Combustion device for combustion of coal-water fuel
(57) Abstract:The invention relates to the creation of a combustion device for combustion of coal-water fuel and can be used for the disposal of waste coal mills coal, production of culturla, production anthracite crumbs filter and other processing industries, freeing the land from waste. Combustion device for combustion of coal-water fuel enables to burn hydrocarbon fuel fractions of coal 0 - 2 mm with high efficiency, getting environmentally friendly products of combustion and granulated ash, suitable for the manufacture of construction materials. Heating device consists of a screw pump feeder, the outlet of which the supplied compressed air. Pump-feeder delivers the coal-water fuel on the surface to allow the camera where it is burned in a fluidized bed with an inert carrier. 2 Il. The invention relates to boiler plants operating on coal and ensures efficient combustion of coal-water fuel in the boiler room operation on fine coal particle size up to 2 mmKnown boilers with furnace operating m plants with low productivity. Moscow, Energoatomizdat, 1989, S. 24).Known combustion device for combustion of coal-water fuel, including the furnace and pump-feeder, piping with nozzles for spraying water-coal fuel combustion space (see EN, 2036376, 1995).The disadvantage of such a combustion device is the necessity in the preparation of fuel to grind it to a particle size of 250 microns, which requires a large amount of electricity and the use of expensive equipment. In addition, it is very difficult to ensure sustainability of the torch.The aim of the invention is to provide a combustion device that provides efficient combustion of coal in domestic boilers.To achieve this goal in a combustion device for combustion of coal-water fuel, including the furnace, and the pump-feeder, and piping with nozzles for spraying water-coal fuel combustion space, at the base of the furnace sectional installed with supply air jet chamber, which is filled with the layer of coarse sand, and the front wall of the furnace placed the spray nozzle with flow in the combustion zone 3-phase water-air-coal mixture containing particles of coal particle size 0 - ha.In the combustion device mount section to allow the camera, which is filled with the layer of coarse inert material (sand) is used as the inert carrier.In Fig. 1 shows a General view of the combustion device of Fig. 2 - furnace with sectional allow camera.The combustion device includes a feed hopper 1 coal-water fuel with a particle size of 0 - 2 mm, under which the pump 2 for dosing fuel. To the output connection of the pump 2, which is screw the supplied compressed air. From a screw pump 2 departs pneumatic transport pipe 3 from the nozzle 4, is introduced into the furnace 5, the nozzle 4 is placed on the front wall of the furnace 5, the base of which has a sectional jet chamber 6, which through the nozzle 7 of the supplied compressed air.The combustion device operates as follows.The hydrocarbon fuel with a particle size of coal 0 - 2 mm served in the feed hopper 1. From the hopper 1 to the hydrocarbon fuel by means of a screw pump 2 with a specified capacity pneumatic transport line 3 is fed to the boiler furnace 5 and spray through a nozzle 4 above the layer of hot sand.Compressed in the giving. The presence of hot inert layer provides 100% coal.While the ash particles are coagulated and are carried away with the exhaust gases in the ashtray and aerocycle where are captured and used for manufacture of building materials.The estimated economic effect of the modernization of boiler HP-18 capacity of 0.2 Gcal is 192 thousand rubles Combustion device for combustion of coal-water fuel, including the furnace and pump-feeder, piping with nozzles for spraying water-coal fuel combustion space, characterized in that the base of the furnace sectional installed with supply air jet chamber, which is filled with the layer of coarse sand, and the front wall of the furnace placed the spray nozzle with flow in the combustion zone 3-phase water-air-coal mixture containing particles of coal particle size 0-2 mm pipeline from the pump feeder to the outlet nozzle which is attached the compressed air.
FIELD: methods for burning of solid fuel.
SUBSTANCE: the method for salvaging of trinitrotoluene, whose term of safe storage has expired consists in the fact that trinitrotoluene is fed to the combustion chamber in a melted state (at a temperature of 80 to 90 C) and burnt off in the atmosphere of gaseous fuel-methane not containing oxygen in its composition, as a result of burning due to own oxygen of trinitrotoluene, a great amount of own carbon (soot) is extracted, which then finds industrial application. For burning of trinitrotoluene use is made of an installation including a combustion chamber, pressure regulators for delivery of molten trinitrotoluene and gaseous fuel (methane), electric igniter and a filter for catching soot.
EFFECT: provided safe method for salvaging of trinitrotoluene in the combustion chamber in the atmosphere of gaseous fuel (methane).
2 cl, 1 dwg
FIELD: combustion apparatus for fluent fuels.
SUBSTANCE: method comprises supplying gas to be burnt out from the head of the burner of the torch plant in the combustion zone. The composition of gases is variable. The gas flow rate varies from 1m/s to 3.5 of sound speed due to generating excess static pressure of gas from 0.00001 MPa/cm2 to 3.0 MPa/cm2 by the movable control device. The gas jet is turbulent with a cone angle from 2o to 155o.
EFFECT: enhanced efficiency.
FIELD: combustion apparatus using fluent fuel.
SUBSTANCE: burner comprises casing made of a scroll, hollow shaft for fuel supply arranged inside the casing, sucking and exhausting branch pipes for air secured to the casing, nozzle mounted in the conical sleeve, diffuser, and drive. The shaft is mounted for rotation and provided with blades of the fan. The nozzle and conical sleeve are secured to the hollow shaft. The drive is secured to the casing inside the sucking branch pipe. The branch pipe is mounted with a space relation to the casing to provide a space for air flow. The shaft of the drive is hollow to provide fuel flow to the nozzle. The shaft of the drive and hollow shaft of the burner are axially aligned and interconnected. The drive shaft is provided with emulsifier for generating emulsion or suspension and supplying fuel and/or water emulsion and cock for fuel supply.
EFFECT: enhanced efficiency.
2 cl, 1 dwg
FIELD: methods of combustion of hydrocarbon fuels.
SUBSTANCE: the invention is dealt with the method of combustion of a hydrocarbon fuel in a burner. The method of combustion of hydrocarbon fuel in a burner provides, that along the burner external surface a non-corroding technical atmosphere is set in motion, chosen from a group including steam, CO 2 , nitrogen or their mixture. In the capacity of the non-corroding technical aerosphere they use steam. Combustion is carried out at the presence of steam. At least a part of the non-corroding aerosphere is added to the hydrocarbon fuel. The non-corroding aerosphere is used in an amount sufficient to dilute or replace a corroding technical aerosphere existing around the external surface of the burner. The invention allows to avoid a corrosive spraying of the metal and carbonization of the industrial burners exposed to action of the corroding technical aerosphere.
EFFECT: the invention allows to prevent a corrosive spraying of the metal and carbonization of the industrial burners.
5 cl, 1 dwg
FIELD: methods of burning pulverized fuel.
SUBSTANCE: proposed method includes preparation of fuel for burning, delivery of fuel, transportation of high-pressure air, mixing air with pulverized fuel and delivery of high-concentrated aeromixture to boiler burners. Transporting air is ozonized before mixing it with pulverized fuel ; part of ozonized fuel is delivered to transport of pulverized fuel and remaining part is delivered autonomous passage of burner to flame root via pipe line.
EFFECT: steady ignition of pulverized fuel; enhanced efficiency of burning process.
FIELD: methods of burning hydrocarbon fuel.
SUBSTANCE: proposed method of combustion of hydrocarbon fuel includes separate delivery of fuel and air to burner; fuel is delivered mainly to central area of air flow and is burnt over periphery of flame at excess air mode and at excess of fuel in central area of flame; vapor is fed to central area of flame and field of acoustic oscillations is applied. Burner proposed for burning the gaseous hydrocarbon fuel includes air box, hollow gas manifold with outlet gas holes; it is coaxially arranged inside vapor swirler manifold made in form of hollow cylindrical body with profiled passages and mounted in cylindrical body at radial clearance; cylindrical body has nozzle hole; one end face of vapor swirler is blanked-off and opposite end face is smoothly engageable with nozzle hole in body. Burner for combustion of liquid hydrocarbon fuel includes air box and injector mounted on fuel swirler and vapor swirler which are mounted in cylindrical body at radial clearance; said cylindrical body is provided with nozzle unit made in form of hollow detachable cap with holes over spherical end face; mounted at spaced relation inside this cap is cap of smaller diameter and similar in shape; smaller cap has holes which are coaxial to outer cap; outer cap is provided with additional holes; inner cap is not provided with such holes.
EFFECT: reduction of nitrogen oxide emissions by power-generating boilers at enhanced combustion of fuel.
5 cl, 5 dwg
FIELD: fuel burning devices.
SUBSTANCE: proposed ejection burner has body with branch pipes for delivery of combustion components, stabilizer, purging ports and injector additionally provided with mixing ejector consisting of body, contraction passage, fuel and oxidizer supply pipe unions; its construction makes it possible to regulate sectional areas of ejecting and ejected flows due to change of penetration of oxidized supply pipe union into contraction passage of ejector. Widening of flow of fuel-and-gas mixture in injector is made in two sections at different taper angles; diameter of spherical cover exceeds diameter of flow section of injector. Purging ports are made in form of three-stage system; first-stage purging ports are made in form of holes in burner body; second-stage purging ports are made in form of row of holes in combustion chamber; their flow sections change by means of regulating ring moved over surface of combustion chamber; third-stage purging port is made in form of coaxial circular passage copying the combustion chamber geometry. Stabilizer tube is twisted in form of cylindrical spiral. Proposed burner makes it possible to improve quality of mixing and evaporability of fuel in injector and to obtain complete combustion of fuel at extended range of stable operation by excess air coefficient.
EFFECT: enhanced efficiency; enhanced stability of combustion.