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.

 

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