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| Number | Title | Issue Date |
| 7287578 | Connection between a cooled double-wall pipe and an uncooled pipe and double-pipe heat exchanger including said connection A connection between an uncooled pipe and a cooled double-wall pipe with between the walls a hollow space run through by cooling fluid let into the hollow space and taken from the hollow space through side passages connected to cooling fluid inlet and outlet ducts a... | 10/30/2007 |
| 7178485 | Steam generator that includes a feedwater delivery device The steam generator includes a feedwater delivery device at an upper axial end of an annular space between an outer shell and a bundle wrapper of the steam generator. The feedwater, delivery device includes a header (11) having a shell of toroidal general sha... | 02/20/2007 |
| 6264465 | Combustion device A combustion apparatus for use as a boiler wherein RDF is burned as the fuel, or as an incinerator for burning municipal waste. The apparatus is diminished in the quantities of NOx produced, permits a dust collector to achieve an improved efficiency in se... | 07/24/2001 |
| 6173681 | Liquid feed pre-heater The present invention is drawn to a device for heating liquid feed for veal calves, although this device may have wider application. The present invention is a pre-heater system used to raise the temperature of liquid feed that is being pumped from cold s... | 01/16/2001 |
| 5871006 | Hot water heating system A hot water heating system having a water tower with a cold water inlet at the upper end and a hot water outlet at the lower end has a large diameter combustion inlet opening in the sidewall. A combustion chamber is secured to the water tower at the combu... | 02/16/1999 |
| 5335628 | Integrated boiler/fuel cell system A fuel cell and a boiler are coupled in such a manner that the water used to capture excess heat generated by the fuel cell is used for boiler feedwater heating. In one embodiment, steam generated by the boiler is used in an operation that converts the st... | 08/09/1994 |
| 5273000 | Reheat steam temperature control in a circulating fluidized bed steam generator A method of controlling the reheat steam temperature in a circulating fluidized bed combustion system wherein the circulating solids are cooled in a heat recovery fluid bed system containing reheat heat exchange surface. The rate of heat transfer and thus... | 12/28/1993 |
| 4947983 | Distilling apparatus A distillation apparatus includes a heating device, an inlet for medium to be distilled, a vapor outlet, a distillation space between the distillation medium inlet and the vapor outlet and a drain for the separate components of the solvent, arranged in th... | 08/14/1990 |
| 4876986 | Heat regenerator to recover both sensible and heat of condensation of flue gases A compact and maintenance-free means and method of regenerating the sensible heat from flue gases of fossil fuel furnaces by heat exchange through two circular layers of rock beds rotating under two semi-circular mantles with the first mantle applying hot... | 10/31/1989 |
| 4870927 | Device for preventing thermal stratification in a steam generator feed pipe Device for preventing thermal stratification for a steam generator feed pipe. A fixed helix (14) downstream of a rising break (12) of the pipe subdivides its interior into twisted channels. The cold water entering at a low flame rate is blocked upstream u... | 10/03/1989 |
| 4869232 | Oil and gas water heater An oil and gas fueled hot water heater system having improved efficiency and performance embodies water and air supply jackets, cold and hot water insulating check valves, and flow directors and restrictors for the hot combustion gas generated by the heat... | 09/26/1989 |
| 4842827 | Vacuum vapor transport control A vacuum vapor transport control system and method for controlling the rate of vapor flow from a reagent reservoir into a vacuum system through an orifice calibrated as to size or flow rate using a high purity fixed gas and vapor provided from multiple re... | 06/27/1989 |
| 4841916 | Evaporating apparatus with preheater An evaporating apparatus includes an evaporator (E) for converting a liquid into vapor and a preheater (2) for heating the liquid before it is fed to the evaporator (E). A pump (6) for feeding the liquid to the preheater (2) and another pump (8) for press... | 06/27/1989 |
| 4773390 | Demand hot water system A high efficiency gas hot water heater has a vertical cylindrical water tower and a cylindrical combustion chamber secured to the wall of the vertical water tower and extending horizontally therefrom. The combustion chamber has means at the outer end for ... | 09/27/1988 |
| 4714050 | Pre-heater An industrial oven, including the combination of a steam generating tank having a water inlet and a steam outlet; walls depending from said tank for defining a combustion chamber therebelow; a preheater associated with one of the said walls exteriorially ... | 12/22/1987 |
| 4653434 | Automatic water heater systems An automatic water heater system having, contained in a tank, a plurality of vertically extending spiral flame tubes surrounded by substantially vertically extending heat tubes which join the top ends of the spiral flame tubes to form a common exhaust out... | 03/31/1987 |
| 4648355 | Heat exchanger array for a step down return of condensate A heat exchanger with straight tubes for convenient cleaning and repair is constructed with superior heat exchange capabilities. The heat exchanger has an outer shell with a fluid entry and exit and end plates which support one or more tubes with a fluid ... | 03/10/1987 |
| 4648354 | Steam generating apparatus having a feedwater header A steam generator has a pressure vessel containing a stack of exchange tubes and a feedwater header of ring shape connected to a feed water intake pipe passing through the wall of the vessel. A horitzontal section of the pipe contains at least one deflect... | 03/10/1987 |
| 4561496 | Heat exchanger for the cooling of gases, particularly from the synthesis of ammonia A heat exchanger for the cooling of hot gases from the synthesis of ammonia. The heat exchanger has tubes which are bent into U-shape and are arranged within a shell. The tubes are inserted into a tube plate. An exit chamber and an entry chamber are arran... | 12/31/1985 |
| 4550687 | Apparatus for operating a high pressure boiler The invention relates to a process and to a heat exchanger (8) intended in particular for performing the process, for operating a high-pressure boiler (1), having consuming units (3', 3", 3'") connected to the high-pressure boiler (1), the condensate from... | 11/05/1985 |
| 4537157 | Vertical, collector-type high-pressure feed water preheater, with a desuperheater casing Support points (15) are provided in the duct-shaped portions (17-22) of the desuperheater casing, at which points the serpentine tubes (25) of the preheater tube-bundle are fixed in a direction, at right-angles to the longitudinal direction of the tubes, ... | 08/27/1985 |
| 4529454 | Low C-Cr-Mo steel used under wet steam A novel low C-Cr-Mo steel having an excellent weldability and a high erosion-corrosion resistance under wet steam, which consists of, in % by weight, 0.02-0.14% of C, not more than 0.90% of Si, 0.30-0.80% of Mn, 0.70-1.60% of Cr, 0.40-0.70% of Mo and the ... | 07/16/1985 |
| 4489679 | Control system for economic operation of a steam generator A once-through steam generator has both radiant and convection sections. The flue gases discharged from the convection section are passed through a wet scrubber to remove both sulfur oxides (SOx) and particulate matter. The feedwater to the con... | 12/25/1984 |
| 4484531 | Cyclic velox boiler A cyclic velox boiler is described wherein solid carbonaceous fuels are burned in pressure vessel containers by cyclic compression and expansion with air or with air and steam as usual gas reactants. During compression air is forced deeply into the pores ... | 11/27/1984 |
| 4441460 | Apparatus for heating and utilizing fluids Disclosed are methods and apparatus for heating and utilizing fluids by the use of vapor generators of the kind in which a flowing fuel/air mixture is combusted in the presence of a stream of feed water to produce a stream of steam and non-condensibles, p... | 04/10/1984 |
| 4418651 | System for heating and utilizing fluids Disclosed are methods and apparatus for the controlled heating and utilization of fluids by the use of vapor generators of the kind in which a flowing fuel/air mixture is combusted for heating a stream of feedwater to produce a stream of steam and non-con... | 12/06/1983 |
| 4413669 | Method of heat extraction from an aqueous carrier medium In a method of heat extraction from an aqueous carrier medium through its expansion, the expansion is undertaken step by step in a number of expansion stages arranged consecutively as regards the flow of the medium. The vapor produced in each expansion st... | 11/08/1983 |
| 4404929 | Liquid distributor head actuated by fluid pressure In order to improve upon the prior arrangement of a valve within a liquid distributor head for a mixing pre-heater degasifier it is proposed that a valve containing a valve plate, valve shaft, valve spring and spring plate, is arranged within the mixing p... | 09/20/1983 |
| 4393816 | Thermodynamic method for steam-water separation A thermodynamic method is described and claimed for improving the quality of wet steam produced by conventional and once through type boilers. Moisture entrained with such steam is first separated in a steam-water separation vessel. The separated moisture... | 07/19/1983 |
| 4318366 | Economizer A boiler economizer includes a first heat exchanger disposed in a boiler flue and a second heat exchanger which is external. Boiler feedwater is delivered in series to the first and second heat exchangers before passage to the boiler. A flow controller di... | 03/09/1982 |
| 4305452 | Method of pre-heating boiler feed water A method of pre-heating feed water for boilers is disclosed which utilizes the exchange of heat between the tube side of a heat-exchanger which contains de-salinated and de-ionized water and the shell side which contains hydrocarbon vapors boiling in the ... | 12/15/1981 |
| 4258668 | Closed pressurized feed water system supplying flash steam to a lower pressure process A closed pressurized feed water system supplying flash steam to a lower pressure process and with no steam loss in the closed system. The flash steam delivered to the lower pressure process is sufficient to reduce the pressure in the feed water system so ... | 03/31/1981 |
| 4257360 | Feed water preheater A feed water preheater has an integral desuperheater and an integral supercooler through which passes the feed water tube bundle. To prevent the penetration of steam into the supercooler at the point where the feed water tube bundle passes from the superc... | 03/24/1981 |
| 4249486 | Steam condensate and waste water recycling process Condensate released from traps on a chemical distillation reboiler is piped to a flash tank where steam is flashed off as condensate pressure is reduced. The steam is recondensed by contact with water obtained from heat exchangers and the condensate-water... | 02/10/1981 |
| 4182276 | Economizer for smoke tube boilers for high pressure steam and hot water An economizer system for preheating feed or return water in a high pressure steam or hot water smoke-tube boiler having a smoke-heated convection-effecting portion. The smoke tubes at the end of the smoke tube convection-effecting portion are surrounded b... | 01/08/1980 |
| 4175518 | Preheater device for hot water heaters A preheating device for hot water heaters which employs hot gases of combustion from the flue to preheat incoming cold water and to continually preheat water stored in the water tank by natural recirculation. Use of the device provides for increased fuel ... | 11/27/1979 |
| 4173949 | Feedwater preheat corrosion control system An improved arrangement for preheating feedwater in a steam boiler system prior to the feedwater entering a fuel economizer in order to prevent corrosion due to condensation of flue gas in the fuel economizer and in the exhaust of the boiler system. The f... | 11/13/1979 |
| 4163430 | Heat recovery and filter system and process for furnace exhaust gases A heat exchanger is interposed between the exhaust duct of a water boiler and the chimney or flue, and a water conduit, connected to the water return line of the heating system, is disposed within the heat exchanger in heat exchange relationship with the ... | 08/07/1979 |
| 4147135 | Device for reducing flue gas heat losses A device for the reduction of heat losses due to flue gasses in boilers of the type having a flue and which are operated with oil or gas and wherein the boiler has a heat exchanger in the flue serving to reduce the temperature of the flue gases. A heat pi... | 04/03/1979 |
| 4089304 | Apparatus for supplying feedwater to a steam generator Apparatus for supplying feedwater to a steam generator, such as a waste-heat boiler, includes the feature of degassing feedwater at a degassing station by way of a suitable degassing means, the feedwater being degassed by being heated to boiling temperatu... | 05/16/1978 |
