摘要:
The present invention provides a combustor for a fuel processor which integrates a burner and a catalyst. The burner is utilized to quickly heat the catalyst to a light-off temperature to prepare it for normal operation. The heated catalyst is then used to react anode exhaust with air or cathode exhaust under normal operation.
摘要:
Computer simulation was used in the development of an inward-burning, radial matrix gas burner and heat pipe heat exchanger. The burner and exchanger can be used to heat a Stirling engine on cloudy days when a solar dish, the normal source of heat, cannot be used. Geometrical requirements of the application forced the use of the inward burning approach, which presents difficulty in achieving a good flow distribution and air/fuel mixing. The present invention solved the problem by providing a plenum with just the right properties, which include good flow distribution and good air/fuel mixing with minimum residence time. CFD simulations were also used to help design the primary heat exchanger needed for this application which includes a plurality of pins emanating from the heat pipe. The system uses multiple inlet ports, an extended distance from the fuel inlet to the burner matrix, flow divider vanes, and a ring-shaped, porous grid to obtain a high-temperature uniform-heat radial burner. Ideal applications include dish/Stirling engines, steam reforming of hydrocarbons, glass working, and any process requiring high temperature heating of the outside surface of a cylindrical surface.
摘要:
A fire effect appliance which utilizes a bowl to which is to be supplied a flammable gas. The internal chamber of the fire bowl includes a diffusing device which is to function to evenly distribute the gas throughout a particulate matter contained within the internal chamber of the fire bowl. The fire bowl can be placed on a freestanding stand or mounted within a table. A fan and shroud can be mounted in conjunction with the fire bowl for the purpose of propelling the heated air exteriorly of the fire bowl so the appliance can also function as a heater.
摘要:
A catalytic combustor contains multiple sections for catalytically combusting an anode effluent. The anode effluent is divided into a plurality of portions with each portion routed to a different section or stage of the combustor. The proportioning of the anode effluent allows the combustor to be operated so that the flows combusted do not autoignite and various heat loads placed on the different stages of the combustor can be met. Additionally, the proportioning of the anode effluent allows the temperature within the various components of the combustor to be controlled so that a useful life of the combustor can be increased.
摘要:
The invention relates to a method for the combustion of liquid fuel (F), especially oil. Wherein the liquid fuel (F) is distributed by means of a distribution device (1) and directed to a downstream reactor with porous means (6) having a communicating pore volume, whose Pecler number allows for flame expansion and full combustion of the liquid fuel (F) inside the porous means (6).
摘要:
The invention is a method and apparatus for purging an oxidant or residual fuel by controlled oxidation within a closed loop system. The particular application disclosed can operate to purge oxygen from an anode loop of a fuel cell just prior to startup, and can also operate to consume the remaining hydrogen or fuel at shutdown. The method employs the addition of additional fuel to a feed stream within the anode loop to a level that will through oxidation within the apparatus deplete the desired amount of oxygen. The method also employs the addition of air into a hydrogen feed loop that through oxidation within the apparatus consumes the hydrogen. Oxidation is accomplished first by diffusion burning and then catalysis to accomplish the depletion quickly. The method and apparatus eliminates the need for a separately stored inert gas purge tank and associated systems.
摘要:
A catalytic combustor burns a fuel-air mixture which is not preheated. The combustor includes a strip or strips of metal which define a plurality of alternating wide and narrow channels. The channels contain corrugated strips which maintain the spacing of the channels. A catalyst coating is deposited only in the wider channels, the narrower channels remaining un-catalyzed. The strip or strips can be heated resistively to start the combustion. Once the combustion is started, the electric current is stopped, and the combustion continues. The combustor is useful in a home heating appliance such as a gas furnace. In another embodiment, in which the combustor is used in a high-temperature environment such as in a gas turbine, the catalyst can be deposited in the small channels only, so as to limit the amount of catalytic combustion.
摘要:
A matrix bed is disclosed in which a non-planar reaction wave front is formed during operation. This is accomplished by heating the matrix bed, containing heat-resistant material, until at least a reaction portion of the matrix bed is above the temperature required for a plurality of reactant gas streams to react. Next, the reactant gas streams are directed through the matrix bed in a manner so as to form at least a Bunsen, Burke-Schumann, inverted-V, or some other type of non-planar reaction wave front at the portion of the matrix bed that is heated above the reactant gas streams reaction temperature. At the non-planar reaction wave front, the reactant gas streams react to produce a reaction product gas stream that is then exhausted from the matrix bed.
摘要:
Disclosed is a hybrid high pressure catalytic combustion burner employing catalysts and CST combustion with staged mixing systems, in which a primary combustion gas containing reacted gas of a primary gas mixture, which is formed via catalytic combustion, is subject to a secondary mixing with the primary gas mixture containing fuel and high temperature air, completing stable high temperature CST combustion at ultra lean conditions, thereby achieving high temperature combustion reducing formation of NOx.
摘要:
The invention relates to a catalyzer for burning at least part of a fuel/oxidant mixture flowing through the catalyzer, in particular for a burner of a power plant installation. The catalyzer comprises several catalytically active channels and several catalytically inactive channels. A longitudinal section of the catalyzer is spaced apart from an inflow side in the main flow direction. In this longitudinal section turbulators are arranged in at least several catalytically active channels. In addition or alternatively, connections that enable a flow between the channels are formed in this longitudinal section between several adjoining channels.