CN107088344B - Device and method for agglomerating fine particles through tangential rotational flow atomization and sound wave action - Google Patents

Device and method for agglomerating fine particles through tangential rotational flow atomization and sound wave action Download PDF

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CN107088344B
CN107088344B CN201710377783.9A CN201710377783A CN107088344B CN 107088344 B CN107088344 B CN 107088344B CN 201710377783 A CN201710377783 A CN 201710377783A CN 107088344 B CN107088344 B CN 107088344B
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condensation
flue gas
fine particles
cyclone
double
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CN107088344A (en
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刘定平
罗伟乐
黄俊钦
周俊
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Guangdong Essen Environmental Protection Technology Co ltd
South China University of Technology SCUT
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Guangdong Essen Environmental Protection Technology Co ltd
South China University of Technology SCUT
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/40Combinations of devices covered by groups B01D45/00 and B01D47/00

Abstract

The invention discloses a device and a method for atomizing tangential rotational flow and condensing fine particles under the action of sound waves; comprises a double-layer cylinder body; the condensation turbolator is distributed along the inner wall surface of the double-layer cylinder in an array manner; the condensation turbolator is distributed on the inner wall surface of the double-layer cylinder body in an array manner to form a cyclone condensation area; a plurality of cyclone atomization acoustic turbulators are arranged on the inner wall surface of the smoke inlet end of the double-layer cylinder in an array and tangential mode; a high-pressure swirl area is formed in the cross section area surrounded by the swirl atomizing acoustic turbulators; the dust-containing waste heat flue gas enters a high-pressure cyclone area from a flue gas inlet, moves and mutually impacts with wet saturated steam generated by a cyclone atomization sound wave turbulator along a tangential direction under the action of sound waves, spirally moves forwards in a tangential mode, enters a cyclone condensation area, and forms vortex after colliding with a condensation turbulator; and the condensation and separation of the dust-containing waste heat flue gas fine particles are realized under the mutual coupling action of sound waves, phase change and turbulence.

Description

Device and method for agglomerating fine particles through tangential rotational flow atomization and sound wave action
Technical Field
The invention relates to the technical field of gas-solid fine particle removal, in particular to a device and a method for atomizing tangential rotational flow and condensing fine particles under the action of sound waves.
Background
The fine particles contained in the exhaust gases emitted from industry and vehicles have severely affected human health and polluted atmospheric environment. The fine particles directly or indirectly carry toxic and harmful substances, and once entering into internal tissues of a human body, the fine particles cause serious harm to physical and psychological health of the human body; meanwhile, the fine particles can stay in the atmosphere for a long time and are conveyed in a long distance, and suspended in the atmosphere, so that the visibility of cities and scenic spots is reduced, and haze is generated. Removal of fine particles from the flue gas is therefore extremely important.
The particle size distribution of the particles discharged after combustion of coal and heavy oil is mainly concentrated between a few nanometers and a few micrometers. However, the conventional dust remover has low removal efficiency for ultrafine particles, particularly particles with a particle size of 0.1-2 μm, and the conventional dust remover can be used for removing the ultrafine particles with high efficiency by arranging a pretreatment facility and solidifying and growing the fine particles into large particles by a physical or chemical method.
The adoption of a single condensation technology to promote the growth of fine particles to reach the particle size range of the high-efficiency removal of the conventional dust remover has certain difficulty, and the energy consumption is high and the condensation time is long. Therefore, it is necessary to develop a composite coagulation device based on multiple coagulation mechanisms, and to combine multiple coagulation technologies to promote rapid coagulation and growth of fine particles.
Experiments and simulated researches at home and abroad prove that the sound wave coagulation technology can effectively promote the coagulation of fine particles, the effect of combining seed particles with larger particle sizes is better, but high sound wave intensity is required for obtaining better coagulation effect, and researches show that when the sound pressure level reaches more than 158dB, the fine particles can be obviously coagulated, the high sound wave intensity needs high energy consumption at the cost, and simultaneously, the generated noise hazard needs to be eliminated. The phase-change condensation is to utilize supersaturated steam to generate phase-change condensation on the surfaces of the fine particles so as to increase the granularity of the fine particles, but the condensation effect of the supersaturated steam on the surfaces of the fine particles is singly utilized, so that the particle size is increased to a certain degree that the particle size range of the effective removal of the high-efficiency demister is more than 3 mu m to 5 mu m, and the steam consumption required by realizing high supersaturation becomes a difficult point of the technology; turbulent flow coagulation technology is simple and efficient, has been widely applied to control of emission of fine particles, but the promotion of fine particle growth by turbulent flow coagulation technology causes larger pressure drop of a system and large energy consumption; the method for singly strengthening the collision of the fine particles and singly increasing the humidity of the flue gas has obvious defects.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provide a device and a method for combining tangential rotational flow atomization and acoustic wave action to form fine particles.
The invention is realized by the following technical scheme:
a tangential rotational flow atomization and sound wave action fine particulate matter condensation device comprises the following components:
a double-layer cylinder 6; the front end and the rear end of the double-layer cylinder 6 are respectively provided with a smoke inlet 1 and a smoke outlet 9;
the condensation turbolator 5 is distributed along the inner wall surface of the double-layer cylinder 6 in an array manner; the condensation turbolator 5 distributed on the inner wall surface of the double-layer cylinder 6 in an array manner forms a cyclone condensation zone 4;
a plurality of swirl atomization acoustic wave turbulators 2 are arranged on the inner wall surface of the smoke inlet 1 end of the double-layer cylinder 6 in an array and tangential mode; the cross section area surrounded by the cyclone atomization acoustic turbulator 2 forms a high-pressure cyclone area 3; the swirl atomizing acoustic turbulator 2 is sprayed with high-pressure jet; the flue gas containing dust and waste heat enters a high-pressure cyclone region 3 to heat high-pressure jet flow;
when the dust-containing waste heat flue gas enters the high-pressure cyclone area 3 from the flue gas inlet 1, the dust-containing waste heat flue gas moves along the tangential direction under the action of sound waves and collides with wet saturated steam generated by the cyclone atomization sound wave turbulator 2, and spirally moves forwards in a tangential manner to enter the cyclone condensation area 4, and forms vortex after colliding with the condensation turbulator 5; and the condensation and separation of the dust-containing waste heat flue gas fine particles are realized under the mutual coupling action of sound waves, phase change and turbulence.
The inner cylinder of the double-layer cylinder 6 is formed by an array of sieve holes 10 which are distributed in a penetrating way; a collector 7 is arranged below the double-layer cylinder 6;
particles in dust-containing waste heat flue gas carried by wet saturated steam form vortex after colliding with the condensation turbolator 5, and under the mutual coupling action of sound waves, phase change and turbulence, part of the condensed and separated fine particles in the dust-containing waste heat flue gas enter the collector 7 through the sieve pores 10 and are discharged through the discharge port 8 at the bottom of the collector 7; the remaining coagulated fine particles are discharged from the flue gas outlet 9 and subjected to subsequent treatment.
The cross-sectional areas of the flue gas inlet 1 and the flue gas outlet 9 are smaller than the cross-sectional area of the double-layer cylinder 6;
the flue gas inlet 1 and the flue gas outlet 9 are connected with the double-layer cylinder 6 in a tapered transition way.
A method for agglomerating fine particles by tangential rotational flow atomization and acoustic wave action, which comprises the following steps:
step one: in the process that the high-pressure jet flows through the rotational flow atomization acoustic wave turbulator 2, wet saturated steam is generated under the actions of throttling, depressurization and cooling of the rotational flow atomization acoustic wave turbulator 2;
step two: in the process that the high-pressure jet flows through the rotational flow atomization acoustic wave turbulator 2, the rotational flow atomization acoustic wave turbulator 2 generates acoustic waves with the frequency range of 1-10kHz and the sound pressure level range of 130-158dB, and the generated acoustic waves enter a fine particle condensing device along with wet saturated steam;
step three: when the flue gas containing dust and waste heat flows through the flue gas inlet 1 and enters the high-pressure cyclone region 3 to meet the wet saturated steam sprayed by the cyclone atomization acoustic turbulator 2, the effect of mutual collision and mixing along the tangential direction is generated, the collision flow strengthens the mixing and condensation between fine particles and the wet saturated steam, and then the flue gas is emitted to the cyclone condensation region 4 from the center of the high-pressure cyclone region 3 and enters the cyclone condensation region 4;
the wet saturated steam which rotates in the cyclone condensation zone 4 moves forward in a rapid spiral manner, and is mutually entrained and mixed with the wet saturated steam in the spiral forward movement process, so that the fine particles in the dust-containing waste heat flue gas continue to move forward in the spiral manner towards the cyclone condensation zone 4 due to the action of centrifugal force, meanwhile, vortex is generated under the action of vortex of the condensation vortex piece 5, and condensation and separation of fine particles carried in the dust-containing waste heat flue gas are realized under the mutual coupling action of sound waves, phase change and turbulence.
Coagulation and separation means: a part of the condensed and separated fine particles enter the collector 7 through the sieve holes 10 and are discharged through the discharge port 8 at the bottom of the collector 7; the remaining coagulated fine particles are discharged from the flue gas outlet 9 and subjected to subsequent treatment.
Compared with the prior art, the invention has the following advantages and effects:
1. the impinging stream and the phase change coagulation are mutually promoted, so that the energy consumption is low and the coagulation efficiency is high. The dust-containing flue gas collides with wet saturated steam generated by the cyclone atomization acoustic turbulator 2 in the high-pressure cyclone region 3, the collision flow strengthens the mixing and condensation between fine particles and the wet saturated steam, the steam in the wet saturated steam is quickly condensed on the surfaces of the fine particles, the fine particles with water films condensed on the surfaces further collide and condense and grow in the collision process, and the two functions are mutually promoted.
2. The sonic coagulation and the phase change coagulation are mutually promoted, so that the energy consumption is further reduced, and the coagulation efficiency is further improved. When the high-pressure jet flow passes through the rotational flow atomization acoustic wave turbulator 2 at a high speed, acoustic waves generated by the rotational flow atomization acoustic wave turbulator 2 enter a condensation device along with wet saturated steam, as the acoustic waves have a converging effect on the fine particles, the particle number concentration at the position of a wave node is high, a large number of condensable particle surfaces are provided, supersaturated steam is facilitated to be condensed and grown on the surfaces of the particles, the droplets after the supersaturated steam grow up and form wide particle size distribution with the fine particles in the flue gas, and the acoustic wave condensation among the fine particles is promoted, and the two effects are mutually promoted.
3. Phase-change coagulation and turbulent coagulation are mutually promoted, so that the energy consumption is continuously reduced, and the coagulation efficiency is continuously improved. Because the wet saturated steam is sprayed out along the tangential direction, the flue gas moves forward in a spiral flow condensation zone 4 along with the high-speed rotating wet saturated steam in a quick spiral manner, and the flue gas and the wet saturated steam are mutually sucked and mixed in the spiral forward movement process, fine particles in the flue gas are drawn close to the inner wall of the condensation device due to the action of centrifugal force, so that the area near the inner wall of the condensation device becomes a particle high concentration zone, a large number of condensable particle surfaces are provided by the high concentration spiral flow zone, the condensation and growth of supersaturated water vapor on the surfaces of the condensation and growth are facilitated, the fine particles with water films condensed on the surfaces after the condensation and growth serve as collecting cores, and the fine particles collided with the fine particles are easily adhered on the surfaces of the condensation and growth of the fine particles, and the two actions are mutually promoted.
4. A high concentration region of particles is generated in the region near the inner wall of the cyclone condensation region, so that the condensation effect of fine particles is enhanced. Because the wet saturated steam is sprayed out along the tangential direction, the flue gas moves forward in a spiral flow condensation zone 4 along with the wet saturated steam rotating at a high speed in a quick spiral way, and fine particles in the flue gas are gathered towards the inner wall of the condensation device due to the action of centrifugal force, so that a region near the inner wall of the spiral flow condensation zone becomes a high-concentration particle zone, the probability of condensation caused by collision among the fine particles is increased by the high-concentration spiral flow zone, and the condensation effect of the fine particles is enhanced.
5. The flue gas rapidly flows around the condensation turbolator 5, so that the turbulent condensation effect of the fine particles is enhanced. Because the wet saturated steam is sprayed out along the tangential direction, the flue gas moves forward in a spiral flow condensation zone 4 along with the wet saturated steam rotating at a high speed in a spiral flow manner, the trajectory of the flue gas moving in a spiral flow manner is far greater than the trajectory of the flue gas moving in a straight line manner, so that under the same air inlet condition, the speed of the flue gas moving in a spiral flow manner around the flow condensation turbolator 5 is far greater than the speed of the flue gas moving in a straight line manner, the greater the flow speed, the better the vortex generating effect is, and the higher the turbulence condensation efficiency is.
6. The vortex generated when the flue gas flows around the condensation turbolator 5 moves forwards spirally along the direction of the air flow, the turbulence intensity of the flow field is effectively improved, and the turbulence condensation effect of the fine particles is enhanced.
7. The inner cylinder body in the double-layer cylinder body 6 is uniformly provided with a plurality of sieve holes 10, the outer cylinder body is a closed stainless steel cylinder, fine particles after partial condensation and separation enter the outer cylinder body through the sieve holes 10, are collected by the collector 7 and are discharged through the discharge port 8, so that partial fine particles in the flue gas are removed, and the effect of preliminary purification of the flue gas is achieved.
8. The particle size of the micro turbulence liquid drops in the wet saturated steam generated by the cyclone atomization acoustic wave turbulator 2 is mainly 50-80 mu m, and the micro turbulence liquid drops with the particle size enter a condensing device, so that the condensing efficiency of micro particles can be further improved on the premise of no additional energy consumption.
9. The high-pressure jet flow generates sound waves with certain frequency and sound pressure level when passing through the cyclone atomization sound wave turbulator 2, and compared with the sound waves generated by an externally added sound source, the condensing device is simplified.
10. When the high-pressure jet flows through the cyclone atomization acoustic wave turbulator 2, wet saturated steam with certain pressure, temperature and dryness is generated due to the actions of throttling, cooling and depressurization, so that the energy consumption for directly producing the high-pressure high-temperature steam is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic layout view of a swirl atomizing acoustic turbulator 2 which is sprayed along the tangential direction on the circumferential surface of a high-pressure swirl zone 3.
Fig. 3 is a schematic flow-disturbing view of the condensation-turbulent flow 5 on the circumferential surface of the cyclone condensation zone 4.
Fig. 4 is a schematic diagram of the distribution of the inner cylinder in the double-layer cylinder 6, wherein a plurality of sieve holes 10 are uniformly distributed on the inner cylinder.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples
As shown in fig. 1 to 4. The invention discloses a tangential rotational flow atomization and sound wave action condensation fine particulate matter device, which comprises the following components:
a double-layer cylinder 6; the front end and the rear end of the double-layer cylinder 6 are respectively provided with a smoke inlet 1 and a smoke outlet 9;
the condensation turbolator 5 is distributed along the inner wall surface of the double-layer cylinder 6 in an array manner; the condensation turbolator 5 distributed on the inner wall surface of the double-layer cylinder 6 in an array manner forms a cyclone condensation zone 4;
a plurality of swirl atomization acoustic wave turbulators 2 are arranged on the inner wall surface of the smoke inlet 1 end of the double-layer cylinder 6 in an array and tangential mode; the cross section area surrounded by the cyclone atomization acoustic turbulator 2 forms a high-pressure cyclone area 3; the swirl atomizing acoustic turbulator 2 is sprayed with high-pressure jet; the flue gas containing dust and waste heat enters a high-pressure cyclone region 3 to heat high-pressure jet flow;
when the dust-containing waste heat flue gas enters the high-pressure cyclone area 3 from the flue gas inlet 1, the dust-containing waste heat flue gas moves along the tangential direction under the action of sound waves and collides with wet saturated steam generated by the cyclone atomization sound wave turbulator 2, and spirally moves forwards in a tangential manner to enter the cyclone condensation area 4, and forms vortex after colliding with the condensation turbulator 5; and the condensation and separation of the dust-containing waste heat flue gas fine particles are realized under the mutual coupling action of sound waves, phase change and turbulence.
The inner cylinder of the double-layer cylinder 6 is formed by an array of sieve holes 10 which are distributed in a penetrating way; a collector 7 is arranged below the double-layer cylinder 6;
particles in dust-containing waste heat flue gas carried by wet saturated steam form vortex after colliding with the condensation turbolator 5, and under the mutual coupling action of sound waves, phase change and turbulence, part of the condensed and separated fine particles enter the collector 7 through the sieve holes 10 and are discharged through the discharge port 8 at the bottom of the collector 7, so that part of fine particles in the flue gas are removed, and the effect of preliminary purification of the flue gas is achieved. The remaining coagulated fine particles are discharged from the flue gas outlet 9 and subjected to subsequent treatment.
The cross-sectional areas of the flue gas inlet 1 and the flue gas outlet 9 are smaller than the cross-sectional area of the double-layer cylinder 6;
the flue gas inlet 1 and the flue gas outlet 9 are connected with the double-layer cylinder 6 in a tapered transition way.
According to the invention, the vortex condensation zone 4 is circumferentially distributed with the multi-layer condensation turbulators 5, when the high-speed rotating wet saturated steam drives the flue gas to rapidly flow around the condensation turbulators 5 in a tangential manner, a series of vortex with different dimensions is generated along the spiral direction, the generated vortex spiral motion improves the turbulence intensity, and the turbulence condensation effect is enhanced; and because the airflow moves forwards in the cyclone condensation zone 4 in a spiral way, under the same condition, the movement trace greatly increases compared with the linear movement, the airflow bypass speed is greatly improved, and the turbulent condensation effect is enhanced by the improvement of the speed. The fine particles are condensed and separated under the action of impact and vortex.
As described above. The steam used for condensation on the surface of the fine particles is provided by wet saturated steam generated by the throttling, depressurization and cooling actions when the high-pressure jet flows pass through the cyclone atomization acoustic turbulator at high speed, so that the energy consumption for directly producing high-pressure high-temperature steam is reduced; meanwhile, the sound waves generated when the high-pressure jet flow impacts the cyclone atomization sound wave turbulator are used for condensing the fine particles, and compared with the sound waves generated by utilizing an external sound source, the fine particle condensing device is simplified. The wet saturated steam sprayed by the cyclone atomization acoustic wave turbulator is impacted with the dust-containing smoke gas phase, the impact flow is utilized to promote the mixing and the coagulation of the wet saturated steam and the fine particles, the condensation of the steam on the surfaces of the fine particles is effectively enhanced, and the further collision and growth of the fine particles with water films condensed on the surfaces are promoted.
Because the wet saturated steam is sprayed out along the tangential direction in a rotational flow manner, the flue gas and the wet saturated steam are mutually sucked and mixed and are spirally forwards along the inner circumferential direction of the rotational flow condensation area, fine particles in the flue gas are gathered towards the inner wall of the rotational flow condensation area due to the action of centrifugal force, a high-concentration particle area is formed near the inner wall of the rotational flow condensation area, the probability of condensation caused by collision among particles is increased by the high-concentration rotational flow area, and the condensation effect of the particles is enhanced.
According to the invention, under the condition that the axial flow velocity of the flue gas is unchanged or reduced, the circumferential speed is increased, the vortex flow is rapidly formed by surrounding the condensation turbolator in a spiral motion mode, a series of spiral motion vortex flows are generated behind the condensation turbolator, and the turbulence intensity is enhanced. The enhancement of the turbulence intensity and the improvement of the flow-around speed can strengthen the effect of turbulent coagulation.
The particle size of the micro turbulence liquid drops in the wet saturated steam generated by the cyclone atomization acoustic wave turbulator is mainly 50-80 mu m, and the micro turbulence liquid drops with the particle size enter the condensing device, so that the condensing efficiency of the micro particles can be further improved on the premise of no additional energy consumption.
The double-layer cylinder body is characterized in that an outer cylinder is a closed stainless steel cylinder, an inner cylinder is a stainless steel screen mesh and is composed of a plurality of screen holes distributed in an array mode. A gap is arranged between the outer cylinder and the inner cylinder. The fine particles after partial condensation and separation enter a collector through sieve holes to be collected and then are discharged from a discharge port, so that partial fine particles in the flue gas are removed, and the effect of primary purification of the flue gas is achieved.
The method for agglomerating the fine particles by tangential rotational flow atomization and acoustic wave action can be realized by the following steps:
step one: in the process that the high-pressure jet flows through the rotational flow atomization acoustic wave turbulator 2, wet saturated steam is generated under the actions of throttling, depressurization and cooling of the rotational flow atomization acoustic wave turbulator 2;
step two: in the process that the high-pressure jet flows through the rotational flow atomization acoustic wave turbulator 2, the rotational flow atomization acoustic wave turbulator 2 generates acoustic waves with the frequency range of 1-10kHz and the sound pressure level range of 130-158dB, and the generated acoustic waves enter a fine particle condensing device along with wet saturated steam;
step three: when the flue gas containing dust and waste heat flows through the flue gas inlet 1 and enters the high-pressure cyclone region 3 to meet the wet saturated steam sprayed by the cyclone atomization acoustic turbulator 2, the effect of mutual collision and mixing along the tangential direction is generated, the collision flow strengthens the mixing and condensation between fine particles and the wet saturated steam, and then the flue gas is emitted to the cyclone condensation region 4 from the center of the high-pressure cyclone region 3 and enters the cyclone condensation region 4;
the wet saturated steam which rotates in the cyclone condensation zone 4 moves forward in a rapid spiral manner, and is mutually entrained and mixed with the wet saturated steam in the spiral forward movement process, so that the fine particles in the dust-containing waste heat flue gas continue to move forward in the spiral manner towards the cyclone condensation zone 4 due to the action of centrifugal force, meanwhile, vortex is generated under the action of vortex of the condensation vortex piece 5, and condensation and separation of fine particles carried in the dust-containing waste heat flue gas are realized under the mutual coupling action of sound waves, phase change and turbulence.
Coagulation and separation means: a part of the condensed and separated fine particles enter the collector 7 through the sieve holes 10 and are discharged through the discharge port 8 at the bottom of the collector 7; the remaining coagulated fine particles are discharged from the flue gas outlet 9 and subjected to subsequent treatment. So as to remove part of fine particles in the flue gas and achieve the effect of primary purification of the flue gas.
The double-layer cylinder is suitable for not only cylindrical structures, but also rectangular or other cross-sectional shapes.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the invention should be made and equivalents should be construed as falling within the scope of the invention.

Claims (2)

1. A method for agglomerating fine particles based on tangential rotational flow atomization and acoustic wave action, which is characterized by comprising the following components:
a double-layer cylinder (6); the front end and the rear end of the double-layer cylinder body (6) are respectively provided with a smoke inlet (1) and a smoke outlet (9);
the condensation turbolator (5) is distributed along the inner wall surface array of the double-layer cylinder (6); the condensation turbulators (5) distributed on the inner wall surface of the double-layer cylinder (6) form a cyclone condensation area (4);
a plurality of swirl atomization acoustic turbulators (2) are arranged on the inner wall surface of the flue gas inlet (1) end of the double-layer cylinder (6) in an array and tangential mode; a high-pressure swirl area (3) is formed in the cross section area surrounded by the swirl atomizing acoustic turbulator (2); the swirl atomizing acoustic turbulator (2) is sprayed with high-pressure jet flow;
the inner cylinder of the double-layer cylinder body (6) is formed by an array of sieve holes (10) which are distributed in a penetrating way; a collector (7) is arranged below the double-layer cylinder (6); particles in dust-containing waste heat flue gas carried by wet saturated steam form vortex after colliding with a condensation turbolator (5), and under the mutual coupling action of sound waves, phase change and turbulence, part of the condensed and separated fine particles in the dust-containing waste heat flue gas enter a collector (7) through a sieve pore (10) and are discharged through a discharge port (8) at the bottom of the collector (7); discharging the residual coagulated fine particles from a flue gas outlet (9) for subsequent treatment;
the method for agglomerating fine particles by tangential rotational flow atomization and acoustic wave action comprises the following steps:
step one: in the process that the high-pressure jet flows through the rotational flow atomization acoustic wave turbulator (2), wet saturated steam is generated under the actions of throttling, depressurization and cooling of the rotational flow atomization acoustic wave turbulator (2);
step two: in the process that the high-pressure jet flows through the rotational flow atomization acoustic wave turbulator (2), the rotational flow atomization acoustic wave turbulator (2) generates acoustic waves with the frequency range of 1-10kHz and the sound pressure level range of 130-158 and dB, and the generated acoustic waves enter a fine particle condensing device along with wet saturated steam;
step three: when the flue gas containing dust and waste heat flows through a flue gas inlet (1) and enters a high-pressure cyclone region (3) to meet wet saturated steam sprayed by a cyclone atomization acoustic wave turbulator (2), the effect of mutual collision and mixing along a tangential direction is generated, the collision flow strengthens the mixing and coagulation between fine particles and the wet saturated steam, and then the mixture is emitted to a cyclone coagulation region (4) from the center of the high-pressure cyclone region (3) to enter the cyclone coagulation region (4);
the wet saturated steam which follows rotation in the cyclone condensation area (4) moves forwards in a rapid spiral manner, and is mutually entrained and mixed with the wet saturated steam in the spiral forward movement process, fine particles in dust-containing waste heat flue gas continuously move forwards in a spiral manner towards the cyclone condensation area (4) due to the action of centrifugal force, meanwhile, vortex is generated under the action of vortex of a condensation vortex piece (5), and condensation and separation of fine particles carried in the dust-containing waste heat flue gas are realized under the mutual coupling action of sound waves, phase changes and turbulence.
2. Method for atomizing tangential rotational flow and agglomerating fine particles by acoustic wave according to claim 1, characterized in that the cross-sectional area of the flue gas inlet (1) and flue gas outlet (9) is smaller than the cross-sectional area of the double-layer cylinder (6);
the flue gas inlet (1) and the flue gas outlet (9) are connected with the double-layer cylinder (6) in a tapered transition way.
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