6067 results about "Tuyere" patented technology

A cyclonic cleaner which includes a cyclone unit enabling a reduction of noise generated from the cyclone unit, and reduction in pressure loss by forming a smooth air flow. The cyclone unit includes a body having an air inlet and an air outlet, a primary cyclone to primarily separate foreign matter from air drawn through the air inlet, a plurality of secondary cyclones to secondarily separate foreign matter from air discharged from the primary cyclone and to discharge the air having the foreign matter removed therefrom through discharge holes of the secondary cyclones, and a noise reduction member positioned in the discharge hole of each secondary cyclone to reduce noise. The cyclone unit also includes a guide plate to allow the air discharged through the discharge holes of the secondary cyclones to be smoothly discharged through the air outlet.

Pyrolyzing gasification system and method of use including primary combustion of non-uniform solid fuels such as biomass and solid wastes within a refractory lined gasifier, secondary combustion of primary combustion gas within a staged, cyclonic, refractory lined oxidizer, and heat energy recovery from the oxidized flue gas within an indirect air-to-air all-ceramic heat exchanger or external combustion engine. Primary combustion occurs at low substoichoimetric air percentages of 10-30 percent and at temperatures below 1000 degrees F. Secondary combustion is staged and controlled for low NOx formation and prevention of formation of CO, hydrocarbons, and VOCs. The gasifier includes a furnace bed segmented into individual cells, each cell is independently monitored using a ramp temperature probe, and provided with controlled air injection. Gasifier air injection includes tuyere arrays, lances, or both. The oxidizer includes three serially aligned stages separated by air injecting baffles, and ability to adjust the exit air temperature.

This invention relates to laser cladding of components used in high temperature-corrosive applications, such as those associated with metallurgical vessels' lances, nozzles and tuyeres, for extending their service life under such severe conditions. In particular, this invention relates to a method for applying a high melting point material onto a substrate, said substrate having a melting point temperature below the melting point temperature of the high melting point material, comprising: (a) moving a laser beam generated from a laser over the surface of said substrate, said laser beam comprised of wavelengths from about 300 to about 10,600 nanometers; (h) providing a metal, alloy, or metal-alloy composite powder to the surface of said substrate; and (c) generating sufficient power to the laser to superficially heat said substrate and to effect a fusion bond between the metal, alloy or metal-alloy composite powder and the surface of said substrate.

A range hood with a smoke deflector, comprises a body, a smoke collecting cover and the smoke deflector, wherein an air inlet is arranged on the smoke collecting cover, the smoke deflector faces to the air inlet and be in the predetermined distance from the smoke collecting cover, thus a oil smoke channel through which the oil smoke can pass is formed between the smoke deflector and the smoke collecting cover, the range hood is characterized in that the distance between the smoke deflector corresponding to the oil smoke channel and the smoke collecting cover is gradually reduced from the periphery of the smoke deflector to the air inlet. Compared with the prior art, the invention has the advantages: the smoke deflector is used for forming the wall-attachment effect, the oil smoke flow uniformly without series flow, the distance between the smoke deflector and the smoke collecting cover is gradually reduced from the periphery of the smoke deflector to the air inlet, so that the Venturi effect is formed conveniently, thus accelerating the sucking of smoke by the blower fan.

PCT No. PCT/AT97/00201 Sec. 371 Date May 15, 1998 Sec. 102(e) Date May 15, 1998 PCT Filed Sep. 12, 1997 PCT Pub. No. WO98/12359 PCT Pub. Date Mar. 26, 1998In a process for working up combustion residues and slags from waste incineration plants or steel works slags, the slag is charged at a slag layer height of above 1.2 m into a converter (1), in which the molten slag is reacted with a metal bath (4) through which oxygen is blown. The oxygen is introduced into the bath (4) for cooling the submerged tuyeres (7, 8) in the form of air or along with CO2 or water vapor.

An electronic device has at least one component that is capable of generating a quantity of heat. The electronic device further has an air-moving device and an air duct. The air moving device is capable of creating a flow of air that removes a portion of the quantity of heat. The flow of air enters the air duct. The air duct has a restriction chamber that includes a venturi vent in which the flow of air into the duct and through the restriction chamber creates a new flow of air into the venturi vent. The new flow of air into the venturi vent does not pass over the at least one component in the electronic device.

A multi-cyclone dust collecting apparatus with improved dust collecting efficiency and suction force is provided. The multi-cyclone dust collecting apparatus includes a first and a second multi-cyclone units having a first cyclone which collects large particles of dust and a second cyclone for collecting fine particles of dust; an air inlet through which an air inlet through which dust-laden air is separated and flowed into the first and the second multi-cyclone units, respectively; and an air outlet through which air from the second cyclone of the first and the second multi-cyclone units is gathered and externally discharged. Because air is branched off once it is drawn into a single gate and dust is separated from the drawn air simultaneously in the plurality of multi-cyclone dust collecting apparatuses, reduction of flow speed in the dust-laden air from the suction brush can be prevented.

Various smoke and combustible gas combustors (200, 300) are disclosed, and also disclosed are systems (100, 200) combining gas combustor with inventive burner. Such a burner (100 or 100') provides combustion of a particulate fuel such as sawdust, and many types of varying moisture content biomass fuels such as poultry litter. The combustors and burners exhibit a high turndown ratio ["TDR"].The smoke or combustible gas combustors (200, 300) are combined synergistically with such a burner (100, 100'), or combined with another suitable burner, so as to provide high temperature burner output gases to the combustor, which has coaxial inner and outer combustion chambers (352, 356) inlet tuyere(s) connected to the inner combustion chamber for introducing combustible smoke or other gases to be burned into the inner combustion chamber at one end thereof with cyclonic flow, and in which combustion air is mixed with combustible smoke or other gases to form a gas stream moving through the inner combustion chamber with cyclonic movement. A preheat tube (331) within the combustible gas heating chamber receives heated exhaust gases from the burner, and communicates with the inner combustion chamber exit through a plurality of apertures (364) for controlled flow of said heated exhaust gases into the gas stream and so heating same by mixing the exhaust gases with the stream of air and combustible gases.

A cooling unit includes a partition board, a heat exchanger, and a blower. The partition board is disposed on one of a plurality of surfaces of an electronic device so as to partition the inner and the outer side of the electronic device. The heat exchanger is disposed on the outer side so as to exchange heat generated by the electronic device with outside air. The blower is disposed on the outer side. The heat exchanger includes hot-air passage bodies and air pathways. The hot-air passage bodies include a plurality of air passages arranged side by side at predetermined intervals in such a manner as to connect a first vent and a second vent of the partition board on the outer side. The blower blows air of the inner side from the first vent to the second vent through the hot-air passage bodies.

A steam channeling structure adopted for use on a steam iron to transfer steam to perform cleaning function. The steam iron includes at least a soleplate heated to perform ironing function and at least one steam vent. The steam channeling structure includes a coupling dock and at least one cleaning tool mounted onto the coupling dock. The coupling dock has a protective portion to cover the soleplate and a steam directing portion communicating with the steam vent to direct steam discharged through the steam vent. The cleaning tool has a steam passage connecting to the steam directing portion and a steam channeling vent located in the steam passage. Steam generated by the steam iron is conveyed through the steam directing portion to the steam channeling vent to be discharged to perform steam cleaning function on a selected article.

The invention discloses a coal boiler dry-type slag discharger, which comprises a seal box sealed and connected with the slag hopper of boiler. The seal box contains a high-temperature resistant transmission band; the descending part along the direction of transmission band between the seal box and the slag hopper is arranged with a wind inlet; the seal box is arranged with a wind valve for limiting the inlet cooling air into the slag hopper, while the wind valve is between the connection of seal box and slag hopper and the wind inlet; the seal box is also arranged with a wind outlet for outputting the hot air outside the seal box; along the direction of transmission band, and at the ascending part of the connection part between the seal box and the slag hopper, a baffle device is arranged for baffling the cooling air into the slag hopper. The invention can effectively improve the amount of cooling air to cool the slag and control the amount of cooling air at the bottom of boiler to operate the boiler normally.

A simulation electric fireplace having mist, humidifying and heating functions, which includes a shell with air inlets and outlets; a heating device arranged in the shell and used for heat provision upon being powered on; an air channel arranged in the shell and communicated with the air outlet; a fan and a combustion simulation device, which are arranged in the shell, wherein air taken from the air inlet is heated by the heating device for being delivered to the air channel, wherein the simulation electric fireplace further includes a humidifying device, the air outlet includes a first air outlet for sending out the hot air and a second air outlet for sending out the humidified hot air, the air channel includes a hot air channel communicated with the first air outlet and a humidifying air channel communicated with the second air outlet, the humidifying device is arranged in the humidifying air channel for humidifying the hot air.

An improved cooling system for a computer is disclosed. In one embodiment, the improved cooling system includes an angled blower housing and a frusto-conical, centrifugal impeller. The computer chassis has a chassis air inlet and a chassis air outlet. A blower housing is disposed in the computer chassis. The blower housing has a blower inlet face spaced within 0.512 inches (1.3 cm) from a wall of the computer chassis and facing the wall. A blower air inlet is disposed on the blower inlet face and a blower air outlet is in communication with the chassis air outlet. A centrifugal impeller is rotatably supported in the blower housing about an axis of rotation to move air from the blower air inlet to the blower air outlet. The centrifugal impeller defines a generally frusto-conical profile when rotated about the axis of rotation.

The invention relates to the physical heat recovery field of solid high temperature materials. The system can be applied in the waste heat recovery of extra-large high-temperature particles such as high-temperature sintering ore and the like and the process is as follows: the high-temperature sintering ore from a sintering machine falls into a cold sinter furnace through a feeding system, gradually falls with ore discharge and enters a cooling section to radiate heat. The cooled sintering ore enters a vibrator feeder discharging system through a blanking hopper and a regulating gate. The process can be adopted to cool the sintering ore from about 700-800 DEG C to about 100 DEG C. Cold air provided by an air blower enters the cold sinter furnace through an air inlet and a blast cap, absorbs heat in the cooling section and then enters an annular channel, the high-temperature gas from the annular channel enters a waste heat boiler through a dust remover, the heat is transferred to a working medium and then pumped by the draft fan through the dust remover, and the gas is discharged in a chimney when reaching the dedusting standard. The heat-absorbing working medium (usually water) is converted to superheated steam with a certain parameter in the waste heat boiler to do work in a turbine and drive a generator to generate power. Dead steam after doing work enters a condenser and is sent back to the waste heat boiler through a circulating water pump, thus, a thermal cycle is completed.

A cooking fume exhauster with refrigerating and air-cleaning functions for exhausting cooking fume fully and lowering temp of kitchen is composed of casing, cooking fume exhausting system, refrigerating system and electric control system. The compressor, condenser and axial-flow fan of said refrigerating system are installed in the outdoor unit, and its evaporator and cross flow fan are installedin the heat exchange chamber of indoor unit.

The invention discloses an air thermalization gas burner, which comprises a burner base, a furnace ring and a burning head. The burner base is provided with an air supply port and a plurality of air nozzles as well as an air supply channel communicated with the air nozzles at external side; the air supply channel is positioned with a blower air inlet; the furnace ring, a popper and a burner base form a firebox; wherein, the furnace ring is a hollow interlayer, which is provided with a plurality of back-wind ports on the internal layer interning wall near to the port; an internal cavum of the furnace ring is communicated with the air supply channel; the blower preaches the air form the air inlet, the air supply channel and the air nozzles into the firebox and the air can burn with the gas entered from the air supply port in the firebox to heat the popper; the high temperature air can pass through the back-wind ports and then return to the firebox for burning after passing through the internal cavum of the furnace ring, the air supply channel and the air nozzles; the heat of the high temperature air can be recovered and utilized as well as sufficiently burned, thereby reducing the usage of gas and restraining the generation of gas harmful to human's health as well as deducing the pollution for environment.

The invention provides a composite surface coating for blast furnace tuyere and a preparation method thereof. The composite surface coating for blast furnace tuyere is composed of a bottom layer, a transition layer and a surface layer; wherein the bottom layer is made by Ni-based alloy material by plasma surfacing technique; the transition layer is made by NiCrAl alloy material by supersonic speed flame plating technique; the surface layer is made by mixture of ZrO2Y2O3 and Al2O3 by plasma spraying technique. As the composite surface coating is adopted for surface treatment of the blast furnace tuyere, the gradient change of linear expansibility between the coating and copper parent metal is realized; and the wearing resistance and thermal shock resistance of the blast furnace tuyere are ensured; pitting resistance is improved, the service life of the blast furnace tuyere is prolonged, the requirement of optimizing maintaining model of the blast furnace is met, stable and smooth production of the blast furnace is ensured, and equipment maintenance cost is greatly reduced.

The invention provides an ironmaking and aluminum extraction comprehensive utilization method of high-iron red mud. The method is characterized in that a blast furnace is used as main equipment; red mud is utilized to prepare micropellet composite sinter or pellet; micropellet composite sinter or pellet and coke are then treated with hot charging into the furnace layer by layer at no less than 400 DEG C; rich oxygen to full oxygen blast is employed; and tuyeres on the furnace body are increased, and reducing gas rich in hydrogen is blown into the furnace, so as to realize red mud ironmaking. At the same, calcium oxide is added during a deslagging process; the slag is treated with temperature control cooling to obtain self-pulverization calcium aluminate slag, which is leached and extracted with alumina; and sodium element is synchronously recovered from high temperature exhaust of the furnace top, so as to complete efficient separation and recycling of aluminum, iron and sodium in the red mud.

A valve for use between a vehicle fuel tank vent and a vapor recovery canister in a vehicle fuel tank containing liquid fuel, such a valve comprises: a housing having a fuel tank side and a vapor recovery canister side; and a vapor permeable membrane fixed to the housing to block the passage of liquid fuel.

A recirculation fluidized bed combustion boiler of straw is prepared as setting material feed mouth and residue extraction mouth on firepot, setting cooling device being connected to ignition combustion chamber and refeeder with secondary wind opening at bottom of firepot, using water cooling wall with top and bottom collection boxes as side wall of firepot, connecting outlet of firepot to separation device being connected to refeeder and two stages of thermo reduction devices separately, connecting one stage of thermo reduction device to a overheat unit with economizer and preheater as well as setting steam pocket and water supply pipe at top of firepot.

A multi-cyclone dust collection apparatus is disclosed that comprises a first cyclone having an air inlet, in which the air introduced into the first cyclone through the air inlet is caused to swirl and ascend in the first cyclone so that dust is separated from the air; and a plurality of second cyclones arranged around the lower part of the first cyclone, in which the air discharged from the first cyclone into the second cyclones is further caused to swirl and ascend so that dust is separated from the air. Each of the second cyclones is provided with an air outlet through which the purified air is discharged. The air inflow port is provided at the bottom of the first cyclone and the outflow ports are provided at the lower ends of the second cyclones.

The blast furnace iron-making technique includes blowing hydrogen-rich fuel gas in the blast hole of blast furnace of amount 500-1000 cu m/ton iron; normal temperature pure oxygen blasting while eliminating traditional hot blast furnace; gas in bosh containing H2 in 30-60 % except CO; gas in hearth top connecting CO+H2 in 85-95 %; and controlling the theoretic combustion temperature in 1800-2200 deg.c. The blast furnace iron-making technique can lower the blast furnace in 1800-2200 deg.c. The blast furnace iron-making technique can lower the blast furnace coke ratio to below 250 Kg/ton iron, lower CO2 exhaust by 400-600 Kg/ton iron and produce high heat value gas capable of being used as secondary energy source.

The invention relates to an environment-friendly range hood with simple structure, low cost and capable of effectively separating oil fume, which includes a chassis, a suction channel, an exhaust channel, a fan and a switch, and is characterized in that the fan is located between the suction channel and the exhaust channel Between them, the suction channel and the exhaust channel form a flue; the flue is provided with a number of cooling fins inclined downward along the air inlet direction, and the surface of the cooling fins facing away from the air inlet direction is a water tank set from top to bottom , the lower end of the water tank is connected with the water collection tank, and each cooling fin forms a row of cooling grids on the same plane along the radial direction of the flue, and there is a tuyere between adjacent cooling fins, and a leaking pipe is fixed on the upper part of the cooling fin, and the leaking pipe There are water leakage holes corresponding to the water tanks of each cooling fin; the water tank, water pump, leaking pipe, cooling fin water tank and water collection tank fixed in the chassis form a water circulation loop.

The invention relates to a low-coke-ratio blast furnace ironmaking technique. Dry coal powder is pressurized and gasified in a separate gasification furnace, the dry coal powder is injected into the gasification furnace to be sufficiently mixed with pure oxygen, burnt and gasified to produce high-temperature coal gas, the pressure in the gasification furnace is 0.3MPa to 0.6MPa, and the temperature of the coal gas at the outlet is 1300 DEG C to 1550 DEG C; the coal gas at the outlet of the gasification furnace is mixed with the purified cold coal gas at the blast furnace top, and the temperature is controlled at 900 DEG C to 1050 DEG C; the high-temperature high-reducibility hot coal gas is then injected into the lower part of the body of the blast furnace, that is, the area above the root of a cohesive zone, so that the metallization ratio of charging can reach 85 percent to 95 percent when reaching the cohesive zone; and part of the coal powder is injected from the tuyere of the blast furnace to be subjected to pure oxygen combustion. The invention, which is a novel blast furnace ironmaking technique taking dead coal and oxygen as main energy sources, can reduce the coke ratio of the blast furnace to be less than 200kg, greatly increase the productivity of the blast furnace and reduce the emission of coke-making pollutant, thus enhancing the competitiveness of the blast furnace ironmaking technique.

The invention discloses an atomizing nozzle structure of a high-temperature high-voltage air flow dyeing machine and control method thereof. The nozzle structure comprises a front nozzle cover, an inner main stream pipe, a rear nozzle head and a sleeve, wherein the sleeve is sleeved outside the inner main stream pipe, and two ends of the sleeve are respectively connected with the front nozzle cover and the rear nozzle head through a connecting piece; the sleeve is provided with an air inlet which is connected with a fan; and the sleeve and the inner main stream pipe form a circular outer chamber atomizing region; a nozzle head is arranged in the outer chamber atomizing region and is fixed on the outer wall of the inner main stream pipe, and the nozzle head is connected with a dye liquid pipeline; and the outer chamber atomizing region is provided with two outlets which are connected with a channel through which the cloth to be dyed passes in the inner main stream pipe. The invention also provides a control method based on the atomizing nozzle structure of the high-temperature high-voltage air flow dyeing machine. According to the types of the cloth to be dyed, the number of the nozzle heads started in the nozzle structure, the flow rate of the nozzle heads, the air flow of the fan and the temperature process curves adopted are defined. According to the invention, the levelling property is high, and the problem of cloth blocking can not happen.