CN112755705B - Desulfurization and denitrification treatment method for flue gas of steel smelting boiler - Google Patents
Desulfurization and denitrification treatment method for flue gas of steel smelting boiler Download PDFInfo
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- CN112755705B CN112755705B CN202011495001.XA CN202011495001A CN112755705B CN 112755705 B CN112755705 B CN 112755705B CN 202011495001 A CN202011495001 A CN 202011495001A CN 112755705 B CN112755705 B CN 112755705B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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Abstract
The invention relates to a desulfurization and denitrification treatment method for flue gas of a steel smelting boiler, which comprises a bottom plate, a treatment tower, an air inlet pipeline, a spraying device, a filter plate, a filtering device, a cleaning device and a desulfurization and denitrification plate, wherein the treatment tower is arranged at the left end of the bottom plate, the air inlet pipeline is arranged on the left side wall of the treatment tower, the spraying device is arranged on the right side wall of the treatment tower, the filtering device is arranged above the spraying device, the cleaning device is arranged on the right side of the filtering device, the filter plate is clamped at the lower end inside the treatment tower, and the desulfurization and denitrification plate is arranged at the upper end inside the treatment tower. The invention can solve the problems that when the existing equipment is used for treating the boiler flue gas, large-particle smoke dust impurities in the flue gas easily block filter meshes, so that the filtering effect is poor, and the treatment effect of the flue gas is also poor; b. the filter meshes are cleaned manually, the cleaning difficulty is high, the cleaning effect is poor, and therefore the treatment efficiency of the device on boiler flue gas is reduced.
Description
Technical Field
The invention relates to the field of treatment of flue gas of steel smelting boilers, in particular to a desulfurization and denitrification treatment method for flue gas of a steel smelting boiler.
Background
The boiler is the most widely used energy conversion equipment in steel smelting, the energy input to the boiler comprises chemical energy and electric energy in fuel, the boiler outputs smoke with certain heat energy, and the excessive emission of the smoke of the boiler can cause haze, acid rain, photochemical smog and the like, thereby seriously harming the ecological environment and the human health. Among them, sulfur and nitrate gases in boiler flue gas are the most important pollution sources of atmospheric pollution, so that the flue gas generated by a boiler in the steel smelting process needs to be filtered and purified for emission.
At present, when the existing boiler flue gas is filtered and purified, the following problems can be encountered: a. when the existing equipment is used for treating the boiler flue gas, large-particle smoke dust impurities in the flue gas easily block filter meshes, so that the filtering effect is poor, and the treatment effect of the flue gas is poor; b. the filter mesh holes are cleaned manually, the cleaning difficulty is high, the cleaning effect is poor, the treatment efficiency of the equipment on boiler flue gas is reduced, and the benefit of an enterprise is affected.
Disclosure of Invention
Technical problem to be solved
The invention can solve the problems that when the existing equipment is used for treating the boiler flue gas, large-particle smoke dust impurities in the flue gas easily block filter meshes, so that the filtering effect is poor, and the treatment effect of the flue gas is also poor; b. clear up the filtration mesh through the manual work, the clearance degree of difficulty is great, and the clearance effect is relatively poor to reduced the treatment effeciency of equipment to the boiler flue gas, thereby influenced the problem of the benefit of enterprise.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme: the desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler uses a desulfurization and denitrification treatment device for the flue gas of the steel smelting boiler, the desulfurization and denitrification treatment device for the flue gas of the steel smelting boiler comprises a bottom plate, a treatment tower, an air inlet pipeline, a spraying device, a filter plate, a filtering device, a cleaning device and a desulfurization and denitrification plate, and the desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler comprises the following specific steps:
s1, equipment checking: before the steel smelting boiler flue gas desulfurization and denitration treatment equipment is started, equipment inspectors are used for carrying out safety inspection on the equipment to ensure that the steel smelting boiler flue gas desulfurization and denitration treatment equipment can be normally used;
s2, spray cooling: introducing boiler flue gas generated after steel smelting into a treatment tower through an air inlet pipeline, and spraying, cooling and cooling the boiler flue gas through a spraying device;
s3, filtering and dedusting: filtering and removing dust particles in the boiler flue gas cooled in the step S2 through a filtering device, and timely cleaning the filtering device through a cleaning device;
S4, purification treatment: purifying the boiler flue gas subjected to dust removal through a desulfurization and denitrification plate, and further removing harmful impurities such as sulfur and nitrate in the boiler flue gas;
the device comprises a bottom plate, a treatment tower, a spraying device, a filtering device, a cleaning device, a filter plate, a desulfurization and denitrification plate, wherein the upper end of the left side of the bottom plate is provided with the treatment tower, the lower end of the left side wall of the treatment tower is provided with an air inlet pipeline, the right side wall of the treatment tower is provided with the spraying device, the filtering device is arranged above the spraying device, the right side of the filtering device is provided with the cleaning device, the lower end of the cleaning device is fixedly connected to the upper end of the right side of the bottom plate, the position, close to the lower end, inside the treatment tower is clamped with the filter plate, and the position, close to the upper end, inside the treatment tower is provided with the desulfurization and denitrification plate;
the spraying device comprises a rubber hose, a water pump, an installation plate and a spray head, wherein the installation plate is fixedly connected to the position, close to the lower end, on the right side wall of the treatment tower;
the filtering device comprises a rotating shaft, a filtering net, a grooved pulley, a shifting rod, a rotary table and a filtering motor, wherein a rectangular groove is formed in the middle of the right side wall of the processing tower, the rotating shaft is installed in the middle of the front side wall and the rear side wall of the rectangular groove through bearings, the filtering net is evenly installed on the rotating shaft in the circumferential direction, the rear end of the rotating shaft is connected with the grooved pulley through a key, the rotary table is arranged on the rear side of the grooved pulley and installed on an output shaft of the filtering motor through a key, the filtering motor is installed inside the side wall of the processing tower behind the rectangular groove through a motor base, the shifting rod is installed at the upper end of the front side wall of the rotary table, and the shifting rod and the grooved pulley are in sliding fit;
Cleaning device include the supporting seat, Contraband type frame, actuating mechanism, No. two Contraband type frames, the bracing piece, clearance mechanism and collect the frame, wherein the right side upper end fixedly connected with supporting seat of bottom plate, Contraband type frame of upper end fixedly connected with of supporting seat, the right side wall middle part of Contraband type frame is connected with actuating mechanism, actuating mechanism's left end fixedly connected with No. two Contraband type frames, No. two Contraband type frames set up the inside at Contraband type frame, symmetrical fixedly connected with bracing piece on the wall of both sides about the inside of Contraband type frame, the inner of bracing piece and the wall of both sides about the inside of No. two Contraband type frames are sliding connection, be provided with clearance mechanism on the inside wall of No. two Contraband type frames, be provided with on the inside wall of both sides about the inside of No. two Contraband type frames and collect the frame.
As a preferred technical scheme of the invention, the upper end face and the lower end face of the filter plate are uniformly provided with small holes, the filter element is arranged in the filter plate, and the left side wall of the filter plate is provided with a handle.
As a preferable technical scheme of the invention, the openings of the first model Contraband frame and the second model Contraband frame face to the left.
As a preferred technical scheme of the invention, the driving mechanism comprises a transverse plate, a driving motor, an incomplete cam, a T-shaped rod and a spiral spring, wherein the transverse plate is fixedly connected to the lower end of the right side wall of the first Contraband-shaped frame, the driving motor is mounted on the upper end face of the transverse plate through a motor base, the incomplete cam is connected to an output shaft of the driving motor through a key, the T-shaped rod is attached to the left side of the incomplete cam, a circular through hole is formed in the middle of the right side wall of the first Contraband-shaped frame, the left end of the T-shaped rod penetrates through the circular through hole and is fixedly connected to the middle of the right side wall of the second Contraband-shaped frame, and the spiral spring is sleeved on the T-shaped rod on the right side of the circular through hole.
As a preferable technical scheme of the invention, the middle part of the right side wall of the T-shaped rod is provided with a semicircular bulge.
As a preferred technical scheme of the invention, the cleaning mechanism comprises an electric push rod, a sliding plate, a cleaning motor, a disc, a rocker, a roller, an L-shaped rod, a sliding block and a brush, wherein the electric push rod is arranged at the upper end inside the second Contraband type frame through a push rod base, the lower end of the electric push rod is fixedly connected with the sliding plate, the right end of the sliding plate is in sliding connection with the right side wall inside the second Contraband type frame, the cleaning motor is arranged on the lower end surface of the sliding plate through a motor base, the disc is connected to an output shaft of the cleaning motor through a key, the rocker is connected to the position, close to the outer edge, of the disc through a pin shaft, the roller is arranged at the lower end of the rocker, the L-shaped rod is arranged above the rocker, a roller groove is formed inside the right end of the L-shaped rod, the roller is arranged in the roller groove in a sliding manner, the left end of the L-shaped rod is fixedly connected to the right side wall of the sliding block, the upper end of the sliding block is arranged on the lower end surface of the sliding plate, the lower end of the sliding block is provided with a hairbrush.
In a preferred embodiment of the present invention, a ball is disposed between the right end of the sliding plate and the inner right side wall of the second Contraband-shaped frame.
As a preferable technical scheme of the invention, the desulfurization and denitrification plate is uniformly provided with air holes, and a desulfurization and denitrification catalyst is arranged in the desulfurization and denitrification plate.
(III) advantageous effects
1. According to the desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler, the flue gas of the boiler is cooled by a spraying liquid spraying mode, meanwhile, with the downward flow of the spraying liquid, part of large-particle dust in the flue gas of the boiler can be removed, the spraying liquid containing the large-particle dust is filtered by the filter plate, so that the large-particle dust in the spraying liquid is filtered, the filter element in the filter plate can be cleaned by manually pumping out the filter plate, the desulfurization and denitrification treatment method is convenient and efficient, the filtered spraying liquid returns to the bottom of the treatment tower again and can be reused, and the flue gas treatment cost is reduced;
2. according to the desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler, the flue gas can be secondarily filtered by the filter screen through the filter screen, dust particles in the flue gas are further filtered, the filtering effect is good, the filter screen can rotate at any time, the filter screen cannot be blocked by impurities to reduce the filtering efficiency, and the filter screen cannot influence the operation of the device in the rotating and cleaning processes, so that the flue gas treatment efficiency is improved;
3. According to the method for desulfurization and denitrification treatment of the flue gas of the steel smelting boiler, the filter screen is cleaned by a mechanical cleaning mode instead of a manual cleaning mode, the cleaning difficulty is low, the cleaning effect is good, the filter screen can always perform a filtering effect in the cleaning process, and the filtering efficiency is greatly improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of the portion A of FIG. 2 according to the present invention;
FIG. 4 is a right side view of the filter assembly of the present invention;
FIG. 5 is a schematic structural diagram of a rotating shaft, a grooved pulley, a deflector rod, a turntable and a filter motor in the invention;
FIG. 6 is a schematic view of the Contraband model I frame and the driving mechanism of the present invention;
FIG. 7 is a schematic diagram of the structure of model No. two Contraband frame, cleaning mechanism and collection frame of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 taken along line B of the present invention;
fig. 9 is a schematic perspective view of the filter device of the present invention.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.
In addition, the following terms are defined based on the functions of the present invention, and may be different depending on the intention of a user or an operator or a common practice. Therefore, these terms are defined based on the entire contents of the present specification.
As shown in fig. 1 to 9, a desulfurization and denitrification treatment method for flue gas of a steel smelting boiler uses a desulfurization and denitrification treatment device for flue gas of a steel smelting boiler, the desulfurization and denitrification treatment device for flue gas of a steel smelting boiler comprises a bottom plate 1, a treatment tower 2, an air inlet pipeline 3, a spraying device 4, a filter plate 5, a filter device 6, a cleaning device 7 and a desulfurization and denitrification plate 8, and the specific method for treating flue gas of a steel smelting boiler by using the desulfurization and denitrification treatment device for flue gas of a steel smelting boiler is as follows:
s1, equipment checking: before starting the equipment for desulfurization and denitrification treatment of the flue gas of the iron and steel smelting boiler, equipment inspectors are used for carrying out safety inspection on the equipment to ensure that the equipment for desulfurization and denitrification treatment of the flue gas of the iron and steel smelting boiler can be normally used;
s2, spray cooling: introducing boiler flue gas generated after steel smelting into a treatment tower 2 through an air inlet pipeline 3, and performing spray cooling on the boiler flue gas through a spray device 4;
S3, filtering and dedusting: filtering and removing the dust particles in the boiler flue gas subjected to cooling in the step S2 through a filtering device 6, and timely cleaning the filtering device 6 through a cleaning device 7;
s4, purification treatment: the boiler flue gas after dust removal is purified by a desulfurization and denitrification plate 8, and harmful impurities such as sulfur and nitrate in the boiler flue gas are further removed;
the device comprises a bottom plate 1, a treatment tower 2, an air inlet pipeline 3, a spraying device 4, a filtering device 6, a cleaning device 7, a filtering plate 5 and a desulfurization and denitrification plate 8, wherein the treatment tower 2 is installed at the upper end of the left side of the bottom plate 1, the air inlet pipeline 3 is arranged at the lower end of the left side wall of the treatment tower 2, the spraying device 4 is arranged on the right side wall of the treatment tower 2, the filtering device 6 is installed above the spraying device 4, the cleaning device 7 is arranged on the right side of the filtering device 6, the lower end of the cleaning device 7 is fixedly connected to the upper end of the right side of the bottom plate 1, the filtering plate 5 is clamped in the treatment tower 2 close to the lower end, and the desulfurization and denitrification plate 8 is installed in the treatment tower 2 close to the upper end;
the spraying device 4 comprises a rubber hose 41, a water pump 42, a mounting plate 43 and a spray head 44, wherein the mounting plate 43 is fixedly connected to the right side wall of the treatment tower 2 near the lower end, the water pump 42 is mounted on the mounting plate 43 through a motor base, a water inlet of the water pump 42 is communicated with the bottom of the treatment tower 2 through the rubber hose 41, a mounting hole is formed in the right side wall of the treatment tower 2, a water outlet of the water pump 42 is communicated with the right end of the mounting hole, and the spray head 44 is arranged at the left end of the mounting hole. During operation, the spray liquid at the bottom of the treatment tower 2 is conveyed to the spray head 44 through the water pump 42, the boiler flue gas introduced into the treatment tower 2 is cooled through the spray head 44, meanwhile, the large particle dust in the boiler flue gas is removed along with the downward flow of the spray liquid, the spray liquid containing the large particle dust is filtered through the filter plate 5, and therefore the large particle dust in the spray liquid is filtered.
The upper end face and the lower end face of the filter plate 5 are evenly provided with small holes, a filter element is arranged inside the filter plate 5, and a handle is arranged on the left side wall of the filter plate 5. During specific work, the spraying liquid containing large-particle dust is filtered through the filter element, so that the large-particle dust is filtered and the spraying liquid is conveyed to the bottom of the treatment tower 2, the large-particle dust is recycled, the filter plate 5 is taken out through the manual pulling handle, and the filter element inside the filter plate 5 is cleaned.
The filtering device 6 comprises a rotating shaft 61, a filter screen 62, a grooved pulley 63, a shifting lever 64, a turntable 65 and a filter motor 66, wherein the middle part of the right side wall of the treatment tower 2 is provided with a rectangular groove, the middle parts of the front side wall and the rear side wall of the rectangular groove are provided with the rotating shaft 61 through bearings, the filter screen 62 is uniformly arranged on the rotating shaft 61 in the circumferential direction, the rear end of the rotating shaft 61 is connected with the grooved pulley 63 through a key, the rear side of the grooved pulley 63 is provided with the turntable 65, the turntable 65 is arranged on an output shaft of the filter motor 66 through a key, the filter motor 66 is arranged inside the side wall of the treatment tower 2 behind the rectangular groove through a motor base, the shifting lever 64 is arranged at the upper end of the front side wall of the turntable 65, and the shifting lever 64 is in sliding fit with the grooved pulley 63. During specific work, drive carousel 65 through filter motor 66 and rotate to drive driving lever 64 and rotate, drive sheave 63 through driving lever 64 and rotate, thereby drive pivot 61 and rotate, thereby drive filter screen 62 and rotate, carry out filtration treatment through filter screen 62 to the boiler flue gas that rises in the treating tower 2, thereby detach the dust particle in the boiler flue gas.
The cleaning device 7 comprises a supporting seat 71, a first model Contraband model frame 72, a driving mechanism 73, a second model Contraband model frame 74, a supporting rod 75, a cleaning mechanism 76 and a collecting frame 77, wherein the upper end of the right side of the bottom plate 1 is fixedly connected with a supporting seat 71, the upper end of the supporting seat 71 is fixedly connected with a first Contraband-shaped frame 72, the middle part of the right side wall of the first Contraband-shaped frame 72 is connected with a driving mechanism 73, the left end of the driving mechanism 73 is fixedly connected with a second Contraband-shaped frame 74, the second Contraband-shaped frame 74 is arranged inside the first Contraband-shaped frame 72, openings of the first model Contraband frame 72 and the second model Contraband frame 74 face to the left, supporting rods 75 are symmetrically and fixedly connected to the upper side wall and the lower side wall of the interior of the first model Contraband frame 72, the inner ends of the supporting rods 75 are in sliding connection with the upper side wall and the lower side wall of the interior of the second model Contraband frame 74, a cleaning mechanism 76 is arranged on the upper side wall of the interior of the second model Contraband frame 74, and a collecting frame 77 is arranged on the lower side wall of the interior of the second model Contraband frame 74. During specific work, the driving mechanism 73 drives the second Contraband-shaped frame 74 to move leftwards, so that the cleaning mechanism 76 is driven to move leftwards, the collecting frame 77 is driven to move leftwards, the cleaning mechanism 76 is located above the filtering device 6, the filtering device 6 is cleaned through the cleaning mechanism 76, and the cleaned dust is collected and processed through the collecting frame 77.
The driving mechanism 73 comprises a transverse plate 731, a driving motor 732, an incomplete cam 733, a T-shaped rod 734 and a coil spring 735, wherein the lower end of the right side wall of the first Contraband type frame 72 is fixedly connected with a transverse plate 731, the upper end surface of the transverse plate 731 is provided with a driving motor 732 through a motor base, the output shaft of the driving motor 732 is connected with an incomplete cam 733 through a key, the left side of the incomplete cam 733 is adhered with a T-shaped rod 734, the middle part of the right side wall of the T-shaped rod 734 is provided with a semicircular bulge, the semicircular bulge can reduce the friction between the T-shaped rod 734 and the incomplete cam 733, therefore, the incomplete cam 733 is facilitated to drive the T-shaped rod 734 to move, a circular through hole is formed in the middle of the right side wall of the first Contraband-shaped frame 72, the left end of the T-shaped rod 734 penetrates through the circular through hole and is fixedly connected to the middle of the right side wall of the second Contraband-shaped frame 74, and the T-shaped rod 734 on the right side of the circular through hole is sleeved with the spiral spring 735. During specific work, the incomplete cam 733 is driven to rotate by the driving motor 732, and the T-shaped rod 734 is driven to move leftwards by the extrusion of the incomplete cam 733 on the T-shaped rod 734, so that the second Contraband type frame 74 is driven to move leftwards.
The cleaning mechanism 76 comprises an electric push rod 761, a sliding plate 762, a cleaning motor 763, a disc 764, a rocker 765, a roller 766, an L-shaped rod 767, a slider 768 and a brush 769, wherein the electric push rod 761 is installed at the upper end of the inner part of the second model Contraband frame 74 through a push rod base, the sliding plate 762 is fixedly connected to the lower end of the electric push rod 761, the right end of the sliding plate 762 is in sliding connection with the right side wall of the inner part of the second model Contraband frame 74, a ball is arranged between the right end of the sliding plate 762 and the right side wall of the inner part of the second model Contraband frame 74, the ball can reduce friction between the sliding plate 762 and the right side wall of the inner part of the second model Contraband frame 74, so that the electric push rod 761 drives the sliding plate 762 to slide up and down, the cleaning motor 763 is installed on the lower end face of the sliding plate 762 through a motor base, the disc 764 is connected to an output shaft of the cleaning motor 763 through a key, the disc 765 is connected to a rocker near the outer edge through a pin shaft, a roller 766 is installed at the lower end of the rocker 765, an L-shaped rod 767 is arranged above the rocker 765, a roller groove is formed in the right end of the L-shaped rod 767, the roller 766 is installed in the roller groove in a sliding mode, the left end of the L-shaped rod 767 is fixedly connected to the right side wall of the sliding block 768, the upper end of the sliding block 768 is installed on the lower end face of the sliding plate 762 in a sliding mode, and a brush 769 is arranged at the lower end of the sliding block 768. During specific work, drive disc 764 through cleaning motor 763 and rotate, thereby drive rocker 765 and rotate, drive gyro wheel 766 through rocker 765 and rotate in the gyro wheel groove that L type pole 767 right-hand member was seted up, thereby drive L type pole 767 and carry out reciprocating motion about driving slider 768, thereby drive slider 768 and carry out reciprocating motion about driving brush 769 through slider 768, drive sliding plate 762 downstream through electric putter 761, thereby drive brush 769 downstream, make the lower terminal surface of brush 769 paste closely at the up end of filter screen 62, reciprocating motion about through brush 769 clears up filter screen 62.
The desulfurization and denitrification plate 8 is uniformly provided with air holes, and a desulfurization and denitrification catalyst is arranged in the desulfurization and denitrification plate 8. During specific work, boiler flue gas passes through the gas pocket, and the harmful impurity of sulphur class and nitre class can be got rid of to the inside SOx/NOx control catalyst of SOx/NOx control board 8 in the boiler flue gas to improve SOx/NOx control board 8's purification efficiency.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (7)
1. The utility model provides a steel smelting boiler flue gas SOx/NOx control processing method, it has used a steel smelting boiler flue gas SOx/NOx control treatment facility, and this equipment includes bottom plate (1), treatment tower (2), admission line (3), spray set (4), filter (5), filter (6), cleaning device (7) and SOx/NOx control board (8), its characterized in that: the specific method for treating the flue gas of the iron and steel smelting boiler by adopting the desulfurization and denitrification treatment equipment for the flue gas of the iron and steel smelting boiler comprises the following steps:
S1, equipment checking: before the steel smelting boiler flue gas desulfurization and denitration treatment equipment is started, equipment inspectors are used for carrying out safety inspection on the equipment to ensure that the steel smelting boiler flue gas desulfurization and denitration treatment equipment can be normally used;
s2, spray cooling: boiler flue gas generated after steel smelting is introduced into the treatment tower (2) through the gas inlet pipeline (3), and is subjected to spraying, cooling and cooling through the spraying device (4);
s3, filtering and dedusting: filtering and removing dust particles in the boiler flue gas cooled in the S2 through a filtering device (6), and timely cleaning the filtering device (6) through a cleaning device (7);
s4, purification treatment: the boiler flue gas after dust removal is purified through a desulfurization and denitrification plate (8), and harmful impurities such as sulfur and nitrate in the boiler flue gas are further removed;
the device comprises a base plate (1), a treatment tower (2) is installed at the upper end of the left side of the base plate (1), an air inlet pipeline (3) is arranged at the lower end of the left side wall of the treatment tower (2), a spraying device (4) is arranged on the right side wall of the treatment tower (2), a filtering device (6) is installed above the spraying device (4), a cleaning device (7) is arranged on the right side of the filtering device (6), the lower end of the cleaning device (7) is fixedly connected to the upper end of the right side of the base plate (1), a filtering plate (5) is clamped in the treatment tower (2) at a position close to the lower end, and a desulfurization and denitrification plate (8) is installed in the treatment tower (2) at a position close to the upper end;
The spraying device (4) comprises a rubber hose (41), a water pump (42), a mounting plate (43) and a spray head (44), wherein the mounting plate (43) is fixedly connected to the position, close to the lower end, on the right side wall of the treatment tower (2), the water pump (42) is mounted on the mounting plate (43) through a motor base, a water inlet of the water pump (42) is communicated with the bottom of the treatment tower (2) through the rubber hose (41), a mounting hole is formed in the right side wall of the treatment tower (2), a water outlet of the water pump (42) is communicated with the right end of the mounting hole, and the spray head (44) is arranged at the left end of the mounting hole;
the filtering device (6) comprises a rotating shaft (61), a filtering net (62), a grooved pulley (63), a shifting rod (64), a turntable (65) and a filtering motor (66), wherein a rectangular groove is formed in the middle of the right side wall of the processing tower (2), the rotating shaft (61) is installed in the middle of the front side wall and the rear side wall of the rectangular groove through bearings, the filtering net (62) is evenly installed on the rotating shaft (61) in the circumferential direction, the rear end of the rotating shaft (61) is connected with the grooved pulley (63) through a key, the turntable (65) is arranged on the rear side of the grooved pulley (63), the turntable (65) is installed on an output shaft of the filtering motor (66) through a key, the filtering motor (66) is installed inside the side wall of the processing tower (2) behind the rectangular groove through a motor base, the shifting rod (64) is installed at the upper end of the front side wall of the turntable (65), and the shifting rod (64) and the grooved pulley (63) are in sliding fit;
The cleaning device (7) comprises a supporting seat (71), a first Contraband type frame (72), a driving mechanism (73), a second Contraband type frame (74), a supporting rod (75), a cleaning mechanism (76) and a collecting frame (77), wherein the upper end of the right side of the bottom plate (1) is fixedly connected with the supporting seat (71), the upper end of the supporting seat (71) is fixedly connected with the first Contraband type frame (72), the middle part of the right side wall of the first Contraband type frame (72) is connected with the driving mechanism (73), the left end of the driving mechanism (73) is fixedly connected with the second Contraband type frame (74), the second Contraband type frame (74) is arranged in the first Contraband type frame (72), the supporting rods (75) are symmetrically and fixedly connected to the upper and lower side walls in the first Contraband type frame (72), the inner end of the supporting rod (75) is in sliding connection with the upper and lower side walls of the second Contraband type frame (74), the cleaning mechanism (76) is arranged on the upper side wall in the second Contraband type frame (74), a collection frame (77) is arranged on the inner lower side wall of the second model Contraband frame (74);
the cleaning mechanism (76) comprises an electric push rod (761), a sliding plate (762), a cleaning motor (763), a disc (764), a rocker (765), a roller (766), an L-shaped rod (767), a sliding block (768) and a brush (769), wherein the electric push rod (761) is installed at the upper end inside the second Contraband-shaped frame (74) through a push rod base, the sliding plate (762) is fixedly connected to the lower end of the electric push rod (761), the right end of the sliding plate (762) is in sliding connection with the right side wall inside the second Contraband-shaped frame (74), the cleaning motor (763) is installed on the lower end face of the sliding plate (762) through a motor base, the disc (764) is connected to an output shaft of the cleaning motor (763) through a key, the rocker (765) is connected to the position, close to the outer edge, of the disc (764) through a pin shaft, the roller (766) is installed at the lower end of the rocker (765), the L-shaped rod (767) is arranged above the rocker (765), a roller groove is formed in the inner portion of the right end of the L-shaped rod (767), a roller (766) is installed in the roller groove in a sliding mode, the left end of the L-shaped rod (767) is fixedly connected to the right side wall of a sliding block (768), the upper end of the sliding block (768) is installed on the lower end face of the sliding block (762) in a sliding mode, and a brush (769) is arranged at the lower end of the sliding block (768).
2. The desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler according to claim 1, which is characterized by comprising the following steps: the filter is characterized in that small holes are uniformly formed in the upper end face and the lower end face of the filter plate (5), a filter element is placed inside the filter plate (5), and a handle is installed on the left side wall of the filter plate (5).
3. The desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler according to claim 1, which is characterized by comprising the following steps: the openings of the first model Contraband frame (72) and the second model Contraband frame (74) face to the left.
4. The desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler according to claim 1, which is characterized by comprising the following steps: the driving mechanism (73) comprises a transverse plate (731), a driving motor (732), an incomplete cam (733), a T-shaped rod (734) and a spiral spring (735), wherein the lower end of the right side wall of the first Contraband type frame (72) is fixedly connected with the transverse plate (731), the driving motor (732) is installed on the upper end face of the transverse plate (731) through a motor base, the incomplete cam (733) is connected to an output shaft of the driving motor (732) through a key, the T-shaped rod (734) is attached to the left side of the incomplete cam (733), a circular through hole is formed in the middle of the right side wall of the first Contraband type frame (72), the left end of the T-shaped rod (734) penetrates through the circular through hole and is fixedly connected to the middle of the right side wall of the second Contraband type frame (74), and the spiral spring (735) is sleeved on the T-shaped rod (734) on the right side of the circular through hole.
5. The desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler according to claim 4, characterized by comprising the following steps: the middle part of the right side wall of the T-shaped rod (734) is provided with a semicircular bulge.
6. The desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler according to claim 1, which is characterized by comprising the following steps: and a ball bearing is arranged between the right end of the sliding plate (762) and the inner right side wall of the model II Contraband frame (74).
7. The desulfurization and denitrification treatment method for the flue gas of the steel smelting boiler according to claim 1, which is characterized by comprising the following steps: the desulfurization and denitrification plate (8) is uniformly provided with air holes, and a desulfurization and denitrification catalyst is arranged in the desulfurization and denitrification plate (8).
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