CN217594057U

CN217594057U - Lime slurry preparing system with slurry recycling function

Info

Publication number: CN217594057U
Application number: CN202220721704.8U
Authority: CN
Inventors: 唐义
Original assignee: Hunan Puxiang Environmental Protection Energy Co ltd
Current assignee: Hunan Puxiang Environmental Protection Energy Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-10-18
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a lime thick liquid system of preparing with function is retrieved to thick liquid, include: the lime hydrate slurry recycling device comprises a slaked lime bin, a screw feeder, a lime slurry preparation tank, a rotary vibration sieve, a slurry recycling tank and a lime slurry storage tank; the bottom of a slaked lime bin is connected with the top of a lime slurry preparation tank through a screw feeder, the top of the lime slurry preparation tank is provided with an industrial water inlet, and a slaked lime raw material and industrial water are uniformly mixed in the lime slurry preparation tank to obtain lime slurry; a discharge port of the lime slurry preparation tank is connected with a rotary vibration sieve to realize lime slurry filtration; the rotary vibration sieve comprises an overflow port and a slurry outlet, and the slurry outlet is used for conveying the filtered lime slurry to a lime slurry storage tank; the overflow port is connected with the slurry recovery tank to realize that the overflowed lime slurry is conveyed to the slurry recovery tank, filtered and conveyed to the lime slurry storage tank. The utility model has the advantages of compact structure, slurrying are efficient, the filter effect is showing and can effectively improve lime thick liquid utilization ratio.

Description

Lime slurry preparation system with slurry recycling function

Technical Field

The utility model belongs to the technical field of msw incineration gas cleaning, concretely relates to lime thick liquid system of preparing with function is retrieved to thick liquid.

Background

The deacidification process of the flue gas purification unit of the waste incineration power plant generally adopts a semidry process, the semidry process adopts a spray drying absorption tower, lime slurry with certain concentration is sprayed into the absorption tower through a high-speed rotating atomizer to react with acid gas, and the reaction temperature is controlled by water spraying. During the adsorption and neutralization reaction, water is evaporated, the generated large solid particles are settled to the bottom of the reactor and discharged, and the generated fine particles and dust are collected by a dust collector and then are treated. And the purified flue gas is discharged into the atmosphere from a chimney through a draught fan. When lime slurry is used as deacidification reactant, the purification efficiency can reach 90-99%.

The lime slurry preparation system is an important component of a flue gas purification system of a waste incineration power plant, and has the main function of continuously providing 8-12% of lime slurry solution required by a reaction tower and carrying out chemical reaction with acid gas in flue gas to realize the flue gas deacidification function. Lime slurry preparation systems of waste incineration power plants generally employ vibrating screens to filter lime slurry to improve slurry quality. A common vibrating screen in the prior art is a straight-line screen, can only vibrate in the horizontal direction, and is easy to cause the condition that quicklime serous fluid forms a film on a screen to block the screen, so that the unsmooth grout discharge is caused, overflow is further caused, and the pulping efficiency is reduced. Furthermore, the slurry overflowing from the vibrating screen in the prior art is usually directly guided to a trench by a pipeline, and once the overflow rate of the slurry is large enough to exceed the storage capacity of the trench and a downstream sedimentation tank, the slurry overflows to the ground, so that the slurry is wasted; if the slurry enters the rainwater drainage system, environmental pollution can be caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a lime thick liquid system of preparing that has the thick liquid and retrieve the function that compact structure, slurrying are efficient, the filter effect is showing and can effectively improve lime thick liquid utilization ratio.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a lime slurry preparation system with a slurry recovery function comprises: the lime hydrate slurry recycling device comprises a slaked lime bin, a screw feeder, a lime slurry preparation tank, a rotary vibration sieve, a slurry recycling tank and a lime slurry storage tank; the bottom of the slaked lime bin is connected with the top of the lime slurry preparation tank through a screw feeder and is used for conveying a slaked lime raw material into the lime slurry preparation tank, an industrial water inlet is formed in the top of the lime slurry preparation tank and is used for conveying industrial water into the lime slurry preparation tank, and the slaked lime raw material and the industrial water are uniformly mixed in the lime slurry preparation tank to obtain lime slurry; the discharge port of the lime slurry preparation tank is connected with a rotary vibration sieve, and the rotary vibration sieve is used for filtering lime slurry; the rotary vibrating screen comprises an overflow port and a slurry outlet, and the slurry outlet is used for conveying the filtered lime slurry to a lime slurry storage tank; the overflow port is connected with the slurry recovery tank and used for conveying the lime slurry overflowing from the rotary vibrating screen to the slurry recovery tank, and conveying the lime slurry to the lime slurry storage tank after filtering in the slurry recovery tank.

As a further improvement of the utility model, the sieve that shakes soon still includes the vibrating motor who has eccentric hammer, vibrating motor is used for realizing shaking soon the sieve and vibrate along horizontal direction and vertical direction.

As a further improvement of the utility model, the rotary vibrating screen further comprises a lower screen body and an upper screen body, wherein a screen for filtering lime slurry is arranged on the connecting surface of the lower screen body and the upper screen body, a lower slurry opening is arranged on the side part of the lower screen body, and the bottom of the lower screen body is connected with a vibrating motor; the top of the upper sieve body is provided with a slurry inlet, and the side part of the upper sieve body is provided with an overflow port.

As a further improvement of the utility model, the bottom of the slurry recovery tank is provided with a slurry discharge port and a clamping groove, and the clamping groove is arranged at the inner side of the slurry recovery tank and close to the slurry discharge port; the clamping groove is used for fixedly mounting a filter screen, and the filter screen is used for filtering lime slurry overflowing into the slurry recovery tank and then conveying the lime slurry into the lime slurry storage tank.

As a further improvement of the utility model, still include basket filter, basket filter sets up between the discharge gate of lime thick liquid preparation jar and the rotary vibrating screen for filter by the lime thick liquid of discharge in the lime thick liquid preparation jar.

As a further improvement of the utility model, a first stirring component for realizing uniform mixing of the slaked lime raw material and the industrial water is arranged in the lime slurry preparation tank; and a second stirring component for realizing uniform stirring of lime slurry is arranged in the lime slurry storage tank.

As a further improvement of the utility model, a first sewage discharging component for discharging impurities is arranged at the bottom of the lime slurry preparation tank; and a second pollution discharge assembly for discharging impurities is arranged at the bottom of the lime slurry storage tank.

As a further improvement, the top of the slaked lime storage bin is provided with a dust removal component, and the dust removal component is used for realizing the internal dust removal of the slaked lime storage bin.

As a further improvement, the lime slurry preparation tank top part is also provided with an exhaust fan, and the exhaust fan is used for discharging the steam generated inside the lime slurry preparation tank.

As a further improvement, the lime slurry storage tank lateral part is connected with many delivery pumps for realize that the lime slurry carries and carries out the deacidification reaction with acid gas in to the flue gas absorption tower.

Compared with the prior art, the utility model has the advantages of:

1. the lime slurry preparation system with the slurry recycling function of the utility model has the advantages that the slaked lime raw material and the industrial water are sequentially fed into the lime slurry preparation tank through program control, and the screw feeder is arranged at the bottom of the slaked lime storage bin for conveying the slaked lime raw material, so that the conveying efficiency of the slaked lime raw material is improved; the discharge port of the lime slurry preparation tank is connected with the rotary vibration sieve, and the lime slurry is filtered by the rotary vibration sieve and then conveyed into the lime slurry storage tank, so that the purity of the lime slurry is effectively improved, the damage to a flue gas purification system caused by excessive impurities of the lime slurry is effectively reduced, and the continuous and stable operation of the flue gas purification system is promoted; meanwhile, an overflow port on the rotary vibration sieve is connected with the slurry recovery tank, when the lime slurry in the rotary vibration sieve flows too large and cannot be filtered in time, the lime slurry can overflow into the slurry recovery tank through the overflow port and is filtered in the slurry recovery tank, and finally the lime slurry is discharged into the lime slurry storage tank through a slurry outlet of the slurry recovery tank, so that the lime slurry is prevented from being directly discharged into a trench through the overflow port to cause lime slurry waste, the utilization rate of the lime slurry is improved, and meanwhile, the risk of environmental pollution caused by the fact that the lime slurry enters a rainwater discharge system is avoided.

2. The utility model discloses a lime thick liquid system of preparing with function is retrieved to thick liquid, the screen cloth that has realized the sieve that shakes soon through the vibrating motor who sets up the eccentric hammer carries out the vibration of high frequency in horizontal direction and vertical direction, the distribution has volatilized the function of sieve that shakes soon, the vibration that utilizes the high frequency has destroyed the liquid film that forms on the filter screen cloth, impurity and bold granule lime in the lime thick liquid carry out filterable while also accelerateed the lime thick liquid and pass through filter screen, pulping efficiency has been improved, the overflow volume has been reduced. Meanwhile, impurities such as insoluble large slaked lime particles contained in the lime slurry can be discharged to the slurry recovery tank through an overflow port of the rotary vibration sieve for centralized cleaning, and the lime slurry obtained through filtering can be recovered to enter the lime slurry storage tank, so that the waste of materials is avoided, the risk of environmental pollution caused by the fact that the lime slurry overflows from the vibration sieve is reduced, the cleanliness of the rotary vibration sieve is greatly improved, and the cleanliness of the working environment of the lime slurry preparation system with the slurry recovery function is improved.

3. The lime slurry preparation system with the slurry recycling function effectively improves the cleanliness inside the slaked lime bin by arranging the dust removal assembly at the top of the slaked lime bin, avoids the danger of dust explosion caused by overhigh dust content inside the bin, and effectively ensures the use safety of the slaked lime bin; the steam exhaust fan is arranged at the top of the lime slurry preparation tank, so that high-temperature steam generated by dissolving a slaked lime raw material in water in the lime slurry preparation tank can be discharged in real time, the internal pressure of the lime slurry preparation tank is ensured to be in a stable pressure range, and the operation safety of the lime slurry preparation tank is improved; through all having set up corresponding blowdown subassembly in lime thick liquid preparation jar and lime thick liquid storage tank bottom, regularly discharge the internal impurity of jar to avoid causing adverse effect to the preparation of lime thick liquid or storage, showing the stability in use who has improved preparation jar and storage tank.

Drawings

Fig. 1 is a schematic diagram of the structural principle of the lime slurry preparation system with the slurry recycling function of the present invention.

Fig. 2 is the structural principle schematic diagram of the rotary vibrating screen of the utility model.

Fig. 3 is a schematic view of another view angle of the rotary vibrating screen of the present invention.

Fig. 4 is a schematic view of the structural principle of the slurry recovery tank of the present invention.

Fig. 5 is a schematic view of the structural principle of the middle filter screen of the present invention.

Illustration of the drawings: 1. a slaked lime storage bin; 2. a screw feeder; 3. a pneumatic gate valve; 4. a feed inlet; 5. a steam exhaust fan; 6. a lime slurry preparation tank; 7. a first stirring assembly; 8. a first sewage draining assembly; 9. a basket filter; 10. rotating and vibrating the screen; 101. an overflow port; 102. a slurry outlet; 103. a vibration motor; 104. a lower screen body; 105. screening a screen; 106. an upper screen body; 107. a pulp inlet; 11. a slurry recovery tank; 111. a filter screen; 112. a pulp discharge port; 113. a card slot; 114. a handle; 12. a second stirring assembly; 13. a lime slurry storage tank; 14. a delivery pump; 15. a second waste assembly; 16. and a dust removal assembly.

Detailed Description

The invention will be further described with reference to the drawings and specific preferred embodiments without limiting the scope of the invention.

Examples

As shown in fig. 1 to 5, the lime slurry preparation system with slurry recycling function of the present invention includes: the lime hydrate slurry recycling device comprises a slaked lime bin 1, a screw feeder 2, a lime slurry preparation tank 6, a rotary vibration sieve 10, a slurry recycling tank 11 and a lime slurry storage tank 13. The bottom of a slaked lime bin 1 is connected with the top of a lime slurry preparation tank 6 through a screw feeder 2 and is used for conveying a slaked lime raw material to the lime slurry preparation tank 6, an industrial water inlet is formed in the top of the lime slurry preparation tank 6 and is used for conveying industrial water to the lime slurry preparation tank 6, and the slaked lime raw material and the industrial water are uniformly mixed in the lime slurry preparation tank 6 to obtain lime slurry with the concentration of 8% -12%. A discharge port of the lime slurry preparation tank 6 is connected with a rotary vibration sieve 10, and the rotary vibration sieve 10 is used for realizing lime slurry filtration; the rotary vibration sieve 10 comprises an overflow port 101 and a slurry outlet 102, wherein the slurry outlet 102 is used for conveying the filtered lime slurry to the lime slurry storage tank 13; the overflow port 101 is connected with the slurry recovery tank 11, and is used for conveying the lime slurry overflowing from the rotary vibrating screen 10 to the slurry recovery tank 11, and conveying the lime slurry to the lime slurry storage tank 13 after filtering in the slurry recovery tank 11.

Furthermore, a pneumatic gate valve 3 is arranged between the screw feeder 2 and the feeding hole 4 of the lime slurry preparation tank 6, and the on-off of the feeding hole 4 is automatically controlled through the pneumatic gate valve 3, so that the automation degree of the system is improved.

It can be understood that the lime slurry filtering device is one of the main devices for improving the quality of the slurry in the lime slurry preparation system, in this embodiment, by using the high-efficiency rotary vibration sieve 10 as the filtering device, the impurities in the slurry are filtered by using the high-frequency vibration of the rotary vibration sieve 10, and the impurities and the excess lime slurry are discharged through the overflow port 101 of the vibration sieve 10. In order to recover the discharged lime slurry and clean impurities in the slurry, a filtering and recovering system connected with an overflow port 101 of a vibrating screen is additionally arranged, the existing original pipeline arrangement discharged into a trench is cancelled, the pipeline of the overflow port 101 is led into a slurry recovering tank 11 with a filtering function, the overflowed slurry is filtered in the slurry recovering tank 11 and then recovered into a lime slurry storage tank 13, and the filtered impurities are remained in the slurry recovering tank 11 for periodic cleaning.

In this embodiment, the slaked lime raw material and the industrial water sequentially enter the lime slurry preparation tank 6 through program control (for example, a PLC controller), and the screw feeder 2 is arranged at the bottom of the slaked lime storage bin 1 to convey the slaked lime raw material, so that the conveying efficiency of the slaked lime raw material is improved. The discharge port of the lime slurry preparation tank 6 is connected with the rotary vibration sieve 10, the lime slurry is filtered by the rotary vibration sieve 10 and then conveyed to the lime slurry storage tank 13, the purity of the lime slurry is effectively improved, the damage to the flue gas purification system caused by excessive lime slurry impurities is effectively reduced, and the continuous stable operation of the flue gas purification system is promoted. Meanwhile, an overflow port 101 in the rotary vibration sieve 10 is connected with the slurry recovery tank 11, when the lime slurry in the rotary vibration sieve 10 flows too large and cannot be filtered in time, the lime slurry can overflow into the slurry recovery tank through the overflow port and is filtered in the slurry recovery tank 11, and finally the lime slurry is discharged into the lime slurry storage tank 13 through a slurry outlet 112 of the slurry recovery tank 11, so that the lime slurry is prevented from being directly discharged into a trench through the overflow port 101 to cause lime slurry waste, the utilization rate of the lime slurry is improved, and meanwhile, the risk of environmental pollution caused by the fact that the lime slurry enters a rainwater discharge system is also avoided.

As shown in fig. 2 and fig. 3, in the present embodiment, the rotary vibration sieve 10 further includes a vibration motor 103 with an eccentric weight, and the rotary vibration sieve 10 is driven by the vibration motor 103 to vibrate in the horizontal direction and the vertical direction, so as to complete the filtering of the lime slurry.

Further, the rotary vibration sieve 10 further comprises a lower sieve body 104 and an upper sieve body 106, a screen 105 for filtering lime slurry is arranged at the joint of the lower sieve body 104 and the upper sieve body 106, a lower slurry opening 102 is arranged at the side part of the lower sieve body 104, and the bottom of the lower sieve body 104 is connected with a vibration motor 103; the top of the upper screen body 106 is provided with a pulp inlet 107, and the side of the upper screen body 106 is provided with an overflow port 101. Under the drive of the vibrating motor 103, the lower sieve body 104 vibrates for a high frequency along the horizontal direction and the vertical direction, and then drives the sieve 105 and the upper sieve body 106 to vibrate for a high frequency, so that the lime slurry is filtered. It can be understood that in order to improve the vibration effect of the rotary vibration sieve 10, an elastic pipeline made of soft material is used for connecting the discharge port of the lime slurry preparation tank 6 and the rotary vibration sieve 10.

During installation, the lower screen 104 and the upper screen 106 can rotate relative to each other, that is, the lower slurry port 102 and the overflow port 101 can be located on the same side of the rotary vibrating screen 10 or on different sides of the rotary vibrating screen 10. Solid particulate impurities separated above the screen 105 during the shaking process may also be discharged through the overflow 101 to the slurry recovery tank 11 for collection.

In this embodiment, the screen 105 is made of a 15-mesh stainless steel net. It can be understood that the mesh number of the screen mesh 105 can be flexibly adjusted according to the size of the impurity particles in the lime slurry, the application range of the rotary vibration screen 10 is widened, and in addition, the filter area of the screen mesh 105 is large and is not easy to block, so that the long-time stable operation of the rotary vibration screen 10 is effectively ensured.

As shown in fig. 4, in the present embodiment, the slurry recovery tank 11 is provided with a slurry discharge port 112 and a card slot 113 at the bottom, and the card slot 113 is disposed inside the slurry recovery tank 11 and near the slurry discharge port 112. The clamping groove 113 is used for fixedly mounting the filter screen 111, the filter screen 111 is used for filtering lime slurry overflowing into the slurry recovery tank 11, and then the lime slurry is conveyed into the lime slurry storage tank 13 through the slurry discharge port 112, so that the lime slurry overflowing from the rotary vibration sieve 10 is recycled.

Further, as shown in fig. 5, a handle 114 is provided on the top of the filter screen 111. The filter screen 111 can be conveniently and quickly inserted into or pulled out of the clamping groove 113 through the lifting handle 114, and the maintenance efficiency of the filter screen 111 is improved. It will be appreciated that the mesh size of the screen 111 may be set to correspond to the mesh size of the screen 105 to ensure the purity of the lime slurry entering the lime slurry tank 13.

In this embodiment, the vibration motor 103 with the eccentric weight is arranged to realize the high-frequency vibration of the screen 105 of the rotary vibration sieve 10 in the horizontal direction and the vertical direction, so that the function of the rotary vibration sieve 10 is exerted, a liquid film formed on the filter screen is destroyed by the high-frequency vibration, impurities and massive particle lime hydrate in lime slurry are filtered, and meanwhile, the lime slurry passes through the filter screen at an accelerated speed, the pulping efficiency is improved, and the overflow amount is reduced. Meanwhile, impurities such as insoluble large slaked lime particles contained in the lime slurry can be discharged into the slurry recovery tank 11 through the overflow port 101 of the rotary vibration sieve 10 to be intensively cleaned, and the lime slurry obtained by filtering can be recovered into the lime slurry storage tank 13, so that the waste of materials is avoided, the risk of environmental pollution caused by the fact that the lime slurry overflows from the rotary vibration sieve 10 is reduced, the cleanliness of the rotary vibration sieve 10 is greatly improved, and the cleanliness of the working environment of the lime slurry preparation system with the slurry recovery function is improved.

As shown in fig. 1, in this embodiment, a basket filter 9 is further included, and the basket filter 9 is disposed between the discharge port of the lime slurry preparation tank 6 and a rotary vibrating screen 10, and is used for filtering the lime slurry discharged from the lime slurry preparation tank 6. The lime slurry discharged from the lime slurry preparation tank 6 is primarily filtered through the basket filter 9, most particle impurities in the lime slurry are effectively intercepted, the filtering pressure of the rotary vibration sieve 10 is reduced, the filtering efficiency of the rotary vibration sieve 10 is improved, and the rotary vibration sieve 10 is beneficial to realizing long-time efficient operation.

As shown in fig. 1, in the present embodiment, a first stirring assembly 7 for uniformly mixing the slaked lime raw material and the industrial water is arranged in the lime slurry preparation tank 6; and a second stirring component 12 for realizing uniform stirring of lime slurry is arranged in the lime slurry storage tank 13. The lime slurry in the tank body is in a motion state through the stirring assembly, and the phenomenon that the concentration of the slurry is reduced due to the fact that the lime in the lime slurry is settled and separated out is avoided.

As shown in fig. 1, in the present embodiment, the bottom of the lime slurry preparation tank 6 is provided with a first sewage discharging assembly 8 for discharging impurities; the bottom of the lime slurry storage tank 13 is provided with a second sewage discharging assembly 15 for discharging impurities. Impurities in the tank body are periodically discharged through the pollution discharge assembly, so that adverse effects on the preparation or storage of the lime slurry are avoided, and the use stability of the lime slurry preparation tank 6 and the lime slurry storage tank 13 is remarkably improved.

As shown in fig. 1, in this embodiment, a dust removing assembly 16 is disposed at the top of the slaked lime storage bin 1, and the dust removing assembly 16 is used for removing dust inside the slaked lime storage bin 1, so as to effectively improve the cleanliness inside the slaked lime storage bin 1, avoid the danger of dust explosion caused by too high dust content inside the storage bin, and effectively ensure the safety of the slaked lime storage bin 1 in use

As shown in fig. 1, in this embodiment, an exhaust fan 5 is further disposed at the top of the lime slurry preparation tank 6, and the exhaust fan 5 is used for discharging steam generated inside the lime slurry preparation tank 6. The method is favorable for discharging high-temperature steam generated by dissolving the slaked lime raw material in water in the lime slurry preparation tank in real time, ensures that the interior of the lime slurry preparation tank is in a stable pressure range, and improves the operation safety of the lime slurry preparation tank.

As shown in fig. 1, in this embodiment, the side of the lime slurry storage tank 13 is connected to a plurality of transfer pumps 14 for transferring the lime slurry to the flue gas absorption tower for deacidification reaction with the acid gas.

The operation process of the lime slurry preparation system of this embodiment is as follows:

firstly, a certain amount of industrial water is added into a lime slurry preparation tank 6, then a certain amount of slaked lime raw material is added, and when the required concentration is close to the required concentration, the required industrial water amount is accurately added to control the concentration, so that lime slurry with the required concentration is obtained. The lime slurry discharged from the lime slurry preparation tank 6 is sequentially filtered by a basket filter 9 and a rotary vibration sieve 10, then discharged into a lime slurry storage tank 13 through a pipeline, and the lime slurry in the lime slurry storage tank 13 is conveyed to a reaction tower of a flue gas purification line through a conveying pump 14 so as to carry out corresponding deacidification reaction.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous changes and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. A lime thick liquid system of preparing with thick liquid recovery function, its characterized in that includes: the lime hydrate slurry recycling device comprises a slaked lime bin (1), a screw feeder (2), a lime slurry preparation tank (6), a rotary vibration sieve (10), a slurry recycling tank (11) and a lime slurry storage tank (13); the bottom of the slaked lime storage bin (1) is connected with the top of the lime slurry preparation tank (6) through the screw feeder (2) and is used for conveying slaked lime raw materials into the lime slurry preparation tank (6), an industrial water inlet is formed in the top of the lime slurry preparation tank (6) and is used for conveying industrial water into the lime slurry preparation tank (6), and the slaked lime raw materials and the industrial water are uniformly mixed in the lime slurry preparation tank (6) to obtain lime slurry; a discharge hole of the lime slurry preparation tank (6) is connected with a rotary vibration sieve (10), and the rotary vibration sieve (10) is used for filtering lime slurry; the rotary vibration sieve (10) comprises an overflow port (101) and a slurry outlet (102), and the slurry outlet (102) is used for conveying the filtered lime slurry to a lime slurry storage tank (13); the overflow port (101) is connected with the slurry recovery tank (11) and is used for conveying the lime slurry overflowing from the rotary vibration sieve (10) to the slurry recovery tank (11) and conveying the lime slurry to the lime slurry storage tank (13) after filtering in the slurry recovery tank (11).

2. The lime slurry preparation system with slurry recovery function according to claim 1, wherein the rotary vibration sieve (10) further comprises a vibration motor (103) with an eccentric weight, and the vibration motor (103) is used for realizing the vibration of the rotary vibration sieve (10) in the horizontal direction and the vertical direction.

3. The lime slurry preparation system with the slurry recycling function according to claim 2, wherein the rotary vibrating screen (10) further comprises a lower screen body (104) and an upper screen body (106), a screen (105) for filtering lime slurry is arranged at the joint of the lower screen body (104) and the upper screen body (106), a lower slurry port (102) is arranged at the side part of the lower screen body (104), and the bottom of the lower screen body (104) is connected with a vibrating motor (103); the top of the upper screen body (106) is provided with a pulp inlet (107), and the side part of the upper screen body (106) is provided with an overflow port (101).

4. The lime slurry preparation system with slurry recovery function according to claim 3, wherein the bottom of the slurry recovery tank (11) is provided with a slurry discharge port (112) and a clamping groove (113), and the clamping groove (113) is arranged at the inner side of the slurry recovery tank (11) and close to the slurry discharge port (112); the clamping groove (113) is used for fixedly mounting a filter screen (111), and the filter screen (111) is used for filtering lime slurry overflowing into the slurry recovery tank (11) and then conveying the lime slurry into the lime slurry storage tank (13).

5. The lime slurry preparation system with a slurry recovery function according to any one of claims 1 to 4, further comprising a basket filter (9), wherein the basket filter (9) is arranged between the discharge port of the lime slurry preparation tank (6) and the rotary vibrating screen (10) and is used for filtering the lime slurry discharged from the lime slurry preparation tank (6).

6. The lime slurry preparation system with a slurry recovery function according to any one of claims 1 to 4, wherein a first stirring component (7) for realizing uniform mixing of a slaked lime raw material and industrial water is arranged in the lime slurry preparation tank (6); and a second stirring component (12) for uniformly stirring lime slurry is arranged in the lime slurry storage tank (13).

7. A lime slurry preparation system with slurry recovery function according to any one of claims 1 to 4, characterized in that the bottom of the lime slurry preparation tank (6) is provided with a first sewage discharging assembly (8) for discharging impurities; and a second pollution discharge assembly (15) for discharging impurities is arranged at the bottom of the lime slurry storage tank (13).

8. The lime slurry preparation system with slurry recovery function according to any one of claims 1 to 4, characterized in that a dust removal component (16) is arranged on the top of the slaked lime storage bin (1), and the dust removal component (16) is used for removing dust inside the slaked lime storage bin (1).

9. The lime slurry preparation system with a slurry recovery function according to any one of claims 1 to 4, wherein an exhaust fan (5) is further provided on the top of the lime slurry preparation tank (6), and the exhaust fan (5) is used for discharging steam generated inside the lime slurry preparation tank (6).

10. The lime slurry preparation system with slurry recovery function according to any one of claims 1 to 4, wherein the lime slurry storage tank (13) is connected at the side with a plurality of transfer pumps (14) for realizing the transfer of lime slurry to the flue gas absorption tower for deacidification reaction with acid gas.