Waste incineration fly ash dechlorination device and dechlorination method

Abstract

The invention discloses a waste incineration fly ash dechlorination device and dechlorination method, and relates to the technical field of fly ash treatment.The device comprises a main body, a driving motor and an air cylinder are arranged above the main body, a flow guide cover is arranged in the main body, a sleeve is arranged above the flow guide cover, and a fly ash inlet pipe and a water inlet pipe are arranged on the flow guide cover; a stirrer and a turbulent flow assembly are arranged at the bottom end of the telescopic end of the air cylinder, the turbulent flow assembly comprises a circular plate, an electric push rod is arranged in the circular plate, and a supporting block is arranged at the telescopic end of the electric push rod. Fly ash and water are mixed between the flow guide cover and the stirrer, the fly ash is washed with water to remove chlorine, an electric push rod drives a supporting block to repeatedly extend and contract, upward water flow of the stirrer is disturbed through an elastic sleeve, and the mixing uniformity of the fly ash and the water is improved; the air cylinder drives the telescopic end to repeatedly and rapidly move up and down, pressurization in the sleeve is achieved, and attachments in the discharging opening are removed.

Description

Technical Field

[0001] The present invention relates to the technical field of fly ash treatment, and specifically to a device and method for removing chlorine from fly ash generated by waste incineration. Background Art

[0002] Fly ash generated after the incineration treatment of domestic waste belongs to hazardous waste. Therefore, fly ash from domestic waste incineration must be safely and properly treated. The disposal of fly ash follows the principles of harmlessness, reduction, and resource utilization. The treated fly ash residue is formulated with auxiliary materials such as domestic sewage sludge, construction waste, and other industrial solid wastes, and the dried material enters the high-value utilization equipment system of fly ash to fire foamed ceramics. The fired product is a semi-finished product of a foamed ceramic board, which is further processed into a finished product. Components such as calcium oxide, silicon oxide, and aluminum oxide in fly ash can enhance the strength and durability of ceramic products during the firing process. However, due to the high chloride ion content in fly ash, directly using it as a raw material for ceramic production will affect the quality of ceramic products.

[0003] Chinese Patent with application number CN2023210259619 discloses a fly ash water washing device, including a tank body, the upper end of the tank body is fixedly connected with a tank cover through bolts, an air inlet pipe is fixedly connected to the tank cover, a fly ash inlet is fixedly connected to the tank cover, a motor is arranged on the tank cover, the output end of the motor is rotatably connected to the tank cover, a water inlet pipe is fixedly connected to the tank cover, a return water pipe is arranged on the water inlet pipe, and a transmission rod is installed on the output end of the motor through bolts.

[0004] Chinese Patent with application number CN202110198505.3 discloses a continuous water washing and chlorine removal device for fly ash from waste incineration, including a chlorine removal device unit. The device unit includes a main body, a sleeve, a mixing area partition, a weir, a stirrer, a fly ash feed pipe, a cleaning liquid inlet pipe, and a slurry lift pipe. The device successively includes a vertical flow ash-water sedimentation area, an ash-water rising area, an ash-water mixing and chlorine removal area, and a slurry concentration area from top to bottom. Continuous fly ash cleaning, fly ash-ash water separation, and the transportation of slurry and wastewater are realized in one cleaning device. However, after the fly ash and water are transported to the main body, the uniformity of the mixture of fly ash and water cannot be improved, so the water washing and chlorine removal efficiency of fly ash and water cannot be improved.

[0005] In addition, during the transportation of ash water, more and more attachments will accumulate at the material dropping port, blocking the material dropping port, further affecting the sedimentation of ash water after passing through the material dropping port, reducing the chlorine removal water washing efficiency of fly ash. In addition, the fly ash after precipitation will deposit and adhere in the fly ash hopper, resulting in incomplete discharge of the fly ash in the fly ash hopper.

[0006] Therefore, a device and method for removing chlorine from fly ash generated by waste incineration are proposed to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to disclose a chlorine removal device and method for waste incineration fly ash, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above purpose, the present invention is realized through the following technical solutions: A chlorine removal device for waste incineration fly ash, including a main body, above which a driving motor and a cylinder are provided; A diversion cover is provided inside the main body, a sleeve is provided above the diversion cover, and a fly ash inlet pipe and a water inlet pipe are provided on the diversion cover; At the bottom end of the telescopic end of the cylinder, a stirrer and a flow disturbing component are provided. The flow disturbing component includes a circular plate, an electric push rod is provided inside the circular plate, a support block is provided at the telescopic end of the electric push rod, an elastic sleeve is provided between the circular plate and the support block, and a dragon blade is provided on the telescopic end of the cylinder; The bottom end of the main body is a fly ash hopper, a disturbance component is provided inside the fly ash hopper, a discharge pipe and a pressurization pipe are provided on one side of the fly ash hopper, the disturbance component includes a support bar, one end of the support bar is provided with a support seat, a vertical rod is movably connected to the middle of the support seat, a stirring blade is provided at the bottom end of the vertical rod, and a limiting component for the vertical rod is provided inside the support seat.

[0009] Optionally, a cover body is provided at the top of the main body, support legs are provided at the bottom of the main body, a mounting plate is provided at the top end of the driving motor, the end of the mounting plate away from the driving motor is fixedly connected to the main body, the fixed end of the cylinder is fixedly connected to the rotating shaft of the driving motor, and the telescopic end of the cylinder penetrates through the cover body, the sleeve and the diversion cover and is located inside the main body.

[0010] Optionally, a water outlet weir is provided at the top of the main body, a water gathering area is formed between the water outlet weir and the cover body, a drain pipe is provided on one side of the cover body, and a drain valve is provided on the drain pipe.

[0011] Optionally, the sleeve is fixedly connected to the main body, the top of the sleeve is closed, the longitudinal section of the middle part of the diversion cover is trapezoidal, the top end of the diversion cover is located below the inside of the sleeve, the cross section of the bottom end of the diversion cover is annular, the flow disturbing component is located above the stirrer, the dragon blade is located at the position corresponding to the top end of the diversion cover, a material falling port is formed between the diversion cover and the sleeve, a flow sensor is provided below the material falling port, and a precipitation outlet is formed between the diversion cover and the main body.

[0012] Optionally, the top ends of the fly ash inlet pipe and the water inlet pipe both penetrate through the cover body and are located above the cover body, control valves are provided on the fly ash inlet pipe and the water inlet pipe, and the diameter of the circular plate is smaller than that of the stirrer.

[0013] Optionally, a plurality of electric push rods are provided, and the included angle between two adjacent electric push rods is equal. The disturbance assembly is located inside the top of the fly ash hopper. The discharge pipe and the pressurizing pipe are arranged on one side of the bottom of the fly ash hopper. The pressurizing pipe is located above the discharge pipe, and a solenoid valve is provided on the pressurizing pipe.

[0014] Optionally, a plurality of stirring blades are provided. The plurality of stirring blades are arranged in an array with the middle part of the vertical rod as the center of the circle, and the outer sides of the stirring blades are correspondingly matched with the inner side of the bottom of the fly ash hopper.

[0015] Optionally, the limiting assembly includes a clamping groove provided in the middle of the support seat and a protrusion located on the vertical rod. A contraction groove is opened at the bottom of the clamping groove. A spring is provided inside the contraction groove. One end of the spring is provided with a telescopic rod, and a limiting head is provided at one end of the telescopic rod. A protrusion is provided on the vertical rod, and the protrusion is correspondingly matched with the limiting head. The contact area between the protrusion and the limiting head is in a smooth curved surface shape, and the contact area between the limiting head and the protrusion is in a smooth curved surface shape.

[0016] Optionally, a sludge pump and a sewage discharge valve are provided on the discharge pipe, and a docking head is provided at the top of the vertical rod. A locking mechanism is provided inside the docking head.

[0017] The present invention also provides a method for removing chlorine from fly ash of waste incineration. The chlorine removal method uses the above-mentioned chlorine removal device to remove chlorine from fly ash, and includes the following steps: S1. After the driving motor is started, the fly ash entering the main body through the fly ash inlet pipe is mixed between the flow guide cover and the stirrer. The water flow generated by the rotation of the stirrer is disturbed by the turbulence component. Driven by the dragon blade, the ash water is concentrated upward. S2. The ash water passing through the flow guide cover precipitates between the flow guide cover and the main body. The precipitated fly ash falls to the fly ash hopper to gather. During this process, the stirrer drives the turbulence component to rotate, so that the precipitated fly ash is evenly distributed in the fly ash hopper. S3. The fly ash in the fly ash hopper is discharged outward by using the discharge pipe. When discharging the fly ash outward, the turbulence component approaches the fly ash hopper driven by the cylinder. When the turbulence component moves down to the bottom, the turbulence component expands and closes the top of the fly ash hopper, avoiding the diffusion of fly ash into the water body at the top of the main body when the fly ash is discharged outward. S4. During the downward movement of the turbulence component, the downward movement of the telescopic end of the cylinder can be docked and locked with the vertical rod. When the turbulence component moves down to the bottom, the vertical rod breaks through the limit of the limiting component and synchronously moves down to fit with the inner wall of the fly ash hopper, using the stirring blade to prevent the fly ash from depositing and sticking in the fly ash hopper. S5. After the fly ash is dechlorinated, it gathers in the fly ash hopper and is discharged outward through the discharge pipe. After further treatment, fly ash slag is obtained. The treated fly ash slag is mixed with other auxiliary materials according to the formula, and a comprehensive auxiliary agent is added to mix the mixture. After filter pressing, drying, granulation, secondary drying, aging, drying, it is fired into foamed ceramic semi-finished products, and then further processed into finished ceramic panels.

[0018] Technical effects and advantages of the present invention: 1. In the present invention, fly ash and water are mixed between the guide cover and the agitator, and the fly ash is washed and dechlorinated. During this process, the electric push rod drives the support block to extend and contract repeatedly, and the elastic sleeve is synchronously controlled to extend and contract repeatedly. The elastic sleeve is used to disturb the upward water flow of the agitator, thereby improving the uniformity of the mixing of fly ash and water and accelerating the dechlorination efficiency of the fly ash.

[0019] 2. The present invention seals the bottom of the air guide cover by expanding the spoiler assembly and cooperating with the cylinder. The telescopic end is driven by the cylinder to move up and down repeatedly and rapidly, thereby increasing the pressure in the sleeve, squeezing the attachments in the blanking port into the sedimentation area between the air guide cover and the main body, and clearing the blanking port.

[0020] 3. When the settled fly ash is cleaned, the cylinder drives the telescopic end to extend continuously, the telescopic end of the cylinder is docked and locked with the docking joint, the vertical rod is separated from the limiting assembly, the stirring blade moves down to the bottom and fits the inner wall of the fly ash hopper, and the spoiler assembly expands again. At this time, the discharge pipe discharges the fly ash in the fly ash hopper, and the diffusion of the fly ash is prevented by the barrier effect of the elastic sleeve. At the same time, the stirring blade is used to scrape off the adhesion deposited at the bottom of the fly ash hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a top view structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure along the AA section line; Figure 4 is a schematic diagram of the internal structure of the spoiler assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the disturbance component of the present invention.

[0022] In the figure: 1. Main body; 101. Cover body; 102. Support leg; 104. Discharge pipe; 105. Booster pipe; 106. Water outlet weir; 107. Water collection area; 108. Drain pipe; 109. Fly ash hopper; 2. Driving motor; 3. Cylinder; 301. Stirrer; 302. Screw blade; 4. Deflector; 401. Fly ash inlet pipe; 402. Water inlet pipe; 403. Precipitation outlet; 5. Sleeve; 501. Feeding port; 6. Turbulence component; 601. Circular plate; 602. Electric push rod; 603. Support block; 604. Elastic sleeve; 7. Disturbance component; 701. Support bar; 702. Support seat; 703. Vertical rod; 7031. Protrusion; 704. Stirring blade; 705. Card slot; 7051. Spring; 7052. Expansion rod; 7053. Limit head; 706. Docking head. Specific implementation mode

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0024] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0025] Embodiment 1 Please refer to Figures 1-5 , this embodiment discloses a garbage incineration fly ash dechlorination device and dechlorination method, including a main body 1, support legs 102 are arranged at the bottom of the main body 1, a cover body 101 is arranged at the top of the main body 1, a water outlet weir 106 is arranged at the top of the main body 1, a water collection area 107 is formed between the water outlet weir 106 and the cover body 101, a drain pipe 108 is arranged on one side of the cover body 101, a drain valve is arranged on the drain pipe 108, a driving motor 2 and a cylinder 3 are arranged above the main body 1, a mounting plate is arranged at the top end of the driving motor 2, one end of the mounting plate away from the driving motor 2 is fixedly connected to the main body 1, the fixed end of the cylinder 3 is fixedly connected to the rotating shaft of the driving motor 2, a deflector 4 is arranged inside the main body 1, a precipitation outlet 403 is formed between the deflector 4 and the main body 1, a sleeve 5 is arranged above the deflector 4, a feeding port 501 is formed between the deflector 4 and the sleeve 5, the telescopic end of the cylinder 3 penetrates through the cover body 101, the sleeve 5 and the deflector 4 and is located inside the main body 1, the sleeve 5 is fixedly connected to the main body 1, the top of the sleeve 5 is closed, the middle longitudinal section of the deflector 4 is trapezoidal, the top end of the deflector 4 is located below the inside of the sleeve 5, and the bottom cross section of the deflector 4 is annular.

[0026] The deflector 4 is provided with a fly ash inlet pipe 401 and a water inlet pipe 402. The tops of the fly ash inlet pipe 401 and the water inlet pipe 402 both penetrate through the cover body 101 and are located above the cover body 101. Control valves are provided on the fly ash inlet pipe 401 and the water inlet pipe 402.

[0027] At the bottom end of the telescopic end of the cylinder 3, there is a stirrer 301 and a flow disturbing component 6. The flow disturbing component 6 is located above the stirrer 301. Fly ash is transported between the deflector 4 and the stirrer 301 through the fly ash inlet pipe 401, and water is transported between the deflector 4 and the stirrer 301 through the water inlet pipe 402.

[0028] The flow disturbing component 6 includes a circular plate 601. Inside the circular plate 601, there is an electric push rod 602. The electric push rod 602 is a multi-section electric push rod. At the telescopic end of the electric push rod 602, there is a support block 603. An elastic sleeve 604 is provided between the circular plate 601 and the support block 603. The expansion area of the elastic sleeve 604 is controlled by the cooperation of the electric push rod 602 and the support block 603. The elastic sleeve 604 is made of water-proof material. On the telescopic end of the cylinder 3, there is a dragon blade 302. The diameter of the dragon blade 302 is smaller than the diameter of the top end of the deflector 4. There is a gap between the dragon blade 302 and the top end of the deflector 4. The dragon blade 302 is located at the position corresponding to the top end of the deflector 4. The dechlorinated ash water is transported upward by the dragon blade 302.

[0029] The diameter of the circular plate 601 is smaller than that of the stirrer 301. There are multiple electric push rods 602, and the included angle between adjacent two electric push rods 602 is equal. After the multiple electric push rods 602 contract, it does not affect the mixing of fly ash and water by the stirrer 301. The expanded elastic sleeve 604 cooperates with the bottom end of the deflector 4 through the electric push rod 602.

[0030] The bottom end of the main body 1 is set as a fly ash hopper 109. Inside the fly ash hopper 109, there is a disturbing component 7. The disturbing component 7 is located on the inner side of the top of the fly ash hopper 109. On one side of the fly ash hopper 109, there is a discharge pipe 104. A sludge pump and a sewage discharge valve are provided on the discharge pipe 104. The disturbing component 7 includes a support bar 701. At one end of the support bar 701, there is a support seat 702. The middle part of the support seat 702 is movably connected with a vertical rod 703. At the bottom end of the vertical rod 703, there is a stirring blade 704. Inside the support seat 702, there is a limiting component for the vertical rod 703. There are multiple stirring blades 704, and the multiple stirring blades 704 are arranged in an array with the middle part of the vertical rod 703 as the center. The outer side of the stirring blade 704 corresponds to and cooperates with the inner side of the bottom of the fly ash hopper 109. When the stirrer 301 rotates to drive the water flow, the stirring blade 704 rotates slowly.

[0031] In use, fly ash and water are continuously conveyed into the main body 1 through the fly ash inlet pipe 401 and the water inlet pipe 402 respectively. The fly ash entering the main body 1 is mixed between the guide cover 4 and the stirrer 301 to remove chlorine from the fly ash. Initially, the electric push rod 602 is in a contracted state to reduce the obstruction to the upward water flow of the stirrer 301. Driven by the drive motor 2, the cylinder 3 drives the stirrer 301 and the auger blade 302 to rotate. A lock is provided between the fixed end and the telescopic end of the cylinder 3, and the limiting effect of the lock is used to make the fixed end and the telescopic end of the cylinder 3 rotate synchronously. The telescopic end of the cylinder 3 can withstand the torque when the drive motor 2 rotates.

[0032] When removing chlorine from fly ash, the stirrer 301 mixes the fly ash with water for chlorine removal by washing. During this process, the electric push rod 602 drives the support block 603 to extend and contract repeatedly over a short distance. The elastic sleeve 604 extends and contracts repeatedly synchronously under the drive of the support block 603, and the elastic sleeve 604 is used to disturb the upward water flow of the stirrer 301 to improve the uniformity of the mixing of fly ash and water. Among them, the expansion and contraction amplitude of the support block 603 does not affect the upward water flow of the stirrer 301.

[0033] The ash water after chlorine removal is conveyed upward by the auger blade 302 and gathers in the upper middle part under the guidance of the inclined plane inside the guide cover 4, so that the ash water continuously enters the inside of the sleeve 5 through the top of the guide cover 4, and then enters the sedimentation area between the guide cover 4 and the main body 1 through the feeding port 501. After the fly ash precipitates and accumulates here, under the influence of gravity, it falls and accumulates in the direction of the fly ash hopper 109 through the sedimentation outlet 403. The bottom of the sedimentation area is the fly ash accumulation area, and the top of the sedimentation area is the clear water area. The clear water in the clear water area continuously overflows to the water gathering area 107 through the water outlet weir 106, and the clear water in the water gathering area 107 is discharged and collected outward through the drain pipe 108.

[0034] During the process of the fly ash precipitating and falling, the vertical rod 703 and the stirring blade 704 are kept at a specific horizontal height under the limiting action of the support bar 701 and the support seat 702. The stirring blade 704 rotates along with the water flow driven by the stirrer 301 for the water flow. The rotation speed of the stirring blade 704 is slower than that of the stirrer 301. Through the slow rotation of the stirring blade 704, when the fly ash falls onto the stirring blade 704, it can avoid scattering the fly ash, and at the same time, through the disturbance of the fly ash, the fly ash is more evenly distributed in the fly ash hopper 109. After chlorine removal, the chloride ion content in the fly ash meets the chloride ion content requirements for ceramic production raw materials. When the fly ash of this batch is completely dechlorinated and accumulates in the fly ash hopper 109, the deposited fly ash in the fly ash hopper 109 is discharged outward through the discharge pipe 104, and through further treatment, fly ash slag is obtained.

[0035] It should be noted that when the vertical rod 703 is locked and fixed to the telescopic end of the cylinder 3, the rotation speed of the stirring blade 704 and the vertical rod 703 is relatively fast. At this time, when the fly ash falls to the position of the stirring blade 704, the stirring blade 704 will re-disperse the fly ash, resulting in an impact on the aggregation efficiency of the fly ash into the fly ash hopper 109. Therefore, the rotation of the stirrer 301 drives the rotation of the stirring blade 704 and the vertical rod 703 through the water flow, rather than directly connecting to the telescopic end of the cylinder 3.

[0036] The treated fly ash slag is proportioned with auxiliary materials such as domestic sewage sludge, construction waste, and other industrial solid wastes according to the formula. After proportioning, it is wet-ground by a ball mill. The milled material is subjected to hydrocyclone classification. The obtained coarse particle size is returned to the ball mill to form a closed-circuit grinding, and the obtained qualified particle size is added with a comprehensive additive and mixed again.

[0037] After mixing, the comprehensive material is further mixed and adjusted. The adjusted material is filtered by a filter press to control the moisture content of the material below 28%. The water obtained from the filtration is returned to the ball mill as supplementary water for wet grinding. The filter residue obtained from the filtration enters low-temperature drying. The drying temperature of the material is controlled below 230°C (the hot air temperature of the hot blast stove is controlled below 400°C). The moisture content of the dried material is 10%-12%. Subsequently, the material enters a granulator for granulation. During the granulation process, there is about 2%-3% of spray water. After granulation, a drying chain grate is used for secondary low-temperature drying.

[0038] The flue gas generated from the above two low-temperature drying processes enters the gas treatment device after bag dust removal and is discharged up to standard. The dried material enters the aging bin for aging for 4-7 days. The aged material enters the automatic feeding system for feeding. After feeding, it enters the drying kiln for drying using waste heat to control the moisture content below 2%-3%. The dried material enters the fly ash high-value utilization equipment system to fire foamed ceramics. The fired product is a semi-finished product of a foamed ceramic board. After cutting and processing, it enters the finished product warehouse or undergoes further deep processing to obtain the finished ceramic board.

[0039] Embodiment 2 Please refer to Figures 1-5 As shown, in actual use, when the fly ash passes through the feed opening 501, it will adhere to the inner wall of the sleeve 5 and the outer wall of the guide cover 4, blocking the feed opening 501. The accumulation of fly ash attachments in the feed opening 501 will hinder the ash water from entering the sedimentation area through the feed opening 501 for sedimentation. To address this, the following embodiments are provided for solution: A flow sensor is provided below the feed opening 501 to detect whether a water flow blockage is formed at the feed opening 501.

[0040] A pressurizing pipe 105 is provided on one side of the fly ash hopper 109. The pressurizing pipe 105 is provided at the bottom side of the fly ash hopper 109. The pressurizing pipe 105 is located above the discharge pipe 104, and an electromagnetic valve is provided on the pressurizing pipe 105.

[0041] The limiting assembly includes a slot 705 arranged in the middle of the support seat 702 and a protrusion 7031 located on the vertical rod 703. A contraction groove is provided at the bottom of the slot 705. A spring 7051 is provided inside the contraction groove. A telescopic rod 7052 is provided at one end of the spring 7051. A limiting head 7053 is provided at one end of the telescopic rod 7052. A protrusion 7031 is provided on the vertical rod 703. The protrusion 7031 corresponds to the limiting head 7053. The contact area between the protrusion 7031 and the limiting head 7053 is in the shape of a smooth curved surface, and the contact area between the limiting head 7053 and the protrusion 7031 is in the shape of a smooth curved surface.

[0042] A docking joint 706 is provided at the top of the vertical rod 703, and a locking mechanism is provided inside the docking joint 706, through which the vertical rod 703 and the telescopic end of the cylinder 3 are fixed to each other.

[0043] During use, a flow threshold Q1 is preset in the flow sensor. When the flow sensor detects that the water flow rate passing through the drop port 501 is lower than the threshold Q1, it means that the drop port 501 is blocked and affects the gray water from passing through the drop port 501 into the sedimentation area. At this time, the fly ash inlet pipe 401 and the water inlet pipe 402 are first closed by the control valve, and the drive motor 2 remains closed. Then, the telescopic end of the cylinder 3 retracts to move the spoiler assembly 6 to a position corresponding to the bottom of the air deflector 4. At this time, the electric push rod 602 drives the support block 603 to expand outward, so that the outer side of the support block 603 fits with the inner wall of the air deflector 4. The elastic sleeve 604 is synchronously expanded outward and fits with the inner wall of the air deflector 4 under the drive of the support block 603, forming a closure on the bottom of the air deflector 4, and then the telescopic end of the cylinder 3 continues to be driven by the cylinder 3. The telescopic end repeatedly and rapidly moves up and down. When the telescopic end moves upward, the expanded elastic sleeve 604 will push the water above into the sleeve 5 through the gap between the dragon blade 302 and the top of the fairing 4, so as to prevent the dragon blade 302 from affecting the elastic sleeve 604 to push the water flow upward, thereby increasing the pressure in the sleeve 5, thereby increasing the pressure of the water flow through the sleeve 5 through the drop port 501. The distances of the elastic sleeve 604 moving up and down are equal, and the distance of the elastic sleeve 604 moving upward is gradually increased, so that in the process of the elastic sleeve 604 repeatedly moving up and down, the attachments in the drop port 501 are gradually squeezed into the sedimentation area between the fairing 4 and the main body 1. When the elastic sleeve 604 moves upward to drive the water flow through the drop port 501 to be higher than the threshold value Q1, it indicates that the drop port 501 is cleared.

[0044] Subsequently, the telescopic end is driven by the cylinder 3 to extend and reset. At the same time, the electric push rod 602 drives the support block 603 and the elastic sleeve 604 to contract and reset. Then, the control valve opens the fly ash inlet pipe 401 and the water inlet pipe 402 to restart the transportation of fly ash and water into the main body 1. At the same time, the driving motor 2 is started, and the driving motor 2 continues to drive the stirrer 301 and the auger blade 302 to rotate through the cylinder 3 to wash and dechlorinate the fly ash and continuously convey the fly ash upward.

[0045] In addition, more and more precipitated fly ash accumulates inside the fly ash hopper 109. The fly ash at the bottom of the fly ash hopper 109 forms adhesion at the bottom of the fly ash hopper 109, resulting in incomplete discharge of the fly ash in the fly ash hopper 109. To solve this problem, the following embodiments are provided: During use, when the dechlorination of this batch of fly ash is completed and all the fly ash has gathered in the fly ash hopper 109, the control valve keeps the fly ash inlet pipe 401 and the water inlet pipe 402 closed, and the driving motor 2 is turned off. Then, the telescopic end is continuously extended by driving the cylinder 3 so that the telescopic end of the cylinder 3 is docked with the docking head 706. The locking mechanism in the docking head 706 is locked and fixed with the telescopic end of the cylinder 3, and the locking mechanism is an electromagnetic plug.

[0046] Subsequently, the telescopic end of the cylinder 3 continues to extend, causing the protrusion 7031 to squeeze the limit head 7053 and shrink the spring 7051. The protrusion 7031 disengages from the card slot 705. The telescopic end of the cylinder 3 continues to extend, causing the stirring blade 704 to move down to fit against the inner wall of the fly ash hopper 109. At the same time, the electric push rod 602 drives the support block 603 and the elastic sleeve 604 to expand outwards. At this time, there is a space between the elastic sleeve 604 and the top of the fly ash. The agitator 301 is located in the space between the elastic sleeve 604 and the top of the fly ash. The bottom end of the discharge pipe 104 corresponds to the middle of the fly ash. By opening the sludge pump and the sewage discharge valve on the discharge pipe 104, the discharge of the fly ash in the fly ash hopper 109 is started. Under the blocking effect of the elastic sleeve 604, the diffusion of the fly ash upwards when discharging is avoided. During the discharge of the fly ash, the solenoid valve on the pressurizing pipe 105 opens the pressurizing pipe 105, and the pressurized gas is continuously replenished into the fly ash hopper 109 through the pressurizing pipe 105 to maintain the pressure balance in the fly ash hopper 109. At the same time, the drive motor 2 is started again. The drive motor 2 drives the agitator 301 and the stirring blade 704 to rotate slowly. The stirring blade 704 is used to scrape off the adhesives deposited at the bottom of the fly ash hopper 109. At the same time, the agitator 301 is used to slowly disturb the fly ash in the fly ash hopper 109 to improve the fluidity of the fly ash, reduce the discharge pressure through the discharge pipe 104, and facilitate the rapid discharge of the fly ash. After the fly ash in the fly ash hopper 109 is completely discharged, the electric push rod 602 drives the support block 603 and the elastic sleeve 604 to contract and reset. At the same time, the cylinder 3 drives the stirring blade 704 to move up and reset, causing the protrusion 7031 to enter the card slot 705 after squeezing the spring 7051 through the limit head 7053 and the telescopic rod 7052. Then, the locking mechanism in the joint 706 releases the locking of the telescopic end of the cylinder 3. Then, the cylinder 3 continues to drive the agitator 301 and the turbulence generating assembly 6 to move up and reset for the next use.

[0047] Embodiment III A method for removing chlorine from fly ash in waste incineration. The chlorine removal method uses the above chlorine removal device to remove chlorine from fly ash, including the following steps: S1. After the drive motor 2 is started, the fly ash entering the main body 1 through the fly ash inlet pipe 401 is mixed between the flow guide cover 4 and the agitator 301. The water flow generated by the rotation of the agitator 301 is disturbed by the turbulence generating assembly 6 to improve the mixing and reaction efficiency of the fly ash and water between the flow guide cover 4 and the agitator 301. Driven by the auger blade 302, the ash water is concentrated upwards.

[0048] S2. The ash water passing through the flow guide cover 4 precipitates between the flow guide cover 4 and the main body 1. The precipitated fly ash falls to the fly ash hopper 109 and accumulates. During this process, the agitator 301 drives the disturbance assembly 7 to rotate, so that the precipitated fly ash is evenly distributed in the fly ash hopper 109.

[0049] S3. The fly ash in the fly ash hopper 109 is discharged outward through the fly ash utilization discharge pipe 104. When discharging the fly ash outward, the flow disturbance component 6 approaches the fly ash hopper 109 driven by the air cylinder 3. When the flow disturbance component 6 moves down to the bottom, the flow disturbance component 6 expands and closes the top of the fly ash hopper 109, avoiding the diffusion of fly ash into the water body at the top of the main body 1 when the fly ash is discharged outward.

[0050] S4. During the downward movement of the flow disturbance component 6, the downward movement of the telescopic end of the air cylinder 3 can be docked and locked with the vertical rod 703. When the flow disturbance component 6 moves down to the bottom, the vertical rod 703 breaks through the limit of the limit component and synchronously moves down to fit with the inner wall of the fly ash hopper 109, using the stirring blades 704 to prevent the fly ash from depositing and adhering in the fly ash hopper 109.

[0051] S5. After the chlorine removal of this batch of fly ash is completed, it accumulates in the fly ash hopper 109 and is discharged outward through the discharge pipe 104. After further treatment, fly ash slag is obtained. The treated fly ash slag and other auxiliary materials are proportioned according to the formula, and a comprehensive auxiliary agent is added for mixing and blending. Then, through pressure filtration, drying, granulation, secondary drying, aging, and drying, it is fired into a semi-finished foamed ceramic product, and then further processed into a finished ceramic plate.

[0052] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the related technical field, shall be equally included in the patent protection scope of the present invention.

Claims

1. A chlorine removal device for municipal solid waste incineration fly ash, comprising a main body (1), characterized in that: Above the main body (1), there is a driving motor (2) and a cylinder (3); Inside the main body (1), there is a flow guide cover (4). Above the flow guide cover (4), there is a sleeve (5). On the flow guide cover (4), there are a fly ash inlet pipe (401) and a water inlet pipe (402); At the bottom end of the telescopic end of the cylinder (3), there is a stirrer (301) and a flow disturbing component (6). The flow disturbing component (6) includes a circular plate (601). Inside the circular plate (601), there is an electric push rod (602). At the telescopic end of the electric push rod (602), there is a support block (603). Between the circular plate (601) and the support block (603), there is an elastic sleeve (604). On the telescopic end of the cylinder (3), there is a screw blade (302); At the bottom end of the main body (1), there is a fly ash hopper (109). Inside the fly ash hopper (109), there is a disturbing component (7). On one side of the fly ash hopper (109), there are a discharge pipe (104) and a pressurizing pipe (105). The disturbing component (7) includes a support bar (701). At one end of the support bar (701), there is a support seat (702). In the middle of the support seat (702), there is a vertical rod (703) movably connected. At the bottom end of the vertical rod (703), there is a stirring blade (704). Inside the support seat (702), there is a limiting component for the vertical rod (703).

2. The chlorine removal device for waste incineration fly ash according to claim 1, characterized in that: At the top of the main body (1), there is a cover body (101). At the bottom of the main body (1), there are support legs (102). At the top end of the driving motor (2), there is a mounting plate. The end of the mounting plate far from the driving motor (2) is fixedly connected to the main body (1). The fixed end of the cylinder (3) is fixedly connected to the rotating shaft of the driving motor (2). The telescopic end of the cylinder (3) penetrates through the cover body (101), the sleeve (5) and the flow guide cover (4) and is located inside the main body (1).

3. The chlorine removal device for incineration fly ash according to claim 1, characterized in that: At the top of the main body (1), there is a water outlet weir (106). Between the water outlet weir (106) and the cover body (101), there is a water gathering area (107). On one side of the cover body (101), there is a drain pipe (108). On the drain pipe (108), there is a drain valve.

4. The chlorine removal device for incineration fly ash of garbage according to claim 1, wherein: The sleeve (5) is fixedly connected to the main body (1). The top of the sleeve (5) is closed. The middle longitudinal section of the flow guide cover (4) is in a trapezoidal structure. The top end of the flow guide cover (4) is located below the inside of the sleeve (5). The bottom cross section of the flow guide cover (4) is in an annular structure. The flow disturbing component (6) is located above the stirrer (301). The screw blade (302) is located at a position corresponding to the top end of the flow guide cover (4). Between the flow guide cover (4) and the sleeve (5), there is a material falling opening (501). Below the material falling opening (501), there is a flow sensor. Between the flow guide cover (4) and the main body (1), there is a precipitation outlet (403).

5. The chlorine removal device for waste incineration fly ash according to claim 1, characterized in that: The tops of the fly ash inlet pipe (401) and the water inlet pipe (402) penetrate through the cover body (101) and are located above the cover body (101). Control valves are provided on the fly ash inlet pipe (401) and the water inlet pipe (402). The diameter of the circular plate (601) is smaller than that of the stirrer (301).

6. The chlorine removal device for incineration fly ash of garbage according to claim 1, wherein: A plurality of electric push rods (602) are provided, and the included angle between adjacent two electric push rods (602) is equal. The disturbance assembly (7) is located inside the top of the fly ash hopper (109). The discharge pipe (104) and the pressurization pipe (105) are provided on one side of the bottom of the fly ash hopper (109). The pressurization pipe (105) is located above the discharge pipe (104). An electromagnetic valve is provided on the pressurization pipe (105).

7. The chlorine removal device for incineration fly ash of garbage according to claim 1, wherein: A plurality of stirring blades (704) are provided, and the plurality of stirring blades (704) are arranged in an array with the middle part of the vertical rod (703) as the center of the circle. The outer side of the stirring blade (704) is correspondingly matched with the inner side of the bottom of the fly ash hopper (109).

8. The chlorine removal device for incineration fly ash of garbage according to claim 1, wherein: The limiting assembly includes a clamping groove (705) provided in the middle of the support seat (702) and a protrusion (7031) located on the vertical rod (703). A contraction groove is opened at the bottom of the clamping groove (705). A spring (7051) is provided inside the contraction groove. One end of the spring (7051) is provided with a telescopic rod (7052). One end of the telescopic rod (7052) is provided with a limiting head (7053). A protrusion (7031) is provided on the vertical rod (703). The protrusion (7031) is correspondingly matched with the limiting head (7053). The contact area between the protrusion (7031) and the limiting head (7053) is in a smooth curved surface shape. The contact area between the limiting head (7053) and the protrusion (7031) is in a smooth curved surface shape.

9. The chlorine removal device for incineration fly ash of garbage according to claim 1, characterized in that: A sludge pump and a sewage discharge valve are provided on the discharge pipe (104). A docking head (706) is provided at the top of the vertical rod (703). A locking mechanism is provided inside the docking head (706).

10. A method for removing chlorine from fly ash of waste incineration, wherein the chlorine removal method uses the chlorine removal device as described in claim 1 to remove chlorine from fly ash, and is characterized in that, It includes the following steps: S1. After the driving motor (2) is started, the fly ash entering the main body (1) through the fly ash inlet pipe (401) is mixed between the flow guide cover (4) and the stirrer (301). The water flow generated by the rotation of the stirrer (301) is disturbed by the flow disturbing assembly (6). Driven by the dragon blade (302), the ash water is concentrated upward. S2. The ash water passing through the flow guide cover (4) precipitates between the flow guide cover (4) and the main body (1). The precipitated fly ash falls to the fly ash hopper (109) to gather. During this process, the stirrer (301) drives the disturbance assembly (7) to rotate, so that the precipitated fly ash is evenly distributed in the fly ash hopper (109). S3. The fly ash in the fly ash hopper (109) is discharged outward by using the discharge pipe (104). When discharging the fly ash outward, the flow disturbing assembly (6) approaches the fly ash hopper (109) driven by the cylinder (3). When the flow disturbing assembly (6) moves down to the bottom, the flow disturbing assembly (6) expands and closes the top of the fly ash hopper (109), preventing the fly ash from diffusing into the water body at the top of the main body (1) when the fly ash is discharged outward. S4. During the downward movement of the spoiler assembly (6), the downward movement of the telescopic end of the cylinder (3) can be docked and locked with the vertical rod (703). When the spoiler assembly (6) moves down to the bottom, the vertical rod (703) breaks through the limit of the limit assembly and synchronously moves down to fit against the inner wall of the fly ash hopper (109). The stirring blade (704) is used to prevent fly ash from depositing and sticking in the fly ash hopper (109). S5. After the fly ash is dechlorinated, it accumulates in the fly ash hopper (109) and is discharged outward through the discharge pipe (104). After further treatment, fly ash slag is obtained. The treated fly ash slag is formulated with other auxiliary materials according to the formula, and a comprehensive auxiliary agent is added for mixing and blending. Then, through pressure filtration, drying, granulation, secondary drying, aging, and drying, it is fired into a semi-finished foamed ceramic product, and then processed into a finished ceramic plate product.

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