CN114146522A - Venturi wet dust removal device - Google Patents
Venturi wet dust removal device Download PDFInfo
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- CN114146522A CN114146522A CN202111445181.5A CN202111445181A CN114146522A CN 114146522 A CN114146522 A CN 114146522A CN 202111445181 A CN202111445181 A CN 202111445181A CN 114146522 A CN114146522 A CN 114146522A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2444—Discharge mechanisms for the classified liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
- B01D47/08—Spray cleaning with rotary nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/10—Venturi scrubbers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/04—Regenerating the washing fluid
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- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a venturi wet dust collector, relate to dust collector's field, it includes venturi, water spray mechanism, drip catcher and circulation water supply mechanism, venturi and drip catcher intercommunication, venturi is including the reducer that connects gradually, choke and divergent pipe, the inner chamber of choke is established to the atomizing chamber, the choke includes preceding choke and back choke, water spray mechanism includes first ring shell, second ring shell and driving piece, first ring shell rotates with preceding choke to be connected, second ring shell and back choke fixed connection, be formed with the water ring chamber between first ring shell and the second ring shell, set up the inlet opening with water ring chamber intercommunication on the second ring shell, circulation water supply mechanism leads to water in the water ring chamber through the inlet opening, a plurality of wash ports have been seted up on the first ring shell, the driving piece is connected with first ring shell, be used for driving first ring shell and rotate. This application makes the rivers that let in the venturi more even comprehensive, and rivers can fully atomize to carry out abundant combination with the dirt particle in the flue gas, improve dust removal purification effect.
Description
Technical Field
The application relates to the field of dust removal devices, in particular to a venturi wet dust removal device.
Background
The dust remover has various types, different structural forms and different dust removing effects. Wet dust collectors, commonly known as "water dust collectors", are devices that bring dusty gases into intimate contact with water or other liquids, and use inertial collisions and other effects of water droplets and particles to trap or enlarge the particles.
The related Venturi wet dust removal device mainly comprises a Venturi tube and a drop catcher, wherein the Venturi tube comprises a reducing tube, a throat tube and a gradually expanding tube. The working principle of the Venturi tube wet dust collector is as follows: the flue gas containing dust enters the reducing pipe, and the flow velocity is gradually increased along the pipe. Water or other liquid is sprayed from the throat and atomized by the high velocity gas stream. The dust particles in the gas are lubricated by contact with the liquid droplets. After entering the divergent pipe, the flow velocity is gradually reduced, dust particles are mutually bonded, and the particles are enlarged and are easy to remove. The flue gas pretreated by the Venturi tube is tangentially led out of the lower part of the drop catcher, under the action of centrifugal force, water and lubricated dust particles are thrown onto the inner wall of the drop catcher and flow out of the drop catcher, and the purified gas is discharged from the top of the drop catcher.
In view of the above-mentioned related technologies, the inventor believes that the water outlet position of the throat is kept unchanged, and it is difficult to control the flow uniformity of the water curtain formed by the water flow at the throat, and when the flue gas collides with the water curtain sprayed into the throat, it is difficult to ensure the good atomization effect of the high-speed flue gas on the water flow, and then the combination effect of the mist droplets and the dust particles in the flue gas is poor, which affects the dust removal effect.
Disclosure of Invention
In order to improve the above-mentioned problem, the present application provides a venturi wet dust collector.
The application provides a venturi wet dedusting device adopts following technical scheme:
a wet-type Venturi dust collector comprises a Venturi tube, a water spraying mechanism, a droplet catcher and a circulating water supply mechanism, wherein the Venturi tube is communicated with the droplet catcher, the Venturi tube comprises a reducing tube, a throat tube and a gradually expanding tube which are sequentially connected, the reducing tube, the throat tube and the gradually expanding tube are sequentially arranged along the air inlet direction of air, the inner cavity of the throat tube is provided with an atomizing cavity, the throat tube comprises a front throat tube connected with the reducing tube and a rear throat tube connected with the gradually expanding tube, the water spraying mechanism is arranged between the front throat tube and the rear throat tube, the water spraying mechanism comprises a first annular shell, a second annular shell and a driving piece, the first annular shell is rotatably connected with the front throat tube, the second annular shell is fixedly connected with the rear throat tube, the first annular shell and the second annular shell are matched with each other, a water annular cavity is formed between the first annular shell and the second annular shell, and a water inlet hole communicated with the water annular cavity is formed in the second annular shell, the circulating water supply mechanism is used for introducing water into the water ring cavity through the water inlet hole, the first ring shell is provided with a plurality of water discharging holes communicated with the water ring cavity, the water ring cavity is communicated with the atomizing cavity through the water discharging holes, and the driving piece is connected with the first ring shell and used for driving the first ring shell to rotate.
Through adopting above-mentioned technical scheme, dusty flue gas flows through the reducer in proper order, choke and divergent pipe, when the flue gas gets into the reducer, the velocity of flow of flue gas crescent, afterwards, high-speed flue gas flows into in the choke, at this moment, circulation water supply mechanism leads to water to the water ring intracavity through the inlet hole, rivers are discharged into the atomizing intracavity of choke through the wash port of arranging along first ring shell circumference, meanwhile, the first ring shell of drive assembly drive rotates, the wash port rotates in the week side of the cross section of atomizing chamber, make rivers can form even water curtain in the atomizing intracavity, thereby when high-speed flue gas passes through the choke, can and take place abundant and even striking between the water curtain, make the rivers that let in the atomizing chamber can fully atomize, and fully combine with the dust particle in the flue gas, then can improve the dust removal effect.
Preferably, the driving piece includes a plurality of spinning disks, the spinning disk is located the atomizing chamber, spinning disk and first ring shell fixed connection, the spinning disk is arranged along the circumference of first ring shell.
By adopting the technical scheme, when high-speed flue gas passes through the throat pipe, the high-speed flue gas flows through the spinning disk, and the spinning disk drives the first ring shell to rotate under the action of high-speed wind force of the high-speed flue gas, so that the rotary driving of the first ring shell is realized, the kinetic energy of the high-speed flue gas is fully utilized, no power element is additionally arranged to drive the first ring shell, and the energy consumption is reduced.
Preferably, the first ring shell comprises a first ring plate, a first ring and a second ring, the second ring shell comprises a second ring plate, the first ring plate is rotatably connected with one end, close to the rear throat, of the front throat, the first ring and the second ring are fixed on one surface, far away from the front throat, of the first ring plate, the first ring and the second ring are coaxial, and the second ring is located on the inner side of the first ring; the second ring plate is fixed at one end, close to the front throat, of the rear throat, one ends, far away from the first ring plate, of the first ring plate and the second ring plate are abutted to the second ring plate, the water inlet hole is formed in the second ring plate, the plurality of water drain holes are formed in the second ring plate, and the water ring cavity is located between the first ring plate and the second ring plate.
Preferably, a connecting disc is fixed at one end, far away from the reducing pipe, of the front throat pipe, a connecting ring strip is fixedly connected to one surface, close to the connecting disc, of the first ring plate, the connecting ring strip and the first ring plate are coaxial, a connecting ring groove for enabling the connecting ring strip to slide is formed in the connecting disc, and the connecting ring strip is located in the connecting ring groove.
By adopting the technical scheme, the first annular shell is rotatably connected with the front throat pipe through the connecting disc, and when the first annular plate rotates on the connecting disc, the connecting annular strip rotates in the connecting annular groove, so that the stability of the rotating process of the first annular shell is guaranteed.
Preferably, the second ring shell further comprises an outer collar, the outer collar is fixed on the surface, away from the rear throat pipe, of the second ring plate, the outer collar and the first collar are coaxial, and a plurality of sealing members are arranged between the first collar and the outer collar.
Through adopting above-mentioned technical scheme, set up the sealing member between first lantern ring and outer lantern ring, improve the leakproofness between first ring shell and the second ring shell, the water of water ring intracavity is difficult for leaking to the outside through the gap from between first lantern ring and the outer lantern ring.
Preferably, a plurality of shunting strips are fixed on the second ring plate, the shunting strips are distributed along the circumferential direction of the second ring plate, and the shunting strips are positioned on one side, away from the first lantern ring, of the second lantern ring.
Through adopting above-mentioned technical scheme, when first ring shell takes place to rotate under the drive of spinning disk, the water of water ring intracavity passes through the wash port and emits into the atomizing intracavity, and first ring shell is rotating the in-process, and the wash port is constantly followed each reposition of redundant personnel strip and is passed through to reposition of redundant personnel strip constantly changes the water spray direction of rivers, then rivers can fully and high-speed between the flue gas collision contact, the atomizing of rivers is more abundant, and then the guarantee dust removal effect.
Preferably, the drip catcher includes the casing and sets up the washing mechanism in the casing, washing mechanism includes washing pipe and a plurality of atomizing nozzle, washing pipe sets up in the casing, the casing is worn out and the circulation water supply mechanism is connected to the one end of washing pipe, atomizing nozzle and washing union coupling, atomizing nozzle arranges along the length direction of washing pipe.
By adopting the technical scheme, flue gas pretreated by the Venturi tube is tangentially discharged into the drop catcher, water and lubricated dust particles are thrown onto the inner wall of the drop catcher and flow downwards out of the drop catcher under the action of centrifugal force, and purified gas is discharged from the top of the drop catcher; the washing mechanism sprays water mist into the barrel through the washing pipe and the atomizing nozzle on the washing pipe, and the water mist further adsorbs and catches the flue gas passing through the shell, so that the dust removal and purification effects are further improved.
Preferably, a catching and dripping inlet is formed in the shell, the Venturi tube is communicated with the shell through the catching and dripping inlet, the washing mechanism further comprises a plurality of rotating blades, the washing pipe is rotatably connected with the shell, the rotating blades are located in the shell and fixedly connected with the washing pipe, the rotating blades are arranged along the circumferential direction of the washing pipe and are abutted against the bottom surface of the inner cavity of the shell.
Through adopting above-mentioned technical scheme, when the flue gas flows into in the casing through catching the import of dripping, rotating vane rotates under the wind-force effect of flue gas, and then rotating vane drives the washing pipe and rotates to effectively improve the coverage of the water smoke that the washing pipe sprayed, water smoke sprays more evenly, and then improves the dust removal effect to the flue gas, and rotating vane plays to strike off the effect to the spot of casing bottom when rotating, reduces piling up of spot in the casing.
Preferably, circulation water supply mechanism includes sedimentation tank, feed tank and circulating pump, the bottom of casing is provided with the drain, the casing is connected with the blow off pipe through the drain, the one end and the sedimentation tank intercommunication of drain are kept away from to the blow off pipe, the intercommunication has the feed pipe between sedimentation tank and the feed tank, be connected with the delivery pipe on the feed tank, the circulating pump sets up on the delivery pipe, the one end that the feed tank was kept away from to the delivery pipe is connected with the washing and advances the pipe and spray water and advance the pipe, the spray water advances the one end that the pipe was kept away from to the pipe and the inlet opening intercommunication of first ring shell, the washing advances the one end and the washing pipe intercommunication that the delivery pipe was kept away from to the pipe.
Through adopting above-mentioned technical scheme, the sewage that produces after removing dust to the flue gas is arranged the sedimentation tank through the blow off pipe, and sewage subsides in the sedimentation tank, and in the feed water tank was arranged into through the feed pipe to the supernatant in the sedimentation tank, the feed water tank passed through the delivery pipe with water drainage in to choke and the casing, the realization was to the cyclic utilization of water resource, reduced resource consumption.
Preferably, the top of the shell is provided with an air outlet, and the shell is provided with a demister close to the air outlet.
Through adopting above-mentioned technical scheme, the clean flue gas after dust removal purification passes through the gas vent and discharges, and the defroster is arranged in separating the liquid drop that carries in the clean flue gas of exhaust, and the dry cleanness of guarantee exhaust flue gas.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the position of the drain hole in the throat pipe is changed in a continuous rotating mode, so that a water spraying mechanism can form a uniform and comprehensive water curtain spraying effect in the throat pipe, when high-speed flue gas passes through the throat pipe, sufficient and uniform impact can be generated between the high-speed flue gas and the water curtain, water flow introduced into the throat pipe can be sufficiently atomized and is sufficiently combined with dust particles in the flue gas, the dust removal effect can be improved, the requirement on the flow velocity of the flue gas is reduced compared with the existing Venturi pipe, and the practicability of the dust removal device is improved;
2. by arranging the flow dividing strips, the drain holes continuously pass through the flow dividing strips in the rotating process of the first annular shell, so that the flow dividing strips continuously change the water spraying direction of water flow, the water flow can be fully collided and contacted with high-speed flue gas, the atomization of the water flow is more sufficient, and the dust removal effect is further improved;
3. through setting up rotating vane, when the flue gas flowed into in the casing, rotating vane rotated under the wind-force effect of flue gas, and rotating vane drives the washing pipe and rotates to effectively improve the coverage of the water smoke that the washing pipe sprayed, water smoke sprays more evenly, and then improves the dust removal effect to the flue gas, and rotating vane plays to strike off the effect to the spot of casing bottom when rotating, reduces piling up of spot in the casing.
Drawings
FIG. 1 is a schematic view of the overall structure of a venturi wet dust collector according to an embodiment of the present application.
FIG. 2 is a sectional view of an embodiment of the present application for embodying the internal structure of a venturi.
FIG. 3 is an exploded view of a venturi in an embodiment of the present application.
Fig. 4 is a schematic structural diagram of the first annular shell in the embodiment of the present application.
Fig. 5 is a partially enlarged view of a portion a in fig. 2.
Fig. 6 is a partial sectional view of an embodiment of the present application for embodying the internal structure of a droplet catcher.
Description of reference numerals: 1. a venturi tube; 11. a reducer; 12. a throat; 121. a front throat; 122. a connecting disc; 1221. a connecting ring groove; 123. a rear throat; 124. an atomizing chamber; 13. a divergent pipe; 2. a water spraying mechanism; 21. a first annular shell; 211. a first ring plate; 2111. connecting the ring strips; 212. a first collar; 213. a second collar; 2131. a drain hole; 214. a water ring cavity; 22. a second toroidal shell; 221. a second ring plate; 2211. a water inlet hole; 222. shunting strips; 223. an outer collar; 224. a seal member; 225. sealing the ring groove; 23. a drive member; 231. a spinning disk; 3. a drip catcher; 31. a housing; 311. a drip catching inlet; 312. an exhaust port; 313. a sewage draining outlet; 314. a demister; 32. a washing mechanism; 321. a wash pipe; 322. an atomizing nozzle; 323. a rotating blade; 4. a circulating water supply mechanism; 41. a sedimentation tank; 42. a water supply tank; 43. a circulation pump; 44. a blow-off pipe; 45. a water supply pipe; 46. a water supply pipe; 47. water is sprayed into the pipe; 48. washing the inlet pipe; 5. and (7) mounting a bracket.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses venturi wet dust collector. Referring to fig. 1 and 2, the venturi wet dust removal device comprises a mounting bracket 5, a venturi tube 1, a water spraying mechanism 2, a drop catcher 3 and a circulating water supply mechanism 4, wherein the venturi tube 1 and the drop catcher 3 are mounted on the mounting bracket 5, the venturi tube 1 is connected with the drop catcher 3, the venturi tube 1 comprises a reducing tube 11, a throat tube 12 and a diverging tube 13 which are sequentially welded and fixed, the reducing tube 11, the throat tube 12 and the diverging tube 13 are sequentially arranged along the air inlet direction of air, and one end of the diverging tube 13, which is far away from the throat tube 12, is connected with the drop catcher 3; the water spraying mechanism 2 is installed on the throat pipe 12, the water spraying mechanism 2 is connected with the circulating water supply mechanism 4, the water spraying mechanism 2 is used for introducing water into the throat pipe 12, and the droplet catcher 3 is used for removing fog droplets and dust particles in introduced smoke and ensuring the dryness and cleanness of discharged gas.
Referring to fig. 2, the diameter of reducer 11 is in the direction that is close to throat 12 convergent setting for when flue gas flows through reducer 11, the pressure energy of air current changes kinetic energy gradually, and the velocity of flow of flue gas constantly increases, ensures the collision atomization effect of flue gas to rivers, makes the dust particle in the flue gas caught by the fog droplet. The diameter of the divergent pipe 13 is gradually increased in the direction far away from the throat pipe 12, and after the flue gas passes through the throat pipe 12 and enters the divergent pipe 13, the flow velocity is gradually reduced, dust particles are mutually bonded, so that the particles are enlarged and are easier to remove.
Referring to fig. 2 and 3, the inner cavity of throat 12 is an atomizing cavity 124, throat 12 includes a front throat 121 and a rear throat 123, front throat 121 is coaxially welded and fixed with reducer 11, and rear throat 123 is coaxially welded and fixed with reducer 13. The water spraying mechanism 2 is positioned between the front throat 121 and the rear throat 123, and the water spraying mechanism 2 comprises a driving part 23 and a first annular shell 21 and a second annular shell 22 which are matched with each other.
Referring to fig. 3 and 4, the first ring shell 21 includes a first ring plate 211, a first collar 212 and a second collar 213, the first ring plate 211 and one end of the front throat 121 close to the rear throat 123 are rotatably connected, the first collar 212 and the second collar 213 are both welded and fixed on a surface of the first ring plate 211 away from the front throat 121, the second collar 213 is located on an inner side of the first collar 212, and the first collar 212 and the second collar 213 are coaxial. The driving member 23 is connected to the first ring housing 21 and is used for driving the first ring housing 21 to rotate.
Referring to fig. 3 and 5, a connecting disc 122 is coaxially welded and fixed to one end of the front throat 121 far from the reducer 11, a connecting ring 2111 is welded and fixed to one surface of the first ring plate 211 near the connecting disc 122, the connecting ring 2111 and the first ring plate 211 are coaxial, a connecting ring groove 1221 for the connecting ring 2111 to slide is formed in the connecting disc 122, and the connecting ring 2111 is located in the connecting ring groove 1221. When the driving member 23 drives the first ring shell 21 to rotate, the connecting ring strip 2111 slides in the connecting ring groove 1221, and the rotational stability of the first ring shell 21 is guaranteed. The cross section of the connecting ring strip 2111 is in a shape of a major arc, and the connecting ring groove 1221 is matched with the connecting ring strip 2111, so that the stability of connection between the first ring plate 211 and the connecting disc 122 is guaranteed.
Referring to fig. 2 and 3, the second ring shell 22 includes a second ring plate 221 and an outer collar 223, the second ring plate 221 is welded and fixed to one end of the rear throat 123 close to the front throat 121, the outer collar 223 is welded and fixed to a side of the second ring plate 221 away from the rear throat 123, the outer collar 223 is coaxial with the second collar 213, and the outer collar 223 is disposed on an outer side wall of the second collar 213 in an abutting manner. The ends of the first and second collars 212, 213 remote from the first ring plate 211 are each in abutment with the second ring plate 221. A water ring cavity 214 is formed between the first ring housing 21 and the second ring housing 22, and the water ring cavity 214 is located between the first collar 212 and the second collar 213. The second collar 213 is provided with a plurality of drainage holes 2131 communicated with the water ring cavity 214, the water ring cavity 214 is communicated with the atomizing cavity 124 through the drainage holes 2131, and the drainage holes 2131 are uniformly distributed along the circumferential direction of the second collar 213. The second annular plate 221 is provided with a water inlet 2211 communicated with the water annular cavity 214, and the circulating water supply mechanism 4 supplies water to the water annular cavity 214 through the water inlet 2211.
Referring to fig. 2 and 3, the flue gas flows into the throat 12 through the reducer 11, the circulating water supply mechanism 4 supplies water into the water ring cavity 214 through the water inlet 2211, the water flows into the throat 12 through the plurality of water discharge holes 2131 along the first ring shell 21, meanwhile, the driving member 23 drives the first ring shell 21 to rotate, the water discharge holes 2131 rotate around the cross section of the atomizing cavity 124, and the water flow can form an even water curtain in the atomizing cavity 124, so that when the high-speed flue gas passes through the throat 12, sufficient and even impact can occur between the high-speed flue gas and the water curtain, the water flow introduced into the atomizing cavity 124 can be sufficiently atomized, and can be sufficiently combined with dust particles in the flue gas, and the dust removal effect is improved. And compare in current venturi 1, reduced the requirement to the velocity of flow of flue gas, current venturi 1 need maintain more than 60m/s to the velocity of flow of flue gas just can ensure higher dust removal effect, and this application venturi 1 only needs to maintain more than 40m/s to the velocity of flow of flue gas and can ensure higher dust removal effect.
Referring to fig. 3 and 5, in order to ensure the sealing performance between the first ring housing 21 and the second ring housing 22, a plurality of sealing members 224 are disposed between the outer sleeve 223 and the first sleeve 212, in this embodiment, two sealing members 224 are disposed in parallel to each other and are disposed on the outer wall of the first sleeve 212, and the sealing members 224 are VA water seal rotary seal rings. The outer wall that is close to each other between outer lantern ring 223 and the first lantern ring 212 all offers the seal ring groove 225 that supplies the installation of sealing member 224, and sealing member 224 is located corresponding seal ring groove 225 for the difficult condition of revealing that appears of rivers in the water ring chamber 214.
Referring to fig. 2 and 3, driving piece 23 includes a plurality of spinning disks 231, and spinning disk 231 is located atomizing chamber 124, and spinning disk 231 welded fastening is in the one side that first crown plate 211 is close to preceding choke 121, and a plurality of spinning disks 231 evenly arranges along the circumference of first crown plate 211. When the high-speed flue gas passes through the throat 12, the rotational flow sheet 231 applies tangential component force to the first annular shell 21 under the action of the wind force of the high-speed flue gas, so as to drive the first annular shell 21 to rotate, thereby realizing the rotary drive of the first annular shell 21, fully utilizing the kinetic energy of the high-speed flue gas, and reducing the energy consumption without additionally configuring other power elements to drive the first annular shell 21.
Referring to fig. 2 and 3, a plurality of flow dividing strips 222 are fixedly welded on one surface of the second annular plate 221 away from the rear throat 123, the flow dividing strips 222 are located in the atomizing cavity 124, the length direction of the flow dividing strips 222 is perpendicular to the second annular plate 221, the flow dividing strips 222 are located on one side of the second annular ring 213 away from the first annular ring 212, and the flow dividing strips 222 are abutted against the inner side wall of the second annular ring 213. When first ring shell 21 takes place to rotate under spinning disk 231's drive, the water in water ring cavity 214 discharges into atomizing chamber 124 through wash port 2131, first ring shell 21 is at the rotation in-process, wash port 2131 constantly passes through from each reposition of redundant personnel strip 222, reposition of redundant personnel strip 222 separates into two directions with each wash port 2131's rivers and discharges, and along with the rotation of second lantern ring 213, reposition of redundant personnel strip 222 constantly changes the water spray direction of rivers, make then rivers can be sufficient and the high-speed flue gas between the collision contact, the atomizing of rivers is more abundant, further improve dust removal effect. The cross section of the flow dividing strip 222 is triangular, and one edge of the flow dividing strip 222 abuts against the inner side wall of the second collar 213, so as to improve the flow dividing effect of the flow dividing strip 222 on the water flow discharged from the water discharge hole 2131, and the water curtain formed in the throat pipe 12 by the water spraying mechanism 2 is more uniform.
Referring to fig. 6, the droplet catcher 3 includes a housing 31 and a washing mechanism 32 installed in the housing 31, the housing 31 is welded and fixed on the mounting bracket 5, a droplet catching inlet 311 is provided at the bottom of the peripheral surface of the housing 31, one end of the divergent pipe 13 far away from the throat pipe 12 is communicated with the droplet catching inlet 311, an air outlet 312 is provided at the top of the housing 31, a demister 314 is installed at the position of the housing 31 near the air outlet 312, droplets carried in the clean flue gas discharged are separated by the demister 314, and the dry and clean of the discharged flue gas is ensured. The washing mechanism 32 comprises a washing pipe 321 and a plurality of atomizing nozzles 322, the washing pipe 321 is located in the shell 31, the washing pipe 321 is vertically arranged on a central axis of the shell 31, the washing pipe 321 is rotatably connected with the shell 31, the bottom end of the washing pipe 321 penetrates out of the shell 31 and is connected with the circulating water supply mechanism 4, the atomizing nozzles 322 are all communicated with the washing pipe 321, the atomizing nozzles 322 are arranged along the length direction of the washing pipe 321, and the spraying direction of the atomizing nozzles 322 inclines upwards. The flue gas pretreated by the Venturi tube 1 is discharged into the drop catcher 3, water and lubricated dust particles are thrown onto the inner wall of the drop catcher 3 and flow towards the bottom under the action of centrifugal force, and the purified gas is discharged from the top of the drop catcher 3; the washing mechanism 32 sprays water mist into the cylinder through the washing pipe 321 and the atomizing nozzle 322, and the water mist further adsorbs and captures dust particles of the flue gas passing through the casing 31, so as to further improve the dust removal and purification effect.
Referring to fig. 6, the washing mechanism 32 further includes a plurality of rotating blades 323, in this embodiment, four rotating blades 323 are provided, the rotating blades 323 are welded and fixed to the washing pipe 321, the rotating blades 323 are uniformly arranged along the circumferential direction of the washing pipe 321, the rotating blades 323 are arc-shaped in the length direction, and the rotating blades 323 abut against the bottom surface of the inner cavity of the housing 31. When the flue gas is discharged into the shell 31 through the droplet catching inlet 311, the rotating blades 323 rotate under the action of the wind force of the high-speed flue gas, and the rotating blades 323 drive the washing pipe 321 to rotate; the rotating blades 323 can scrape off the stain at the bottom of the shell 31 when rotating, and the washing pipe 321 rotates, so that the water mist sprayed by the washing pipe 321 and the atomizing nozzle 322 can be covered more widely, and the dust removal effect on the smoke is better.
Referring to fig. 1 and 6, the circulating water supply mechanism 4 includes a settling basin 41 and a water supply tank 42, a drain 313 is provided at the bottom of the housing 31, a drain 44 is connected to the housing 31 through the drain 313, one end of the drain 44, which is far away from the housing 31, is communicated with the settling basin 41, the settling basin 41 is located at the bottom of the housing 31, the water supply tank 42 is located at one side of the settling basin 41, a water supply pipe 45 is provided between the settling basin 41 and the water supply tank 42, and the settling basin 41 is communicated with the water supply tank 42 through the water supply pipe 45. The water supply tank 42 is connected with a water supply pipe 46, the water supply pipe 46 is connected with a circulating pump 43, one end of the water supply pipe 46, which is far away from the water supply tank 42, is communicated with a washing inlet pipe 48 and a water spraying inlet pipe 47, one end of the water spraying inlet pipe 47, which is far away from the water supply pipe 46, is communicated with a water inlet hole 2211 of the first ring shell 21, one end of the washing inlet pipe 48, which is far away from the water supply pipe 46, is communicated with the washing pipe 321, and the washing inlet pipe 48 is rotatably connected with the washing pipe 321. The sewage generated after the flue gas is dedusted and purified in the shell 31 is discharged into the sedimentation tank 41 through the sewage discharge pipe 44, the sewage is settled in the sedimentation tank 41, the supernatant in the sedimentation tank 41 is discharged into the water supply tank 42 through the water supply pipe 45, and the water supply tank 42 conveys water into the throat pipe 12 and the shell 31 through the water supply pipe 46 and the circulating pump 43, so that the water resource is recycled.
The embodiment of the application provides a venturi wet dedusting device's implementation principle does: the dust-containing flue gas flows through the reducing pipe 11, the throat pipe 12 and the expanding pipe 13 in sequence, the high-speed flue gas flows into the throat pipe 12, at the moment, the circulating water supply mechanism 4 supplies water to the water ring cavity 214 through the water inlet holes 2211, and the water flow is discharged into the atomizing cavity 124 of the throat pipe 12 through the water discharge holes 2131 along the first ring shell 21. Meanwhile, the high-speed flue gas passes through the spinning disk 231 and drives the first ring shell 21 to rotate, and the drain hole 2131 rotates around the atomizing cavity 124, so that water flow can form an even water curtain in the atomizing cavity 124, when the high-speed flue gas passes through the throat 12, sufficient and even impact can be generated between the water curtain and the high-speed flue gas, and the water flow introduced into the atomizing cavity 124 can be sufficiently atomized and sufficiently combined with dust particles in the flue gas.
The flue gas pretreated by the Venturi tube 1 is tangentially discharged into the shell 31, and liquid drops and dust particles are thrown onto the inner wall of the droplet catcher 3 and flow out of the device downwards under the action of centrifugal force; during this period, the washing mechanism 32 sprays water mist into the drum through the washing pipe 321 and the atomizing nozzle 322, and the water mist further adsorbs and captures dust particles of the flue gas passing through the casing 31, so as to further improve the dust removal and purification effect. The purified gas is discharged from an exhaust port 312 of the shell 31 through a demister 314, sewage is discharged into the sedimentation tank 41 through a sewage discharge pipe 44, supernatant in the sedimentation tank 41 is discharged into the water supply tank 42 through a water supply pipe 45, and the water supply tank 42 conveys water into the throat pipe 12 and the shell 31 through a water supply pipe 46, so that the water resource is recycled.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a venturi wet dust collector, includes venturi (1), water spray mechanism (2), drip catcher (3) and circulation water supply mechanism (4), venturi (1) and drip catcher (3) intercommunication, venturi (1) is including reducer (11), choke (12) and the gradually-expanding pipe (13) that connect gradually, the direction of admitting air of gas is arranged in proper order along reducer (11), choke (12) and gradually-expanding pipe (13), its characterized in that: the inner cavity of the throat pipe (12) is set as an atomizing cavity (124), the throat pipe (12) comprises a front throat pipe (121) connected with a reducing pipe (11) and a rear throat pipe (123) connected with a gradually expanding pipe (13), the water spraying mechanism (2) is installed between the front throat pipe (121) and the rear throat pipe (123), the water spraying mechanism (2) comprises a first annular shell (21), a second annular shell (22) and a driving piece (23), the first annular shell (21) is rotatably connected with the front throat pipe (121), the second annular shell (22) is fixedly connected with the rear throat pipe (123), the first annular shell (21) is matched with the second annular shell (22), a water annular cavity (214) is formed between the first annular shell (21) and the second annular shell (22), a water inlet hole (2211) communicated with the water annular cavity (214) is formed in the second annular shell (22), and the water circulating mechanism (4) supplies water to the water annular cavity (214) through a water inlet hole (2211), the first annular shell (21) is provided with a plurality of drainage holes (2131) communicated with the water annular cavity (214), the water annular cavity (214) is communicated with the atomizing cavity (124) through the drainage holes (2131), and the driving piece (23) is connected with the first annular shell (21) and used for driving the first annular shell (21) to rotate.
2. The venturi wet scrubbing apparatus of claim 1, wherein: the driving piece (23) comprises a plurality of spinning disks (231), the spinning disks (231) are located in the atomizing cavity (124), the spinning disks (231) are fixedly connected with the first ring shell (21), and the spinning disks (231) are arranged along the circumferential direction of the first ring shell (21).
3. The venturi wet scrubbing apparatus of claim 2, wherein: the first ring shell (21) comprises a first ring plate (211), a first ring (212) and a second ring (213), the second ring shell (22) comprises a second ring plate (221), the first ring plate (211) is rotatably connected with one end, close to the rear throat pipe (123), of the front throat pipe (121), the first ring (212) and the second ring (213) are fixed on one face, far away from the front throat pipe (121), of the first ring plate (211), the first ring (212) and the second ring (213) are coaxial, and the second ring (213) is located on the inner side of the first ring (212); the second ring plate (221) is fixed at one end, close to the front throat pipe (121), of the rear throat pipe (123), one ends, far away from the first ring plate (211), of the first ring plate (212) and the second ring plate (213) are abutted to the second ring plate (221), the water inlet hole (2211) is formed in the second ring plate (221), the plurality of water drain holes (2131) are formed in the second ring plate (213), and the water ring cavity (214) is located between the first ring plate (212) and the second ring plate (213).
4. A venturi wet scrubbing apparatus as set forth in claim 3, wherein: preceding choke (121) keep away from one end of reducer (11) and be fixed with connection pad (122), one side fixedly connected with connecting ring strip (2111) that first crown plate (211) is close to connection pad (122), connecting ring strip (2111) and first crown plate (211) coaxial line, offer on connection pad (122) and supply connecting ring strip (2111) gliding connection ring groove (1221), connecting ring strip (2111) is located connection ring groove (1221).
5. A venturi wet scrubbing apparatus as set forth in claim 3, wherein: the second ring shell (22) further comprises an outer sleeve ring (223), the outer sleeve ring (223) is fixed on one surface, away from the rear throat pipe (123), of the second ring plate (221), the outer sleeve ring (223) and the first sleeve ring (212) are coaxial, and a plurality of sealing pieces (224) are arranged between the first sleeve ring (212) and the outer sleeve ring (223).
6. A venturi wet scrubbing apparatus as set forth in claim 3, wherein: a plurality of flow dividing strips (222) are fixed on the second annular plate (221), the flow dividing strips (222) are arranged along the circumferential direction of the second annular plate (221), and the flow dividing strips (222) are located on one side, far away from the first sleeve ring (212), of the second sleeve ring (213).
7. The venturi wet scrubbing apparatus of claim 1, wherein: drop catcher (3) include casing (31) and set up washing mechanism (32) in casing (31), washing mechanism (32) are including washing pipe (321) and a plurality of atomizing nozzle (322), washing pipe (321) set up in casing (31), casing (31) and being connected with circulation water supply mechanism (4) are worn out to the one end of washing pipe (321), atomizing nozzle (322) are connected with washing pipe (321), atomizing nozzle (322) are arranged along the length direction of washing pipe (321).
8. The venturi wet scrubbing apparatus of claim 7, wherein: the washing machine is characterized in that a catching and dripping inlet (311) is formed in the shell (31), the Venturi tube (1) is communicated with the shell (31) through the catching and dripping inlet (311), the washing mechanism (32) further comprises a plurality of rotating blades (323), the washing pipe (321) is rotatably connected with the shell (31), the rotating blades (323) are located in the shell (31), the rotating blades (323) are fixedly connected with the washing pipe (321), the rotating blades (323) are arranged along the circumferential direction of the washing pipe (321), and the rotating blades (323) are abutted to the bottom surface of the inner cavity of the shell (31).
9. The venturi wet scrubbing apparatus of claim 7, wherein: the circulating water supply mechanism (4) comprises a sedimentation tank (41), a water supply tank (42) and a circulating pump (43), a sewage draining outlet (313) is arranged at the bottom of the shell (31), the shell (31) is connected with a sewage draining pipe (44) through the sewage draining outlet (313), one end of the sewage discharge pipe (44) far away from the sewage discharge port (313) is communicated with the sedimentation tank (41), a water supply pipe (45) is communicated between the sedimentation tank (41) and the water supply tank (42), a water supply pipe (46) is connected to the water supply tank (42), the circulation pump (43) is arranged on the water supply pipe (46), one end of the water supply pipe (46) far away from the water supply tank (42) is connected with a washing inlet pipe (48) and a water spraying inlet pipe (47), one end of the water spray inlet pipe (47) far away from the water supply pipe (46) is communicated with a water inlet hole (2211) of the first annular shell (21), one end of the washing inlet pipe (48) far away from the water supply pipe (46) is communicated with the washing pipe (321).
10. The venturi wet scrubbing apparatus of claim 7, wherein: an air outlet (312) is formed in the top of the shell (31), and a demister (314) is mounted on the shell (31) close to the air outlet (312).
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| CN202111445181.5A CN114146522B (en) | 2021-11-30 | 2021-11-30 | Venturi wet dust removal device |
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| CN202111445181.5A CN114146522B (en) | 2021-11-30 | 2021-11-30 | Venturi wet dust removal device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193206A (en) * | 2022-09-19 | 2022-10-18 | 航天氢能沧州气体有限公司 | Venturi washing device for synthesis gas production |
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| CN114146522B (en) | 2023-02-03 |
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