CN210699167U

CN210699167U - Multistage cyclone dust and mist eliminator

Info

Publication number: CN210699167U
Application number: CN201921276505.5U
Authority: CN
Inventors: 白汝智
Original assignee: Tianjin Hengyuda Precision Machinery Manufacturing Co ltd
Current assignee: Tianjin Hengyuda Precision Machinery Manufacturing Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-06-09
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a multistage cyclone dust removal defroster comprises a defroster body and a flushing system, wherein the defroster body comprises a cyclone outer cylinder body, a multistage cyclone is arranged at an interval in the cyclone outer cylinder body, the cyclone outer cylinder body comprises a smooth section and an outward convex section, the smooth section is of a smooth cylindrical structure, a plurality of square water falling grooves protruding outwards are arranged on the outward convex section, the upper end part of the water falling grooves connected with the smooth section is sealed, at least one convex rib is arranged on the outer wall of the water falling grooves, and a plurality of outwards convex flow guide ridges are arranged on the inner wall of the water falling grooves along the length direction; the cyclone comprises an impeller shaft, and a plurality of cyclone blades are fixedly arranged at equal intervals along the circumferential direction of the impeller shaft; the upper end of the impeller shaft is provided with an upper flow guide column, and the lower end of the impeller shaft is provided with a lower flow guide column. The utility model discloses can improve the smoothness nature of washing in-process rivers, improve the efficiency of washing, obviously improve the effect that the defogging was removed dust.

Description

Multistage cyclone dust and mist eliminator

Technical Field

The utility model belongs to the technical field of flue gas desulfurization dust removal defogging equipment, especially, relate to a multistage cyclone dust removal defroster.

Background

The dust component in the flue gas after wet desulphurization of the coal-fired unit can be divided into two parts, one part is dust particles which are not removed and washed from the flue gas, and the other part is slurry fog drops carried by the flue gas.

The desulfurized clean flue gas contains a large amount of fog drops, the fog drops are composed of slurry liquid drops, condensed liquid drops and dust particles, when the clean flue gas enters the multistage cyclone dust removal demister, the cyclone blades are spiral, so that the flue gas containing the fog drops rotates in the cyclone cylinder after passing through the cyclone blades, gas-liquid two-phase violent rotation and disturbance are formed above the cyclone blades, and therefore fine liquid drops, fine dust particles, aerosol and other fine particles in the clean flue gas collide with each other, are agglomerated and finally are agglomerated into large liquid drops, the desulfurized clean flue gas is centrifugally moved outwards under the action of the cyclone substructure, the large liquid drops formed by polymerization collide with the wall of the cyclone cylinder and are captured and absorbed by the wall of the cyclone liquid film cylinder, and then the demisting and dust removal are realized through the washing of the washing system.

However, due to the violent disturbance and centrifugal action of the cyclone to liquid drops, dust particles and washing water flow, the washing water flow splashes upwards and downwards along the smooth cyclone cylinder wall in the washing process, and cannot fall along the cyclone cylinder wall in time, so that the dust removal and demisting effects are seriously influenced.

In order to solve the problems in the prior art, a multistage cyclone dust and mist eliminator is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wash high-efficient, effectual multistage cyclone dust removal defroster of dust removal defogging.

In order to achieve the above object, the utility model provides a following technical scheme: a multistage cyclone dust removal demister comprises a demister body and a flushing system arranged in the demister body, wherein the demister body comprises a cyclone outer cylinder body, multistage cyclones are arranged in the cyclone outer cylinder body at intervals, the cyclone outer cylinder body comprises a smooth section positioned at the upper part and an outward convex section positioned at the lower part, the smooth section is of a smooth cylindrical structure, a plurality of square water falling grooves protruding outwards are arranged on the outward convex section at equal intervals along the length direction, the upper end parts of the water falling grooves, which are connected with the smooth section, are sealed, at least one convex rib is arranged on the outer wall of the water falling groove along the length direction, a plurality of outwards protruding flow guide ribs are arranged on the inner wall of the water falling groove along the length direction, and the cross section of each flow guide rib is triangular; the cyclone comprises an impeller shaft, a plurality of cyclone blades are fixedly arranged at equal intervals along the circumferential direction of the impeller shaft, and the outer ends of the cyclone blades are fixedly connected with the cyclone outer cylinder; the upper end of the impeller shaft is provided with an upper guide column, the lower end of the impeller shaft is provided with a lower guide column, the upper guide column is in arc-shaped transition from the upper end surface of the upper guide column to the mounting surface of the swirl blades, and the lower guide column is in arc-shaped transition from the mounting surface of the swirl blades to the lower end surface of the lower guide column.

Preferably, the cross-sectional shape of the rib is an arc.

Preferably, the inclination angle of the cyclone blade and the horizontal plane is 20-35 degrees, and the eccentric angle of the axis of the cyclone blade deviating from the radial direction of the cyclone outer cylinder is 25-40 degrees.

Preferably, the flushing system comprises a plurality of sections of flushing water pipes connected in an end-to-end manner, a water inlet is formed in the upper end of each flushing water pipe, and a plurality of water spraying ports are formed in the pipe walls of the flushing water pipes.

Preferably, the center of the impeller shaft is provided with a middle hole, and the flushing water pipe is arranged in the middle hole.

Compared with the prior art, the beneficial effects of the utility model are that: (1) in the washing process, water flow containing smoke particles and liquid drops flows downwards along the water falling groove on the convex section after flowing down from the smooth section of the cyclone outer cylinder, and due to the sealing of the upper end part of the water falling groove connected with the smooth section and the flow guiding effect of the flow guiding edge, the washing water flow cannot splash upwards, and the smoke liquid drops adsorbed on the cylinder wall can be washed and discharged along the water falling groove 4, so that the washing process is more efficient; (2) set up respectively in last guide post and lower guide post about the whirl blade, its convex guide post body also can play the effect that falls and hinder, improves the smoothness nature of rivers in the washing process, and the improvement of above structure all can improve the efficiency of washing, obviously improves the effect of defogging dust removal.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the smooth section of the middle cyclone outer cylinder of the present invention;

FIG. 3 is an enlarged partial view of portion A of FIG. 2;

FIG. 4 is a schematic view of the structure of the cyclone of the present invention;

fig. 5 is a schematic structural view of the flushing system of the present invention.

In the figure: 1. a cyclone; 2. a smoothing section; 3. a convex section; 4. a water falling groove; 5. a rib is protruded; 6. a flow guide edge; 7. a swirl vane; 8. an impeller shaft; 9. an upper flow guiding column; 10. a lower flow guiding column; 11. a water inlet; 12. and (5) flushing the water pipe.

Detailed Description

The following describes a preferred embodiment of the present invention with reference to the drawings, and the technical solution of a preferred embodiment of the present invention will be clearly and completely described.

Referring to fig. 1-5, the present invention includes a demister body and a washing system installed in the demister body, wherein the demister body includes a cyclone outer cylinder, and a plurality of stages of cyclones 1 are arranged at intervals in the cyclone outer cylinder.

The cyclone outer cylinder body comprises a smooth section 2 positioned at the upper part and an outer convex section 3 positioned at the lower part, the smooth section 2 is of a smooth cylindrical structure, a plurality of square water falling grooves 4 protruding outwards are arranged on the outer convex section 3 at equal intervals along the length direction, the upper end part of the water falling groove 4 connected with the smooth section 2 is sealed, at least one convex rib 5 is arranged on the outer wall of the water falling groove 4 along the length direction, the strength of the water falling groove 4 can be improved by arranging the convex ribs 5, a plurality of outwards convex flow guide ridges 6 are arranged on the inner wall of the water falling groove 4 along the length direction, the cross section of each flow guide ridge 6 is triangular, and a triangular structure can play a better flow guide effect; the cyclone 1 comprises an impeller shaft 8, a plurality of cyclone blades 7 are fixedly arranged at equal intervals along the circumferential direction of the impeller shaft 8, and the outer ends of the cyclone blades 7 are fixedly connected with a cyclone outer cylinder; the upper end of the impeller shaft 8 is provided with an upper guide column 9, the lower end of the impeller shaft 8 is provided with a lower guide column 10, the upper guide column 9 is in arc-shaped transition from the upper end surface of the upper guide column 9 to the installation surface of the swirl vanes 7, and the lower guide column 10 is in arc-shaped transition from the installation surface of the swirl vanes 7 to the lower end surface of the lower guide column 10.

The section of the convex rib 5 is arc-shaped.

The inclination angle of the cyclone blades 7 and the horizontal plane is 20-35 degrees, the axial line of the cyclone blades 7 deviates from the radial eccentric angle of the cyclone outer cylinder body by 25-40 degrees, and the cyclone blades form a spiral shape to play a role in disturbing flow.

The flushing system comprises a plurality of sections of flushing water pipes 12 connected in a tail-to-tail mode, a water inlet 11 is formed in the upper end of each flushing water pipe 12, and a plurality of water spraying ports are formed in the pipe wall of each flushing water pipe 12; the center of the impeller shaft 8 is provided with a middle hole, and the flushing water pipe 12 is arranged in the middle hole.

The utility model discloses a working process does: the desulfurized clean flue gas contains a large amount of fog drops, the fog drops are composed of slurry liquid drops, condensed liquid drops and dust particles, when the part of the clean flue gas enters the multistage cyclone dust removal demister, the inclination angle of the cyclone blade 7 and the horizontal plane is 20-35 degrees, the eccentric angle of the axis of the cyclone blade 27 deviating from the radial direction of the cyclone outer cylinder body is 25-40 degrees, a spiral shape is formed, the fog-containing flue gas rotates in the cyclone outer cylinder body after passing through the cyclone blade 7, severe rotation and disturbance of gas-liquid two phases are formed above the cyclone blade 7, so that fine liquid drops, fine dust particles, aerosol and other fine particulate matters in the clean flue gas collide with each other, are aggregated and finally aggregated into large liquid drops, and then the desulfurized clean flue gas centrifugally moves outwards under the structural action of the cyclone 1, and the large liquid drops formed by aggregation collide with the cyclone cylinder wall and are captured and absorbed by a liquid film, then the demisting and dedusting are realized through the flushing of the flushing system.

In the washing process, after water flow containing smoke particles and liquid drops flows down from the smooth section 2 of the cyclone outer cylinder body, the water flow can flow downwards along the water falling groove 4 on the convex section 3, and due to the sealing of the upper end part of the water falling groove 4 connected with the smooth section 2 and the flow guiding effect of the flow guiding ridge 6, the washing water flow cannot splash upwards, and the smoke liquid drops adsorbed on the cylinder wall can be washed and discharged along the water falling groove 4; in addition, the arc-shaped guide columns of the upper guide column 9 and the lower guide column 10 which are respectively arranged above and below the rotational flow blades 7 can also play a role in reducing resistance, so that the fluency of water flow in the washing process is improved; the improvement of above structure all can improve the efficiency of washing, obviously improves the effect of defogging dust removal.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multistage cyclone dust removal defroster, includes the defroster body and installs the rinse-system in the defroster body, the defroster body includes the outer barrel of cyclone, and the internal interval of cyclone urceolus is provided with multistage whirl (1), its characterized in that: the cyclone outer cylinder comprises a smooth section (2) positioned at the upper part and an outer convex section (3) positioned at the lower part, the smooth section (2) is of a smooth cylindrical structure, a plurality of square water falling grooves (4) protruding outwards are arranged on the outer convex section (3) at equal intervals along the length direction, the upper end part of the water falling groove (4) connected with the smooth section (2) is sealed, at least one convex rib (5) is arranged on the outer wall of the water falling groove (4) along the length direction, a plurality of flow guide ridges (6) protruding outwards are arranged on the inner wall of the water falling groove (4) along the length direction, and the cross section of each flow guide ridge (6) is triangular; the cyclone rotor (1) comprises an impeller shaft (8), a plurality of cyclone blades (7) are fixedly arranged at equal intervals along the circumferential direction of the impeller shaft (8), and the outer ends of the cyclone blades (7) are fixedly connected with the cyclone outer cylinder; the impeller shaft is characterized in that an upper guide column (9) is arranged at the upper end of the impeller shaft (8), a lower guide column (10) is arranged at the lower end of the impeller shaft (8), the upper guide column (9) is in arc-shaped transition from the upper end surface of the upper guide column (9) to the mounting surface of the swirl vane (7), and the lower guide column (10) is in arc-shaped transition from the mounting surface of the swirl vane (7) to the lower end surface of the lower guide column (10).

2. The multi-stage cyclonic dust and mist eliminator of claim 1, wherein: the section of the convex rib (5) is arc-shaped.

3. The multi-stage cyclonic dust and mist eliminator of claim 1, wherein: the inclination angle of the cyclone blades (7) and the horizontal plane is 20-35 degrees, and the eccentric angle of the axis of the cyclone blades (7) deviating from the radial direction of the cyclone outer cylinder body is 25-40 degrees.

4. The multi-stage cyclonic dust and mist eliminator of claim 1, wherein: the flushing system comprises a plurality of sections of flushing water pipes (12) which are connected end to end, a water inlet (11) is formed in the upper end of each flushing water pipe (12), and a plurality of water spraying nozzles are formed in the pipe walls of the flushing water pipes (12).

5. The multi-stage cyclonic dust and mist eliminator of claim 4, wherein: the center of the impeller shaft (8) is provided with a middle hole, and the flushing water pipe (12) is arranged in the middle hole.