A waste incinerator

Abstract

This utility model discloses a waste incineration method, relating to the field of incinerator technology. It includes a waste incinerator body with a furnace chamber. A feed hopper is installed on the top of the waste incinerator body, connecting to the furnace chamber. The waste incinerator body is connected to a blower pipe, one end of which connects to the furnace chamber, and the other end connects to a ducted axial flow fan. The ducted axial flow fan is used to exhaust flue gas from the furnace chamber. The flue gas generated during combustion is directly discharged from the furnace chamber through the ducted axial flow fan, significantly shortening the residence time of the flue gas in the furnace chamber, effectively reducing the secondary reaction of harmful gases to generate pollutants, significantly improving combustion efficiency, and simultaneously reducing the difficulty and cost of subsequent exhaust gas treatment.

Description

Technical Field

[0001] This utility model relates to the field of incinerator technology, specifically a waste incinerator. Background Technology

[0002] With the acceleration of urbanization and population growth, the amount of urban domestic waste has increased dramatically, making waste disposal an increasingly serious problem. Waste incineration, as an important treatment method that can achieve waste reduction, harmlessness, and resource recovery, has been widely used both domestically and internationally. As the core equipment in waste incineration, the performance of the waste incinerator directly affects the effectiveness of waste treatment and environmental indicators.

[0003] Existing waste incinerators suffer from numerous operational problems. On one hand, the flue gas exhaust system is poorly designed, preventing the rapid and even discharge of flue gas from the furnace. This results in harmful gases produced during combustion remaining inside the furnace for an excessively long time, reducing combustion efficiency and potentially generating more pollutants through secondary reactions, increasing the difficulty and cost of subsequent exhaust gas treatment. On the other hand, the large amount of heat generated during waste incineration is not fully utilized, leading to energy waste. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a waste incinerator to solve the shortcomings of the existing technology.

[0005] The purpose of this utility model is achieved through the following technical solution: a waste incinerator, including a waste incinerator body, a furnace chamber provided inside the waste incinerator body, a feed hopper installed on the top of the waste incinerator body, the feed hopper communicating with the furnace chamber, a blower pipe connected to the waste incinerator body, one end of the blower pipe communicating with the furnace chamber, and the other end connected to a duct axial flow fan, the duct axial flow fan being used to exhaust flue gas from the furnace chamber.

[0006] Furthermore, an annular guide cavity is formed between the inner and outer walls of the waste incinerator body, and the blower pipe is connected to the annular guide cavity. An upper exhaust plate is fixed to the inner wall of the waste incinerator body, and an exhaust channel is formed in the upper exhaust plate. Both ends of the exhaust channel are connected to the annular guide cavity. Several exhaust holes are opened on the upper exhaust plate, and the exhaust holes are connected to the exhaust channel.

[0007] Furthermore, an air supply duct is installed on the outer wall of the waste incinerator body. One end of the air supply duct away from the waste incinerator body is connected to a medium-pressure blower, and the other end is connected to an upper air inlet pipe, which is connected to an annular guide cavity.

[0008] Furthermore, a lower air inlet plate is fixed to the inner wall of the waste incinerator body, and a lower exhaust channel is formed inside the lower air inlet plate. Both ends of the lower exhaust channel are connected to an annular guide cavity. Several lower exhaust holes are opened on the lower air inlet plate, and the lower exhaust holes are connected to the lower exhaust channel. A lower air inlet pipe is connected to the side wall of the air supply pipe, and the lower air inlet pipe is connected to the annular guide cavity.

[0009] Furthermore, the upper exhaust plate is located above the lower air inlet plate, and there are two of each of the upper exhaust plate and the lower air inlet plate.

[0010] Furthermore, the cross-sectional shape of the upper exhaust plate and the lower air inlet plate are both U-shaped.

[0011] Furthermore, a furnace bridge is installed inside the waste incinerator, and the lower air inlet plate is arranged close to the furnace bridge.

[0012] Furthermore, the side wall of the waste incinerator body is provided with a slag discharge window, which is connected to the furnace chamber, and a furnace door is installed on the slag discharge window.

[0013] The beneficial effects of this utility model are:

[0014] 1. The waste incinerator body is equipped with an annular guide chamber and an upper exhaust plate, which, together with a ducted axial flow fan, constitute a highly efficient flue gas exhaust system. Flue gas in the furnace can quickly and evenly enter the annular guide chamber and be discharged through the exhaust holes and channels of the upper exhaust plate. This design significantly shortens the residence time of flue gas in the furnace, effectively reduces the secondary reaction of harmful gases to generate pollutants, significantly improves combustion efficiency, and reduces the difficulty and cost of subsequent tail gas treatment.

[0015] 2. An annular flow chamber is formed between the inner and outer walls of the waste incinerator. Air is supplied into the chamber through air ducts, upper air inlet pipes, and lower air inlet pipes. The air can fully absorb the heat generated by incineration, achieving effective heat recovery. The preheated air can be reused in the incineration process or applied to other processes requiring heat energy, reducing energy waste and improving energy utilization efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a waste incinerator according to the present invention. Figure 1 ;

[0017] Figure 2 This is a top view of a waste incinerator according to the present invention;

[0018] Figure 3 for Figure 3 Sectional view along the BB direction;

[0019] Figure 4 This is a schematic diagram of the structure of a waste incinerator according to the present invention. Figure 2 ;

[0020] In the diagram, 1-Waste incinerator body, 2-Furnace chamber, 3-Feed hopper, 4-Blower pipe, 5-Pipeline axial flow fan, 6-Annular guide cavity, 7-Upper exhaust plate, 8-Exhaust duct, 9-Exhaust hole, 10-Air supply duct, 11-Medium pressure fan, 12-Upper air inlet pipe, 13-Lower air inlet plate, 14-Lower exhaust duct, 15-Lower exhaust hole, 16-Furnace bridge, 17-Slag discharge window, 18-Furnace door, 19-Lower air inlet pipe. Detailed Implementation

[0021] Example 1

[0022] like Figures 1 to 4 As shown, a waste incinerator includes a waste incinerator body 1, a furnace chamber 2 inside the waste incinerator body 1, a feed hopper 3 installed on the top of the waste incinerator body 1, the feed hopper 3 connected to the furnace chamber 2, a blower pipe 4 connected to the waste incinerator body 1, one end of the blower pipe 4 connected to the furnace chamber 2, and the other end connected to a duct-type axial flow fan 5. The duct-type axial flow fan 5 is used to exhaust the flue gas in the furnace chamber 2. Waste is fed into the furnace chamber 2 of the waste incinerator body 1 through the feed hopper 3, and the waste is burned in the furnace chamber 2. The flue gas generated by the combustion is directly discharged from the furnace chamber 2 through the duct-type axial flow fan 5, which greatly shortens the residence time of the flue gas in the furnace chamber 2, effectively reduces the secondary reaction of harmful gases to generate pollutants, and significantly improves the combustion efficiency. The use of the duct-type axial flow fan 5 for flue gas exhaust enables directional and fixed-point emission of flue gas through the pipeline, reducing the difficulty and cost of subsequent tail gas treatment.

[0023] Furthermore, the side wall of the waste incinerator body 1 is provided with a slag discharge window 17, which is connected to the furnace chamber 2. A furnace door body 18 is installed on the slag discharge window 17. By opening the furnace door body 18, the slag produced by combustion can be cleaned through the slag discharge window 17 to ensure combustion efficiency.

[0024] Example 2

[0025] Based on Example 1, such as Figures 1 to 3 As shown, an annular guide cavity 6 is formed between the inner and outer walls of the waste incinerator body 1. The blower pipe 4 is connected to the annular guide cavity 6. An upper exhaust plate 7 is fixed on the inner wall of the waste incinerator body 1. An exhaust channel 8 is formed in the upper exhaust plate 7. Both ends of the exhaust channel 8 are connected to the annular guide cavity 6. Several exhaust holes 9 are opened on the upper exhaust plate 7. The exhaust holes 9 are connected to the exhaust channel 8. The upper exhaust plate 7 is installed at the upper part of the waste incinerator body 1. The flue gas generated by combustion will flow upward. The flue gas enters the exhaust channel 8 through the exhaust holes 9 of the upper exhaust plate 7, and then enters the annular guide cavity 6 through the exhaust channel 8. Finally, it is discharged through the pipeline axial flow fan 5, so as to achieve rapid discharge of flue gas without affecting the combustion of waste.

[0026] Example 3

[0027] Based on Example 2, such as Figures 1 to 4 As shown, an air supply duct 10 is installed on the outer wall of the waste incinerator body 1. One end of the air supply duct 10 away from the waste incinerator body 1 is connected to a medium-pressure blower 11, and the other end is connected to an upper air inlet pipe 12. The upper air inlet pipe 12 is connected to an annular guide cavity 6. A lower air inlet plate 13 is fixed on the inner wall of the waste incinerator body 1. A lower exhaust channel 14 is formed inside the lower air inlet plate 13. Both ends of the lower exhaust channel 14 are connected to the annular guide cavity 6. Several lower exhaust holes 15 are opened on the lower air inlet plate 13. The lower exhaust holes 15 are connected to the lower exhaust channel 14. A lower air inlet pipe 19 is connected to the side wall of the air supply duct 10. 9 connects to the annular guide cavity 6, and air is introduced into the furnace 2 through the medium-pressure blower 11. The air enters the lower exhaust channel 14 through the air supply pipe 10, the lower air inlet pipe 19, and the annular guide cavity 6, and finally enters the furnace 2 through the lower exhaust hole 15 to accelerate the combustion of waste. Air enters the exhaust channel 8 through the air supply pipe 10, the upper air inlet pipe 12, and the annular guide cavity 6, and finally enters the furnace 2 through the exhaust hole 9 to assist the combustion of the embers in the flue gas, making the waste combustion more complete. It should be noted that in order to avoid mutual interference between air supply and flue gas emission, air supply and flue gas emission are carried out alternately.

[0028] Furthermore, the upper exhaust plate 7 is located above the lower air inlet plate 13. There are two upper exhaust plates 7 and two lower air inlet plates 13, which increases the air supply area and exhaust area, improves combustion efficiency and combustion effect, and can effectively and timely discharge the flue gas directly from the furnace 2.

[0029] Furthermore, the cross-sectional shape of the upper exhaust plate 7 and the cross-sectional shape of the lower air inlet plate 13 are both U-shaped. A furnace bridge 16 is installed inside the waste incinerator body 1. The lower air inlet plate 7 is arranged close to the furnace bridge 16. Waste falls on the furnace bridge 16 for combustion. The lower air inlet plate 7 being close to the furnace bridge 16 facilitates air supply for auxiliary combustion.

Claims

1. A waste incinerator, comprising a waste incinerator body (1), characterized in that, The waste incinerator body (1) is provided with a furnace chamber (2). A feed hopper (3) is installed on the top of the waste incinerator body (1). The feed hopper (3) is connected to the furnace chamber (2). The waste incinerator body (1) is connected to a blower pipe (4). One end of the blower pipe (4) is connected to the furnace chamber (2), and the other end is connected to a duct axial flow fan (5). The duct axial flow fan (5) is used to discharge the flue gas in the furnace chamber (2).

2. A waste incinerator according to claim 1, characterized in that, An annular guide cavity (6) is formed between the inner and outer walls of the waste incinerator body (1). The blower pipe (4) is connected to the annular guide cavity (6). An upper exhaust plate (7) is fixed on the inner wall of the waste incinerator body (1). An exhaust channel (8) is formed in the upper exhaust plate (7). Both ends of the exhaust channel (8) are connected to the annular guide cavity (6). Several exhaust holes (9) are opened on the upper exhaust plate (7). The exhaust holes (9) are connected to the exhaust channel (8).

3. A waste incinerator according to claim 2, characterized in that, The outer wall of the waste incinerator body (1) is equipped with an air supply pipe (10). One end of the air supply pipe (10) away from the waste incinerator body (1) is connected to a medium-pressure blower (11), and the other end is connected to an upper air inlet pipe (12). The upper air inlet pipe (12) is connected to an annular guide cavity (6).

4. A waste incinerator according to claim 3, characterized in that, The inner wall of the waste incinerator body (1) is fixed with a lower air inlet plate (13), and a lower smoke exhaust channel (14) is formed in the lower air inlet plate (13). Both ends of the lower smoke exhaust channel (14) are connected to an annular guide cavity (6). A plurality of lower smoke exhaust holes (15) are opened on the lower air inlet plate (13), and the lower smoke exhaust holes (15) are connected to the lower smoke exhaust channel (14). The side wall of the air supply pipe (10) is connected with a lower air inlet pipe (19), and the lower air inlet pipe (19) is connected to the annular guide cavity (6).

5. A waste incinerator according to claim 4, characterized in that, The upper exhaust plate (7) is located above the lower air inlet plate (13), and there are two of each of the upper exhaust plate (7) and the lower air inlet plate (13).

6. A waste incinerator according to claim 4, characterized in that, The cross-sectional shape of the upper exhaust plate (7) and the lower air inlet plate (13) are both U-shaped.

7. A waste incinerator according to claim 4, characterized in that, The waste incinerator body (1) is equipped with a furnace bridge (16), and the lower air inlet plate (7) is arranged close to the furnace bridge (16).

8. A waste incinerator according to claim 1, characterized in that, The side wall of the waste incinerator body (1) is provided with a slag discharge window (17), which is connected to the furnace chamber (2), and a furnace door body (18) is installed on the slag discharge window (17).

Images