Water washing desalination treatment device for solid waste incineration fly ash

Abstract

The invention discloses a washing desalination treatment device for solid waste incineration fly ash, and relates to the technical field of combustion product treatment. Comprising a fly ash water-washing desalting pond arranged on the ground in a plant and a water-washing desalting mechanism connected in the plant, the washing desalting mechanism comprises a cage type elution supporting top plate and a cage type elution supporting bottom plate, and a plurality of vertically extending cage type elution supporting vertical rods are fixed between the cage type elution supporting top plate and the cage type elution supporting bottom plate; a plurality of filter cloth constraint arc-shaped plates are fixed between the outer side edges of the cage type elution supporting top plate and the cage type elution supporting bottom plate, and annular washing desalting filter cloth is fixed between the cage type elution supporting top plate and the cage type elution supporting bottom plate; according to the device, salt such as chlorine salt and sulfate in the solid waste incineration fly ash can be efficiently desalted, the chlorine content in the solid waste incineration fly ash is reduced to a lower level, and it is ensured that the treated solid waste incineration fly ash meets the standard requirement of subsequent treatment or utilization.

Description

Technical Field

[0001] The invention relates to the technical field of combustion product treatment, in particular to a water washing and desalination treatment device for solid waste incineration fly ash. Background Art

[0002] Fly ash from the incineration of domestic waste is a powdery substance with a light bulk density and fine particle size, which is mainly collected in flue gas ducts, flue gas purification devices, cyclone separators and bag filters during the process of incineration of domestic waste for power generation. With the continuous improvement of the flue gas purification level, the flue gas discharged into the atmosphere is becoming cleaner, and the composition of fine particles (fly ash) intercepted and captured by the purification system is becoming more and more complex. The main hazardous substances in fly ash include organic pollutants such as benzopyrene, benzanthracene, dioxins, and heavy metals such as Cr, Cd, Hg, Pb, Cu, and Ni. In addition, it also contains soluble salts such as NaCl and KCl, as well as components such as CaO, SiO2, and Al2O3 that are similar to cement clinker.

[0003] The main function of the fly ash washing system is to separate the potassium, sodium, sulfur, chlorine and other ions in the fly ash through a water washing process to meet the requirements for the fly ash entering the kiln. However, the current fly ash washing system still has certain shortcomings in terms of treatment efficiency and treatment effect, and needs further improvement and optimization. Summary of the invention

[0004] The object of the present invention is to provide a water washing and desalination treatment device for solid waste incineration fly ash, which can more efficiently wash out the salt in the solid waste incineration fly ash.

[0005] To achieve the above object, the present invention provides the following technical solutions: A water washing and desalination treatment device for solid waste incineration fly ash, comprising a fly ash water washing and desalination pool arranged on the ground in a factory building, and a water washing and desalination mechanism connected to the factory building and located above the fly ash water washing and desalination pool; A washing and desalting water inlet pipe and a washing and desalting water outlet pipe connected to the inside of the fly ash washing and desalting pool are fixed on the outside of the pool; The water washing and desalting mechanism comprises a cage-type elution support top plate and a cage-type elution support bottom plate, and a plurality of vertically extending cage-type elution support vertical rods are fixed between the cage-type elution support top plate and the cage-type elution support bottom plate; A plurality of filter cloths are fixed between the outer edges of the cage-type elution support top plate and the cage-type elution support bottom plate to constrain the arc-shaped plate, and an annular water washing and desalting filter cloth is fixed between the cage-type elution support top plate and the cage-type elution support bottom plate; The water-washing and desalting filter cloth is located inside a plurality of filter cloth-constraining arc plates, and the water-washing and desalting filter cloth surrounds a plurality of cage-type washing support vertical rods; A fly ash water washing chamber is formed between the lower side of the cage type elution support top plate, the top of the cage type elution support bottom plate and the inner side of the water washing desalination filter cloth; An initial fly ash input pipe connected to the fly ash water washing chamber is fixed on the top plate of the cage-type elution support.

[0006] Preferably, an elution stirring mechanism is provided on the cage-type elution support top plate, and a vertically penetrating stirring shaft connecting hole is provided on the cage-type elution support top plate. The elution stirring mechanism comprises an elution stirring driving shaft rotatably connected to the stirring shaft connecting hole, and a plurality of fly ash water washing stirring short rods are fixed to one end of the elution stirring driving shaft in the fly ash water washing chamber; An elution stirring drive accommodating shell is fixed on the top of the cage-type elution support top plate, the top of the elution stirring drive shaft extends into the elution stirring drive accommodating shell, and an elution stirring drive motor for driving the elution stirring drive shaft to rotate is fixed in the elution stirring drive accommodating shell.

[0007] Description: The solid waste incineration fly ash in the fly ash washing chamber is fully stirred by the elution stirring mechanism, so that the salt in the solid waste incineration fly ash is fully dissolved in the clean water.

[0008] Preferably, an ash discharge mechanism is provided on the cage-type elution support bottom plate, the cage-type elution support bottom plate has a vertically penetrating ash discharge through hole, and the ash discharge mechanism includes an ash discharge guide cone shell fixed in the ash discharge through hole and having an inverted cone shape; The lower end of the cage-type washing support bottom plate is rotatably connected with an ash discharge control ring, an inverted cone-shaped ash discharge control cone shell is fixed inside the ash discharge control ring, and the ash discharge control cone shell is rotatably sleeved on the outer side of the ash discharge guide cone shell; The side wall of the ash discharge guide cone shell is provided with a plurality of ash discharge perforations, and the side wall of the ash discharge control cone shell is provided with a plurality of ash discharge matching holes; A plurality of vertically extending ash discharge guide pipes are fixed outside the fly ash washing and desalting pool, and an ash discharge temporary storage box with an opening facing upward is fixed on the ground in the factory building and below the ash discharge guide pipes.

[0009] Note: By controlling the opening and closing of the ash discharge mechanism, the washed solid waste incineration fly ash can be discharged from the ash discharge mechanism.

[0010] Preferably, an elution lifting mechanism is provided on the top of the water washing and desalting mechanism, and the elution lifting mechanism comprises an elution lifting fixed cylinder connected to the inner wall of the plant and with an opening facing downward, an elution lifting sliding cylinder with an opening facing upward is slidably connected inside the elution lifting fixed cylinder, an elution lifting connecting frame is fixed on the top of the cage-type elution support top plate, and the lower end of the elution lifting sliding cylinder is fixedly connected to the elution lifting connecting frame; An elution lifting driving rod for driving the elution lifting sliding cylinder to move up and down is arranged in the elution lifting fixed cylinder.

[0011] Description: The elution lifting mechanism can be used to control the depth of the entire water washing and desalting mechanism immersed in water, and the elution lifting mechanism can drive the entire water washing and desalting mechanism to move up and down reciprocatingly to rinse the solid waste incineration fly ash in the fly ash water washing chamber.

[0012] Preferably, the elution lifting mechanism is connected to the inner wall of the factory building through a horizontal migration mechanism, and the horizontal migration mechanism includes a horizontal migration support seat fixed on the top of the elution lifting fixed cylinder, and the horizontal migration support seat has a horizontal through-going wheel shaft connecting hole, a migration wheel support shaft is rotatably connected in the wheel shaft connecting hole, and a horizontal migration support wheel is fixed to the end of the migration wheel support shaft; A horizontally extending horizontal transfer support beam is fixed on the inner wall of the factory building, a horizontal transfer support rail is fixed on the top of the horizontal transfer support beam, and the horizontal transfer support wheel is rotatably supported on the top of the horizontal transfer support rail.

[0013] Description: The entire water washing and desalting mechanism is driven to migrate in the horizontal direction through the horizontal migration mechanism, so as to facilitate the movement of the entire water washing and desalting mechanism to the top of the ash discharge guide pipe, so as to facilitate the discharge of the washed solid waste incineration fly ash.

[0014] Preferably, the horizontal migration mechanism is driven to move by a linear motor structure, the linear motor structure includes a driving support plate fixed on the top of the horizontal migration support seat, a driving support beam arranged parallel to the horizontal migration support beam is fixed on the inner wall of the factory building, and the driving support beam is above the driving support plate; The stator of the linear motor is fixed on the lower side of the driving support beam, and the mover of the linear motor is fixed on the top of the driving support plate.

[0015] Description: The linear motor structure can more smoothly drive the entire water washing and desalination mechanism to migrate in the horizontal direction.

[0016] Preferably, a one-way water inlet mechanism is provided on the cage-type washing support bottom plate, and the one-way water inlet mechanism comprises a one-way water inlet pipe fixed on the cage-type washing support bottom plate and extending vertically, the upper end of the one-way water inlet pipe is connected to the fly ash washing chamber, and a one-way water inlet lower control plate and a one-way water inlet upper control plate are fixed in sequence from bottom to top in the one-way water inlet pipe; The one-way water inlet lower control plate is provided with a vertically penetrating one-way water inlet hole, the one-way water inlet upper control plate is provided with a vertically penetrating top rod connecting hole, a one-way water inlet control top rod is slidably connected in the top rod connecting hole, and the lower end of the one-way water inlet control top rod is press-fitted in the one-way water inlet hole; A one-way water inlet control spring is press-fitted between the one-way water inlet control push rod and the lower side of the one-way water inlet upper control plate; The one-way water inlet upper control plate is provided with a plurality of vertically penetrating one-way water inlet flow holes.

[0017] Description: The one-way water inlet mechanism can use the water pressure difference in the initial stage to make water quickly flow into the fly ash washing chamber, reducing the total water inlet time and improving work efficiency.

[0018] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects: 1. The present invention has a reasonable structural design and can efficiently desalinate chloride, sulfate and other salts in solid waste incineration fly ash, reduce the chlorine content in solid waste incineration fly ash to a lower level, and ensure that the treated solid waste incineration fly ash meets the standard requirements for subsequent disposal or utilization; 2. The invention has a strong heavy metal removal capability. In addition to desalination, it can also effectively remove heavy metals such as lead, mercury, cadmium, etc. in solid waste incineration fly ash, separate heavy metals from solid waste incineration fly ash, and reduce the toxicity of solid waste incineration fly ash; 3. The present invention has great operational flexibility and can adapt to solid waste incineration fly ash of various properties and salt contents. It can flexibly adjust the operating parameters according to the changes of solid waste incineration fly ash, including washing time, water washing temperature, liquid-solid ratio, etc., to ensure the stability of the treatment effect; 4. The water resource recycling of the present invention is to repeatedly recycle the elution water during the solid waste incineration fly ash elution process until the salt content in the water is close to saturation, thereby reducing the use of fresh water, reducing water resource consumption, realizing the recycling of water resources, saving costs and reducing wastewater discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the present invention; Figure 2 yes Figure 1 Left view of Figure 3 It is a schematic structural diagram of the water washing and desalination mechanism of the present invention; Figure 4 It is a structural schematic diagram of the ash discharge mechanism of the present invention; Figure 5 It is a structural schematic diagram of the one-way water inlet mechanism of the present invention; Figure 6 It is a structural schematic diagram of the elution lifting mechanism of the present invention.

[0020] In the figure, 10-factory building, 11-fly ash washing and desalting pool, 111-washing and desalting water input pipe, 112-washing and desalting water external pipe, 20-washing and desalting mechanism, 211-cage washing and desalting support top plate, 212-cage washing and desalting support bottom plate, 213-cage washing and desalting support vertical rod, 214-filter cloth restraining arc plate, 215-initial fly ash input pipe, 22-washing and desalting filter cloth, 220-fly ash washing chamber, 23-washing stirring mechanism, 230-stirring shaft Connection hole, 231-elution stirring drive shaft, 232-fly ash washing stirring short rod, 233-elution stirring drive housing, 234-elution stirring drive motor, 24-ash discharge mechanism, 240-ash discharge through hole, 241-ash discharge guide cone shell, 242-ash discharge control ring, 243-ash discharge control cone shell, 244-ash discharge guide pipe, 245-ash discharge temporary storage box, 2410-ash discharge through hole, 24 30-ash discharge matching hole, 25-one-way water inlet mechanism, 251-one-way water inlet pipe, 252-one-way water inlet lower control plate, 253-one-way water inlet upper control plate, 254-one-way water inlet hole, 255-top rod connection hole, 256-one-way water inlet control top rod, 257-one-way water inlet control spring, 258-one-way water inlet flow hole, 31-elution lifting mechanism, 311-elution lifting fixed cylinder, 312-elution lifting sliding cylinder, 313- Elution lifting connecting frame, 314-elution lifting driving rod, 32-horizontal migration mechanism, 321-horizontal migration support seat, 3210-wheel axle connecting hole, 322-migration wheel support shaft, 323-horizontal migration support wheel, 324-horizontal migration support beam, 325-horizontal migration support rail, 33-linear motor structure, 331-driving support plate, 332-driving support beam, 333-linear motor stator, 334-linear motor mover. DETAILED DESCRIPTION

[0021] Combine the following Figure 1 to Figure 6 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front, and back directions mentioned below are consistent with the up, down, left, right, front, and back directions of the projection relationship of the respective main views or structural schematic diagrams themselves.

[0022] Example 1: A water washing and desalination treatment device for solid waste incineration fly ash, such as Figure 1 As shown, it includes a fly ash water washing and desalination tank 11 arranged on the ground in a plant 10, and a water washing and desalination mechanism 20 connected to the plant 10 and located above the fly ash water washing and desalination tank 11; A washing and desalting water inlet pipe 111 and a washing and desalting water outlet pipe 112 connected to the inside of the fly ash washing and desalting pool 11 are fixed to the outside of the fly ash washing and desalting pool 11; like Figure 3As shown, the water washing and desalting mechanism 20 includes a cage-type elution support top plate 211 and a cage-type elution support bottom plate 212, and a plurality of vertically extending cage-type elution support vertical rods 213 are fixed between the cage-type elution support top plate 211 and the cage-type elution support bottom plate 212; A plurality of filter cloth restraining arc plates 214 are fixed between the outer edges of the cage-type elution support top plate 211 and the cage-type elution support bottom plate 212, and an annular water washing and desalting filter cloth 22 is fixed between the cage-type elution support top plate 211 and the cage-type elution support bottom plate 212; The water-washing and desalting filter cloth 22 is located inside the plurality of filter cloth restraining arc plates 214, and the water-washing and desalting filter cloth 22 surrounds the plurality of cage-type elution supporting vertical rods 213; A fly ash water washing chamber 220 is formed between the lower side of the cage type elution support top plate 211, the top of the cage type elution support bottom plate 212 and the inner side of the water washing desalination filter cloth 22; An initial fly ash input pipe 215 connected to the fly ash washing chamber 220 is fixed on the cage-type elution support top plate 211 .

[0023] like Figure 3 As shown, an elution stirring mechanism 23 is provided on the cage-type elution support top plate 211, and a vertically penetrating stirring shaft connection hole 230 is provided on the cage-type elution support top plate 211. The elution stirring mechanism 23 includes an elution stirring driving shaft 231 rotatably connected to the stirring shaft connection hole 230, and a plurality of fly ash water washing stirring short rods 232 are fixed to one end of the elution stirring driving shaft 231 in the fly ash water washing chamber 220; An elution stirring drive accommodating shell 233 is fixed on the top of the cage-type elution support top plate 211, and the top of the elution stirring drive shaft 231 extends into the elution stirring drive accommodating shell 233. An elution stirring drive motor 234 for driving the elution stirring drive shaft 231 to rotate is fixed in the elution stirring drive accommodating shell 233.

[0024] The elution stirring drive motor 234 is a commercially available motor of the prior art; like Figure 3 As shown, the cage-type washing support bottom plate 212 is provided with an ash discharge mechanism 24, as shown in FIG. Figure 4 As shown, the cage-type elution support bottom plate 212 has a vertically penetrating ash discharge through hole 240, and the ash discharge mechanism 24 includes an ash discharge guide cone shell 241 fixed in the ash discharge through hole 240 and having an inverted cone shape; The lower end of the cage-type elution support bottom plate 212 is rotatably connected to an ash discharge control ring 242, an inverted cone-shaped ash discharge control cone shell 243 is fixed inside the ash discharge control ring 242, and the ash discharge control cone shell 243 is rotatably fitted on the outer side of the ash discharge guide cone shell 241; The ash discharge guide cone shell 241 has a plurality of ash discharge through holes 2410 on its side wall, and the ash discharge control cone shell 243 has a plurality of ash discharge matching holes 2430 on its side wall; The ash discharge control ring 242 is driven by a prior art servo motor fixed on the cage-type elution support bottom plate 212 through a worm gear transmission to rotate around the vertical axis of the ash discharge control ring 242; A plurality of vertically extending ash discharge guide pipes 244 are fixed to the outside of the fly ash washing and desalination pool 11 , and an ash discharge temporary storage box 245 with an opening facing upward is fixed on the ground in the plant 10 and below the ash discharge guide pipes 244 .

[0025] Embodiment 2: Based on embodiment 1, Figure 6 As shown, an elution lifting mechanism 31 is provided on the top of the water washing and desalting mechanism 20, and the elution lifting mechanism 31 includes an elution lifting fixed cylinder 311 connected to the inner wall of the plant 10 and with an opening facing downward, an elution lifting sliding cylinder 312 with an opening facing upward is slidably connected in the elution lifting fixed cylinder 311, an elution lifting connecting frame 313 is fixed on the top of the cage-type elution supporting top plate 211, and the lower end of the elution lifting sliding cylinder 312 is fixedly connected to the elution lifting connecting frame 313; An elution lifting drive rod 314 for driving the elution lifting sliding cylinder 312 to lift and move is provided in the elution lifting fixed cylinder 311. The elution lifting drive rod 314 is an electrically controlled telescopic rod driven by a servo motor in the prior art. The outer rod end of the elution lifting drive rod 314 is fixedly connected to the top of the elution lifting fixed cylinder 311, and the inner rod end of the elution lifting drive rod 314 is fixedly connected to the bottom of the elution lifting sliding cylinder 312.

[0026] Embodiment 3: Based on embodiment 2, Figure 6 As shown, the elution lifting mechanism 31 is connected to the inner wall of the factory building 10 through the horizontal migration mechanism 32. The horizontal migration mechanism 32 includes a horizontal migration support seat 321 fixed on the top of the elution lifting fixed cylinder 311. The horizontal migration support seat 321 has a horizontally penetrating wheel shaft connection hole 3210. The wheel shaft connection hole 3210 is rotatably connected with a migration wheel support shaft 322. The end of the migration wheel support shaft 322 is fixed with a horizontal migration support wheel 323. A horizontally extending horizontal migration support beam 324 is fixed on the inner wall of the factory building 10 , a horizontal migration support rail 325 is fixed on the top of the horizontal migration support beam 324 , and a horizontal migration support wheel 323 is rollingly supported on the top of the horizontal migration support rail 325 .

[0027] Embodiment 4: Based on embodiment 3, Figure 6As shown, the horizontal migration mechanism 32 is driven to move by a linear motor structure 33, and the linear motor structure 33 includes a driving support plate 331 fixed on the top of the horizontal migration support seat 321, and a driving support beam 332 arranged parallel to the horizontal migration support beam 324 is fixed on the inner wall of the factory building 10, and the driving support beam 332 is located above the driving support plate 331; A linear motor stator 333 is fixed to the lower side of the driving support beam 332 , and a linear motor mover 334 is fixed to the top of the driving support plate 331 .

[0028] Embodiment 5: Based on embodiment 4, Figure 3 As shown, a one-way water inlet mechanism 25 is provided on the cage-type elution support bottom plate 212. Figure 5 As shown, the one-way water inlet mechanism 25 includes a one-way water inlet pipe 251 fixed on the cage-type washing support bottom plate 212 and extending vertically, the upper end of the one-way water inlet pipe 251 is connected to the fly ash washing chamber 220, and a one-way water inlet lower control plate 252 and a one-way water inlet upper control plate 253 are fixed in the one-way water inlet pipe 251 from bottom to top in sequence; The one-way water inlet lower control plate 252 is provided with a vertically penetrating one-way water inlet hole 254, and the one-way water inlet upper control plate 253 is provided with a vertically penetrating top rod connecting hole 255, in which a one-way water inlet control top rod 256 is slidably connected, and the lower end of the one-way water inlet control top rod 256 is press-fitted into the one-way water inlet hole 254; The lower end of the one-way water inlet control top rod 256 is an inverted cone structure, and the top of the one-way water inlet hole 254 is also an inverted cone structure. The cone surface of the lower end of the one-way water inlet control top rod 256 is pressed into the cone surface of the top of the one-way water inlet hole 254; A one-way water inlet control spring 257 is press-fitted between the one-way water inlet control top rod 256 and the lower side of the one-way water inlet upper control plate 253; The one-way water inlet upper control plate 253 is provided with a plurality of vertically penetrating one-way water inlet flow holes 258 .

[0029] In the actual application process of the present invention, clean water is input into the fly ash water washing and desalination tank 11 through the washing and desalination water input pipe 111, and the input amount of clean water is 80% of the volume of the fly ash water washing and desalination tank 11; The solid waste incineration fly ash to be processed is fed into the fly ash washing chamber 220 through the initial fly ash input pipe 215 using a conveyor in the prior art; By volume, the input amount of fly ash for each solid waste incineration is 30% of the volume of the fly ash washing chamber 220; The cage-type water washing and desalination mechanism 20 is pressed into the clean water by driving the elution lifting mechanism 31, and the inner rod of the elution lifting driving rod 314 is extended to drive the elution lifting sliding cylinder 312, the elution lifting connecting frame 313 and the entire water washing and desalination mechanism 20 to move downward along the axis of the elution lifting fixed cylinder 311, so that the lower half of the entire water washing and desalination mechanism 20 is immersed in the clean water of the fly ash water washing and desalination tank 11; Under the action of water pressure, the one-way water inlet control push rod 256 can be pushed upward. In the initial stage, clean water will quickly enter the fly ash washing chamber 220 through the one-way water inlet hole 254 and the one-way water inlet flow hole 258; Under the action of water pressure, clean water will also pass through the water washing and desalting filter cloth 22 into the fly ash water washing chamber 220. The water washing and desalting filter cloth 22 can be a filter cloth with a pore size of 400 mesh in the prior art. The solid waste incineration fly ash in the fly ash washing chamber 220 is fully stirred by the elution stirring mechanism 23, so that the salt in the solid waste incineration fly ash is fully dissolved in the clean water; The output shaft of the elution stirring driving motor 234 drives the elution stirring driving shaft 231 to rotate, and the elution stirring driving shaft 231 drives the plurality of fly ash water washing stirring short rods 232 to rotate together, so as to fully stir the solid waste incineration fly ash in the fly ash water washing chamber 220; When the salt in the solid waste incineration fly ash is fully dissolved in the clean water, the entire water washing and desalination mechanism 20 is lifted by the elution lifting mechanism 31, and the inner rod of the elution lifting driving rod 314 is retracted to drive the elution lifting sliding cylinder 312, the elution lifting connecting frame 313 and the entire water washing and desalination mechanism 20 to move upward along the axis of the elution lifting fixed cylinder 311, so that the entire water washing and desalination mechanism 20 is separated from the clean water; The entire water washing and desalination mechanism 20 is allowed to stand for 10 minutes, so that the water in the fly ash water washing chamber 220 is discharged through the water washing and desalination filter cloth 22 under the action of gravity and falls back into the fly ash water washing and desalination tank 11, and the water in the fly ash water washing chamber 220 is controlled dry; The entire water washing and desalination mechanism 20 is driven by the horizontal migration mechanism 32 to be located above the ash discharge guide pipe 244, which is convenient for slag discharge. The linear motor structure 33 can drive the washing and desalination lifting mechanism 31 together with the entire water washing and desalination mechanism 20 to move along the direction of the horizontal migration support track 325. During this process, the horizontal migration support wheel 323 is always supported by rolling on the top of the horizontal migration support track 325. When the water washing and desalination mechanism 20 is directly above the ash discharge guide pipe 244, it stops moving. In the initial state, the ash discharge perforations 2410 and the ash discharge matching holes 2430 in the ash discharge mechanism 24 are in a staggered and isolated state; The ash discharge control ring 242 is driven by a prior art servo motor fixed on the cage-type elution support bottom plate 212 through a worm gear transmission to rotate around the vertical axis of the ash discharge control ring 242, and the ash discharge control ring 242 then drives the ash discharge control cone shell 243 to rotate together, so that each ash discharge through hole 2410 and the ash discharge matching hole 2430 are aligned and connected; The solid waste incineration fly ash after elution treatment will be discharged through the ash discharge perforation 2410 and the ash discharge matching hole 2430. The solid waste incineration fly ash after elution treatment falls into the ash discharge temporary storage box 245 for temporary storage under the guidance of the ash discharge guide pipe 244. When the salt dissolved in the clear water in the fly ash washing and desalting tank 11 is saturated to form saturated brine, the saturated brine is discharged through the washing and desalting water external discharge pipe 112, and the saturated brine is evaporated and crystallized to recover the salt therein.

Claims

1. A water washing and desalination treatment device for solid waste incineration fly ash, characterized in that: It comprises a fly ash water washing and desalination pool (11) arranged on the ground in a plant (10), and a water washing and desalination mechanism (20) connected to the plant (10) and located above the fly ash water washing and desalination pool (11); A desalting water inlet pipe (111) and a desalting water outlet pipe (112) connected to the interior of the fly ash desalting water washing tank (11) are fixed on the outside of the desalting water washing tank (11); The water washing and desalting mechanism (20) comprises a cage-type elution support top plate (211) and a cage-type elution support bottom plate (212), and a plurality of vertically extending cage-type elution support vertical rods (213) are fixed between the cage-type elution support top plate (211) and the cage-type elution support bottom plate (212); A plurality of filter cloth restraining arc plates (214) are fixed between the outer edges of the cage-type elution support top plate (211) and the cage-type elution support bottom plate (212), and an annular water washing and desalting filter cloth (22) is fixed between the cage-type elution support top plate (211) and the cage-type elution support bottom plate (212); The water-washing and desalination filter cloth (22) is located inside the plurality of filter cloth restraining arc plates (214), and the water-washing and desalination filter cloth (22) surrounds the plurality of cage-type elution supporting vertical rods (213); A fly ash water washing chamber (220) is formed between the lower side of the cage-type elution support top plate (211), the top of the cage-type elution support bottom plate (212), and the inner side of the water washing desalination filter cloth (22); An initial fly ash input pipe (215) connected to the fly ash water washing chamber (220) is fixed on the cage-type elution support top plate (211).

2. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 1 is characterized in that: An elution stirring mechanism (23) is provided on the cage-type elution support top plate (211), and a vertically penetrating stirring shaft connection hole (230) is provided on the cage-type elution support top plate (211). The elution stirring mechanism (23) comprises an elution stirring drive shaft (231) rotatably connected to the stirring shaft connection hole (230), and a plurality of fly ash water washing stirring short rods (232) are fixed to one end of the elution stirring drive shaft (231) located in the fly ash water washing chamber (220); An elution stirring drive housing (233) is fixed on the top of the cage-type elution support top plate (211), the top of the elution stirring drive shaft (231) extends into the elution stirring drive housing (233), and an elution stirring drive motor (234) for driving the elution stirring drive shaft (231) to rotate is fixed in the elution stirring drive housing (233).

3. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 1 is characterized in that: An ash discharge mechanism (24) is provided on the cage-type elution support bottom plate (212), wherein the cage-type elution support bottom plate (212) has an ash discharge through hole (240) that vertically penetrates therethrough, and the ash discharge mechanism (24) comprises an ash discharge guide cone shell (241) that is fixed in the ash discharge through hole (240) and is in the shape of an inverted cone. The lower end of the cage-type elution support bottom plate (212) is rotatably connected to an ash discharge control ring (242), an inverted cone-shaped ash discharge control cone shell (243) is fixed inside the ash discharge control ring (242), and the ash discharge control cone shell (243) is rotatably fitted and sleeved on the outer side surface of the ash discharge guide cone shell (241); The ash discharge guide cone shell (241) has a plurality of ash discharge perforations (2410) on its side wall, and the ash discharge control cone shell (243) has a plurality of ash discharge matching holes (2430) on its side wall; A plurality of vertically extending ash discharge guide pipes (244) are fixed outside the fly ash water washing and desalination pool (11), and an ash discharge temporary storage box (245) with an opening facing upward is fixed on the ground inside the plant (10) and below the ash discharge guide pipes (244).

4. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 1, characterized in that: An elution lifting mechanism (31) is provided on the top of the water washing and desalting mechanism (20), and the elution lifting mechanism (31) comprises an elution lifting fixed cylinder (311) connected to the inner wall of the factory building (10) and with an opening facing downwards, an elution lifting sliding cylinder (312) with an opening facing upwards is slidably connected inside the elution lifting fixed cylinder (311), an elution lifting connecting frame (313) is fixed on the top of the cage-type elution supporting top plate (211), and the lower end of the elution lifting sliding cylinder (312) is fixedly connected to the elution lifting connecting frame (313); An elution lifting driving rod (314) for driving the elution lifting sliding cylinder (312) to move upward and downward is arranged in the elution lifting fixed cylinder (311).

5. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 4, characterized in that: The elution lifting mechanism (31) is connected to the inner wall of the factory building (10) via a horizontal migration mechanism (32); the horizontal migration mechanism (32) comprises a horizontal migration support seat (321) fixed to the top of the elution lifting fixed cylinder (311); the horizontal migration support seat (321) has a horizontally penetrating wheel shaft connection hole (3210); a migration wheel support shaft (322) is rotatably connected to the wheel shaft connection hole (3210); a horizontal migration support wheel (323) is fixed to the end of the migration wheel support shaft (322); A horizontally extending horizontal migration support beam (324) is fixed on the inner wall of the factory building (10), a horizontal migration support track (325) is fixed on the top of the horizontal migration support beam (324), and the horizontal migration support wheel (323) is rollingly supported on the top of the horizontal migration support track (325).

6. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 5, characterized in that: The horizontal migration mechanism (32) is driven to move by a linear motor structure (33), the linear motor structure (33) comprising a driving support plate (331) fixed to the top of the horizontal migration support seat (321), a driving support beam (332) arranged parallel to the horizontal migration support beam (324) is fixed on the inner side wall of the factory building (10), and the driving support beam (332) is located above the driving support plate (331); A linear motor stator (333) is fixed to the lower side of the driving support beam (332), and a linear motor mover (334) is fixed to the top of the driving support plate (331).

7. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 1, characterized in that: A one-way water inlet mechanism (25) is provided on the cage-type washing support bottom plate (212), and the one-way water inlet mechanism (25) comprises a one-way water inlet pipe (251) fixed on the cage-type washing support bottom plate (212) and extending vertically, the upper end of the one-way water inlet pipe (251) is connected to the fly ash washing chamber (220), and a one-way water inlet lower control plate (252) and a one-way water inlet upper control plate (253) are fixed in sequence from bottom to top in the one-way water inlet pipe (251); The one-way water inlet lower control plate (252) has a vertically penetrating one-way water inlet hole (254), the one-way water inlet upper control plate (253) has a vertically penetrating top rod connecting hole (255), a one-way water inlet control top rod (256) is slidably connected in the top rod connecting hole (255), and the lower end of the one-way water inlet control top rod (256) is press-fitted into the one-way water inlet hole (254); A one-way water inlet control spring (257) is press-fitted between the one-way water inlet control top rod (256) and the lower side of the one-way water inlet upper control plate (253); The one-way water inlet upper control plate (253) is provided with a plurality of vertically penetrating one-way water inlet flow holes (258).

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