59results about How to "Fully stable combustion" patented technology

The invention discloses a small-sized annular combustion chamber with high-capacity heat intensity, which comprises a combustion chamber casing, an oil supply component, an outer flame tube, an inner flame tube, a high-pressure turbine guider, an oil thrower wheel and an igniter, wherein the oil supply component is fixed on the combustion chamber casing; and the outer flame tube, the inner flame tube and the high-pressure turbine guider are fixedly connected with the combustion chamber casing. As an oil thrower wheel type baffling combustion chamber is adopted by the annular combustion chamber, and a radial combustion way is used, the axial size of the combustion chamber can be reduced, the size of the combustion chamber is reduced, and the heat capacity intensity of the combustion chamber can be effectively improved.

The invention discloses an emergency released-torch burner which comprises a nozzle pipe, the nozzle pipe is connected with a torch barrel by a flange, the upper end of the nozzle pipe is connected with a mixer, the top end of the mixer is provided with a flame holder, a windshield is arranged above the mixer, a firing barrel and an incandescent light which are supplied gas respectively through a fuel gas pipe thereof are arranged in the windshield, and a position close to the incandescent light is provided with a flame monitor. The emergency released-torch burner disclosed by the invention is simple in structure, easy to use, and reasonable in design; by using the burner, a torch system can satisfy the requirements of safe releasing under the conditions that the torch system starts and stops working and is in accident states and unstable working conditions; the burner is reliable in ignition, stabile and full in combustion, and uneasy to produce black smoke; and the incandescent light is not easy to go out, therefore, the service life of the emergency released-torch burner is prolonged, and the emergency released-torch burner is small in maintenance quantity, and uneasy to be damaged by people.

The invention relates to a three-dimensional hierarchical air supply combined waste incinerator, in particular to a waste incinerator. The waste incinerator provided by the invention solves the problems of single function and narrow application range of the traditional waste incinerator. In the waste incinerator provided by the invention, the lower end of a feeding device is communicated with one end of a rotary drying pyrolysis device; the other end of the rotary drying pyrolysis device is communicated with a grate type incinerator; the feeding device and the rotary drying pyrolysis device are fixedly installed on a first bracket; two groups of secondary air spray pipes are both communicated with a secondary air main pipe; one group of the two groups of secondary air spray pipes is positioned above a rear arch and arranged on the outer side wall of a rear wall, and the other group of secondary air spray pipes are arranged at the lower end of a front wall; each group of secondary air spray pipes is communicated with a hearth; a high-temperature smoke interface is communicated with a horizontal flue through a pipeline; an intermediate-temperature smoke interface is communicated with a tail flue through a pipeline; and an air interface is communicated with the air outlet of an air preheater through a pipeline. The waste incinerator provided by the invention is used for incinerating waste.

The invention discloses a system for pyrolyzing and burning sludge at low temperature, which comprises a sludge hopper, a dryer, a spiral conveyer, a low-temperature pyrolysis reactor, an extrusion moulding machine, an incinerator and a draught fan, wherein the spiral conveyer is used for conveying the sludge output from the sludge hopper to a feed inlet of the dryer; the low-temperature pyrolysis reactor is connected with a discharge port below the dryer; the extrusion moulding machine is connected with the discharge port of the low-temperature pyrolysis reactor; the incinerator is connected with the extrusion moulding machine through a conveyer and is provided with a waste heat boiler; the draught fan is connected with the waste heat boiler; and the upper part of the waste heat boiler is respectively connected with the dryer and the low-temperature pyrolysis reactor through waste heat input pipelines. After the dewatered sludge is dried and pyrolyzed at low temperature, the amount of the sludge entering the incinerator is reduced, thereby reducing the volume of the incinerator, greatly lowering the energy consumption and reducing the investment cost; the cost of manufacture, installation, operation and maintenance of an incinerator system is greatly reduced; and because the equipment investment is reduced, the system is convenient for dispersive treatment of sludge and has wide adaptability.

The invention relates to a pulverized coal burner, discloses a pulverized coal burner for a four-corner tangential burning and W-type flame burning pulverized coal boiler, and specifically discloses a vertical rich-lean separated pulverized coal burner. The rich-lean separated pulverized coal burner is characterized in that the two sides of the inner wall of a burner inlet elbow are provided with a fixed separating link stopper I and a fixed separating link stopper II, the two sides of the circumference section inner wall of a burner inlet are provided with fixed separating link stoppers III, and a pulverized coal concentrator is internally connected with an adjustable link stopper through a rotating shaft; and the inclination angle (alpha 1) between the fixed separating link stopper I and the inlet elbow is 5 degrees to 45 degrees, the length (L1) of an inclined plane of the fixed separating link stopper I is 30-200 mm, and the inclination angle (alpha 2) of the fixed separating link stopper II is 5 degrees to 45 degrees. The rich-lean separated pulverized coal burner provided by the invention has the positive effects that the structure is simple, the cost is low, the operation and use are rapid, the installation and disassembly are convenient and accurate, and the rich-lean separated pulverized coal burner has the advantages of being safe and reliable, low in NOX discharge, efficient in burning and long in service life, and preventing scorification and high-temperature corrosion.

The invention discloses a multifunction coal dust combustor of the technical field of road construction and maintenance machinery, comprising a traveling chassis, a combustion furnace, an air and coaldust regulating mechanism, a drive mechanism, a blower, an automatic ignition device and an electric control system, wherein the air and coal dust regulating mechanism consists of an electromotion air valve, a pipeline, a flap valve and a Venturi pipe; an air outlet is connected with the combustion furnace; the pipeline comprises an automatic ignition device channel, a dense coal dust channel, athin coal dust channel, a secondary air channel and a third air channel which are arranged in sequence from inside to outside; the outlet end of the dense coal dust channel is connected with the Venturi pipe; the outlet of the Venturi pipe is provided with a bluff body; and the flap valve is arranged on the inlet ends of the dense coal dust channel and the thin coal dust channel. The multifunctioncoal dust combustor has high degree of automation, sufficient combustion and high efficiency, thereby lowering demands on coal quality, and long service life and can realize the functions of automatic rotation of a combustion chamber, automatic travel of the whole combustor, automatic ignition, air oil automatic regulation and temperature automatic control.

The invention relates to an industrial coal powder boiler which is characterized by comprising a transversely arranged cylindrical boiler casing, wherein a front end plate and a back end plate are respectively arranged at the front part and the rear part in the boiler casing; two precombustion chambers abreast and axially penetrate the middle part of the front end plate, the outlet ends of the two precombustion chambers are respectively communicated with ends of two horizontal boiler flues abreast and transversely arranged in the boiler casing and other ends of the two boiler flues are respectively communicated with the back end plate; a front smokebox is formed between the front end of the boiler casing and the front end plate, the rear end of the boiler casing and the back end plate are divided into an upper part and a lower part through a partition board and a rear smokebox and a smoke collection chamber are respectively formed at the lower part and the upper part; a water wall circuit is vertically arranged in the rear smokebox and a chimney is communicated at the top of the smoke collection chamber; and a group of two-pass smoke pipes communicated with the front smokebox and the rear smokebox is axially arranged at the lower parts in the middles of the two boiler flues and a group of three-pass smoke pipes communicated with the front smokebox and the smoke collection chamber is axially arranged at the upper parts of the two boiler flues. The invention can be widely used in any situation where the small and medium-sized industrial coal powder boilers are required.

The invention relates to a miniature liquid fuel combusting device, and discloses a cylindrical porous jetting-type miniature liquid combustor. The cylindrical porous jetting-type miniature liquid combustor comprises a combustion chamber, an upper sealing plate, a lower sealing plate and an air inlet pipeline, the upper sealing plate and the lower sealing plate are used for sealing the combustionchamber, the combustion chamber is provided with a first air inlet and a second air exhaust, and one end of the air inlet pipeline penetrates through the first air inlet and extends into the combustion chamber; the combustion chamber is internally provided with a feeding pipeline and a cumbustor body, one end of the feeding pipeline is located inside the combustor body, the bottom of the combustorbody is connected with the middle of the feeding pipeline, and the other end of the feeding pipeline penetrates through the lower sealing plate. The invention further provides a combustion method ofthe cylindrical porous jetting-type miniature liquid fuel combustor. The miniature liquid fuel combustor and the combustion method thereof have the advantages that the superficial area of liquid fuelis increased, so that the liquid fuel is sufficiently mixed with air, and meanwhile, evaporation of the liquid fuel is accelerated at the same time so that combustion can be stably and efficiently conducted.

The embodiment of the invention provides a water-cooling gas furnace core and a vacuum gas-fired hot water boiler comprising the same. The water-cooling gas furnace core comprises a first clamping flange, a heat exchange tube cluster and a second clamping flange, the heat exchange tube cluster is arranged between the first clamping flange and the second clamping flange to jointly form a wall face restraining smoke circulation, the heat exchange tube cluster at least comprises a first heat exchange tube cluster and a radiation heat dissipation tube cluster, and the first heat exchange tube cluster and the radiation heat dissipation tube cluster are arranged on the wall face. And a heat exchange medium is packaged in the heat exchange tube cluster. According to the embodiment, the average heat exchange coefficient can be increased, deep cooling of high-temperature flue gas is achieved, ultralow NOx emission is guaranteed, and meanwhile the heat utilization efficiency is greatly improved.

The invention relates to a nozzle of a straw burner. The nozzle is composed of a high-temperature resisting nozzle head, a nozzle outer barrel and a water jacket inner barrel. The water jacket inner barrel is concentrically sleeved with the nozzle outer barrel. Cyclone flow deflectors are mounted in an annular gap between the end, close to the high-temperature resisting nozzle head, of the water jacket inner barrel and the nozzle outer barrel. According to the nozzle of the straw burner, the designed water jacket inner barrel can be used for reducing requirements for the material of the nozzleinner barrel, and the fire spray temperature of the nozzle can be made higher.

The invention discloses a circulating fluidized bed/bubbling fluidized bed coupled pressurized oxygen-enriched combustion device. The circulating fluidized bed/bubbling fluidized bed coupled pressurized oxygen-enriched combustion device comprises a circulating fluidized bed/bubbling fluidized bed coupled hearth, an air chamber, an air distribution plate, a cyclone separator, a return feeder, an external heat exchanger, a buried pipe heating face and a screen type heating face; the hearth adopts graded air supply and graded coal supply, the buried pipe heating face is arranged in the dense-phase zone, a lean-phase zone outlet is connected to the cyclone separator, the cyclone separator is used for separating solid materials in smoke gas in the hearth outlet, and the materials enter the return feeder and the external heat exchanger. The device is suitable for combustion of solid fuel under pressurizing and high inlet oxygen concentration, and advantages of a bubbling fluidized bed and acirculating fluidized bed can be achieved. The buried pipe heating face with the high capacity utilization rate is arranged on the bubbling and fluidizing area of the lower portion of the hearth, thelimited arrangement of the heating face can be effectively solved, and through graded coal supply, graded air supply and graded return feeding, the furnace temperature and in-furnace temperature distribution can be effectively controlled.

The invention provides a method for screening equivalence ratios of combustion gas of a foamed ceramic burner. The method includes the steps that a physical model of the foamed ceramic burner is generated; the radiant heat flux inside media of the foamed ceramic burner is established by the adoption of a diffusion approximation method, the radiant heat flux on the boundary of the foamed ceramic burner is established through a double-flux method, and a solid phase energy equation of the foamed ceramic burner is obtained; a premixed combustion control model of the foamed ceramic burner is established by the adoption of a volume control energy balance method; the premixed combustion control model is disjointed, so that a discrete control model is obtained; numerical simulation is conducted on premixed combustion of the foamed ceramic burner under all the candidate combustion gas equivalence ratios according to the discrete control model and the physical model; all the candidate combustion gas equivalence ratios are screened on the basis of a preset screening condition according to a numerical simulation result. By the aid of the method, the combustion characteristic inside the burner can be obtained accurately, and the best combustion gas equivalence ratio can be screened out.

The invention relates to a feeding semi-pyrolysis device and method for a household waste incineration circulating fluidized bedboiler. The feeding semi-pyrolysis device for the household waste incineration boiler comprises a boiler front feeding part and a semi-pyrolysis part. The head of a screw feeder (6) of the boiler front feeding part is connected with a feeding chute (8), and the feeding chute is connected into a boiler wall (10) to enter a boiler furnace in the mode of forming an included angle between the feeding chute and the horizontal plane. The included angle refers to a chute angle (9). The semi-pyrolysis part comprises a hot air duct (1), an air evacuating device (2), a boiler-in pipeline (3) and an air evacuating pipeline (5). The air evacuating device is installed betweenthe hot air duct and the boiler-in pipeline. Boiler hot air is connected into the hot air duct. The boiler-in pipeline enters a boiler furnace lean-phase zone through a boiler wall opened hole. One end of the air evacuating pipeline is connected with the air evacuating device, and the other end of the air evacuating pipeline is connected with the head of the screw feeder. A ventilation door (4) isinstalled on the hot air duct in front of the air evacuating device. According to the feeding semi-pyrolysis device for the household waste incineration boiler, materials can be burnt more stably andsufficiently in the waste circulating fluidized bedboiler and exhausting standards are met.

The invention discloses a regenerative burner nozzle and relates to the technical field of burning of heating furnaces, quenching furnaces, forging furnaces, casting ladle preheating devices and heat treatment furnaces. The regenerative burner nozzle is formed in an integral casting mode and divided into a burner nozzle body 13 and a regenerative chamber 14. The burner nozzle body 13 is divided into a spraying segment 9, a burning segment 10 and a mixing segment 11, wherein the spraying segment 9 is cylindrical, the burning segment 10 is in the shape of a sector and is connected with a guiding burner nozzle body 1, dispersion of mixed gas is facilitated, and the burning effect is enhanced. The mixing segment 11 is cylindrical and is connected with an air channel 12 and a fuel pipe 8, and a sector-shaped end 2 is adopted on the other side of the air channel 12. Any angle can be formed between the fuel pipe 8 and the central axis of the burner nozzle. The regenerative chamber 14 is in the shape of a quadrangular prism, partition plates 3 are arranged in a vertical alternating mode so that the regenerative chamber can be partitioned to be in the shape of S, the number of the partition plates 3 ranges from 1 to 5, gas resistance can be increased if the number of the partition plates 3 is too large, and accordingly, gas flowing speed will be reduced. The regenerative chamber 14 is filled with heat accumulation mediums 5, the upper face and the lower face of the regenerative chamber 14 are provided with a heat accumulation medium outlet/inlet 4, and installation and maintenance are facilitated. The side, the tail of which is close to the partition plates 3, of the regenerative chamber 14 is provided with an air pipe port 7, a sector-shaped segment 6 is arranged on the inner side of the air pipe port 7, and gas can be dispersed evenly.

The invention discloses a backflow type air compressor and an engine. The backflow type air compressor comprises a U-shaped sleeve rotor, wherein the U-shaped sleeve rotor comprises an inner barrel, an outer barrel and an annular barrel bottom connected between the inner barrel and the outer barrel; an end cover is arranged on the opening side of the U-shaped sleeve rotor, an inner duct stator andan outer duct stator are arranged between the end cover and the U-shaped sleeve rotor, the inner duct stator is arranged in the middle of the inner barrel, and the outer duct stator is arranged between the inner barrel and the outer barrel. A low-pressure air compression section is formed between the inner barrel and the inner duct stator, and a high-pressure air compression section is formed between the inner barrel and the outer duct stator. Air flow flows back into the high-pressure air compression section after passing through the low-pressure air compression section, and then is discharged after flowing back again. The air compression capacity of the air compressor can be improved, the power of the engine is further improved, and the axial size of the engine can be shortened.