50results about How to "Stable combustion flame" patented technology

High intensity combustion and low intensity combustion are carried out together, to stabilize flames and to hold down the emission of carbon monoxide. An air-fuel mixture outlet member (back plate) that includes a single or a plurality of outlet(s) (air-fuel mixture outlet(s)) out of which an air-fuel mixture (GA) flows is include, and a metal fiber knitting body (metal knit) that covers the air-fuel mixture outlet member is included. Therefor, the air-fuel mixture, which is made to flow out of the outlet(s), passes through the metal fiber knitting body (metal knit) and is combusted, a flame of low intensity (flame) is generated together with a flame of high intensity (flame) by combustion of the air-fuel mixture, and the flame of low intensity holds the flame of high intensity.

The invention relates to a top-intake burner of a gas cooker. The top-intake burner comprises a burner support, a fire distribution seat and fire caps. The top-intake burner is characterized in that the burner support is combined by an lower support and an upper cover, at least two Venturi ejector pipes are formed, the openings of the Venturi ejector pipes are correspondingly communicated with primary air inlets with an upward opening, a single gas nozzle is mounted in the primary air correspondingly and is disposed right against the center of one of the the Venturi ejector pipes, the other end of the gas nozzle is communicated with a gas inlet pipe, one Venturi ejector pipe is communicated with a fire distribution chamber of the fire distribution seat through one gas guide pipe or multiple gas guide pipes, and an air passage is reserved between the upper cover of the burner support and the fire distribution seat. The top-intake burner is reasonable in structural design, efficient and energy saving, is capable of realizing precision supply of primary and secondary air and complete and stable burning of the gas, and is especially suitable for embedded household gas stoves.

The invention discloses a method for preparing a core-shell TiO2 / SiO2 nano composite grain, using titanium tetrachloride, silicon titanium tetrachloride, hydrogen gas and air as raw materials, putting them into various links of a premixing combustion reactor for hydrolyzation reaction at 1200-2500 deg.C. And the produced grain is 20-80 nm sized, amorphous SiO2 relatively uniformly coats the crystalline TiO2 grain, where the coating is 2-30 nm thick, and size of TiO2 core and thickness of coating SiO2 can be regulated by variation of process parameters. And the process device is simple, convenient to operate, and stable to run, and able to continuously prepare the grain.

The invention discloses a low-heating-value / low-pressure gas combustor, and belongs to the technical field of industrial gas combustor combustion. The technical problem about reduction of NOx emission of a boiler and a heating furnace combusting low-heating-value / low gas supply pressure industrial tail gas is solved. The low-heating-value / low-pressure gas combustor is characterized in that a center air pipe, a primary air channel, a gas channel, a secondary air channel and a tertiary air channel are sequentially and coaxially arranged from interior to exterior; primary air flowing through the primary air channel is swirling air, a plurality of inward jetting inner gas nozzles and a plurality of outward jetting outer gas nozzles are arranged at the front end portion of the gas channel; air flowing through the secondary air channel is direct current air; tertiary air flowing through the tertiary air channel is swirling air, the amount of gas jetted by the inner gas nozzles is 5%-35% of the total gas amount, and the volume of air jetted by the primary air channel is 1%-15% of the total air volume. The low-heating-value / low-pressure gas combustor is simple in structure, the classified combustion method and the thick and thin combustion method are coupled, combustion is complete, flames are stable, low NOx emission is achieved, and various low-heating-value / low-pressure gas combustors are adopted.

The invention discloses an atmospheric gas radiation heating device which comprises a burner, a quartz glass radiant tube and an igniter, wherein the burner comprises a nozzle, an injection tube and a burner head part; the burner head part consists of an inner tube and an outer tube which are concentric, and one end of an annular belt between the inner tube and the outer tube is sealed; the injection tube is communicated with the annular belt; the end of the sealed annular belt of the inner tube is a secondary air inlet, while the other end of the inner tube is provided with an inner flame cover; a corresponding end of the outer tube is provided with an outer flame cover, and a flame hole is formed between the inner flame cover and the outer flame cover; and the inner tube is internally provided with a secondary air conditioning device. The invention has simple structure, convenient mounting, low manufacture and maintenance cost, high burning strength, long service life and large burner load regulation ratio, can meet the requirement of different heating powers to a larger extent and can be widely applied to industrial kilns of the industries of steel, petrochemical industry, machinery, building materials, boilers, waste incineration, and the like.

The invention discloses a burner which is high in burning efficiency, stable in burning, simple in structure and low in cost. At least two outer ring ejector pipes (7) are arranged on a burner base (1), each outer ring ejector pipe (7) is communicated with a combustion air mixing chamber (8) inside the burner base (1), an outer ring nozzle (9) is arranged on the periphery of each outer ring ejector pipe (7) in a matched mode, a center nozzle (6) is defined by a center mixing cavity (10), a gap is reserved between the upper edge of the center mixing cavity (10) and the lower edge of a center burner cap (4), the center burner cap (4) and an outer ring burner cap (5) are respectively provided with a flame stabilizing groove (12) which is used for communicating the interior and the exterior, and two parts, located on the upper portion and the lower portion of the flame stabilizing grooves (12), on the center burner cap (4) and the outer ring burner cap (5) are connected through a plurality of reinforcing ribs (13). The burner can be applied to the field of cooking utensils.

The invention provides a multi-spray-nozzle bulky combustion low-NOx gas combustor, which comprises a heat insulation tile, a first-stage combustor, a second-stage combustor, a first-stage fuel distribution pipe and an air box, wherein a first passage and a second passage are arranged on the heat insulation tile, the lower end of the heat insulation tile is connected with the upper end of the air box, in addition, the first passage is communicated with a cavity of the air box, the first-stage fuel distribution pipe is arranged in the first passage and the cavity of the air box, the second-stage combustor is arranged in the second passage, the top end of the first-stage fuel distribution pipe is provided with a hemispherical sealed surface, the tail end of the first-stage combustor is arranged on the hemispherical sealed surface, and in addition, the inside of the first-stage fuel distribution pipe is communicated with the inside of the first-stage combustor. The multi-spray-nozzle bulky combustion low-NOx gas combustor technically synthesizes fuel grading, smoke gas recirculation and multipoint bulky combustion control techniques, and has the characteristics that long flame in multipoint bulky combustion can be formed, the peak temperature of the combustion flame is reduced, the distribution of heat loads in a furnace is uniform, and the generation amount of NOx is ultralow.

The invention discloses a decoupling gas burner, and belongs to the technical field of combustion equipment. The decoupling gas burner comprises an outer cylinder body, a separation cylinder body, a gas outer cylinder body and a gas inner cylinder body which are sequentially arranged from outside to inside and coaxial, a first-stage air duct is formed in the gas inner cylinder body, a gas channelis formed between the gas inner cylinder body and the gas outer cylinder body, a second-stage air duct is formed between the gas outer cylinder body and the separation cylinder body, a third-stage airduct is formed between the separation cylinder body and the outer cylinder body, the decoupling burner further comprises a frustum-shaped cylinder body, the small-diameter end of the frustum-shaped cylinder body is connected to the end, which extends into a hearth, of the separation cylinder body, the outer diameter of the large-diameter end of the frustum-shaped cylinder body is smaller than theinner diameter of the outer cylinder body, and in the axial direction of the frustum-shaped cylinder body, the distance between the end, which extents into the hearth, of the outer cylinder body andthe large-diameter end of the frustum-shaped cylinder body is adjustable. According to the provided decoupling gas burner, the frustum-shaped cylinder body is arranged so that the decoupling gas burner can be suitable for different gas and hearth structures.

The invention relates to a magnetic electrode small-particle-size hydroxide ion generator. The magnetic electrode small-particle-size hydroxide ion generator comprises a raw material air supply channel, a cathode insulation fixation plate, a tunnel cylinder and an anode insulation fixation plate, wherein the cathode insulation fixation plate, the tunnel cylinder and the anode insulation fixation plate form a sealing cavity, the raw material air supply channel passes through the cathode insulation fixation plate and communicates with a cathode selection network inside the tunnel cylinder through a cathode conductive ring, the other end of the cathode selection network is connected with one end of an anode selection network, the other end of the anode selection network is fixed on the anode insulation fixation plate, an anode discharge needle is also fixed on the anode insulation fixation plate, the anode discharge needle is connected with a pulse high-frequency discharger, and the top portion of the tunnel cylinder is provided with a hydroxide ion air channel. Small-particle-size air negative ions prepared by use of the generator are widely applied, and since a prepared gas contains numerous negative hydrogen, oxygen ions and free electrons and is segmented and magnetized into small particle sizes, the magnetic electrode small-particle-size hydroxide ion generator can be widely applied to a health care industry, a medical industry and industrial combustion and machine combustion industries.

A method for burning low oxygen and high temperature air includes entering air into recuperative heat exchanger to be preheated, mixing it with high temperature smoke sent from ceramic check valve to form it to be low oxygen high temperature air being sent into firepot, carrying out volume-form combustion being able to be controlled at firepot, exhausting partial smoke out to ambient through smoke flow rate regulation valve after sensible heat of smoke is released at heat exchanger.

The invention discloses a biomass tar combustion system and method, belongs to the technical field of biomass pyrolysis, and aims to solve the problem that pyrolysis oil of pyrolytic carbon gas-oil co-production engineering. The biomass tar combustion system comprises a pyrolysis reaction furnace, a gas-liquid separator, an oil-water separator, a pyrolysis gas buffer tank and a combustor, whereinthe pyrolysis reaction furnace is connected with the gas-liquid separator; the lower end of the gas-liquid separator is connected with the oil-water separator; the upper end of the gas-liquid separator is connected with the pyrolysis gas buffer tank; the oil-water separator is connected with the combustor; and the output end of the combustor is connected with the pyrolysis reaction furnace. The centralized biomass pyrolysis tar combustion system in an embodiment of the invention is simple in technological process and is convenient to operate. A continuous pyrolysis oil-gas cofiring system in another embodiment takes pyrolysis gas as a main combustion material, tar only serves as a combustion-supporting material and is sprayed into the system, combustion is sufficient, fire cut can be avoided, and flue gas discharge reaches the standard easily.

The invention relates to the field of safety and environment protection for industries such as oil and gas exploration and petrochemical engineering, in particular to a safe and environment-friendly flare system based on a fire whirlwind vortex generating mechanism. The safe and environment-friendly flare system comprises a fire whirlwind vortex generating device, a flare head and a flare barrel. The fire whirlwind vortex generating device is arranged on the upper portion of the flare head through a fixing device and composed of a hollow cylinder and a plurality of flow guiding plates, and the flow guiding plates are arranged between the hollow cylinder and the fixing device. A plurality of supporting bars extend upwards from the fixing device, the bottom ends of the supporting bars are connected with the fixing device, and the top ends of the supporting bars are connected with the hollow cylinder. The flow guiding plates are arranged on the supporting bars one to one.

The invention discloses gas water heating equipment with an expansion gas box. The equipment comprises a combustion chamber, a combustor, a heat exchanger and a water supply pipeline, wherein the combustor and the heat exchanger are arranged in the combustion chamber, and the water supply pipeline is connected with the heat exchanger; and the equipment is characterized in that the combustion chamber is connected with the expansion gas box, the expansion gas box comprises a box body and an elastic film arranged in the box body, the elastic film divides an inner cavity of the box body into a gaschamber and a pre-inflation gas chamber, the gas chamber communicates with the combustion chamber, and gas fills the pre-inflation gas chamber in advance. The combustion chamber of the fuel gas waterheating equipment communicates with the expansion gas box, so that the pressure in the combustion chamber is always in dynamic balance, pressure sudden change in the combustion chamber caused by gearshifting combustion or unstable air pressure is effectively avoided, flame stability is guaranteed, combustion is sufficient, meanwhile, combustion flame is stable, combustion vibration and combustion noise are not easy to generate, and therefore it is guaranteed that the whole equipment does not generate howling and noise.

The invention discloses a lamination type fire hole assembly. The fire hole assembly comprises multiple lamination pieces laminated and stacked, the front face of each lamination piece is provided with multiple protrusion parts with consistent orientations, the positions, corresponding to the protrusion parts, of the back face of each lamination piece are provided with inward concave parts, and the protrusion parts and the inwards concave parts on the adjacent lamination pieces correspond to one another. Through the fire hole assembly of the structure, the longitudinal depth is large, losses caused by long-term combustion sublimation cannot affect the size change of a fire hole, a sheet on the non fire hole position achieves the flame stabilizing effect, and the combustion flames are morestable; in addition, through the fire hole assembly of the structure, the service life of a gas combustor is prolonged, the problem of deterioration of waste gas emissions after long-term combustion can be solved, meanwhile, the stable combustion section of the gas combustor can be expanded, tempering of the gas combustor and the floating-flame probability can be reduced, and a gas stove product of the gas combustor with the fire hole assembly is more environment-friendly.

The invention discloses a burner single piece. The burner single piece comprises a fire grate shell with an ejector tube and an upper opening, and a burning plate arranged on the upper opening, a strip-shaped fire hole is formed in the burning plate and is characterized in that at least one row of round auxiliary fire holes are formed in the two sides of the strip-shaped fire hole correspondingly; two rows of auxiliary fire holes are additionally formed in the two sides of the strip-shaped fire hole and a width value of a top plate of the burning plate is increased, so that the total area of the fire holes is increased, therefore the heat intensity and the noise of the fire holes are reduced, meanwhile, auxiliary flame is provided by the auxiliary fire holes, and the flame stabilizing effect is achieved for the burn; two side plates of the burning plate and two inclined plates of the top plate are flexibly applied with an inclined surface design, so that the flow resistance loss is reduced, the distribution of the outlet pressure is more uniform, and burning flame is more stable; and meanwhile, the inclined surface design can be adapted to different the width sizes of the fire holes and flow channels.

The invention discloses a fire grate single body, a combustor and a water heater. The fire grate single body comprises a flame piece arranged at the top, multiple sets of fire hole structures are arranged in the length direction of the flame piece, each set of fire hole structure comprises a main fire hole formed in the top face of the flame piece, first protruding structures are arranged between the adjacent main fire holes, the first protruding structures and the adjacent main fire holes are arranged at intervals, and the first protruding structures are higher than the flame piece. According to the fire grate single body, the main fire holes are formed in the flame piece, the first protruding structures higher than the flame piece are arranged between the adjacent main fire holes, the structure of the fire grate single body is simplified, each main fire hole is formed between the two corresponding adjacent first protruding structures, main flames are stable, fuel gas can be fully combusted in the main fire holes, the utilization rate of the fuel gas is improved, and the emission of waste gas is reduced.

The invention discloses a combustion system of a high-power capacity type gas water heater and a combustion method thereof. The combustion system comprises an air inlet and a smoke outlet, a channel from the air inlet to the smoke outlet is a single communication channel which is internally provided with at least one combustor, at least one primary air channel, at least one combustion space, at least one secondary air channel, and secondary combustion spaces, wherein the combustor is internally provided with the primary air channel used for introducing the air into the combustor to mix with fuel gas in the combustor to generate primary mixed gas, the combustion space is used for the primary mixed gas of the combustor to combust to generate at least a primary flame, the air guide direction of the secondary air channel points to the periphery of each primary combustion space, and air in the secondary air channel supports the primary flame through the secondary combustion spaces. The combustion system is characterized in that the single communication channel is internally further provided with an air supplement channel internally provided with an air distribution device, wherein the air guide direction of the air supplement channel points to the peripheries of all the secondary combustion spaces. The method can guarantee the complete combustion of fuel gas under the condition with smaller air quantity, with stable combustion, and compared with the prior art, a combustion vibration area is obviously reduced.

The invention discloses a mine brine pretreatment method. The method comprises the following steps: introducing water by virtue of a brine inlet main pipe, separating the inflow water into two parts, namely brine and associated gas by virtue of a moisture separator, conveying the brine into a salt making workshop for salt manufacturing, and conveying the associated gas to a waste gas combustion device for combusting. The method is characterized in that before the associated gas is conveyed into the waste gas combustion device, the moisture mixed in the associated gas is separated and returns into the salt making workshop, so that the combustion effect of the waste gas combustion device is guaranteed, and the brine utilization rate is improved. The method disclosed by the invention has the advantages that the brine separation degree is high, the brine utilization rate is high, the separated associated gas is full in combustion, the combustion flame is stable, flameout is difficultly caused, repeated ignition of workers is avoided, the operational risk coefficient of the workers is reduced, the condition that the environmental pollution is caused due to overflow of the associated gas is avoided by virtue of closed brine extraction, and the like.

The invention discloses a swirl less-gas pulverized coal burner. The swirl less-gas pulverized coal burner comprises a fuel gas burner, a pre-burning chamber, a burning chamber, an inner secondary air device, an outer secondary air device, and an air bellow. The axis of the burning chamber, the axis of the pre-burning chamber, the axis of the inner secondary air device, the axis of the outer secondary air device, and the axis of the air bellow are all superposed. The inner secondary air device is arranged outside the burning chamber; the outer secondary air device is arranged outside the inner secondary air device; all the previous three devices are arranged inside the air bellow. In the swirl less-gas pulverized coal burner, the pulverized coal can be ignited by consuming little gas without consuming fuel oil. The swirl less-gas pulverized coal burner is simple in structure and convenient in maintenance. The gas is easily ignited and is of a high burning temperature for igniting various types of coals, accordingly the swirl less-gas pulverized coal burner has a wider application range on the coals. The fractional combustion can be achieved with a low nitric oxide production.

The invention discloses a combustor and a gas water heater with the combustor. The combustor comprises fire grates. A mixing cavity is limited in each fire grate, and the fire grates are provided withgas inlets communicating with the mixing cavities, main gas outlets and auxiliary gas outlets. Each fire grate comprises a first sheet, a second sheet and a partition plate. Each second sheet and thecorresponding first sheet are arranged oppositely and define the corresponding mixing cavity. Each partition plate is arranged between the corresponding first sheet and the corresponding second sheet, the two sides of each partition plate are connected with the corresponding first sheet and the corresponding second sheet respectively, the main gas outlets are formed on the partition plates, and the auxiliary gas outlets are defined by the partition plates and at least one in the first sheets and the second sheets. According to the combustor disclosed by the embodiment of the invention, the auxiliary gas outlets located on one sides of the main gas outlets are defined by the partition plates and at least one in the first sheets and the second sheets, the area of the gas outlets can be increased, heat loads can be improved, and the quality and the use index of the gas water heater can be improved easily.

The invention discloses a pilot flame system of a heat accumulation type combustion system and the heat accumulation type combustion system and a switching method. The pilot flame system comprises two pilot flame burner bodies matched with heat accumulation type combustors in pair, wherein each pilot flame burner body is communicated with a corresponding heat accumulation type combustor through an independent air supply tube; the two air supply tubes are communicated through a serial connection tube; each pilot flame burner body comprises an inner tube, an outer tube sleeving the inner tube, and an ignition device; a one-way valve is mounted on each air supply tube. The switching method comprises the following steps: when the first heat accumulation type combustor is in a combustion state, keeping a first one-way valve matched with the first heat accumulation type combustor being in an opened state, keeping the second heat accumulation type combustor being in a smoke discharge state, and keeping a second one-way valve matched with the second heat accumulation type combustor being in a closed state. The pilot flame system has the characteristics of being simple in structure, good in energy saving effect, stable to work, simple and convenient to mount and repair, and the like.

A swirl-type internal flame recirculation burner apparatus and method as used to fire asphalt plant aggregate dryers, air heaters and calcining kilns and method includes a compressed air oil atomizer assembly. The burning and swirling fuel and primary main combustion air mixture recirculates upstream along the burner axis. The secondary main combustion air may be swirled. The burner may also be fired on gas or a combination of gas and oil.

The invention discloses a stove for combined combustion of liquefied petroleum gas and methanol. The stove is mainly composed of a stove body, a heat preservation layer enclosed on the surrounding of the stove body, a copper pipe wound on the outer wall of the stove body and a stove core combustion chamber arranged at the center of the stove body, wherein the lower end of the stove core combustion chamber is connected with a liquefied petroleum gas hose, and a gas control valve is arranged on the liquefied petroleum gas hose; a methanol gas pipeline inlet is also formed in the lower end of the stove core combustion chamber, and a gas combustion spray head is arranged on the end part of the stove core combustion chamber; the starting end of the copper pipe wound on the outer wall of the stove body is connected with a methanol liquid conveying pipe, the tail end of the copper pipe wound on the outer wall of the stove body is connected with a methanol gas conveying pipe, and the other end of the methanol gas conveying pipe is connected with the methanol gas pipeline inlet in the stove core combustion chamber. The stove disclosed by the invention is both used as a common liquefied petroleum gas stove and a methanol stove to realize dual purpose of the stove so as to fully save the energy source, and the combustion efficiency of fuels is high; meanwhile, when methanol gas is burnt, the flame of the stove is stable, the flame helically ascends, and the stove is free of odor or pollution, low in manufacturing cost and convenient to install and use.

The invention discloses an atmospheric gas radiation heating device which comprises a burner, a quartz glass radiant tube and an igniter, wherein the burner comprises a nozzle, an injection tube and a burner head part; the burner head part consists of an inner tube and an outer tube which are concentric, and one end of an annular belt between the inner tube and the outer tube is sealed; the injection tube is communicated with the annular belt; the end of the sealed annular belt of the inner tube is a secondary air inlet, while the other end of the inner tube is provided with an inner flame cover; a corresponding end of the outer tube is provided with an outer flame cover, and a flame hole is formed between the inner flame cover and the outer flame cover; and the inner tube is internally provided with a secondary air conditioning device. The invention has simple structure, convenient mounting, low manufacture and maintenance cost, high burning strength, long service life and large burner load regulation ratio, can meet the requirement of different heating powers to a larger extent and can be widely applied to industrial kilns of the industries of steel, petrochemical industry, machinery, building materials, boilers, waste incineration, and the like.

The invention discloses a burner for a gas water heater and the gas water heater provided with the same. The burner for the gas water heater comprises a body and an enhanced mixing and preheating structure. The body is provided with a gas inlet and a gas outlet. The gas outlet comprises at least one gas outlet hole. The enhanced mixing and preheating structure is arranged on the side, far away from the center of the body, of the gas outlet. The enhanced mixing and preheating structure is arranged to make gas flow sprayed from the gas outlet and air surrounding the gas outlet mixed and preheat the gas flow by smoke generated by combustion of the burner. According to the burner for the gas water heater, the enhanced mixing and preheating structure is arranged at the gas outlet, gas can easily entrain surrounding air like secondary air, gas and secondary air can be fully mixed easily, gas can easily entrain smoke generated due to combustion to preheat mixed gas of gas and air or gas flow before mixing, so energy can be fully used, and energy consumption of the burner is reduced.

A fuel-activating substance comprising a fuel-activating material and having heat resistance imparted thereto. This fuel-activating substance can hence be applied or attached even to parts to be used under such temperature conditions that use with organic resin binders has been impossible, whereby the effect of saving energy in combustion devices is further heightened. The heat-resistant fuel-activating substance is characterized by being obtained by melt-mixing 50-150 wt. % metallic thermal spray material with 100 wt. % fuel-activating material of which the spectral emissivity for electromagnetic waves with wavelengths in the range of 3-20 μm is 0.85 or more and making the mixture capable of thermal spraying. Alternatively, 100 wt. % the fuel-activating material and 50-150 wt. % metallic material having a melting point of 420° C. or lower may be formed into a sheet through melting. Furthermore, a mixture of 100 wt. % the fuel-activating material and 75-150 wt. % inorganic resin having a heat resistance temperature exceeding 300° C. may be formed into a sheet or may be subjected to thermal spraying or applied in a molten state.

A combustion flame stabilizer assisted by discharging plasma comprises a high-voltage electrode, a mixing cavity is formed in the high-voltage electrode, and an air inlet is formed in the outer wall side of the high-voltage electrode. An opening formed in the upper side is an air outlet, a quartz tube is arranged on the lower side, a copper ring ground electrode is fixed into the cavity through aquartz tube, an annular hydrocyclone is mounted at the position, above the copper ring ground electrode, of the inner wall of the high-voltage electrode, and a plurality of center current guide columns are formed in the position, corresponding to the annular hydrocyclone, in the high-voltage electrode. According to the flame stabilizer, gas fuel canbbe subjected to motivation, dissociation, ionization and other actions to generate the plasma, a large number of chemical active particles are included, the flame stabilizer can work at low oxygen and low pressure, and the combustion efficiency ofa combustor is further improved; by means of the structure, the energy exchange rate of gas backflow can be increased, and therefore the stability of flames is improved.

A method for burning low oxygen and high temperature air includes entering air into recuperative heat exchanger to be preheated, mixing it with high temperature smoke sent from ceramic check valve to form it to be low oxygen high temperature air being sent into firepot, carrying out volume-form combustion being able to be controlled at firepot, exhausting partial smoke out to ambient through smoke flow rate regulation valve after sensible heat of smoke is released at heat exchanger.