CN219333772U

CN219333772U - Dry deacidification equipment for garbage incineration power plant

Info

Publication number: CN219333772U
Application number: CN202320497808.XU
Authority: CN
Inventors: 刘志伟; 王伟军; 李科福; 王耀文; 王晓静
Original assignee: Yinchuan Zhongke Environmental Protection Power Co ltd
Current assignee: Yinchuan Zhongke Environmental Protection Power Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-07-14
Anticipated expiration: 2033-03-15

Abstract

A dry deacidification device for a waste incineration power plant comprises a medicament storage part and a deacidification part; the medicament storage part comprises a storage tank, a buffer bin, a weighing mechanism and a discharging mechanism; a protective shell is arranged outside the storage tank, a cavity is formed between the protective shell and the outer wall of the storage tank, and heating pipes which are spirally distributed are arranged on the outer wall of the storage tank; the deacidification part comprises a deacidification tower and dust removal equipment, a mixer is arranged below the deacidification tower and comprises a straight barrel part and a conical part, and a medicament uniform distribution mechanism is arranged at the lower end in the straight barrel part. According to the utility model, the heating pipe is used for heating the outer wall of the storage tank and forming a heat source in the cavity, so that a heat preservation effect can be formed for the storage tank, and the medicament in the storage tank is not easy to damp, so that the medicament property of the medicament is ensured; the uniform medicament fog layer can be formed at the junction of the straight barrel part and the conical part through the medicament uniform distribution mechanism, and under the impact action of the medicament sprayed by the medicament uniform distribution mechanism, the smoke and the medicament form a convection state, so that the smoke and the medicament are fully mixed.

Description

Dry deacidification equipment for garbage incineration power plant

Technical Field

The utility model relates to the technical field of flue gas treatment, in particular to dry deacidification equipment of a waste incineration power plant.

Background

During the combustion of waste, many different chemical reactions can occur during incineration due to the complexity and non-uniformity of the waste components. In addition to the excess air and carbon dioxide, the resulting flue gas also contains components that are directly and indirectly harmful to the human body and the environment. The contaminants can be classified into four categories, namely particulate matter, acid gases, heavy metals, and organic contaminants, depending on their nature.

Because of the existence of acid gas in the flue gas generated by the incineration of the garbage, deacidification treatment is needed during flue gas treatment, and at present, the deacidification treatment mainly adopts three modes of a wet method, a semi-dry method and a dry method. Some techniques for deacidification using dry methods are disclosed in the prior art; for example, the utility model patent with publication number of CN111359422A directly adopts a storage bin for storage when sodium bicarbonate is stored, but when the device is used, the medicament in the storage bin is easy to wet in the storage process to lose the medicament effect, so that the flue gas deacidification effect is difficult to achieve the expected effect; for example, the utility model patent with the publication number of CN217568191U adopts a static mixing mass transfer device of the flue gas and a Venturi accelerating device to realize turbulent mixing of the flue gas and the deacidification agent at a microscopic level so as to realize mixing of the flue gas and the deacidification agent; however, when the scheme is adopted, the deacidification agent is not completely dispersed after entering the flue, and a 90-degree bending dead angle is formed between the static mixing mass transfer device and the Venturi accelerating device, so that the flue gas and the deacidification agent are not fully mixed, and the deacidification effect is affected.

Disclosure of Invention

In order to solve the technical problems in the prior art, in view of the above, it is necessary to provide a dry deacidification apparatus for a waste incineration power plant.

A dry deacidification device for a waste incineration power plant comprises a medicament storage part and a deacidification part;

the medicament storage part comprises a storage tank, a buffer bin, a weighing mechanism and a discharging mechanism; the outer part of the storage tank is provided with a protective shell, a space is reserved between the protective shell and the outer wall of the storage tank, a cavity is formed between the protective shell and the outer wall of the storage tank, the outer wall of the storage tank is provided with heating pipes which are spirally distributed along the outer wall of the storage tank, and the heating pipes are not in contact with the inner wall of the protective shell; the buffer bin is arranged below the storage tank, and the inlet end at the top of the buffer bin is communicated with the outlet end at the bottom of the storage tank; the weighing mechanism is arranged below the buffer bin, and the inlet end of the weighing mechanism is communicated with the outlet end of the bottom of the buffer bin; the discharging mechanism is arranged below the weighing mechanism, and the inlet end of the discharging mechanism is communicated with the outlet end of the weighing mechanism;

the deacidification part comprises a deacidification tower and dust removal equipment connected with the outlet end of the deacidification tower, a mixer is arranged below the deacidification tower, the mixer comprises a straight barrel part and a conical part which are connected into a whole from top to bottom, the interior of the mixer is hollow, a medicament uniform distribution mechanism is arranged at the lower end in the straight barrel part, a medicament conveying pipe communicated with the interior of the straight barrel part is arranged at the lower part of the mixer, the outlet end of the medicament conveying pipe is communicated with the inlet end of the medicament uniform distribution mechanism, the inlet end of the medicament conveying pipe is communicated with the outlet end of the discharging mechanism, a flue gas conveying pipe communicated with the interior of the conical part is arranged at the lower part of the mixer, and the outlet end of the flue gas conveying pipe and the axis of the mixer form an included angle of 45 degrees.

Preferably, a preheating type feeding mechanism is further arranged at the inlet end of the storage tank, and the preheating type feeding mechanism comprises a pre-dryer and a feeding fan; the inlet end of the feeding fan is communicated with the outlet end of the pre-dryer, the outlet end of the feeding fan is communicated with the inlet end of the storage tank, and the pre-dryer is provided with a feeding pipe and a discharging pipe.

Preferably, the pre-dryer comprises an inner cylinder body, an outer cylinder body and a stirring mechanism; the inner cylinder is arranged inside the outer cylinder, the inner cylinder and the outer cylinder are coaxial, a cavity channel which is spirally distributed is arranged between the outer wall of the inner cylinder and the inner wall of the outer cylinder, two ends of the outer cylinder are respectively provided with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are respectively communicated with two ends of the cavity channel, and the stirring mechanism is arranged inside the inner cylinder along the axial direction of the inner cylinder.

Preferably, the stirring mechanism comprises a driving motor, a rotating shaft and a plurality of stirring assemblies; the rotary shaft is arranged in the inner cylinder body along the axial direction of the inner cylinder body, the material turning assemblies are uniformly distributed along the axial direction of the rotary shaft at equal intervals, two adjacent material turning assemblies are arranged at 90 degrees, the driving motor is arranged outside the outer cylinder body, and the driving motor is connected with the rotary shaft.

Preferably, the material turning assembly comprises a connecting sleeve and two pushing material turning devices, wherein the connecting sleeve is sleeved on the rotating shaft, and the two pushing material turning devices are oppositely arranged at two sides of the connecting sleeve at 180 degrees; the pushing and turning device comprises a fixed rod and a shoveling plate, one end of the fixed rod is connected with the connecting sleeve, the other end of the fixed rod is connected with the shoveling plate in a direction, and a 45-degree angle is formed between the center line of the long side of the shoveling plate and the axis of the fixed rod.

Preferably, a guide plate which is spiral is arranged on the inner wall of the straight cylinder part; the guide plate is provided with a drainage hole which is arranged along the axial direction of the mixer; the drainage holes are uniformly distributed along the circumferential direction of the mixer.

Preferably, the medicament uniform distribution mechanism comprises an annular distribution pipe and a shunt pipe; the annular distribution pipe is arranged at the lower end in the straight cylinder part and is concentric with the straight cylinder part; the shunt tubes are uniformly distributed along the circumferential direction of the annular distribution tube, and the outlet ends of the shunt tubes face the circle center of the annular distribution tube.

Preferably, the outlet end of the shunt tube is inclined downwards, so that the shunt tube forms an included angle of 45 degrees with the horizontal direction.

Preferably, a nozzle is arranged at the outlet end of the shunt tube, and the nozzle comprises a connecting pipe, a buffer cavity and a dispersing part; the inlet end of the connecting pipe is in threaded connection with the outlet end of the shunt pipe, the buffer cavity is duckbill-shaped, the inlet end of the buffer cavity is communicated with the outlet end of the connecting pipe, and the inlet end of the dispersing part is communicated with the outlet end of the buffer cavity.

According to the dry deacidification equipment for the garbage incineration power plant, provided by the technical scheme, the protective shell is arranged outside the storage tank, a cavity is formed between the protective shell and the outer wall of the storage tank, and the heating pipe is arranged on the outer wall of the storage tank, so that a heat preservation effect can be formed for the storage tank, and medicaments in the storage tank are not easy to damp, so that the medicament property of the medicaments is ensured; the preheating type feeding mechanism is utilized to preheat and dry the medicament raw materials during feeding, so that moisture in the air is prevented from being absorbed in the process of entering the storage tank, the medicament entering the storage tank is ensured to be always kept dry, and the medicament effect is ensured; the agent even spraying into the conical part through agent equipartition mechanism makes the agent form the medicament fog layer in the intersection of straight section of thick bamboo portion and conical part, is 45 contained angles with the axis of blender with the flue gas at the flue gas conveyer pipe and enters into the conical part in the back, under the agent impact effect that agent equipartition mechanism sprayed, can make flue gas and medicament form convection current state in the conical part, makes flue gas and medicament intensive mixing to realize flue gas deacidification purpose, improve deacidification efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic cross-sectional view of the storage tank of the present utility model.

FIG. 3 is a schematic cross-sectional view of a preheating feed mechanism of the present utility model.

Fig. 4 is a schematic structural view of the stirring mechanism of the present utility model.

Fig. 5 is a schematic structural view of the material turning assembly of the present utility model.

Fig. 6 is a schematic structural view of the mixer of the present utility model.

FIG. 7 is a schematic diagram of a spray head according to the present utility model.

FIG. 8 is a schematic view of another angle of FIG. 7 according to the present utility model.

FIG. 9 is a schematic cross-sectional view of a spray head according to the present utility model.

In the figure: the storage tank 01, the heating pipe 11, the cavity 12, the branch pipe 13, the protective shell 14, the buffer bin 02, the weighing mechanism 03, the discharging mechanism 04, the discharging fan 41, the receiving hopper 42, the star-shaped discharger 43, the preheating type feeding mechanism 05, the predrying device 51, the inner cylinder 511, the outer cylinder 512, the stirring mechanism 513, the driving motor 5131, the rotating shaft 5132, the stirring assembly 5133, the connecting sleeve 51331, the pushing stirring device 51332, the fixing rod 513321, the shovel plate 513322, the baffle plate 513323, the cavity 514, the air inlet pipe 515, the air outlet pipe 516, the feeding pipe 517, the discharging pipe 518, the air outlet pipe 519, the feeding fan 52, the deacidification tower 06, the dust removing device 07, the mixer 08, the straight cylinder 81, the guide plate 811, the drainage hole 812, the cone 82, the medicine uniform distribution mechanism 83, the annular distribution pipe 831, the shunt pipe 832, the spray nozzle 833, the connecting pipe 1, the buffer cavity 8332, the dispersing part 8333, the baffle plate 8334, the flow passage 8335, the medicine conveying pipe 84, the conveying pipe 85, and the screw conveyer 09.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "middle," "outer," "inner," "lower," and the like are used for indicating orientations or positional relationships, merely to facilitate the description of the present utility model and simplify the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present utility model.

Referring to fig. 1 to 9, the utility model provides dry deacidification equipment of a waste incineration power plant, which comprises a medicament storage part and a deacidification part;

the medicament storage part comprises a storage tank 01, a buffer bin 02, a weighing mechanism 03 and a discharging mechanism 04; the outside of the storage tank 01 is provided with a protective shell 14, a space is reserved between the protective shell 14 and the outer wall of the storage tank 01, a cavity 12 is formed between the protective shell 14 and the outer wall of the storage tank 01, the outer wall of the storage tank 01 is provided with heating pipes 11, the heating pipes 11 are spirally distributed along the outer wall of the storage tank 01, and the heating pipes 11 are not contacted with the inner wall of the protective shell 14; because the flue gas after purification treatment still has certain temperature, its heat can recycle, through inserting this flue gas after purifying into heating pipe 11, can form the heat preservation in the outer wall of storage tank 01 and the cavity 12, can form the heat preservation effect to storage tank 01, make the medicament in the storage tank 01 be difficult for wetting to guarantee the drug nature of medicament. The buffer bin 02 is arranged below the storage tank 01, the inlet end at the top of the buffer bin 02 is communicated with the outlet end at the bottom of the storage tank 01, the buffer bin 02 can reduce the impact of the medicament on the weighing mechanism 03, and the fluctuation of the weighing mechanism 03 in use is reduced; a gate valve is provided on a pipe connected between the surge bin 02 and the storage tank 01. The weighing mechanism 03 is arranged below the surge bin 02, and the inlet end of the weighing mechanism 03 is communicated with the outlet end of the bottom of the surge bin 02. The discharging mechanism 04 is arranged below the weighing mechanism 03, and the inlet end of the discharging mechanism 04 is communicated with the outlet end of the weighing mechanism 03.

Wherein, the deacidification part comprises a deacidification tower 06 and a dust removal device 07 connected with the outlet end of the deacidification tower 06; a mixer 08 is arranged below the deacidification tower 06, the mixer 08 comprises a straight barrel part 81 and a conical part 82 which are connected into a whole from top to bottom, the interior of the mixer 08 is hollow, a medicament uniformly-distributing mechanism 83 is arranged at the lower end in the straight barrel part 81, and medicaments can be uniformly sprayed into the conical part 82 through the medicament uniformly-distributing mechanism 83, so that a medicament fog layer is formed at the junction of the straight barrel part 81 and the conical part 82; the lower part of the mixer 08 is provided with a medicament delivery pipe 84 communicated with the inside of the straight barrel part 81, the medicament delivery pipe 84 is communicated with the inlet end of the medicament uniformly-distributing mechanism 83, the lower part of the mixer 08 is provided with a flue gas delivery pipe 85 communicated with the inside of the conical part 82, the outlet end of the flue gas delivery pipe 85 forms an included angle of 45 degrees with the axis of the mixer 08, and a screw conveyer 09 communicated with the outlet end of the bottom of the mixer 08 is arranged below the mixer 08. The medicament can be evenly sprayed into the conical part 82 through the medicament even distribution mechanism 83, so that a medicament fog layer is formed at the junction of the straight cylinder part 81 and the conical part 82, and after the flue gas is led into the conical part 82 by the flue gas conveying pipe 85 through an included angle of 45 degrees with the axis of the mixer 08, the flue gas and the medicament can form a convection state in the conical part 82 under the impact action of the medicament sprayed by the medicament even distribution mechanism 83, so that the flue gas and the medicament are fully mixed, the purpose of deacidifying the flue gas is realized, and the deacidification efficiency is improved.

In one embodiment, a branch pipe 13 is arranged on the heating pipe 11, the branch pipe 13 is communicated with the heating pipe 11, and one sealed end of the branch pipe 13 faces the inner wall of the protective shell 14; the area of the heating pipe 11 can be increased by the branch pipes 13, so that heat can be effectively transferred into the cavity 12, and then, part of hot flue gas stored in the branch pipes 13 can be used for supplementing the heating pipe 11, so that the temperature in the heating pipe 11 is in a relatively stable state, and the effect of flue gas temperature regulation is formed.

In one embodiment, a preheating feed mechanism 05 is also provided at the inlet end of the storage tank 01. Wherein, the preheating type feeding mechanism 05 comprises a pre-dryer 51 and a feeding fan 52; the inlet end of the feeding fan 52 is communicated with the outlet end of the pre-dryer 51, the outlet end of the feeding fan 52 is communicated with the inlet end of the storage tank 01, and the pre-dryer 51 is provided with a feeding pipe 517 and a discharging pipe 518.

Specifically, the pre-dryer 51 includes an inner barrel 511, an outer barrel 512, and a stirring mechanism 513; the inner cylinder 511 is disposed inside the outer cylinder 512, and the inner cylinder 511 and the outer cylinder 512 are coaxial, and a cavity 514 is disposed between the outer wall of the inner cylinder 511 and the inner wall of the outer cylinder 512. The two ends of the outer cylinder 512 are respectively provided with an air inlet pipe 515 and an air outlet pipe 516, the air inlet pipe 515 and the air outlet pipe 516 are respectively communicated with the two ends of the cavity 514, and purified flue gas can be introduced into the cavity 514 through the air inlet pipe 515. The stirring mechanism 513 is arranged in the inner cylinder 511 along the axial direction of the inner cylinder 511, and the stirring mechanism 513 can turn over the medicament to realize turning over; and the medicament can be pushed from the inlet to the outlet. An exhaust pipe 519 communicating with the inner cylinder 511 is provided at one end of the outer cylinder 512 near the discharge pipe. When in use, the moving direction of the medicament moves along the axial direction of the inner cylinder 511 and the outer cylinder 512, namely from the inlet end to the outlet end, and the moving direction of the hot air flow in the cavity 514 is just opposite to the moving direction of the medicament, thereby forming a convection heat exchange effect and realizing better preheating and drying effects on the medicament.

Specifically, the stirring mechanism 513 includes a driving motor 5131, a rotating shaft 5132, and a plurality of stirring assemblies 5133; the rotation shaft 5132 is arranged in the inner cylinder 511 along the axial direction of the inner cylinder 511, the turning assemblies 5133 are uniformly distributed along the axial direction of the rotation shaft 5132 at equal intervals, the two adjacent turning assemblies 5133 are arranged at 90 degrees, the driving motor 5131 is arranged outside the outer cylinder 512, and the driving motor 5131 is connected with the rotation shaft 5132.

Specifically, the material turning component 5133 includes a connecting sleeve 51331 and a material pushing and turning device 51332, the connecting sleeve 51331 is sleeved on the rotating shaft 5132, two material pushing and turning devices 51332 are provided, and the two material pushing and turning devices 51332 are arranged on two sides of the connecting sleeve 51331 in 180 degrees opposite directions.

Specifically, the pushing and turning device 51332 includes a fixing rod 513321 and a shoveling plate 513322, one end of the fixing rod 513321 is connected with the connecting sleeve 51331, the other end of the fixing rod 513321 is connected with the shoveling plate 513322 in a direction, and an angle of 45 ° is formed between the center line of the long side of the shoveling plate 513322 and the axis of the fixing rod 513321. Shovel 513322 is an arc-shaped structure, and a striker plate 513323 is arranged on one side of shovel 513322. The shovel plate 513322 can be used for overturning the medicament, and meanwhile, the shovel plate 513322 and the baffle plate 513323 can be used for pushing the medicament forwards, so that the medicament dispersing effect and medicament conveying can be realized.

In one embodiment, the discharging mechanism 04 comprises a discharging fan 41, a receiving hopper 42 and a star-shaped discharger 43; the receiving hopper 42 is arranged below the weighing mechanism 03, the inlet end of the receiving hopper 42 is truly symmetrical to the outlet end of the weighing mechanism 03, the star-shaped blanking device 43 is arranged below the receiving hopper 42, the inlet end of the top of the star-shaped blanking device 43 is communicated with the outlet end of the bottom of the receiving hopper 42, and the inlet end of the discharging fan 41 is communicated with the outlet end of the star-shaped blanking device 43.

In one embodiment, a guide plate 811 having a spiral shape is provided on the inner wall of the straight tube portion 81; the flue gas and the medicament can form a spiral turbulence state in the straight barrel part 81, and the flue gas and the medicament can be uniformly and fully mixed to increase the contact time of the flue gas and the medicament, thereby improving the deacidification efficiency.

In one embodiment, the guide plate 811 is provided with a drainage hole 812, and the drainage hole 812 is provided along the axial direction of the mixer 08. The drainage holes 812 are uniformly distributed along the circumferential direction of the mixer 08. After the flue gas and the medicament form spiral turbulence, the drainage hole 812 can enable part of the flue gas to carry part of the medicament to flow upwards longitudinally, after the guide plate 811 blocks, the flow speed of the flue gas and the medicament from the drainage hole 812 can be accelerated very fast, the formation of a mixture of the flue gas and the medicament after the spiral turbulence is formed can be disturbed, and the mixing rate of the flue gas and the medicament can be greatly improved so as to fully ensure the deacidification efficiency.

In one embodiment, the medicament even distribution mechanism 83 includes an annular distribution tube 831, a shunt tube 832; the annular distribution pipe 831 is arranged at the lower end in the straight cylinder part 81, and the annular distribution pipe 831 is concentric with the straight cylinder part 81; the split pipes 832 are uniformly distributed along the circumferential direction of the annular distribution pipe 831, and the outlet ends of the split pipes 832 face the center of the annular distribution pipe 831. The outlet end of the shunt 832 is inclined downward such that the shunt 832 is at an angle of 45 ° to the horizontal. After the medicine is sprayed out through the shunt tube 832, a uniform and dense medicine mist layer can be formed on the upper portion of the conical portion 82, and after the medicine is sprayed out, the medicine can have downward impact force by utilizing the effect of the sprayed medicine, and when the smoke flows upwards, the medicine and the smoke can form a convection state, so that the mixing effect of the smoke and the medicine can be improved.

Specifically, a nozzle 833 is disposed at an outlet end of the shunt tube 832, where the nozzle 833 includes a connection tube 8331, a buffer cavity 8332, and a dispersion portion 8333; the inlet end of the connecting tube 8331 is in threaded connection with the outlet end of the shunt tube 832, the buffer cavity 8332 is duckbill-shaped, the inlet end of the buffer cavity 8332 is communicated with the outlet end of the connecting tube 8331, and the inlet end of the dispersing part 8333 is communicated with the outlet end of the buffer cavity 8332.

Wherein, one side that is close to the buffer cavity 8332 in the inside of connecting pipe 8331 is provided with the baffle 8334, and the baffle 8334 is the level setting along the radial direction of connecting pipe 8331, and the one end that keeps away from buffer cavity 8332 of baffle 8334 is the "V" font, can divide into upper and lower two-layer with the medicament under the effect of baffle 8334, because buffer cavity 8332 is the duckbill form, compression space that can be quick to with the quick transport of upper and lower two-layer medicament flow that the baffle 8334 cut apart to dispersing portion 8333, realize that the medicament velocity of flow is accelerated.

Wherein, the inside of the dispersing part 8333 is provided with a spraying flow channel 8335 communicated with the buffer cavity 8332, so that the medicament with accelerated flow rate can be sufficiently and outwards uniformly sprayed out, thereby improving the uniformity of medicament scattering.

The foregoing disclosure is illustrative of the preferred embodiments of the present utility model, and is not to be construed as limiting the scope of the utility model, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the utility model as defined by the appended claims.

Claims

1. A dry deacidification device for a waste incineration power plant is characterized in that: comprises a medicament storage part and a deacidification part;

2. The dry deacidification plant of a waste incineration power plant according to claim 1, wherein: the inlet end of the storage tank is also provided with a preheating type feeding mechanism, and the preheating type feeding mechanism comprises a predrying device and a feeding fan; the inlet end of the feeding fan is communicated with the outlet end of the pre-dryer, the outlet end of the feeding fan is communicated with the inlet end of the storage tank, and the pre-dryer is provided with a feeding pipe and a discharging pipe.

3. The dry deacidification plant of a waste incineration power plant according to claim 2, wherein: the pre-dryer comprises an inner cylinder body, an outer cylinder body and a stirring mechanism; the inner cylinder is arranged inside the outer cylinder, the inner cylinder and the outer cylinder are coaxial, a cavity channel which is spirally distributed is arranged between the outer wall of the inner cylinder and the inner wall of the outer cylinder, two ends of the outer cylinder are respectively provided with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are respectively communicated with two ends of the cavity channel, and the stirring mechanism is arranged inside the inner cylinder along the axial direction of the inner cylinder.

4. A dry deacidification plant for a waste incineration power plant according to claim 3, wherein: the stirring mechanism comprises a driving motor, a rotating shaft and a plurality of stirring assemblies; the rotary shaft is arranged in the inner cylinder body along the axial direction of the inner cylinder body, the material turning assemblies are uniformly distributed along the axial direction of the rotary shaft at equal intervals, two adjacent material turning assemblies are arranged at 90 degrees, the driving motor is arranged outside the outer cylinder body, and the driving motor is connected with the rotary shaft.

5. The dry deacidification apparatus of a waste incineration power plant according to claim 4, wherein: the material turning assembly comprises a connecting sleeve and two material pushing and turning devices, wherein the connecting sleeve is sleeved on the rotating shaft, and the two material pushing and turning devices are oppositely arranged at two sides of the connecting sleeve at 180 degrees; the pushing and turning device comprises a fixed rod and a shoveling plate, one end of the fixed rod is connected with the connecting sleeve, the other end of the fixed rod is connected with the shoveling plate in a direction, and a 45-degree angle is formed between the center line of the long side of the shoveling plate and the axis of the fixed rod.

6. The dry deacidification apparatus of a waste incineration power plant according to any one of claims 1 to 5, wherein: the inner wall of the straight cylinder part is provided with a guide plate which is spiral; the guide plate is provided with a drainage hole which is arranged along the axial direction of the mixer; the drainage holes are uniformly distributed along the circumferential direction of the mixer.

7. The dry deacidification apparatus of a waste incineration power plant according to claim 6, wherein: the medicament uniform distribution mechanism comprises an annular distribution pipe and a shunt pipe; the annular distribution pipe is arranged at the lower end in the straight cylinder part and is concentric with the straight cylinder part; the shunt tubes are uniformly distributed along the circumferential direction of the annular distribution tube, and the outlet ends of the shunt tubes face the circle center of the annular distribution tube.

8. The dry deacidification apparatus of a waste incineration power plant according to claim 7, wherein: the outlet end of the shunt tube is inclined downwards, so that the shunt tube forms an included angle of 45 degrees with the horizontal direction.

9. The dry deacidification apparatus of a waste incineration power plant according to claim 8, wherein: the outlet end of the shunt tube is provided with a spray head, and the spray head comprises a connecting pipe, a buffer cavity and a dispersing part; the inlet end of the connecting pipe is in threaded connection with the outlet end of the shunt pipe, the buffer cavity is duckbill-shaped, the inlet end of the buffer cavity is communicated with the outlet end of the connecting pipe, and the inlet end of the dispersing part is communicated with the outlet end of the buffer cavity.