A cyclone dust collector that combines particle agglomeration and gas-solid separation functions

Abstract

This invention relates to a cyclone dust collector that couples particle agglomeration and gas-solid separation functions. An inverted conical cylinder formed by a cylindrical and conical tube serves as the reactor body for tangential impact flow. An exhaust pipe at the top of the cylinder facilitates the discharge of purified gas. A left and right air inlet are tangentially connected to the outer side of the cylinder. A diverter pipe is connected below both the left and right air inlets. The tail end of one diverter pipe connects to the other diverter pipe and then to the cavity of the reactor body. A solenoid valve is fixedly installed horizontally on both diverter pipes. Each solenoid valve is connected to a corresponding controller. The two controllers alternately output signals with the same periodic absolute value and 0 periodic signals, solving the problem of low dust removal efficiency in traditional cyclone dust collectors as dust particle size decreases, making it unable to efficiently separate particles smaller than 5µm.

Description

Technical Field

[0001] This invention belongs to the technical field of dust removal equipment, and relates to a cyclone dust collector that couples particle agglomeration and gas-solid separation functions, and more particularly to a cyclone dust collector that can promote particle agglomeration in flue gas under high temperature conditions and couples particle agglomeration and gas-solid separation functions. Background Technology

[0002] Currently, coal is the mainstream fuel for boilers. Coal combustion produces a large amount of flue gas, and fly ash in this gas can cause ash accumulation and slagging in the boiler furnace, affecting normal boiler operation. A common dust removal method in industry is the use of cyclone dust collectors. Cyclone dust collectors separate dust from flue gas through mechanical dust removal, using the combined effects of gravity and inertia. Dust-laden gas enters the cyclone dust collector tangentially through the inlet, rotating downwards on the outer wall. When the airflow reaches the bottom, it rotates upwards along the axis and finally exits from the exhaust port. During this rotation, dust particles are thrown towards the outer wall by centrifugal force. Dust particles reaching the outer wall then move downwards under the combined effects of inertia and gravity, flowing along the conical wall into the ash collection hopper.

[0003] The drawback of existing cyclone dust collectors is their low efficiency in capturing fine dust particles smaller than 5 μm and dust particles with low density. Moreover, as the particle size decreases, the dust collector's removal efficiency gradually decreases, and when the particle size is below a certain threshold, separation becomes impossible.

[0004] To improve the separation efficiency of flue gas in cyclone dust collectors, many researchers have proposed their own solutions. For example, Chinese patent application number CN201820672618.6 discloses a cyclone dust collector for boiler flue gas. This patent uses an external support plate to support the dust collection bin, preventing excessive weight from causing deformation of the conical cylinder; it adds a filter bin, through which the boiler flue gas is filtered a second time using a filter element, resulting in better filtration; and it uses shock-absorbing blocks to give the cyclone dust collector a vibration damping function, thereby reducing noise and creating a better working environment. While this patent improves separation efficiency by adding a filter element for secondary filtration of the separated flue gas, this can affect efficiency and increase operational risks when replacing filter bags. This patent, however, improves the separation efficiency of flue gas in a cyclone dust collector without adding external equipment, which is significantly different from this patent.

[0005] For example, Chinese patent application number CN202011211421.0 discloses a cyclone dust collector. This patent achieves three-stage dust removal treatment of dust-laden air by connecting two cyclone dust collectors. First, under the action of a fan, the dust-laden air is introduced into the main body of the first cyclone dust collector through the air inlet pipe for primary dust removal. The airflow then enters the main body of the second cyclone dust collector through the first connecting pipe for secondary dust removal. Subsequently, it enters the purification chamber through the second connecting pipe for tertiary dust removal. Finally, the dust-removed air is discharged through the air outlet pipe. The dust and airflow separation efficiency is high, and the dust removal is thorough. The method of improving dust removal efficiency in the previous patent is to repeatedly remove dust using multiple dust collectors, which has extremely limited ability to improve the removal capacity of small particle sizes. In contrast, this patent can effectively separate small particles.

[0006] For example, Chinese Patent CN202110782432.2 discloses a precise agglomerating agent distributor and a cyclone dust collector. The precise agglomerating agent distributor includes multiple injection holes, a sealing cover, an agglomerating agent inlet, and an injection hole clearing mechanism. The injection hole clearing mechanism is located inside the sealing cover. The injection holes are spirally arranged on the side wall of the cylindrical section of the dust collector, with their centerlines forming a 0-30° angle with the tangent of the spiral flow. The cyclone dust collector is equipped with a precise agglomerating agent distributor and an isolation cone. The conical surface of the cone is connected to the cylindrical section of the ash hopper via a flow pipe, which connects the sealing cover and the inner cavity of the isolation cone. Multiple isolation cone through holes are evenly distributed on the lowest circumferential surface of the isolation cone, with the centerlines of these through holes forming a 0-30° angle with the tangent of the spiral flow. A central hole is located along the central axis of the isolation cone. The precise agglomerating agent distributor accurately and evenly distributes the agglomerating agent into the dust collector, causing ultrafine dust particles to agglomerate into larger particles. Cyclone dust collectors equipped with a precise agglomerating agent distributor and an isolating cone can improve their separation efficiency. This patented method enhances dust removal efficiency by precisely and evenly distributing an appropriate amount of agglomerating agent into the gas-solid separation system through the distributor, causing ultrafine dust particles to agglomerate into larger particles. Simultaneously, it clears the injection orifices, ensuring their long-term stable and reliable operation. Furthermore, this patent utilizes a tangential impact flow reactor to adjust the agglomeration effect of flue gas particles in the collision zone.

[0007] In summary, existing methods for improving the separation efficiency of cyclone dust collectors can be categorized as follows: First, by adding extra devices to the main body of the cyclone dust collector to enhance flue gas separation efficiency; second, by adjusting the number of cyclone dust collectors to increase separation efficiency; and third, by spraying agglomerating agents to agglomerate particulate dust into larger particles. Without exception, these methods involve adding components to the original dust collector configuration, resulting in a bulky overall structure and failing to address the issue of removing particles smaller than 5µm. Summary of the Invention

[0008] In view of this, in order to solve the problem that traditional cyclone dust collectors cannot efficiently separate particles smaller than 5 μm as the dust particle size decreases, resulting in low dust removal efficiency, this invention provides a cyclone dust collector that couples particle agglomeration and gas-solid separation functions. It is suitable for most flue gas separations and has good promotional value.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A cyclone dust collector that couples particle agglomeration and gas-solid separation functions includes a cylinder, a conical cylinder, and a dust hopper connected sequentially from top to bottom. The inverted conical cylinder formed by the cylinder and the conical cylinder serves as the main body of the reactor for tangential impingement flow. The top of the cylinder is provided with an exhaust pipe for easy discharge of purified gas as an outlet. The outer side of the cylinder is tangentially connected to a left air inlet and a right air inlet that are parallel to each other. Both the left air inlet and the right air inlet are connected to a diverter pipe below them. The tail end of one diverter pipe is connected to the other diverter pipe and then connected to the cavity of the reactor body. A solenoid valve is fixedly installed at a horizontal position on both diverter pipes. Each solenoid valve is connected to a corresponding controller that controls the solenoid valve. The two controllers alternately output signals in the form of two periodic signals with the same periodic absolute value and 0, which causes the diverter flow rate of the left air inlet and the right air inlet connected to the solenoid valve to change constantly.

[0011] The beneficial effects of this basic scheme are as follows: Flue gas enters the tangential impinging flow reactor through two symmetrical inlets. After entering the cylinder, it impacts along the wall on the other side, where fly ash particles cause a sharp increase in particle concentration at the impact surface. During the impact, particles exhibit agglomeration, and the high particle concentration at the impact surface further enhances this agglomeration, ultimately making the particle size increase more pronounced. A controller is connected to the solenoid valve controlling the flow rate in the diversion pipe. The controller alternately outputs signals in the form of a sine wave absolute value and 0. This operation constantly changes the amount of flue gas diverted from the inlet where the solenoid valve is located to the diversion pipe, resulting in a constantly changing flow rate difference between the two sides of the cylinder. Therefore, the impact surface moves back and forth during the impact process, increasing the residence time of particles in the flue gas and enhancing the particle collision and agglomeration capabilities.

[0012] Furthermore, several swirl vanes are fixedly installed on the outer wall of the exhaust pipe inside the cylinder. The swirl vanes are installed higher than the horizontal section of the diverter pipe, and the inclination angle of the swirl vanes is 60-90°. Beneficial effect: The swirl vanes can change the flow direction of the flue gas. When the impacted flue gas flows downward into the swirl vanes, it rotates under the guidance of the vanes. This part of the flue gas exits from the swirl vanes and then merges with another part of the flue gas discharged from the diverter pipe. Together, they enter the cylinder tangentially along the inner wall of the cylinder, rotating downwards, and separating the fly ash particles under the action of centrifugal force.

[0013] Furthermore, the tilt angle of the swirl blades is 75°.

[0014] Furthermore, the left and right air inlets are symmetrically arranged radially along the cylinder and tangentially installed at the top of the cylinder. Beneficial effect: The tangential design of the left and right air inlets at the top of the cylinder allows the flue gas to impact the cylinder wall and then descend, forming a more compact impact surface with a higher particle concentration, thus improving particle agglomeration.

[0015] Furthermore, the solenoid valve is installed at the horizontal section of the corresponding diverter pipe. Beneficial effects: The solenoid valve is added to control the amount of airflow entering the diverter pipe. It allows for regular adjustment of the inlet flow rate, ensuring that the flue gas flow rates differ constantly during the impact of the flue gas on both sides, causing the impact surface to move repeatedly, increasing particle residence time, and enhancing particle agglomeration.

[0016] Furthermore, the controller on the solenoid valve outputs two periodic wave signals: the absolute value of a sine wave and zero. The benefits are: because this signal is a continuous, non-negative sine wave, it allows for convenient frequency domain analysis and modulation, making the signal output more flexible and efficient; simultaneously, because the output sine wave is simpler, signal offset during transmission is reduced, ensuring the accuracy and reliability of the output signal.

[0017] Furthermore, the output signal of the controller on the solenoid valve is a square wave signal, a triangular wave signal, or a sawtooth wave signal. Beneficial effect: To meet the needs of different scenarios, the signal output by the controller on the solenoid valve can be other periodic signals, such as square wave signals, triangular wave signals, sawtooth wave signals, etc.

[0018] Furthermore, the solenoid valve is connected to the distributor pipe via a threaded connection. Advantages: This connection method is inexpensive and facilitates installation and disassembly.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The cyclone dust collector disclosed in this invention, which combines particle agglomeration and gas-solid separation functions, differs from mainstream cyclone dust collectors that directly separate particles within the gas. This patented cyclone dust collector creatively utilizes the concept of impact flow for flue gas dust removal. High-temperature flue gas is introduced through the inlet, where it collides with each other on the other side of the chamber. Particles in the flue gas collide with each other, rapidly agglomerating in the collision-concentrated area, i.e., the impact surface. This causes a sharp increase in particle concentration, promoting the agglomeration of small particles into larger particles. Because the agglomerated particles have a significantly increased size, they are easier to separate from the flue gas, thereby improving the cyclone dust collector's efficiency in removing fine particles.

[0021] 2. The cyclone dust collector disclosed in this invention, which combines particle agglomeration and gas-solid separation functions, controls the amount of air diversion at both air inlets using a solenoid valve. This constantly changes the impact surface formed by the collision of the air inlets at both sides, prolongs the residence time of particles during the impact process, increases the probability of particle agglomeration, and thus improves dust removal efficiency.

[0022] The solenoid valves utilize a controller whose output signal consists of two cycles. One cycle is a sinusoidal absolute value signal, followed by a zero signal in the next cycle. The two cycles have the same period and alternate. The solenoid valve controllers for the two shunt pipes output signals with the same cycle, but differ in their initial cycle signals: one shunt pipe controller initially outputs a sinusoidal absolute value signal, while the other initially outputs a zero signal.

[0023] When the controller output on the left diversion pipe is in the form of an absolute sine wave, the flue gas from the left inlet is diverted in varying amounts depending on the opening size of the solenoid valve. This diverted flue gas enters the left diversion pipe and then flows into the reactor chamber through the pipe connected to the right diversion pipe. The undiverted flue gas impacts at the top of the chamber. During the same process, the controller output on the right diversion pipe is 0, the right solenoid valve remains closed, and the flue gas from the right inlet does not divert and all enters the top of the chamber to impact. Then, when the controller output on the left diversion pipe is 0, there is no diversion; during the same process, the controller output signal on the right diversion pipe is an absolute sine wave, and the right diversion pipe begins to divert.

[0024] Therefore, when the left diverter pipe diverts the gas while the right diverter pipe does not, the amount of flue gas at the left inlet is less than that at the right inlet; conversely, when the right diverter pipe diverts the gas while the left diverter pipe does not, the amount of flue gas at the right inlet is less than that at the left inlet. Because the amount of flue gas at both inlets constantly changes dynamically, with one being more and the other less, the impact surface formed when the two streams of flue gas collide will shift back and forth. The regular changes in the flue gas during the collision further enhance the visibility and persistence of this phenomenon, prolonging the residence time of particles during the collision process, expanding the impact surface area, and further increasing the probability of particle agglomeration, thus contributing to the removal of fine particles.

[0025] 3. The cyclone dust collector that combines particle agglomeration and gas-solid separation functions disclosed in this invention adds swirl blades to the exhaust pipe in the cylinder to change the flow direction of the flue gas after impact, enhance its rotational motion capability, strengthen its gas-solid separation capability, and thus improve the dust removal capability of the cyclone dust collector.

[0026] 4. The cyclone dust collector disclosed in this invention, which couples particle agglomeration and gas-solid separation functions, allows flue gas controlled by an electromagnetic valve to be tangentially introduced into the cylindrical section through a diverter pipe. This flue gas further mixes with the swirling flue gas from upstream, causing the already agglomerated particles to swirl together. The mixing process also intensifies the collisions between particles, thus enhancing particle agglomeration. Larger particles formed from the agglomeration of small particles fall along the cylinder wall into the ash hopper below under centrifugal force. The separated flue gas then rises and is discharged through the dust collector's outlet. This separation method combines the characteristics of axial-flow and tangential-flow cyclone dust collectors, further enhancing the separation function of the cyclone dust collector. Compared to traditional single-type cyclone dust collectors, this novel cyclone dust collector, which couples particle agglomeration and gas-solid separation functions under high-temperature conditions, significantly increases its ability to remove fine particles.

[0027] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of the cyclone dust collector of the present invention, which combines particle agglomeration and gas-solid separation functions. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of the cyclone dust collector of the present invention, which combines particle agglomeration and gas-solid separation functions. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of the structure of the cyclone dust collector removal controller that couples the functions of particle agglomeration and gas-solid separation of the present invention;

[0032] Figure 4 For the present invention Figure 1 Diagram showing the positional relationship between the left and right branch pipes;

[0033] Figure 5 For the present invention Figure 1 Schematic diagram of the structure of the swirling blade;

[0034] Figure 6 For the present invention Figure 1 A schematic diagram illustrating the flow rate variation controlled by a solenoid valve, wherein... Figure 6(a) is a schematic diagram of the flow rate change controlled by the solenoid valve on the left. Figure 6 (b) for Figure 6 (a) is a schematic diagram showing the change in the flow rate controlled by the left solenoid valve and the flow rate controlled by the right solenoid valve, respectively.

[0035] Figure 7 For the present invention Figure 1 A schematic diagram of the impact zone variation of the asymmetric impacting flow in a top view of a cyclone dust collector;

[0036] Figure 8 For the present invention Figure 1 A schematic diagram of the movement process of flue gas in a cyclone dust collector.

[0037] Reference numerals: 1. Air outlet; 2. Left air inlet; 3. Right air inlet; 4. Left diverter pipe; 5. Left solenoid valve; 6. Left controller; 7. Conical cylinder; 8. Ash hopper; 9. Cylindrical blade; 10. Outer wall of exhaust pipe; 11. Inner wall of cylindrical section; 12. Impact surface; 13. Right diverter pipe; 14. Right solenoid valve; 15. Right controller; 16. Detailed Implementation

[0038] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0040] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] like Figure 1-8 The cyclone dust collector shown includes a cylinder 9, a conical cylinder 7, and a dust hopper 8 connected sequentially from top to bottom. The inverted conical cylinder formed by the cylinder 9 and the conical cylinder 7 serves as the main body of the tangential impingement flow reactor. The top of the cylinder 9 is provided with an exhaust pipe as an outlet 1 to facilitate the discharge of purified gas. The outer side of the cylinder 9 is tangentially connected to a left air inlet 2 and a right air inlet 3 that are parallel to each other. Both the left air inlet 2 and the right air inlet 3 are connected to a diverter pipe below them. The tail end of one diverter pipe is connected to the other diverter pipe and then connected to the cavity of the reactor body. In this embodiment, the left diversion pipe 4 is connected to the right diversion pipe 14 and then to the cavity of the reactor cylinder 9. A left solenoid valve 5 is fixedly installed horizontally on the left diversion pipe 4, and a left controller 6 is connected to the left solenoid valve 5. A right solenoid valve 15 is fixedly installed horizontally on the right diversion pipe 14, and a right controller 16 is connected to the right solenoid valve 15. The output signals of the left controller 6 and the right controller 16 are not fixed and are selected according to actual needs. The left controller 6 and the right controller 16 output signals in the form of absolute values ​​of sine waves. The solenoid valves and their corresponding diversion pipes are connected by threads for easy installation and disassembly.

[0042] The tail end of the left shunt pipe 4 is connected to the right shunt pipe 4 and the cavity of the cylinder 9.

[0043] Figure 6 (a) is a schematic diagram of the flow rate change controlled by the solenoid valve on the left. Figure 6 (b) for Figure 6(a) is a schematic diagram showing the change in flow rate controlled by the right solenoid valve corresponding to the flow rate controlled by the left solenoid valve. When the output of the left controller 6 on the left diversion pipe 4 is in the form of an absolute sine wave, the flue gas in the left inlet 2 is diverted in varying amounts depending on the opening size of the left solenoid valve 5. This flue gas enters the left diversion pipe 4 and then enters the reactor cavity along the pipe connected to the right diversion pipe 14. The undiverted flue gas impacts the top of the cavity. During the same process, the right controller 16 on the right diversion pipe 14 outputs a signal of 0, the right solenoid valve 15 remains closed, and the flue gas in the right inlet 3 does not divert and all enters the top of the cavity to impact. Then, when the output of the left controller 6 on the left diversion pipe 4 is 0, there is no diversion. During the same process, the output signal of the right controller 16 on the right diversion pipe 14 is an absolute sine wave, and the right diversion pipe 14 begins to divert.

[0044] Therefore, when the left diverter 4 diverts the gas while the right diverter 14 does not, the amount of flue gas in the left inlet 2 is less than that in the right inlet 3; conversely, when the right diverter 14 diverts the gas while the left diverter 4 does not, the amount of flue gas in the right inlet 3 is less than that in the left inlet 2. Because the amount of flue gas in the two inlets constantly changes dynamically, the impact surface will shift back and forth when the two streams of flue gas collide along the area formed by the inner wall 12 of the cylinder and the outer wall 11 of the exhaust pipe (i.e., the impact zone). The regular change in the flue gas during impact further enhances the visibility and persistence of this phenomenon, prolonging the residence time of particles during impact, expanding the impact surface area, and further increasing the probability of particle agglomeration, thus aiding in the removal of fine particles.

[0045] Several swirl vanes 10 are fixedly installed on the outer wall 11 of the exhaust pipe inside the cylinder 9. The inclination angle of the swirl vanes 10 is 60-90°, preferably 75°. The swirl vanes 10 are installed slightly higher than the horizontal section of the diverter pipe 4. The swirl vanes 10 can change the flow direction of the flue gas. When the flue gas after impact flows downward into the swirl vanes 10, it rotates under the guidance of the swirl vanes 10. After exiting the swirl vanes 10, it merges with the flue gas entering the diverter pipe 4 from the right air inlet 3. It enters the cylinder section tangentially along the inner wall of the cylinder 9 and rotates downward. Under the action of centrifugal force, the fly ash particles are separated.

[0046] The solenoid valve is added to control the amount of air entering the corresponding split pipe, thereby regularly reducing the flow rate at the corresponding air inlet, causing the impact surface 13 to move repeatedly, increasing the particle residence time, and enhancing the particle agglomeration ability.

[0047] The controller continuously changes the opening size of the corresponding solenoid valve, causing the flow rate at the corresponding inlet to change constantly. This results in a constantly changing flow rate difference between the flue gas entering the two sides of the cylinder 9, causing the impact surface 13 to move back and forth during the impact process. As the particles agglomerate, the flue gas flows downward along the top of the cylinder 9. When the impacted flue gas reaches the lower swirl blade 10, it will swirl with the rotation shape of the blade. Meanwhile, another part of the flue gas, which is diverted from the inlet into the diversion pipe, enters the cylinder tangentially. At this time, the flue gas exiting from the swirl blade 10 will merge into this part of the flue gas, and together they will begin to rotate downward along the inner wall of the cylinder 9. When they reach a certain position in the conical cylinder 7, the flue gas rises in the opposite direction and is discharged through the outlet 1. The separated particles fall into the ash hopper 8 through the outlet of the conical cylinder 7.

[0048] The specific flow distribution relationship of each intake manifold is as follows:

[0049] Q = Q1 + Q2

[0050] Q1 = Q2

[0051] Q1 = Q3 + Q L1

[0052] Q2 = Q4 + Q L2

[0053] Where: the total flue gas volume is Q(m³) 3 / s), the amount of flue gas entering the left air inlet is Q1(m 3 / s), the amount of flue gas entering the right air inlet is Q2(m 3 / s). The amount of flue gas directly entering the cylindrical section in Q1 is Q3 (m). 3 / s), the amount of flue gas diverted into the diversion pipe is Q L1 (m 3 / s), The amount of flue gas directly entering the cylindrical section in Q2 is Q4 (m³). 3 / s), the amount of flue gas diverted into the diversion pipe is Q L2 (m 3 / s), T is one period of the absolute value of the sine wave.

[0054] The rotation angle of the swirl blades is selected as follows:

[0055] θ=arctan((2*h) / (bd))

[0056] Where: θ is the maximum flow angle, h is the blade height, b is the blade width, and d is the blade thickness.

[0057] In this embodiment, when designing the swirl blades, h = 20cm, b = 11.5cm, d = 1cm, and the calculated blade rotation angle is 75°.

[0058] The left air inlet 2 and the right air inlet 3 are symmetrically arranged along the radial direction of the cylinder 9 and are tangentially installed at the top of the cylinder 9. The tangential design of the left air inlet 2 and the right air inlet 3 at the top of the cylinder 9 allows the flue gas to impact the top wall of the cylinder 9 and then form a larger impact surface 13 with a higher particle concentration, thereby improving the particle agglomeration effect.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A cyclone dust collector coupling a particle agglomeration function and a gas-solid separation function, characterized by, The application relates to a tangential impingement flow reactor, which comprises a cylinder, a conical cylinder and a dust hopper connected in sequence from top to bottom, wherein the inverted conical cylinder formed by the cylinder and the conical cylinder serves as a reactor main body, the top of the cylinder is provided with an exhaust pipe serving as a gas outlet for facilitating the exhaust of purified gas, the outer side of the cylinder is tangentially connected with left and right gas inlets which are parallel to each other, the left and right gas inlets are symmetrically arranged along the radial direction of the cylinder and are tangentially installed on the top of the cylinder, each of the left and right gas inlets is connected with a shunt pipe, the tail end of one shunt pipe is connected with the other shunt pipe, and the cavity of the reactor main body is connected with the tail end of the other shunt pipe; a solenoid valve is fixedly installed at the horizontal position of each shunt pipe, a controller for controlling the solenoid valve is connected with each solenoid valve, the two controllers alternately output signals in the form of two periodic wave signals with the same period and alternately output signals, so that the flow rates of the left and right gas inlets connected with the solenoid valves change at any time; a plurality of cyclone vanes are fixedly installed on the outer wall of the exhaust pipe in the cylinder, and the installation position of the cyclone vanes is higher than the horizontal section of the shunt pipe.

2. The cyclone of claim 1 wherein, The inclination angle of the cyclone vanes is 60-90 degrees.

3. The cyclone of claim 1 wherein, The inclination angle of the cyclone vanes is 75 degrees.

4. The cyclone of claim 1 wherein, The controller of the solenoid valve outputs two periodic wave signals with the absolute value of a sine wave and 0.

5. The cyclone separator of claim 1 wherein, The output signal of the controller of the solenoid valve is a square wave signal, a triangular wave signal or a sawtooth wave signal.

6. The cyclone of claim 1 wherein, The solenoid valve and the shunt pipe are connected through threads.

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