Deacidification device for medical waste incineration

Abstract

The utility model discloses a deacidification device for medical waste incineration. The deacidification device solves the problem that in the prior art, crystals of a deacidification tower are not cleaned in time in the deacidification process. The deacidification device comprises a deacidification tower, a flue gas inlet pipe and a spraying mechanism matched with the flue gas inlet pipe are arranged on the upper portion of the deacidification tower, an exhaust pipe and an ash outlet are arranged on the lower portion of the deacidification tower, the exhaust pipe extends into a liquid box, an ash removal mechanism is further arranged on the lower portion of the deacidification tower and detachably arranged on the ash outlet, and the ash removal mechanism is connected with the deacidification tower. And a tower wall cleaning mechanism is also arranged on the deacidification tower. The deacidification tower is cleaned through cooperation of the ash removal mechanism and the tower wall cleaning mechanism, the problem that crystallization treatment is not in time can be avoided to the maximum extent, the ash outlet is used for removing crystals in the tower, and the exhaust pipe is arranged in the liquid box, so that exhausted gas is further removed through the liquid box; and then tail gas generated by medical waste incineration is discharged into air, and the deacidification effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical waste treatment, in particular to a deacidification device for incinerating medical waste. Background Art

[0002] The hazards of medical waste include spreading diseases and polluting the environment. Incineration and non-incineration are the two major methods of medical waste disposal at this stage. Incineration is applicable to a variety of medical wastes, and the process equipment is relatively mature and widely used. Combined with the specific conditions in my country and the process equipment used by the centralized medical waste disposal plants that have been built in various places, incineration is still the preferred treatment method at this stage. The advantages of medical waste incineration are that it can effectively decompose long-chain organic matter and kill pathogenic bacteria; the heat released by combustion can be used to generate electricity, etc. The incineration flue gas purification system generally includes the following processes: quenching, acid removal, adsorption and dust removal. To remove acid-containing substances (mainly hydrogen chloride) in flue gas, wet, semi-dry or dry methods can be used. The wet method is to prepare the absorbent into a solution or slurry, and then spray it in large quantities into purification equipment such as sieve plate towers, spray towers, and packed towers. At this time, the acidic pollutants in the flue gas are neutralized and absorbed and removed. The absorbent often uses caustic soda or quicklime. If caustic soda or quicklime cannot be cleaned in time during the acid removal process, it is easy to cause crystallization, which in turn affects the acid removal effect.

[0003] In the prior art, a Chinese utility model with announcement number CN 212731672 U and announcement date 2021.03.19 discloses a double wet deacidification tower for hazardous waste incineration, which relates to the field of waste incineration. In order to solve the problem that the flue gas desulfurization rate is not good when the flue gas volume is large, the utility model comprises a spray tower, and an alkali solution dosing system arranged in the spray tower for spraying alkali solution into the internal cavity of the spray tower. A smoke inlet is arranged at the lower end of the spray tower, and a smoke outlet is arranged at the top of the spray tower. The spray tower is connected to a smoke conveying pipe at the smoke outlet, and the other end of the smoke conveying pipe is connected to a neutralization tower, and the smoke conveying pipe is connected to the bottom end of the neutralization tower. A smoke exhaust port is opened at the upper end of the neutralization tower, and an alkali solution dosing system for spraying alkali solution into the neutralization tower is arranged inside the neutralization tower, and the two alkali solution dosing systems are controlled separately. Although this patent doubles the flue gas washing time in the tower through double-tower washing, ensuring that the flue gas acid gas and liquid alkali are fully washed, greatly reducing the flue gas sulfur content, but in actual use, crystallization occurs due to untimely cleaning, thus affecting the acid removal effect or causing problems such as clogging of the spray head. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a deacidification device for incineration of medical waste, which solves the problem of untimely cleaning of crystals in the deacidification tower during the deacidification process in the prior art.

[0005] The technical solution of the utility model is achieved as follows: a deacidification device for incineration of medical waste, comprising a deacidification tower, the upper part of the deacidification tower is provided with a smoke inlet pipe and a spray mechanism coordinated with the smoke inlet pipe, the lower part of the deacidification tower is provided with an exhaust pipe and an ash outlet, the exhaust pipe extends into a liquid tank, the lower part of the deacidification tower is also provided with an ash removal mechanism, the ash removal mechanism is detachably arranged on the ash outlet, and the deacidification tower is also provided with a tower wall cleaning mechanism.

[0006] Furthermore, the tower wall cleaning mechanism includes at least one external gear ring, which is rotatably arranged on the deacidification tower. A seal is also provided between the external gear ring and the deacidification tower. A cleaning rod that fits tightly with the inner wall of the deacidification tower is connected to the inner ring of the external gear ring, and the external gear ring is connected to a driving member.

[0007] Furthermore, the driving member includes a driving motor and a driving gear, the driving gear is meshed with the outer gear ring, a rotating shaft is connected to the middle of the driving gear, and the driving motor is connected to the rotating shaft through a gear pair.

[0008] Furthermore, the sealing member comprises a sealing ring, one end of which is mounted on the deacidification tower via an alloy spring, and the other end of which is slidably matched with a limit ring arranged on the outer gear ring.

[0009] Furthermore, the ash removal mechanism includes a stepper motor and an arc-shaped cleaning rod. The stepper motor is located at the bottom of the deacidification tower. The output shaft of the stepper motor extends into the deacidification tower and is connected to the cleaning rod. The cleaning rod is connected to a sealing plate for sealing the ash outlet.

[0010] Furthermore, the bottom of the deacidification tower is a conical bottom plate, and the lower part of the conical bottom plate is provided with an ash removal box corresponding to the ash outlet.

[0011] Furthermore, the liquid tank includes a first liquid storage tank and a second liquid storage tank, the exhaust pipe is located in the first liquid storage tank, one end of the first liquid storage tank is connected to the second liquid storage tank, and the other end of the liquid storage tank is connected to the dust removal box.

[0012] Furthermore, a circulation pipeline is provided between the first liquid storage tank and the second liquid storage tank.

[0013] Furthermore, the circulation pipeline includes a circulation pipe, the liquid inlet end of the circulation pipe is connected to water pump 2, water pump 2 extends into the second liquid storage tank, the liquid outlet end of the circulation pipe extends into the first liquid storage tank, and the liquid outlet end of the circulation pipe is located below the dust removal box.

[0014] Furthermore, the spray mechanism includes an atomizing nozzle and a liquid inlet pipe, one end of the liquid inlet pipe is connected to the atomizing nozzle, the atomizing nozzle is located at the top of the deacidification tower, and the other end of the liquid inlet pipe is connected to a water pump 1, which is arranged in the second liquid storage tank.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model realizes the cleaning of the deacidification tower by cooperating with the ash removal mechanism and the tower wall cleaning mechanism, which can avoid the problem of untimely crystallization treatment to the greatest extent. The ash outlet is used to remove the crystals in the tower. The exhaust pipe is arranged in the liquid box, so that the exhausted gas is further removed through the liquid outlet box, and then the exhaust gas generated by the incineration of medical waste is discharged into the air, and the deacidification effect is good.

[0017] 2. The cleaning rod is fixed to the outer gear ring, and the driving part drives the outer gear ring to rotate, thereby driving the cleaning rod to clean the inner wall of the deacidification tower, and can clean the liquid and on the tower wall. The cleaning effect is good, and in the subsequent process, only the cleaning rod needs to be cleaned, which minimizes the influence of crystallization on the tower wall on deacidification.

[0018] 3. The driving gear cooperates with the dynamic seal of the deacidification tower through the seal, which ensures the sealing of the deacidification tower while not affecting the deacidification of the deacidification tower. The alloy spring and the sealing ring cooperate to further strengthen the sealing of the deacidification tower.

[0019] 4. The bottom of the deacidification tower is a conical bottom plate, which is convenient for ash removal.

[0020] 5. The stepper motor cooperates with the arc-shaped cleaning rod to clean the bottom ash on the conical bottom plate. The cleaning rod is connected to a sealing plate that cooperates with the ash outlet to ensure the sealing of the deacidification tower during use, so that the exhaust gas after deacidification treatment is discharged from the exhaust pipe.

[0021] 6. The first liquid storage tank and the second liquid storage tank cooperate to facilitate the recycling of precipitation and deacidification agents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0025] Figure 3 for Figure 1 Schematic diagram of the cross section of BB.

[0026] In the figure: 1. flue gas inlet pipe, 2. atomizing nozzle, 3. deacidification tower, 4. cleaning rod, 5. seal, 5-1. sealing ring, 5-2. alloy spring, 6. outer gear ring, 6-1. limit ring, 7. rotating shaft, 8. driving motor, 9. mounting plate, 10. driving gear, 11. cleaning rod, 11-1. blocking plate, 12. conical bottom plate, 13. mechanical seal, 14. stepping motor, 15. ash outlet, 16. ash removal box, 17. exhaust duct, 18. first liquid storage tank, 19. filter plate, 20. second liquid storage tank, 21. liquid inlet pipe, 22. water pump one, 23. circulation pipe, 24. water pump two, 25. thrust bearing. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 As shown, in Example 1, a deacidification device for incineration of medical waste includes a deacidification tower 3, a smoke inlet pipe 1 and a spray mechanism matched with the smoke inlet pipe 1 are provided at the upper part of the deacidification tower 3, an exhaust pipe 17 and an ash outlet 15 are provided at the lower part of the deacidification tower 3, the exhaust pipe 17 extends into the liquid box, and an ash removal mechanism is also provided at the lower part of the deacidification tower 3, the ash removal mechanism is detachably arranged on the ash outlet 15, and a tower wall cleaning mechanism is also provided on the deacidification tower 3. The utility model realizes the cleaning of the deacidification tower 3 by cooperating with the ash removal mechanism and the tower wall cleaning mechanism, which can avoid the problem of untimely crystallization treatment to the greatest extent, the ash outlet 15 is used to remove crystals in the tower, the exhaust pipe 17 is arranged in the liquid box, so that the exhausted gas is further removed through the liquid outlet box, and then the tail gas generated by the incineration of medical waste is discharged into the air, and the deacidification effect is good.

[0029] Specifically, the flue gas enters the deacidification tower 3 after passing through the quenching tower, the purpose of which is to remove the acidic gas in the flue gas. The flue gas enters from the flue gas inlet pipe 1, and under the action of the spray mechanism, the flue gas and the deacidifier are combined for deacidification. Then, during the deacidification process, the tower wall cleaning mechanism can clean the tower wall. After a period of time, the flue gas inlet pipe 1 is closed, and the ash removal mechanism is started to remove the ash from the bottom of the deacidification tower 3, so that the ash at the bottom of the deacidification tower 3 is discharged through the ash outlet 15, which can prevent crystallization on the tower wall from affecting the ash removal effect.

[0030] like Figure 1As shown, embodiment 2, a deacidification device for incineration of medical waste, the tower wall cleaning mechanism includes two upper and lower outer gear rings 6, the outer gear ring 6 is rotatably arranged on the deacidification tower 3, a thrust bearing 25 is arranged between the outer gear ring and the deacidification tower, the thrust bearing 25 is used to ensure the rotation of the outer gear ring 6, the deacidification tower 3 wraps the outer gear ring 6 to prevent the outer gear from being exposed to the outdoors to affect the rotation effect, and at the same time further ensures the sealing of the deacidification tower 3, a sealing member 5 is also arranged between the outer gear ring 6 and the deacidification tower 3, the inner ring of the outer gear ring 6 is connected with a cleaning rod 4 that fits tightly with the inner wall of the deacidification tower 3, and the outer gear ring 6 is connected with a driving member. The cleaning rod 4 is fixed to the outer gear ring 6, and the driving member drives the outer gear ring 6 to rotate, thereby driving the cleaning rod 4 to clean the inner wall of the deacidification tower 3, which can clean the liquid and on the tower wall, with good cleaning effect, and in the subsequent process, only the cleaning rod needs to be cleaned, which can avoid the influence of crystallization on the tower wall on deacidification to the greatest extent.

[0031] In this embodiment, the driving member includes a driving motor 8 and a driving gear 10. The driving motor 8 is mounted on a mounting plate 9. The mounting plate 9 is mounted on the outside of the deacidification tower 3. The driving gear 10 meshes with the outer gear ring 6. The middle of the driving gear 10 is connected with a rotating shaft 7. The rotating shaft 7 passes through the mounting plate 9. A rotating shaft 7 is provided between the rotating shaft 7 and the mounting plate 9, which can be used to position the rotating shaft 7 to prevent the shaking of the rotating shaft 7 during rotation and avoid affecting the matching between the driving gear 10 and the outer gear ring 6. The driving motor 8 is connected to the rotating shaft 7 through a gear pair. The sealing member 5 includes a sealing ring 5-1. One end of the sealing ring 5-1 is mounted on the deacidification tower 3 through an alloy spring 5-2. The alloy spring 5-2 drags the sealing ring 5-1 to match with the driving gear 10 to ensure the sealing inside the deacidification tower 3. The other end of the sealing ring 5-1 is slidably matched with an upper limit ring 6-1 provided on the outer gear ring 6. The driving gear 10 cooperates with the deacidification tower 3 through the seal 5 to ensure the sealing of the deacidification tower 3 without affecting the deacidification of the deacidification tower 3. The alloy spring 5-2 cooperates with the sealing ring 5-1 to further strengthen the sealing of the deacidification tower 3. The sealing effect of the deacidification tower 3 can make the treated exhaust gas be discharged through the exhaust pipe 17. The exhaust pipe 17 is located in the deacidification agent. When the flue gas enters, the exhaust gas can be discharged into the deacidification agent through the exhaust pipe 17. Under the action of the deacidification agent, the exhaust gas is further deacidified to ensure that the discharged exhaust gas meets the industry standards.

[0032] The other structures are the same as those in Example 1.

[0033] like Figure 1As shown, Example 3 is a deacidification device for incineration of medical waste, wherein the ash removal mechanism includes a stepper motor 14 and an arc-shaped ash removal rod 11, the stepper motor 14 is located at the bottom of the deacidification tower 3, the output shaft of the stepper motor 14 extends into the deacidification tower 3 and is connected to the ash removal rod 11, and a mechanical seal 13 is provided at the end of the stepper motor 14 to ensure the stable operation of the stepper motor 14. A plugging plate for blocking the ash outlet 15 is connected to the ash removal rod 11. The plugging plate is fixed to the deacidification tower 3 by bolts during the deacidification process, and the plugging plate is opened during the ash removal process to allow the ash to be removed. The plugging plate is connected to the ash removal rod 11, and the ash removal effect is ensured by the weight of the plugging plate, so as to avoid the tail of the ash removal rod 11 from lifting during ash removal, which fails to achieve the ash removal effect. The bottom of the deacidification tower 3 is a conical bottom plate 12, and the bottom of the deacidification tower 3 is a conical bottom plate 12, which is convenient for ash removal. The lower part of the conical bottom plate 12 is provided with an ash removal box 16 corresponding to the ash outlet 15. The stepper motor 14 cooperates with the arc-shaped ash cleaning rod 11 to clean the bottom ash on the conical bottom plate 12. The ash cleaning rod 11 is connected to a sealing plate that cooperates with the ash outlet 15 to ensure the sealing of the deacidification tower 3 during use, so that the exhaust gas after deacidification treatment is discharged from the exhaust pipe 17.

[0034] The other structures are the same as those in Example 2.

[0035] like Figure 1 As shown, embodiment 4, a deacidification device for incineration of medical waste, the liquid tank includes a first liquid storage tank 18 and a second liquid storage tank 20, the exhaust pipe 17 is located in the first liquid storage tank 18, one end of the first liquid storage tank 18 is connected to the second liquid storage tank 20, and the other end of the liquid storage tank is connected to the ash removal box 16. A filter plate 19 is provided between the first liquid storage tank 18 and the second liquid storage tank 20 to ensure that the water pump will not be blocked during the use of the deacidification agent. The first liquid storage tank 18 and the second liquid storage tank 20 cooperate to facilitate the recycling of precipitation and deacidification agents. A circulation pipeline 23 is also provided between the first liquid storage tank 18 and the second liquid storage tank 20. The circulation pipeline 23 includes a circulation pipe 23, the liquid inlet end of the circulation pipe 23 is connected to a water pump 24, the water pump 24 extends into the second liquid storage tank 20, the liquid outlet end of the circulation pipe 23 extends into the first liquid storage tank 18, and the liquid outlet end of the circulation pipe 23 is located below the ash removal box 16. The ash removal box 16 is detachably mounted on the first liquid storage box 18 by bolts to facilitate slag removal.

[0036] In this embodiment, the spray mechanism includes an atomizing nozzle 2 and a liquid inlet pipe 21. The atomizing nozzle 2 is an existing structure and can be used directly. The atomizing nozzle 2 is located above the flue gas inlet pipe 1, so that the sprayed deacidifying agent can be fully integrated with the flue gas. One end of the liquid inlet pipe 21 is connected to the atomizing nozzle 2, and the atomizing nozzle 2 is located at the top of the deacidifying tower 3. The other end of the liquid inlet pipe 21 is connected to a water pump 22, which is arranged in the second liquid storage tank 20. The water pump is used for the circulation of the deacidifying agent.

[0037] The other structures are the same as those in Example 3.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deacidification device for incineration of medical waste, characterized in that: The deacidification tower (3) comprises a smoke inlet pipe (1) and a spray mechanism cooperating with the smoke inlet pipe (1) at the upper portion of the deacidification tower (3); an exhaust pipe (17) and an ash outlet (15) are provided at the lower portion of the deacidification tower (3); the exhaust pipe (17) extends into a liquid tank; an ash removal mechanism is also provided at the lower portion of the deacidification tower (3); the ash removal mechanism is detachably arranged on the ash outlet (15); and a tower wall cleaning mechanism is also provided on the deacidification tower (3).

2. The deacidification device for incineration of medical waste according to claim 1, characterized in that: The tower wall cleaning mechanism comprises at least one outer gear ring (6), the outer gear ring (6) being rotatably arranged on the deacidification tower (3), a sealing member (5) being arranged between the outer gear ring (6) and the deacidification tower (3), a cleaning rod (4) being closely fitted to the inner wall of the deacidification tower (3) being connected to the inner ring of the outer gear ring (6), and the outer gear ring (6) being connected to a driving member.

3. The deacidification device for incineration of medical waste according to claim 2, characterized in that: The driving member comprises a driving motor (8) and a driving gear (10), the driving gear (10) meshing with the outer gear ring (6), a rotating shaft (7) being connected to the middle of the driving gear (10), and the driving motor (8) being connected to the rotating shaft (7) via a gear pair.

4. The deacidification device for incineration of medical waste according to claim 3, characterized in that: The sealing member (5) comprises a sealing ring (5-1), one end of the sealing ring (5-1) being mounted on the deacidification tower (3) via an alloy spring (5-2), and the other end of the sealing ring (5-1) being slidably engaged with an upper limit ring (6-1) provided on the outer gear ring (6).

5. The deacidification device for incineration of medical waste according to any one of claims 1 to 4, characterized in that: The ash removal mechanism comprises a stepper motor (14) and an arc-shaped ash cleaning rod (11); the stepper motor (14) is located at the bottom of the deacidification tower (3); the output shaft of the stepper motor (14) extends into the deacidification tower (3) and is connected to the ash cleaning rod (11); the ash cleaning rod (11) is connected to a sealing plate (11-1) for sealing an ash outlet (15).

6. The deacidification device for incineration of medical waste according to claim 5, characterized in that: The bottom of the deacidification tower (3) is a conical bottom plate (12), and a dust removal box (16) corresponding to the dust outlet (15) is provided at the lower part of the conical bottom plate (12).

7. The deacidification device for incineration of medical waste according to any one of claims 1 to 4 and 6, characterized in that: The liquid tank comprises a first liquid storage tank (18) and a second liquid storage tank (20), the exhaust pipe (17) is located in the first liquid storage tank (18), one end of the first liquid storage tank (18) is connected to the second liquid storage tank (20), and the other end of the liquid storage tank is connected to the dust removal box (16).

8. The deacidification device for incineration of medical waste according to claim 7, characterized in that: A circulation pipeline is also provided between the first liquid storage tank (18) and the second liquid storage tank (20).

9. The deacidification device for incineration of medical waste according to claim 8, characterized in that: The circulation pipeline comprises a circulation pipe (23), the liquid inlet end of the circulation pipe (23) is connected to a second water pump (24), the second water pump (24) extends into the second liquid storage tank (20), the liquid outlet end of the circulation pipe (23) extends into the first liquid storage tank (18), and the liquid outlet end of the circulation pipe (23) is located below the dust removal tank (16).

10. The deacidification device for incineration of medical waste according to claim 9, characterized in that: The spray mechanism comprises an atomizing nozzle (2) and a liquid inlet pipe (21), one end of the liquid inlet pipe (21) is connected to the atomizing nozzle (2), the atomizing nozzle (2) is located at the top of the deacidification tower (3), and the other end of the liquid inlet pipe (21) is connected to a water pump (22), which is arranged in the second liquid storage tank (20).

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