46 results about "Catalytic heater" patented technology

A membrane enclosed fluid diffusion system for insect attractants and repellents, auto thermostatic heaters, and chemical delivery using an additive and / or selectively permeable membrane that interacts with the enclosed fluid to maintain steady delivery rates over a range of temperature and humidity. Systems can be formed with permeable membranes, impermeable membranes, chemical hydrates, wicks, scent fluids, fuel fluids, catalytic heaters, energy conversion devices, visible images, infrared images, trapping systems, sound systems, electronics, and apparel. The device results in efficient and effective devices for mosquito control drug delivery, and portable heaters.

The fuel cells (16, 18) adjacent or near the end plate (15) of a fuel cell stack (14) are warmed either by (a) a heater wire (48) within the fuel cell (16) adjacent to the end plate, (b) heater wires (53) are disposed in a heater element (52) located between the end plate and the fuel cell closest to the end plate (15), (c) one or more heaters (56) are disposed in holes (55) within the end plate (15), (d) electric heating elements (59) on a surface of the end plate (15), or (e) a catalytic heater (61) disposed on the surface of the end plate. The fuel cells (16, 18) may be heated before or during operation at sub-freezing temperatures to prevent loss of fuel cell performance, or may be heated after operation at sub-freezing temperatures to restore fuel cell performance.

The present invention is a method of delivering vaporized alcohol fuel through a thermally conductive porous nozzle to a catalytic burner with a plasma cavity and a surrounding porous catalytic cavity with fuel vapor and air supplied separately and inter diffusing into each other from different routes to the catalyst to achieve an efficient, steady, and complete combustion of the hydrogen bearing fuels. This heating system with passive auto thermostatic behavior, coupled to thermopiles, heat pipes and fluid heating systems may provide useful heat and electricity to applications of floors, roadways, runways, electronics, refrigerators, machinery, automobiles, structures, and fuel cells.

Flameless infrared catalytic heater units are mounted in a generally wing-shaped carrier for positioning above surfaces of an aircraft. The carrier is attached to a boom end extending from a truck or other suitable self-propelled ground equipment. A temperature sensor bounces an infrared signal off the aircraft surface and inputs the skin temperature into a micro-controller regulating the output of the infrared heater units. The micro controller maintains a desired safe skin temperature sufficient to melt ice and snow from the aircraft surfaces without blistering the paint or raising concern about temperatures within fuel tanks. The catalytic heater units use inexpensive natural gas or propane. Use of this system substitutes for expensive and hazardous ethylene glycol solutions heretofore sprayed over the aircraft.

An improved apparatus is provided for curing powdered coatings on the face of porous wood products, such as medium density fiberboard (MDF), wherein a pair of inclined infrared catalytic heaters are used to apply heat directly onto the side edges of the board. In addition, catalytic heaters that are normally used to heat and cure the face surface of the board are moved father back to reduce their effectiveness and to limit out-gassing of entrapped air from the inner low density core of the board. This arrangement also allows the coating to cure at the side edges of the board at approximately the same rate as the face of the board, promoting a more uniform curing of the powder coating.

The invention relates to a device for the combined mining of methane, volatile matters and carbon in a coal field or oil gas in an oil field, which mainly comprises a steam injection well borehole or an extension-type steam injection extraction well borehole and a production well borehole or a production extraction well borehole. The upper end part of the well borehole is provided with a control device, an extraction device and a steam converter. The lower end part and the medium part as well as the lower part of the well are provided with space for a cutting section layer, or the cutting section layer space arranged on the lower end part of the well is internally provided with a steam heater or a catalytic heater which are used for conducting high-temperature high-pressure steam heating or catalytic heating to the coal layer or the oil layer, thus ensuring that the methane and the volatile matters in the coal field or the oil gas in the oil field are swiftly extracted to the ground by the extracting device. The device has the advantages of peculiar structure, advanced technology, simple and convenient mining and high extraction efficiency, and the device and the mining method have low investment and operation fee and low cost, thus being widely applied to the mining of the coal field and the oil field and the metallic minerals or the non-metallic minerals thereof.

A catalytic heater with a cylindrical combustion chamber. The catalytic heater may be positioned centrally to provide heat for a number of people or an area. A reflective top is movable to along a side of the cylindrical combustion chamber for directing the heat in a desired direction. The cylindrical catalytic heater is capable of providing heat in all directions simultaneously; i.e., in a 360 degree pattern. The movable reflector permits the heat to be directed in a desired direction, providing much flexibility for the cylindrical catalytic heater.

A catalytic heating system comprising a main catalyst (20, 50) for flameless catalytic burning of fuel gas and a triggering system for initiating the catalytic burning, the triggering system comprising an electrical power source electrically connected to a metallic catalyst portion (104). As electric current flows through the metallic catalyst portion, it is in itself heated as an electric resistance heater to a temperature necessary for triggering the catalytic burning. By using electrical current for direct heating of a catalyst portion, reaction starts as soon as the resistance heating achieves the temperature for initiating the catalytic reaction. As soon as the reaction starts, it is transferred to the main catalyst.

A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such as fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.

The present invention has to do with an apparatus for generating a three dimension heating gradient field for curing powder coated wood products. The three dimension heating gradient field is generated with catalytic heater panels having independently adjustable angles and adjustable heat outputs.

A gas powered heat delivery system, comprising a fuel gas supply, a catalytic heater connected to the fuel gas supply; a tank containing fluid, the tank being disposed to receive heat from the catalytic heater; a one way conduit having an inlet for receiving fluid from the tank, an outlet for delivering fluid to the tank, and a heat delivery section; a rolling diaphragm pump connected to the one way conduit for pumping heated fluid through the one way conduit from inlet to outlet, the rolling diaphragm pump being connected to the fuel gas supply to operate the rolling diaphragm pump; and a switch for switching the fuel gas supply between the rolling diaphragm pump and the catalytic heater, the switch being operated by the rolling diaphragm pump. Propane may be used as the fuel gas. Glycol may be used as the heating fluid. The gas powered heat delivery system may be used to heat oilfield equipment, for example at a well site, or items in other environments, particularly where vapors pose an explosion hazard.

Auxiliary heating systems that can supply heat to a hydrogen storage material, which may comprise at least one hydridable material, located inside a hydrogen storage tank have been developed. These auxiliary heating systems involve the catalytic combustion of hydrogen and oxygen in a catalytic heater to produce heat and combustion products. The heat produced from the catalytic combustion may then be transferred, either indirectly or directly, to the hydrogen storage material to stimulate the release of additional desorbable hydrogen that may be stored in the at least one hydrdidable material.

The invention relates to a type of fuel cell, especially a polymer-electrolyte-fuel cell. According to this invention, the fuel cell is provided with a heater (3) based on catalytic reaction heat for quickly and uniformly heating the fuel cell. This is carried out only in case of the temperature being obviously higher than the ambient temperature or it is helpful to the fuel cell allowing occurrence of electrochemical reation.

A catalytic heater with a cylindrical combustion chamber. The catalytic heater may be positioned centrally to provide heat for a number of people or an area. A reflective top is movable to along a side of the cylindrical combustion chamber for directing the heat in a desired direction. The cylindrical catalytic heater is capable of providing heat in all directions simultaneously; i.e., in a 360 degree pattern. The movable reflector permits the heat to be directed in a desired direction, providing much flexibility for the cylindrical catalytic heater.

A gas fired catalytic heater is provided that foregoes the need for an electrical heating element to provide the activation energy for the hydrocarbon catalyst pad. An alcohol self-igniting catalyst pad is used to provide the activation energy to the hydrocarbon catalyst pad thereby removing dependence of the heater on an outside electrical energy source to initiate start-up of the heater. The catalyst pad includes a flexible wash coat; a noble metal dispersed on the wash coat; an anti-sintering element saturating the wash coat; and a catalyst promoter saturating the wash coat.

This invention discloses a portable catalytic combustion heater. Fuel vapor and air are supplied to a catalyst which promotes the flameless combustion of the fuel, releasing heat. The fuel is supplied as a liquid, passes through a selectively permeable membrane such that fuel vapor exits the membrane and is fed to the catalyst. Additional features such as porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output are also shown. This invention can be used to heat apparel, blankets, food, dwellings, containers, machinery, insect attractants, humidifiers, and perfume generators.

A cleaning apparatus is disclosed and which includes a fluid dispensing tank which dispenses a cleaning fluid; a heat exchanger coupled in downstream fluid flowing relation relative to the fluid dispensing tank; a source of a combustible fluid fuel; a source of air; and a catalytic heater positioned in heat transferring relation relative to the heat exchanger, and which further is coupled in fluid flowing relation relative to the combustible fluid fuel, and wherein the catalytic heater catalytically combusts a substantially nonflammable mixture of the combustible fluid fuel and air to produce heat energy which heats the fluid dispensed from the fluid dispensing tank.

A catalytic tank heater includes a removably attached catalytic heater cartridge having catalytic material. The heater is attached to an LPG tank to position the catalytic heater cartridge to face the tank. The catalytic heater cartridge covers a plenum chamber of the catalytic tank heater. A fuel distribution header and heating element are positioned within the plenum chamber and are controlled to initiate combustion of the catalytic material to heat the tank. Vapor from the tank is provided as fuel to the catalytic tank heater, and is regulated to increase heat output as tank pressure drops. The catalytic heater cartridge can be replaced with a new cartridge while at the location of the tank on a property.

A method and fuel composition for pre-heating and / or operating a catalytic heater is described herein. In one aspect, there is provided a method of preheating a catalyst in a catalytic heater comprising the steps of: providing a preheat composition comprising greater than 60% by volume hydrogen and at least one fluid component selected from natural gas, propane, butane, refinery off gas, ethylene off gas, methanol, ethanol, butanol, liquefied biogas and mixtures thereof; and contacting the catalyst with the preheat composition for a period of time sufficient to raise the temperature of the catalyst to a one or more temperatures. In this or other embodiments, there is a fuel composition that comprises at least one component selected from natural gas, propane, butane and mixtures thereof and optionally hydrogen.

Methods and apparatus for controlling fecal odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and / or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.

A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such as fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.

The invention provides a heat supply device based on methanol catalyst heating. The heat supply device is characterized by comprising a heat exchange tube, the center of the heat exchange tube is provided with a heating pipe, a heat exchange cavity is formed between the outer walls of the heating pipe and the heat exchange tube, the upper and lower two ends of the heat exchange cavity are providedwith heat exchange mouths correspondingly, a heat exchange medium is in and out from the heat exchange mouths to perform heat exchange with the heat exchange cavity, the heating pipe is internally provided with a plurality of layers of catalytic cakes and heat storage cakes in a stacked manner, the end faces of the catalytic cakes and the heat storage cakes are provided with a plurality of ventilation holes, and the catalytic cakes and the heat storage cakes are distributed at intervals in a laminated manner, the bottom of the heat exchange tube is connected with an air fan and a methanol spray head, the methanol spray head emits atomized methanol to be blown into the heat exchange tube to contact with the catalytic cakes along with air flow, and the methanol and the catalytic cakes perform chemical reaction inside the heat exchange tube to generate heat for the heat storage cakes and the heat exchange tube. The heat supply device based on the methanol catalyst heating has the beneficial effects that in the heat supply device, a methanol catalytic heater is a flameless heating device, a generated exhaust gas after the catalytic reaction is only carbon dioxide, and the heat supplydevice based on the methanol catalyst heating is reliable to use, safe and free of pollution.

Provided is an air conditioning system that conditions the air inside the passenger compartment of an automobile mounted with a secondary battery or fuel cell that drives the wheels via a motor. Said air conditioning system comprises a catalytic heater, an air-conditioning duct, and an air-conditioning fan. The catalytic heater produces heat by supplying an oxidizing gas and a fuel to a catalyst. The air-conditioning duct is connected to an air intake and a vent, the air-conditioning fan is provided inside the air-conditioning duct, and air is circulated inside the passenger compartment. The provided air conditioning system uses the heat produced by the catalytic heater to condition the air inside the air-conditioning duct, thereby conditioning the air inside the passenger compartment. In automobiles mounted with a secondary battery or fuel cell that drives the wheels via a motor, such as electric automobiles, hybrid vehicles, and fuel cell automobiles, the provided air-conditioning system reduces the use of the power from the secondary battery or the like for heating, thereby preventing the driving range or life from decreasing and allowing efficient conditioning of air.

A cleaning apparatus is disclosed and which includes a fluid dispensing tank which dispenses a cleaning fluid; a heat exchanger coupled in downstream fluid flowing relation relative to the fluid dispensing tank; a source of a combustible fluid fuel; a source of air; and a catalytic heater positioned in heat transferring relation relative to the heat exchanger, and which further is coupled in fluid flowing relation relative to the combustible fluid fuel, and wherein the catalytic heater catalytically combusts a substantially nonflammable mixture of the combustible fluid fuel and air to produce heat energy which heats the fluid dispensed from the fluid dispensing tank.

The present invention is a method of delivering vaporized alcohol fuel through a thermally conductive porous nozzle to a catalytic burner with a plasma cavity and a surrounding porous catalytic cavity with fuel vapor and air supplied separately and inter diffusing into each other from different routes to the catalyst to achieve an efficient, steady, and complete combustion of the hydrogen bearing fuels. This heating system with passive auto thermostatic behavior, coupled to thermopiles, heat pipes and fluid heating systems may provide useful heat and electricity to applications of floors, roadways, runways, electronics, refrigerators, machinery, automobiles, structures, and fuel cells.

In an oil storage tank having an interior oil storage chamber and a tank opening in one of the boundary walls, a heating assembly is supported to extend into the interior oil storage chamber from the tank opening. The assembly includes a casing of walls surrounding with a casing mounting flange mountable in sealing engagement relative to a tank mounting flange about the full perimeter of the tank opening such that the casing protrudes into the interior oil storage chamber of the oil storage tank. The heating chamber is suitable sized and configured to operably receive a catalytic heater therein. The heating chamber further accommodates entry of combustion air and combustion fuel into the heating chamber and exhaust of emissions therefrom.

The invention discloses a combined heat and power system based on a reforming hydrogen production device and fuel cells. The system comprises the reforming hydrogen production device and the fuel cellstack; a reformed gas is conveyed to a heat supply heat exchanger; the heat supply heat exchanger provides heat for the outside; the electric energy of the fuel cell stack is outputted through an electric energy converter; a reforming electric heater and a reforming heat exchanger are arranged in the reforming hydrogen production device; the reforming electric heater is connected with the electric energy converter; electric power required for starting the reforming hydrogen production device and the fuel cell stack is provided by an external electric power source; the reforming electric heater provides heat energy for the hydrogen production of the reforming hydrogen production device; and tail gas outputted by the fuel cell stack is conveyed into a catalytic heater or conveyed into a carbon catcher provided with a compressor. The system of the invention has the advantages of high power generation efficiency, high energy utilization rate and low emission of nitrogen oxide and carbon oxide.

A gas fired catalytic heater is provided that foregoes the need for an electrical heating element to provide the activation energy for the hydrocarbon catalyst pad. An alcohol self-igniting catalyst pad is used to provide the activation energy to the hydrocarbon catalyst pad thereby removing dependence of the heater on an outside electrical energy source to initiate start-up of the heater. The catalyst pad includes a flexible wash coat; a noble metal dispersed on the wash coat; an anti-sintering element saturating the wash coat; and a catalyst promoter saturating the wash coat.