Abstract: A vortex recirculating combustion head for a burner, including: a housing having a through-bore, an upstream end, and a downstream end, the upstream and downstream ends arranged at opposite sides of the through-bore, the housing configured to receive combustion air; a primary fuel inlet arranged adjacent to the upstream end of the housing configured to introduce a primary fuel stream into the housing; a secondary fuel inlet arranged downstream of the primary fuel inlet configured to introduce a secondary fuel stream into the housing; a flame retention head including a diffuser plate secured to the downstream end of the housing, the diffuser plate including a plurality of openings, a plurality of fins, and a ring; and, an extension member secured to an exterior surface of the flame retention head.

Abstract: The present disclosure generally relates to the introduction of a liquid biomass in heating systems such as commercial boilers in order to reduce dependence on petroleum-based heating fuel oils as a source of combustion fuel. More specifically, the present disclosure is directed to systems, methods, and apparatuses utilizing a liquid thermally produced from biomass into commercial and industrial boiler or thermal systems such as boilers, furnaces, and kilns, and methods for generating renewable identification numbers (RINs), alternative energy credits (AECs) and renewable energy credits (RECs).

Abstract: The present disclosure generally relates to the introduction of a liquid biomass in heating systems such as commercial boilers in order to reduce dependence on petroleum-based heating fuel oils as a source of combustion fuel. More specifically, the present disclosure is directed to systems, methods, and apparatuses utilizing a liquid thermally produced from biomass into commercial and industrial boiler or thermal systems such as boilers, furnaces, and kilns, and methods for generating renewable identification numbers (RINs), alternative energy credits (AECs) and renewable energy credits (RECs).

Abstract: A system includes a turbine combustor that includes a head end portion having a head end chamber, a combustion portion having a combustion chamber disposed downstream from the head end chamber, a cap disposed between the head end chamber and the combustion chamber, and a flow separator configured to separate a first exhaust flow from an oxidant flow. The flow separator is configured to direct the first exhaust flow into the head end chamber. The turbine combustor also includes a mixing region configured to mix the first exhaust flow with the oxidant flow to provide an oxidant-exhaust mixture.

Abstract: An integrated water heating system is comprised of a hot water holding tank having an outer jacket secured in spaced relationship therearound. An insulating space is defined about the hot water holding tank and the outer jacket. A connecting bracket is secured to an outer surface of the hot water holding tank and has a projecting formation provided with an arcuate connecting wall spaced a predetermined distance from the outer surface for close fit adjacent an inner surface of the outer jacket and disposed for alignment with an external support bracket adapted to be secured thereto through the outer jacket. Thermal insulating material is disposed in the insulating space and about the connecting bracket. An external water heating device is removably supported by the external support bracket. A pump circulates water through the water heating device and through the hot water holding tank.

Abstract: A method of treating a carbon dioxide rich flue gas and a flue gas treatment system for treatment of a carbon dioxide rich flue gas are provided. A boiler system includes a boiler, being operative for combusting a fuel and generating a carbon dioxide rich flue gas, and the flue gas treatment system. The flue gas treatment system includes a gas cleaning system, a nitrogen oxides reduction unit, being operative for reducing at least a portion of a nitrogen oxide(s) content of the flue gas, and a compression and cooling device being operative for pressurizing and cooling at least a portion of the flue gas treated by the gas cleaning system and the nitrogen oxide(s) reduction unit.

Abstract: The arrangement is for positioning equipment in association with an opening in a boiler wall and has a rotation mechanism that rotates the equipment around a virtual rotation axis that lies within the outer wall of the boiler. During the use of a liquor spreader for the introduction of combustible material, the opening of the liquor spreader is arranged in the virtual center of rotation so that the point at which the combustible material is introduced is retained independently of the angle of rotation. The liquor spreader is united either with a glide device or the guide in the rotation mechanism.

Abstract: Systems and methods for exhaust gas recirculation in which at least a desired effective oxygen concentration is maintained for stable combustion at increased recirculation rates. Oxygen-enriched gas is injected into the recirculated exhaust gas to achieve the desired effective oxygen concentration.

Abstract: A hydrogen generator system includes an electrolyzer for executing a water electrolysis process and associated devices for operation thereof to produce hydrogen and oxygen, and functionally interconnected to each other: 1) a device for recovering heat generated by the electrolysis and cooling of the electrolyzer, 2) a device for storing the generated hydrogen, 3) a burner for generating heat, and 4) a fuel cell for producing electrical energy. The burner and the fuel cell are connected in parallel and suppliable with the hydrogen produced directly by the electrolyzer and/or with the hydrogen drawn from the storage device, as well as respective circuit and control and adjustment components. The entire hydrogen generator system is accommodated in a casing, which has externally a plurality of inlet connection fittings for the water and electrical power supply system for supplying the electrolyzer and outlet connection fittings for the various services and products supplied.

Abstract: A fuel delivery system includes a fuel stabilization unit that removes dissolved oxygen from liquid fuel to increase the temperature at which the liquid fuel can be elevated without substantial formation of insoluble products. At least a portion of the fuel with reduced amounts of dissolved oxygen is vaporized prior to entering a combustion device to improve mixing and combustor performance.

Abstract: A high-efficiency hot-water boiler for a heating system of a building is provided. The boiler includes a boiler enclosure that contains a furnace area compartment within an insulated sealed casing, a first watertube compartment within a sealed casing, a second watertube compartment within a sealed casing, and an air-to-air preheat exchanger within a sealed casing. A plurality of separate, closely-spaced watertubes extends within each of the compartments and provides paths for working fluid to flow through the compartments for purposes of transferring heat to the working fluid. A burner is located within the furnace area compartment for combusting an air/gas mixture.

Abstract: A raw fuel vaporizing apparatus comprising: a vaporizer for vaporizing liquid raw fuel; a raw fuel introducing device for introducing the liquid raw fuel into the vaporizer; a catalyst combustor into which fuel and air are supplied for catalytic combustion, the catalyst combustor generating heat in the presence of a catalyst and supplying the resulting heat to the vaporizer to vaporize the liquid raw fuel; a fuel introducing device for introducing the fuel into the catalyst combustor; an air introducing device for introducing the amount of the air suitable for catalytic combustion into the catalyst combustor; a heat transferring gas introducing device introducing heat transferring gas into the catalyst combustor to transfer heat retained by the catalyst combustor to the vaporizer; and a controller increasing the amount of the heat transferring gas through the heat transferring gas introducing device when the amount of vapor generated in the vaporizer is increased.

Abstract: A method for vaporizing and/or superheating a combustible/water mixture, wherein the combustible is especially methanol, for supplying a gas generation system (2) belonging to a fuel cell installation (3). The waste-gas from the fuel cell and/or gas generation system is catalytically combusted together with a gas containing oxygen in order to produce the thermal energy required therefore. The combustible is added in a dosed manner to the volume flow from the gas containing oxygen and the waste gases of the fuel cell and/or gas generator system in the direction of flow prior to catalytic combustion.

Abstract: The present invention provides improved methods of reducing NOx emissions in the flue gases produced by a steam boiler fired by a fluid fuel and combustion air burner and including a steam drum provided with make-up water from which produced steam and blowdown steam are withdrawn. In accordance with the invention at least a portion of the blowdown steam is combined with the fluid fuel or combustion air or both.

Abstract: A device 10 for both heating a fluid and for cleaning a waste gas comprises a container 14 into which waste gas is introduced through a waste gas inlet. The waste gas is moved through the container 14 by a fan 25. The blades 35 of fan 25 are also used to atomize a liquid directed thereto and to spray the liquid into the waste gas in the container 14. In addition, fan 25 facilitates the recirculation of at least a portion of the waste gas in the container 14 back through the fan 25 for repeated introduction of the waste gas into the container 14. A heat exchanger 11 is disposed in container 14 for transferring heat between the waste gas in the chamber and a liquid-to-be-heated. In a preferred embodiment, an insulated funnel 17 comprises an inlet for the waste gas.

Abstract: A water heater having a burner unit and a combustion chamber from which the combustion gases are discharged and deflected into an annular out-flow space through which they flow along a heat exchanger to an exhaust outlet in the area of the burner unit. The outer casing of the heat exchanger is made of plastic and together with a metal inner casing define a ring-shaped space through which water flows as a liquid heat transfer medium. The outer casing made of plastic is connected with the inner casing made of metal in a gas-tight and pressure-resistant way that is also stable with respect to temperature changes. The result is a reduction in weight of the water heater because of the formation of the outer casing of plastic, and the efficiency of the water heater can be improved by the fact that the losses through heat radiating from the outer casing can be reduced.

Abstract: An improved fuel burning assembly particularly adapted for use with a boiler having a fire box situated below an array of boiler tubes. The assembly discharges a number of spaced rotating streams of minute droplets of a flowable fuel both laterally and longitudinally into the fire box to intermix with a stream of air that is moving rearwardly therein. The fuel air mixture when burning blankets substantially all the boiler tubes with a sheet of flame. Due to such flame contacts substantially all of the boiler tubes are heated uniformly thereby, rather than only a portion of the boiler tubes being contacted by the flame as occurs in a boiler when a conventional burner assembly is used. As a result of the flame distribution and uniform heating of the boiler tubes, an increased thermal efficiency is attained in the operation of the boiler on which the burner assembly of the present invention is used.

Abstract: The invention relates to a forced draft household gas boiler having a sealed enclosure for the combustion assembly of the boiler.A sealed shell (15) envelopes a cylindrical heat exchanger (6) and is suspended in the upper half of a frame (1) from a horizontal plate (4) so that a central inlet opening (11) of the heat exchanger is in the axis of an outlet tube (32) of a fan (29) which directs an air/gas mixture into the burner. An outlet opening (23) for the combustion products collected in the sealed shell (15) is located within the circumference of the shell and at least approximately in the axis of an evacuation pipe (18) for evacuating combustion products external of the boiler.

Abstract: An oil burner shutter to block off an oil burner from a wood/coal boiler when not in use having a movable shutter with an aperture therein and means to move said shutter to an open or closed position including means to operate said shutter automatically in conjunction with said oil burner and the boiler's aquastat and damper.

Abstract: Apparatus and method for the preheating of oil before combustion in an oil burner utilizing a cannister containing a coil adapted for oil to circulate therethrough which cannister being further adapted for hot water of the heating system to circulate therethrough in order to heat the oil in the cannister.

Abstract: A water heater has a closed container of approximately circular cross-section, a housing surrounding at least a lower part of the water container, the housing being closed by a base and forming, with the base of the water container, a gas-tight combustion chamber, a lower induction aperture for fresh air, an upper extraction aperture for waste gases, and passages through the water container for inlet and outlet pipes. The improvement is that an annular space connected with the combustion chamber is formed between the housing and the water container. The waste gas extraction aperture and the fresh air induction aperture are located in the housing. One or two box-shaped corner sections, for one or both apertures, adjoin the curved housing and, by means of their side walls, convert the housing in the vicinity of the corner sections into a rectangular shape. A connecting branch to link up with a through-flow unit in the outer wall is provided in one side wall.

Abstract: A compact burner-boiler combination having an improved heating cycle for effecting substantial fuel saving and maximum boiler and combustion efficiency in a relatively simple and expedient manner. This is attained by a compact boiler construction utilizing an improved burner construction and method of combustion in which a liquid fuel is gasified by the heating products of combustion to form a homogeneous fuel gas-air mixture prior to combustion so as to effect a substantially stoichiometric burning of the fuel so as to result in a high velocity and a very high flame temperature (approx. 4100.degree. F.) and to cause the breakdown of a portion of the hydrocarbons into their basic component elements so as to make them available for diffusion burning.