Installation for purification of gas emissions from soot

 

(57) Abstract:

The invention relates to the field of sanitary cleaning of industrial gas emissions from dust and impurities with recovery of the absorbent with a view to its reuse and recycling of absorbed substances. The installation includes the chimney, reflector, hood, tilting pan, horizontal Torah with spray nozzles, collections of circulating absorbent, centrifugal pumps for supply of absorbent material on the nozzle and provided with two circulating systems of absorbent material, one of which uses a high-boiling organic solvent for absorption of soot and connected to the nozzles of the upper torus, and the second system uses as the absorbent circulating water supplied to the nozzles of the lower torus. The installation is also provided with a settling tank for separating water from the solvent and auger for removal of soot aggregates for removal of the solvent from soot and dry soot. 9 Il.

The invention relates to the field of protection of air from pollution by industrial waste in the form of a solid dispersed particles and harmful gases and may find application in chemical, petrochemical, metallurgical, energetically emission from dust and harmful gases, containing flue installed over the reflector, the Central tube for the fluid above the reflector, the device for distributing liquid, a cap placed over the chimney with a reflector, a circular tray with a sloping bottom, a packing layer, irrigated cleaning liquid gas, exhaust fan for exhausting the cooled clean gas [1]

A disadvantage of the known installation is the low effectiveness and efficiency of gas purification due to uneven distribution and interaction of liquid and gas, high hydraulic resistance to the flow of gas and having to install an exhaust fan for exhausting the cooled gas.

As you know, 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. Carbon black

product of incomplete combustion or thermal decomposition of carbonaceous substances is a fine dispersed powder consisting of fine particles, mainly of carbon and 88.8% to 99.6% of the hydrogen from 0.1% to 1% oxygen from 0.1% to 4.5% of the average particle size of carbon black extending t the W diesel oil (kerosene), which can be used as the absorbent due to the high boiling point of about 270oC.

The technical result of the invention is to improve the effectiveness and efficiency of purification of gas emissions from soot.

The technical result is achieved by the fact that the installation for the purification of gas emissions from soot containing flue installed over the reflector, a cap over the chimney with a reflector device for distributing a liquid outlet for discharging liquid, a device for distributing fluid made in the form of upper and lower horizontal tori, to which the top is attached centrifugal spray nozzles, made in the form of a vertical upper and lower cones, between which is rigidly fixed horizontal guides discs placed on the periphery of the arched slots bump up with the axes directed at an acute angle to the radius from the periphery to the center, and the direction of the axes in adjacent nozzles tori opposite, while in the upper cones on top with holes in the form of an inverted cone and the lower cone bottom with holes for attaching the nozzle to the nozzle tori, the plant is equipped with sat is Okami the top of the torus, and the second nozzles of the lower torus, a settling tank for separating water from an organic solvent, connected with the circulating collections of organic solvent and water, distilling apparatus for the distillation of soot organic solvent with water, condenser, condensate sump with collections of organic solvent and water, dryers for soot, and the circulating collections of the organic solvent is made with augers for soot connected to a distillation apparatus, and the collections of the circulating water is supplied to the upper glass lamps connected with the circulating collections of organic solvent.

The invention is illustrated in the drawing, where Fig. 1 shows a schematic diagram of the installation of Fig. 2 schematically depicts a fragment of the installation, vertical section; Fig. 3 is a view along a-a of Fig. 2; Fig. 4 a section in the plane b-B of Fig. 3; Fig. 5 cut in the plane In Fig. 3; Fig. 6 cut in the plane G-G of Fig. 4; Fig. 7 cut in the plane d-D of Fig. 6; Fig. 8 cut in the plane e-E of Fig. 6; Fig. 9 - section in the plane f-F of Fig. 5.

Installation chimney cleaning gas emissions from carbon black includes (Fig. 1-9) vertical flue 1 from the right, equal to not less than 0.25 of the diameter of the pipe for the permanence of the cross section for the passage of flue gases above the conical reflector 2 asymmetrically in relation to the chimney 1 set cylindrical cap 3, the lower edge of which is situated below the upper edge of the chimney 1, the diameter of the cap 3 is such that a transverse annular cross-section between the cap 3 and the chimney was not less than the cross-section of the chimney 1 are the upper ring of the Torah 4 in the horizontal plane, connected to the inlet pipe 5, are located below the bottom ring of the Torah 6 with the inlet pipe 7, to the annular factors 4 and 6 are connected on the top of the nozzles alternately centrifugal nozzles 8 and 9, made in the form of two truncated cones with the bottom 10 and top 11 connected to the flanges by bolts, between which is tight guides disks 12 and 13, in which the peripheral part is made by the bulge upward arched slots 14 and 15, respectively, with the axes directed at an acute angle to the radius from the periphery to the center, and the direction of the arched slots 14 and 15 in the guide disks 12 and 13 in opposite adjacent on the same Torah 4 or 6, at the bottom of the cones 10 nozzles 8 and 9 are made vertical of the vertical holes with conical expanding output up under the hood 3 to the chimney 1 ring attached to the pallet 16 with an inclined bottom 17, the upper edge of the pallet 16 are separated from the lower edges of the hood 3 vertically at a distance of not less than 1/8 of the diameter of the cap, and the inner diameter of annular tray 16 is not less than the diameter of the cap 3, to the lower part of the bottom 17 of the pallet 16 is connected to the pipe 18 for removal of the pulp in the tank 19, the upper pipe which is connected to the collectors of organic solvent 20 pump 21 for supplying an organic solvent to the nozzle 5 of the upper torus 4, the lower pipe of the sump 19 is connected to the collectors of the water 22 by pump 23 for supplying water to the nozzle 7 of the lower torus 6, to the upper parts of the collections of water 22 is connected glass lamps 24 for pumping the organic solvent pump 25 in the collections of organic solvent 20, to the upper parts of the collections of organic solvent 20 is connected screws 26 for removal of soot in the distillation apparatus 27 for distillation of soot all vapor of organic solvent and water, connected with a capacitor 28 for condensing vapor of organic solvent and water, connected to the sump 29, the upper pipe which is connected to the collector of an organic solvent 30 and pump 31 for pumping Organisationen with the collection of water 32 and pump 33 for pumping water into the collection circulating water 22, distillation apparatus 27 is supplied by a pump 34 to supply the remaining slurry of carbon black and water in a centrifuge 35 for separating the water and drain it to the collection of water 36 from the pump 37 for feeding into the collection circulating water 22, centrifuge 35 is equipped with a tray to drain the filtered soot on the conveyor 38 and the filing of soot in the dryer 39, from which the conveyor 40 carbon black is supplied for use.

Installation for purification of gas emissions from soot works as follows.

The hot flue gases flow upward through the chimney 1 (Fig. 1-9) under the action of the thrust generated by the temperature difference (and hence density) of flue gas and ambient air, and are reflected by the conical reflector 2 in the annular section between the cap 3 and the pipe 1, which are moving down.

Circulating an organic solvent is supplied by the pump 21 from collections in the top 20 tor 4 and the nozzle 5 and the centrifugal nozzles 8 and 9, when the output of which an organic solvent is dispersed and interacts with gas emissions and captures and wets soot flows down, interacting with dispersed by water, which is also fed by a pump 23 from collections 22 at the bottom Thor 6 through the pipe 7 and the centrifugal fo what storyteller, captures an organic solvent and carbon black, as the specific volume of water supplied to the nozzle is much more specific volumes of organic solvent. Water and an organic solvent after the interaction with the gas emissions and removals of carbon black flowing into the sump 16 with an inclined bottom 17 and the pipe 18 and the pipe in the tank 19, from which the organic solvent is from above is given to the collectors 20 and the bottom water is diverted to the collector 22 from which the pumps 21 and 23 are fed through nozzles 8 and 9 and so on

Organic solvent accumulated in the collector 22 through the upper lights 24 is a heat pump 25 in the circulating collections of organic solvent 20. From the upper part of the collections of organic solvent 20 soot is given by screws 26 in a distillation apparatus 27, in which the soot Argonauts with water vapor the entire organic solvent and water, the vapors from the distillation apparatus is disposed in the condenser 28, where ions are condensed, the condensate flows into the sump 29, with the upper part of which is given to an organic solvent in the collector 30 from which the pump is pumped into the circulating collections of organic solvent 20, and the lower pipe of the sump 29 is diverted water sat in the tah 27 slurry of carbon black and water is pumped by pump 34 into the filter centrifuge 35, in which the filtered water flowing in the collector 36, whence it is pumped by pump 37 in the collection circulating water 22, and wet soot is discharged periodically from the centrifuge 35 on the conveyor 38, which is fed into the dryer 39, from which the dried soot conveyor 40 is supplied for the purpose.

Carbon black is a fine material, which when capturing an organic solvent (diesel oil or diesel fuel) partially wetted, so can a considerable amount of time to float on the surface of an organic solvent, despite the relatively higher density of soot (about 1800 kg/m3in solid) in comparison with organic solvent (average 800 kg/m3).

Technical advantages of the proposed installation for the purification of gas emissions from the chimneys of soot is to improve the effectiveness and efficiency of treatment by dispersing an organic solvent at low unit costs for cleaning and use of circulating water to clean the regeneration of the solvent disposal of soot.

Public benefit of the proposed facility, resulting from the technical advantages are povremeni air pollution soot waste-free technology.

The expected economic effect from implementation of the proposed facility compared to the prototype can be provided by reducing the impurity content of soot in the gas emissions discharged via stacks to the atmosphere and prevent damage to nature and to man, and through utilization of the soot and use them for their intended purpose.

Installation for purification of gas emissions from soot containing flue installed over the reflector, a cap over the chimney with a reflector device for distributing liquid melt nozzles, ring tray with sloped bottom with a pipe to drain the fluid, characterized in that the device for distributing fluid made in the form of upper and lower horizontal tori, to which the top is attached centrifugal spray nozzles, made in the form of a vertical upper and lower cones, between which is rigidly fixed horizontal guides discs placed on the periphery of the arched slots camber up with axes, directed at an acute angle to the radius from the periphery to the center, and the direction of the axes in adjacent nozzles tori opposite, while in the upper cones on top wyok to bend tori, the installation is supplied with circulating collections of organic solvent and the water circulating, the first of which is connected to the nozzles of the upper torus, and the second nozzles of the lower torus, a settling tank for separating water from an organic solvent, connected with the circulating collections of organic solvent and water, distilling apparatus for the distillation of soot organic solvent with water, condenser, condensate sump with collections of organic solvent and water, the dryer soot, and the circulating collections of the organic solvent is made with augers for soot connected to a distillation apparatus, and the collections of the circulating water is supplied to the upper glass lanterns, connected with the circulating collections of organic solvent.

 

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