Installation for sanitary cleaning gas emissions from soot
(57) Abstract:The invention relates to a wet cleaning gas emissions from dust and harmful impurities by selective absorbents with subsequent recovery of absorbents and disposal of absorbed substances. The inventive installation comprises a scrubber with spray organic solvent nozzles in the upper part, the collections of the high-boiling organic solvent, centrifugal pumps for feeding the circulating solvent to the nozzle pipe of input gas emissions from soot and discharge of the cleaned gas emissions. Socket for input gas emissions from soot connected to the scrubber side in the upper part below the level of the installation tori with jets. Running parallel to the main scrubber is mounted in a water scrubber overhead tori with nozzles and to the lower input of gas emissions from the primary scrubber. Discharge gas pipe connected to a water scrubber at the top and connected with a suction fan. The plant is equipped with a tank for separation of the organic solvent of water and soot, auger for removal of soot, the unit for removal of the solvent with water from the soot and dry soot from the water. 8 Il. The invention of the C and harmful gaseous impurities and may find application in chemical, petrochemical, metallurgy, energy and other industries.It is known that large amounts of black carbon in the atmosphere occur in the production of carbon black, and other similar processes with the formation of black carbon (soot) or finely dispersed carbon black.Soot is a product of incomplete combustion or thermal decomposition of carbonaceous substances is a fine dispersed powder consisting of fine particles, mainly carbon 83,8-99.6% of hydrogen is 0.1 to 1% oxygen 0.1 to 4.5% of the Average particle size of carbon black is composed of water, but due to the affinity with hydrocarbon wetted diesel oil (kerosene), which can be used as the absorbent due to the high boiling point of about 270aboutC.Closest to the technical essence and the achieved effect is the installation for sanitary cleaning gas emissions from solid particles containing hollow scrubber with spray nozzles, in which gas is supplied from the bottom, and the top countercurrent served the dispersed liquid. Hydraulic resistance to the flow of gas in a floor scrubber does not exceed 250 PA (25 mm water.cent.).one technology.The objective of the invention increase the efficiency of the efficiency of purification of gas emissions from soot in the immediate area of production of soot.This is achieved by the apparatus for cleaning gas emissions from carbon black, including the scrubber nozzles in the upper part, a collection of circulating high-boiling organic solvent, a centrifugal pump for supplying the solvent to the spray nozzles, the nozzles for input gas emissions from soot and discharge of the cleaned gas emissions, a pipe for input gas emissions from soot connected to the scrubber side in the upper part below the level of installation of the spray nozzles, and a nozzle for discharge of the cleaned gas emissions connected to the scrubber side bottom with an inclination in the direction of the scrubber, the spray nozzle is connected to a concentric factors at two levels from the top to the nozzles, the nozzle is made in the form of two conical elements with vertical axes, between which is tightly clamped horizontal disks with arched slots bulge upwards, arranged in concentric circles with the axes of the arched slots directed at an acute angle to the radius from the periphery to the center, the upper conical elements eleuteria for attachment to pipes tori, the direction of the axes of the arched slots in the guide disks adjacent the Torah nozzles opposite, next to the main scrubber is mounted in a water scrubber to the bottom of which is connected the outlet of the purified gas emissions from the primary scrubber, in the upper part of the water scrubber on two levels set concentric Torah with spray nozzles larger than in the primary scrubber, to the upper part of the water scrubber is connected a branch pipe connected with the suction fan, a nozzle connected with the centrifugal pump, is connected to the collector of the circulating water, which has an upper glass lantern for removal of organic solvent, and the collection of organic absorbent is supplied with the lower glass skylight to divert water and auger for unloading from the top of soot, the plant is equipped with equipment for the distillation of water from the soot of an organic solvent, condensing the vapors of an organic solvent and water, separating them and feed in the collections of water and an organic solvent and drying the soot from the water.In Fig. 1 is a flow diagram of the installation for sanitary cleaning gas emissions from soot; Fig.2 section a-a in Fig.1; Fig.3 section b-B in is; is a of Fig.8 section f-F in Fig.5.Installation for sanitary cleaning gas emissions includes scrubber 1 with the centrifugal nozzles 2 and 3 in the upper part, connected from the top to the concentric plan 4 on two horizontal levels connected with branch pipes 5 and 6, pump 7, the feed to the nozzles 5 and 6 of the organic solvent from the collections of 8 organic solvent, a centrifugal atomizer 2 and 3, made in the form of the bottom 9 and the top 10 cones with vertical axes, between which the guide disks 11 and 12, in which the peripheral part is made of arched slots 13 and 14 of the bulge top with axes, directed at an acute angle to the radius from the periphery to the centre, and in opposite directions in adjacent nozzles 2 and 3 Thor 4, the lower cone 9 is installed on the top of the pipe Torah 4, and the upper cone 10 is provided with a vertical hole with an outer diverging cone nozzle 15 for input gas emissions from soot connected to the scrubber 1 side in the upper part below the level of the spray nozzle 2 and 3, the nozzle 16 for discharge of the cleaned gas emissions connected to the scrubber side bottom with an inclination in the direction of the scrubber 1, the pipe 17 from the bottom to drain the organic solution is than the scrubber 1, to the lower part side is connected to inlet pipe 16, which is also the outlet pipe scrubber 1, in the upper part of the water scrubber 18 is installed centrifugal nozzles 19 and 20, is connected from above to the concentric plan 21 on two horizontal levels, connected by pipes 22 and 23 to which is connected a pump 24 for supplying from collections 25 circulating water through the pipes 22 and 23 to toruses 21 circulating water to the nozzles 19 and 20, arranged similarly as the nozzles 2 and 3 of the scrubber 1, the circulating collections of organic solvent 8 is provided with a bottom glass lamps 26 to pump water pump 27 in the collections of the water circulating 25, collections circulating water 25 is equipped with top glass lamps 28 to the pump 29 organic solvent in the collections of 8, to the collections of top 8 is connected screws 30 for removal of soot together with water and an organic solvent in a distillation apparatus 31 for distillation with water vapor only organic solvent and water, steam space of the distillation apparatus is connected to the capacitor 32, the bottom of which is connected to the sump 33, to the lower part which is connected to the pump 34 for pumping water in the water collection 25, collections 8, distillation apparatus 31 are connected by tubes to the valves from the pump 36 to pump after distillation of the organic solvent residue slurry of carbon black and water in a centrifuge 37 for separating soot from the water in the water collection 38 and pump 39 for pumping water in the collector 25, and also for unloading soot and sediment delivery conveyor 40 in the dryer 41, a water scrubber 18 is supplied with the lower pipe 42 for flow of water in the collections of water 25 and the upper pipe 43 for the extraction of the purified gas emissions by the fan 44.Installation for sanitary cleaning gas emissions from soot works as follows.Gas emissions from installations for the production of carbon black containing residues of soot, entered the upper pipe 15 in the top of the scrubber 1 and move parallel down together with the flowing down of the centrifugal nozzles 2 and 3 with an organic solvent, interacting with gas emissions and absorbing soot and flowing along the lower nozzle 17 in the collections of 8 circulating organic solvent supplied from collections 8 of the pump 7 in the nozzle 2 and 3 through the nozzles 5 and 6 and toruses 4, etc.From the bottom of the scrubber 1 through the pipe 16 disposed purified gas emissions in the lower part of the water scrubber 18, in which bodnbqe 42 in the collections of water 25 and supplied from collections of water 25 by pump 24 to the nozzles 22, 23 and toruses 21 in the nozzle 19 and 20, etc.From the scrubber 18 through the upper pipe 43 purified gas emissions are exhausted by the centrifugal fan 44. In the scrubber 18 is a counter-current interaction of rising gas emissions and water flowing down, resulting in the capture and capture water from the gas emission of an organic solvent, carry out together with the gas emissions from the scrubber, as the diameter of the scrubber 1 is less than the diameter of the scrubber 18 and the velocity of the gas in the total cross section of the scrubber 1 is greater than the velocity of the gas in the total cross section of a water scrubber 18, and unit load on the fluid (water) scrubber 18 more specific load liquid (organic solvent) scrubber 1.Central nozzle 2 and 3 of the scrubber 1 and the centrifugal nozzles 19 and 20 water scrubber 18 is set to the location of the outlet openings up to increase the root angle of the nozzles and thereby increasing the radius of capture flaring jets of the nozzles, since it is known that, upon exiting the jet at an angle of 45aboutto horizontally acting forces operations under the effect of the initial velocity of the jet of liquid emerging from the nozzle, and gravity and theoretically, the path length of the jet is the first section of the scrubber and will require fewer injectors scrubber for normal operation. Periodically flowing water in the collections of organic solvent 8 is drained therefrom through the lower glass lamps 26 and pump 27 in the collections of water is 25, and entering the organic solvent in the collections of 25 periodically drained therefrom through the upper glass lamps 28 and pump 29 in the collections of organic solvent 8. From collections 8 above is given by a screw 30 carbon black together with water and an organic solvent in a distillation apparatus 31, which periodically is distilled over with the water vapor of water and organic solvent vapors which are condensed in the condenser 32, where the condensate flows into the sump 33, with the lower part of which the pump 34 is pumped out the water in the collections of water 25, and the upper portion of the settling tank 33 organic solvent pumped by pump 35 in the collections of organic solvent 8. After distillation of the organic solvent from the distillation apparatus 31 by the pump 36 is pumped slurry of carbon black and water in the filtration centrifuge 37, where water is separated and diverted to the collection of water 38, where the pump 39 is served in the collection of water 25, and soot periodically unloaded onto the conveyor 40 and is fed into the dryer 41, where it is dried and then can be used for the purpose. Organic solvent and water in stanthony technology. Proposed installation uses the primary flow scrubber 1, the feed gas emission which is produced at the top level, which is the emission of gaseous emissions from soot into the atmosphere from installations for the production of carbon black, this eliminates the need for facilities hassaballah pipelines with large diameter for the gas emission from the upper levels in the lower part of the scrubber, in which countercurrent interact rising gas emissions from downstream absorbent.Due to the fact that gaseous emissions are collected in the scrubber 1 under atmospheric pressure, after the water scrubber 18 is a suction fan 44 to create the necessary pressure drop in two scrubbers 1 and 18.Proposed installation is in contrast to conventional schemes-flow interaction between the gas and the liquid used uniflow principle of interaction between the gas and the liquid in one of scrubber installation.Technical advantages of the proposed installation for sanitary cleaning gas emissions from soot in comparison with the prototype is that as the primary scrubber uses a direct-flow scrubber with supply Gaga diameter, the main scrubber, and more liquid than the main scrubber to capture away from the main scrubber organic solvent and carbon black, in the repeated use of an organic solvent and water after regeneration is complete non-waste technologies, recycling of soot.Public benefit of the proposed installation for sanitary cleaning gas emissions from soot arising from the technical advantages, as compared with the prototype, is the reliability of the cleaning gas emissions from soot and prevent entrainment of organic solvent into the atmosphere through the use of additional water scrubber, and also due to the principle of operation of the installation completely waste-free technologies. INSTALLATION FOR SANITARY CLEANING GAS EMISSIONS FROM carbon black, including the scrubber nozzles in the upper part, a collection of circulating high-boiling organic solvent, a centrifugal pump for supplying the solvent to the spray nozzles, the nozzles for input gas emissions from soot and discharge of the cleaned gas emissions, characterized in that the connection of the input gas emissions from soot connected to the scrubber side at the top is outinen to the scrubber side bottom with an inclination in the direction of the scrubber, the spray nozzle is connected from the top to the nipples to a concentric plan, located on two levels, the nozzle is made in the form of two conical elements with vertical axes, between which is tightly clamped horizontal disks with arched slots bulge upwards, arranged in concentric circles, with the axes of the arched slots directed at an acute angle to the radius from the periphery to the center, the upper conical elements have a vertical output apertures with divergent cone and the lower cone elements have vertical holes for fastening to pipe tori, the direction of the axis of the arched slots in the guide disks adjacent the Torah nozzles opposite, next to the main scrubber is mounted in a water scrubber to the bottom of which is connected the outlet of the purified gas emissions from the primary scrubber, in the upper part of the water scrubber on two levels set concentric Torah with spray nozzles larger than in the primary scrubber, to the upper part of the water scrubber is connected a branch pipe connected with the suction fan, a nozzle connected with a centrifugal pump connected to the collection circularqueue the first solvent is supplied with the lower glass skylight to divert water and auger for unloading from the top of soot, the plant is equipped with equipment for the distillation of water from the soot of an organic solvent, condensing the vapors of an organic solvent and water, separating them and feed in the collections of water and an organic solvent and drying the soot from the water.
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.