Turning pleaseprovide boiler
(57) Abstract:Use in steam boilers on mnogosolnca fuel, as well as other industries in the device for the transportation and separation of materials in pulverulent condition. The essence of the invention: on the curved inner surface of the cochlea mounted transverse ribs up to 2% of the lateral dimension of the input pipe, but not less than 4 mm, when the distance between the ribs 1.5 - 2 times greater than a height of the ribs placed within the sector, for which the angle between the axis of the inlet pipe and the normal to the curved surface is from 20 to 70o. 1 Il. The invention relates to a power system and can be used in steam boilers on mnogosolnca fuel, as well as other industries in the device for the transportation and separation of abrasive materials pulverized.The known device with snail entrance dusty stream from a steam boiler, for example, snail battery cyclones  the Use of these devices reduces the speed of the gas-and-abrasive wear of smoke exhausters and other equipment.A disadvantage of the known devices of this type is an intense symptom the x particles, the lower part of the descending flue which is executed in the form of snails right and left rotation with a gap in the curved surface of snails, forming a ledge, outdoor dust in the camera, and the output duct attached endwise to each of the cochlea and to the dust chamber inlet, the entrance to which is located under the dust cover of the camera between the two ledges 
Selected for the prototype swivel Luggage boiler flue and other output devices boilers can reduce the speed of ash wear by aligning and reducing the concentration of fly zone in the flue downstream, the alignment of the gas velocity over the cross section of the flue.The disadvantage of these devices is abnormal wear on the inner surface of the input snails.Proposed rotary pleaseprovide boiler containing the input snail and output cylindrical pipes. On the curved inner surface of the cochlea mounted transverse ribs up to 2% of the lateral dimension of the input pipe, but not less than 4 mm, when the distance between the ribs 1.5-2 times greater heights, and ribs disposed within the sector, for which the angle between the axis of the inlet pipe and the normal to a curve on the supply intensity abrasive wear (life extension) of the input snail fin tube is curved inner surface of the cochlea. Transverse ribs are installed within the sector, for which the angle between the axis of the inlet pipe and the normal to the curved surface is from 20 to 70about. The surface of the fins is selected based on the nature of local wear snails rotary gas pipelines. It is also known that the maximum wear low-carbon steels is observed at angles of attack of abrasive flow 30-60about. Tests conducted on existing equipment, confirm the need to limit the specified sector fins curved inner surface of the cochlea.The first edge is made with unstressed fluid entrance-side flow. The height and pitch of the ribs is determined on the basis of considerations for creating effective protection of curved surfaces from wear by reducing the surface reflection for large particles, the generation of the intercostal canal system of vortices while maintaining the hydraulic resistance at the same level.Dimensions rotary pleaseprovide boilers of various production vary from 0.2 to 5 m Installation ribs should not increase the hydraulic resistance of the flue, cluttering section for free passage dusty is, equal to the distance along the normal between those walls pleaseprovide in the section before the turn, which then move in a curved surface input snail pipe.The minimum height of the ribs should be at least 4 mm for generating vortices of scale on the order of two more scale vortices generated by the raw concave surface. The step edges of the conditions of intense vortex in the intercostal space and the minimum resistance setting should be a half to two times the height of the ribs. It is advisable to perform ribs inclined offset upper (remote output) side of the ribs down to the stream.The drawing shows schematically the proposed installation of the wear of edges in a rotary gas boiler.Rotary gas contains input snail pipe 1, followed by snail 2 axial weekends cylindrical pipe 3. Within the shaded Central sector 4 on the input concave surface snails mounted transverse ribs 5 the height h of not less than 4 mm, when the distance between the ribs (1,5-2)h. First along the strip edge 6 is made with unstressed smooth entrance usbecause stream.Vnesti snails 2 performed after finned surface gap (the ledge) 7, discoveries in the dust chamber 8. To reduce the hydraulic resistance of the rotary pleaseprovide on the opening of the discharge pipe can be installed a device that converts rotational movement of the stream after snails, restoring static pressure.The hydraulic resistance of finned snail rotary pleaseprovide with different dimensions and the gas flow does not exceed the hydraulic resistance of the smooth rotate 90about("tribe"). The angle of the ribs to the generatrix of the curved surface can vary from 0about(for a simple transverse ribs) 30aboutdeviation in the direction of gas flow to the end of the ribs remote from the output of a cylindrical pipe.Dusty dust and gas flows from the boiler to the rotary pipeline input snail nozzle 1.With the passage of flue gases through the inlet snail finned tube under the influence of inertial forces is a selection of the coarse fraction abrazivcompany ash in the peripheral region of the cochlea 2, then the ash is discharged through the slit 7 in the dust chamber (bunker) 8. Under the influence of rarefaction for turning gas boiler gases gradually the expulsion of the eye in the socket of the ash particles are rejected to the external finned wall. Large-scale vortices that occur near the concave surface, crushed ribs into smaller vortex formation, the scale of which is proportional to cell size between the ribs. In the absence of large-scale turbulent transport of suspended in the flow of the particles in its mass cannot reach the wall of the swivel duct. The speed of those particles that hit the wall of the flue, is markedly reduced in the presence of the ribs due to the deceleration of the flow, education aerodynamically shady areas and stagnant currents of small magnitude in the intercostal space.The rate of wear metals is proportional to impact velocity of the abrasive on the surface to the extent of 2-3, therefore, proposed a simple aerodynamic braking unit flow at the wearing surface turned out to be efficient and profitable.Health check beading proposed for protection against abrasive wear of the surfaces of the input snail pipe swivel gas boiler, was carried out under production conditions on snail zakruchivali cyclone with a diameter of 512 mm battery ash boiler TPE-208 Smolenskaya GRES. Protection of snail secretively cyclones finning issue>The result of the experiment revealed that the finned snail surfaces (blades) cyclone shell thickness S 5 mm at follow-14200 h remained intact. Snail surfaces (blades) without fins thickness S 8 mm wear to the through holes for 6000 h in the same conditions and require replacement.Material of blades Article.3.In laboratory conditions on the stand was mounted swivel camera boiler flue performed in  the Concentration of ash behind the camera after her beading has not changed.On the stand was tested cyclone element diameter 512 with ribbed internal surfaces snails swirl (blades) of the dust-Laden stream.The effectiveness of the cleaning gas in such a cyclone is virtually unchanged, but reduces its hydraulic resistance.The use of a rotary flue boiler with ribbed surface input snail pipe will not only protect the equipment of the boiler from wear coarse abrasive ash, but also to increase the service life of the proposed device and to improve its technical characteristics. TURNING PLEASEPROVIDE BOILER containing the input snail and output cylindricity to 2% cross-connection size inlet snail pipe, equal to the distance along the normal between the walls of pleaseprovide, turning into a curved surface input snail pipe, but not less than 4 mm when the distance between the ribs, 1.5 to 2 times greater heights, and ribs disposed within the sector with an angle between the axis of the inlet pipe and the normal to the curved surface equal to 20 70o.
FIELD: heat power engineering.
SUBSTANCE: boiler plant comprises chimney with air passage between the reinforced concrete shaft and lining, which define gas discharging passage, air heater mounted under the gas discharging passage, and fan for supplying heated air to the air passage in the chimney. The air passage is separated by two vertical baffles into two sections. The pipe is provided with a box for discharging the heated air from one section of the air passage to the other.
EFFECT: enhanced efficiency.
FIELD: technologies for combustion of flush gases, including those under high pressure, during extraction and processing of natural gas and oil.
SUBSTANCE: body of burner, mounted on gas inlet pipe, is made conical with widened portion at upper portion, in the body additionally mounted are two catalyst elements, at lower portion on inlet section first catalyst element is positioned, and above on outlet section - second catalyst element, rotary shutters are mounted on base of conical body in additional way, so that in closed position they are in contact with first catalyst element, and open position between first catalyst element and body gap is formed, also, device is additionally provided with one or more main torches, mounted in gas inlet pipeline below rotary shutters and first catalyst element. Relation of diameters of first and second catalyst elements matches relation of debits of hydrocarbon gas, fed in normal mode and during salvo exhaust. Catalyst elements are manufactured either in form of cell-like structured blocks with direction of channels in parallel to direction of feeding of flush gases, or in form of block sections with granulated catalyst, for example, Rachig rings, or in forms of block sections with active-catalyst metallic shavings, or in form of blocks with active-catalyst metallic meshes.
EFFECT: higher ecological safety and fullness of combustion of flush gases in broad flow range, simplified construction and comfort of maintenance.
6 cl, 3 dwg
FIELD: water heating.
SUBSTANCE: boiler can be used for heating and hot water supplying. Boiler has rectangular closet provided with heat insulation and casing. There is furnace with burner, heat exchanger and branch pipe for letting combusting gas through outer wall of room's wall are disposed inside the closet. The branch pipe is provided with cassette filled with adsorption matter. Cassette is hermetically placed in branch pipe for letting combustion products out between casing of rectangular heat-protected closet and internal surface of outer wall of the room. Branch pipe for letting products of combustion out behind outer wall of the room is mounted in vertical and has cone-shaped muzzle with curvilinear planes and guides and twisting ribs.
EFFECT: improved ecological parameters of exploitation.
FIELD: methods of purification of flue gases.
SUBSTANCE: the invention is pertaining to the method of purification of flue gases and may be used to decrease the outbursts of nitrogen oxide with the help of the method of the high-temperature selective non-catalytic reduction. The method provides for feeding of the previously prepared steam-gaseous reduction mixture into the gas flue of the flue gas burning aggregate with the temperature of the flow of the purification gases of 700-1200°C. At that the steam-gaseous reduction admixture is prepared in the connected to the gas flue high-speed reactor during 0.5-5 seconds by introduction of a water solution of carbamide with a superheated steam at the pressure of 3-10 atm. Concentration of the water solution of carbamide makes 20-40 mass %. The time of the contact of the water solution of carbamide with the superheated steam predominantly makes 0,5-2 seconds. The pressure in the reactor predominantly makes 3-6 atm. The temperature of the superheated steam makes 200-400°C. The invention ensures simplification of the production process of purification of the effluent gases from nitrogen oxides, to increase the level of purification of such a gas in the broad range of the temperatures of the purified combustion products, and also to decrease significantly the share of the secondary contaminant - ammonia, in the purified gases.
EFFECT: the invention ensures simplification of the production process of the effluent gases purification from nitrogen oxides, to increase the level of purification of the gases in the broad range of the temperatures of the purified combustion products, to decrease significantly the share of the secondary contaminant - ammonia in the purified gases.
5 cl, 2 ex, 1 dwg, 2 tbl
FIELD: consuming industrial waste.
SUBSTANCE: method comprises securing the housing filled with the charge of the solid rocket fuel to the front part of the gas duct of the plant for using the charges of the solid rocket fuel, burning the solid rocket fuel, and processing the combustion products by cooling the combustion products with a material with high heat capacity, dry cleaning of gas with a neutralizer-sorbent, and afterburning the combustion products.
EFFECT: enhanced efficiency.
7 cl, 2 dwg
FIELD: arrangements or devices for treating smoke or fumes.
SUBSTANCE: head comprises gas supply pipe with gas gate and protecting shield mounted outside and coaxially at the top end of the gas supply pipe. The protecting shield is composed of two baffles made of two hollow trancated cones mounted one on the other. The grater base of the top baffle faces downward, and that of the bottom baffle faces upward. The smaller base is connected with the gas supply pipe.
EFFECT: enhanced reliability and prolonged service life.
2 cl, 2 dwg
FIELD: ferrous metallurgy; heat and power industry; other branches of industry; systems of production of the smoke-gas discharges utilization.
SUBSTANCE: the invention may be used in an iron and steel industry, at the enterprises of the heat and power industry and in the other branches of industry. The system the gas-smoke pipe with the gas duct on the metallic supports, the water-sprinkle installation, the water-collecting reservoir with the water outlet, the air duct, the water duct, the pumping station. The gas duct is made in two levels, at that the lower level of the gas duct ends with the muzzle, inside which there is the figured metallic plate forming near the muzzle throat the supercharge of the "C"-shaped form with the maximum clearance in the top point of the muzzle. The butt of the figured metallic plate of the "C"-shaped supercharge is dipped inside the muzzle and the butt of the muzzle is partially located under the water-sprinkler. The top level of the gas duct is located above the body of the water-sprinkler and starts with the gas collector with the open lower part. On the body of the water-sprinkler with the trilateral acid-resistant sheathing there is the grating with a net for the catalysts.
EFFECT: the invention ensures improved design and efficiency of the system operation.
FIELD: recuperation of energy from hot gas.
SUBSTANCE: proposed method is used for recuperation of energy from hot gas having temperature above 650°C and absolute pressure above 1.7 bar; gas contains non-solidified compounds of alkali metals and particles. Proposed method includes the following stages: cooling gas to temperature below 550°C with the aid of shell-and-tube heat exchanger where hot gas is passed via inter-tube space and cooling water is passed via space inside tubes where steam is formed from which steam energy is recuperated; particles of gas are separated by means of one or more centrifugal separating units arranged in succession to obtain content of dust below 400 mg/Nm3; gas is expanded in expansion machine for recuperation of energy.
EFFECT: enhanced efficiency of recuperation.
16 cl, 1 dwg
FIELD: heat power engineering.
SUBSTANCE: device comprises housing covered with a conical shield and provided with bottom conical chamber for collecting condensate, air heat exchanger coaxially mounted inside the housing, and base mounted on the head of the chimney shaft and provided with the air heat exchanger. The housing is provided with the cylindrical funnels for sucking cold air and discharging cleaned gases, the shell of the air heat exchanger provided with straight flow pipe bank with transverse supporting cross-pieces made for permitting change of the direction of air sucking into the interpipe space and mounted with a minimum space 1-3 mm in the oval opening in the sloping plate welded to the housing. The edge of the plate is flanged upward to define a sloping chute for descending the contaminated condensate. The base is shaped into the ring and provided with oval ports inclined to the side and receiving tips made of magnetic steel sheet and used for control of the magnetic field. From one side of the base, there is a cooled magnetic catcher connected with the space and branch pipe for collecting and removing condensate. In front of the catcher, there is a funnel for sucking a part of the hot chimney gases with dust from under the bottom tube bank of the air heat exchanger to the system for recirculation of the chimney gases. The method for catching emissions is also described.
EFFECT: expanded functional capabilities.
4 cl, 3 dwg
FIELD: treatment of combustion products.
SUBSTANCE: method comprises step supply of oxidizer and supplying vapor ammonium mixture. The secondary air is supplied upstream of the afterburning plant, and vapor ammonium mixture is introduced to the zone of the afterburning plant downstream of the set of fireproof surfaces.
EFFECT: reduced emission of nitrogen acids.