CN107930332B - Device and method for strengthening removal of ultrafine particles in coal-fired boiler - Google Patents
Device and method for strengthening removal of ultrafine particles in coal-fired boiler Download PDFInfo
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- CN107930332B CN107930332B CN201711417099.5A CN201711417099A CN107930332B CN 107930332 B CN107930332 B CN 107930332B CN 201711417099 A CN201711417099 A CN 201711417099A CN 107930332 B CN107930332 B CN 107930332B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention relates to a device and a method for removing ultrafine particles in a reinforced coal-fired boiler, wherein the device is a cuboid as a whole, two angular inner grooves are symmetrically arranged in the middle of the cuboid up and down, one end of the device is a flue gas inlet, and the other end of the device is a flue gas outlet; a V-shaped turbulence piece is arranged on the axis of the device in front of the flue gas inlet and the angular inner grooves, the sharp corner of the V-shaped turbulence piece faces the flue gas inlet, and a [ V-shaped turbulence piece ] is arranged on the axis of the device behind the lowest point of the angular inner grooves. The device sets up symmetrical angular form inside groove through the upper and lower wall at the device to install the vortex piece of different shapes additional in the device, through angular form inside groove and vortex piece interact, produce the swirl in the device, make the better coalescence of granule, promote the granule to grow up. The invention has the advantages of convenient operation, simple manufacturing process, low operation cost and the like.
Description
Technical Field
The invention belongs to the technical field of removing ultrafine particles in flue gas, and particularly relates to a device and a method for strengthening removal of ultrafine particles in a coal-fired boiler, which are suitable for removing fine particles in coal-fired flue gas in an industrial boiler.
Background
In recent years, the atmospheric environment is increasingly deteriorated due to the influence of various aspects such as industrial production and life, especially to the PM in the air in autumn and winter 2.5 The content is gradually increased, so that the haze weather is more and more serious. China is an industrial big country, coal-fired boilers are widely used in industrial production, smoke of the coal-fired boilers contains a large amount of ultrafine particles, and traditional dust collectors such as electrostatic dust collectors and bag dust collectors have poor removal effects on ultrafine particles (the equivalent diameter of the particles is less than 1 micron) in the smoke of the coal-fired boilers, so that a large amount of ultrafine particles are discharged into the air to pollute the atmospheric environment. Therefore, a pretreatment stage is arranged before the flue gas enters the dust remover, so that the ultrafine particles in the coal-fired flue gas pass through the physical or physical mode in the pretreatment stageThe chemical action makes the superfine particles agglomerate into particles with larger diameter, and then the particles are removed by a traditional dust remover. Therefore, the removal efficiency of the dust remover can be increased, and the number density of the ultrafine particles in the environment is greatly reduced.
Particle agglomeration techniques can be classified into acoustic wave agglomeration, electromagnetic agglomeration, charge agglomeration, turbulent agglomeration, chemical agglomeration, vapor phase change, and the like. At present, turbulent agglomeration is favored by many people and is most widely used in engineering because the operation is simple, the cost in the using process is low, and the process operation can be realized on the basis of not changing the existing equipment. Turbulent agglomeration is a process in which particles in a flow field collide and are agglomerated into larger particles due to the fact that the velocity of the particles changes caused by disturbance of the flow field, so that the particles in the flow field are locally enriched or the radial velocity of the particles is not uniform.
Liu Hanxiao (Liu Hanxiao. Coal burning superfine particle vortex coalescence numerical simulation [ D ]. North China university of electric Power.2011) provides a coalescence device which is a cuboid and is internally provided with a triangular prism, a large vortex sheet, a baffle plate consisting of two flat plates and a small vortex sheet. The big vortex sheet is arranged at the front end of the collector, the small vortex sheet is additionally arranged at a distance from the big vortex sheet, each row is provided with two big vortex sheets and six small vortex sheets, three rows of big vortex sheets and six small vortex sheets are arranged in the same way, and each row is separated from each row by a baffle. After numerical simulation, the collector has a good vortex generating effect, but the number of the large and small vortex sheets in the collector is large, so that the flow resistance of the fluid is increased, and the baffle plates are arranged, so that the complexity of the manufacturing process is increased, and the resistance in the collector is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a device and a method for strengthening removal of ultrafine particles in a coal-fired boiler. The device sets up symmetrical angular form inside groove through the upper and lower wall at the device to install the vortex piece of different shapes additional in the device, through angular form inside groove and vortex piece interact, produce the swirl in the device, make the better coalescence of granule, promote the granule to grow up. The invention has the advantages of convenient operation, simple manufacturing process, low operation cost and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a device for strengthening removal of ultrafine particles in a coal-fired boiler is a cuboid in general and is characterized in that two angular inner grooves are symmetrically arranged in the middle of the cuboid up and down, one end of the device is a flue gas inlet, and the other end of the device is a flue gas outlet; a V-shaped turbulence element is arranged on the axis of the device in front of the smoke inlet and the angular inner grooves, the sharp corner of the V-shaped turbulence element faces the smoke inlet, a [ shaped turbulence element is arranged on the axis of the device behind the lowest point of the angular inner grooves, the [ shaped turbulence element is of a structure symmetrical about the axis of the device, the sealing end of the [ shaped turbulence element faces the smoke inlet, a plurality of rectangular turbulence elements are arranged between the [ shaped turbulence element and the smoke outlet, the two rectangular turbulence elements are in one group and symmetrical about the axis of the device, and the inclined edges of the [ shaped turbulence elements and the included angles of the rectangular turbulence elements and the axis of the device are equal; the smoke outlet is a tapered outlet and is connected with an electrostatic dust collector; the distance from the vertex of the V-shaped turbulence piece to the smoke inlet is 2/15 of the total length of the device; the distance between the vertex of the angular inner groove and the flue gas inlet is 13/30 of the total length of the device; the distance from the sealing end of the [ shaped ] spoiler to the smoke inlet is 17/30 of the total length of the device; the distance from the tail end of the last group of rectangular spoilers to the smoke outlet is 6/30 of the total length of the device; the shortest distance between the two rectangular spoiler of the first set is larger than the largest distance between the two hypotenuses of the "[ shaped spoiler.
A method for strengthening removal of ultrafine particles in a coal-fired boiler uses the device, and comprises the following specific steps:
1) High-temperature flue gas flowing in enters an inlet of a combiner at the speed of 10m/s, the flue gas in the combiner firstly flows through a V-shaped turbulence piece to split the flue gas and reduce the speed of the flue gas, a larger speed gradient is generated behind the turbulence piece, two vortexes in opposite directions are formed behind the turbulence piece, and small particles collide with each other under the action of the vortexes to form larger particles;
2) The width of the device is narrowed firstly due to the arrangement of the angular inner grooves, so that the flow velocity of the flue gas is increased, and then the width of the device is increased, so that the flue gas has a larger velocity gradient at the stage, vortexes can be formed at the edges of the angular inner grooves, the impact among particles is increased, and the particles are agglomerated again;
3) The accelerated smoke flows through the [ shaped turbulence element, the sealing end of the [ shaped turbulence element plays a role in shunting, and the smoke can form vortex after the [ shaped turbulence element due to the action of resistance when flowing through the two bevel edges of the turbulence element, so that particles are further interacted and continuously grow; then the smoke gas flows through a plurality of rectangular turbulence pieces distributed in an expanding manner to be accelerated, and the particles grow up again after the rectangular turbulence pieces;
4) And (3) enabling the agglomerated particles to pass through a smoke reducing outlet, increasing the flow velocity again, fully mixing the agglomerated particles, then enabling the particles to flow out of the device, and then removing the particles through an electrostatic dust collector.
Compared with the prior art, the invention has the beneficial effects that:
(1) The device is symmetrically designed along the incoming flow direction of the flue gas, the V-shaped turbulence element is arranged at the flue gas inlet, the vertex angle is 60 degrees, the two side lengths are equal, thus when the incoming flue gas flows through the turbulence element, the effect of flow division can be achieved, two vortexes with opposite directions can be formed behind the V shape, the small particles move along with the vortexes, the mutual collision probability among the particles is increased, and the small particles are combined into larger particles.
(2) The upper wall surface and the lower wall surface of the device are provided with symmetrical angle-shaped inner grooves, and the design can increase the flow velocity of the flue gas. And when the smoke flows through the second side of the angular inner groove, the smoke can form vortex behind the symmetrical angular inner groove due to disturbance. The particles have strong interaction in the vortex, so that small particles which are not combined because of the shunting of the V-shaped turbulence piece can be further combined; the particles which are previously gathered in the vortex behind the V-shaped turbulence member can also be continuously enlarged and gathered into particles with larger particle size due to the vortex.
(3) The device of the invention is added with a V-shaped turbulence element and a [ shaped ] turbulence element and a pair of rectangular turbulence elements. The accelerated smoke firstly passes through the [ shaped turbulence element and forms two vortexes behind the [ shaped turbulence element after being shunted, and particles grow up further under the action of the vortexes. The particles after growing up flow through a pair of rectangle vortex pieces, and rectangle vortex piece and afterbody convergent export combine together, and the convergent export makes the fluid accelerate, later combines with the vortex piece, forms the swirl once more, makes the fluidic mid portion's of reposition of redundant personnel granule obtain the reunion chance of great probability in the swirl.
(4) According to the method, the flue gas flow velocity of 10m/s is selected, and the flue gas flows through the V-shaped turbulence element at the flue gas flow velocity, so that a vortex is formed behind the element. Because the distance between the V-shaped element and the flue gas inlet and the distance between the V-shaped element and the angular inner grooves are proper, the flow dividing function is achieved, and vortexes generated by the turbulence piece can be prevented from being damaged by the angular inner grooves. The first side of the angular inner groove increases the flow velocity of the flue gas, and if the V-shaped element is too close to the angular inner groove, the vortex is destroyed due to the increase of the flow velocity, and the agglomeration effect is influenced.
(5) The invention has better effect when ultrafine particles are aggregated and the particle size is more uniform, the pressure drop in the whole process is 423.24pa, and the total energy consumption is less. The device has novel appearance and has the effect of increasing the flow velocity of the flue gas and generating vortex. The turbulence element in the device has simple structure and low manufacturing cost, improves the agglomeration effect to a great extent, and has good development prospect.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an apparatus for enhancing removal of ultrafine particulate matter in a coal-fired boiler according to the present invention;
FIG. 2 is a velocity vector diagram of the apparatus for enhancing removal of ultrafine particulate matter in a coal-fired boiler according to embodiment 1 of the present invention;
FIG. 3 is a partial enlarged vector diagram of the "[ character ] shaped spoiler of FIG. 2;
FIG. 4 is a graph showing the distribution before and after agglomeration of the average particle size of the granules in example 1;
FIG. 5 is a graph of the percentage of exit average particle size distribution for example 1;
in FIG. 1: 1-a flue gas inlet; 2-angular inner grooves; 3-a flue gas outlet; 4- "V" shaped turbulence member; 5- "[ shape of the figure" spoiler; 6-rectangular spoiler.
Detailed Description
The present invention is described in detail below with reference to the embodiments and the drawings, but the present invention is not limited thereto.
The invention relates to a device for removing ultrafine particles in a reinforced coal-fired boiler (refer to a device for short, see figure 1), which is a cuboid as a whole, wherein two angular inner grooves 2 are symmetrically arranged in the middle of the cuboid up and down, one end of the device is a flue gas inlet 1, and the other end of the device is a flue gas outlet 3; a V-shaped turbulence element 4 is arranged on the axis of the device in front of the smoke inlet and the angular inner grooves, the sharp corner of the V-shaped turbulence element faces the smoke inlet, a [ shaped turbulence element 5 is arranged on the axis of the device behind the lowest point of the angular inner grooves, the [ shaped turbulence element is a structure symmetrical about the axis of the device, the sealing end of the [ shaped turbulence element faces the smoke inlet, a plurality of rectangular turbulence elements 6 are arranged between the [ shaped turbulence element and the smoke outlet, the two rectangular turbulence elements are in one group and symmetrical about the axis of the device, and the inclined edges of the [ shaped turbulence elements and the included angles of the rectangular turbulence elements and the axis of the device are equal; the flue gas outlet is a reducing outlet, and the flue gas outlet is connected with an electrostatic dust collector.
The invention is further characterized in that the distance from the vertex of the V-shaped turbulence piece to the flue gas inlet is 2/15 of the total length of the device; the distance between the vertex of the angular inner groove and the flue gas inlet is 13/30 of the total length of the device; the distance from the sealing end of the [ shaped ] spoiler to the smoke inlet is 17/30 of the total length of the device; the distance from the tail end of the last group of rectangular spoilers to the smoke outlet is 6/30 of the total length of the device.
The opening angle of the V-shaped spoiler is 60 degrees. The opening angle is determined according to the flow velocity of the flue gas flowing in, and the fine particle agglomeration effect is better when the angle is 60 degrees under the flow velocity (10 m/s) of the flue gas. The sharp angle of the V-shaped turbulence piece faces the flue gas inlet, so that the flue gas can be shunted.
The vertex angle of the angular inner groove is 120 degrees. The angle-shaped inner groove is an isosceles triangle with the vertex angle of 120 degrees, the vertex angle faces the inside of the device, the angle of the angle-shaped inner groove can be adjusted according to the flow velocity of the incoming flue gas, the vertex angle of 120 degrees is preferred, and the fine particle agglomeration effect is best.
The [ shape ] spoiler is overall isosceles trapezoid, the sealing end of the [ shape ] spoiler is the upper bottom of the isosceles trapezoid facing the smoke inlet, the isosceles trapezoid has no lower bottom, and the base angle of the isosceles trapezoid is preferably 60 degrees. The difference in parameter selection can have an effect on the agglomeration effect of the fine particulate matter.
Every two of the rectangular spoilers are in one group, the two rectangular spoilers in each group are symmetrically arranged along the axis of the device, the distance between every two adjacent groups is equal, the plane where each rectangular spoiler is located is parallel to the plane where the hypotenuse of the 'font spoiler is located, and the shortest distance between the two rectangular spoilers in the first group is greater than the largest distance between the two hypotenuses of the' font spoiler.
The key points of the design of the device of the invention are the angular inner grooves, the V-shaped turbulence pieces, the shapes and the sizes of the [ shaped turbulence pieces and the rectangular turbulence pieces and the relative positions of the arrangement of all the parts, and the optimal result can be obtained by adjusting the parameters. The first side of the angular inner groove can increase the flow rate of the flue gas, and eddies are formed behind the second side, so that the collision probability of particles is increased. Three different turbulence elements are arranged in the device, and the turbulence elements can respectively agglomerate particles with different particle sizes at different positions, so that small particles can be further grown into particles with larger particle sizes.
In the present invention, the number of "V" shaped spoiler is one, the number of "[ shape spoiler is one, the number of rectangular spoiler is many pairs, specifically determined according to the size of vortex formed by the incoming flow velocity of smoke behind" [ shape element, the number of rectangular element 6 is preferably one pair. The V-shaped turbulence piece can not only shunt smoke, but also form vortex behind the turbulence element, so that the vortex is not damaged. The [ shape ] turbulence piece 5 not only plays a role in shunting, but also forms vortex agglomeration small particles under the condition of not damaging the vortex generated after the smoke flows through the angular inner groove.
The method for strengthening the removal of the ultrafine particles in the coal-fired boiler comprises the following steps:
1) High-temperature flue gas of incoming flow enters an inlet of the combiner at the speed of 10m/s, the flue gas in the combiner firstly flows through the V-shaped turbulence piece, the flue gas is shunted, the speed of the flue gas is reduced, a larger speed gradient is generated behind the turbulence piece, two vortexes in opposite directions are formed behind the turbulence piece, and small particles mutually collide under the action of the vortexes to form larger particles.
2) The flue gas flowing through the V-shaped turbulence piece is gradually narrowed in the area width of the first side of the angular inner groove due to the angular inner grooves on the upper wall surface and the lower wall surface of the device, so that the flow velocity of the flue gas is increased, and then the area width of the second side of the angular inner groove of the device is gradually increased, so that the flue gas has a larger velocity gradient in the area, a vortex is formed at the edge of the angular inner groove, the impact among particles is increased, and the particles are agglomerated again.
3) The flue gas after accelerating flows through "[ shape vortex piece," [ shape vortex piece seals the terminal surface and plays the effect of reposition of redundant personnel, can form the swirl after "[ shape vortex piece because of the effect of vortex when two hypotenuses of this vortex piece are flowed through to the flue gas, further makes granule interact, lasts to grow up. The flue gas flows through the rectangular turbulent flow piece again to undergo the acceleration process, and the particles grow up again behind the fins.
4) The agglomerated particles pass through a smoke scaling outlet, the flow speed is increased again, the agglomerated particles are fully mixed and then flow out of the agglomerator, and the agglomerator is connected with an electrostatic dust collector for removal.
After the particles with the particle size of less than 0.5 micron are agglomerated by the method, the particle size of most particles is between 2.4 and 3.8 microns. The flue gas flows out of the coalescence device and then is connected with the electrostatic dust collector, and the dust collection effect is better after the next step of removal.
Example 1
The device for removing ultrafine particles in the reinforced coal-fired boiler is integrally a cuboid, one end of the device is provided with a flue gas inlet 1, the other end of the device is provided with a flue gas outlet 3, the flue gas inlet is connected behind a desulfurizing tower, and the flue gas outlet is connected with an electrostatic dust collector; a V-shaped turbulence element 4 is arranged behind the flue gas inlet, and the sharp angle of the turbulence element 4 faces the flue gas inlet; two angular inner grooves 2 are symmetrically arranged on the upper wall surface and the lower wall surface of the device behind the V-shaped turbulence piece, and the vertex angle of each angular inner groove 2 is 120 degrees; the smoke passes through the channels of the angular inner grooves and then passes through the [ shaped turbulence elements 5, the [ shaped turbulence elements are arranged on the axis of the device, and the sealing end faces of the [ shaped turbulence elements are vertical to the incoming flow direction of the smoke; after the smoke flows through the 'shaped' spoiler, the smoke passes through the pair of rectangular spoilers 6, the two rectangular spoilers are symmetrically distributed on two sides of the axis of the device, the rectangular spoilers and the smoke flow direction form 30 degrees, and the shortest distance between the two rectangular spoilers is greater than the largest distance between two oblique edges of the 'shaped' spoiler.
In the embodiment, the flue gas is generated by a full-automatic coal-fired boiler, and the flue gas volume is 70Nm 3 And h, enabling the desulfurized flue gas to enter a flue gas inlet 1 through a dredging pipe, wherein the flow speed of the flue gas is 10m/s. The whole condenser is of a cuboid structure, the length is 1520mm, the width is 500mm, and the height is 300m. The distance from the vertex of the V-shaped turbulence piece to the smoke inlet is 2/15 of the total length of the device; the distance between the vertex of the angular inner groove and the flue gas inlet is 13/30 of the total length of the device; the distance from the sealing end of the [ shape ] spoiler to the smoke inlet is 17/30 of the total length of the device; the distance from the tail end of the last group of rectangular spoilers to the smoke outlet is 6/30 of the total length of the device.
Fig. 2 is a velocity vector diagram of the present embodiment. As can be seen from the vector diagram, when the smoke flows through the V-shaped turbulence piece, two vortexes with opposite directions are formed behind the V-shaped turbulence piece; after flowing through the angular inner grooves, vortexes are formed behind the angular inner grooves; then flows through the baffle piece in the shape of a Chinese character 'ji', two vortexes are formed behind the baffle piece, and after the two vortexes flow through the pair of rectangular baffle pieces, vortexes are formed behind the rectangular baffle pieces, which can be seen from figure 3; under the effect of swirl, fine particles in the flue gas have increased the collision probability, have improved the reunion effect.
FIG. 4 is a distribution diagram before and after agglomeration of the average particle size of the particulate matter in the flue gas. As can be seen from fig. 4, the average particle size of the particles before agglomeration was below 0.5 μm, the particle size was small. After agglomeration, compared with the particles before agglomeration, the average particle size of the particles is between 2.4 and 3.8 microns, the removal efficiency can reach 96 percent, and the particles with the particle size in the range can be removed better by subsequent dust removal equipment. The particle growth is obvious after the device is agglomerated, and the agglomeration effect of the device is better.
Fig. 5 is a distribution diagram of the percentage of the average particle size at the flue gas outlet after agglomeration in the apparatus of this embodiment, and it can be seen from the diagram that the particle size at the flue gas outlet is 2.4-3.8 μm, in which the particle size of 3.0 μm accounts for more than 95%, which indicates that the particle size of the agglomerated particles in the apparatus of this embodiment is larger and can be removed more easily by the subsequent process.
Nothing in this specification is said to apply to the prior art.
Claims (5)
1. A device for strengthening removal of ultrafine particles in a coal-fired boiler is a cuboid in general, and is characterized in that two angular inner grooves are symmetrically arranged in the middle of the cuboid up and down, one end of the device is a flue gas inlet, and the other end of the device is a flue gas outlet; a V-shaped turbulence element is arranged on the axis of the device in front of the smoke inlet and the angular inner grooves, the sharp corner of the V-shaped turbulence element faces the smoke inlet, a [ shaped turbulence element is arranged on the axis of the device behind the lowest point of the angular inner grooves, the [ shaped turbulence element is of a structure symmetrical about the axis of the device, the sealing end of the [ shaped turbulence element faces the smoke inlet, a plurality of rectangular turbulence elements are arranged between the [ shaped turbulence element and the smoke outlet, the two rectangular turbulence elements are in one group, the two rectangular turbulence elements in the one group are symmetrical about the axis of the device, and the inclined edges of the [ shaped turbulence elements and the included angles between the rectangular turbulence elements and the axis of the device are equal; the smoke outlet is a gradually-reduced outlet and is connected with the electrostatic dust collector; the distance from the vertex of the V-shaped turbulence piece to the flue gas inlet is 2/15 of the total length of the device; the distance between the vertex of the angular inner groove and the flue gas inlet is 13/30 of the total length of the device; the distance from the sealing end of the [ shaped ] spoiler to the smoke inlet is 17/30 of the total length of the device; the distance from the tail end of the last group of rectangular turbulence pieces to the smoke outlet is 6/30 of the total length of the device; the shortest distance between the two rectangular spoilers of the first set is larger than the largest distance between the two hypotenuses of the "[ shaped spoiler.
2. The apparatus for enhancing removal of ultrafine particles in a coal-fired boiler as in claim 1, wherein the opening angle of the "V" -shaped flow disturbing member is 60 °.
3. The apparatus for enhanced removal of ultrafine particles from coal-fired boiler as in claim 1, wherein the apex angle of said angular inner tank is 120 °.
4. The apparatus for enhancing removal of ultrafine particles in a coal-fired boiler as in claim 1, wherein the number of rectangular turbulators is two.
5. A method for strengthening the removal of ultrafine particles in a coal-fired boiler, which uses the device of any one of claims 1 to 4, wherein the device is a coalescer, and the method comprises the following specific steps:
1) High-temperature flue gas flowing in enters an inlet of a combiner at the speed of 10m/s, the flue gas in the combiner firstly flows through a V-shaped turbulence piece to split the flue gas and reduce the speed of the flue gas, a larger speed gradient is generated behind the turbulence piece, two vortexes in opposite directions are formed behind the turbulence piece, and small particles collide with each other under the action of the vortexes to form larger particles;
2) The flue gas flowing through the V-shaped turbulence piece is narrowed firstly due to the arrangement of the angular inner grooves, so that the flow velocity of the flue gas is increased, and then the width of the device is increased, so that the flue gas has a larger velocity gradient at the stage, vortexes can be formed at the edges of the angular inner grooves, the impact among particles is increased, and the particles are agglomerated again;
3) The accelerated smoke flows through the [ shaped turbulence element, the sealing end of the [ shaped turbulence element plays a role in shunting, and the smoke can form vortex after the [ shaped turbulence element due to the action of resistance when flowing through the two bevel edges of the turbulence element, so that particles are further interacted and continuously grow; then the flue gas flows through a plurality of rectangular turbulence pieces which are distributed in an expanding way to accelerate, and the particles grow up again after the rectangular turbulence pieces;
4) And (3) enabling the agglomerated particles to pass through a smoke reducing outlet, increasing the flow velocity again, fully mixing the agglomerated particles, then enabling the particles to flow out of the device, and then removing the particles through an electrostatic dust collector.
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| CN105854500B (en) * | 2016-04-28 | 2018-02-13 | 河北工业大学 | Turbulent flow reunion room and the method for application reunion room removing superfine particulate matter |
| CN105749690B (en) * | 2016-04-28 | 2017-12-15 | 河北工业大学 | Promote the device and method that fine particle interacts in fire coal boiler fume |
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