Class / Patent application number | Description | Number of patent applications / Date published |
122004000 | MISCELLANEOUS | 22 |
20080216773 | Home appliance system using high temperature fuel cell system and method of supplying super heated steam - The home appliance system includes a high temperature fuel cell system in which fuel is reacted with oxygen to generate electricity and super heated steam, a steam path through which the super heated steam is transferred, and a home appliance connected to the steam path to use the super heated steam. | 09-11-2008 |
20080251037 | STEAM GENERATOR ARRANGEMENT - A method and apparatus effectively bypasses flue gas through or around selected boiler convection heat transfer tube banks within a new or existing boiler flue. Heat transfer tubes are removed, or omitted in the design of a new boiler flue, forming one or more voids at one or more locations within the tube banks. A bypass flue or conduit is formed within each void, for example using steel plates, along with existing flue walls, or using an integral sleeve. A wall of the bypass flue may include water or steam-cooled tubes. Dampers may be installed at either end of or within the bypass flue to control the amount of flue gas directed through each bypass flue. | 10-16-2008 |
20090044766 | Method for disassembling a boiler - A method for disassembling a boiler supported on a supporting structure is disclosed. The method includes a holder installation step for providing a vertically extendable ascent-descent holder below the boiler; a holder lifting step for increasing a height of the ascent-descent holder to a position close to or in contact with a lower end of the boiler; a cutting step for cutting off a lower part of the boiler, the lower part extending from the lower end of the boiler to a predetermined height; and a removal step for removing the lower part from the holder, after the lower part being cut off and the weight of the lower part being transferred to the ascent-descent holder; the holder installation step, the holder lifting step, the cutting step, and the removal step are repeatedly carried out for successively disassembling the boiler from a bottom side thereof. | 02-19-2009 |
20090173294 | Gas and electric heating system - The gas and electric heating system has combination gas and electric heat generators to provide energy to a steam-generating boiler. The system has a blue-flame, gaseous-fuel burner disposed externally to provide heat to a steam-generating boiler and electrical heating elements that are positioned inside the boiler. Steam generated in the boiler flows to a heating core. The core is positioned in an air duct. Heat is transferred from the core to air flowing through the duct. The heated air flows from the duct into an area to be heated. Controls are provided to correlate the functions of the various components in the system. | 07-09-2009 |
20110253068 | User-Powered Water Heater - Water heaters are described that are user-powered, such that external sources of power are unnecessary. The water heaters include a heating device and a generator coupled to a crank such that power is generated as the crank is rotated, which can be used to power the heating device. | 10-20-2011 |
20130032100 | NUCLEAR STEAM GENERATOR STEAM NOZZLE FLOW RESTRICTOR - A steam nozzle flow restrictor for a steam generator that restricts steam exit flow during a steam line break, but has a low pressure drop during normal operation. The flow restrictor has a support web suspended from the steam outlet nozzle with the web having a central opening concentric with the central axis of the nozzle. A shaft is slidably supported within the central opening of the web and has an orifice plate that is suspended within the steam generator at one end of the shaft, spaced from the steam nozzle. The orifice plate closes against the underside of the nozzle upon encountering increased steam exit flow as a result of a steam line break. | 02-07-2013 |
20130180473 | TACTILE FEEDBACK TECHNIQUES TO LIMIT TEMPERATURE RUNAWAY IN BOILER SYSTEMS - Some aspects of the present disclosure relate to a sensor probe kit that has an electrical connection that ensures a sensor probe has been properly positioned in a boiler well. In some embodiments, the sensor probe kit has a seating mechanism that positively positions a sensor probe at a predetermined position within a boiler well. In many instances, the seating mechanism provides tactile feedback to an installer when the sensor probe is properly positioned within the boiler well. These features can help ensure the sensor probe is properly installed, and helps keep the sensor probe electrically connected to the well at all times after installation. | 07-18-2013 |
20090031967 | INTEGRAL WATERWALL EXTERNAL HEAT EXCHANGERS - A combustion system having a combustor that includes tubing for carrying boiler water, a cyclone to recover solids from exhaust of the combustor and an external heat exchanger to recover heat from the solids, includes: a bypass for providing boiler water from the combustor to tube bundles of the external heat exchanger and a boiler water return for providing boiler water from the tube bundles to waterwall tubing of the combustor. A method and an external heat exchanger are also provided. | 02-05-2009 |
20090120384 | LOW BED PRESSURE DROP CIRCULATING FLUIDIZED BED BOILER AND COMBUSTION PROCESS - A method, system and apparatus for a low bed pressure drop circulating fluidized bed (CFB) boiler associated with fast bed CFB combustion are disclosed. The CFB boiler may be operated according to the following set of conditions. In an upper area of a combustor of the boiler, a flow pattern of the two-phase gas-solid flow may be placed in a fast bed fluidization state. The combustor temperature may be within a range of 850° C.-930° C. The fluidizing air velocity may be within 4 m/s and 6.2 m/s. An average size of a bed material in the combustor may be smaller than 300 μm. The gas-solid flow above of the secondary air inlet in the combustor may be kept in the fast bed fluidization state while maintaining a solid concentration of between 1 kg/m3 to 5 kg/m3. An inventory of bed material per unit area and/or the pressure drop in the combustor may be less than 8 kPa. | 05-14-2009 |
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 |
20090314226 | CIRCULATING FLUIDIZED BED BOILER AND METHOD OF OPERATION - A circulating fluidized bed boiler having improved reactant utilization. The circulating fluidized bed boiler includes a circulating fluidized bed having a dense bed portion and a lower furnace portion above the dense bed portion. At least one secondary air and recirculated flue gas injection device is downstream of the circulating fluidized bed for providing mixing of the reactant and the flue gas in the furnace above the dense bed. The present invention also includes methods of operating a fluidized bed boiler. | 12-24-2009 |
20100175637 | CATALYTIC HEATER - A catalytic heating system comprising a main catalyst ( | 07-15-2010 |
20110073049 | IN-BED SOLIDS CONTROL VALVE - A circulating fluidized bed (CFB) boiler comprising a reaction chamber. A bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. At least one non-mechanical valve, which includes an opening between the CFB and BFB and independently controlled fluidizing means located both upstream and downstream of the opening, is used to control the heat transfer to the IBHX by controlling the solids discharge from the BFB to the CFB. The elevation of the bottom of the opening is at or above the elevation of the fluidizing means. A flow control barrier may be located downstream of the opening. | 03-31-2011 |
20110073050 | CIRCULATING FLUIDIZED BED (CFB) WITH IN-FURNACE SECONDARY AIR NOZZLES - A circulating fluidized bed (CFB) boiler includes a reaction chamber, where a bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. A plurality of in-bed secondary air nozzles comprise a plurality of tubes which are grouped together and run across the width of the BFB between the BFB enclosure wall and an outside wall of the CFB. The nozzles are positioned to prevent the deflection of solids falling onto the BFB from the CFB by the secondary air jets while avoiding a complicated structure that would interfere with gas and/or solids movement in the furnace. The nozzles' exit openings are flush, or almost flush, with the BFB enclosure wall. | 03-31-2011 |
20110073051 | Oxyfuel Combustion Boiler Plant and Operation Method of Oxyfuel Combustion Boiler Plant - An oxyfuel combustion boiler plant comprising:
| 03-31-2011 |
20110180023 | Burner for the Combustion of Hydrogen on a Catalyst and Boiler for said Burners | 07-28-2011 |
20110226195 | Wall Construction for a Boiler Arrangement - A wall construction for a boiler arrangement. The boiler arrangement is formed of at least a furnace and a separator. The furnace has a grid, a bottom part, and an upper part. The separator is arranged by conduits in flow communication with both the upper part and the bottom part of the furnace. The conduits, together with the separator, form an external circulation of bed material. The upper part of the furnace has four vertical walls, and the bottom part of the furnace has a height and four walls extending from the grid up to the vertical walls. The wall construction includes at least one hollow beam being attached to a wall of the bottom part of the furnace and extending substantially over the entire height of the bottom part, and the at least one hollow beam being in flow communication with the external circulation for returning bed material into the furnace. | 09-22-2011 |
20120186541 | METHOD OF REDUCING FLUE GAS EMISSIONS AND A BOILER - The present invention relates to a method and a boiler for decreasing the amount of nitrogen oxides in flue gases of a boiler, which flue gases are generated in the combustion of fuels and air. The boiler has a water circulation system comprising superheaters ( | 07-26-2012 |
20120240870 | CIRCULATING FLUIDIZED BED BOILER WITH GAS-SOLID SEPARATOR - A gas-solid separator for a boiler includes a film divider defining first and second flue channels, an expanded cornering channel, a sealed collecting chamber, flue inlet and outlet provided at a front upper portion and a rear upper portion of the separator respectively, an even flow distributing tube set, and wear resistant connecting duct at the cornering channel, the upper and bottom portions of the even flow distributing tube set linked to the film bottom transverse tube collecting box and the collecting chamber transverse tube collecting box respectively, the upper and bottom portions of the wear resistant connecting duct linked to the film bottom transverse tube collecting box and the connecting duct transverse tube collecting box respectively. The boiler with low/medium circulating rate uses single stage inertial gravity separation. The boiler with high circulating rate uses a low temperature cyclone separator with the present invention when the flow rate at the second flue channel is relatively high. | 09-27-2012 |
20130284119 | CIRCULATING FLUIDIZED BED BOILER - A circulating fluidized bed boiler is disclosed. The circulating fluidized bed boiler comprising: a furnace defined and enclosed by water walls, a ceiling and an air distributor, the water walls comprising front and rear walls and left and right side walls (AJ, TK) formed by water cooling tubes, and the water walls are provided with secondary air ports (Y) in the lower part thereof, and furnace flue gas outlets (AB, EF, IJ, KL, OP, ST) being provided in an upper part of the furnace; at least two cyclones connected with the furnace flue gas outlets (AB, EF, IJ, KL, OP, ST); a loop-seal is connected with solid outlets of the cyclones and the lower part of the furnace, respectively; and a flue gas duct connected with flue gas outlets of the cyclones wherein the water cooling wall tubes of the water wall form at least one vertical columnar recessed segment (BCDE, FGHI, SRQP, ONML) recessed toward the inside of the furnace, and the at least one columnar recessed segment (BCDE, FGHI, SRQP, ONML) extends at least 15% of the furnace height in a vertical direction. | 10-31-2013 |
20130284120 | Circulating Fluidized Bed Boiler Having Two External Heat Exchangers for Hot Solids Flow - A circulating fluidized bed boiler including a furnace for combusting solid carbonaceous fuel in a fast fluidized bed, the furnace having walls made of water/steam tube panels and used for evaporating water fed therein. A solids separator arranged adjacent to a sidewall of the furnace separates solids entrained with exhaust gas discharged via an outlet channel from an upper portion of the furnace. A gas seal conveys at least a portion of the separated solids to a first fluidized bed heat exchange changer arranged downstream of the gas seal and has internal heat exchange surfaces. A first lift channel has a lower end connected to a bottom portion of the first fluidized bed heat exchanger chamber and an upper end connected to an upper end of a first return channel for discharging solids from the first fluidized bed heat exchange chamber and for taking the cooled solids to a lower portion of the furnace. A second fluidized bed heat exchange chamber is arranged adjacent to a lower sidewall of the furnace and has internal heat exchange surfaces, an inlet channel arranged between the second fluidized bed heat exchange chamber and the furnace for introducing hot solids from the furnace to the second heat exchange chamber, a second lilt channel having a lower end connected to a bottom portion of the second fluidized bed heat exchange chamber and an upper end connected to discharge the solids to the lower portion of the furnace. The first fluidized bed heat exchanger chamber is positioned above the second. | 10-31-2013 |
20100043729 | ATMOSPHERIC ELECTRON PARTICLE BEAM GENERATOR - Provided is an atmospheric electron particle beam nozzle, with a nozzle body having a lumen disposed therethrough; an electrode that is disposed within the lumen, optionally concentrically with the nozzle body, to define an output chamber within the lumen that encompasses the electrode. Also provided is an atmospheric electron particle beam system that provides: a nozzle, that supplies a nozzle body having a lumen disposed therethrough; an electrode disposed within the lumen, optionally concentrically with the nozzle body, to define an output chamber; an RF generator that is in communication with a transformer having a number of turns and connected to a vacuum variable capacitor, and connected electrically to the electrode; and a fluid source that supplies the nozzle with a fluid. Also herein is a method of projecting an electron beam, by projecting an electron charged fluid sheath over a distance, and projecting the electron beam within the sheath. | 02-25-2010 |
122004000 | Electric boiler | 1 |
20080216773 | Home appliance system using high temperature fuel cell system and method of supplying super heated steam - The home appliance system includes a high temperature fuel cell system in which fuel is reacted with oxygen to generate electricity and super heated steam, a steam path through which the super heated steam is transferred, and a home appliance connected to the steam path to use the super heated steam. | 09-11-2008 |
20080251037 | STEAM GENERATOR ARRANGEMENT - A method and apparatus effectively bypasses flue gas through or around selected boiler convection heat transfer tube banks within a new or existing boiler flue. Heat transfer tubes are removed, or omitted in the design of a new boiler flue, forming one or more voids at one or more locations within the tube banks. A bypass flue or conduit is formed within each void, for example using steel plates, along with existing flue walls, or using an integral sleeve. A wall of the bypass flue may include water or steam-cooled tubes. Dampers may be installed at either end of or within the bypass flue to control the amount of flue gas directed through each bypass flue. | 10-16-2008 |
20090044766 | Method for disassembling a boiler - A method for disassembling a boiler supported on a supporting structure is disclosed. The method includes a holder installation step for providing a vertically extendable ascent-descent holder below the boiler; a holder lifting step for increasing a height of the ascent-descent holder to a position close to or in contact with a lower end of the boiler; a cutting step for cutting off a lower part of the boiler, the lower part extending from the lower end of the boiler to a predetermined height; and a removal step for removing the lower part from the holder, after the lower part being cut off and the weight of the lower part being transferred to the ascent-descent holder; the holder installation step, the holder lifting step, the cutting step, and the removal step are repeatedly carried out for successively disassembling the boiler from a bottom side thereof. | 02-19-2009 |
20090173294 | Gas and electric heating system - The gas and electric heating system has combination gas and electric heat generators to provide energy to a steam-generating boiler. The system has a blue-flame, gaseous-fuel burner disposed externally to provide heat to a steam-generating boiler and electrical heating elements that are positioned inside the boiler. Steam generated in the boiler flows to a heating core. The core is positioned in an air duct. Heat is transferred from the core to air flowing through the duct. The heated air flows from the duct into an area to be heated. Controls are provided to correlate the functions of the various components in the system. | 07-09-2009 |
20110253068 | User-Powered Water Heater - Water heaters are described that are user-powered, such that external sources of power are unnecessary. The water heaters include a heating device and a generator coupled to a crank such that power is generated as the crank is rotated, which can be used to power the heating device. | 10-20-2011 |
20130032100 | NUCLEAR STEAM GENERATOR STEAM NOZZLE FLOW RESTRICTOR - A steam nozzle flow restrictor for a steam generator that restricts steam exit flow during a steam line break, but has a low pressure drop during normal operation. The flow restrictor has a support web suspended from the steam outlet nozzle with the web having a central opening concentric with the central axis of the nozzle. A shaft is slidably supported within the central opening of the web and has an orifice plate that is suspended within the steam generator at one end of the shaft, spaced from the steam nozzle. The orifice plate closes against the underside of the nozzle upon encountering increased steam exit flow as a result of a steam line break. | 02-07-2013 |
20130180473 | TACTILE FEEDBACK TECHNIQUES TO LIMIT TEMPERATURE RUNAWAY IN BOILER SYSTEMS - Some aspects of the present disclosure relate to a sensor probe kit that has an electrical connection that ensures a sensor probe has been properly positioned in a boiler well. In some embodiments, the sensor probe kit has a seating mechanism that positively positions a sensor probe at a predetermined position within a boiler well. In many instances, the seating mechanism provides tactile feedback to an installer when the sensor probe is properly positioned within the boiler well. These features can help ensure the sensor probe is properly installed, and helps keep the sensor probe electrically connected to the well at all times after installation. | 07-18-2013 |
20090031967 | INTEGRAL WATERWALL EXTERNAL HEAT EXCHANGERS - A combustion system having a combustor that includes tubing for carrying boiler water, a cyclone to recover solids from exhaust of the combustor and an external heat exchanger to recover heat from the solids, includes: a bypass for providing boiler water from the combustor to tube bundles of the external heat exchanger and a boiler water return for providing boiler water from the tube bundles to waterwall tubing of the combustor. A method and an external heat exchanger are also provided. | 02-05-2009 |
20090120384 | LOW BED PRESSURE DROP CIRCULATING FLUIDIZED BED BOILER AND COMBUSTION PROCESS - A method, system and apparatus for a low bed pressure drop circulating fluidized bed (CFB) boiler associated with fast bed CFB combustion are disclosed. The CFB boiler may be operated according to the following set of conditions. In an upper area of a combustor of the boiler, a flow pattern of the two-phase gas-solid flow may be placed in a fast bed fluidization state. The combustor temperature may be within a range of 850° C.-930° C. The fluidizing air velocity may be within 4 m/s and 6.2 m/s. An average size of a bed material in the combustor may be smaller than 300 μm. The gas-solid flow above of the secondary air inlet in the combustor may be kept in the fast bed fluidization state while maintaining a solid concentration of between 1 kg/m3 to 5 kg/m3. An inventory of bed material per unit area and/or the pressure drop in the combustor may be less than 8 kPa. | 05-14-2009 |
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 |
20090314226 | CIRCULATING FLUIDIZED BED BOILER AND METHOD OF OPERATION - A circulating fluidized bed boiler having improved reactant utilization. The circulating fluidized bed boiler includes a circulating fluidized bed having a dense bed portion and a lower furnace portion above the dense bed portion. At least one secondary air and recirculated flue gas injection device is downstream of the circulating fluidized bed for providing mixing of the reactant and the flue gas in the furnace above the dense bed. The present invention also includes methods of operating a fluidized bed boiler. | 12-24-2009 |
20100175637 | CATALYTIC HEATER - A catalytic heating system comprising a main catalyst ( | 07-15-2010 |
20110073049 | IN-BED SOLIDS CONTROL VALVE - A circulating fluidized bed (CFB) boiler comprising a reaction chamber. A bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. At least one non-mechanical valve, which includes an opening between the CFB and BFB and independently controlled fluidizing means located both upstream and downstream of the opening, is used to control the heat transfer to the IBHX by controlling the solids discharge from the BFB to the CFB. The elevation of the bottom of the opening is at or above the elevation of the fluidizing means. A flow control barrier may be located downstream of the opening. | 03-31-2011 |
20110073050 | CIRCULATING FLUIDIZED BED (CFB) WITH IN-FURNACE SECONDARY AIR NOZZLES - A circulating fluidized bed (CFB) boiler includes a reaction chamber, where a bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. A plurality of in-bed secondary air nozzles comprise a plurality of tubes which are grouped together and run across the width of the BFB between the BFB enclosure wall and an outside wall of the CFB. The nozzles are positioned to prevent the deflection of solids falling onto the BFB from the CFB by the secondary air jets while avoiding a complicated structure that would interfere with gas and/or solids movement in the furnace. The nozzles' exit openings are flush, or almost flush, with the BFB enclosure wall. | 03-31-2011 |
20110073051 | Oxyfuel Combustion Boiler Plant and Operation Method of Oxyfuel Combustion Boiler Plant - An oxyfuel combustion boiler plant comprising:
| 03-31-2011 |
20110180023 | Burner for the Combustion of Hydrogen on a Catalyst and Boiler for said Burners | 07-28-2011 |
20110226195 | Wall Construction for a Boiler Arrangement - A wall construction for a boiler arrangement. The boiler arrangement is formed of at least a furnace and a separator. The furnace has a grid, a bottom part, and an upper part. The separator is arranged by conduits in flow communication with both the upper part and the bottom part of the furnace. The conduits, together with the separator, form an external circulation of bed material. The upper part of the furnace has four vertical walls, and the bottom part of the furnace has a height and four walls extending from the grid up to the vertical walls. The wall construction includes at least one hollow beam being attached to a wall of the bottom part of the furnace and extending substantially over the entire height of the bottom part, and the at least one hollow beam being in flow communication with the external circulation for returning bed material into the furnace. | 09-22-2011 |
20120186541 | METHOD OF REDUCING FLUE GAS EMISSIONS AND A BOILER - The present invention relates to a method and a boiler for decreasing the amount of nitrogen oxides in flue gases of a boiler, which flue gases are generated in the combustion of fuels and air. The boiler has a water circulation system comprising superheaters ( | 07-26-2012 |
20120240870 | CIRCULATING FLUIDIZED BED BOILER WITH GAS-SOLID SEPARATOR - A gas-solid separator for a boiler includes a film divider defining first and second flue channels, an expanded cornering channel, a sealed collecting chamber, flue inlet and outlet provided at a front upper portion and a rear upper portion of the separator respectively, an even flow distributing tube set, and wear resistant connecting duct at the cornering channel, the upper and bottom portions of the even flow distributing tube set linked to the film bottom transverse tube collecting box and the collecting chamber transverse tube collecting box respectively, the upper and bottom portions of the wear resistant connecting duct linked to the film bottom transverse tube collecting box and the connecting duct transverse tube collecting box respectively. The boiler with low/medium circulating rate uses single stage inertial gravity separation. The boiler with high circulating rate uses a low temperature cyclone separator with the present invention when the flow rate at the second flue channel is relatively high. | 09-27-2012 |
20130284119 | CIRCULATING FLUIDIZED BED BOILER - A circulating fluidized bed boiler is disclosed. The circulating fluidized bed boiler comprising: a furnace defined and enclosed by water walls, a ceiling and an air distributor, the water walls comprising front and rear walls and left and right side walls (AJ, TK) formed by water cooling tubes, and the water walls are provided with secondary air ports (Y) in the lower part thereof, and furnace flue gas outlets (AB, EF, IJ, KL, OP, ST) being provided in an upper part of the furnace; at least two cyclones connected with the furnace flue gas outlets (AB, EF, IJ, KL, OP, ST); a loop-seal is connected with solid outlets of the cyclones and the lower part of the furnace, respectively; and a flue gas duct connected with flue gas outlets of the cyclones wherein the water cooling wall tubes of the water wall form at least one vertical columnar recessed segment (BCDE, FGHI, SRQP, ONML) recessed toward the inside of the furnace, and the at least one columnar recessed segment (BCDE, FGHI, SRQP, ONML) extends at least 15% of the furnace height in a vertical direction. | 10-31-2013 |
20130284120 | Circulating Fluidized Bed Boiler Having Two External Heat Exchangers for Hot Solids Flow - A circulating fluidized bed boiler including a furnace for combusting solid carbonaceous fuel in a fast fluidized bed, the furnace having walls made of water/steam tube panels and used for evaporating water fed therein. A solids separator arranged adjacent to a sidewall of the furnace separates solids entrained with exhaust gas discharged via an outlet channel from an upper portion of the furnace. A gas seal conveys at least a portion of the separated solids to a first fluidized bed heat exchange changer arranged downstream of the gas seal and has internal heat exchange surfaces. A first lift channel has a lower end connected to a bottom portion of the first fluidized bed heat exchanger chamber and an upper end connected to an upper end of a first return channel for discharging solids from the first fluidized bed heat exchange chamber and for taking the cooled solids to a lower portion of the furnace. A second fluidized bed heat exchange chamber is arranged adjacent to a lower sidewall of the furnace and has internal heat exchange surfaces, an inlet channel arranged between the second fluidized bed heat exchange chamber and the furnace for introducing hot solids from the furnace to the second heat exchange chamber, a second lilt channel having a lower end connected to a bottom portion of the second fluidized bed heat exchange chamber and an upper end connected to discharge the solids to the lower portion of the furnace. The first fluidized bed heat exchanger chamber is positioned above the second. | 10-31-2013 |
20100043729 | ATMOSPHERIC ELECTRON PARTICLE BEAM GENERATOR - Provided is an atmospheric electron particle beam nozzle, with a nozzle body having a lumen disposed therethrough; an electrode that is disposed within the lumen, optionally concentrically with the nozzle body, to define an output chamber within the lumen that encompasses the electrode. Also provided is an atmospheric electron particle beam system that provides: a nozzle, that supplies a nozzle body having a lumen disposed therethrough; an electrode disposed within the lumen, optionally concentrically with the nozzle body, to define an output chamber; an RF generator that is in communication with a transformer having a number of turns and connected to a vacuum variable capacitor, and connected electrically to the electrode; and a fluid source that supplies the nozzle with a fluid. Also herein is a method of projecting an electron beam, by projecting an electron charged fluid sheath over a distance, and projecting the electron beam within the sheath. | 02-25-2010 |
122004000 | Catalyst | 14 |
20080216773 | Home appliance system using high temperature fuel cell system and method of supplying super heated steam - The home appliance system includes a high temperature fuel cell system in which fuel is reacted with oxygen to generate electricity and super heated steam, a steam path through which the super heated steam is transferred, and a home appliance connected to the steam path to use the super heated steam. | 09-11-2008 |
20080251037 | STEAM GENERATOR ARRANGEMENT - A method and apparatus effectively bypasses flue gas through or around selected boiler convection heat transfer tube banks within a new or existing boiler flue. Heat transfer tubes are removed, or omitted in the design of a new boiler flue, forming one or more voids at one or more locations within the tube banks. A bypass flue or conduit is formed within each void, for example using steel plates, along with existing flue walls, or using an integral sleeve. A wall of the bypass flue may include water or steam-cooled tubes. Dampers may be installed at either end of or within the bypass flue to control the amount of flue gas directed through each bypass flue. | 10-16-2008 |
20090044766 | Method for disassembling a boiler - A method for disassembling a boiler supported on a supporting structure is disclosed. The method includes a holder installation step for providing a vertically extendable ascent-descent holder below the boiler; a holder lifting step for increasing a height of the ascent-descent holder to a position close to or in contact with a lower end of the boiler; a cutting step for cutting off a lower part of the boiler, the lower part extending from the lower end of the boiler to a predetermined height; and a removal step for removing the lower part from the holder, after the lower part being cut off and the weight of the lower part being transferred to the ascent-descent holder; the holder installation step, the holder lifting step, the cutting step, and the removal step are repeatedly carried out for successively disassembling the boiler from a bottom side thereof. | 02-19-2009 |
20090173294 | Gas and electric heating system - The gas and electric heating system has combination gas and electric heat generators to provide energy to a steam-generating boiler. The system has a blue-flame, gaseous-fuel burner disposed externally to provide heat to a steam-generating boiler and electrical heating elements that are positioned inside the boiler. Steam generated in the boiler flows to a heating core. The core is positioned in an air duct. Heat is transferred from the core to air flowing through the duct. The heated air flows from the duct into an area to be heated. Controls are provided to correlate the functions of the various components in the system. | 07-09-2009 |
20110253068 | User-Powered Water Heater - Water heaters are described that are user-powered, such that external sources of power are unnecessary. The water heaters include a heating device and a generator coupled to a crank such that power is generated as the crank is rotated, which can be used to power the heating device. | 10-20-2011 |
20130032100 | NUCLEAR STEAM GENERATOR STEAM NOZZLE FLOW RESTRICTOR - A steam nozzle flow restrictor for a steam generator that restricts steam exit flow during a steam line break, but has a low pressure drop during normal operation. The flow restrictor has a support web suspended from the steam outlet nozzle with the web having a central opening concentric with the central axis of the nozzle. A shaft is slidably supported within the central opening of the web and has an orifice plate that is suspended within the steam generator at one end of the shaft, spaced from the steam nozzle. The orifice plate closes against the underside of the nozzle upon encountering increased steam exit flow as a result of a steam line break. | 02-07-2013 |
20130180473 | TACTILE FEEDBACK TECHNIQUES TO LIMIT TEMPERATURE RUNAWAY IN BOILER SYSTEMS - Some aspects of the present disclosure relate to a sensor probe kit that has an electrical connection that ensures a sensor probe has been properly positioned in a boiler well. In some embodiments, the sensor probe kit has a seating mechanism that positively positions a sensor probe at a predetermined position within a boiler well. In many instances, the seating mechanism provides tactile feedback to an installer when the sensor probe is properly positioned within the boiler well. These features can help ensure the sensor probe is properly installed, and helps keep the sensor probe electrically connected to the well at all times after installation. | 07-18-2013 |
20090031967 | INTEGRAL WATERWALL EXTERNAL HEAT EXCHANGERS - A combustion system having a combustor that includes tubing for carrying boiler water, a cyclone to recover solids from exhaust of the combustor and an external heat exchanger to recover heat from the solids, includes: a bypass for providing boiler water from the combustor to tube bundles of the external heat exchanger and a boiler water return for providing boiler water from the tube bundles to waterwall tubing of the combustor. A method and an external heat exchanger are also provided. | 02-05-2009 |
20090120384 | LOW BED PRESSURE DROP CIRCULATING FLUIDIZED BED BOILER AND COMBUSTION PROCESS - A method, system and apparatus for a low bed pressure drop circulating fluidized bed (CFB) boiler associated with fast bed CFB combustion are disclosed. The CFB boiler may be operated according to the following set of conditions. In an upper area of a combustor of the boiler, a flow pattern of the two-phase gas-solid flow may be placed in a fast bed fluidization state. The combustor temperature may be within a range of 850° C.-930° C. The fluidizing air velocity may be within 4 m/s and 6.2 m/s. An average size of a bed material in the combustor may be smaller than 300 μm. The gas-solid flow above of the secondary air inlet in the combustor may be kept in the fast bed fluidization state while maintaining a solid concentration of between 1 kg/m3 to 5 kg/m3. An inventory of bed material per unit area and/or the pressure drop in the combustor may be less than 8 kPa. | 05-14-2009 |
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 |
20090314226 | CIRCULATING FLUIDIZED BED BOILER AND METHOD OF OPERATION - A circulating fluidized bed boiler having improved reactant utilization. The circulating fluidized bed boiler includes a circulating fluidized bed having a dense bed portion and a lower furnace portion above the dense bed portion. At least one secondary air and recirculated flue gas injection device is downstream of the circulating fluidized bed for providing mixing of the reactant and the flue gas in the furnace above the dense bed. The present invention also includes methods of operating a fluidized bed boiler. | 12-24-2009 |
20100175637 | CATALYTIC HEATER - A catalytic heating system comprising a main catalyst ( | 07-15-2010 |
20110073049 | IN-BED SOLIDS CONTROL VALVE - A circulating fluidized bed (CFB) boiler comprising a reaction chamber. A bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. At least one non-mechanical valve, which includes an opening between the CFB and BFB and independently controlled fluidizing means located both upstream and downstream of the opening, is used to control the heat transfer to the IBHX by controlling the solids discharge from the BFB to the CFB. The elevation of the bottom of the opening is at or above the elevation of the fluidizing means. A flow control barrier may be located downstream of the opening. | 03-31-2011 |
20110073050 | CIRCULATING FLUIDIZED BED (CFB) WITH IN-FURNACE SECONDARY AIR NOZZLES - A circulating fluidized bed (CFB) boiler includes a reaction chamber, where a bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. A plurality of in-bed secondary air nozzles comprise a plurality of tubes which are grouped together and run across the width of the BFB between the BFB enclosure wall and an outside wall of the CFB. The nozzles are positioned to prevent the deflection of solids falling onto the BFB from the CFB by the secondary air jets while avoiding a complicated structure that would interfere with gas and/or solids movement in the furnace. The nozzles' exit openings are flush, or almost flush, with the BFB enclosure wall. | 03-31-2011 |
20110073051 | Oxyfuel Combustion Boiler Plant and Operation Method of Oxyfuel Combustion Boiler Plant - An oxyfuel combustion boiler plant comprising:
| 03-31-2011 |
20110180023 | Burner for the Combustion of Hydrogen on a Catalyst and Boiler for said Burners | 07-28-2011 |
20110226195 | Wall Construction for a Boiler Arrangement - A wall construction for a boiler arrangement. The boiler arrangement is formed of at least a furnace and a separator. The furnace has a grid, a bottom part, and an upper part. The separator is arranged by conduits in flow communication with both the upper part and the bottom part of the furnace. The conduits, together with the separator, form an external circulation of bed material. The upper part of the furnace has four vertical walls, and the bottom part of the furnace has a height and four walls extending from the grid up to the vertical walls. The wall construction includes at least one hollow beam being attached to a wall of the bottom part of the furnace and extending substantially over the entire height of the bottom part, and the at least one hollow beam being in flow communication with the external circulation for returning bed material into the furnace. | 09-22-2011 |
20120186541 | METHOD OF REDUCING FLUE GAS EMISSIONS AND A BOILER - The present invention relates to a method and a boiler for decreasing the amount of nitrogen oxides in flue gases of a boiler, which flue gases are generated in the combustion of fuels and air. The boiler has a water circulation system comprising superheaters ( | 07-26-2012 |
20120240870 | CIRCULATING FLUIDIZED BED BOILER WITH GAS-SOLID SEPARATOR - A gas-solid separator for a boiler includes a film divider defining first and second flue channels, an expanded cornering channel, a sealed collecting chamber, flue inlet and outlet provided at a front upper portion and a rear upper portion of the separator respectively, an even flow distributing tube set, and wear resistant connecting duct at the cornering channel, the upper and bottom portions of the even flow distributing tube set linked to the film bottom transverse tube collecting box and the collecting chamber transverse tube collecting box respectively, the upper and bottom portions of the wear resistant connecting duct linked to the film bottom transverse tube collecting box and the connecting duct transverse tube collecting box respectively. The boiler with low/medium circulating rate uses single stage inertial gravity separation. The boiler with high circulating rate uses a low temperature cyclone separator with the present invention when the flow rate at the second flue channel is relatively high. | 09-27-2012 |
20130284119 | CIRCULATING FLUIDIZED BED BOILER - A circulating fluidized bed boiler is disclosed. The circulating fluidized bed boiler comprising: a furnace defined and enclosed by water walls, a ceiling and an air distributor, the water walls comprising front and rear walls and left and right side walls (AJ, TK) formed by water cooling tubes, and the water walls are provided with secondary air ports (Y) in the lower part thereof, and furnace flue gas outlets (AB, EF, IJ, KL, OP, ST) being provided in an upper part of the furnace; at least two cyclones connected with the furnace flue gas outlets (AB, EF, IJ, KL, OP, ST); a loop-seal is connected with solid outlets of the cyclones and the lower part of the furnace, respectively; and a flue gas duct connected with flue gas outlets of the cyclones wherein the water cooling wall tubes of the water wall form at least one vertical columnar recessed segment (BCDE, FGHI, SRQP, ONML) recessed toward the inside of the furnace, and the at least one columnar recessed segment (BCDE, FGHI, SRQP, ONML) extends at least 15% of the furnace height in a vertical direction. | 10-31-2013 |
20130284120 | Circulating Fluidized Bed Boiler Having Two External Heat Exchangers for Hot Solids Flow - A circulating fluidized bed boiler including a furnace for combusting solid carbonaceous fuel in a fast fluidized bed, the furnace having walls made of water/steam tube panels and used for evaporating water fed therein. A solids separator arranged adjacent to a sidewall of the furnace separates solids entrained with exhaust gas discharged via an outlet channel from an upper portion of the furnace. A gas seal conveys at least a portion of the separated solids to a first fluidized bed heat exchange changer arranged downstream of the gas seal and has internal heat exchange surfaces. A first lift channel has a lower end connected to a bottom portion of the first fluidized bed heat exchanger chamber and an upper end connected to an upper end of a first return channel for discharging solids from the first fluidized bed heat exchange chamber and for taking the cooled solids to a lower portion of the furnace. A second fluidized bed heat exchange chamber is arranged adjacent to a lower sidewall of the furnace and has internal heat exchange surfaces, an inlet channel arranged between the second fluidized bed heat exchange chamber and the furnace for introducing hot solids from the furnace to the second heat exchange chamber, a second lilt channel having a lower end connected to a bottom portion of the second fluidized bed heat exchange chamber and an upper end connected to discharge the solids to the lower portion of the furnace. The first fluidized bed heat exchanger chamber is positioned above the second. | 10-31-2013 |
20100043729 | ATMOSPHERIC ELECTRON PARTICLE BEAM GENERATOR - Provided is an atmospheric electron particle beam nozzle, with a nozzle body having a lumen disposed therethrough; an electrode that is disposed within the lumen, optionally concentrically with the nozzle body, to define an output chamber within the lumen that encompasses the electrode. Also provided is an atmospheric electron particle beam system that provides: a nozzle, that supplies a nozzle body having a lumen disposed therethrough; an electrode disposed within the lumen, optionally concentrically with the nozzle body, to define an output chamber; an RF generator that is in communication with a transformer having a number of turns and connected to a vacuum variable capacitor, and connected electrically to the electrode; and a fluid source that supplies the nozzle with a fluid. Also herein is a method of projecting an electron beam, by projecting an electron charged fluid sheath over a distance, and projecting the electron beam within the sheath. | 02-25-2010 |