A process for incinerating domestic waste by means of a burning stick

Abstract

The present application relates to waste incineration technical field, specifically to a kind of domestic waste combustion stick's incineration process, including the following steps, step S1, by conveying belt the combustion stick is sent into to drying part;Step S2, drying part is by introducing the flue gas of combustion department combustion and is carried out to the combustion stick drying;Step S3, the combustion stick after drying is by chute into the combustion grate in combustion department, and the movable component for adjusting the position of combustion stick distribution on combustion grate is set on the slide;Step S4, during the combustion process, the air supply is carried out to the combustion department below combustion grate, and the percussion structure below combustion grate is regularly hammering to combustion grate;Step S5, the ash after combustion is discharged through the ash outlet at the bottom of combustion department.The drying part can carry out drying dehydration and preheating to the domestic waste combustion stick by introducing the high-temperature flue gas generated during the combustion process, and reduce the water vapor generated during the combustion process, so as to improve the combustion stability.

Description

Technical Field

[0001] This invention relates to the field of waste incineration technology, specifically to an incineration process for municipal solid waste combustion rods. Background Technology

[0002] With the rapid development of my country's social economy, the acceleration of urbanization, and the rapid improvement of people's living standards, the amount of waste generated in urban production and daily life has also increased rapidly. The land occupation, environmental pollution, and impact on people's health caused by domestic waste have become increasingly apparent. The massive increase in urban domestic waste and the resulting environmental pollution problems have gradually attracted widespread attention from all sectors of society. The country attaches great importance to environmental protection and has made significant progress in the prevention and control of domestic waste and sewage. With the development of domestic waste recycling and treatment capabilities and levels, especially in the field of power generation, incinerating domestic waste for power generation has become one of the mainstream methods of domestic waste treatment.

[0003] To ensure the stability of municipal solid waste during incineration, specialized equipment is used to prepare the waste into combustion rods. By pre-treating the waste and controlling its moisture content, the stability of the waste during combustion is also controlled.

[0004] However, currently, there are no targeted improvements to the incineration process of combustion rods, which still leads to some instability during the incineration process and some waste of heat energy. Based on this, this application proposes an incineration process for municipal solid waste combustion rods that can improve the combustion stability of municipal solid waste combustion rods. Summary of the Invention

[0005] The purpose of this invention is to provide an incineration process for municipal solid waste combustion rods, which solves the problem that in the existing technology, the combustion process of combustion rods has not been specifically improved, resulting in some unstable situations during the incineration process and some waste of heat energy.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A process for incinerating municipal solid waste incinerator rods includes the following steps: Step S1, the incinerator rods are fed into a drying section via a conveyor belt; Step S2, the drying section dries the incinerator rods by introducing flue gas generated during combustion in the combustion section; Step S3, the dried incinerator rods enter the combustion grate in the combustion section through a slide rail, the slide rail being equipped with movable parts for adjusting the position of the incinerator rods on the combustion grate; Step S4, during combustion, air is supplied to the combustion section from below the combustion grate, and a striking structure below the combustion grate periodically hammers the combustion grate; Step S5, the ash after combustion is completed is discharged through an ash discharge port at the bottom of the combustion section.

[0007] A further technical solution is that a drying chamber is provided inside the drying section. One end of the drying section is provided with a feed inlet connected to the drying chamber, and the other end is connected to the drying chamber and the combustion section through a slide. A conveyor belt is placed horizontally inside the drying chamber, with one end of the conveyor belt placed above the slide and the other end passing through the feed inlet and placed outside the drying section. Several air inlet pipes connected to the drying chamber are provided at the bottom of the drying section. All of the air inlet pipes are connected to the exhaust pipe of the combustion section through a connecting pipe. An exhaust pipe connected to the drying chamber is provided at the top of the drying section.

[0008] A further technical solution is that the drying section has a guide strip above the feed inlet, and a first sliding hole is provided through the guide strip from top to bottom. A first gate plate for closing the feed inlet is slidably installed in the first sliding hole. When the lower end of the first gate plate moves downward, it fits against the upper side of the conveyor belt. A first electric telescopic rod for driving the first gate plate to move up and down is provided on the upper side of the drying section. A second sliding hole connected to the inside of the slide is provided on the upper side of the slide. A second gate plate for blocking the slide is slidably installed in the second sliding hole. A second electric telescopic rod for driving the second gate plate to move up and down is provided on the upper side of the slide.

[0009] A further technical solution is to use a mesh conveyor belt with multiple support rollers inside.

[0010] A further technical solution is to install a first fan inside the air inlet pipe and multiple discharge pipes, with a second fan installed in the discharge pipe closest to the feed inlet.

[0011] A further technical solution is that a combustion chamber is provided inside the combustion section, a combustion grate is horizontally installed in the combustion chamber below the slide, several support rods are vertically arranged on the upper side of the combustion grate, a heat exchanger is provided above the combustion grate in the combustion chamber, and the exhaust pipe is connected to the top of the combustion chamber.

[0012] A further technical solution is that the moving parts include an extension plate, the outer wall of the combustion section has a third sliding hole on the lower side of the slide that communicates with the combustion chamber, the extension plate is slidably disposed in the third sliding hole, the extension plate is parallel to the bottom of the slide, a fourth sliding hole is disposed at the end of the extension plate facing the outside of the combustion section, a guide rod is slidably disposed in the fourth sliding hole, a fixing block is disposed on the lower side of the slide, one end of the guide rod is connected to the fixing block, a drive groove is recessed on the lower side of the extension plate, a rack is disposed in the drive groove, a drive motor is installed in the combustion section below the slide, a drive gear is disposed on the output shaft of the drive motor, and the drive gear meshes with the rack.

[0013] A further technical solution is that the lower side of the combustion grate is connected to a first impact ball via an elastic rod, and the combustion chamber is provided with a fifth sliding hole connecting the inside and outside below the combustion grate. An operating rod is slidably installed in the fifth sliding hole. One end of the operating rod is placed in the combustion chamber and the other end is connected to a second impact ball. The other end of the operating rod is placed outside the combustion section and connected to an operating handle. A protective sleeve is provided around the fifth sliding hole on the outer wall of the combustion section.

[0014] A further technical solution is that the combustion chamber wall is provided with several air supply pipes below the combustion grate for supplying air to the combustion chamber.

[0015] Compared with existing technologies, the advantages of this invention are as follows: This invention, through the cooperation of a conveyor belt and a chute, can automatically supply municipal solid waste incinerator rods into the combustion chamber. Furthermore, by introducing high-temperature flue gas generated during combustion into the drying chamber, the incinerator rods can be dried, dehydrated, and preheated. This allows the incinerator rods to enter combustion more quickly upon entering the combustion chamber, reduces water vapor production during combustion, thereby improving combustion stability and preventing water vapor from absorbing the heat generated during combustion, thus improving the utilization rate of calorific value. By incorporating movable components, municipal solid waste can be evenly distributed on the combustion grate, preventing localized accumulation that could affect combustion efficiency and improving overall combustion effectiveness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the drying section and combustion section of an incineration process for municipal solid waste combustion rods according to the present invention.

[0017] Figure 2 for Figure 1 A magnified view of the area marked A in the middle.

[0018] Icons: 1-Drying section, 2-Drying chamber, 3-Feed inlet, 4-Slide rail, 5-Combustion section, 6-Air inlet pipe, 7-Connecting pipe, 8-Exhaust pipe, 9-Discharge pipe, 10-Guide strip, 11-First sliding hole, 12-First gate, 13-First electric telescopic rod, 14-Second sliding hole, 15-Second gate, 16-Second electric telescopic rod, 17-Support roller, 18-Combustion chamber, 19-Support rod, 20-Heat exchanger 21-Extension plate, 22-Third sliding hole, 23-Fourth sliding hole, 24-Guide rod, 25-Fixing block, 26-Rack, 27-Drive motor, 28-Drive gear, 29-Elastic rod, 30-First impact ball, 31-Fifth sliding hole, 32-Operating lever, 33-Second impact ball, 34-Operating handle, 35-Protective sleeve, 36-Air supply pipe, 37-Conveyor belt, 38-Ash discharge port, 39-Combustion grate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] Figures 1 to 2 The figure shown is an embodiment of the present invention.

[0021] Example: A process for incinerating municipal solid waste incinerator rods includes the following steps: Step S1, the incinerator rods are fed into the drying section 1 via a conveyor belt 37; Step S2, the drying section 1 dries the incinerator rods by introducing flue gas generated from combustion in the combustion section 5; Step S3, the dried incinerator rods enter the combustion grate 39 in the combustion section 5 via a slide 4, and the slide 4 is provided with movable parts for adjusting the position of the incinerator rods on the combustion grate 39; Step S4, during combustion, gas is supplied to the combustion section 5 from below the combustion grate 39, and a striking structure below the combustion grate 39 periodically hammers the combustion grate 39; Step S5, the ash after combustion is completed is discharged through the ash discharge port 38 at the bottom of the combustion section 5. This invention, through the cooperation of conveyor belt 37 and slide 4, can automatically supply municipal solid waste incinerator rods into the combustion section 5. Furthermore, the drying section 1, by introducing high-temperature flue gas generated during combustion, can dry, dehydrate, and preheat the incinerator rods. This allows the incinerator rods to enter combustion more quickly upon entering the combustion section 5, reduces water vapor production during combustion, thereby improving combustion stability and preventing water vapor from absorbing the heat generated during combustion, thus increasing the utilization rate of calorific value. By incorporating movable components, the municipal solid waste can be evenly distributed on the combustion grate 39, preventing localized accumulation that could affect combustion efficiency and improving overall combustion effectiveness.

[0022] The drying section 1 contains a drying chamber 2. One end of the drying section 1 has a feed inlet 3 connected to the drying chamber 2, and the other end connects the drying chamber 2 and the combustion section 5 via a slide 4. A conveyor belt 37 is horizontally positioned inside the drying chamber 2, with one end above the slide 4 and the other end passing through the feed inlet 3 and extending outside the drying section 1. Several air inlet pipes 6 connected to the drying chamber 2 are located at the bottom of the drying section 1. These air inlet pipes 6 are all connected to the exhaust pipe 8 of the combustion section 5 via connecting pipes 7. An exhaust pipe 9 connected to the drying chamber 2 is located at the top of the drying section 1. With this configuration, during the drying process, the flue gas generated by the combustion in the combustion section 5 is introduced into the drying chamber 2 through the connecting pipes 7 and the air inlet pipes 6. The gas then passes through the conveyor belt 37 from below the drying chamber 2 and exits through the exhaust pipe 9. Throughout the process, the flue gas contacts the municipal solid waste incinerator rods, raising their temperature and thus drying them. Furthermore, the flue gas also raises the temperature of the entire drying chamber 2, further enhancing the drying effect. The conveyor belt 37 allows the municipal solid waste incinerator rods to remain in the drying chamber 2 for a period of time before being moved into the combustion section 5 after drying. This ensures that the municipal solid waste incinerator rods are fully dried and heated.

[0023] A guide strip 10 is provided above the feed inlet 3 in the drying section 1. A first sliding hole 11 is provided vertically through the guide strip 10. A first gate 12 for closing the feed inlet 3 is slidably disposed within the first sliding hole 11. When the lower end of the first gate 12 moves downward, it fits against the upper side of the conveyor belt 37. A first electric telescopic rod 13 for driving the first gate 12 to move up and down is provided on the upper side of the drying section 1. A second sliding hole 14 connected to the interior of the slide 4 is provided on the upper side of the slide 4. A second gate 15 for blocking the slide 4 is slidably disposed within the second sliding hole 14. A second electric telescopic rod 16 for driving the second gate 15 to move up and down is provided on the upper side of the slide 4. By setting the first gate 12 and the second gate 15, when drying the municipal solid waste incinerator rods in the drying chamber 2, closing the first gate 12 and the second gate 15 makes the drying chamber 2 a relatively closed space, thus preventing the flue gas in the drying chamber 2 from overflowing and polluting the surrounding air. By setting the first electric telescopic rod 13 and the second electric telescopic rod 16, it is easy to control the state of the first gate 12 and the second gate 15.

[0024] The conveyor belt 37 is a mesh conveyor belt, and multiple support rollers 17 are installed inside the conveyor belt 37. The mesh conveyor belt facilitates the passage of flue gas, thereby drying the municipal solid waste incinerator rods. At the feed inlet 3, a sealing block is provided on the lower side of the feed inlet 3 to fit against the lower side of the mesh conveyor belt. Support rollers 17 are provided at the corresponding positions of the sealing blocks, and the first gate 12 is provided corresponding to the support rollers 17 and the sealing blocks at the corresponding positions. This can cooperate to seal the feed inlet 3, thereby preventing flue gas from overflowing.

[0025] A first fan is installed inside the air inlet pipe 6, and multiple exhaust pipes 9 are installed, with a second fan installed in the exhaust pipe 9 closest to the feed inlet 3. The first fan draws the flue gas from the exhaust pipe 8 into the drying chamber 2, and the combined effect of the multiple air inlets 6 and the first fan ensures that the flue gas enters the drying chamber 2 evenly. The second fan in the exhaust pipe 9 near the feed inlet 3 draws out the flue gas and air at that location, preventing flue gas from overflowing when the first damper 12 is opened. When the first damper 12 is opened, the power of the second fan is increased to enhance the suction effect; when the first damper 12 is closed, the second fan can be turned off or its power reduced.

[0026] The combustion section 5 contains a combustion chamber 18. A combustion grate 39 is horizontally positioned within the combustion chamber 18 below the slide rail 4. Several support rods 19 are vertically arranged on the upper side of the combustion grate 39. A heat exchanger 20 is installed above the combustion grate 39 in the combustion chamber 18. The exhaust pipe 8 is connected to the top of the combustion chamber 18. The heat exchanger 20 absorbs heat from the combustion chamber 18 to heat the water within it, thereby generating electricity by driving a generator or directly utilizing the heated water or steam. The support rods 19 secure the complete municipal solid waste incinerator rods. When the incinerator rods burn into small pieces, they fall through the gaps between the support rods 19 onto the upper side of the combustion grate 39 to continue burning and ignite the complete incinerator rods at the top of the support rods 19. After burning to ash, the small pieces of incinerator rod fall through the mesh of the combustion grate 39 to the bottom of the combustion chamber 18.

[0027] The movable component includes an extension plate 21. The outer wall of the combustion section 5 has a third sliding hole 22 on the lower side of the slide rail 4, which communicates with the combustion chamber 18. The extension plate 21 is slidably disposed in the third sliding hole 22. The extension plate 21 is parallel to the bottom of the slide rail 4. A fourth sliding hole 23 is provided at the end of the extension plate 21 facing the outside of the combustion section 5. A guide rod 24 is slidably disposed in the fourth sliding hole 23. A fixing block 25 is provided on the lower side of the slide rail 4. One end of the guide rod 24 is connected to the fixing block 25. A drive groove is recessed on the lower side of the extension plate 21. A rack 26 is disposed in the drive groove. A drive motor 27 is installed below the slide rail 4 in the combustion section 5. A drive gear 28 is disposed on the output shaft of the drive motor 27. The drive gear 28 meshes with the rack 26. To ensure even distribution of the municipal solid waste incinerator rods on the upper side of the combustion grate 39, when the incinerator rods are transported to the upper side of the combustion grate 39 via the conveyor belt 37, the drive motor 27 first moves the extension plate 21 towards the combustion chamber 18, positioning one end of the extension plate 21 above the side of the combustion grate 39 away from the slide 4. Then, by activating the conveyor belt 37, the municipal solid waste incinerator rods roll off the conveyor belt 37 onto the slide 4, and then fall onto the combustion grate 39 via the slide 4 and the extension plate 21. During this process, the drive motor 27 moves the extension plate 21 towards the outside of the combustion section 5, thus ensuring that the municipal solid waste incinerator rods are evenly distributed from the side of the combustion grate 39 away from the slide 4 towards the side closer to the slide 4, preventing accumulation and incomplete combustion.

[0028] A first impact ball 30 is connected to the lower side of the combustion grate 39 via an elastic rod 29. A fifth sliding hole 31, connecting the inside and outside, is provided in the combustion chamber 18 below the combustion grate 39. An operating rod 32 is slidably mounted within the fifth sliding hole 31. One end of the operating rod 32, placed inside the combustion chamber 18, is connected to a second impact ball 33. The other end of the operating rod 32, placed outside the combustion section 5, is connected to an operating handle 34. A protective sleeve 35 is provided around the fifth sliding hole 31 on the outer wall of the combustion section 5. After the municipal solid waste incinerator has burned completely, the ash, if not pulverized, will become stuck in the holes of the combustion grate 39. If not handled, this will affect the gas supply below. Therefore, the operating rod 32 drives the second impact ball 33 to strike the first impact ball 30. This, combined with the elastic rod 29, causes the combustion grate 39 to vibrate, breaking the lumpy ash on the combustion grate 39 into smaller pieces or powder, which then fall through the holes of the combustion grate 39. By providing a protective sleeve 35, burns to operators caused by the exposed operating lever 32 can be prevented. The operating handle 34 facilitates operation, and operators should wear heat-resistant gloves during operation.

[0029] The combustion chamber 18 has several air supply pipes 36 located below the combustion grate 39 on its cavity wall for supplying air to the combustion chamber 18. By providing the air supply pipes 36, gas can be continuously supplied to the combustion chamber 18.

[0030] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. An incineration process for municipal solid waste combustion rods, characterized in that, The process includes the following steps: Step S1, the combustion rod is fed into the drying section (1) by the conveyor belt (37); Step S2, the drying section (1) dries the combustion rod by introducing the flue gas generated by the combustion of the combustion section (5); Step S3, the dried combustion rod enters the combustion grate (39) in the combustion section (5) through the slide (4), and the slide (4) is provided with a movable part for adjusting the position of the combustion rod on the combustion grate (39); Step S4, during the combustion process, the combustion grate (39) supplies gas to the combustion section (5) from below, and the striking structure below the combustion grate (39) hammers the combustion grate (39) at regular intervals; Step S5, the ash after combustion is discharged through the ash discharge port (38) at the bottom of the combustion section (5).

2. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The drying section (1) is provided with a drying chamber (2). One end of the drying section (1) is provided with a feed inlet (3) connected to the drying chamber (2), and the other end is connected to the drying chamber (2) and the combustion section (5) through a slide (4). The conveyor belt (37) is placed horizontally in the drying chamber (2). One end of the conveyor belt (37) is placed above the slide (4), and the other end passes through the feed inlet (3) and is placed outside the drying section (1). The bottom of the drying section (1) is provided with a number of air inlet pipes (6) connected to the drying chamber (2). The number of air inlet pipes (6) are all connected to the exhaust pipe (8) of the combustion section (5) through a connecting pipe (7). The top of the drying section (1) is provided with an exhaust pipe (9) connected to the drying chamber (2).

3. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The drying section (1) is provided with a guide strip (10) above the feed inlet (3). The guide strip (10) is provided with a first sliding hole (11) running vertically through it. A first gate (12) for closing the feed inlet (3) is provided in the first sliding hole (11) sliding vertically. When the lower end of the first gate (12) moves downward, it fits against the upper side of the conveyor belt (37). A first electric telescopic rod (13) for driving the first gate (12) to move vertically is provided on the upper side of the drying section (1). A second sliding hole (14) communicating with the interior of the slide (4) is provided on the upper side of the slide (4). A second gate (15) for blocking the slide (4) is provided in the second sliding hole (14) sliding vertically. A second electric telescopic rod (16) for driving the second gate (15) to move vertically is provided on the upper side of the slide (4).

4. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The conveyor belt (37) is a mesh conveyor belt, and multiple support rollers (17) are provided inside the conveyor belt (37).

5. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The air inlet pipe (6) is equipped with a first fan, and the discharge pipe (9) is equipped with multiple fans, among which the discharge pipe (9) near the feed inlet (3) is equipped with a second fan.

6. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The combustion section (5) is provided with a combustion chamber (18). The combustion grate (39) is horizontally arranged in the combustion chamber (18) below the slide (4). Several support rods (19) are arranged vertically on the upper side of the combustion grate (39). A heat exchanger (20) is provided above the combustion grate (39) in the combustion chamber (18). The exhaust pipe (8) is connected to the top of the combustion chamber (18).

7. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The movable component includes an extension plate (21). The outer wall of the combustion section (5) has a third sliding hole (22) connected to the combustion chamber (18) on the lower side of the slide rail (4). The extension plate (21) is slidably disposed in the third sliding hole (22). The extension plate (21) is parallel to the bottom of the slide rail (4). A fourth sliding hole (23) is provided at one end of the extension plate (21) facing the outside of the combustion section (5). A guide rod is slidably disposed in the fourth sliding hole (23). (24) A fixing block (25) is provided on the lower side of the slide (4). One end of the guide rod (24) is connected to the fixing block (25). A drive groove is recessed on the lower side of the extension plate (21). A rack (26) is provided in the drive groove. A drive motor (27) is installed on the combustion part (5) below the slide (4). A drive gear (28) is provided on the output shaft of the drive motor (27). The drive gear (28) meshes with the rack (26).

8. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The lower side of the combustion grate (39) is connected to a first impact ball (30) via an elastic rod (29). The combustion chamber (18) is provided with a fifth sliding hole (31) connecting the inside and outside below the combustion grate (39). An operating rod (32) is slidably arranged in the fifth sliding hole (31). One end of the operating rod (32) is placed in the combustion chamber (18) and the other end is connected to a second impact ball (33). The other end of the operating rod (32) is placed outside the combustion part (5) and is connected to an operating handle (34). A protective sleeve (35) is provided around the fifth sliding hole (31) on the outer wall of the combustion part (5).

9. The incineration process for municipal solid waste combustion rods according to claim 1, characterized in that: The combustion chamber (18) has several air supply pipes (36) below the combustion grate (39) for supplying air to the combustion chamber (18).

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