Dynamic fly ash pyrolyzing furnace device and method

Abstract

The invention discloses a dynamic fly ash pyrolyzing furnace device and method, and relates to the technical field of fly ash treatment. The device comprises an ash inlet bottom pipe, a primary crusher, a vibration crushing pipe, a high-temperature pyrolysis assembly and the like. A high-temperature-resistant vibration mesh screen is arranged in the vibration crushing pipe, a high-frequency pulse airflow assembly is arranged at one end of the vibration crushing pipe, a high-temperature pyrolysis assembly is arranged at the other end of the vibration crushing pipe, a downstream cavity is provided with a non-sealed pneumatic assembly, and an upstream cavity is provided with an elastic guide assembly elastically matched with the non-sealed pneumatic assembly. According to the invention, through cooperation of multiple components, the fly ash is preliminarily crushed, then airflow blowing and vibration crushing are carried out, and finally deep pyrolysis is carried out. According to the device, the fly ash can be crushed to be finer, the pyrolysis efficiency is improved, and harmlessness and recycling of the fly ash are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fly ash treatment, and particularly to a dynamic fly ash pyrolysis furnace device and method. Background Art

[0002] In modern garbage treatment, dead leaf burning and other processes, a large amount of fly ash is generated. These fly ashes often contain harmful substances such as heavy metals and dioxins. If directly discharged without proper treatment, they will cause serious pollution to soil, water sources and air, threatening the ecological environment and human health. Therefore, in-depth pyrolysis treatment of fly ash has become a key link. In-depth pyrolysis can effectively decompose harmful substances, reduce the harmfulness of fly ash, and even realize the recycling of some resources.

[0003] Before pyrolyzing fly ash, pulverizing the fly ash is an important step to improve the pyrolysis efficiency. Because the size of fly ash particles directly affects the contact area and reaction rate of the pyrolysis reaction. At present, the commonly used pulverizing method is to use a conventional spiral blade to process large pieces of fly ash. However, this ordinary spiral blade crushing method has obvious defects: on the one hand, the crushing effect of the spiral blade is relatively single, mainly relying on mechanical extrusion and cutting, and it is difficult to crush the fly ash to an ideal small size; on the other hand, during the crushing process, the fly ash is prone to agglomeration, further affecting the crushing effect, resulting in a relatively large size of the finally crushed fly ash. This limits the contact area between the fly ash and the pyrolysis medium during subsequent pyrolysis, the pyrolysis reaction cannot proceed fully, reducing the pyrolysis efficiency and increasing the pyrolysis cost, and it is difficult to meet the high standards of environmental protection and resource utilization. Summary of the Invention

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0005] The present invention provides a dynamic fly ash pyrolysis furnace device, including an ash inlet bottom pipe, a preliminary crusher communicated with the ash inlet bottom pipe, a vibration crushing pipe arranged downstream of the preliminary crusher, a high-temperature resistant vibration screen arranged inside the vibration crushing pipe, a high-frequency pulse air flow component arranged at one end of the vibration crushing pipe, and a high-temperature pyrolysis component arranged at the other end of the vibration crushing pipe. Among them, the vibration crushing pipe includes an upstream cavity located on the upstream side of the high-temperature resistant vibration screen and a downstream cavity located on the downstream side of the high-temperature resistant vibration screen.

[0006] The high-frequency pulse air flow component includes a matrix air flow nozzle facing the upstream cavity to discharge air, a nozzle angle fine adjuster driving the matrix air flow nozzle to rotate, and a first pulse air flow valve connected to the matrix air flow nozzle through an air pipe.

[0007] The downstream cavity of the vibration crushing tube is configured with a plurality of unsealed pneumatic components distributed at equal intervals, and the upstream cavity of the vibration crushing tube is configured with an elastic guiding component that elastically cooperates with the unsealed pneumatic components. The unsealed pneumatic components include a fixed sleeve fixedly connected to the edge area of a plurality of high-temperature resistant vibrating sieves, a high-frequency air outlet pipe fixed to the inner wall of the downstream cavity and movably inserted into the fixed sleeve, and a second pulse air flow valve communicated with the high-frequency air outlet pipe through an air pipe. The first pulse air flow valve and the second pulse air flow valve are connected to the air supply equipment through an air pipe at the upstream.

[0008] As a preferred technical solution of the device of the present invention: The circumferential side surface of the high-temperature resistant vibrating sieve in contact with the inner wall of the vibration crushing tube is coated with a phosphate-based coating.

[0009] As a preferred technical solution of the device of the present invention: The ribs of the high-temperature resistant vibrating sieve are provided with crushing triangular tips on the side facing the upstream cavity.

[0010] As a preferred technical solution of the device of the present invention: The fluid cross-sectional area of the upstream cavity of the vibration crushing tube is smaller than that of the downstream cavity. Among them, the fluid cross-sectional area of the downstream cavity gradually increases from the high-temperature resistant vibrating sieve to the high-temperature pyrolysis component.

[0011] As a preferred technical solution of the device of the present invention: An air flow impact area is formed between the air outlet end of the high-frequency air outlet pipe and the innermost area of the fixed sleeve cavity, and an air flow leakage gap is formed between the circumferential side of the high-frequency air outlet pipe and the circumferential side wall surface of the fixed sleeve cavity.

[0012] As a preferred technical solution of the device of the present invention: The end surface of the air outlet end of the high-frequency air outlet pipe is provided with a turbulent flow spherical surface, and the inner end spherical surface with a radial dimension larger than that of the turbulent flow spherical surface is provided on the wall surface of the innermost area of the fixed sleeve.

[0013] As a preferred technical solution of the device of the present invention: The elastic guiding component includes a plurality of guide sleeves fixedly arranged on the inner wall of the upstream cavity at equal intervals, a guide rod slidably connected to the guide sleeve, the guide rod is fixedly connected to the edge area of the high-temperature resistant vibrating sieve, and a tension spring is sleeved on the guide rod and located between the guide sleeve and the high-temperature resistant vibrating sieve.

[0014] The present invention also provides a dynamic fly ash pyrolysis treatment method, including the following steps:

[0015] S1. Fly ash enters the preliminary crusher through the ash inlet bottom pipe and is subjected to preliminary crushing treatment in the preliminary crusher.

[0016] S2. The fly ash after preliminary crushing enters the upstream cavity of the vibration crushing tube, the air supply equipment supplies air to the first pulse air flow valve, and the air flow controlled by the first pulse air flow valve exits through the matrix air flow nozzle towards the upstream cavity and the high-temperature resistant vibrating sieve.

[0017] S3. The nozzle angle fine adjuster periodically drives the matrix air flow nozzles to deflect, and blows the fly ash adhering to the high-temperature resistant vibrating screen away from the mesh holes at different angles.

[0018] S4. The air supply device supplies air to the second pulsed air flow valve, the second pulsed air flow valve outputs pulsed air flow to the non-sealed pneumatic component, the high-frequency air outlet pipe in the non-sealed pneumatic component outputs air to the fixed sleeve, and the high-temperature resistant vibrating screen vibrates under the cooperation of the non-sealed pneumatic component and the elastic guiding component.

[0019] S5. The cross-sectional area of the fluid in the upstream cavity is smaller than that in the downstream cavity, and the flow velocity in the upstream cavity is relatively faster than that in the downstream cavity. When the fly ash passes through the high-temperature resistant vibrating screen, the fly ash is broken by the high-temperature resistant vibrating screen and enters the downstream cavity. When the fly ash enters the downstream cavity, the moving speed of the fly ash decreases and the diffusion effect increases.

[0020] S6. After the fly ash is fully diffused in the downstream cavity, it enters the high-temperature pyrolysis component, and the high-temperature pyrolysis component performs in-depth pyrolysis treatment on the fly ash to complete the whole process of fly ash pyrolysis.

[0021] Compared with the existing technology, the beneficial effects of the present invention are as follows:

[0022] Through the cooperation of the preliminary crusher and the vibrating crushing pipe, especially the synergistic effect of the high-temperature resistant vibrating screen and the high-frequency pulsed air flow component in the vibrating crushing pipe, the fly ash can be broken into finer particles in the present invention. Through the high-frequency pulsed air flow blown out from the matrix air flow nozzles at multiple angles, the fly ash adhering to the screen can be blown away, and the nozzle angle fine adjuster can also periodically change the blowing angle to ensure the full dispersion of the fly ash; the rib of the high-temperature resistant vibrating screen is provided with a crushing triangular tip, which can further crush the fly ash when it passes through, and smaller particle size fly ash particles can be obtained compared with the traditional spiral blade crushing, which is beneficial to the energy-saving and efficient pyrolysis operation of the fly ash by the subsequent high-temperature pyrolysis component. Brief Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0024] Figure 2 It is Figure 1 The schematic diagram of the partial enlarged structure at A in

[0025] Figure 3 It is Figure 1 The schematic diagram of the partial enlarged structure at B in

[0026] Figure 4 It is Figure 3 The schematic diagram of the partial enlarged structure at C in

[0027] Figure 5 It is the schematic diagram of the structure of the fixed sleeve and the high-frequency air outlet pipe cooperating with each other in the present invention.

[0028] Wherein: 1 - ash inlet bottom pipe; 2 - preliminary crusher; 3 - vibrating crushing pipe, 301 - upstream cavity, 302 - downstream cavity; 4 - high-temperature pyrolysis component; 5 - nozzle angle fine adjuster; 6 - matrix air flow nozzle; 7 - first pulse air flow valve; 8 - high-temperature resistant vibrating screen, 801 - crushing triangular tip; 9 - second pulse air flow valve; 10 - air supply equipment; 11 - guide sleeve; 12 - guide rod; 13 - tension spring; 14 - fixed sleeve, 1401 - inner end spherical surface; 15 - air flow impact area; 16 - high-frequency gas outlet pipe, 1601 - flow disturbance spherical surface; 17 - air flow leakage gap. Specific Embodiment

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Embodiment 1. The present invention designs a dynamic fly ash pyrolysis furnace device, which is mainly configured with a preliminary crusher 2, a vibrating crushing pipe 3, a high-temperature resistant vibrating screen 8, a high-frequency pulse air flow component, a non-sealed pneumatic component and an elastic guiding component. The specific structure is as follows:

[0031] Overall structure: As Figure 1 shown, the device is mainly composed of an ash inlet bottom pipe 1, a preliminary crusher 2, a vibrating crushing pipe 3, a high-temperature pyrolysis component 4, a high-frequency pulse air flow component, a non-sealed pneumatic component and an elastic guiding component. Fly ash first enters the preliminary crusher 2 through the ash inlet bottom pipe 1, is preliminarily crushed and then enters the vibrating crushing pipe 3, and finally completes deep pyrolysis in the high-temperature pyrolysis component 4.

[0032] (1) Preliminary crusher 2: As Figure 1 shown, it preliminarily processes the fly ash entering the device, breaks the larger pieces of fly ash into relatively smaller particles, and prepares for further crushing in the vibrating crushing pipe 3 later. It can pre-reduce the particle size of fly ash, reduce the subsequent crushing difficulty, and improve the overall crushing efficiency.

[0033] (2) Vibrating crushing pipe 3: As Figure 1 、 Figure 3 、 Figure 4, which includes an upstream cavity 301 and a downstream cavity 302, is a key component for fly ash crushing. The fluid cross-sectional area of the upstream cavity 301 is smaller than that of the downstream cavity 302. This design makes the air flow velocity faster in the upstream cavity 301. When the fly ash passes from the upstream cavity 301 through the high-temperature resistant vibrating screen 8 into the downstream cavity 302, the fly ash is crushed using the velocity difference. At the same time, the fluid cross-sectional area of the downstream cavity 302 gradually increases from the high-temperature resistant vibrating screen 8 towards the high-temperature pyrolysis component 4. After the fly ash enters the downstream cavity 302, its moving speed decreases and the diffusion effect increases, which is beneficial for the subsequent pyrolysis reaction to proceed fully.

[0034] (III) High-temperature resistant vibrating screen 8: As Figure 1 , Figure 3 , Figure 4 , a crushing triangular tip 801 is provided on the side of the rib towards the upstream cavity 301. When the fly ash quickly passes through the high-temperature resistant vibrating screen 8, the crushing triangular tip 801 can cut and crush the fly ash, further reducing the particle size of the fly ash. Compared with the traditional crushing method, finer fly ash particles can be obtained, increasing the contact area between the fly ash and the pyrolysis medium and improving the pyrolysis efficiency.

[0035] Phosphate-based coating: A phosphate-based coating is applied to the circumferential side in contact with the inner wall of the vibration crushing tube 3, which can play the role of high-temperature resistance and corrosion prevention, protect the high-temperature resistant vibrating screen 8, extend its service life, and ensure stable operation in a high-temperature environment.

[0036] (IV) High-frequency pulsed air flow component: As Figure 1 , Figure 2 , it includes a matrix-type air flow nozzle 6, a nozzle angle fine adjuster 5, and a first pulsed air flow valve 7.

[0037] Matrix-type air flow nozzle 6: It discharges air towards the upstream cavity 301 and the high-temperature resistant vibrating screen 8. The blown high-frequency pulsed air flow can blow away the fly ash attached to the mesh holes of the high-temperature resistant vibrating screen 8, prevent mesh hole blockage, and ensure the smooth passage of the fly ash.

[0038] Nozzle angle fine adjuster 5: It drives the matrix-type air flow nozzle 6 to rotate, periodically changing the blowing angle, and blowing the fly ash attached to the screen from different directions to make the fly ash more fully dispersed and improve the crushing effect.

[0039] First pulsed air flow valve 7: It controls the air flow entering the matrix-type air flow nozzle 6 to achieve pulsed air supply, enhances the impact of the air flow on the fly ash, and assists in fly ash crushing.

[0040] (V) Non-sealed pneumatic component: As Figure 1 , Figure 3 , Figure 4 , Figure 5 , it includes a second pulsed air flow valve 9, a fixed sleeve 14, and a high-frequency air outlet pipe 16.

[0041] Fixed sleeve 14: fixedly connected to the edge area of a plurality of high-temperature resistant vibrating sieves 8, providing an installation position for the high-frequency air outlet pipe 16, and driving the high-temperature resistant vibrating sieve 8 to vibrate when the high-frequency air outlet pipe 16 discharges air.

[0042] High-frequency air outlet pipe 16: fixed to the inner wall of the downstream cavity 302 and movably inserted into the fixed sleeve 14, supplied with air through the second pulsed air valve 9, and discharging air into the fixed sleeve 14. An air flow impact area 15 is formed between the air outlet end and the innermost area of the cavity of the fixed sleeve 14, and the generated impact force can push the high-temperature resistant vibrating sieve 8 to vibrate; an air leakage gap 17 is formed between the circumferential side and the circumferential side wall surface of the cavity of the fixed sleeve 14 to ensure the normal flow of air and avoid excessive pressure. A flow disturbing spherical surface 1601 is arranged on the end face of the air outlet end, which can change the air flow direction, enhance the disturbance of the air flow in the fixed sleeve 14, and improve the vibration effect.

[0043] Second pulsed air valve 9: controls the air flow entering the high-frequency air outlet pipe 16, outputs pulsed air flow, drives the high-frequency air outlet pipe 16 to act, and further causes the high-temperature resistant vibrating sieve 8 to vibrate to assist in fly ash crushing.

[0044] (VI) Elastic guiding assembly: such as Figure 3 、 Figure 4 , including a guiding sleeve 11, a guide rod 12, and a tension spring 13.

[0045] Guiding sleeve 11: fixed to the inner wall of the upstream cavity 301, distributed at equal intervals, providing a guiding function for the guide rod 12, and ensuring the stability of the guide rod 12 during the sliding process.

[0046] Guide rod 12: slidably connected to the guiding sleeve 11, with one end fixedly connected to the edge area of the high-temperature resistant vibrating sieve 8, and sliding along with the vibration of the high-temperature resistant vibrating sieve 8 under the restriction of the guiding sleeve 11.

[0047] Tension spring 13: sleeved on the guide rod 12, located between the guiding sleeve 11 and the high-temperature resistant vibrating sieve 8. Under the action of the non-sealed pneumatic assembly, when the high-temperature resistant vibrating sieve 8 vibrates, the tension spring 13 plays a buffering and resetting role, making the vibration of the high-temperature resistant vibrating sieve 8 more stable, and helping the high-temperature resistant vibrating sieve 8 to return to the initial position when the non-sealed pneumatic assembly stops working.

[0048] Embodiment 2. The present invention designs a dynamic fly ash pyrolysis treatment method, and the specific working principle is as follows:

[0049] Step 1. Preliminary crushing: Fly ash enters the preliminary crusher 2 through the ash inlet bottom pipe 1, and the preliminary crusher 2 performs preliminary crushing on the fly ash, breaking large particle fly ash into smaller particles, reducing the subsequent crushing difficulty, and improving the overall treatment efficiency.

[0050] Step 2: Airflow Blowing and Vibration Preparation: The preliminarily crushed fly ash enters the upstream cavity 301 of the vibration crushing tube 3. The air supply device 10 supplies air to the first pulsed air valve 7, and the air flow controlled by the first pulsed air valve 7 exits through the matrix air nozzle 6 towards the upstream cavity 301 and the high-temperature resistant vibration sieve 8. In this step, on the one hand, the air flow blows the fly ash, and on the other hand, it prepares for the operation of the subsequent nozzle angle adjuster 5, making the fly ash in a state where it can be blown from multiple angles.

[0051] Step 3: Multi-angle Ash Blowing: The nozzle angle adjuster 5 periodically drives the matrix air nozzle 6 to deflect, blowing the fly ash attached to the high-temperature resistant vibration sieve 8 away from the mesh holes from different angles. Through multi-angle ash blowing, the agglomeration of fly ash is effectively avoided, making the fly ash more evenly distributed in the vibration crushing tube 3, improving the crushing effect, and providing more favorable conditions for subsequent pyrolysis.

[0052] Step 4: Vibration Crushing: The air supply device 10 supplies air to the second pulsed air valve 9, and the second pulsed air valve 9 outputs pulsed air flow to the non-sealed pneumatic component. The high-frequency air outlet pipe 16 in the non-sealed pneumatic component exits air towards the fixed sleeve 14. The high-temperature resistant vibration sieve 8 vibrates under the cooperation of the non-sealed pneumatic component and the elastic guiding component. During the vibration process, the crushing triangular tip 801 of the high-temperature resistant vibration sieve 8 further crushes the fly ash, crushing the fly ash into finer particles.

[0053] Step 5: Particle Size Adjustment and Diffusion: Since the cross-sectional area of the fluid in the upstream cavity 301 is smaller than that in the downstream cavity 302, the flow rate in the upstream cavity 301 is relatively faster than that in the downstream cavity 302. The fly ash is crushed when passing through the high-temperature resistant vibration sieve 8 and enters the downstream cavity 302. After the fly ash enters the downstream cavity 302, its moving speed decreases and the diffusion effect increases, which is beneficial to the full progress of the subsequent pyrolysis reaction, ensuring the high efficiency and thoroughness of pyrolysis.

[0054] Step 6: Deep Pyrolysis: After the fly ash is fully diffused in the downstream cavity 302, it enters the high-temperature pyrolysis component 4. The high-temperature pyrolysis component 4 conducts deep pyrolysis treatment on the fly ash, decomposing the harmful substances in it, realizing the harmlessness and resource utilization of the fly ash, and completing the whole process of fly ash pyrolysis.

[0055] In summary, the dynamic fly ash pyrolysis furnace device and method work together through multiple components, playing their respective roles in the process of fly ash crushing and pyrolysis, effectively solving the problems of poor crushing effect and low pyrolysis efficiency in traditional fly ash treatment methods, and having significant environmental protection and economic significance.

[0056] Embodiment 3: The present invention designs the parameters of the fly ash treatment equipment as follows:

[0057] (1) Parameter Matching of the Crushing System

[0058] The particle size D1 of the output of the primary crusher > the aperture D2 of the high-temperature resistant vibrating screen (ensuring that the particles that do not pass through the screen are crushed a second time).

[0059] The effective pyrolysis particle size D3 < D2 (the pyrolysis efficiency is inversely proportional to the particle size, and D3 needs to meet the requirements of the pyrolysis contact area).

[0060] High-frequency pulsed air flow kinetic energy Needs to be greater than the fly ash agglomeration force (ρ is the air flow density, v1 is the air flow velocity in the upstream cavity, A1 is the cross-sectional area of the upstream cavity, and t is the pulse time).

[0061] Vibrating kinetic energy of the vibrating screen Needs to match the shear force required for fly ash crushing (k is the elastic coefficient of the tension spring, and x is the vibration displacement).

[0062] (2) Relationship between air flow dynamic pressure and flow velocity

[0063] The cross-sectional area A1 of the upstream cavity < the cross-sectional area A2 of the downstream cavity, satisfying v1 = v2·(A2 / A1) (continuity equation, v1 is the upstream flow velocity, and v2 is the downstream flow velocity).

[0064] (3) Relationship between temperature and pyrolysis efficiency

[0065] Pyrolysis temperature T p > The dioxin decomposition temperature (850 °C) and < the heavy metal volatilization temperature (above 1000 °C needs to be controlled).

[0066] Fly ash residence time t p Satisfy t p ≥t min (t min Is the time required for the complete decomposition of harmful substances, and is positively correlated with the particle size D3).

[0067] (4) Mechanical vibration parameters

[0068] The elastic coefficient k of the tension spring and the mass m of the vibrating screen satisfy k = (2πf0) 2 m (natural frequency formula), where f0 is the natural frequency of the vibrating screen, and the frequency of the second pulsed air flow valve is close to the natural frequency f0 of the vibrating screen. The guide rod stroke L > the vibration displacement x (ensuring no jamming during vibration, L = 1.5x)

[0069] II. Specific parameter examples

[0070] (1) Crushing system parameters

[0071]

[0072] (2) Air flow dynamic pressure parameters

[0073]

[0074]

[0075] (III) Vibration and Mechanical Parameters

[0076]

[0077]

[0078] (IV) Parameters of the High-Temperature Pyrolysis Component

[0079]

[0080] (V) Material and Coating Parameters

[0081]

[0082] Through the design of the above parameters, the collaborative optimization of the crushing efficiency, pyrolysis efficiency and equipment life is achieved, meeting the requirements of environmental protection and resource treatment.

[0083] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dynamic fly ash pyrolysis furnace device, including an ash inlet bottom pipe (1) and a preliminary crusher (2) connected to the ash inlet bottom pipe (1), characterized in that: A vibration crushing pipe (3) is arranged downstream of the preliminary crusher (2). A high-temperature resistant vibration sieve (8) is arranged inside the vibration crushing pipe (3). One end of the vibration crushing pipe (3) is provided with a high-frequency pulse air flow assembly, and the other end of the vibration crushing pipe (3) is provided with a high-temperature pyrolysis assembly (4); Among them, the vibration crushing pipe (3) includes an upstream cavity (301) located on the upstream side of the high-temperature resistant vibration sieve (8) and a downstream cavity (302) located on the downstream side of the high-temperature resistant vibration sieve (8); The high-frequency pulse air flow assembly includes a matrix air flow nozzle (6) that discharges air towards the upstream cavity (301), a nozzle angle fine adjuster (5) that drives the matrix air flow nozzle (6) to rotate, and a first pulse air flow valve (7) connected to the matrix air flow nozzle (6) through an air pipe; A plurality of equally spaced non-sealed pneumatic assemblies are arranged in the downstream cavity (302) of the vibration crushing pipe (3), and an elastic guiding assembly elastically matched with the non-sealed pneumatic assemblies is arranged in the upstream cavity (301) of the vibration crushing pipe (3); The non-sealed pneumatic assembly includes a fixed sleeve (14) fixedly connected to the edge area of a plurality of high-temperature resistant vibration sieves (8), a high-frequency air outlet pipe (16) fixed to the inner wall of the downstream cavity (302) and movably inserted into the fixed sleeve (14), and a second pulse air flow valve (9) connected to the high-frequency air outlet pipe (16) through an air pipe; The upstream of the first pulse air flow valve (7) and the second pulse air flow valve (9) is connected to a gas supply device (10) through an air pipe.

2. The dynamic fly ash pyrolysis furnace device according to claim 1, characterized in that: A phosphate-based coating is applied to the circumferential side surface of the high-temperature resistant vibration sieve (8) in contact with the inner wall of the vibration crushing pipe (3).

3. The dynamic fly ash pyrolysis furnace device according to claim 1, characterized in that: Crushing triangular tips (801) are arranged on the ribs of the high-temperature resistant vibration sieve (8) on the side facing the upstream cavity (301).

4. The dynamic fly ash pyrolysis furnace device according to claim 1, characterized in that: The fluid cross-sectional area of the upstream cavity (301) of the vibration crushing pipe (3) is smaller than the fluid cross-sectional area of the downstream cavity (302); Among them, the fluid cross-sectional area of the downstream cavity (302) gradually increases from the high-temperature resistant vibration sieve (8) to the high-temperature pyrolysis assembly (4).

5. The dynamic fly ash pyrolysis furnace device according to claim 1, characterized in that: An air flow impact area (15) is formed between the air outlet end of the high-frequency air outlet pipe (16) and the innermost area of the cavity of the fixed sleeve (14), and an air flow leakage gap (17) is formed between the circumferential side of the high-frequency air outlet pipe (16) and the circumferential side wall surface of the cavity of the fixed sleeve (14).

6. The dynamic fly ash pyrolysis furnace device according to claim 1 or 5, characterized in that: The end face of the gas outlet end of the high-frequency gas outlet pipe (16) is provided with a flow disturbance spherical surface (1601), and the inner end spherical surface (1401) with a radial dimension larger than that of the flow disturbance spherical surface (1601) is provided on the wall surface of the innermost region of the fixed sleeve (14).

7. A dynamic fly ash pyrolysis furnace device according to claim 1, characterized in that: The elastic guiding assembly includes a plurality of equally spaced guiding sleeves (11) fixed to the inner wall of the upstream cavity (301), a guide rod (12) slidably connected to the guiding sleeve (11), the guide rod (12) is fixedly connected to the edge area of the high-temperature resistant vibrating screen (8), and a tension spring (13) located between the guiding sleeve (11) and the high-temperature resistant vibrating screen (8) is sleeved on the guide rod (12).

8. A method for dynamically pyrolyzing fly ash, characterized in that, Using a dynamic fly ash pyrolysis furnace device according to any one of claims 1 to 7, including the following steps: S1. Fly ash enters the preliminary crusher (2) through the ash inlet bottom pipe (1) and is subjected to preliminary crushing treatment in the preliminary crusher (2); S2. The preliminarily crushed fly ash enters the upstream cavity (301) of the vibrating crushing pipe (3), the gas supply device (10) supplies gas to the first pulsed air flow valve (7), and the air flow controlled by the first pulsed air flow valve (7) exits through the matrix air flow nozzles (6) towards the upstream cavity (301) and the high-temperature resistant vibrating screen (8); S3. The nozzle angle fine adjuster (5) periodically drives the matrix air flow nozzles (6) to deflect, and blows the fly ash attached to the high-temperature resistant vibrating screen (8) away from the mesh holes from different angles; S4. The gas supply device (10) supplies gas to the second pulsed air flow valve (9), the second pulsed air flow valve (9) outputs pulsed air flow to the non-sealed pneumatic assembly, the high-frequency gas outlet pipe (16) in the non-sealed pneumatic assembly discharges gas to the fixed sleeve (14), and the high-temperature resistant vibrating screen (8) vibrates under the cooperation of the non-sealed pneumatic assembly and the elastic guiding assembly; S5. The cross-sectional area of the fluid in the upstream cavity (301) is smaller than that in the downstream cavity (302), the flow rate in the upstream cavity (301) is relatively faster than that in the downstream cavity (302), when the fly ash passes through the high-temperature resistant vibrating screen (8), the fly ash is crushed by the high-temperature resistant vibrating screen (8) and enters the downstream cavity (302), and when the fly ash enters the downstream cavity (302), the moving speed of the fly ash decreases and the diffusion effect increases; S6. After the fly ash is fully diffused in the downstream cavity (302), it enters the high-temperature pyrolysis assembly (4), and the high-temperature pyrolysis assembly (4) performs in-depth pyrolysis treatment on the fly ash to complete the whole process of fly ash pyrolysis.

Images