CN109569161B - Special treatment method for blast furnace slag flue gas treatment system - Google Patents
Special treatment method for blast furnace slag flue gas treatment system Download PDFInfo
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Abstract
The invention relates to a special treatment method for a blast furnace slag flue gas treatment system in the field of environmental protection, which comprises the following steps of starting a waste gas discharge system, a waste gas treatment system, a waste gas dedusting system, a waste gas output system and a waste gas input system thereof in sequence from a rear end process to a front end process; conveying a large amount of sulfur-containing and nitrate-containing waste gas and a large amount of smoke dust discharged in the blast furnace ironmaking process to a waste gas storage system through a waste gas input system; the invention can provide a treatment method for treating blast furnace slag waste gas and smoke dust thereof by a special smoke treatment system, increases the contact area and the pressure, increases the atomization surface, and simultaneously carries out large-batch smoke dust treatment and then carries out treatment on sulfur-containing and nitrate-containing waste gas and residual smoke dust thereof, thereby saving water resources, reducing the consumption of water and saving cost.
Description
Technical Field
The invention relates to a special treatment method for a blast furnace slag flue gas treatment system in the field of environmental protection.
Background
Blast furnace slag is a solid waste formed from gangue in the ore, ash in the fuel and non-volatile components in the solvent (typically limestone) during the blast furnace iron making process; mainly contains oxides of calcium, silicon, aluminum, magnesium and iron and a small amount of sulfide; blast furnace slag, which is a slag discharged in a blast furnace ironmaking process using industrial solid wastes, is also called blast furnace slag and can be divided into steelmaking pig iron slag, casting pig iron slag, ferromanganese slag and the like; in China, the Soviet Union and other countries, titanomagnetite is used for iron making, and vanadium-titanium blast furnace slag is discharged; according to different ore grades, 0 is discharged for each 1 ton of iron. 3-1 ton of slag, wherein the lower the ore grade is, the larger the slag discharge amount is; in 1862, Germany began to utilize blast furnace slag; after the middle of the 20 th century, the comprehensive utilization of blast furnace slag is rapidly developed; the utilization rate of Japan in 1980 is 85 percent, the utilization rate of Soviet Union in 1979 is more than 70 percent, and the utilization rate of China in 1981 is 83 percent; although the slag is widely utilized, the generated smoke and ash slag should be treated in time, so that the pollution to the air is reduced; the dust (including fly ash and carbon black), sulfur and nitrogen oxides contained in the flue gas are all substances polluting the atmosphere, and the emission index of the flue gas can reach several times to dozens of times of the specified index of environmental protection without purification. Measures for controlling the emission of the substances include pretreatment before combustion, improvement of combustion technology, dust removal, desulfurization, denitration and the like; with tall chimneys only the concentration of pollutants in the atmosphere in the area near the chimney can be reduced.
Disclosure of Invention
The invention aims to provide a special treatment method for a blast furnace slag flue gas treatment system, which can provide a treatment method for treating blast furnace slag waste gas and smoke dust thereof through the special flue gas treatment system.
The purpose of the invention is realized as follows: a special treatment method for a blast furnace slag flue gas treatment system comprises a waste gas input system, wherein a waste gas storage system is correspondingly arranged on the waste gas input system, a waste gas output system is arranged beside the waste gas storage system, a waste gas distribution system is correspondingly arranged on the waste gas output system, and the waste gas distribution system is directly connected with a waste gas dedusting system; the waste gas dedusting system is correspondingly provided with a waste gas treatment system, and the waste gas dedusting system is connected with the waste gas treatment system through a plurality of groups of waste gas inlet pipelines; the next door of exhaust-gas treatment system still cooperates and is provided with exhaust-gas discharge system, exhaust-gas treatment system passes through exhaust-gas discharge pipeline and is connected with exhaust-gas discharge system, its characterized in that includes following step:
the method comprises the following steps that firstly, a waste gas discharge system, a waste gas treatment system, a waste gas dedusting system, a waste gas output system and a waste gas input system thereof are started in sequence from a rear end process to a front end process; conveying a large amount of sulfur-containing and nitrate-containing waste gas and a large amount of smoke dust discharged in the blast furnace ironmaking process to a waste gas storage system through a waste gas input system;
blowing a large amount of waste gas and smoke dust thereof into a waste gas storage system for large-particle sedimentation, and when the waste gas is stored to a certain amount, conveying the waste gas and the smoke dust of each waste gas storage system to a main inlet of a waste gas dedusting system by a waste gas distribution system through a first branch pipeline, a second branch pipeline and an Nth branch pipeline of the waste gas output system;
step three, during work, the first gate, the second gate and the Nth gate can control the flow of the waste gas and the smoke dust thereof, and meanwhile, the first branch pipeline, the second branch pipeline and the Nth branch pipeline are connected in series through the automatic gate to realize a shared pipeline;
step four, the flue gas enters a waste gas dust removal system for smoke treatment, a reverse gas ash removal device is matched with a dust removal cloth bag to blow 90% of the smoke, and then the smoke falls into a settling chamber for settling;
step five, the untreated waste gas and the residual 10 percent of smoke dust thereof enter a waste gas treatment buffer chamber of the waste gas treatment system through a plurality of waste gas inlet openings, the waste gas and the smoke dust entering through the uppermost waste gas inlet opening can rush to the closest buffer baffle plate, the waste gas and the smoke dust entering through the middle waste gas inlet opening can rush to the buffer baffle plate at the middle position, and the waste gas and the smoke dust entering through the lowermost waste gas inlet opening can rush to the farthest buffer baffle plate; in the waste gas treatment system, waste gas and smoke dust thereof flow from bottom to top; the buffer baffle is horizontally arranged from near to far, the length of the buffer baffle is sequentially increased from near to far, the waste gas and the smoke dust impact the surface of the buffer baffle, and the filling coefficient of the waste gas and the smoke dust in the main buffer chamber reaches more than 90% through the turbulent flow of the buffer baffle;
step six, when a certain amount of the waste gas and the smoke dust are filled, the waste gas and the smoke dust in the main buffer chamber are extruded by the following waste gas and smoke dust, gradually float upwards and enter a first packing layer, and then the waste gas containing sulfur and nitre and the residual 10% of smoke dust are filtered for one time;
step seven, the waste gas and the smoke dust entering the first spraying layer are sprayed for the first time through a large amount of atomized solution sprayed by the first spray head; the wastewater circulating system arranged by matching with the first spraying layer and the second spraying layer continuously provides water required by spraying;
step eight, rising to a second packing layer for secondary filtration, rising to a second spraying layer for secondary spraying treatment after secondary filtration, and increasing the contact area and the spraying amount of a spraying pipe through a horizontal S-shaped spraying pipeline during secondary spraying treatment, wherein the spraying efficiency is more than 5 times of that of the first spraying layer; the horizontal S-shaped spray pipe is arranged in the second spray layer, and a circular water storage tank is arranged at the position of the horizontal S-shaped spray pipe close to the third packing layer and the second packing layer respectively;
step nine, the residual waste gas and the residual 1% of smoke dust thereof are thoroughly purified and treated through a third packing layer; the thoroughly treated waste gas enters a waste gas discharge system through a waste gas discharge pipeline and is finally discharged.
When the invention works, step one, starting the waste gas discharge system, the waste gas treatment system, the waste gas dedusting system, the waste gas output system and the waste gas input system thereof in sequence from the back-end process to the front-end process; conveying a large amount of sulfur-containing and nitrate-containing waste gas and a large amount of smoke dust discharged in the blast furnace ironmaking process to a waste gas storage system through a waste gas input system;
blowing a large amount of waste gas and smoke dust thereof into a waste gas storage system for large-particle sedimentation, and when the waste gas and the smoke dust thereof are stored to a certain amount, conveying the waste gas and the smoke dust thereof of each waste gas storage system to a total outlet of a waste gas dedusting system by a waste gas output system through a first branch pipeline, a second branch pipeline and an Nth branch pipeline of a waste gas distribution system;
step three, during work, the first gate, the second gate and the Nth gate can control the flow of the waste gas and the smoke dust thereof, and meanwhile, the first branch pipeline, the second branch pipeline and the Nth branch pipeline are connected in series through the automatic gate to share the pipeline;
step four, the flue gas enters a waste gas dust removal system for smoke treatment, a reverse gas ash removal device is matched with a dust removal cloth bag to blow 90% of the smoke, and then the smoke falls into a settling chamber for settling;
step five, the untreated waste gas and the residual 10 percent of smoke dust enter the waste gas treatment buffer chamber through the plurality of waste gas inlet openings, the uppermost waste gas and the smoke dust can rush to the closest buffer baffle, the middle waste gas and the smoke dust can rush to the middle buffer baffle, and the lowermost waste gas and the smoke dust can rush to the farthest buffer baffle; through the turbulent flow of the buffer baffle, the filling coefficient of the waste gas and the smoke dust in the main buffer chamber reaches more than 90 percent;
step six, when a certain amount of the waste gas and the smoke dust are filled, the waste gas and the smoke dust in the main buffer chamber are extruded by the following waste gas and smoke dust, gradually float upwards and enter a first packing layer, and then the waste gas containing sulfur and nitre and the residual 10% of smoke dust are filtered for one time;
step seven, the waste gas and the smoke dust entering the first spraying layer are sprayed for the first time through a large amount of atomized solution sprayed by the first spray head; the wastewater circulating system arranged by matching with the first spraying layer and the second spraying layer continuously provides water required by spraying;
step eight, rising to a second packing layer for secondary filtration, rising after the secondary filtration for secondary spraying treatment, increasing the contact area and the spraying amount of a spraying pipe through an S-shaped spraying pipeline during the secondary spraying treatment, wherein the spraying efficiency is more than 5 times of that of the first spraying layer;
step nine, the residual waste gas and the residual 1% of smoke dust thereof are thoroughly purified and treated through a third packing layer; the thoroughly treated waste gas enters a waste gas discharge system through a waste gas discharge pipeline and is finally discharged.
The invention has the beneficial effects that the invention can provide a treatment method for treating blast furnace slag waste gas and smoke dust thereof by a special smoke treatment system, the contact area is increased and the pressure is increased at the same time, the atomization surface is increased, and simultaneously, the treatment of large batch of smoke dust is firstly carried out and then the treatment of sulfur-containing and nitrate-containing waste gas and residual smoke dust thereof is carried out, thereby saving water resources, reducing the consumption of water and saving cost.
As a further improvement of the invention, the spraying area is increased as much as possible; and a circular water storage tank is arranged in the second spraying layer of the S-shaped spraying pipe and is close to the third filling layer and the second filling layer respectively.
As a further improvement of the invention, the large-particle smoke dust can be quickly discharged to avoid blockage; and an air-tight device is arranged below the waste gas storage system in a matching way, and a dust collection bag is arranged below the air-tight device.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a partial first front view of the present invention.
Fig. 3 is a partial front view of the present invention.
Fig. 4 is a front view of fig. 2 at a.
Fig. 5 is a front view at B in fig. 2.
Fig. 6 is a front view at C of fig. 3.
Wherein, 1 waste gas input system, 2 waste gas storage system, 3 waste gas output system, 4 waste gas distribution system, 5 waste gas dust removal system, 6 waste gas treatment system, 7 waste gas inlet pipeline, 8 waste gas exhaust system, 9 waste gas exhaust pipeline, 10 first packing layer, 11 first spray layer, 12 second packing layer, 13 second spray layer, 14 third packing layer, 15 waste water circulation system, 16 waste gas inlet port, 17 main buffer chamber, 18 buffer baffle, 19 filter plate, 20 first spray pipe, 21 first spray head, 22S-shaped spray pipe, 23 upper connecting part, 24 lower connecting part, 25 left pipeline, 26 right pipeline, 27 left spray head, 28 right spray head, 29 waste water tank body, 30 water tank body, 31 overflow hole, 32 water pipe, 33 stirring shaft, 34 stirring paddle, 35 second branch pipeline, 36 first connecting port, 37 second connecting port, 38 total inlet, 39 first branch pipeline, and, 40 circular water storage tank.
Detailed Description
The purpose of the invention is realized as follows: a special treatment method for a blast furnace slag flue gas treatment system comprises a waste gas input system 1, wherein the waste gas input system 1 is correspondingly provided with a waste gas storage system 2, a waste gas output system 3 is arranged beside the waste gas storage system 2, a waste gas distribution system 4 is correspondingly arranged on the waste gas output system 3, and the waste gas distribution system 4 is directly connected with a waste gas dedusting system 5; a waste gas treatment system 6 is correspondingly arranged beside the waste gas dust removal system 5, and the waste gas dust removal system 5 is connected with the waste gas treatment system 6 through a plurality of groups of waste gas inlet pipelines 7; exhaust gas exhaust system 8 is still provided with in the cooperation beside exhaust gas treatment system 6, exhaust gas treatment system 6 is connected with exhaust gas exhaust system 8 through exhaust gas discharge pipeline 9, its characterized in that includes following step:
the method comprises the following steps that firstly, a waste gas discharge system 8, a waste gas treatment system 6, a waste gas dedusting system 5, a waste gas output system 3 and a waste gas input system 1 thereof are started in sequence from a rear end process to a front end process; a large amount of sulfur-containing and nitrate-containing waste gas and a large amount of smoke dust discharged in the blast furnace ironmaking process are conveyed into a waste gas storage system 2 through a waste gas input system 1;
blowing a large amount of waste gas and smoke dust thereof into the waste gas storage system 2 to settle large particles, and when the waste gas is stored to a certain amount, conveying the waste gas and the smoke dust thereof in each waste gas storage system 2 to a main inlet 38 of the waste gas dedusting system 5 by the waste gas output system 3 through the first branch pipeline 39, the second branch pipeline 35 and the Nth branch pipeline through the waste gas distribution system 4;
step three, in the working process, the first gate, the second gate and the Nth gate can control the flow of the waste gas and the smoke dust thereof, and meanwhile, the first branch pipeline 39, the second branch pipeline 35 and the Nth branch pipeline are connected in series through the automatic gate to share the pipeline;
step four, the flue gas enters a waste gas dust removal system 5 for smoke treatment, a reverse gas ash removal device is matched with a dust removal cloth bag to blow 90% of the smoke, and then the smoke falls into a settling chamber for settling;
step five, the untreated waste gas and the residual 10% of smoke dust enter the waste gas treatment buffer chamber through the plurality of waste gas inlet ports 16, the uppermost waste gas and smoke dust can rush to the nearest buffer baffle 18, the middle waste gas and smoke dust can rush to the middle buffer baffle 18, and the lowermost waste gas and smoke dust can rush to the farthest buffer baffle 18; in the waste gas treatment system, waste gas and smoke dust thereof flow from bottom to top; the buffer baffle 18 is horizontally arranged from near to far, the length of the buffer baffle 18 is sequentially increased from near to far, the waste gas and the smoke dust impact the surface of the buffer baffle 18, and the filling coefficient of the waste gas and the smoke dust in the main buffer chamber 17 reaches more than 90% through the turbulent flow of the buffer baffle 18;
step six, when a certain amount of the waste gas and the smoke dust are filled, the waste gas and the smoke dust in the main buffer chamber 17 are extruded by the following waste gas and smoke dust, gradually float upwards and enter the first filler layer 10, and then the waste gas containing sulfur and nitre and the residual 10% of smoke dust are filtered for one time;
step seven, the waste gas and the smoke dust entering the first spraying layer 11 are sprayed for the first time through a large amount of atomized solution sprayed by the first spray head; a wastewater circulating system 15 arranged in cooperation with the first spraying layer 11 and the second spraying layer 13 continuously provides water required for spraying;
step eight, rising to a second packing layer 12 for secondary filtration, rising to a second spraying layer for secondary spraying treatment after secondary filtration, and increasing the contact area and the spraying amount of a spraying pipe through a horizontal S-shaped spraying pipe 22 during secondary spraying treatment, wherein the spraying efficiency is more than 5 times of that of the first spraying layer 11; the horizontal S-shaped spray pipe 22 is arranged in the second spray layer, and a circular water storage tank is arranged at the position close to the third packing layer and the second packing layer respectively;
step nine, the residual waste gas and the residual 1% of smoke dust thereof are completely purified through the third filler layer 14; the thoroughly treated exhaust gas enters the exhaust gas discharge system 8 through the exhaust gas discharge pipe 9 and is finally discharged.
The S-shaped spray pipe 22 is provided with a circular water storage tank 40 at the position close to the third filling layer and the second filling layer respectively in the second spray layer 13.
And an air-tight device is arranged below the waste gas storage system 2 in a matching way, and a dust collection bag is arranged below the air-tight device.
When the system works, the waste gas discharge system 8, the waste gas treatment system 6, the waste gas dedusting system 5, the waste gas output system 3 and the waste gas input system 1 thereof are sequentially started from the rear end process to the front end process, a large amount of sulfur-containing and nitrate-containing waste gas and a large amount of smoke dust thereof can be discharged while the slag discharged in the blast furnace ironmaking process is discharged, and the waste gas input system 1 blows a large amount of waste gas and smoke dust thereof into the waste gas storage system 2 for large particle sedimentation; then when the waste gas is stored to a certain amount, the waste gas output system 3 starts to work, the waste gas output system 3 conveys the waste gas of each waste gas storage system 2 to the main inlet 38 of the waste gas dust removal system 5 through the waste gas distribution system 4 through the first branch pipeline 39, the second branch pipeline 35 and the Nth branch pipeline, and the waste gas enters the waste gas treatment buffer chamber together, once a certain waste gas storage system 2 goes wrong or the waste gas dust removal system 5 is overloaded or the waste gas treatment system 6 is overloaded, the computer can automatically control the first gate, the second gate and the Nth gate to control the flow rate so as to reduce the flow rate; meanwhile, the computer can realize the series connection of the first branch pipeline 39, the second branch pipeline 35 and the Nth branch pipeline through an automatic gate, so that a shared pipeline is realized, and the working reliability is improved; a large amount of waste gas and smoke dust enter a waste gas dust removal system 5 for treatment, a reverse gas ash removal device in the waste gas dust removal system 5 is matched with a dust removal cloth bag to perform blowing treatment on 90% of the smoke dust, and then the smoke dust falls into a settling chamber; then, untreated waste gas and the remaining 10% of smoke dust thereof enter the waste gas treatment buffer chamber through the plurality of waste gas inlet ports 16, and as the waste gas inlet ports 16 are sequentially arranged from top to bottom, when the waste gas and the smoke dust thereof are flushed into the main buffer chamber 17, the uppermost waste gas and the smoke dust can be flushed onto the closest buffer baffle 18, the middle waste gas and the smoke dust can be flushed onto the middle buffer baffle 18, and the lowermost waste gas and the smoke dust can be flushed onto the farthest buffer baffle 18; because the buffer baffle 18 is arranged in an arc shape, waste gas and smoke dust cannot enter the first packing layer 10 at the upper part at a time, but the staying time in the main buffer chamber 17 is prolonged through the turbulent flow of the buffer baffle 18, so that the filling coefficient of the waste gas and the smoke dust in the main buffer chamber 17 reaches more than 90%; the waste gas and the smoke dust staying in the main buffer chamber 17 are extruded by the following waste gas and smoke dust, gradually float upwards and enter the first packing layer 10, the first packing layer 10 can sequentially filter the waste gas containing sulfur and nitrate and the rest 10% of smoke dust, and the waste gas and the smoke dust pass through the first packing layer 10 and then enter the first spraying layer 11; a large amount of atomized solution is sprayed by the first spray heads 21 which are sequentially arranged on the first spray pipe 20 to carry out primary spray treatment on the waste gas and the smoke dust; then the mixture rises to the second filler layer 12 for secondary filtration; then enters a second spraying layer 13; the S-shaped spray pipes 22 in the second spray layer 13 spray a large amount of atomized solution at high pressure and carry out secondary spray treatment on the waste gas and smoke dust, in the process, the most important process is also realized, the space of the second spray layer 13 is about 1.5 times of the space of the first spray layer 11, but in the second spray layer 13, as the left side pipeline 25 and the right side pipeline 26 are arranged in a V shape, the spray amount of the spray pipes is increased, the contact area is also increased, the spray efficiency is more than 5 times of the efficiency of the first spray layer 11 in the same spray time, and meanwhile, the staggered left side spray nozzles 27 and the right side spray nozzles 28 can repeatedly spray the waste gas and smoke dust; the spraying efficiency is improved, so far, the residual waste gas and the residual 1% of smoke dust thereof can be thoroughly purified and treated through the third packing layer 14, and the thoroughly treated waste gas enters the waste gas discharge system 8 through the waste gas discharge pipeline 9 and is finally discharged; the wastewater after atomized spraying directly flows into the wastewater tank 29, is purified and then enters the water storage tank 30 through the overflow hole 31, and the stirring motor continuously stirs the wastewater through the stirring blade 34, so that the phenomenon that impurities in the water storage tank 30 are precipitated to influence the use of the wastewater circulating system 15 is avoided; therefore, 100% harmless treatment of waste gas and smoke dust is realized through the waste gas dust removal system 5 in cooperation with the first spraying layer 11, the second spraying layer 13 and the first packing layer 10, the second packing layer 12 and the third packing layer 14, energy is saved, and atmospheric pollution is avoided.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (2)
1. A special treatment method for a blast furnace slag flue gas treatment system comprises a waste gas input system, wherein the waste gas input system is correspondingly provided with a waste gas storage system, a waste gas output system is arranged beside the waste gas storage system, the waste gas output system is correspondingly provided with a waste gas distribution system, and the waste gas distribution system is directly connected with a waste gas dedusting system; the waste gas dedusting system is correspondingly provided with a waste gas treatment system, and the waste gas dedusting system is connected with the waste gas treatment system through a plurality of groups of waste gas inlet pipelines; the next door of exhaust-gas treatment system still cooperates and is provided with exhaust-gas discharge system, exhaust-gas treatment system passes through exhaust-gas discharge pipeline and is connected with exhaust-gas discharge system, its characterized in that includes following step:
the method comprises the following steps that firstly, a waste gas discharge system, a waste gas treatment system, a waste gas dedusting system, a waste gas output system and a waste gas input system thereof are started in sequence from a rear end process to a front end process; conveying a large amount of sulfur-containing and nitrate-containing waste gas and a large amount of smoke dust discharged in the blast furnace ironmaking process to a waste gas storage system through a waste gas input system;
blowing a large amount of waste gas and smoke dust thereof into a waste gas storage system for large-particle sedimentation, and when the waste gas is stored to a certain amount, conveying the waste gas and the smoke dust of each waste gas storage system to a main inlet of a waste gas dedusting system by a waste gas distribution system through a first branch pipeline, a second branch pipeline and an Nth branch pipeline of the waste gas output system;
step three, during work, the first gate, the second gate and the Nth gate can control the flow of the waste gas and the smoke dust thereof, and meanwhile, the first branch pipeline, the second branch pipeline and the Nth branch pipeline are connected in series through the automatic gate to realize a shared pipeline;
step four, the flue gas enters a waste gas dust removal system for smoke treatment, a reverse gas ash removal device is matched with a dust removal cloth bag to blow 90% of the smoke, and then the smoke falls into a settling chamber for settling;
step five, the untreated waste gas and the residual 10 percent of smoke dust thereof enter a waste gas treatment buffer chamber of the waste gas treatment system through a plurality of waste gas inlet openings, the waste gas and the smoke dust entering through the uppermost waste gas inlet opening can rush to the closest buffer baffle plate, the waste gas and the smoke dust entering through the middle waste gas inlet opening can rush to the buffer baffle plate at the middle position, and the waste gas and the smoke dust entering through the lowermost waste gas inlet opening can rush to the farthest buffer baffle plate; in the waste gas treatment system, waste gas and smoke dust thereof flow from bottom to top; the buffer baffle is horizontally arranged from near to far, the length of the buffer baffle is sequentially increased from near to far, the waste gas and the smoke dust impact the surface of the buffer baffle, and the filling coefficient of the waste gas and the smoke dust in the main buffer chamber reaches more than 90% through the turbulent flow of the buffer baffle;
step six, when a certain amount of the waste gas and the smoke dust are filled, the waste gas and the smoke dust in the main buffer chamber are extruded by the following waste gas and smoke dust, gradually float upwards and enter a first packing layer, and then the waste gas containing sulfur and nitre and the residual 10% of smoke dust are filtered for one time;
step seven, the waste gas and the smoke dust entering the first spraying layer are sprayed for the first time through a large amount of atomized solution sprayed by the first spray head; the wastewater circulating system arranged by matching with the first spraying layer and the second spraying layer continuously provides water required by spraying;
step eight, rising to a second packing layer for secondary filtration, rising to a second spraying layer for secondary spraying treatment after secondary filtration, and increasing the contact area and the spraying amount of a spraying pipe through a horizontal S-shaped spraying pipeline during secondary spraying treatment, wherein the spraying efficiency is more than 5 times of that of the first spraying layer; the horizontal S-shaped spray pipe is arranged in the second spray layer, and a circular water storage tank is arranged at the position of the horizontal S-shaped spray pipe close to the third packing layer and the second packing layer respectively;
step nine, the residual waste gas and the residual 1% of smoke dust thereof are thoroughly purified and treated through a third packing layer; the thoroughly treated waste gas enters a waste gas discharge system through a waste gas discharge pipeline and is finally discharged.
2. The special treatment method for the blast furnace slag flue gas treatment system according to claim 1, characterized in that: and an air-tight device is arranged below the waste gas storage system in a matching way, and a dust collection bag is arranged below the air-tight device.
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| CN203417570U (en) * | 2013-08-08 | 2014-02-05 | 河北顺天电极有限公司 | Cutting chipping gas-solid separation dust collection treatment system |
| CN204337981U (en) * | 2014-11-17 | 2015-05-20 | 迈安德集团有限公司 | A kind of workshop Waste Heat Recovery and deodoration system |
| CN204637888U (en) * | 2015-05-18 | 2015-09-16 | 东营金岛环境工程有限公司 | A kind of exhaust gas processing device of oil sludge preparation, regeneration glue |
-
2018
- 2018-12-24 CN CN201811579119.3A patent/CN109569161B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203417570U (en) * | 2013-08-08 | 2014-02-05 | 河北顺天电极有限公司 | Cutting chipping gas-solid separation dust collection treatment system |
| CN204337981U (en) * | 2014-11-17 | 2015-05-20 | 迈安德集团有限公司 | A kind of workshop Waste Heat Recovery and deodoration system |
| CN204637888U (en) * | 2015-05-18 | 2015-09-16 | 东营金岛环境工程有限公司 | A kind of exhaust gas processing device of oil sludge preparation, regeneration glue |
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| CN109569161A (en) | 2019-04-05 |
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