Garbage gasifier

Abstract

Disclosed in the present invention is a garbage gasifier, comprising a combustion cavity, wherein the combustion cavity comprises a first chamber (1) and a second chamber (2), which are in communication with each other; a feeding port (3) and an exhaust port (10) are provided in the top of the second chamber (2); a feeding-port material pushing assembly (11) is provided below the feeding port (3); the second chamber (2) comprises a first side wall (21), which is obliquely arranged, and a second side wall (22), which is arranged opposite the first side wall (21); a horizontal material-pushing assembly (4) is provided at a lower portion of the second chamber (2); a first air supply pipe (41) in communication with the outside is provided inside the horizontal material-pushing assembly (4); and the horizontal material-pushing assembly (4) is configured to loosen garbage and provide combustion-supporting air. The present invention has the advantages of high combustion efficiency, energy conservation and environmental protection, etc.

Description

A garbage gasification furnace

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on and claims priority to a Chinese patent application filed on July 24, 2023, with application number 202310913495.6 and invention name “A Garbage Gasification Furnace”. The full text of the Chinese patent application is incorporated herein by reference as a part of this application.

Technical field

[0003] The present invention mainly relates to the field of garbage combustion equipment, in particular to a garbage gasification furnace. [Background Technology]

[0004] Garbage is a pollutant generated by human production activities. A large amount of waste is extremely harmful to the environment, mainly manifested in occupying land, polluting the atmosphere, soil and water bodies, and the damage caused is difficult to recover. The existing urban domestic waste disposal technology is low, domestic waste disposal requires a lot of money, and the environmental pollution is serious. It has become an important bottleneck affecting my country's urban living environment and restricting urban development.

[0005] At present, the three main methods used to deal with urban domestic waste are landfill, composting and incineration. Compared with landfill and composting, incineration has the advantages of volume and weight reduction, on-site treatment, fast processing speed, heat recovery, and high degree of harmlessness. Therefore, domestic waste incineration power generation is an important way to develop new energy and domestic waste disposal. However, the waste incineration equipment in the existing technology still has the following problems: high equipment investment cost, large footprint; unstable and uneven combustion, low burnout rate and other problems.

[0006] Garbage gasification is one of the new technologies for waste incineration. Compared with traditional waste incineration technology, it can gasify garbage into combustible gas in an oxygen-free or oxygen-deficient environment, which can more effectively reduce the production of dioxins than traditional incinerators. At the same time, compared with traditional incinerators, the flue gas dust produced by garbage gasification is less and easier to handle.

[0007] [Summary of the invention]

[0008] In view of the technical problems existing in the prior art, the present invention provides a garbage gasification furnace with high combustion efficiency, energy saving and environmental protection.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A garbage gasification furnace includes a combustion chamber, which includes a first chamber and a second chamber that are interconnected, a feed port and an exhaust port are provided at the top of the second chamber, a feed port pushing assembly is provided below the feed port, the second chamber includes a first side wall arranged at an angle and a second side wall arranged opposite to the first side wall, a horizontal pushing assembly is provided at the lower part of the second chamber, a first air supply pipe connected to the outside is provided inside the horizontal pushing assembly, and the horizontal pushing assembly is used to loosen the garbage and provide air to support combustion.

[0011] In some embodiments of the present invention, the second side wall is arc-shaped.

[0012] In some embodiments of the present invention, the combustion chamber further includes a slag collecting chamber and a slag discharge pusher communicated with the first chamber, and the slag discharge pusher reciprocates in a horizontal direction to push the burned slag into the slag collecting chamber.

[0013] In some embodiments of the present invention, at least one loosening device is provided at the bottom of the combustion chamber, and the loosening device moves up and down in a vertical direction to loosen the garbage.

[0014] In some embodiments of the present invention, a second air supply duct communicating with the outside is provided in the loosening device.

[0015] In some embodiments of the present invention, a conical tip is provided at the top of the loosening device.

[0016] In some embodiments of the present invention, at least one first air supply hole is provided on the side wall of the first chamber.

[0017] In some embodiments of the present invention, at least one second air supply hole is provided on the side wall of the second chamber.

[0018] In some embodiments of the present invention, an acid removal device is further included, and the acid removal device is used to inject acid removal material into the combustion chamber.

[0019] In some embodiments of the present invention, an injection device is further included, wherein the injection device is used to inject combustion-supporting gas into the combustion chamber.

[0020] In some embodiments of the present invention, the acid removal device includes a plurality of spray heads.

[0021] In some embodiments of the present invention, a first air supply pipe and a boiler mechanism are further included, one end of the air supply pipe is connected to the exhaust port, and the other end of the first air supply pipe is connected to the second chamber through the boiler mechanism, and the air supply pipe is used to re-introduce the hot air into the second chamber.

[0022] In some embodiments of the present invention, a secondary combustion chamber is further included, and the secondary combustion chamber is connected to the exhaust port through a second air supply pipe.

[0023] In some embodiments of the present invention, an acid removal device is provided in the secondary combustion chamber, and the acid removal device is used to inject acid removal material into the secondary combustion chamber.

[0024] In some embodiments of the present invention, the secondary combustion chamber is provided with an air outlet, and the air outlet is connected to the second chamber through a third air supply pipe.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] 1. In the garbage gasification furnace of the present invention, garbage is grabbed by a robotic arm and enters from the feed port, and is pushed into the second chamber through the feed port pushing assembly. The garbage quickly slides along the inclined first side wall of the second chamber into the second chamber for combustion. When the amount of garbage entering increases and accumulates into a mass, a horizontal pushing assembly is provided at the lower part of the second chamber. The horizontal pushing assembly moves back and forth in the horizontal direction to loosen the accumulated garbage, and introduces air into the second chamber through the first air supply pipe so that the garbage is in full contact with the air. The curved second side wall will guide the gas to circulate in the second chamber, so that the garbage is burned more fully, avoiding the problem of low combustion efficiency due to insufficient combustion of garbage accumulated into a mass.

[0027] 2. In the garbage gasification furnace of the present invention, the garbage is burned for the first time in the second chamber. Under the push of the horizontal pushing assembly, the clumped garbage is loosened and dispersed and falls into the first chamber for secondary combustion. A loosening device is provided at the bottom of the combustion chamber. The loosening device is used to lift the clumped garbage that has fallen into the bottom of the first chamber upward in the vertical direction. During the lifting process, the garbage is loosened, and air is introduced through the second air supply pipe in the loosening device, so that the garbage is fully in contact with the air, which promotes more complete combustion of the garbage. The combustion rate of the garbage is greatly improved by the two-way ventilation and combustion-assisted method.

[0028] 3. In the garbage gasification furnace of the present invention, garbage is burned in the combustion chamber, continuously generating high-temperature flue gas. By setting up an air supply pipe, the high-temperature flue gas generated during the garbage incineration process is reintroduced into the second chamber, which is beneficial to drying the wet garbage that has just entered, realizing the recovery and utilization of heat energy, and having a good energy-saving effect.

[0029] 4. The garbage gasification furnace of the present invention is provided with a slag collection chamber connected to the first chamber below. After the garbage completes secondary combustion, the slag discharge assembly reciprocates in the horizontal direction to push the slag into the slag collection chamber, thereby realizing automatic cleaning of the slag and greatly reducing labor intensity.

Brief Description of the Drawings

[0030] FIG1 is a cross-sectional view of a first embodiment of the present invention.

[0031] FIG2 is a cross-sectional view of a second specific embodiment of the present invention.

[0032] Legend: 1. First chamber; 2. Second chamber; 21. First side wall; 22. Second side wall; 3. Feed port; 4. Horizontal pusher assembly; 41. First air duct; 5. Loosening device; 51. Second air duct; 52. Cone tip; 6. First air hole; 7. Second air hole; 8. Acid removal device; 81. Sprinkler head; 9. First air duct; 10. Exhaust port; 11. Feed port pusher assembly; 12. Boiler mechanism; 13. Slag collecting chamber; 14. Slag removal pusher; 15. Secondary combustion chamber; 16. Second air duct; 17. Third air duct; 18. Injection device. [Specific implementation method]

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1

[0038] As shown in Figure 1, this embodiment provides a garbage gasification furnace, including a combustion chamber, which includes a first chamber 1 and a second chamber 2 that are interconnected. The top of the first chamber 1 is provided with an inlet 3 and an exhaust port 10, and a inlet pushing assembly 11 is provided below the inlet 3. The second chamber 2 includes an inclined first side wall 21 and a second side wall 22 arranged opposite to the first side wall 21. A horizontal pushing assembly 4 is provided at the lower part of the second chamber 2, and a first air supply duct 41 connected to the outside is provided inside the horizontal pushing assembly 4. The horizontal pushing assembly 4 is used to loosen the garbage and provide air to support combustion.

[0039] In this embodiment, the first side wall 21 is a slope about 20 meters long, and the angle between the first side wall 21 and the horizontal plane is not less than 45 degrees. The outer wall of the combustion chamber adopts a double-layer structure and has a cavity, which can be ventilated or introduced into the cavity with heat exchange medium.

[0040] In this embodiment, a gas jet hole is provided on the side wall of the feed port 3, and dry gas can be introduced through the gas jet hole to dry the garbage.

[0041] In this embodiment, the second side wall 22 is designed to be arc-shaped.

[0042] The garbage is grabbed by the robotic arm and enters from the feed port 3, and is pushed into the second chamber 2 through the feed port pushing assembly 11. The garbage quickly slides along the inclined first side wall 21 into the second chamber 2 for combustion. When the amount of garbage entering increases and accumulates into clumps, the horizontal pushing assembly 4 set at the lower part of the second chamber 2 moves back and forth in the horizontal direction to loosen the accumulated garbage, and introduces air into the first chamber 1 through the first air supply pipe 41 so that the garbage is in full contact with the air. The curved second side wall 22 will guide the gas to circulate in the first chamber 1, so that the garbage can be burned more fully, avoiding the problem of low combustion efficiency due to insufficient combustion of garbage accumulated into clumps.

[0043] In this embodiment, the combustion chamber further includes a slag collection chamber 13 and a slag removal pusher 14 connected to the first chamber 1. The slag removal pusher 14 reciprocates horizontally to push the burned slag into the slag collection chamber 13. After the secondary combustion of the waste is completed, the slag removal pusher 14 reciprocates horizontally to push the slag into the slag collection chamber 13, achieving automatic slag cleaning and greatly reducing labor intensity.

[0044] In this embodiment, at least one loosening device 5 is provided at the bottom of the combustion chamber, and the loosening device 5 moves up and down in the vertical direction to loosen the garbage. The garbage is burned for the first time in the second chamber 2. Under the push of the horizontal pushing assembly 4, the clumped garbage is loosened and dispersed and falls into the first chamber 1 for secondary combustion. The garbage that has fallen into the bottom of the first chamber 1 and piled up in a clumping state is lifted up in the vertical direction by the loosening device 5. During the lifting process, the garbage is loosened, and air is introduced through the second air supply pipe 51 in the loosening device 5, so that the garbage is fully in contact with the air, which promotes more complete combustion of the garbage. The burnout rate of the garbage is greatly improved by the two-way ventilation and combustion-aiding method.

[0045] In this embodiment, the top of the loosening device 5 is provided with a cone tip 52. The cone tip 52 can loosen and disperse the large pieces of garbage that have been agglomerated by the up and down movement of the cone tip 52, which is conducive to the full combustion of the garbage.

[0046] In this embodiment, the side wall of the first chamber 1 is provided with at least one first air supply hole 6, and the side wall of the second chamber 2 is provided with at least one second air supply hole 7. The first air supply hole 6 and the second air supply hole 7 are connected to an air compressor or a fan to introduce air into the first chamber 1 and the second chamber 2, which helps to fully burn the garbage.

[0047] In this embodiment, an acid removal device 8 is also included. The acid removal device 8 is used to spray acid removal substances (such as alkaline liquid, lime, etc.) into the combustion chamber. The acid removal device 8 includes multiple spray heads 81. The alkaline substances are evenly sprayed through the multiple spray heads 81 to reduce the emission of acidic gases such as HCL and SO2 generated during the waste incineration process, thereby reducing the impact on the environment.

[0048] In this embodiment, an injection device 18 is also included. The injection device 18 is used to inject combustion-supporting gas into the combustion chamber to make the garbage incineration more complete.

[0049] In this embodiment, a first air supply pipe 9 and a boiler mechanism 12 are further included. One end of the first air supply pipe 9 is connected to the exhaust port 10, and the other end of the first air supply pipe 9 is connected to the second chamber 2 through the boiler mechanism 12. An air supply port for introducing hot flue gas is provided on the first side wall 21. The first air supply pipe 9 re-introduces the hot flue gas into the second chamber 2 through the air supply port. Since the flue gas generated by garbage incineration still has a large amount of heat, and the garbage entering from the feed port 3 is initially relatively humid, the high-temperature flue gas generated during the garbage incineration process is introduced into the boiler mechanism 12 through the first air supply pipe 9 for utilization and then introduced into the second chamber 2. This is conducive to promoting rapid drying of the garbage, and realizes the recycling of heat energy, with good energy-saving effects.

[0050] The working principle is as follows: garbage is grabbed by the robotic arm and enters from the feed port 3, and is pushed into the second chamber 2 through the feed port pushing assembly 11. The garbage quickly slides along the inclined first side wall 21 to the second chamber 2 for combustion. When the amount of garbage entering increases and accumulates into a mass, the horizontal pushing assembly 4 set at the lower part of the second chamber 2 moves back and forth in the horizontal direction to loosen the accumulated garbage, and introduces air into the first chamber 1 through the first air supply pipe 41 so that the garbage is fully in contact with the air. The curved second side wall 22 will guide the gas to circulate in the first chamber 1, so that the garbage is more fully burned, and the garbage undergoes the first combustion in the second chamber 2. Secondary combustion: Under the push of the horizontal pushing assembly 4, the clumped garbage is loosened and dispersed and falls into the first chamber 1 for secondary combustion. A loosening device 5 is provided at the bottom of the combustion chamber, and the garbage that has fallen into the bottom of the first chamber 1 and piled up in a clumping state is lifted up in the vertical direction by the loosening device 5. During the lifting process, the garbage is loosened, and air is introduced through the second air supply pipe 51 in the loosening device 5, so that the garbage is fully in contact with the air, which promotes more complete combustion of the garbage. The burnout rate of the garbage is greatly improved by the two-way ventilation and combustion-aiding method; the slag after combustion is pushed into the slag collecting chamber 13 by the slag discharge pusher 14 reciprocating in the horizontal direction, so as to realize automatic cleaning of the slag.

[0051] Example 2

[0052] As shown in Figure 2, this embodiment is substantially the same as the first embodiment, except that it further includes a secondary combustion chamber 15, which is connected to the exhaust port 10 via a second air supply pipe 16. As the garbage burns in the combustion chamber, some incompletely burned combustibles may be present in the flue gas. The flue gas passes directly through the exhaust port 10 and the second air supply pipe 16 into the secondary combustion chamber 15, bypassing the boiler mechanism 12. This re-combustion of the flue gas maximizes the combustion of combustibles, further reducing resource waste.

[0053] In this embodiment, the secondary combustion chamber 15 is provided with an air outlet, which is connected to the second chamber 2 through the third air supply pipe 17. The hot gas generated by the combustion in the secondary combustion chamber 15 is reintroduced into the second chamber 2 through the third air supply pipe 17, thereby realizing the recovery and utilization of heat energy and having a good energy-saving effect.

[0054] In this embodiment, an acid removal device 8 is provided in the secondary combustion chamber 15. The acid removal device 8 is used to spray acid removal substances (such as alkaline liquid, lime, etc.) into the secondary combustion chamber 15. By evenly spraying the alkaline substances, the emission of acidic gases such as HCL and SO2 generated during the waste incineration process is reduced, thereby reducing the impact on the environment.

[0055] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A garbage gasification furnace, characterized in that: The invention comprises a combustion chamber, wherein the combustion chamber comprises a first chamber (1) and a second chamber (2) which are interconnected, a feed inlet (3) and an exhaust port (10) are provided at the top of the second chamber (2), a feed inlet pushing assembly (11) is provided below the feed inlet (3), the second chamber (2) comprises a first side wall (21) arranged obliquely and a second side wall (22) arranged opposite to the first side wall (21), a horizontal pushing assembly (4) is provided at the bottom of the second chamber (2), a first air supply pipe (41) which is connected to the outside is provided inside the horizontal pushing assembly (4), and the horizontal pushing assembly (4) is used to loosen garbage and provide air to assist combustion.

2. The garbage gasification furnace according to claim 1, characterized in that: The second side wall (22) is arc-shaped.

3. The garbage gasification furnace according to claim 1, characterized in that: The combustion chamber also includes a slag collecting chamber (13) and a slag discharge pusher (14) which are connected to the first chamber (1); the slag discharge pusher (14) reciprocates in a horizontal direction to push the burned slag into the slag collecting chamber (13).

4. The garbage gasification furnace according to claim 3, characterized in that: At least one loosening device (5) is provided at the bottom of the combustion chamber, and the loosening device (5) moves up and down in a vertical direction to loosen the garbage.

5. The garbage gasification furnace according to claim 4, characterized in that: A second air supply pipe (51) communicating with the outside is provided in the loosening device (5).

6. The garbage gasification furnace according to claim 4, characterized in that: The top end of the loosening device (5) is provided with a cone tip (52).

7. The garbage gasification furnace according to claim 1, characterized in that: At least one first air supply hole (6) is provided on the side wall of the first chamber (1).

8. The garbage gasification furnace according to claim 1, characterized in that: At least one second air supply hole (7) is provided on the side wall of the second chamber (2).

9. The garbage gasification furnace according to any one of claims 1 to 8, characterized in that: It also comprises an acid removal device (8), wherein the acid removal device (8) is used to spray acid removal material into the combustion chamber.

10. The garbage gasification furnace according to any one of claims 1 to 8, characterized in that: It also comprises an injection device (18), wherein the injection device (18) is used to inject combustion-supporting gas into the combustion chamber.

11. The garbage gasification furnace according to claim 9, characterized in that: The acid removal device (8) comprises a plurality of spray heads (81).

12. The garbage gasification furnace according to any one of claims 1 to 8, characterized in that: It also includes a first air supply pipe (9) and a boiler mechanism (12), wherein one end of the first air supply pipe (9) is connected to the exhaust port (10), and the other end of the first air supply pipe (9) is connected to the second chamber (2) through the boiler mechanism (12), and the first air supply pipe (9) is used to reintroduce hot air into the second chamber (2).

13. The garbage gasification furnace according to any one of claims 1 to 7, characterized in that: It also comprises a secondary combustion chamber (15), wherein the secondary combustion chamber (15) is connected to the exhaust port (10) via a second air supply pipe (16).

14. The garbage gasification furnace according to claim 13, characterized in that: An acid removal device (8) is provided in the secondary combustion chamber (15), and the acid removal device (8) is used to spray acid removal substances into the secondary combustion chamber (15).

15. The garbage gasification furnace according to claim 13, characterized in that: The secondary combustion chamber (15) is provided with an air outlet, and the air outlet is connected to the second chamber (2) through a third air supply pipe (17).

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