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| Number | Title | Issue Date |
| 7878157 | Fossil-fuel heated continuous steam generator The invention relates to a fossil-energy heated continuous steam generator, whereby the at least one combustion chamber, viewed in the flow direction of the hot gases, is divided into at least two throughflow segments, formed by evaporator heating surfaces, whereby ... | 02/01/2011 |
| 7516719 | Continuous steam generator A steam generator comprising a combustion chamber having funnel-shaped side walls in the bottom area thereof and an encircling wall formed from a plurality of steam generator pipes through which a flow medium can flow, wherein there area as little temperature differ... | 04/14/2009 |
| 7322155 | Stud with heat sink A stud of the type attached to a furnace wall or boiler tube has a plurality of projections extending from the top of the stud which act as a heat sink. The projections also have a corrosion or erosion resistant coating such as a chromium diffusion layer. The stud a... | 01/29/2008 |
| 7275503 | Heat transfer tube panel module and method of constructing exhaust heat recovery boiler using the module A method of constructing an exhaust heat recovery boiler. A required number of heat transfer tube group panel modules (20) are produced in an appropriate size according to design specifications of HRSG, where the heat transfer tube group panel modules (20 | 10/02/2007 |
| 7256511 | Turbine-generator equipment and installation method thereof Installation method of turbine-generator equipment controlling a turbine-generator is described. The method includes manufacturing a thyristor excitation equipment as a package including a circuit breaker, an excitation transformer, a power rectifier coupled with th... | 08/14/2007 |
| 7253374 | Sheet-to-tube welded structure and method Method of welding a metal sheet and metal tubing as well as a welded sheet-to-tube welded structure wherein the tube-to-sheet gage ratio may be reduced to permit use of metal tubing having a reduced wall thickness. One or more intermediate metal bridging members is/... | 08/07/2007 |
| 7244400 | Fluidized bed reactor system having an exhaust gas plenum An arrangement for directing exhaust gases from at least one particle separator of a circulating fluidized bed reactor system to a heat recovery section includes a gas plenum located above a reaction chamber, the gas plenum being defined by a ceiling, a bottom, and ... | 07/17/2007 |
| 7217123 | Cooled furnace wall A cooled furnace wall comprises a furnace shell with an inner and an outer side and cooling plates lining the inner side of the furnace shell. Each of the cooling plates has a plate body and protruding connection pieces for supplying the cooling plate with a coolant... | 05/15/2007 |
| 7073451 | Furnace wall structure A furnace wall comprises: a furnace wall bottom part composed of furnace wall tubes having upward-spiraled fluid passages; a nose part which has nose wall tubes disposed in a middle part of a furnace rear wall adjoining the furnace wall bottom part; and a screen par... | 07/11/2006 |
| 7037473 | Device for gasifying combustible materials, residues and waste materials containing carbon An appliance for the gasification of carbon- and ash-containing fuel, residual and waste materials using an oxygen-containing oxidizing agent at temperatures above the melting point of the inorganic fractions, in a reaction chamber which is designed as an entrained-... | 05/02/2006 |
| 7013964 | High temperature heat exchanger structure To provide a thermal connection that can withstand mechanical stress in a high temperature structure comprising a panel having one face carrying a circuit made up of tubes in which a fluid flows, the outside walls of the tubes are covered in respective high thermal ... | 03/21/2006 |
| 7011086 | Bottom supported solar receiver panel apparatus and method A bottom supported solar receiver tube/header assembly having a bottom clip for supporting the entire load of a plurality of tubes carrying a heat absorbing fluid. The tubes are allowed to expand vertically upwardly under thermal flux conditions created when the flu... | 03/14/2006 |
| 6971169 | Heat-resistant assembly for protecting boiler tubes and method of assembling same This invention concerns a heat-resistant assembly having a heat-resistant block conformed to the contours of boiler tubes and the surface of their connecting rib. The heat-resistant assembly has an arm which protrudes from the surface of the rib toward the heat-resi... | 12/06/2005 |
| 6948437 | Thermal shielding brick for lining a combustion chamber wall, combustion chamber and a gas turbine A thermal shielding brick is useable for lining a combustion chamber wall. The thermal shielding brick has a hot side, which can be exposed to a hot medium a wall side located opposite the hot side, and a peripheral side that is joined to the hot side and to the wal... | 09/27/2005 |
| 6783726 | Cooling element and method for manufacturing cooling elements A cooling element designed particularly for furnaces, said element comprising a housing (1) mainly made of copper, and a channel system (6) provided in the housing for cooling medium circulation. At least on a part of the surface of the element housing... | 08/31/2004 |
| 6718915 | Horizontal spiral tube boiler convection pass enclosure design A convection pass enclosure for a boiler comprising a front wall having a gas inlet for receiving gases from the boiler; right and left side walls connected to the front wall; a rear wall having a gas outlet, the rear wall being connected between the right and left ... | 04/13/2004 |
| 6651596 | Continous flow steam generator having a double-flue construction A continuous flow steam generator with a double-flue construction has a vertical gas flue with an ascending conduction of fuel gas. The combustion chamber rear wall is inclined inwards and towards the combustion chamber in an upper part region and thereby... | 11/25/2003 |
| 6640753 | Steam generator of a water-tube type A steam generator of water-tubes type for burn fossil fuel where instead of the convective heat transfer of the present day boilers, the water-tubes are heated by means of the mechanism of heat conduction in solids. The water-tubes are embedded in a large... | 11/04/2003 |
| 6591790 | Fire-resistant structural body supporting metal bar for protection of water pipe A support fitting for the heat-resistant block to protect boiler tubes, which protrudes upward at a right angle from the surface of the rib between two boiler tubes, and which is welded on the rib and has a catch to engage with the heat-resistant block on... | 07/15/2003 |
| 6536380 | Fossil-fuel heated steam generator, comprising dentrification device for heating gas A steam generator has a nitrogen removal device for fuel gas and a combustion chamber, which is followed on the fuel-gas side, via a horizontal gas flue and a vertical gas flue, by a nitrogen removal device for the fuel gas. The steam generator has a part... | 03/25/2003 |
| 6499440 | Fossil-fired steam generator A steam generator has a combustion chamber which is configured for an approximately horizontal main direction of flow of the fuel gas and which is followed on the fuel-gas side, via a horizontal gas flue, by a vertical gas flue. The containment walls of t... | 12/31/2002 |
| 6481386 | Fossil-fired continuous-flow steam generator A continuous-flow steam generator includes a combustion chamber with evaporator tubes for fossil fuel. The combustion chamber is followed on the fuel-gas side by a vertical gas flue through a horizontal gas flue. When the continuous-flow steam generator i... | 11/19/2002 |
| 6446580 | Fossil fuel-fired continuous-flow steam generator The fossil fuel fired continuous-flow steam generator has a gas turbine combustion chamber for fossil combustibles. On the heating gas side a vertical gas extractor is mounted downstream of a horizontal gas extractor. The walls surrounding the combustion ... | 09/10/2002 |
| 6446584 | Fossil-fuel-fired steam generator A steam generator has an especially simple structural concept of a combustion chamber for a predetermined output range and for various qualities of different fossil fuels. The steam generator includes a first combustion chamber and a second combustion cha... | 09/10/2002 |
| 6427637 | Steam generator with at least partially double-walled evaporation tank The invention relates to a steam generator comprising an evaporation tank and several heating elements (2). The evaporation tank consists of an evaporation vessel (1) and a removable limescale rectacle (4) positioned below same. The evaporation vessel (1)... | 08/06/2002 |
| 6336429 | Drumless natural circulation boiler A drumless natural circulation boiler system has a furnace enclosure with wall tubes and upper and lower headers connected to respective upper and lower ends of the wall tubes. At least one tangential steam/water separator is connected to a plurality of r... | 01/08/2002 |
| 6318305 | Water-tube boiler The invention provides a water-tube boiler which allows further NOx reduction and CO reduction with a simple construction of the boiler body and the burner itself. The water-tube boiler includes a first water tube array made up of a plurality of first wat... | 11/20/2001 |
| 6302194 | Pipe with ribs on its inner surface forming a multiple thread and steam generator for using the pipe A pipe includes a pipe wall having an inner wall surface. Ribs are disposed on the inner wall surface forming a multiple thread. The ribs define a mean inside pipe diameter and the ribs have a lead which is equal to between 0.6 and 0.9 times the square ro... | 10/16/2001 |
| 6269782 | Water-tube boiler Boiler efficiency is further improved and the whole boiler body is slimmed down by totally improving heat transfer surfaces confronting gas flow passages, i.e., by forming the heat transfer surface structure into three stages, and moreover by making effec... | 08/07/2001 |
| 6253715 | Water-tube boiler A water-tube boiler which allows further NOx reduction and CO reduction to be implemented with an uncomplicated construction of the boiler body itself, and which is improved in boiler efficiency. The water-tube boiler includes a first water tub... | 07/03/2001 |
| 6250257 | Method for operating a once-through steam generator and once-through steam generator for carrying out the method A once-through steam generator having a combustion chamber. A containing wall of the combustion chamber is formed from vertically disposed evaporator tubes welded to one another in a gas-tight manner. The combustion chamber is to be capable of being used ... | 06/26/2001 |
| 6213059 | Technique for cooling furnace walls in a multi-component working fluid power generation system A technique for cooling furnace walls in a multi-component working fluid power generation system is disclosed. In a first embodiment, the technique involves removing process heat from a furnace having an inner tubular wall and an outer tubular wall. In a ... | 04/10/2001 |
| 6205634 | Furnace floor An improved floor for a recovery boiler furnace having a flat floor has a number of tubes in the floor immediately adjacent each of the sidewalls of the furnace oriented at an oblique angle to horizontal. A method of replacing the floor is provided as wel... | 03/27/2001 |
| 6178898 | Recovery boiler In a recovery boiler for burning spent liquor of a pulp mill, a combustion chamber has heat transfer walls formed of tubes, at least one vertical heat transfer surface formed of tubes, and superheaters in an upper part of the combustion chamber for recove... | 01/30/2001 |
| 6116196 | Water-tube boiler In a water-tube boiler in which pollutant (especially NOx) emissions are reduced, a plurality of water tubes arranged in an annular shape are provided. At least some of the water tubes thereof are spaced apart along an annulus so as to provide a plurality... | 09/12/2000 |
| 6095096 | Integrated boiler burner with balanced heat flux A package boiler having water cooled surfaces positioned relatively close to the combustion burner to improve the radiant heat transfer. Extended surfaces are added to the water cooled tube fireside surface to increase absorption rates to the limits estab... | 08/01/2000 |
| 6092490 | Heat recovery steam generator The water flow circuit for a heat recovery steam generator is a hybrid system which combines a circulating drum type circuit and a once-through circuit. A low pressure evaporator is designed for natural or forced circulation and a high pressure evaporator... | 07/25/2000 |
| 6058893 | Buckstay corner assembly with buckstay extension plates for a boiler A buckstay system of an associated furnace having a combustion cavity with a front waterwall, a rear waterwall, and opposed left and right side waterwalls joining the front and rear waterwalls and where the waterwalls are arranged in a generally square pa... | 05/09/2000 |
| 6041854 | Water cooled panel A water cooled panel (1), e.g. for metallurgical use, is constructed from a plurality of rectangular hollow section tube lengths (2), with adjacent tube lengths oriented corner-to-corner in a diamond array, with geometrical diagonals (4) of the tubes in a... | 03/28/2000 |
| 6021724 | Cyclone furnace for retrofit applications An improved Cyclone furnace particularly suitable for retrofit applications to an existing boiler incorporates a Cyclone furnace and an integrated de-slagging chamber as a single manufactured piece. The Cyclone furnace and the de-slagging chamber are prov... | 02/08/2000 |
