CN112604490A - High-temperature flue gas wet desulfurization and denitrification dust remover - Google Patents

Abstract

The invention relates to a high-temperature flue gas wet desulfurization and denitrification dust remover which comprises a spray tower body, a spray pipeline assembly, a cam driving mechanism, a turbulent flow shaft assembly and a demisting grating plate, wherein the spray tower body is provided with a spray tower inlet and a spray tower outlet; the spraying pipeline assembly is horizontally arranged in the spraying tower body and comprises a main pipeline and branch pipelines, the turbulent flow shaft assemblies are correspondingly arranged on each branch pipeline, and each turbulent flow shaft assembly comprises a shaft rod, a guide disc, a spring and a plurality of turbulent flow assemblies; the dust remover provided by the invention can enhance the instantaneous impact force of spraying and improve the combination efficiency of the reducing agent liquid and the limestone slurry, thereby improving the effects and efficiency of desulfurization, denitrification and dust removal; can avoid the limestone powder taking limestone slurry as a reducing agent from condensing in the pipeline to form accumulation through hanging and washing, thereby ensuring the smoothness of the pipeline and the spray header.

Description

High-temperature flue gas wet desulfurization and denitrification dust remover

Technical Field

The invention relates to the technical field of flue gas and waste gas purification treatment, and particularly provides a high-temperature flue gas wet desulfurization and denitrification dust remover.

Background

In the field of flue gas and waste gas purification treatment, wet dust removal is carried out on high-temperature flue gas by a spray tower, so that not only can large-particle dust in the flue gas be removed, but also harmful substances such as sulfide, nitride and the like in the flue gas can be reduced and purified by spraying a reducing agent, so that the aim of harmless emission is achieved, the limestone is usually selected and prepared by the spray tower through the wet dust removal, limestone slurry is used as the reducing agent for spraying, limestone powder is ground and processed into limestone powder, and is stirred and mixed with water to form limestone slurry, and the limestone powder is basically insoluble in water, so that the limestone slurry is mixed liquid in which limestone powder particles are uniformly dispersed in water; the traditional spray tower for spraying and dedusting has the following problems;

1) the spraying strength of reducing agent liquid sprayed by a spraying pipeline in the traditional spraying tower is basically unchanged, so that spraying coverage can be formed only in a specific area all the time, and meanwhile, the spraying impact effect on flue gas is not strong, so that the combination efficiency of the reducing agent and harmful components of the flue gas is not high;

2) the limestone slurry is used as a reducing agent for spraying and dedusting, and limestone powder in the limestone slurry is easy to condense and form accumulation in a spraying pipeline system because limestone is basically insoluble in water, so that the passing diameter of an inner cavity of a spraying pipeline is reduced, and a spraying head is easy to block.

Based on the problems, the invention provides a high-temperature flue gas wet desulphurization and denitration dust remover.

Disclosure of Invention

In order to solve the problems, the invention provides a high-temperature flue gas wet desulphurization denitration dust remover, which is used for solving the problems mentioned in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a high-temperature flue gas wet desulfurization and denitrification dust remover comprises a spray tower body, a spray pipeline assembly, a cam driving mechanism, a turbulence shaft assembly and a demisting grating plate; wherein:

the spraying pipeline assembly is horizontally arranged in the spraying tower body and comprises a main pipeline and branch pipelines, the main pipeline is of a pipe barrel structure with openings at two ends, fixing rings are arranged at two ends of the main pipeline, the main pipeline horizontally stretches across between two side walls of the spraying tower body and is fixedly connected with the outer side wall of the spraying tower body through the two fixing rings, the main pipeline is communicated with two rows of branch pipelines which are equal in number and are uniformly distributed along the axial direction, the two rows of branch pipelines are positioned at the same horizontal height and are arranged in a mirror symmetry manner, the outer side ends of the branch pipelines are provided with openings, and the branch pipelines are provided with a plurality of spraying heads in a uniform arrangement along the axial direction;

the cam driving mechanism comprises two bearing disks and a cam shaft, the two bearing disks are fixedly arranged on the two fixing rings in a one-to-one correspondence mode, and the cam shaft penetrates through the central shaft of the main pipeline and is horizontally and rotatably arranged between the two bearing disks; a plurality of rhombic cams with the same number as that of a row of branch pipes are uniformly distributed on the camshaft along the axial direction, and the rhombic cams are correspondingly distributed between a plurality of groups of two branch pipes which are oppositely arranged one by one;

each branch pipe is correspondingly provided with the turbulence shaft assembly, the turbulence shaft assembly comprises a shaft rod, a guide disc, a spring and a plurality of turbulence assemblies, the shaft rod extends to the inside along the central shaft of the branch pipe, the guide disc is fixedly arranged at the outer port position of the branch pipe, the shaft rod is arranged in a sliding fit manner with the guide disc, the inner shaft end of the shaft rod is movably embedded with balls, the balls are contacted with the rhombic cams at adjacent positions, the spring is sleeved on the shaft rod, two ends of the spring are fixedly connected between the guide disc and the outer shaft end of the shaft rod, and the turbulence assemblies are all positioned inside the branch pipe and are uniformly distributed along the axial direction of the shaft rod;

the defogging grid plate is arranged in the spray tower body and is positioned above the spray pipeline assembly.

Preferably, the turbulent flow component comprises a fixed sleeve, a cleaning ring, pin shafts and turbulent flow blades, the fixed sleeve is fixedly mounted on the shaft lever, the cleaning ring is positioned on the periphery of the fixed sleeve and coaxially arranged, the cleaning ring is connected with the fixed sleeve through a plurality of pin shafts, the pin shafts are equidistantly distributed around the axial circumference of the shaft lever, and each pin shaft is rotatably provided with the turbulent flow blades; the outer wall of the cleaning ring is provided with a plurality of rings of annular scraping teeth, and the annular scraping teeth are in contact with the inner wall of the branch pipe.

Preferably, the spray tower body comprises a square tower bin and an exhaust bin fixed at the top end of the square tower bin, and the spray pipeline assembly and the defogging grid plates are horizontally arranged in the square tower bin.

Preferably, the cam driving mechanism further comprises a motor fixing seat and a driving motor, the motor fixing seat is fixedly installed on the outer side wall of the square tower bin, the driving motor is fixedly installed on the motor fixing seat, a driving gear is arranged on an output shaft of the driving motor, and a driven gear meshed with the driving gear is arranged at the shaft end of the cam shaft.

Preferably, a plurality of square grid holes are formed in the defogging grid plate, and fog hanging fluff is arranged on two opposite side walls of each grid hole.

Preferably, an air inlet is arranged on the side wall of one side of the square tower bin and is positioned below the spraying pipeline assembly.

Preferably, a plurality of liquid inlet pipe openings are uniformly arranged on the main pipeline along the axial direction.

The technical scheme has the following advantages or beneficial effects:

1. the invention provides a high-temperature flue gas wet desulfurization and denitration dust remover, wherein a turbulent flow shaft assembly is correspondingly arranged in each branch pipe of a spray pipeline assembly, all the turbulent flow shaft assemblies can be synchronously driven by an arranged cam driving mechanism, so that a shaft rod in each turbulent flow shaft assembly can reciprocate along the axial direction of the branch pipe, then a reducing agent liquid (limestone slurry) introduced into the branch pipe can be subjected to turbulent flow by the reciprocating motion of the set turbulent flow assemblies along the shaft rod, then the spray coverage range is in a dynamic change process under the action of the turbulent flow, in addition, the sprayed force is always in the change process, the instantaneous impact force of the spray can be enhanced, the combination efficiency of the reducing agent liquid and the limestone slurry is improved, and the desulfurization and denitration dust removal effects and efficiency are improved.

2. The invention provides a high-temperature flue gas wet desulfurization and denitrification dust remover, wherein a plurality of turbulence assemblies in a turbulence shaft assembly repeatedly scrape and wash the inner wall of a branch pipe in the reciprocating motion process along with a shaft rod, so that limestone powder taking limestone slurry as a reducing agent is prevented from being condensed in a pipeline to form accumulation, and the smoothness of the pipeline and a spray header is ensured.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a schematic perspective view of a high-temperature flue gas wet desulfurization and denitrification dust remover provided by the invention at a viewing angle;

FIG. 2 is a schematic perspective view of a high-temperature flue gas wet desulfurization and denitrification dust remover provided by the invention at another viewing angle;

FIG. 3 is a top view of a high temperature flue gas wet desulfurization and denitrification dust collector provided by the invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is an enlarged partial schematic view at B in FIG. 3;

FIG. 6 is a schematic perspective view of an assembly of the spray line assembly, the cam drive mechanism and the spoiler shaft assembly;

FIG. 7 is a top view of the spray line assembly, cam drive mechanism and spoiler shaft assembly mounting structure;

FIG. 8 is a cross-sectional view C-C of FIG. 7;

FIG. 9 is an enlarged partial schematic view at D of FIG. 8;

FIG. 10 is a perspective view of the construction of the spoiler shaft;

fig. 11 is a partially enlarged schematic view at E in fig. 10.

In the figure: 1. a spray tower body; 11. a square tower bin; 111. an air inlet; 12. an exhaust bin; 2. a spray line assembly; 21. a main pipe; 211. a stationary ring; 212. a liquid inlet pipe orifice; 22. a branch pipe; 221. a shower head; 3. a cam driving mechanism; 31. a motor fixing seat; 32. a drive motor; 321. a drive gear; 33. a bearing disk; 34. a camshaft; 341. a driven gear; 342. a diamond cam; 4. a spoiler assembly; 41. a shaft lever; 411. a ball bearing; 42. a guide plate; 43. a spring; 44. a spoiler assembly; 441. fixing a sleeve; 442. cleaning the ring; 4421. annular scraping teeth; 443. a pin shaft; 444. a spoiler blade; 5. demisting grid plates; 51. grid holes; 52. and (5) hanging fog fluff.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

Referring to the attached drawings 1-11, a high-temperature flue gas wet desulfurization and denitrification dust remover comprises aspray tower body 1, aspray pipeline assembly 2, acam driving mechanism 3, aturbulent shaft assembly 4 and ademisting grid plate 5;

thespray tower body 1 comprises asquare tower bin 11 and anexhaust bin 12 fixed at the top end of thesquare tower bin 11, wherein anair inlet 111 is formed in the side wall of one side of thesquare tower bin 11, and theair inlet 111 is located below thespray pipeline component 2.

The sprayingpipeline component 2 and thedemisting grid plate 5 are both horizontally arranged in thesquare tower bin 11.

The sprayingpipeline assembly 2 is horizontally arranged in the sprayingtower body 1, the sprayingpipeline assembly 2 comprises amain pipeline 21 andbranch pipelines 22, themain pipeline 21 is of a pipe barrel structure with openings at two ends, fixingrings 211 are arranged at two ends of themain pipeline 21, themain pipeline 21 horizontally crosses and is arranged between two side walls of the sprayingtower body 1 in a penetrating mode, and is fixedly connected with the outer side wall of the sprayingtower body 1 through the two fixingrings 211, a plurality of liquidinlet pipe orifices 212 are uniformly arranged on themain pipeline 21 along the axial direction, two rows ofbranch pipelines 22 which are equal in number and are uniformly arranged and distributed along the axial direction are communicated with themain pipeline 21, the two rows ofbranch pipelines 22 are positioned at the same horizontal height and are arranged in a mirror symmetry mode, openings are formed in the outer side ends of thebranch pipelines 22, and a plurality of sprayingheads 221 are uniformly arranged on thebranch pipelines 22 along the;

the limestone slurry for spraying prepared by mixing is communicated to the liquidinlet pipe orifice 212 through a pipeline, and the limestone slurry is uniformly dispersed from the positions of the liquidinlet pipe orifices 212 and is communicated into themain pipeline pipe 21, then enters eachbranch pipeline 22 and is sprayed out through the sprayinghead 221.

Thecam driving mechanism 3 comprises two bearing disks 33 and a cam shaft 34, the two bearing disks 33 are fixedly arranged on the two fixingrings 211 in a one-to-one correspondence manner through bolts, and the cam shaft 34 penetrates through the central shaft of themain road pipe 21 and is horizontally and rotatably arranged between the two bearing disks 33; a plurality ofrhombic cams 342 with the same number as that of thebranch pipes 22 in a row are uniformly distributed on the camshaft 34 along the axial direction, and therhombic cams 342 are correspondingly distributed between a plurality of groups of twobranch pipes 22 which are oppositely arranged one by one; thecam driving mechanism 3 further comprises amotor fixing seat 31 and a drivingmotor 32, themotor fixing seat 31 is fixedly welded on the outer side wall of thesquare tower bin 11, the drivingmotor 32 is fixedly installed on themotor fixing seat 31, adriving gear 321 is arranged on an output shaft of the drivingmotor 32, and a drivengear 341 meshed with thedriving gear 321 is arranged at the shaft end of the cam shaft 34.

Each branch pipe 22 is correspondingly provided with a turbulent flow shaft assembly 4, each turbulent flow shaft assembly 4 comprises a shaft rod 41, a guide disc 42, a spring 43 and a plurality of turbulent flow assemblies 44, the shaft rod 41 extends towards the inside along the central shaft of the branch pipe 22, the guide disc 42 is fixedly arranged at the outer port position of the branch pipe 22, the shaft rod 41 and the guide disc 42 are arranged in a sliding fit manner, the inner shaft end of the shaft rod 41 is movably embedded with a ball 411, the ball 411 is in contact with a rhombic cam 342 at the adjacent position, the spring 43 is sleeved on the shaft rod 41, the two ends of the spring 43 are welded between the outer shaft ends of the guide disc 42 and the shaft rod 41, and the plurality of turbulent flow assemblies 44 are all positioned inside the branch pipe 22 and are uniformly distributed; the turbulent flow component 44 comprises a fixed sleeve 441, a cleaning ring 442, pin shafts 443 and turbulent flow blades 444, the fixed sleeve 441 is fixedly mounted on the shaft rod 41, the cleaning ring 442 is positioned on the periphery of the fixed sleeve 441 and coaxially arranged, the cleaning ring 442 and the fixed sleeve 441 are connected through four pin shafts 443, the four pin shafts 443 are equidistantly distributed around the axial circumference of the shaft rod 41, and each pin shaft 443 is rotatably provided with a turbulent flow blade 444; the outer wall of the cleaning ring 442 is provided with a plurality of rings of annular scraping teeth 4421, and the annular scraping teeth 4421 are in contact with the inner wall of the branch pipe 22.

When desulfurization, denitrification and dust removal are carried out, high-temperature flue gas is introduced from the gas inlet 111, on one hand, limestone slurry is pumped into the spraying pipeline assembly 2 through an external pipeline and is sprayed out from the spraying head 221, on the other hand, the driving gear 321 is driven to rotate by starting the driving motor 32, the driving gear 321 drives the driven gear 341 to drive the cam shaft 34 to rotate, the diamond-shaped cam 342 rotates along with the cam shaft 34 in the rotating process, when the diamond-shaped cam 342 is in a pushing range state relative to the disturbed flow shaft assemblies 4 on two sides, the diamond-shaped cam 342 drives the shaft rod 41 to slide outwards by pushing the balls 411 in contact with the diamond-shaped cam 342, the spring 43 is gradually compressed to the maximum value in the process, when the diamond-shaped cam 342 is in a return range state, the shaft rod 41 slides inwards under the action of the spring 43, and therefore, in the rotating process of the, the shaft rod 41 will make reciprocating left and right movement along the axial direction of the branch pipe 22, during the reciprocating movement, a plurality of turbulence components 44 fixedly arranged on the shaft rod 41 will make synchronous left and right reciprocating movement, during the reciprocating movement, the turbulence blades 444 will form turbulence to the limestone slurry introduced into the branch pipe 22, thereby causing the spraying force of the limestone slurry sprayed from the spray header 221 to be always in the changing process, and the frequency is periodically changed along with the reciprocating movement of the turbulence components 44, then the traditional fixed spraying state problem is changed by the turbulence effect of the turbulence components 44, the combination efficiency of the limestone slurry and the flue gas is improved by enhancing the instantaneous spraying force, and then the efficiency of reducing and dedusting is improved, in addition, when the turbulence components 44 do reciprocating movement, the annular scraping teeth 4421 will repeatedly scrape and wash the inner wall of the branch pipe 22 in a reciprocating manner, thereby avoiding the limestone particles in the limestone slurry condensing on the inner wall of the branch pipe 22 to cause the reduction of the pipe diameter and also avoiding the blockage of the spray header 221 to ensure the normal spraying effect.

Thedefogging grid plate 5 is arranged in thespray tower body 1 and is positioned above thespray pipeline component 2. Thedefogging grid plate 5 is provided with a plurality of square grid holes 51, and two opposite side walls of eachgrid hole 51 are provided with fog hanging downhairs 52. The defogging effect is enhanced by arranging the fog-hangingfluff 52 in each of the grating holes 51.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims (7)

1. The utility model provides a high temperature flue gas wet flue gas desulfurization denitration dust remover which characterized in that: comprises a spray tower body (1), a spray pipeline assembly (2), a cam driving mechanism (3), a turbulent shaft assembly (4) and a demisting grating plate (5); wherein:

the spray pipeline component (2) is horizontally arranged in the spray tower body (1), the spraying pipeline component (2) comprises a main pipeline (21) and a branch pipeline (22), the main road pipe (21) is a pipe barrel structure with two open ends, two ends of the main road pipe (21) are provided with fixing rings (211), the main road pipe (21) horizontally crosses and penetrates between two side walls of the spray tower body (1), and is fixedly connected with the outer side wall of the spray tower body (1) through two fixing rings (211), two rows of branch pipes (22) which are equal in number and are uniformly distributed along the axial direction are communicated on the main pipe (21), the two rows of branch pipes (22) are positioned at the same horizontal height and are arranged in a mirror symmetry manner, the outer side end of the branch pipe (22) is provided with an opening, and a plurality of spray headers (221) are uniformly arranged on the branch pipe (22) along the axial direction;

the cam driving mechanism (3) comprises two bearing disks (33) and a cam shaft (34), the two bearing disks (33) are fixedly mounted on the two fixing rings (211) in a one-to-one correspondence mode, and the cam shaft (34) penetrates through the central shaft of the main pipeline (21) and is horizontally and rotatably arranged between the two bearing disks (33); a plurality of rhombic cams (342) with the same number as that of the branch pipes (22) in a row are uniformly distributed on the camshaft (34) along the axial direction, and the rhombic cams (342) are correspondingly distributed between a plurality of groups of two branch pipes (22) which are oppositely arranged one by one;

every all correspond on branch road pipe (22) and be provided with vortex axle subassembly (4), vortex axle subassembly (4) are including axostylus axostyle (41), guiding disc (42), spring (43) and a plurality of vortex subassembly (44), axostylus axostyle (41) are followed the center pin of branch road pipe (22) stretches to inside, guiding disc (42) fixed mounting in the outer port position of branch road pipe (22), axostylus axostyle (41) with guiding disc (42) sliding fit sets up, the inboard axle head activity of axostylus axostyle (41) is inlayed and is provided with ball (411), ball (411) and adjacent position diamond cam (342) contact, spring (43) cover is established on axostylus axostyle (41), just spring (43) both ends fixed connection in guiding disc (42) with between the axostylus axostyle (41) outer axle head, it is a plurality of vortex subassembly (44) all are located branch road pipe (22) are inside and along the even axial of branch road pipe Arranging in a distributed manner;

the demisting grating plate (5) is arranged in the spray tower body (1) and is positioned above the spray pipeline assembly (2).

2. The high-temperature flue gas wet desulfurization and denitrification dust remover according to claim 1, characterized in that: the turbulent flow component (44) comprises a fixed sleeve (441), a cleaning ring (442), pin shafts (443) and turbulent flow blades (444), the fixed sleeve (441) is fixedly mounted on the shaft rod (41), the cleaning ring (442) is located on the periphery of the fixed sleeve (441) and coaxially arranged, the cleaning ring (442) is connected with the fixed sleeve (441) through a plurality of pin shafts (443), the pin shafts (443) are equidistantly distributed around the axial circumference of the shaft rod (41), and each pin shaft (443) is rotatably provided with the turbulent flow blade (444); the outer wall of the cleaning ring (442) is provided with a plurality of rings of annular scraping teeth (4421), and the annular scraping teeth (4421) are in contact with the inner wall of the branch pipe (22).

3. The high-temperature flue gas wet desulfurization and denitrification dust remover according to claim 1, characterized in that: the spray tower body (1) comprises a square tower bin (11) and an exhaust bin (12) fixed at the top end of the square tower bin (11), and the spray pipeline assembly (2) and the defogging grid plates (5) are horizontally arranged in the square tower bin (11).

4. The high-temperature flue gas wet desulfurization and denitrification dust remover according to claim 3, characterized in that: cam actuating mechanism (3) still include motor fixing base (31) and driving motor (32), motor fixing base (31) fixed mounting be in on the lateral wall of square tower storehouse (11), driving motor (32) fixed mounting be in on motor fixing base (31), be provided with drive gear (321) on the output shaft of driving motor (32), the axle head of camshaft (34) be provided with driven gear (341) of drive gear (321) meshing.

5. The high-temperature flue gas wet desulfurization and denitrification dust remover according to claim 1, characterized in that: the defogging grille plate (5) is provided with a plurality of square grille holes (51), and two opposite side walls of each grille hole (51) are provided with fog-hanging fluff (52).

6. The high-temperature flue gas wet desulfurization and denitrification dust remover according to claim 1, characterized in that: an air inlet (111) is formed in the side wall of one side of the square tower bin (11), and the air inlet (111) is located below the spraying pipeline assembly (2).

7. The high-temperature flue gas wet desulfurization and denitrification dust remover according to claim 1, characterized in that: and a plurality of liquid inlet pipe orifices (212) are uniformly arranged on the main pipeline (21) along the axial direction.

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