Flue gas purification device of garbage incinerator

Abstract

The utility model belongs to the technical field of flue gas purification devices, and discloses a garbage incinerator flue gas purification device which comprises an incinerator body, a purification bin and a purification assembly, the incinerator body is used for garbage incineration, the purification bin is communicated with the incinerator body and used for flue gas purification and emission, and the purification assembly is communicated with the purification bin. The purification assembly comprises a flow guide part, a reaction part, an ammonia spraying grid, a flow dividing part and a flow dividing bin, the flow guide part is communicated with the purification bin, the flow guide part is sleeved with the reaction part, the ammonia spraying grid is connected to the purification bin, the flow dividing part is communicated with the ammonia spraying grid, the flow dividing bin is communicated with the flow dividing part, and the flow dividing part is communicated with the flow dividing bin. The concentration of nitric oxide in flue gas can be effectively reduced, so that purification treatment of the flue gas is achieved, the total emission amount of pollutants is reduced, it is guaranteed that no pollution is caused to the environment, and the healthy living environment of surrounding residents is guaranteed.

Description

A waste incinerator flue gas purification device Technical Field

[0001] This utility model belongs to the technical field of flue gas purification devices, and in particular relates to a flue gas purification device for a waste incinerator. Background Technology

[0002] The rapid pace of urbanization has made urban waste disposal a very challenging issue. Currently, incineration is the recommended method for waste disposal. However, the flue gas produced by waste incineration contains a large number of pathogens and harmful substances, which can affect social harmony and climate stability. In particular, if the treatment is not up to standard, it will cause increasingly serious environmental pollution. At present, the incineration rate of urban waste has reached more than 35%. Currently, waste is incinerated in incinerators.

[0003] However, existing waste incinerators lack effective flue gas purification devices and cannot effectively control the concentration of nitrogen oxides in the flue gas, resulting in serious environmental pollution, severely affecting air quality, and consequently having an adverse impact on the health of surrounding residents. Summary of the Invention

[0004] This utility model addresses the problem that existing waste incinerators lack effective flue gas purification devices, failing to effectively control the concentration of nitrogen oxides in the flue gas, thus causing serious environmental pollution, severely affecting air quality, and adversely impacting the health of surrounding residents. The following technical solution is proposed:

[0005] A waste incinerator flue gas purification device includes:

[0006] The incinerator body, used for incinerating waste;

[0007] The purification chamber, connected to the incinerator body, is used for the purification and emission of flue gas.

[0008] A purification assembly includes a flow guide, a reaction element, an ammonia injection grid, a flow divider, and a flow divider chamber. The flow guide is connected to the purification chamber, the reaction element is sleeved on the flow guide, the ammonia injection grid is connected to the purification chamber, the flow divider is connected to the ammonia injection grid, and the flow divider chamber is connected to the flow divider. The flow divider chamber is disposed in the purification chamber, and the reaction element cooperates with the ammonia injection grid for flue gas purification treatment.

[0009] Preferably, the system further includes a collection component, which includes a flow-blocking element, an activated carbon honeycomb panel, a positioning rod, and a snap-fit ​​element. The flow-blocking element is movably disposed in the purification chamber, the activated carbon honeycomb panel is connected to the flow-blocking element, the positioning rod is connected to the flow-blocking element, and the snap-fit ​​element is connected to the positioning rod and snap-fitted into the purification chamber. The flow-blocking element is located above the flow-guiding element and guides the flue gas to contact the activated carbon honeycomb panel.

[0010] Preferably, the flow-blocking element is movably disposed inside the ammonia injection grid, and the ammonia injection grid is located above the flow-blocking element.

[0011] Preferably, the purification chamber is equipped with an overflow prevention pipe located below the reaction vessel.

[0012] Preferably, multiple positioning rods are evenly spaced around the flow-blocking component, and each positioning rod corresponds to a snap-fit ​​component. The flow-diverting chamber is located on the outer side of the positioning rods.

[0013] Preferably, the reaction element has a plurality of drop holes evenly spaced inside.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) It can effectively reduce the concentration of nitrogen oxides in flue gas, thereby achieving flue gas purification, reducing the total amount of pollutant emissions, ensuring that no pollution is caused to the environment, and guaranteeing a healthy living environment for the surrounding residents.

[0016] (2) It can effectively guide the flue gas to contact the activated carbon honeycomb plate, so that the particulate matter in the flue gas adheres to the inside of the activated carbon, thereby realizing the collection of particulate matter in the flue gas. It can also quickly clean or replace the activated carbon honeycomb plate, effectively improving the maintenance efficiency of the activated carbon honeycomb plate. Attached Figure Description

[0017] Figure 1 shows a schematic diagram of a waste incinerator flue gas purification device;

[0018] Figure 2 shows a schematic diagram of the installation structure of the cleanroom;

[0019] Figure 3 shows a schematic diagram of the installation structure of the ammonia injection grid;

[0020] Figure 4 shows a schematic diagram of the installation structure of the flow guide;

[0021] Figure 5 shows a schematic diagram of the installation structure of activated carbon honeycomb panels;

[0022] In the diagram: 1. Incinerator body; 2. Purification chamber; 3. Flow guide; 4. Reaction chamber; 5. Ammonia injection grid; 6. Flow divider; 7. Flow divider chamber; 8. Flow obstruction; 9. Activated carbon honeycomb panel; 10. Positioning rod; 11. Snap-fit ​​component; 12. Overflow prevention pipe; 13. Drop hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0024] Example 1

[0025] This utility model provides a waste incinerator flue gas purification device, as shown in Figures 1 to 5, comprising: an incinerator body 1, a purification chamber 2, and purification components. The incinerator body 1 consists of two parts: a combustion chamber one and a combustion chamber two, with the combustion chamber two located above the combustion chamber one. The incinerator body 1 is used for waste incineration. The purification chamber 2 is connected to the incinerator body 1 and is used for flue gas purification and emission. The purification components include a flow guide 3, a reaction component 4, an ammonia injection grid 5, a flow divider 6, and a flow divider 7. The flow guide 3 is connected to the purification chamber 2 and can be a frustum-shaped flow guide hood with a flow guiding effect. The diameter of the top end of the flow guide 3 is smaller than the diameter of the bottom end. The reaction component 4 can be an alkali metal such as iron, vanadium, chromium, cobalt, or molybdenum, acting as a catalyst. The reaction element 4 is fitted onto the flow guide 3. The ammonia injection grid 5 is connected to the purification chamber 2. The bottom of the ammonia injection grid 5 is connected to multiple nozzles. The flow divider 6 is connected to the ammonia injection grid 5. The flow divider 6 can be a flow divider pipe. The flow divider chamber 7 is connected to the flow divider 6. The flow divider chamber 7 can be a water storage tank with a flow divider effect. The flow divider chamber 7 is connected to an inlet pipe. The inlet pipe is connected to an external water pump. The inlet of the external water pump is connected to the ammonia solution tank. The outlet of the water pump is connected to the inlet pipe. The flow divider chamber 7 is set in the purification chamber 2. The reaction element 4 and the ammonia injection grid 5 are used for flue gas purification treatment. The purification chamber 2 is equipped with an overflow prevention pipe 12. The overflow prevention pipe 12 is located below the reaction element 4. The reaction element 4 is evenly spaced with multiple drop holes 13 inside.

[0026] By using purification components, the concentration of nitrogen oxides in flue gas can be effectively reduced, thereby achieving flue gas purification, reducing the total amount of pollutant emissions, ensuring that no pollution is caused to the environment, and guaranteeing a healthy living environment for surrounding residents.

[0027] In use, since the diversion chamber 7 is connected to an inlet pipe, which is connected to an external water pump, and the inlet of the external water pump is connected to the ammonia solution tank, and the outlet of the water pump is connected to the inlet pipe, the ammonia solution is drawn into the diversion chamber 7 and enters the ammonia spraying grid 5 along the diversion component 6. It is then sprayed out along the nozzle of the ammonia spraying grid 5. The flue gas that has come into contact with the activated carbon honeycomb plate 9 is squeezed out by the flue gas that enters later, causing the flue gas above to gradually overflow outward along the edge of the flow obstruction component 8 and come into contact with the sprayed ammonia solution and mix with it. Since the reaction component 4 can be an alkali metal such as iron, vanadium, chromium, cobalt or molybdenum, it acts as a catalyst. Through the catalysis of the reaction component 4, the ammonia solution can convert nitrogen oxides in the flue gas into nitrogen and water. Since the ammonia solution is selective, it only reacts with nitrogen oxides and basically does not react with oxygen, hence it is called selective catalytic reduction denitrification. Then, since nitrogen is lighter, the purified flue gas and nitrogen are discharged upward along the gap between the top of the flow obstruction component 8 and the inner surface of the ammonia spraying grid 5, and finally discharged from the top of the purification chamber 2.

[0028] Specifically, the bottom end of the flow guide 3 is fixedly connected to the inside of the purification chamber 2, and the bottom end of the flow guide 3 is connected to the bottom of the purification chamber 2. The reaction element 4 is sleeved inside the outer surface of the flow guide 3. The outer surface of the ammonia spraying grid 5 is fixedly connected to the inside of the purification chamber 2. One end of the flow divider 6 is connected to the top of the ammonia spraying grid 5, and the other end of the flow divider 6 is connected to the bottom of the flow divider 7. The outer surface of the flow divider 7 is fixedly connected to the inside of the purification chamber 2.

[0029] To collect particulate matter in flue gas, as shown in Figures 1 to 5, a collection assembly is also included. This assembly comprises a flow-blocking component 8, an activated carbon honeycomb plate 9, a positioning rod 10, and a locking component 11. The flow-blocking component 8 can be a flow-blocking hood with a flow-blocking effect. The top of the flow-blocking component 8 is hemispherical. The flow-blocking component 8 is movably mounted in the purification chamber 2. The activated carbon honeycomb plate 9 is connected to the flow-blocking component 8. The positioning rod 10 is also connected to the flow-blocking component 8. The locking component 11 consists of a limiting rod and a sphere. The locking component 11 is connected to the positioning rod 10 and is locked into the purification chamber 2. The flow-blocking component 8 is located above the flow-guiding component 3. The inner diameter of the flow-blocking component 8 is larger than the top diameter of the flow-guiding component 3. The flow-blocking component 8 guides the flue gas to contact the activated carbon honeycomb plate 9. The flow-blocking component 8 is movably installed inside the ammonia injection grille 5. The ammonia injection grille 5 is located above the flow-blocking component 8. Since the top of the flow-blocking component 8 is hemispherical, there is a gap between the top of the flow-blocking component 8 and the inner surface of the ammonia injection grille 5. Multiple positioning rods 10 are evenly spaced around the flow-blocking component 8. The positioning rods 10 and the snap-fit ​​components 11 are arranged one-to-one. The diversion chamber 7 is located outside the positioning rods 10.

[0030] By using the collection components, the flue gas can be effectively guided to contact the activated carbon honeycomb plate 9, thereby allowing particulate matter in the flue gas to adhere to the inside of the activated carbon, realizing the collection of particulate matter in the flue gas. It can also quickly clean or replace the activated carbon honeycomb plate 9, effectively improving the maintenance efficiency of the activated carbon honeycomb plate 9.

[0031] In use, the waste to be incinerated is first placed inside the incinerator body 1. The flue gas generated by the incineration enters the purification chamber 2 along the top of the incinerator body 1. The flue gas flows upward along the inner wall of the guide 3. Since the flow obstruction 8 is located above the guide 3 and its inner diameter is larger than the top diameter of the guide 3, the flue gas continues to flow upward after exiting the top of the guide 3, and then enters the flow obstruction 8. Because it is blocked by the flow obstruction 8 and cannot flow to the surrounding areas, it continues to flow upward along the inner wall of the flow obstruction 8. Then, it comes into contact with the activated carbon honeycomb plate 9. Since the activated carbon is honeycomb-shaped, the particles in the flue gas will adhere to the inside of the activated carbon. When the activated carbon honeycomb plate 9 needs to be cleaned or replaced, the positioning rod 10 is moved upward. The positioning rod 10 drives the snap-fit ​​part 11 to move synchronously, so that the snap-fit ​​part 11 is no longer snapped into the inside of the purification chamber 2. The movement of the positioning rod 10 will drive the flow-blocking part 8 and the activated carbon honeycomb plate 9 to move synchronously. When the flow-blocking part 8 passes the top of the purification chamber 2, the flow-blocking part 8 is removed, and the activated carbon honeycomb plate 9 can be cleaned or replaced.

[0032] Specifically, the outer surface of the snap-fit ​​component 11 is snapped onto the top of the purification chamber 2, the top end of the positioning rod 10 is fixedly connected to one end of the snap-fit ​​component 11, the bottom end of the positioning rod 10 is fixedly connected to the outer surface of the flow-blocking component 8, and the outer surface of the activated carbon honeycomb plate 9 is fixedly connected to the inside of the flow-blocking component 8.

[0033] Working Principle: In actual use, the waste to be incinerated is first placed inside the incinerator body 1. The flue gas generated by the incineration enters the purification chamber 2 from the top of the incinerator body 1. The flue gas flows upward along the inner wall of the guide member 3. Since the flow obstruction member 8 is located above the guide member 3 and its inner diameter is larger than the top diameter of the guide member 3, the flue gas continues to flow upward after exiting from the top of the guide member 3. It then enters the flow obstruction member 8 and, being blocked by it, cannot flow outwards. It continues to flow upward along the inner wall of the flow obstruction member 8 and then comes into contact with the activated carbon honeycomb plate 9. Because the activated carbon is honeycomb-shaped, the particles in the flue gas adhere to the inside of the activated carbon. When the activated carbon honeycomb panel 9 needs to be cleaned or replaced, the positioning rod 10 is moved upward. The positioning rod 10 drives the snap-fit ​​part 11 to move synchronously, so that the snap-fit ​​part 11 is no longer snapped into the purification chamber 2. The movement of the positioning rod 10 will drive the flow-blocking part 8 and the activated carbon honeycomb panel 9 to move synchronously. When the flow-blocking part 8 passes the top of the purification chamber 2, the flow-blocking part 8 is removed, and the activated carbon honeycomb panel 9 can be cleaned or replaced. This can effectively guide the flue gas to contact the activated carbon honeycomb panel 9, so that the particulate matter in the flue gas adheres to the inside of the activated carbon, realizing the collection of particulate matter in the flue gas. It can also quickly realize the cleaning or replacement of the activated carbon honeycomb panel 9, effectively improving the maintenance efficiency of the activated carbon honeycomb panel 9.

[0034] Then, because the diversion chamber 7 is connected to an inlet pipe, which is connected to an external water pump, and the inlet of the external water pump is connected to an ammonia solution tank, while the outlet of the water pump is connected to the inlet pipe, the ammonia solution is drawn into the diversion chamber 7 and enters the ammonia injection grid 5 along the diversion component 6. It is then sprayed out along the nozzles of the ammonia injection grid 5. The flue gas that has come into contact with the activated carbon honeycomb plate 9 is then squeezed out by the following flue gas, causing the upper flue gas to gradually overflow outwards along the edge of the flow obstruction component 8 and come into contact with the sprayed ammonia solution, mixing with it. Furthermore, because the reaction component 4 can be an alkali metal such as iron, vanadium, chromium, cobalt, or molybdenum, it acts as a catalyst. Through the catalysis of the reaction component 4, the ammonia solution... The solution can convert nitrogen oxides in flue gas into nitrogen and water. Because the ammonia solution is selective, it only reacts with nitrogen oxides and hardly reacts with oxygen, hence the name selective catalytic reduction denitrification. The waste liquid after the reaction falls through the drop hole 13 and enters the bottom of the purification chamber 2. Then, because nitrogen is lighter, the purified flue gas and nitrogen are discharged upward through the gap between the top of the flow obstruction 8 and the inner surface of the ammonia injection grid 5, and finally discharged from the top of the purification chamber 2. This effectively reduces the concentration of nitrogen oxides in the flue gas, thereby achieving flue gas purification, reducing the total amount of pollutant emissions, ensuring that there is no pollution to the environment, and guaranteeing a healthy living environment for the surrounding residents.

[0035] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A waste incinerator flue gas purification device, characterized in that, include: The incinerator body (1) is used for the incineration of waste; Purification chamber (2), connected to the incinerator body (1), is used for the purification and emission of flue gas; The purification component includes a flow guide (3), a reaction component (4), an ammonia injection grid (5), a flow divider (6), and a flow divider chamber (7). The flow guide (3) is connected to the purification chamber (2), the reaction component (4) is sleeved on the flow guide (3), the ammonia injection grid (5) is connected to the purification chamber (2), the flow divider (6) is connected to the ammonia injection grid (5), the flow divider chamber (7) is connected to the flow divider (6), and the flow divider chamber (7) is disposed in the purification chamber (2). The reaction component (4) and the ammonia injection grid (5) are used for flue gas purification treatment.

2. The waste incinerator flue gas purification device according to claim 1, characterized in that: It also includes a collection component, which includes a flow-blocking component (8), an activated carbon honeycomb plate (9), a positioning rod (10), and a snap-fit ​​component (11). The flow-blocking component (8) is movably disposed in the purification chamber (2). The activated carbon honeycomb plate (9) is connected to the flow-blocking component (8). The positioning rod (10) is connected to the flow-blocking component (8). The snap-fit ​​component (11) is connected to the positioning rod (10) and snap-fitted into the purification chamber (2). The flow-blocking component (8) is located above the flow guide component (3) and guides the flue gas to contact the activated carbon honeycomb plate (9).

3. The waste incinerator flue gas purification device according to claim 2, characterized in that: The flow-blocking element (8) is movably disposed inside the ammonia injection grid (5), and the ammonia injection grid (5) is located above the flow-blocking element (8).

4. The waste incinerator flue gas purification device according to claim 1, characterized in that: The purification chamber (2) is equipped with an overflow prevention pipe (12), which is located below the reaction vessel (4).

5. The waste incinerator flue gas purification device according to claim 2, characterized in that: The positioning rod (10) is evenly spaced around the flow blocking member (8), and the positioning rod (10) and the snap-fit ​​member (11) are arranged in a one-to-one correspondence. The diversion chamber (7) is located outside the positioning rod (10).

6. The waste incinerator flue gas purification device according to claim 1, characterized in that: The reaction element (4) has multiple drop holes (13) evenly spaced inside.

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