CN114534421A - Multi-stage guiding and purifying device for blast furnace flue gas and implementation method - Google Patents
Multi-stage guiding and purifying device for blast furnace flue gas and implementation method Download PDFInfo
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- CN114534421A CN114534421A CN202210298452.7A CN202210298452A CN114534421A CN 114534421 A CN114534421 A CN 114534421A CN 202210298452 A CN202210298452 A CN 202210298452A CN 114534421 A CN114534421 A CN 114534421A
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Abstract
The utility model discloses a multi-stage guiding purification device for blast furnace flue gas and an implementation method, and relates to the technical field of flue purification. Including one-level separation board, second grade separation board, upset separation subassembly and induced air subassembly, be provided with the upset separation subassembly between one-level separation board and the second grade separation board, one side that one-level separation board was kept away from to the second grade separation board is provided with the support frame, support frame and induced air subassembly swing joint. According to the multi-stage guiding purification device for the blast furnace flue gas and the implementation method, negative pressure control of the blast furnace flue gas is achieved through the air inducing assembly, the flue gas is attracted into the blast furnace flue gas, triple purification is achieved through the first-stage separation plate, the overturning separation assembly and the second-stage separation plate, impurity removal efficiency is improved, impurities in the flue gas are reduced, and the problems that in the prior art, the flue gas is too long, installation is not easy, a spraying mode is directly adopted for purification, more sewage is produced, and the later-stage sewage treatment capacity is large are solved.
Description
Technical Field
The utility model relates to the technical field of flue gas purification, in particular to a multi-stage guiding purification device for blast furnace flue gas and an implementation method.
Background
The flue gas purification device mainly comprises a cloth bag dust removal device and a spray type purification device; the purification principle of the spray type purification device is as follows: when the smoke passes through the mist space, the dust particles fall down along with the liquid drops due to the collision, interception and condensation between the dust particles and the liquid drops. The prior art spray-type cleaning devices have the disadvantage that the residence time of the flue gas in the device is too short, resulting in insufficient cleaning of the flue gas.
Chinese patent CN215352653U discloses a flue gas purification device, which comprises a flue and a spray device; the flue is a snake-shaped pipeline and is integrally and vertically arranged under the support of the plurality of supports; an opening below the flue is an inlet, and an opening above the flue is an outlet; the spraying device comprises a spraying pipe and a plurality of atomizing nozzles arranged on the spraying pipe; the spray pipe is arranged in the flue and is bent into a snake shape corresponding to the shape of the flue; the plurality of atomizing spray heads are arranged on the spray pipe; compared with the prior art, the flue of the flue gas purification device provided by the utility model is zigzag and longer, and can purify the flue gas more fully.
Although this application solves the problems in the background art to some extent, the following problems exist in this application: 1. the flue is too long and is not easy to install; 2. the spraying mode is directly adopted for purification, the produced sewage is more, and the later-stage sewage treatment capacity is large.
Disclosure of Invention
The utility model aims to provide a multi-stage guiding purification device for blast furnace flue gas and an implementation method, wherein negative pressure control of the blast furnace flue is realized through an induced draft assembly, the flue gas is attracted into the blast furnace flue, triple purification is realized through a primary blocking plate, a turnover blocking assembly and a secondary blocking plate, impurity removal efficiency is improved, and impurities in the flue gas are reduced; the second-stage blocking plate is linked with the air inducing assembly under the action of the supporting frame, and meanwhile, the linkage of the first-stage blocking plate and the second-stage blocking plate is realized by utilizing the overturning blocking assembly, the first-stage blocking plate and the second-stage blocking plate are always in a movable state, the guiding direction of smoke is continuously changed, the blocking force of the first-stage blocking plate and the second-stage blocking plate on the smoke is increased, more impurity particles in the smoke are blocked, and meanwhile, the first air hole and the second air hole are prevented from being blocked by impurities in the smoke; the first air holes and the second air holes are respectively formed in the first-stage separation plate and the second-stage separation plate, different guiding of the smoke is achieved through the first air holes and the second air holes, impurities in the smoke can be further removed through the flowing direction of the smoke, and the purifying capacity is improved; impurity is got rid of through tertiary interception impurity and two-stage direction to the flue gas in blast furnace flue, the impurity granule in the flue gas that can significantly reduce, and one-level baffler, second grade baffler and upset separation subassembly compact structure, occupation space is few, for the follow-up processing bedding foundation of flue gas to solve the problem that provides among the above-mentioned background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a multi-stage guiding and purifying device for blast furnace flue gas comprises a first-stage blocking plate, a second-stage blocking plate, a turnover blocking assembly and an induced draft assembly, wherein the turnover blocking assembly is arranged between the first-stage blocking plate and the second-stage blocking plate, a supporting frame is arranged on one side, away from the first-stage blocking plate, of the second-stage blocking plate, and the supporting frame is movably connected with the induced draft assembly;
a first rack and a second rack are respectively arranged on one side adjacent to the first-stage blocking plate and the second-stage blocking plate, the first rack and the second rack are arranged in a staggered manner, short rotating shafts are fixedly connected to the middle positions of the upper side and the lower side of the first-stage blocking plate and the second-stage blocking plate, and the first-stage blocking plate and the second-stage blocking plate are respectively movably connected with a blast furnace flue through the short rotating shafts;
the turning separation assembly comprises a central shaft, end gears and turning blades, two ends of the central shaft are movably connected with the inner wall of the blast furnace flue through bearings, the end gears are fixedly connected to the positions, close to the ends, of the central shaft, the turning blades are fixedly connected to the positions, close to the ends, of the central shaft, and the upper side and the lower side of each end gear are respectively meshed with the first rack and the second rack;
the support frame comprises a long rotating shaft, bearing seats, rotating rods and connecting pull rods, wherein the rotating rods are fixedly connected to two ends of the long rotating shaft;
the induced air subassembly includes fan main part, driving motor and extension rod, driving motor's output fixed connection fan main part, and the central point of fan main part puts fixedly connected with extension rod, the one end fixedly connected with worm wheel of extension rod, worm wheel and worm meshing, driving motor passes through the support and is connected with the inner wall of blast furnace flue.
Preferably, the first level separation plate is provided with first air holes at equal intervals, and the first air holes on the upper side and the lower side of the first level separation plate are obliquely arranged.
Preferably, one end of the first air hole on the upper side and the lower side of the primary barrier plate, which is close to the secondary barrier plate, inclines towards the transverse middle line direction of the primary barrier plate.
Preferably, the second-stage barrier plate is provided with second air holes at equal intervals.
Preferably, one end of each second air hole in two adjacent rows on the secondary barrier plate inclines oppositely.
Preferably, sealing strips are arranged on the peripheries of the first-stage barrier plate and the second-stage barrier plate.
Preferably, the bearing seat is provided with a connecting support, and the connecting support is connected with a blast furnace flue.
Preferably, the rotating rods at two ends of the long rotating shaft are arranged asymmetrically.
Preferably, the length of the end gear is greater than the width of the first rack and the second rack.
The utility model provides an implementation method of a multi-stage guiding and purifying device for blast furnace flue gas, which comprises the following steps:
s1: the purification device is arranged in a blast furnace flue, a primary blocking plate and a secondary blocking plate are respectively and movably connected with the blast furnace flue through a short rotating shaft, a driving motor works to drive a fan main body to rotate, negative pressure is generated in the blast furnace flue, and smoke is attracted to enter from one end, close to the primary blocking plate, of the blast furnace flue;
s2: the worm wheel drives the worm to rotate, so that the long rotating shaft is controlled to work, the second-stage separation plate rotates around the short rotating shaft under the action of driving and connecting the pull rod through the rotating rod, meanwhile, the second gear belt drives the end gear to rotate, the turnover blade is driven to rotate, the position of the first rack is moved, and the first-stage separation plate is pushed to rotate around the short rotating shaft;
s3: the flue gas entering from one end of the blast furnace flue close to the primary blocking plate is firstly blocked by the primary blocking plate to remove most impurity particles in the flue gas, then the flue gas is guided by the first air holes, the dispersed flue gas is gathered, and the turnover blades perform secondary blocking on the impurity particles in the flue gas;
s4: after secondary impurity removal, the smoke is intercepted through a secondary baffle plate, impurity particles in the smoke are intercepted for the third time, and then are guided through a second air hole, and few impurity particles in the smoke collide with each other, so that particles contained in the smoke are knocked down;
s5: and purifying the flue gas after removing impurities by other purification devices in the blast furnace flue, and discharging the intercepted impurity particles from the lower part of the blast furnace flue.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model provides a multi-stage guiding purification device for blast furnace flue gas and an implementation method, which are provided with a primary blocking plate, a secondary blocking plate, a turning blocking assembly and an induced draft assembly, wherein the induced draft assembly is used for realizing negative pressure control of the blast furnace flue, sucking the flue gas into the blast furnace flue, and then realizing triple purification through the primary blocking plate, the turning blocking assembly and the secondary blocking plate, so that the impurity removal efficiency is improved, and impurities in the flue gas are reduced;
2. the utility model provides a multi-stage guiding purification device for blast furnace flue gas and an implementation method, wherein a secondary separation plate is linked with an induced draft assembly under the action of a support frame, and meanwhile, the linkage of a primary separation plate and the secondary separation plate is realized by utilizing a turnover separation assembly;
3. the utility model provides a multi-stage guiding purification device for blast furnace flue gas and an implementation method, wherein a first air hole and a second air hole are respectively arranged on a first-stage separation plate and a second-stage separation plate, different guiding of the flue gas is realized by utilizing the first air hole and the second air hole, impurities in the flue gas can be further removed by utilizing the flowing direction of the flue gas, and the purification capacity is improved;
4. according to the multi-stage guiding purification device and the implementation method for the blast furnace flue gas, impurities are removed from the flue gas in the blast furnace flue through three-stage interception and two-stage guiding, so that impurity particles in the flue gas can be greatly reduced, and the first-stage blocking plate, the second-stage blocking plate and the overturning blocking assembly are compact in structure, small in occupied space and laying a foundation for subsequent treatment of the flue gas.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a view of the primary baffle installation configuration of the present invention;
FIG. 3 is a cross-sectional view of a primary baffle of the present invention;
FIG. 4 is a view of the secondary barrier panel installation configuration of the present invention;
FIG. 5 is a view of a secondary barrier plate of the present invention;
FIG. 6 is a cross-sectional view of a secondary barrier plate of the present invention;
figure 7 is a block diagram of a rollover barrier assembly of the present invention;
FIG. 8 is a schematic view of the stand of the present invention;
fig. 9 is a structural view of an induced draft assembly of the present invention.
In the figure: 1. a primary barrier plate; 11. a first rack; 12. a first air vent; 13. a short rotating shaft; 14. a sealing strip; 2. a secondary barrier plate; 21. a second rack; 22. a second air hole; 3. turning over the barrier assembly; 31. a central shaft; 32. an end gear; 33. turning over the blades; 4. an air inducing assembly; 41. a fan main body; 42. a drive motor; 43. an extension rod; 431. a worm gear; 5. a support frame; 51. a long rotating shaft; 511. a worm; 52. a bearing seat; 521. connecting a bracket; 53. rotating the rod; 54. a pull rod is connected.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a multi-stage guiding and purifying device for flue gas of a blast furnace comprises a first-stage barrier plate 1, a second-stage barrier plate 2, a turning barrier assembly 3 and an air inducing assembly 4, wherein the turning barrier assembly 3 is arranged between the first-stage barrier plate 1 and the second-stage barrier plate 2, a support frame 5 is arranged on one side, away from the first-stage barrier plate 1, of the second-stage barrier plate 2, and the support frame 5 is movably connected with the air inducing assembly 4.
Referring to fig. 2-6, a first rack 11 and a second rack 21 are respectively disposed at adjacent sides of a first-stage baffle plate 1 and a second-stage baffle plate 2, the first rack 11 and the second rack 21 are arranged in a staggered manner, a short rotating shaft 13 is fixedly connected to the middle positions of the upper side and the lower side of the first-stage baffle plate 1 and the second-stage baffle plate 2, the first-stage baffle plate 1 and the second-stage baffle plate 2 are respectively movably connected with a blast furnace flue through the short rotating shaft 13, the first-stage baffle plate 1 and the second-stage baffle plate 2 can rotate through the short rotating shaft 13, first air holes 12 are equidistantly formed in the first-stage baffle plate 1, the first air holes 12 at the upper side and the lower side of the first-stage baffle plate 1 are obliquely disposed, one end of the first air holes 12 at the upper side and the lower side of the first-stage baffle plate 1, which is close to the second-stage baffle plate 2, inclines towards the transverse center line direction of the first-stage baffle plate 1 to block impurities in the flue gas, the flue gas passes through first bleeder vent 12 and moves forward, first bleeder vent 12 gathers together the flue gas of dispersion, direction upset blade 33 carries out the secondary and blocks to the impurity granule in the flue gas, the equidistant second bleeder vent 22 of having seted up on second grade baffler 2, the one end of the second bleeder vent 22 of two adjacent rows on second grade baffler 2 inclines in opposite directions, the flue gas through second bleeder vent 22, under the direction of second bleeder vent 22, move in opposite directions, make few impurity granule in the flue gas strike each other, thereby hit the particulate matter that has in the flue gas, one-level baffler 1 and second grade baffler 2 a week all are provided with sealing strip 14, one-level baffler 1 and second grade baffler 2 are when rotatory, sealing strip 14 is connected with the inner wall contact of blast furnace flue all the time, play sealed effect.
Referring to fig. 7, the turning obstructing assembly 3 includes a central shaft 31, end gears 32 and turning vanes 33, two ends of the central shaft 31 are movably connected to an inner wall of the flue of the blast furnace through bearings, the end gears 32 are fixedly connected to positions of the central shaft 31 near the ends, the turning vanes 33 are fixedly connected to positions of the central shaft 31 between the end gears 32, upper and lower sides of the end gears 32 are respectively engaged with the first rack 11 and the second rack 21, the end gears 32 are driven by the second rack 21 to rotate, so as to realize position movement of the first rack 11, the turning vanes 33 are driven by the rotation of the end gears 32 to further obstruct impurities in the gas, the length of the end gears 32 is greater than the widths of the first rack 11 and the second rack 21, when the first blocking plate 1 and the second blocking plate 2 rotate and move, the first rack 11 and the second rack 21 will generate a certain angular deviation, the first rack 11 and the second rack 21 are always engaged with the end gear 32.
Referring to fig. 8, the supporting frame 5 includes a long rotating shaft 51, a bearing seat 52, a rotating rod 53 and a connecting pull rod 54, the two ends of the long rotating shaft 51 are fixedly connected with the rotating rod 53, one end of the rotating rod 53 far from the long rotating shaft 51 is hinged with the connecting pull rod 54, the connecting pull rod 54 is movably connected with the second-stage baffle plate 2, the bearing seat 52 is arranged at a position of the long rotating shaft 51 close to the two ends, a worm 511 is fixedly connected to a middle position of the long rotating shaft 51, the rotating rods 53 at the two ends of the long rotating shaft 51 are asymmetrically arranged, when the long rotating shaft 51 rotates, the positions of the rotating rods 53 are always inconsistent, so that the positions of the second-stage baffle plate 2 far from the long rotating shaft 51 are inconsistent, the second-stage baffle plate 2 rotates around the short rotating shaft 13 to change the moving direction of the flue gas, the connecting bracket 521 is arranged on the bearing seat 52, the connecting bracket 521 is connected with the blast furnace flue, and the position of the long rotating shaft 51 is fixed through the connecting bracket 521, so that the long rotation shaft 51 rotates within the bearing housing 52.
Referring to fig. 9, the air inducing assembly 4 includes a blower main body 41, a driving motor 42 and an extension rod 43, an output end of the driving motor 42 is fixedly connected to the blower main body 41, the extension rod 43 is fixedly connected to a central position of the blower main body 41, one end of the extension rod 43 is fixedly connected to a worm wheel 431, the worm wheel 431 is meshed with the worm 511, the driving motor 42 is connected to an inner wall of the blast furnace flue through a bracket, the driving motor 42 operates to drive the blower main body 41 to rotate, negative pressure is generated in the blast furnace flue to attract flue gas to enter, and meanwhile, the blower main body 41 drives the extension rod 43 to rotate, so that the worm wheel 431 drives the worm 511 to rotate, thereby controlling the long rotating shaft 51 to operate.
In order to better show the implementation process of the multi-stage guiding and purifying device for blast furnace flue gas, the embodiment now provides an implementation method of the multi-stage guiding and purifying device for blast furnace flue gas, which includes the following steps:
the method comprises the following steps: the purification device is arranged in a blast furnace flue, a first-stage separation plate 1 and a second-stage separation plate 2 are respectively movably connected with the blast furnace flue through a short rotating shaft 13, a driving motor 42 works to drive a fan main body 41 to rotate, negative pressure is generated in the blast furnace flue, and smoke is sucked from one end, close to the first-stage separation plate 1, of the blast furnace flue;
step two: the worm wheel 431 drives the worm 511 to rotate, so that the long rotating shaft 51 is controlled to work, under the action of the driving and connecting pull rod 54 of the rotating rod 53, the secondary barrier plate 2 rotates and moves around the short rotating shaft 13, meanwhile, the second rack 21 drives the end gear 32 to rotate, and the turning blade 33 is driven to rotate, so that the position movement of the first rack 11 is realized, the primary barrier plate 1 is pushed to rotate around the short rotating shaft 13, the first rack 11 and the second rack 21 move in the opposite direction, the primary barrier plate 1 and the secondary barrier plate 2 always rotate in the opposite direction, the barrier force of the primary barrier plate 1 and the secondary barrier plate 2 on smoke is increased, more impurity particles in the smoke are intercepted, and meanwhile, the first air vent 12 and the second air vent 22 are prevented from being blocked by impurities in the smoke;
step three: flue gas entering from one end of a blast furnace flue close to the primary blocking plate 1 is firstly blocked by the primary blocking plate 1, most impurity particles in the flue gas are removed, then the flue gas is guided by the first air holes 12, dispersed flue gas is gathered, and the turnover blades 33 are used for secondarily blocking the impurity particles in the flue gas;
step four: after secondary impurity removal, the smoke is intercepted by the secondary baffle plate 2, impurity particles in the smoke are intercepted for the third time, and then are guided by the second air holes 22, and few impurity particles in the smoke collide with each other, so that particles in the smoke are knocked down;
step five: and purifying the flue gas after removing impurities by other purification devices in the blast furnace flue, and discharging the intercepted impurity particles from the lower part of the blast furnace flue.
In summary, the following steps: the multi-stage guiding purification device for the blast furnace flue gas and the implementation method thereof are provided with a primary barrier plate 1, a secondary barrier plate 2, an overturning barrier assembly 3 and an induced draft assembly 4, the negative pressure control of the blast furnace flue is realized through the induced draft assembly 4, the flue gas is attracted to enter the blast furnace flue, and then triple purification is realized through the primary barrier plate 1, the overturning barrier assembly 3 and the secondary barrier plate 2, so that the impurity removal efficiency is improved, and the impurities in the flue gas are reduced; the secondary barrier plate 2 is linked with the induced draft assembly 4 under the action of the support frame 5, meanwhile, the primary barrier plate 1 and the secondary barrier plate 2 are linked by the turnover barrier assembly 3, the primary barrier plate 1 and the secondary barrier plate 2 are always in a movable state, the guiding direction of smoke is continuously changed, the barrier force of the primary barrier plate 1 and the secondary barrier plate 2 on the smoke is increased, more impurity particles in the smoke are intercepted, and meanwhile, the first air vent 12 and the second air vent 22 are prevented from being blocked by impurities in the smoke; the first air holes 12 and the second air holes 22 are respectively arranged on the first-stage separation plate 1 and the second-stage separation plate 2, different guiding of the smoke is realized by utilizing the first air holes 12 and the second air holes 22, impurities in the smoke can be further removed by utilizing the flowing direction of the smoke, and the purification capacity is improved; impurity is got rid of through tertiary interception impurity and two-stage direction to the flue gas in blast furnace flue, the impurity granule in the flue gas that can significantly reduce, and one-level baffler 1, second grade baffler 2 and upset separation subassembly 3 compact structure, occupation space is few, lays the basis for the subsequent processing of flue gas.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
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| CN202210298452.7A CN114534421B (en) | 2022-03-24 | 2022-03-24 | Multistage guiding purification device for blast furnace flue gas and implementation method |
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| CN202210298452.7A CN114534421B (en) | 2022-03-24 | 2022-03-24 | Multistage guiding purification device for blast furnace flue gas and implementation method |
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