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| Number | Title | Issue Date |
| 7954460 | Boiler apparatus A boiler apparatus for leading fluid from a plurality of upper walls (2) to (4) to a ceiling wall (7) through a ceiling wall inlet header (11), characterized in that a ceiling wall inlet mixing header (8) is installed between the p... | 06/07/2011 |
| 7509927 | Hydraulic header for a heating system A hydraulic header for a heating system includes a header housing having a vertical longitudinal axis in an installation position and a water chamber formed in an interior of the housing. A boiler inlet flow connection and a boiler return flow connection are provide... | 03/31/2009 |
| 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 |
| 7152537 | Fluidized bed boiler furnace comprising two hearths separated by an inside leg area The fluidized bed boiler furnace having two hearths (2, 3) separated by a divider (1) in the bottom portion of the furnace comprises one or more panels (6) of heat exchange tubes each disposed vertically above the divider of the furnace and perp... | 12/26/2006 |
| 7017529 | Boiler system and method of controlling a boiler system A boiler system including a first manifold, a second manifold provided at an elevation above the first manifold, and a heat exchanger conduit fluidly connecting the first and second manifolds. The conduit is provided within a first fluid flow, and the heat exchanger... | 03/28/2006 |
| 6911185 | Fluidized-bed reactor for the oxychlorination of ethyene, oxygen and HCl A fluidized-bed reactor for the oxychlorination of ethylene, oxygen and HCL, comprises a heat exchanger, having tube packets in the fluidized-bed for releasing the heat evolved from exothermic reaction to a heat-transfer medium in the tube packets, in particular to ... | 06/28/2005 |
| 6712027 | Hot water heating system and connector for use therewith A hot water heating system, coupler and integrated flow system. The hot water heating system includes a first isolator valve, a flow control valve, a circulator and a second isolator valve. Each of these components is equipped with one portion of a connector on one ... | 03/30/2004 |
| 6484799 | Control system for movable heat recovery coils A method and apparatus for controlling heat recovery coils in an exhaust stack. A set of heat recovery coils at least partially filled with a heat conducting fluid is positioned in a hot zone. The recovery coils are biased in a direction out of the hot zo... | 11/26/2002 |
| 6067944 | 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... | 05/30/2000 |
| 5913288 | Dual drum boiler A long-lasting hot water boiler. The boiler has a lower drum with a first pass fire-tube for generating combustion gases, an upper drum with a second pass fire-tube bundle for the gaseous products of combustion, and a lined fire reversing chamber for dire... | 06/22/1999 |
| 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 |
| 5870976 | Boiler with serpentine tubes A highly efficient boiler made up of a housing containing upper and lower manifolds. Identical tubes connect the manifolds on the right and left sides to form a plurality of superimposed passages which the combustion gases must successively traverse later... | 02/16/1999 |
| 5845591 | Branch pipe for a rotary combustor A rotary combustor is disclosed in which a plurality of tubes connect a first header to a second header, and in which the first and second headers have a plurality of baffles dividing them into a plurality of chambers. In accordance with the invention, a ... | 12/08/1998 |
| 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 |
| 5353749 | Boiler design A boiler for converting water to steam comprising a boiler enclosure having walls. An upper drum and a lower drum supported on the walls. First boiler tubes connected to the upper drum and to the lower drum. Second boiler tubes are connected to the upper ... | 10/11/1994 |
| 5347957 | Water heater with reduced NOx output A water heater with reduced nitrogen oxides output utilizing NOx reducing water conduits to cool a laminar flame and thereby reduce production of nitrogen oxides, The water heater has a partially aerated burner using a partially premixed combus... | 09/20/1994 |
| 5273002 | Water tube boiler A water tube boiler comprises a furnace having a burner and a vertical flue gas stack located to one side of the furnace. A convection tube assembly is arranged in the stack for the recovery of heat from flue gases passing through the flue gas stack. With... | 12/28/1993 |
| 5253703 | Waste heat exchanger A heat exchanger adapted to handle dusty hot waste gases including a vertically oriented shell through which the waste gases flow longitudinally downward. The shell contains a tube assembly of vertical tubes having external, longitudinal heat transfer fin... | 10/19/1993 |
| 5247991 | Heat exchanger unit for heat recovery steam generator A tubular type heat exchanger unit which utilizes upper inlet and outlet headers which are each series connected to at least three lower parallel headers by multiple elongated vertically-oriented tubes. The lower headers are connected together by a plural... | 09/28/1993 |
| 5083529 | Steam generator with ring header, particularly for a nuclear power station A steam generator for a PWR comprise a pressure vessel having an upper portion forming a steam chamber and a bundle of U-shaped exchange tubes within the vessel. A feed-water ring header is located within the pressure vessel above the bundle, extends hori... | 01/28/1992 |
| 5060601 | Water-tube boiler and a heating installation equipped with such a boiler A water-tube boiler is disclosed, comprising a body in which are located the furnace and a series of vertical tubes serving as heating and exchange surface between the furnace and the water to be heated flowing through these tubes, two respectively upper ... | 10/29/1991 |
| 5050542 | Boiler A highly efficient boiler is made up of a housing containing upper and lower left and right water manifolds. Tubes connect the left manifolds and other tubes the right manifolds. The tubes are bent toward one another to form a plurality of superposed cham... | 09/24/1991 |
| 5005529 | Modular heat recovery steam generator having parallel offset headers A modular type heat recovery steam generator (HRSG) utilizes multiple pairs of parallel offset upper headers and into which at least two rows of vertically-oriented tubes are connected also to a lower header. The upper headers in each pair are offset from... | 04/09/1991 |
| 4967699 | Steam generator Steam generators are used in pressurized water-cooled nuclear reactors for generating steam which issues from the generator through a large bore steam outlet. Heat-exchange tubes through which feed water flows are surrounded by hot cooling water from the ... | 11/06/1990 |
| 4953509 | Forced-circulation steam generator A forced-circulation steam generator with a combustion chamber (1) that has a cone (2), whereby the combustion chamber is demarcated by piping walls with at least partly slanting pipes, the cone is composed of piping walls (9, 10, 11, and 12) with upright... | 09/04/1990 |
| 4811696 | Bent tube waste heat steam generator and method A bent tube waste heat steam generator for use in a catalytic regenerator, and method of use. The regenerator has an outer shell and has a level of catalysts therein. A steam generator is in operative association with the regenerator and includes a riser,... | 03/14/1989 |
| 4593755 | Heat exchanger A heat exchanger including a plurality of tubes arranged in at least three side-by-side planes, the tubes being held at their ends in the sidewalls of an even-sided polygon of at least six sidewalls, each sidewall being connected to its opposite sidewall ... | 06/10/1986 |
| 4577593 | Waterwall tube orifice mounting assembly In a forced steam generator (10) having orifice assemblies (36) positioned in the inlet of each tube (28) lining the walls of the furnace (12). The orifice assemblies are explosively (46) expanded into each tube. In order to permit the tubes to be complet... | 03/25/1986 |
| 4553502 | Tube-type heat exchanger The exchanger is placed in a fluid of elevated temperature and comprises tubes connected to an inlet header and to an outlet header. The exchanger comprises a plurality of panels (4) constituted by tubes (41 to 48) extending below two inlet headers and tw... | 11/19/1985 |
| 4550688 | Steam outlet connection for a steam generator Steam outlet connection for connecting the outlet (5) of a tube of the bank of tubes of a steam generator to the pipe (8) connecting it to a steam header. The connection is of the T type with a straight portion (10) closed at one end and a side branch (19... | 11/05/1985 |
| 4413590 | Boiler for a heating system A liquid or solid fuel-fired boiler for a central heating system is disclosed comprising a combustion chamber and a heat exchanger arranged therearound and connected in a heating fluid circuit comprising an upper header and a lower header interconnected b... | 11/08/1983 |
| 4244327 | Steam generator arrangement A steam flow path arrangement for covering the walls of the rear gas pass of a steam generator. The entire flow passes down the sidewalls with a minor portion then passing up through the rear wall to a superheater inlet header at an intermediate elevation... | 01/13/1981 |
