A flue gas circulating fluidized bed dry desulfurization device and a desulfurization method

Abstract

The application discloses a flue gas circulating fluidized bed dry desulfurization equipment and a desulfurization method, and belongs to the technical field of dry desulfurization, which comprises a desulfurization tower, a rotary flue gas dispersing and discharging assembly, an adsorbed particle placing net, a particle layer removing treatment assembly and a multifunctional auxiliary mechanism. One side of the bottom of the desulfurization tower is provided with a flue gas injection port, the rotary flue gas dispersing and discharging assembly is fixedly installed on the inner wall of the bottom of the desulfurization tower, and the flue gas injection port is in communication with the rotary flue gas dispersing and discharging assembly. The adsorbed particle placing net and the particle layer removing treatment assembly are both fixedly installed in the desulfurization tower. The multifunctional auxiliary mechanism is arranged at one side of the top of the desulfurization tower. The rotary flue gas dispersing and discharging assembly, the adsorbed particle placing net, the particle layer removing treatment assembly and the multifunctional auxiliary mechanism are sequentially arranged from bottom to top. The application effectively guarantees the desulfurization efficiency and the utilization rate of the desulfurizer while ensuring the desulfurization effect.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of flue gas circulating fluidized bed dry desulfurization equipment and desulfurization method, belong to dry desulfurization technical field. BACKGROUND

[0002] Coal occupies an important position in the primary energy structure in our country, and there are sulfur dioxide, nitrogen oxide pollutants in the flue gas generated by the process of coal combustion, and the pollutants in the flue gas must be removed to meet the standard before the flue gas can be discharged. At present, the main ways of removing sulfur dioxide in flue gas are wet desulfurization, semi-dry desulfurization and dry desulfurization. In the Chinese patent with application number CN202020700628.3, a kind of active coke dry desulfurization device for flue gas is proposed, which includes a two-stage fluidized bed desulfurization device. The two-stage fluidized bed desulfurization device is provided with a desulfurized active coke discharge port, a flue gas inlet, a fluidized flue gas inlet, a dense phase section return port, a powdered active coke feeding port and a desulfurized flue gas outlet. The utility model can be applied to the field of flue gas dry desulfurization technology. Compared with the existing flue gas active coke dry desulfurization device, amorphous fine powdered active coke is used as the adsorbent, and a two-stage fluidized bed dry desulfurization device with a circulating return device is used as the desulfurization device. This is conducive to reducing the cost of desulfurization adsorbent and greatly improving the utilization efficiency of active coke adsorbent and the removal efficiency of sulfur dioxide. The desulfurization device proposed in the above-mentioned comparative document cannot fully react with flue gas when using the adsorbent. The adsorbent needs to be constantly turned over or replaced during use, which is time-consuming and labor-intensive.

[0003] Therefore, the present application is proposed. SUMMARY

[0004] The purpose of the present application is to provide a kind of flue gas circulating fluidized bed dry desulfurization equipment and desulfurization method to solve the above problems. The rotating drive of the particle delamination treatment assembly drives the rotating cylinder to rotate, so that the scraper on the rotating cylinder can scrape the adsorbed particles on the adsorbed ball laid on the net into the adsorbed ball, so that the adsorbed ball is discharged through the grinder. The surface of the adsorbed ball is scraped off when passing through the grinder. The desulfurizer with fully reacted outer layer and the adsorbed ball material are stripped off, and the desulfurizer with insufficiently reacted inner layer is retained. At this time, the flue gas is circulated again, which can further fully react with the desulfurizer. The desulfurization efficiency and the utilization rate of desulfurizer are effectively guaranteed while ensuring the desulfurization effect.

[0005] The application realizes the above-mentioned purpose through the following technical scheme, a flue gas circulating fluidized bed dry desulfurization equipment and a desulfurization method, which comprises a desulfurization tower, a rotary flue gas dispersion discharge assembly, an adsorption particle placing net, a particle layer removing treatment assembly and a multifunctional auxiliary mechanism, one side of the bottom of the desulfurization tower is provided with a flue gas injection port, the rotary flue gas dispersion discharge assembly is fixedly installed on the inner wall of the bottom of the desulfurization tower, the sulfur-containing flue gas is introduced through the flue gas injection port, the flue gas is discharged through the rotary flue gas dispersion discharge assembly, is uniformly dispersed to each position of the bottom of the desulfurization tower, and then moves upward, the adsorption balls soaked with a desulfurizing agent are laid on the adsorption particle placing net, a fluidized bed is formed in the process that the flue gas continuously rises at the bottom, the adsorption balls soaked with the desulfurizing agent are fully contacted with the flue gas, the sulfur in the flue gas is effectively treated, the flue gas injection port is communicated with the rotary flue gas dispersion discharge assembly, the adsorption particle placing net and the particle layer removing treatment assembly are fixedly installed in the desulfurization tower, the multifunctional auxiliary mechanism is arranged at one side of the top of the desulfurization tower, the rotary flue gas dispersion discharge assembly, the adsorption particle placing net, the particle layer removing treatment assembly and the multifunctional auxiliary mechanism are sequentially arranged from bottom to top, in the flue gas treatment process, the rotary cylinder is driven to rotate by the rotary driving piece of the particle layer removing treatment assembly, the scraping port on the rotary cylinder can scrape the adsorption balls laid on the adsorption particle placing net into the rotary cylinder, the adsorption balls are discharged through the grinder, the surface of the adsorption balls is scraped off when passing through the grinder, the desulfurizing agent in the outer layer that has been fully reacted is stripped together with the material of the adsorption balls, the desulfurizing agent in the inner layer that has not been fully reacted is reserved, the flue gas is recycled again at this time, the desulfurizing agent is further fully and deeply reacted, the desulfurization effect, the desulfurization efficiency and the utilization rate of the desulfurizing agent are effectively ensured.

[0006] Preferably, the rotary flue gas dispersion discharge assembly comprises a ventilation plate, a rotary ventilation pipe and a driving motor, the ventilation plate is fixedly arranged on one side of the inner wall of the desulfurization tower, the rotary ventilation pipe is communicated with the ventilation plate through a rotating joint, the driving motor is fixedly installed on one side of the inner wall of the desulfurization tower, the outer wall of the rotary ventilation pipe is connected with the output shaft of the driving motor, the ventilation plate is communicated with the flue gas injection port, the circulating pump is detachably installed on the flue gas injection port, the circulating pump is used for connecting the top outlet of the desulfurization tower, the rotary ventilation pipe is provided with an exhaust hole, the rotary ventilation pipe is driven to rotate by the opening of the driving motor, the rotary ventilation pipe keeps rotating when the flue gas is introduced into the ventilation plate, the flue gas can be more uniformly diffused at the bottom of the desulfurization tower, then moves upward, the adsorption balls soaked with the desulfurizing agent on the adsorption particle placing net are lifted, a fluidized bed is formed, the adsorption balls soaked with the desulfurizing agent are fully contacted with the flue gas, the sulfur in the flue gas is effectively treated.

[0007] Preferably, the particle layer processing assembly comprises a rotating drive, a rotating cylinder and an external connector, one end of the rotating cylinder is connected with the inner wall of the desulfurization tower through a rotating shaft, the other end of the rotating cylinder is connected with the driving shaft of the rotating drive, the external connector is fixed on one side of the rotating cylinder, the rotating cylinder is driven to rotate by the rotating drive, so that the direction of the rotating cylinder can be adjusted for grabbing and lowering the adsorption balls, and the external connector can be connected with the lifting connecting seat in the multifunctional auxiliary mechanism, on one hand, the adsorption balls stored in the multifunctional auxiliary mechanism can be connected and lowered, and on the other hand, the dust generated when the grinder grinds the adsorption balls can be extracted through the multifunctional auxiliary mechanism, so as to avoid the accumulation of dust in the desulfurization tower and affect the desulfurization effect.

[0008] Preferably, the particle layer processing assembly further comprises a grinder, the rotating drive is fixedly arranged on the inner wall of the desulfurization tower, the grinder is installed on one side of the rotating cylinder, a scraping opening is formed in one side of the rotating cylinder, the grinder comprises an outer pipeline, a micro motor and a grinding roller, the micro motor and the grinding roller are arranged in the outer pipeline, the grinding roller is connected with the output shaft of the micro motor, and the grinding roller is driven to rotate by the micro motor, so that the grinding roller can effectively grind the outer wall of the passing adsorption ball.

[0009] Preferably, the multifunctional auxiliary mechanism comprises a standby particle placing cylinder, a dust filtering box, a three-way pipe and a connecting pipe, the standby particle placing cylinder and the dust filtering box are fixedly installed on the outer wall of the desulfurization tower, the standby particle placing cylinder and the dust filtering box are connected with the connecting pipe through the three-way pipe, the connecting pipe is arranged in the side wall of the desulfurization tower, the standby particle placing cylinder stores the adsorption balls soaked with desulfurizing agent, the dust filtering box is provided with a filter, and the three-way pipe is provided with a control valve, so that the dust generated when the grinder grinds the adsorption balls can be extracted through the dust filtering box, the accumulation of dust in the desulfurization tower is avoided, and the desulfurization effect is affected, and the standby adsorption balls can be lowered into the desulfurization tower through the standby particle placing cylinder.

[0010] Preferably, the multifunctional auxiliary mechanism further comprises a telescopic pipe, a lifting connecting seat, an electric telescopic rod and a fixing support, the telescopic pipe is arranged at one end of the bottom of the connecting pipe, the lifting connecting seat is communicated with the connecting pipe through the telescopic pipe, the electric telescopic rod is installed on the inner wall of the desulfurization tower through the fixing support, and the outer wall of the lifting connecting seat is connected with the telescopic end of the electric telescopic rod, so that the height of the lifting connecting seat is adjusted through the electric telescopic rod, and whether the lifting connecting seat is connected with the external connector on the bottom rotating cylinder or not is controlled.

[0011] The flue gas circulating fluidized bed dry desulfurization method comprises the following steps:

[0012] S1, flue gas is introduced into the flue gas injection port, so that the flue gas is discharged through the rotating flue gas dispersion discharge assembly, uniformly dispersed to each position at the bottom of the desulfurization tower, and then moves upward.

[0013] S2, preliminary treatment, the adsorption particles are placed on the net, and sufficient adsorption balls soaked with desulfurizer are laid in advance, a fluidized bed is formed in the process of the continuous rising of the flue gas at the bottom, so that the adsorption balls soaked with desulfurizer are in full contact with the flue gas, and the sulfur in the flue gas is effectively treated.

[0014] S3, circulating treatment, the flue gas after preliminary treatment is discharged from the top of the desulfurization tower, reenters the rotating flue gas dispersion discharge assembly at the bottom through the circulating pump, and is treated again by the adsorption balls.

[0015] S4, deep treatment, after the flue gas is treated for three times, the particle layer treatment assembly is started, the rotating cylinder is driven to rotate by the rotating drive member, the adsorption balls laid on the adsorption particle placing net are scraped into the rotating cylinder through the scraping port on the rotating cylinder, the grinder on the rotating cylinder is controlled to rotate to the bottom, the adsorption balls are discharged through the grinder, the surface of the adsorption balls is scraped off when passing through the grinder, the desulfurizer in the outer layer which has been fully reacted is stripped together with the material of the adsorption balls, and the desulfurizer in the inner layer which has not been fully reacted is reserved, and at this time, the flue gas is recycled, so that the flue gas and the desulfurizer can be further fully reacted.

[0016] S5, replacement treatment, after the desulfurizer in the adsorption balls is fully reacted and the sulfur in the flue gas is treated, the flue gas is discharged, at this time, the side of the desulfurization tower is opened, the adsorption balls which have been used are taken out, and then the adsorption balls soaked with desulfurizer stored in the standby particle placing cylinder are lowered into the rotating cylinder and then enter the adsorption particle placing net, and then the next flue gas treatment can be carried out.

[0017] The flue gas is discharged through the rotating flue gas dispersion discharge assembly, uniformly dispersed to each position at the bottom of the desulfurization tower, a fluidized bed is formed in the process of the continuous rising of the flue gas at the bottom, so that the adsorption balls soaked with desulfurizer are in full contact with the flue gas, and the sulfur in the flue gas is effectively treated, on this basis, the rotating cylinder is driven to rotate by the rotating drive member of the particle layer treatment assembly, the adsorption balls laid on the adsorption particle placing net are scraped into the rotating cylinder through the scraping port on the rotating cylinder, the adsorption balls are discharged through the grinder, the surface of the adsorption balls is scraped off when passing through the grinder, the desulfurizer in the outer layer which has been fully reacted is stripped together with the material of the adsorption balls, and the desulfurizer in the inner layer which has not been fully reacted is reserved, at this time, the flue gas is recycled, so that the flue gas and the desulfurizer can be further fully reacted, the desulfurization effect is guaranteed, and the desulfurization efficiency and the utilization rate of the desulfurizer are effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the external structure schematic diagram of right side view of the desulfurization equipment of the present application.

[0019] Figure 2 It is the external structure schematic diagram of left side view of the desulfurization equipment of the present application.

[0020] Figure 3 It is the internal structure schematic diagram of the desulfurization equipment of the present application.

[0021] Figure 4 It is the structure schematic diagram of the rotating flue gas dispersion discharge assembly in the desulfurization equipment of the present application.

[0022] Figure 5 It is the structure schematic diagram of the particle layering treatment assembly in the desulfurization equipment of the present application.

[0023] Figure 6 It is the structure schematic diagram of the multifunctional auxiliary mechanism in the desulfurization equipment of the present application.

[0024] In the figure: 1, desulfurization tower; 2, flue gas injection port; 3, rotating flue gas dispersion discharge assembly; 301, air vent plate; 302, rotating air vent pipe; 303, driving motor; 304, exhaust hole; 4, adsorbed particle placement net; 5, particle layering treatment assembly; 501, rotating driving part; 502, rotating cylinder; 503, external connector; 504, scraper opening; 505, grinder; 6, multifunctional auxiliary mechanism; 601, standby particle placement cylinder; 602, dust filter box; 603, three-way pipe; 604, connecting pipe; 605, telescopic pipe; 606, lifting connecting seat; 607, electric telescopic rod; 608, fixed support. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0026] Please refer to Figures 1-6The utility model provides a kind of flue gas circulating fluidized bed dry desulfurization equipment and desulfurization method, including desulfurization tower 1, rotating flue gas dispersion discharge component 3, adsorption particle placement net 4, particle layering treatment component 5 and multifunctional auxiliary mechanism 6, the bottom side of the desulfurization tower 1 is provided with flue gas injection port 2, the rotating flue gas dispersion discharge component 3 is fixedly installed on the bottom inner wall of the desulfurization tower 1, and the flue gas injection port 2 is communicated with the rotating flue gas dispersion discharge component 3, the adsorption particle placement net 4 and the particle layering treatment component 5 are fixedly installed in the desulfurization tower 1, the multifunctional auxiliary mechanism 6 is arranged at the top side of the desulfurization tower 1, the rotating flue gas dispersion discharge component 3, the adsorption particle placement net 4, the particle layering treatment component 5 and the multifunctional auxiliary mechanism 6 are sequentially arranged from bottom to top.

[0027] In the application, sulfur-containing flue gas is introduced through flue gas injection port 2, so that the flue gas is discharged through rotating flue gas dispersion discharge component 3, uniformly dispersed to each position at the bottom of desulfurization tower 1, and then moves upward, the adsorption balls soaked with desulfurizing agent laid on adsorption particle placement net 4 form a fluidized bed in the process of continuous rising of flue gas at the bottom, so that the adsorption balls soaked with desulfurizing agent fully contact with flue gas, and sulfur in flue gas is effectively treated, in the process of flue gas treatment, the rotating cylinder 502 is driven to rotate by the rotary driving part 501 of the particle layering treatment component 5, so that the scraping port 504 on the rotating cylinder 502 can scrape the adsorption balls laid on the adsorption particle placement net 4 into the adsorption balls, so that the adsorption balls are discharged through the grinder 505, the surface of the adsorption balls is scraped off when passing through the grinder 505, the desulfurizing agent in the outer layer has been fully reacted and is stripped together with the material of the adsorption balls, and the desulfurizing agent in the inner layer is retained, which has not been fully reacted, at this time, flue gas is recycled again, and can further fully react with the desulfurizing agent, which guarantees the desulfurization effect, and effectively guarantees the desulfurization efficiency and the utilization rate of desulfurizing agent.

[0028] As Figure 1As shown, the rotating flue gas dispersion discharge assembly 3 includes a ventilation plate 301, a rotating ventilation pipe 302 and a drive motor 303, the ventilation plate 301 is fixedly arranged on one side of the inner wall of the desulfurization tower 1, the rotating ventilation pipe 302 is communicated with the ventilation plate 301 through a rotating joint, the drive motor 303 is fixedly installed on one side of the inner wall of the desulfurization tower 1, the outer wall of the rotating ventilation pipe 302 is connected with the output shaft of the drive motor 303, the ventilation plate 301 is communicated with the flue gas injection port 2, the circulating pump is detachably installed on the flue gas injection port 2, the circulating pump is used for connecting the top outlet of the desulfurization tower 1, the rotating ventilation pipe 302 is provided with an exhaust hole 304, the opening of the drive motor 303 can drive the rotating ventilation pipe 302 to rotate, so that the rotating ventilation pipe 302 keeps rotating when the flue gas is connected into the ventilation plate 301, so that the flue gas can be more evenly diffused at the bottom of the desulfurization tower 1, and then moves upward, lifts the adsorption ball soaked with desulfurizing agent on the adsorption particle placing net 4, forms a fluidized bed, and makes the adsorption ball soaked with desulfurizing agent fully contact with the flue gas, so as to effectively treat the sulfur in the flue gas.

[0029] As shown in Figure 1 The particle layering treatment assembly 5 includes a rotating drive 501, a rotating cylinder 502 and an outer joint 503, one end of the rotating cylinder 502 is connected with the inner wall of the desulfurization tower 1 through a rotating shaft, the other end of the rotating cylinder 502 is connected with the drive shaft of the rotating drive 501, the outer joint 503 is fixed on one side of the rotating cylinder 502, the rotating cylinder 502 is driven to rotate by the rotating drive 501, so that the direction of the rotating cylinder 502 can be adjusted, which is used for grabbing and lowering the adsorption ball, and the outer joint 503 can be connected with the lifting connecting seat 606 in the multifunctional auxiliary mechanism 6, which can connect the adsorption ball stored in the multifunctional auxiliary mechanism 6 to be lowered, and can also extract the dust generated when the grinder 505 grinds the adsorption ball through the multifunctional auxiliary mechanism 6, so as to avoid the accumulation of dust in the desulfurization tower 1 and affect the desulfurization effect.

[0030] As shown in Figure 1 The particle layering treatment assembly 5 further includes a grinder 505, the rotating drive 501 is fixedly arranged on the inner wall of the desulfurization tower 1, the grinder 505 is installed on one side of the rotating cylinder 502, one side of the rotating cylinder 502 is provided with a scraping port 504, the grinder 505 includes an outer pipe, a micro motor and a grinding roller, the micro motor and the grinding roller are arranged in the outer pipe, the grinding roller is connected with the output shaft of the micro motor, and the grinding roller is driven to rotate by the micro motor, so that the grinding roller can effectively grind the outer wall of the passing adsorption ball.

[0031] As shown in Figure 1As shown, the multifunctional auxiliary mechanism 6 includes a spare particle placement cylinder 601, a dust filter box 602, a tee pipe 603 and a connecting pipe 604, the spare particle placement cylinder 601 and the dust filter box 602 are fixedly installed on the outer wall of the desulfurization tower 1, the spare particle placement cylinder 601 and the dust filter box 602 are connected with the connecting pipe 604 through the tee pipe 603, the connecting pipe 604 is arranged on the side wall of the desulfurization tower 1, the spare particle placement cylinder 601 stores the adsorption balls soaked with desulfurizer, the dust filter box 602 is provided with a filter, the tee pipe 603 is provided with a control valve, the dust generated when the adsorption balls are ground by the grinder 505 is sucked out through the dust filter box 602, so as to avoid the accumulation of the dust in the desulfurization tower 1 and affect the desulfurization effect, and the spare adsorption balls are lowered into the desulfurization tower 1 through the spare particle placement cylinder 601.

[0032] As shown in the figure, Figure 1 As shown, the multifunctional auxiliary mechanism 6 further includes a telescopic pipe 605, a lifting connecting seat 606, an electric telescopic rod 607 and a fixed support 608, the telescopic pipe 605 is arranged at one end of the bottom of the connecting pipe 604, the lifting connecting seat 606 is communicated with the connecting pipe 604 through the telescopic pipe 605, the electric telescopic rod 607 is installed on the inner wall of the desulfurization tower 1 through the fixed support 608, the outer wall of the lifting connecting seat 606 is connected with the telescopic end of the electric telescopic rod 607, and the height of the lifting connecting seat 606 is adjusted through the electric telescopic rod 607, so as to control whether the lifting connecting seat 606 is connected with the outer connector 503 on the bottom rotating cylinder 502.

[0033] The flue gas circulating fluidized bed dry desulfurization method comprises the following steps:

[0034] S1, flue gas introduction, the flue gas containing sulfur is introduced through the flue gas inlet 2, so that the flue gas is discharged through the rotating flue gas dispersion discharge assembly 3 and uniformly dispersed to each position at the bottom of the desulfurization tower 1, and then moves upward;

[0035] S2, preliminary treatment, the adsorption particles are placed on the net 4 in advance, and sufficient adsorption balls soaked with desulfurizer are laid, so that the flue gas is formed into a fluidized bed in the process of continuously rising at the bottom, so that the adsorption balls soaked with desulfurizer are fully contacted with the flue gas, and the sulfur in the flue gas is effectively treated;

[0036] S3, circulating treatment, the flue gas after the preliminary treatment is discharged from the top of the desulfurization tower 1, reenters the rotating flue gas dispersion discharge assembly 3 at the bottom through a circulating pump, and is treated again by the adsorption balls for circulating treatment;

[0037] S4, deep processing, after the flue gas is treated for 3 times, the particle removal layer processing assembly 5 is started, the rotary cylinder 502 is driven to rotate by the rotary driving part 501, the adsorbed particles are scraped into the adsorbed ball laid on the adsorbed particle placing net 4 by the scraping port 504 on the rotary cylinder 502, then the grinder 505 on the rotary cylinder 502 is controlled to rotate to the bottom, so that the adsorbed ball is discharged through the grinder 505, the surface of the adsorbed ball is scraped off when passing through the grinder 505, the desulfurizer with which the outer layer has been fully reacted is stripped off together with the adsorbed ball material, the desulfurizer with which the inner layer has not been fully reacted is reserved, at this time, the flue gas is recycled again, and the desulfurizer can be further fully reacted in depth;

[0038] S5, replacement processing, after the desulfurizer in the adsorbed ball is fully reacted, the sulfur in the flue gas is treated, and then the flue gas is discharged, at this time, the side of the desulfurizing tower 1 is opened, the adsorbed ball that has been used up is taken out, then the adsorbed ball soaked with the desulfurizer stored in the standby particle placing cylinder 601 is controlled to be lowered into the rotary cylinder 502 and then enter the adsorbed particle placing net 4, and then the next flue gas treatment can be performed.

[0039] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0040] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A flue gas circulating fluidized bed dry desulfurization equipment, characterized by: The invention comprises a desulfurization tower (1), a rotary flue gas dispersion and discharge component (3), an adsorption particle placement net (4), a particle de-layering treatment component (5) and a multifunctional auxiliary mechanism (6), wherein a flue gas injection port (2) is provided on one side of the bottom of the desulfurization tower (1), the rotary flue gas dispersion and discharge component (3) is fixedly mounted on the inner wall of the bottom of the desulfurization tower (1), and the flue gas injection port (2) is communicated with the rotary flue gas dispersion and discharge component (3), the adsorption particle placement net (4) and the particle de-layering treatment component (5) are both fixedly mounted in the desulfurization tower (1), and the multifunctional auxiliary mechanism (6) is arranged on one side of the top of the desulfurization tower (1), and the rotary flue gas dispersion and discharge component (3), the adsorption particle placement net (4), the particle de-layering treatment component (5) and the multifunctional auxiliary mechanism (6) are arranged in sequence from bottom to top; The rotary flue gas dispersion and exhaust assembly (3) comprises a ventilation plate (301), a rotary ventilation pipe (302) and a drive motor (303); the ventilation plate (301) is fixedly arranged on one side of the inner wall of the desulfurization tower (1); the rotary ventilation pipe (302) is connected to the ventilation plate (301) via a rotary joint; the drive motor (303) is fixedly installed on one side of the inner wall of the desulfurization tower (1); and the outer wall of the rotary ventilation pipe (302) is connected to the output shaft of the drive motor (303); The ventilation plate (301) is in communication with the flue gas injection port (2), a circulating pump is detachably mounted on the flue gas injection port (2), and the circulating pump is used to connect to the top outlet of the desulfurization tower (1), and an exhaust hole (304) is provided on the rotating ventilation pipe (302); The particle de-layering processing assembly (5) comprises a rotating drive member (501), a rotating cylinder (502) and an external joint (503), one end of the rotating cylinder (502) is connected to the inner wall of the desulfurization tower (1) via a rotating shaft, the other end of the rotating cylinder (502) is connected to the driving shaft of the rotating drive member (501), and the external joint (503) is fixed to one side of the rotating cylinder (502); The particle de-layering processing component (5) also includes a grinder (505), the rotating drive member (501) is fixedly arranged on the inner wall of the desulfurization tower (1), the grinder (505) is installed on one side of the rotating cylinder (502), and a scraping port (504) is opened on one side of the rotating cylinder (502). The grinder (505) includes an outer pipe, a micro motor and a grinding roller, the micro motor and the grinding roller are both arranged in the outer pipe, and the grinding roller is connected to the output shaft of the micro motor.

2. The flue gas circulating fluidized bed dry desulfurization equipment according to claim 1, characterized in that: The multifunctional auxiliary mechanism (6) comprises a spare particle placement cylinder (601), a dust filter box (602), a three-way pipe (603) and a connecting pipe (604); the spare particle placement cylinder (601) and the dust filter box (602) are both fixedly mounted on the outer wall of the desulfurization tower (1); the spare particle placement cylinder (601) and the dust filter box (602) are connected to the connecting pipe (604) via the three-way pipe (603); and the connecting pipe (604) is passed through the side wall of the desulfurization tower (1).

3. The flue gas circulating fluidized bed dry desulfurization equipment according to claim 2, characterized in that: The multifunctional auxiliary mechanism (6) further comprises a telescopic tube (605), a lifting connection seat (606), an electric telescopic rod (607) and a fixed bracket (608), wherein the telescopic tube (605) is arranged at one end of the bottom of the connecting tube (604), the lifting connection seat (606) is connected to the connecting tube (604) via the telescopic tube (605), the electric telescopic rod (607) is installed on the inner wall of the desulfurization tower (1) via the fixed bracket (608), and the outer wall of the lifting connection seat (606) is connected to the telescopic end of the electric telescopic rod (607).

4. The flue gas circulating fluidized bed dry desulfurization equipment according to claim 3, characterized in that: The spare particle placement cylinder (601) stores adsorption balls impregnated with a desulfurizer, the dust filter box (602) has a built-in filter, and the three-way pipe (603) is provided with a control valve.

5. A flue gas circulating fluidized bed dry desulfurization method, implemented by a flue gas circulating fluidized bed dry desulfurization device according to any one of claims 2 to 4, characterized in that: The following steps are involved: S1, flue gas introduction, introducing sulfur-containing flue gas through the flue gas injection port (2), so that the flue gas is discharged through the rotary flue gas dispersion and discharge component (3), evenly dispersed to various positions at the bottom of the desulfurization tower (1), and then moves upward; S2, preliminary treatment, sufficient adsorption balls impregnated with desulfurizer are laid on the adsorption particle placement net (4) in advance, and a fluidized bed is formed in the process of the flue gas rising from the bottom, so that the adsorption balls impregnated with desulfurizer are fully in contact with the flue gas, and the sulfur in the flue gas is effectively treated; S3, circulation treatment, the flue gas after preliminary treatment is discharged from the top of the desulfurization tower (1), re-enters the rotary flue gas dispersion and discharge assembly (3) at the bottom through a circulation pump, and is circulated again through the adsorption balls; S4, deep treatment, after the flue gas is circulated for 3 times, the particle de-layering treatment component (5) is controlled to start, and the rotating drum (502) is driven to rotate by the rotating driving member (501), so that the scraping port (504) on the rotating drum (502) can scrape the adsorption balls laid on the adsorption particle placement net (4), and then the grinder (505) on the rotating drum (502) is controlled to rotate to the bottom, so that the adsorption balls are discharged through the grinder (505). When passing through the grinder (505), the surface of the adsorption balls is scraped off, and the desulfurizer in the outer layer that has fully reacted is peeled off together with the material of the adsorption balls, leaving the desulfurizer in the inner layer that has not fully reacted. At this time, the flue gas is circulated again, and can further fully react with the desulfurizer; S5, replacement treatment, after the desulfurizer in the adsorption balls is fully reacted and the sulfur in the flue gas is processed, the flue gas can be discharged. At this time, the side of the desulfurization tower (1) is opened, and the adsorption balls that have been used are taken out. Then, the adsorption balls impregnated with the desulfurizer stored in the spare particle placement cylinder (601) are controlled to be lowered into the rotating cylinder (502) and then enter the adsorption particle placement net (4), and then the next flue gas treatment can be carried out.

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