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| Number | Title | Issue Date |
| 7827941 | Boiler To provide a boiler equipped with a water tube group performing heat recovery effectively and having expansion heating surfaces (fins or the like) of high durability, the present invention provides a boiler (1) including: a boiler body (10) having an i... | 11/09/2010 |
| 7775182 | Boiler Provided is a boiler equipped with a burner capable of realizing a reduction in emission of harmful substances using a liquid fuel such as kerosene or A-type heavy oil. A burner (20) is equipped with a nozzle part (22) spraying a liquid fuel into a com... | 08/17/2010 |
| 7412946 | Water tube boiler A steam generator for generation of steam in a water tube boiler having first and second upright headers in sealed communication with lower and upper inclining banks of tubes communicating therebetween. An end portion of the tubes in the upper bank, changes to a dec... | 08/19/2008 |
| 7334542 | Compact high-efficiency boiler and method for producing steam A boiler that enhances the efficiency of the use of heated gas streams to generate steam is provided. The boiler includes a lower drum, an upper drum, a plurality of conduits adapted to transfer heated fluid from the lower drum to the upper drum, a combustion chambe... | 02/26/2008 |
| 7291313 | NOx removal system for boilers The invention provides a NOx removal system for use in a boiler for realizing further reduction in NOx. Loading means for loading a reducing agent is provided at the outlet of a gas passageway in the boiler body, and a NOx removal catalyst is provided downstream of ... | 11/06/2007 |
| 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 |
| 7240639 | Method of and an apparatus for recovering heat in a fluidized bed reactor A fluidized bed reactor, comprising a furnace, a heat exchange chamber, a substantially vertical discharge channel connected to the lower part of the heat exchange chamber for removing particulate material from the heat exchange chamber to the furnace, and a substan... | 07/10/2007 |
| 7194963 | Ceramic fiber block reflector system The present invention utilizes radiation reflectors on the refractory wall of a fired furnace opposite the spaces between adjacent tubes. The refractory radiation reflectors have a base contiguous with the refractory surface and secured to a subjacent structure, and... | 03/27/2007 |
| 7189073 | Burner with staged fuel injection A burner with staged fuel injection includes at least two separate stages (4a, 4b) for fuel injection arranged along the swirl body (1). The burner is distinguished in that, between the first and the second stage (4a, | 03/13/2007 |
| 7137360 | Tube assembly for a boiler A boiler is described comprising a housing with a flue gas inlet for receiving a hot gas flame and an outlet for venting a hot gas produced by the hot gas flame, and a tube assembly mounted within the housing. The tube assembly comprises a lower manifold for receivi... | 11/21/2006 |
| 6966268 | Centrifugal combustion method using air-flow in a furnace This invention, Centrifugal and Divided Space combustion method, need to install a cylindrical fuel pot, the first combustion chamber, the second combustion chamber and an exhaust pot. It also needs to install the upper and the lower pots outside the first combustio... | 11/22/2005 |
| 6962676 | Method and apparatus in a fluidized bed heat exchanger A method and an apparatus in a fluidized bed heat exchanger including a heat exchange chamber having a fluidized bed of solid particles, heat transfer surfaces, an inlet, and an outlet. Particles are fed through the inlet onto the upper surface of the bed of solid p... | 11/08/2005 |
| 6923013 | Evaporator for medium temperature refrigerated merchandiser A refrigerated merchandiser (100) includes an upright, open-front, insulated cabinet (110) defining a product display area (125) connected in airflow communication with a compartment (120) via an air circulation circuit (122, 114, 116 | 08/02/2005 |
| 6823821 | Combustion method and apparatus for NOx reduction Combustion method and apparatus for NOx reduction are capable of easily achieving NOx reduction to an exhaust NOx value of 30 ppm or under. The combustion method is to perform in combination a first NOx reduction step for ... | 11/30/2004 |
| 6817319 | Boiler A boiler (10) in which a liquid medium is heated and steam is generated. The boiler (10) includes a housing (12), and a burner (25) for generating hot combustion gases within the housing (12). The boiler also includes a lower drum ... | 11/16/2004 |
| 6520121 | Bendable hard type water tube A bendable hard type water tube includes a first tube with one end installed with a first seat, a second tube having one end installed with a second seat, a first buckle, a second buckle, a rotary shaft installed between the second buckle and the first bu... | 02/18/2003 |
| 6491000 | Wall protection from downward flowing solids A tube wall, division wall, or wing wall section (10) for a circulating fluidized bed boiler with improved erosion resistant characteristics has a reduced diameter tube section (40) adjacent the refractory covered by an abrasion resistant refractory tile ... | 12/10/2002 |
| 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 |
| 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 |
| 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 |
| 6044805 | Wall protection from downward flowing solids A tube wall, division wall, or wing wall section for a circulating fluidized bed boiler with improved erosion resistant characteristics has a reduced diameter tube section adjacent the refractory covered by an abrasion resistant refractory tile. The refra... | 04/04/2000 |
| 5934227 | Variable pressure once-through steam generator upper furnace having non-split flow circuitry A once-through steam generator having single pass non-split fluid flow upper furnace circuitry with a one to one connection of tubes of the lower furnace spiral or vertical tube assembly being connected to the vertical tubes of the upper furnace assembly ... | 08/10/1999 |
| 5901669 | Variable pressure once-through steam generator upper furnace having non-split flow circuitry A once-through steam generator having single pass non-split fluid flow upper furnace circuitry with a one to one connection of tubes of the lower furnace spiral or vertical tube assembly being connected to the vertical tubes of the upper furnace assembly ... | 05/11/1999 |
| 5791300 | Steam generator parallel back end using pendant primary superheater and baffle wall with gas-tight header vestibule A steam generator parallel back end arrangement divides a flue gas flow into a plurality of paths in the steam generator housing. A pendant primary superheater is located in the housing near the top of the housing and a baffle wall having tubes therethrou... | 08/11/1998 |
| 5785012 | Acoustically enhanced combustion method and apparatus A method and apparatus are provided for enhancing the efficiency of combustion in a combustion chamber with the use of acoustic energy. A means for generating acoustic energy (34) is located in relation to a combustion chamber (12) such that acoustic ener... | 07/28/1998 |
| 5775265 | Cooling surface cladding In a cooling surface cladding for polygonal chambers of steam generators with a hopper-shaped floor and fired on the circulating fluidised bed principle, which consists partially of substantially vertical finned tubes extending in the manner of walls betw... | 07/07/1998 |
| 5755188 | Variable pressure once-through steam generator furnace having all welded spiral to vertical tube transition with non-split flow circuitry A once-through steam generator furnace having single pass non-split fluid flow circuitry to prevent steam-water separation with a one to one connection of smaller diameter tubes of the lower furnace spiral tube assembly being connected to the larger diame... | 05/26/1998 |
| 5746159 | Combustion device in tube nested boiler and its method of combustion In a combustion device, a boiler is provided with a water tube nest in which combustion, flame holding, fuel-air mixing, and heat absorption are carried out by each water tube in a tube nest. The arrangement of this combustion device enables elimination o... | 05/05/1998 |
| 5730087 | Tube enclosure and floor support routing for once through steam generators Pendant convection pass tube circuitry of once through steam generator have their floor and floor support tubes enlarged by a swage coupling and connected to enlarged sidewall tubes supported from steel boiler top supports to provide a more flexible circu... | 03/24/1998 |
| 5730071 | System to improve mixing and uniformity of furnace combustion gases in a cyclone fired boiler An apparatus for improving mixing and uniformity of furnace combustion gases in a boiler includes a slag screen 50, slag screen baffle 62 with a plurality of wingwall sections 52 situated between cyclone burner riser sections 64. This arrangement improves... | 03/24/1998 |
| 5722353 | Once-through steam generator vertical tube hopper enclosure with continous transition to spiral furnace enclosure A once-through steam generator having single pass non-split fluid flow circuitry with a one to one connection of furnace hopper vertical tubes assembly being connected to the spiral tubes of the lower furnace assembly.... | 03/03/1998 |
| 5713311 | Hybrid steam generating system and method A hybrid steam generating system and method in which fluid is passed through the waterwall tubes of a furnace to transfer heat from the furnace to the fluid to convert at least a portion of the fluid to steam. Under certain operating conditions, the heate... | 02/03/1998 |
| 5701850 | Steam generator A fossil-fired steam generator includes a gas flue having a surrounding wall being formed by tubes which are mutually joined gas-tightly and which are disposed substantially vertically and can conduct an upward flow through them on the medium side. The tu... | 12/30/1997 |
| 5687676 | Steam generator A steam generator is operated under both of supercritical pressure and subcritical pressure and has having generating tubes that form a furnace wall. Upper and lower generating tubes which are directed vertically and central generating tubes are inclined ... | 11/18/1997 |
| 5673654 | Marine boiler Boiler for generating steam and comprising a furnace wall defining a furnace, a casing wall concentrically encircling the furnace wall and jointly with the furnace wall defining a substantially annular interspace, steam consucting tubes positioned at the ... | 10/07/1997 |
| 5584264 | Method and apparatus for smelt spout casting installation An installation jig and method for installing the spout casting that eliminates the need for using a thick layer of refractory as previously done. The installation jig is formed from a threaded rod with a rectangular plate transversely fixed to one end of... | 12/17/1996 |
| 5575243 | Low NOx integrated boiler-burner apparatus A low NOx, integrated boiler-burner apparatus includes a horizontally fired, factory assembled package boiler having an inlet plenum and a furnace space is provided with a multi-nozzle burner (MNB) array including a plurality of vertically and ... | 11/19/1996 |
| 5568793 | Steam generator In a steam generator having a convective part arranged downstream of the furnace chamber and essentially consisting of final superheater (1), pre-superheater, evaporator and economizer connected in series on the flue-gas side, a further contact heat excha... | 10/29/1996 |
| 5560322 | Continuous vertical-to-angular tube transitions A steam generating system including an upright furnace section formed by a plurality of tubes, a portion of which have upper and lower tube ends and extend at an acute angle with respect to a horizontal plane, a portion of which extend vertically downward... | 10/01/1996 |
