion transfers heat from exhaust gas in the second exhaust gas channel portion to a flow of feedwater in a feedwater line, and a second economizer arranged in the exhaust gas channel system downstream of the connecting piece transfers heat from gas in the exhaust gas channel system to the flow of feedwater in the feedwater line. | 12-03-2009 |
| 20090293818 | Fluidized Bed Heat Exchanger for a Circulating Fluidized Bed Boiler and a Circulating Fluidized Bed Boiler with a Fluidized Bed Heat Exchanger - A heat exchanger and a circulating fluidized bed boiler with a heat exchanger including a first fluidized bed heat exchange chamber and a second fluidized bed heat exchange chamber, arranged in connection with a furnace of the circulating fluidized bed boiler, a first inlet channel for introducing hot solids from a particle separator of the external circulation of the circulating fluidized bed boiler into the first heat exchange chamber, a second inlet channel for introducing solids to the second heat exchange chamber, a first discharge for removing a first portion of the cooled solids from the first heat exchange chamber to the second inlet channel and a second discharge for removing cooled solids from the second heat exchange chamber to the furnace, the heat exchange chamber including an inlet for introducing hot solids directly from the internal circulation of the furnace to the second heat exchange chamber. The heat exchanger also preferably includes a third discharge for removing a second portion of the cooled solids from the first heat exchange chamber directly to the furnace. | 12-03-2009 |
| 20090293782 | METHOD OF AND SYSTEM FOR GENERATING POWER BY OXYFUEL COMBUSTION - A method of generating power by oxyfuel combustion. Carbonaceous fuel and oxidant gas are fed into a furnace. In a first operating mode, the oxidant gas includes a stream of substantially pure oxygen conveyed from an oxygen supply for combusting the fuel with the oxygen to produce exhaust gas including mainly carbon dioxide and water. The exhaust gas is discharged from the furnace and is divided into a recycling portion and an end portion. The recycling portion is recycled to the furnace. Heat is transferred from the end portion to the stream of substantially pure oxygen by circulating a liquid heat transfer medium in a passage between an exhaust gas cooler and an oxygen heater. | 12-03-2009 |
| 20090053661 | FLUIDIZED BED BOILER PLANT AND METHOD OF COMBUSTING SULFUROUS FUEL IN A FLUIDIZED BED BOILER PLANT - A fluidized bed boiler plant and a method of combusting sulfurous fuel in the fluidized bed boiler plant, a furnace of which plant is provided with a fluidized bed of particles. Sulfurous fuel, CaCO | 02-26-2009 |
| 20080250714 | Method of and an Apparatus For Gasifying Carbonaceous Material - A method of and an apparatus for gasifying carbonaceous material, the apparatus including a gasification reactor, to which oxygen-containing primary gas and secondary gasification gas are introduced, whereby a portion of the material to be gasified is gasified to product gas, residual carbon contained in the fly ash extracted from the product gas is combusted in a cyclone combustor, and the exhaust gas from the cyclone combustor is guided to above the bottom level of the gasification reactor to act as secondary gasification gas. | 10-16-2008 |
