Domestic waste combustion flue gas desulfurization device

Abstract

This utility model provides a desulfurization device for flue gas from municipal solid waste combustion, comprising: a combustion component and a desulfurization component. Insulating bricks are fixedly installed inside the combustion component. Both the combustion component and the insulating bricks are connected through multiple air inlet pipes. An ash removal mechanism is installed inside the combustion component. The top of the desulfurization component is fixedly installed to a support, and an end cap is fixedly installed in the middle of the support. The end cap is fixedly connected to a water inlet pipe, and a spraying mechanism is rotatably connected inside the end cap. This application uses a combustion component to incinerate municipal solid waste and sets up multiple air inlet pipes for the supply of air and oxygen, which can achieve complete combustion to improve the treatment effect. Combustion residue is collected by a guide plate to ensure air intake and improve combustion completeness. The desulfurization component absorbs harmful gases in the flue gas. Multiple ring pipes are used to arrange the nozzles, and the nozzles are designed so that the air pressure generated during spraying drives the ring pipes to rotate, improving the desulfurization effect.

Description

Technical Field

[0001] This utility model relates to a desulfurization device for flue gas from municipal solid waste combustion, belonging to the field of waste treatment technology. Background Technology

[0002] Desulfurization of flue gas from municipal solid waste incineration is a crucial step in reducing sulfur dioxide (SO2) emissions. Semi-dry desulfurization involves atomizing lime slurry and injecting it into a reaction tower to react with SO2 in the flue gas. After the moisture evaporates, the dry product is collected. This method is primarily used for the combustion and desulfurization of municipal solid waste in high-altitude areas, achieving a desulfurization efficiency of 85%-90%, combining the advantages of both dry and wet methods. In high-altitude areas, the desulfurization of flue gas from municipal solid waste incineration requires additional consideration of the impact of environmental factors such as low pressure, low temperature, and oxygen deficiency on the process. Low oxygen content may affect oxidation reactions (e.g., CaSO3→CaSO4) in semi-dry / wet desulfurization, necessitating increased forced ventilation or extended residence time.

[0003] When municipal solid waste is incinerated, toxic gases such as sulfur dioxide are emitted, which seriously affects the quality control. Currently, most waste is treated with desulfurization towers. However, when municipal solid waste is incinerated in high-altitude areas, incomplete combustion may affect the decomposition effect, and the generated impurities are not easy to be discharged, which may affect subsequent treatment. In addition, the desulfurization effect may be reduced due to low pressure during the desulfurization process, thus affecting the desulfurization effect. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides a desulfurization device for flue gas from municipal solid waste combustion.

[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0006] This utility model provides a desulfurization device for flue gas from municipal solid waste combustion, comprising:

[0007] The combustion assembly has a heat insulation brick fixedly installed inside it. Both the combustion assembly and the heat insulation brick are connected through multiple air inlet pipes. The bottom of the heat insulation brick is provided with a guide plate, and the combustion assembly below the guide plate is provided with an ash discharge mechanism.

[0008] The desulfurization component is fixedly connected to the combustion component through a connecting pipe. The bottom of the desulfurization component is provided with a collection mechanism. The top of the desulfurization component is fixedly installed on a bracket. An end is fixedly installed in the middle of the bracket. The end is fixedly connected to a water inlet pipe and a spraying mechanism is rotatably connected inside the end.

[0009] In this technical solution, the combustion assembly is provided with a flow equalization plate and a support plate, and both the flow equalization plate and the support plate are provided with multiple fine holes. The flow equalization plate and the support plate are respectively installed on the top and bottom of the heat insulation brick.

[0010] In this technical solution, the ash discharge mechanism consists of an ash discharge port, which penetrates the bottom of the combustion assembly and communicates with the guide plate. The outer end of the ash discharge port is fitted and connected to the sealing plate. The sealing plate is fixedly connected to the scraper through a crossbar, and the scraper is located below the guide plate.

[0011] In this technical solution, there are several air intake pipes, and all of the air intake pipes are arranged above the support plate.

[0012] In this technical solution, the collection mechanism includes a collection hopper, which is located below the connecting pipe. The collection hopper is fixedly installed at the bottom of the desulfurization component, and the bottom of the collection hopper is fixedly connected to the slag discharge pipe, which passes through the bottom of the desulfurization component.

[0013] In this technical solution, the top of the desulfurization component is fixedly connected to the flue gas pipe, the bracket is set below the flue gas pipe, and the desulfurization component is connected through the water inlet pipe.

[0014] In this technical solution, the spraying mechanism consists of a movable pipe, a branch pipe, and a connecting pipe. The top end of the movable pipe is rotatably connected to the inside of the end cap, and the bottom end of the movable pipe is fixedly connected to the connecting pipe through the branch pipe.

[0015] In this technical solution, the movable tube is connected to the interior of the end, and the movable tube is connected to several evenly distributed branch tubes.

[0016] In this technical solution, the two ends of the connecting pipe are fixedly connected to the outer ring pipe and the inner ring pipe respectively, and the connecting pipe is evenly arranged between the outer ring pipe and the inner ring pipe.

[0017] In this technical solution, the bottom of both the outer ring tube and the inner ring tube are fixedly connected to several evenly distributed nozzles, and the nozzles located below the outer ring tube are all arc-shaped structures.

[0018] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0019] The positive and progressive effects of this utility model are as follows:

[0020] The aforementioned desulfurization device for municipal solid waste combustion uses combustion components to treat municipal solid waste and is equipped with multiple air inlet pipes for the supply of air and oxygen, which can achieve complete combustion to improve the treatment effect. Combustion residue is collected by a guide plate, and an ash removal mechanism is set up to facilitate subsequent cleaning. This ensures that air enters effectively to improve the completeness of combustion and improve the treatment effect of municipal solid waste in plateau areas. The desulfurization components absorb harmful gases in the flue gas, and multiple ring pipes are used to arrange the nozzles to ensure the uniformity of the desulfurizing agent sprayed. At the same time, the nozzles are set so that the air pressure generated during spraying drives the ring pipes to rotate, making the desulfurizing agent more evenly distributed in the desulfurization components and effectively contacting the flue gas to improve the desulfurization effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the half-section structure of this utility model.

[0023] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Combustion assembly; 2. Insulating brick; 3. Feed inlet; 4. Flow equalization plate; 5. Support plate; 6. Guide plate; 7. Air inlet pipe; 8. Ash discharge port; 9. Sealing plate; 10. Scraper; 11. Connecting pipe; 12. Desulfurization assembly; 13. Collection hopper; 14. Slag discharge pipe; 15. Flue gas exhaust pipe; 16. Support; 17. End; 18. Water inlet pipe; 19. Movable pipe; 20. Branch pipe; 21. Connecting pipe; 22. Outer ring pipe; 23. Inner ring pipe; 24. Nozzle. Detailed Implementation

[0026] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0027] like Figure 1-3 As shown, the desulfurization device for flue gas from municipal solid waste combustion includes:

[0028] Combustion assembly 1, wherein a heat insulation brick 2 is fixedly installed inside the combustion assembly 1, and both the combustion assembly 1 and the heat insulation brick 2 are connected through multiple air inlet pipes 7. A guide plate 6 is provided at the bottom of the heat insulation brick 2, and an ash discharge mechanism is provided inside the combustion assembly 1 below the guide plate 6.

[0029] The desulfurization component 12 is fixedly connected to the combustion component 1 via a connecting pipe 11. The bottom of the desulfurization component 12 is provided with a collection mechanism. The top of the desulfurization component 12 is fixedly installed to a bracket 16. An end 17 is fixedly installed in the middle of the bracket 16. The end 17 is fixedly connected to a water inlet pipe 18, and a spraying mechanism is rotatably connected inside the end 17.

[0030] The combustion assembly 1 is equipped with a flow equalization plate 4 and a support plate 5. Both the flow equalization plate 4 and the support plate 5 have multiple fine holes. The flow equalization plate 4 and the support plate 5 are respectively installed on the top and bottom of the heat insulation brick 2. The ash discharge mechanism consists of an ash discharge port 8. The ash discharge port 8 penetrates the bottom of the combustion assembly 1 and communicates with the guide plate 6. The outer end of the ash discharge port 8 is attached to the sealing plate 9. The sealing plate 9 is fixedly connected to the scraper 10 through a crossbar. The scraper 10 is located below the guide plate 6.

[0031] In this technical solution, the flow equalization plate 4 is used for the uniform distribution of flue gas and to filter larger impurities. The dust generated during combustion falls from the support plate 5 into the guide plate 6 and enters the ash discharge port 8. After use, the sealing plate 9 is opened and the scraper 10 is moved out by pulling the crossbar, thereby scraping out the combustion dust and other materials to ensure the subsequent combustion effect.

[0032] The number of air inlet pipes 7 is several, and all of the air inlet pipes 7 are arranged above the support plate 5; the collection mechanism includes a collection hopper 13, which is arranged below the connecting pipe 11. The collection hopper 13 is fixedly installed at the bottom of the desulfurization component 12, and the bottom of the collection hopper 13 is fixedly connected to the slag discharge pipe 14, which penetrates the bottom of the desulfurization component 12; the top of the desulfurization component 12 is fixedly connected to the flue gas pipe 15, and the bracket 16 is arranged below the flue gas pipe 15, and the desulfurization component 12 is connected to the water inlet pipe 18.

[0033] In this technical solution, an air pump with a valve is connected to the air inlet pipe 7. During combustion, air or oxygen is delivered to the combustion component 1 to achieve full combustion in high-altitude areas. After the flue gas is delivered to the desulfurization component 12 by the connecting pipe 11, the precipitated impurities are collected by the collection hopper 13 and can be discharged through the slag discharge pipe 14. The purified gas is discharged from the flue gas pipe 15.

[0034] The spraying mechanism consists of a movable pipe 19, branch pipes 20, and connecting pipes 21. The top end of the movable pipe 19 is rotatably connected to the inside of the end cap 17, and the bottom end of the movable pipe 19 is fixedly connected to the connecting pipe 21 through the branch pipes 20. The movable pipe 19 communicates with the inside of the end cap 17 and is connected to several evenly distributed branch pipes 20. The two ends of the connecting pipe 21 are fixedly connected to the outer ring pipe 22 and the inner ring pipe 23, respectively, and the connecting pipe 21 is evenly arranged between the outer ring pipe 22 and the inner ring pipe 23. The bottom of the outer ring pipe 22 and the inner ring pipe 23 are fixedly connected to several evenly distributed nozzles 24, and the nozzles 24 located below the outer ring pipe 22 are all arc-shaped.

[0035] In this technical solution, while the flue gas is being transported, an external water pump is connected to the inlet pipe 18 to transport the desulfurizing agent from the inlet pipe 18 to the end 17, and then through the movable pipe 19 to multiple branch pipes 20. The agent is then transported through the connecting pipe 21 to the outer ring pipe 22 and the inner ring pipe 23 respectively, so that the desulfurizing agent is sprayed out from multiple nozzles 24. At the same time, the nozzles 24 below the outer ring pipe 22 have an arc-shaped structure, which causes the generated reaction force to drive the movable pipe 19 to rotate inside the end pipe. The resulting rotation makes the atomized desulfurizing agent evenly distributed in the desulfurization component 12, improving the effect of full contact with the flue gas, thereby improving the desulfurization performance and minimizing the problem of poor desulfurization effect caused by low gas pressure.

[0036] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A desulfurization device for flue gas from municipal solid waste combustion, characterized in that, include: Combustion assembly (1), in which heat insulation brick (2) is fixedly installed, and both combustion assembly (1) and heat insulation brick (2) are connected through multiple air inlet pipes (7). The bottom of the heat insulation brick (2) is provided with a guide plate (6), and the combustion assembly (1) below the guide plate (6) is provided with an ash discharge mechanism. A desulfurization component (12) is fixedly connected to a combustion component (1) via a connecting pipe (11). A collection mechanism is provided at the bottom of the desulfurization component (12). The top of the desulfurization component (12) is fixedly installed on a bracket (16). An end (17) is fixedly installed in the middle of the bracket (16). The end (17) is fixedly connected to a water inlet pipe (18), and a spraying mechanism is rotatably connected inside the end (17).

2. The desulfurization device for municipal solid waste combustion flue gas as described in claim 1, characterized in that: The combustion assembly (1) is provided with a flow equalization plate (4) and a support plate (5) respectively. Both the flow equalization plate (4) and the support plate (5) are provided with multiple fine holes. The flow equalization plate (4) and the support plate (5) are respectively installed on the top and bottom of the heat insulation brick (2).

3. The desulfurization device for municipal solid waste combustion flue gas as described in claim 1, characterized in that: The ash discharge mechanism consists of an ash discharge port (8), which penetrates the bottom of the combustion assembly (1) and is connected to the guide plate (6). The outer end of the ash discharge port (8) is fitted and connected to the sealing plate (9). The sealing plate (9) is fixedly connected to the scraper (10) through a crossbar, and the scraper (10) is located below the guide plate (6).

4. The desulfurization device for municipal solid waste combustion flue gas as described in claim 1, characterized in that: The number of air intake pipes (7) is several, and all of the air intake pipes (7) are arranged above the support plate (5).

5. The desulfurization device for municipal solid waste combustion flue gas as described in claim 1, characterized in that: The collection mechanism includes a collection hopper (13), which is located below the connecting pipe (11). The collection hopper (13) is fixedly installed at the bottom of the desulfurization component (12). The bottom of the collection hopper (13) is fixedly connected to the slag discharge pipe (14), and the slag discharge pipe (14) penetrates the bottom of the desulfurization component (12).

6. The desulfurization device for municipal solid waste combustion flue gas as described in claim 1, characterized in that: The top of the desulfurization component (12) is fixedly connected to the flue pipe (15), the bracket (16) is set below the flue pipe (15), and the desulfurization component (12) is connected through the water inlet pipe (18).

7. The desulfurization device for municipal solid waste combustion flue gas as described in claim 1, characterized in that: The spraying mechanism consists of a movable pipe (19), a branch pipe (20) and a connecting pipe (21). The top end of the movable pipe (19) is rotatably connected to the end head (17), and the bottom end of the movable pipe (19) is fixedly connected to the connecting pipe (21) through the branch pipe (20).

8. The desulfurization device for municipal solid waste combustion flue gas as described in claim 7, characterized in that: The movable tube (19) is internally connected to the end (17), and the movable tube (19) is connected to several evenly distributed branch tubes (20).

9. The desulfurization device for municipal solid waste combustion flue gas as described in claim 7, characterized in that: The two ends of the connecting pipe (21) are fixedly connected to the outer ring pipe (22) and the inner ring pipe (23) respectively, and the connecting pipe (21) is evenly arranged between the outer ring pipe (22) and the inner ring pipe (23).

10. The desulfurization device for municipal solid waste combustion flue gas as described in claim 9, characterized in that: The bottom of both the outer ring tube (22) and the inner ring tube (23) are fixedly connected to several evenly distributed nozzles (24), and the nozzles (24) located below the outer ring tube (22) are all arc-shaped structures.

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