Two-stage vacuum burner

FIELD: power industry.

SUBSTANCE: three-vortex vacuum burner-reactor (100) for mixed fuels contains an intake manifold (150) which includes a vacuum chamber, a nozzle inlet for compressed air into a vacuum chamber, a nozzle for compressed air entering the vacuum chamber through the nozzle inlet for compressed air, and an ejector release, at that, the intake manifold (150) is configured with the possibility of feeding gaseous fuels to primary combustion chamber (110), the primary combustion chamber (110) which has with a cylindrical external part and a conical inner part. The conical inner part has a first end with a smaller diameter and a second end with a larger diameter. The first end of the conical inner part is connected to the inlet manifold (150). Conical inner part additionally includes the first group of directing blades; a reducing nozzle (120) connected with the second end of the conical internal part of the primary combustion chamber (110). The reducing nozzle (120) has the first part in the form of a truncated cone with a larger diameter, connected with the primary combustion chamber (110), and a second cylindrical part which continues from the first part of a smaller diameter in the form of a truncated cone; injectors (140) perpendicular to the first part in the form of a truncated cone of the reducing nozzle (120) and configured with the possibility of fuel injection into the primary combustion chamber (110); and a cylindrical secondary chamber (130), having a second set of directing blades configured with the possibility of channelling air into the secondary chamber (130). The smaller the diameter of the primary combustion chamber (110) at its first end, the larger diameter of the primary combustion chamber (110) at its second end and the first group of three directing blades form three vortexes of fuel to maintain fuel rotation to the outer part of the burner-reactor (100) and slowing down the movement of fuels to ensure complete combustion.

EFFECT: invention makes it possible to improve the quality of fuel combustion.

8 cl, 8 dwg, 1 tbl

 



 

Same patents:

FIELD: power industry.

SUBSTANCE: burner device for burning of gaseous and liquid fuel containing the housing with a branch pipe forming the air chamber, the laminar whirler which is coaxially located on the head part of the gas-distributing manifold with the branch pipe and the radial holes for gas supply into the twirled air flow discharged from the whirler, the central air duct for primary air passing, the pipeline with a nozzle for liquid fuel supply. The laminar whirler is designed as mutually alternating confusors and diffusers forming the narrowing and expanding air flows. The whirler plates are fixed in pairs directly on the gas-distributing manifold or on the bushing, removable from the manifold.

EFFECT: invention allows to improve the efficiency of burning of gaseous and liquid fuel by activating of fuel burning with providing of environmental safety.

6 dwg

Premixing burner // 2550565

FIELD: heating.

SUBSTANCE: invention refers to premixing burner for heat generator operation, containing at least a vortex generator, mixing section downstream of the vortex generator, and transition element for vortex flow transfer from vortex generator to mixing section. Additionally invention refers to transition element for such premixing burner. Transition element includes inlet connected to vortex generator, outlet connected to mixing tube, and internal loop between the inlet and outlet, delimiting a continuous flow; at least the inlet section of the internal loop is bent in radial shape inwards to internal diameter of the mixing tube, and internal loop at the outlet is at the same level with internal flow-limiting loop of the mixing tube.

EFFECT: smooth transition of flow-limiting loop from vortex generator to mixing zone.

20 cl, 5 dwg

FIELD: power industry.

SUBSTANCE: burner includes a pipeline with a central hole and multiple side holes in its outlet part, from the body of the pipeline and a removable head piece, and an insert with a central channel, which is located almost coaxially in the pipeline and separates an annular channel in the pipeline. The burner has a possibility of adjustable supply of liquid or gaseous fuel to the central channel and gas to the annular channel. Along an outer edge of the insert face there are at least four through-type scattering holes, and additionally, the burner includes a combined two-component atomiser including the first vortex chamber for fuel of the central channel and the second vortex chamber for gas of the annular channel, which are restricted with the insert face, the first and the second swirlers and the head piece face. The chambers are intended for swirling of central and annular flows in one direction. The chambers are located almost coaxially to the burner ducts; inlets of the chambers are atomiser inlets, and outlets of both chambers adjoin the central hole of the pipeline and form the atomiser outlet.

EFFECT: improvement of characteristics.

7 cl, 1 dwg

FIELD: heating.

SUBSTANCE: burner is provided with a central assembly of the fuel supply, as well as with an annular air channel covering the central assembly of the fuel supply, for supplying combustion air and with the vortex vanes located in the annular air channel. The vortex vanes have the first fuel atomisers for injecting the substantially gaseous fuel into the combustion air, and the second fuel atomisers for injecting the substantially gaseous fuel into the combustion air. The first fuel atomisers are fed from a fuel-distribution input in the assembly of the fuel supply. The second fuel atomisers are fed from the gas-distribution channel in the assembly of the fuel supply. The burner in operation has one direction of the fuel flow. The fuel-distribution input comprises a plurality of feeding tubes. Each feeding tube is connected downstream to the first fuel atomisers of the corresponding vortex vane, and upstream - to an annular nozzle. The annular nozzle is letdown when viewed in the flow direction, to the fuel-distribution channel and is put on the assembly of the fuel supply, so that the spatial separation between the annular nozzle and the fuel-distribution channel leads to lower stresses in the assembly of the fuel supply.

EFFECT: invention is directed to increasing the duration of the burner operation and to the improvement of the gas turbine.

7 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: guide vane is made with single first device for gas injection via a nozzle, and single second device for gas injection via the nozzle. To first nozzles the fuel is supplied from the first distribution pipeline, and to second nozzles - from second distribution pipeline. The distribution pipeline is build in the guide vane. The guide vane between the first distribution pipeline and second distribution pipeline is divided in two halves. Besides, the invention refers to the burner and gas turbine.

EFFECT: invention relates to strength improvement and increasing of the burner service life.

10 cl, 7 dwg

FIELD: power industry.

SUBSTANCE: invention relates to the field of power engineering. Burner module (10) for steel-casting units includes mixing zone (18), several fuel feed ducts (32) for feeding of combustible fuel to mixing zone (18), and several air feed ducts (34) for combustion air feeding to mixing zone (18), primary burner (42) with annular feed device (30) containing fuel feed ducts (32) and air feed ducts (34), central duct (44) through annular feed device (30); besides, central duct (44) is coaxial to annular feed device (30), and secondary burner (46) located in central duct (44) of burner module (10); burner module (10) includes auxiliary feed ducts (64, 66) for feeding of combustible fuel and/or combustion air to mixing zone (18); with that, auxiliary feed ducts (64, 66) have a cross-section that is smaller than the cross-section of fuel feed ducts (32) or air feed ducts (34), and fuel feed ducts (32) and air feed ducts (34) of the primary burner (42) are provided in an order alternating in a circumferential direction; with that, annular feed device (30) is formed with an annular duct containing several internal ducts; the internal ducts divide the annular duct into fuel feed ducts alternating in a circumferential direction (32) and air feed ducts (34); the annular duct is connected for transportation of one of the types of combustible fuel or combustion air; the internal ducts are used for transportation of another type of combustible fuel or combustion air.

EFFECT: invention allows creating an improved burner module.

10 cl, 4 dwg

FIELD: power engineering.

SUBSTANCE: burner system for burning fuel in the form of a fluid medium has a hub, a channel supplying air and a channel supplying fuel for each type of fuel (9, 12, 13, 16). The fuel supplying channel (9, 12, 13, 16) is made as partially in the burner hub. In the fuel supplying channel (12) there is a flow separator (40), which is located at a distance from a wall (21) of the fuel supplying channel (12) so that between the wall (21) of the fuel supplying channel (12) and the flow separator (40) there is an intermediate space (38), which relates to the path of passage of fuel flowing via the fuel supplying channel (12).

EFFECT: invention makes it possible to reduce thermal stresses in a hub.

8 cl, 6 dwg

FIELD: heating.

SUBSTANCE: fuel tube for a burner, and namely for a gas turbine burner, includes an end that has a surface for nozzles, as well as at least two fuel nozzles. The surface for the nozzles is equipped with splines between the fuel nozzles and is made in the form of an annular conical surface. The splines pass through the above surface perpendicular to the circumferential direction of the annular surface. The end is made in the form of a flattened cone. The side surface of the flattened cone forms the surface for the nozzles.

EFFECT: invention is aimed at increasing the nozzle service life.

7 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: burner for burning the gaseous and/or liquid fuel comprises full cylindrical body 3, air duct 6 connected with it with an air supply regulator and nosepieces 1 arranged in them for feeding gas and/or nozzle 2 for feeding liquid fuel. Installed in air duct 6 are distribution plates 10 of different length parallel to the axis of body 3 and to each other in such a way that the height of plates 10 decreases in the direction towards air supply regulator, multisectional gate 7 when some edges of plates 10 divide the inlet port of body 3 into parts and the other edges of plates 10 are bent towards gate 7.

EFFECT: increasing efficiency of adjustment of air consumption arriving for combustion, decreasing its resistance during motion and increasing its uniform distribution over the entire flame body volume ensuring a stable and reliable burning by the same.

2 cl, 2 dwg

FIELD: power industry.

SUBSTANCE: invention relates to power industry. Burner facility (20) for furnace device for burning liquid fuel mediums and/or inert materials, in particular of liquid fuel and/or furnace gas, besides the following is provided for each fuel type and/or inert substance: at least one mean (1, 2, 8, 9, 12, 13, 16) for supplying medium, mean (3, 4) for supplying air and mean for mixing the medium with air, designed as a stationary blade creating a twist (6, 7), which are formed in the walls of connected metal body of burner, wherein at least one mean (9, 13, 16) for supplying the medium is separated from adjacent zones of burner body along the corresponding separating wall by means of at least one intermediate cavity (33, 43 ) made in the form of recess, so that heat exchange between adjacent zones of the burner body, in particular between the adjacent means (9, 13, 16) for supplying medium is reduced in the zones made in the form of recess of intermediate cavity (33, 43). At least two means (9, 13, 16) for supplying medium are formed as separate attached to each other modular blocks (30, 40, 50) which are connected to each other via the connecting mean next but one, located at least unilaterally contact stud (32, 42) of cross-sectional surface intended for this purpose, wherein the contact stud (32, 42) at least partially covers the intermediate cavity (33, 43) designed in the form of recess.

EFFECT: invention permits to improve the operational reliability of the burner.

13 cl, 5 dwg

FIELD: heating.

SUBSTANCE: invention refers to an activation method of pulverised coal particles fractionated as to size by their introduction as vertical slot flows mixed with combustion products and heating with cocurrent vertical slot gas flames in horizontal chamber-flame heaters, emission and combustion of light and heavy fractions of volatile matters at interaction with gaseous combustion products, air and steam in inverter reactors, air cooling in a fluidised bed with simultaneous removal of heat to a surface heat exchanger, which differs by the fact that flame heating is performed at oxygen deficit with release of moisture and light fractions of volatile matters, and incomplete combustion products and heated coal particles are introduced to vertical inverter annular reactors, in which at first, ignition and combustion of light fractions of volatile matters is arranged in annular down flows with air make-up of flames with radial jets from vertical paraxial sections; then, heavy fractions of volatile matters are removed and burnt in down flows with blowdown of flames with tangential steam jets at simultaneous removal of heat to built-in surface coolers. Besides, the invention refers to an installation for implementation of the above method.

EFFECT: lower gas consumption and losses of coal activation heat.

2 cl, 4 dwg

FIELD: power industry.

SUBSTANCE: furnace consists of flue tubes, burner, stack and explosion relief valve installed inside the furnace on the wall of the flue tube which is the first one in flow direction, which combines passes at actuation. Design of the proposed furnace is simpler and safer in comparison to the existing ones due to the fact that heat insulation of explosion relief valve is not required, there is no need for sealing of its fit and possibility of combustion products penetration into the boiler room is excluded.

EFFECT: simpler furnace design and reduction of risk of getting burns by maintenance personnel at actuation of the valve.

1 dwg

Furnace // 2355947

FIELD: heating.

SUBSTANCE: invention relates to heat-and-power engineering. The technical result is achieved in a furnace comprising a central and at least one peripheral combustion chambers divided by a screen and connected by a by-pass opening; an outlet end of the burner device is placed in the peripheral combustion chamber made as a muffle, the peripheral combustion chamber is of equilateral rectangular parallelepiped shape and the outlet end of the burner device is fitted into the parallelepiped inside so that to closely contact with its walls and form gaps at its corners; secondary air nozzles and pilot burners are set in and along the corners cocurrent to the flow; the wide splitter base is located in the plane of the wide diffuser base with the diffuser diametre being equal to the diametre of the circle inscribed in the parallelepiped.

EFFECT: ensuring effective lighting up of a boiler with a highly concentrated powder and fast fuel combustion due to preheating of the powder in the glowing muffle of the peripheral combustion chamber by flat fuel supply directly to the muffle wall.

2 dwg

The invention relates to energy and can be used in thermal power plants for bezazotnoi firing of the boiler from the cold state to the working mode and lighting coal-dust flame

Two-stage furnace // 2132513
The invention relates to the design of two-stage furnaces industrial boilers with horizontal rotation gases, mainly transportable, and may also find application in marine steam boilers
The invention relates to energy and can be used from fuel combustion in boiler plants

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering. Industrial burner that features low levels of contaminants emission is suitable for use in thermal furnaces for treatment of billets at free atmosphere. Said burner can create compact and lean flame at low emission of NOx at whatever temperature of the chamber and whatever air excess for support of combustion. This burner incorporates separate air inlet to support combustion and separated combustible gas inlet.

EFFECT: separation of the main combustion process into three stages, circulation of flue gases and depletion of some reagents.

14 cl, 8 dwg

FIELD: power engineering.

SUBSTANCE: double-chamber furnace to burn crushed wastes comprises a layer prismatic chamber of gas generation with vertical front, rear and side walls, a ceiling slab, having a gas-tight unit for wastes input, with a layer-retaining bottom grate, with nozzles of primary air blowing installed above it, with arranged windows of generator gas discharge on the rear wall above the layer-retaining grate and nozzles of primary air blowing and under the layer-retaining grate and equipped with filtering grates, and also a prismatic afterburning chamber with vertical front, rear and side walls, windows of generator gas input arranged on the front wall, nozzles of afterburning air, flues that connect chambers of gas generation and afterburning and connected to windows of discharge and input of generator gas accordingly in the rear wall of the gas generation chamber, and in the front wall of the afterburning chamber, with axisymmetric nozzles of secondary air blowing brought inside and aligned in direction of the afterburning chamber, in flues with even pitch there are piers installed, forming a system of vertical slot confusor channels with equivalent input and output throughput sections and parallel vertical planes of symmetry, channel width of 0.4-1.7 on the front wall of the afterburning chamber in channels of output sections, nozzles of secondary blowing are arranged in vertical rows, installed in input sections of each channel, and their axes are matched with vertical planes of symmetry of appropriate confusor channels.

EFFECT: invention will make it possible to reduce underburning of introduced wood wastes and emissions of hazardous substances into atmosphere.

3 cl, 5 dwg

FIELD: power industry.

SUBSTANCE: low-emission cyclone reactor has vertical housing consisting of the first conical stage and at least three cylindrical separation stages of crushed fuel into fractions. Fuel and primary air is tangentially supplied to the first conical stage of reactor at angle β=2.5°, which allows using the fuel with particle size of up to 3 mm. Secondary air is tangentially supplied to upper part of the third stage at fixed position of gate valves at angle φ=78°-88°. In order to remove ash from upper reactor stage there provided are ash removal pipes attaching the upper stage to slag and ash hopper.

EFFECT: increasing combustion efficiency of crushed fuel, enlarging the range of particle size distribution, improving the quality and simplifying the burning process control, and reducing the content of nitrogen oxides in flue gases.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: gas generator includes vertical gasification chamber, grate, air supply device, generated gas discharge device, vent pipe and extraction device of heat obtained from combustion of generator gas. The new feature consists in the fact that generated gas discharge device is installed above gasification chamber and made in the form of the bottom of gas combustion chamber. At the bottom there fixed are flame burners made in the form of connection pipes connecting the gasification chamber to gas combustion chamber. Heat removal device is made in the form of water heat exchangers installed in gas combustion chamber. Gas combustion chamber bottom is made of two parallel plates connected by means of a shell so that tight cavity to which air is supplied is formed between them. Air supply holes to gas combustion chamber are made on upper plate. Air supply holes are made on concentric circles; sleeves guiding the air flow to combustion zone are fixed on holes. Heat extraction device includes water jacket made on outer surface of gas generator housing and connected to heat exchangers installed in gas combustion chamber. Water heat exchangers are made in the form of tight reservoirs with water supply and discharge connection pipes consisting of metal plates connected by means of a shell. Holes connected by means of connection pipes are made in plates of heat exchangers.

EFFECT: reduction of costs for manufacture of gas generator and increase in its efficiency when using the device in heating systems of domestic and production premises.

8 cl, 1 dwg

FIELD: power engineering.

SUBSTANCE: fluidised bed fuel combustion device includes reactor having lower and upper zones, device for fuel feeding to upper zone, device for supplying primary compressed air flow to lower zone, air-distributing grid installed in upper part of lower reactor zone, chamber located under air-distributing grid and connected to non-combustible component discharge device; at that, upper zone has inner cylindrical surface coaxially to which an outlet cylindrical nozzle is made in upper reactor edge. Upper reactor zone is divided into combustion zone and afterburning zone; at that, combustion zone is located between lower reactor zone and afterburning zone restricted with upper reactor edge; at that, combustion zone and afterburning zone are connected by means of cylindrical channel, and each zone has in upper part the device for tangential supply of secondary compressed air, which is connected with one or more tangential nozzle channels with inner cylindrical surface of appropriate zone, and fuel feeding device is connected to upper part of combustion zone. Diametre of inner surface of afterburning zone is equal to 0.4-0.8 of diametre of inner surface of combustion zone. Diametre of cylindrical channel connecting combustion zone and afterburning zone to each other is equal to 0.5-1.0 of diametre of inner cylindrical surface of afterburning zone. Inner diametre of outlet nozzle in upper edge is 0.5-0.7 of diametre of inner cylindrical surface of afterburning zone. In devices for tangential supply of secondary air of combustion zone and afterburning zone, channels are directed to one and the same side.

EFFECT: improving fuel combustion efficiency.

11 cl, 4 dwg

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