Garbage microwave cracking furnace

Abstract

The invention discloses a garbage microwave cracking furnace which comprises a hollow shell, a pyrolyzing furnace which is obliquely arranged is rotationally connected in the shell, the pyrolyzing furnace is made of a material capable of being penetrated by microwaves, a driving motor used for driving the pyrolyzing furnace to rotate is installed in the shell, and a plurality of microwave generators facing the pyrolyzing furnace are installed at the upper end of the shell; an upper rotating frame rotationally connected with the upward end of the pyrolyzing furnace is connected into the shell, an upper rotating opening is formed in the upward end of the pyrolyzing furnace, the upper rotating frame is connected with a rotating disc which extends into the upper rotating opening and is rotationally connected with the upper rotating opening, and the rotating disc is outwards connected with a feeding pipe which extends out of the shell and is communicated with the interior of the pyrolyzing furnace; a lower rotating frame rotationally connected with the downward end of the pyrolyzing furnace is connected into the shell, and the lower rotating frame is provided with a connecting sleeve sleeving the downward end of the pyrolyzing furnace. When garbage is subjected to microwave cracking, the garbage can be rotated and turned over, so that the whole garbage is uniformly heated, and the occurrence probability of side reaction is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of garbage disposal, and in particular to a garbage microwave cracking furnace. Background Art

[0002] With the acceleration of global urbanization, the treatment of solid waste has become an important issue in the field of environmental protection. Although traditional waste disposal methods such as landfill and incineration have solved the problem of waste disposal to a certain extent, they have also brought new environmental problems such as land resource occupation, greenhouse gas emissions and secondary pollution. Therefore, it is particularly important to seek a new waste disposal technology that is efficient, environmentally friendly and can achieve resource recycling.

[0003] In this context, garbage microwave cracking technology came into being. As an emerging thermochemical treatment method, garbage microwave cracking uses microwave energy to decompose organic waste in an oxygen-deficient or oxygen-free environment, converting it into valuable products such as combustible gas, liquid oil and solid charcoal. Compared with traditional heating methods, microwave heating has the characteristics of fast heating speed, high energy utilization rate and environmental friendliness. It is especially suitable for treating organic waste that is difficult to degrade, and provides a new idea for solving the current garbage disposal problem.

[0004] However, in actual application, garbage microwave cracking technology also faces some challenges. First, due to the significant differences in the heating capacity of microwaves for different materials, the various components in the garbage cannot be heated evenly. This unevenness causes some garbage to fail to reach the optimal cracking temperature, affecting the efficiency of the entire treatment process. Secondly, when the garbage enters the cracking furnace, due to the high stacking density and irregular shape, the penetration depth of microwave energy is further hindered, resulting in a slower heating of the internal garbage, thereby increasing the probability of side reactions, such as coking, polymerization and other reactions that are not conducive to resource recycling. Summary of the invention

[0005] The purpose of the present invention is to provide a garbage microwave cracking furnace, which can rotate and turn the garbage during microwave cracking so that the garbage can be heated evenly as a whole to reduce the probability of side reactions.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a garbage microwave cracking furnace, comprising a hollow shell, a pyrolysis furnace arranged obliquely and rotatably connected in the shell, the pyrolysis furnace being made of a material that can be penetrated by microwaves, a driving motor for driving the pyrolysis furnace to rotate being installed in the shell, a plurality of microwave generators facing the pyrolysis furnace being installed at the upper end of the shell, an upper rotating frame rotatably connected to an upward end of the pyrolysis furnace being connected in the shell, an upper rotating port being arranged at an upward end of the pyrolysis furnace, a rotating disk extending into the upper rotating port and rotatably connected thereto being connected to the upper rotating frame, a feeding pipe extending out of the shell and communicating with the interior of the pyrolysis furnace being connected to the rotating disk outwardly, an exhaust pipe extending out of the shell and communicating with the interior of the pyrolysis furnace being connected to the upper side of the rotating disk outwardly;

[0007] The shell is connected to a lower rotating frame which is rotatably connected to a downward end of the pyrolysis furnace, and the lower rotating frame is provided with a connecting sleeve which covers the downward end of the pyrolysis furnace, and the edge of the downward end of the pyrolysis furnace is provided with a plurality of discharge ports distributed in a circumferential manner, and the lower part of the connecting sleeve is provided with a discharge channel which cooperates with the discharge port, and the discharge channel is connected to the outside with a discharge pipe which passes through the shell, and the lower part of the free end of the discharge pipe is provided with a discharge port, and a spiral discharge rod is rotatably connected to the discharge pipe, and a discharge motor for driving the spiral discharge rod to rotate is installed at the free end of the discharge pipe, and the lower rotating frame is connected with an oil collecting trough which covers the lower end of the discharge channel, and the lower end of the discharge channel is provided with a plurality of oil seepage holes which are connected with the oil collecting trough, and the oil collecting trough is connected to the outside with an oil discharge pipe which passes through the shell.

[0008] By adopting the above technical scheme, the garbage is gradually added into the feeding pipe through the elevator, and then gradually added into the pyrolysis furnace through the feeding pipe. The driving motor drives the pyrolysis furnace to rotate slowly and continuously, so that the garbage inside is constantly turned and stirred. During the process, the microwave generator emits microwaves through the pyrolysis furnace to act on the garbage inside it, causing it to heat up rapidly. Through continuous turning and stirring, the garbage is prevented from accumulating and difficult to heat the inside. In addition, through such mixing, the unevenly heated materials can be evenly mixed to achieve overall uniform heating and pyrolysis. The gas generated during the pyrolysis process is discharged through the exhaust pipe. During the continuous turning and pyrolysis of the garbage, the product of the pyrolysis furnace toward the lower end gradually enters the discharge channel through the discharge port. In the discharge channel, tar enters the oil collecting tank through the oil seepage hole and is finally discharged through the oil discharge pipe. The remaining solid carbon is discharged from the discharge port by the spiral discharge rod driven by the discharge motor.

[0009] The present invention is further configured as follows: a galvanized metal reflective layer is provided in the shell on a side of the pyrolysis furnace away from the microwave generator.

[0010] The present invention is further configured as follows: a support rotating hole is opened in the middle of the connecting sleeve, a support rotating shaft rotatably connected to the support rotating hole is arranged at the downward end of the pyrolysis furnace, a free end of the support rotating shaft passes through the support rotating hole and is provided with a driven pulley, the power output shaft of the drive motor is connected to a driving pulley, and the driving pulley and the driven pulley are driven by a belt.

[0011] The present invention is further configured as follows: the pyrolysis furnace is made of silicon nitride ceramic material.

[0012] The present invention is further configured as follows: the inner wall of the pyrolysis furnace is provided with a plurality of stirring bars arranged along the length direction thereof and distributed in a circumference.

[0013] The present invention is further configured as follows: the edge of the pyrolysis furnace toward the lower end is divided into a plurality of discharge ports by a plurality of connecting bars which are connected to the stirring bars in a one-to-one correspondence.

[0014] The present invention is further configured as follows: the upper end of the feeding pipe is connected to a feeding hopper.

[0015] The present invention is further configured as follows: the upper end of the feeding hopper is sealed and a feeding port connected to the interior of the pyrolysis furnace is provided at a position away from the pyrolysis furnace; a feeding motor is installed at the upper end of the feeding hopper; a spiral feeding rod extending into the feeding pipe is provided downwardly on the power output shaft of the feeding motor.

[0016] The present invention is further configured as follows: the microwave generator is a terahertz microwave generator.

[0017] In summary, the present invention has the following beneficial effects: the present invention utilizes microwave heating to rapidly heat up and crack garbage. During the process, the pyrolysis furnace is driven by a driving motor to rotate slowly and continuously, so that the garbage is constantly turned over to prevent the garbage from slowly heating up inside due to accumulation. The difference in the heating capacity of microwaves for different materials enables the heat to be evenly distributed and transferred during the turning process, so that the garbage as a whole is evenly heated and heated to reduce the probability of side reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a partial cross-sectional view for showing the internal structure of the present invention;

[0020] Figure 3 It is a partial cross-sectional view of the internal structure of a garbage pyrolysis furnace;

[0021] Figure 4 Used to demonstrate the connection between the rotating disk and the feeding tube;

[0022] Figure 5Used to demonstrate the connection between the connecting sleeve, the discharge pipe and the oil collecting tank.

[0023] In the figure: 1. Shell; 11. Galvanized metal reflective layer; 12. Upper rotating frame; 13. Rotating disk; 14. Exhaust pipe; 15. Lower rotating frame; 2. Pyrolysis furnace; 21. Stirring bar; 22. Upper rotating port; 23. Supporting shaft; 24. Driven pulley; 25. Connecting bar; 26. Discharging port; 3. Microwave generator; 4. Feeding pipe; 41. Feeding hopper; 42. Feeding port; 43. Discharging motor; 44. Spiral discharging rod; 5. Connecting sleeve; 51. Supporting rotating hole; 52. Discharging channel; 53. Oil seepage hole; 6. Driving motor; 61. Driving pulley; 7. Discharging pipe; 71. Discharging port; 72. Discharging motor; 73. Spiral discharging rod; 8. Oil collecting tank; 81. Oil outlet pipe. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example, see Figure 1-5A garbage microwave cracking furnace comprises a hollow shell 1, in which an inclined pyrolysis furnace 2 is rotatably connected, the pyrolysis furnace 2 is made of a material that can be penetrated by microwaves, the pyrolysis furnace 2 is made of silicon nitride ceramic material, the inner wall of the pyrolysis furnace 2 is provided with a plurality of stirring bars 21 arranged along its length direction and distributed in a circumference, a plurality of microwave generators 3 facing the pyrolysis furnace 2 are installed at the upper end of the shell 1, the microwave generator 3 is a terahertz microwave generator 3, compared with ordinary microwave generators 3 when penetrating non-metallic materials, the terahertz microwave generator 3 has less energy attenuation when penetrating non-metallic materials, can achieve more uniform body heating, and reduce the risk of local overheating, a galvanized metal reflective layer 11 is provided on the side of the pyrolysis furnace 2 away from the microwave generator 3 in the shell 1, which is used to reflect microwaves and improve heating efficiency.

[0029] An upper rotating frame 12 is connected to the shell 1 and is rotatably connected to the upper end of the pyrolysis furnace 2. An upper rotating port 22 is provided at the upper end of the pyrolysis furnace 2. A rotating disk 13 is connected to the upper rotating frame 12 and is rotatably connected to the upper rotating port 22. The rotating disk 13 is externally connected to a feeding pipe 4 extending out of the shell 1 and communicating with the inside of the pyrolysis furnace 2. The upper end of the feeding pipe 4 is connected to a feeding hopper 41. The upper end of the feeding hopper 41 is sealed and a feeding port 42 communicating with the inside is provided away from the pyrolysis furnace 2. A feeding motor 43 is installed at the upper end of the feeding hopper 41. A spiral feeding rod 44 extending into the feeding pipe 4 is provided downwardly on the power output shaft of the feeding motor 43, so as to facilitate the slow addition of materials into the pyrolysis furnace 2. An exhaust pipe 14 extending out of the shell 1 and communicating with the inside of the pyrolysis furnace 2 is externally connected to the upper side of the rotating disk 13, so as to realize feeding and exhausting during the rotation of the pyrolysis furnace 2.

[0030] A lower rotating frame 15 is connected to the shell 1 and is rotatably connected to the downward end of the pyrolysis furnace 2. The lower rotating frame 15 is provided with a connecting sleeve 5 that covers the downward end of the pyrolysis furnace 2 and is rotatably connected thereto. A supporting rotating hole 51 is opened in the middle of the connecting sleeve 5. A supporting rotating shaft 23 rotatably connected to the supporting rotating hole 51 is provided at the downward end of the pyrolysis furnace 2. A driven pulley 24 is provided at the free end of the supporting rotating shaft 23 that passes through the supporting rotating hole 51. A driving motor 6 for driving the pyrolysis furnace 2 to rotate is installed in the shell 1. The power output shaft of the driving motor 6 is connected to a driving pulley 61. The driving pulley 61 and the driven pulley 24 are driven by a belt.

[0031] The edge opening of the pyrolysis furnace 2 toward the lower end is divided into a plurality of discharge ports 26 by a plurality of connecting strips 25 connected one-to-one with the stirring strips 21. A discharge channel 52 matching the discharge port 26 is provided outwardly at the lower part of the connecting sleeve 5, so that the solid char and tar in the pyrolysis furnace 2 can enter the discharge channel 52 through the discharge port 26. The discharge channel 52 is connected to a discharge pipe 7 passing through the shell 1. A discharge pipe 7 is provided at the lower part of the free end of the discharge pipe 7. The outlet 71 is provided with a spiral discharge rod 73 which is rotatably connected in the discharge pipe 7. A discharge motor 72 for driving the spiral discharge rod 73 to rotate is installed at the free end of the discharge pipe 7. The lower rotating frame 15 is connected with an oil collecting tank 8 which covers the lower end of the discharge channel 52. A plurality of oil seepage holes 53 which are connected with the oil collecting tank 8 are provided at the lower end of the discharge channel 52. Through the oil seepage holes 53, the tar in the discharge channel 52 can gradually seep into the oil collecting tank 8. The oil collecting tank 8 is connected with an oil outlet pipe 81 which passes through the shell 1.

[0032] Working principle: garbage is gradually added into the feeding hopper 41 through the elevator, and then gradually added into the pyrolysis furnace 2 through the unloading motor 43. The driving motor 6 drives the pyrolysis furnace 2 to rotate slowly and continuously, so that the garbage inside is constantly turned and stirred. During the process, the microwave generator 3 emits microwaves through the pyrolysis furnace 2 to act on the garbage inside it, so that it heats up quickly. Through continuous turning and stirring, the garbage is prevented from accumulating and it is difficult to heat the inside. In addition, through such mixing, the unevenly heated materials can be evenly mixed to achieve overall uniform heating and pyrolysis. The gas generated during the pyrolysis process is discharged through the exhaust pipe 14. During the continuous turning and pyrolysis of the garbage, the product of the pyrolysis furnace 2 toward the lower end gradually enters the discharge channel 52 through the discharge port 26. In the discharge channel 52, tar enters the oil collecting tank 8 through the oil seepage hole 53, and is finally discharged through the oil discharge pipe 81. The remaining solid carbon is discharged from the discharge port 71 by the spiral discharge rod 73 driven by the discharge motor 72.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A garbage microwave cracking furnace, comprising a hollow shell (1), characterized in that: A pyrolysis furnace (2) arranged obliquely is rotatably connected in the shell (1), the pyrolysis furnace (2) being made of a material that can be penetrated by microwaves, a driving motor (6) for driving the pyrolysis furnace (2) to rotate is installed in the shell (1), a plurality of microwave generators (3) facing the pyrolysis furnace (2) are installed at the upper end of the shell (1), an upper rotating frame (12) rotatably connected to an upward end of the pyrolysis furnace (2) is connected in the shell (1), an upper rotating opening (22) is provided at the upward end of the pyrolysis furnace (2), a rotating disk (13) extending into the upper rotating opening (22) and rotatably connected thereto is connected to the upper rotating frame (12), a feeding pipe (4) extending out of the shell (1) and communicating with the interior of the pyrolysis furnace (2) is externally connected to the rotating disk (13), and an exhaust pipe (14) extending out of the shell (1) and communicating with the interior of the pyrolysis furnace (2) is externally connected to the upper side of the rotating disk (13); The shell (1) is connected to a lower rotating frame (15) rotatably connected to the downward end of the pyrolysis furnace (2); the lower rotating frame (15) is provided with a connecting sleeve (5) which is arranged on the downward end of the pyrolysis furnace (2); the edge of the downward end of the pyrolysis furnace (2) is provided with a plurality of discharge ports (26) distributed in a circumferential manner; the lower part of the connecting sleeve (5) is provided with a discharge channel (52) matched with the discharge port (26); the discharge channel (52) is connected to the outside with a discharge pipe (7) passing through the shell (1); the discharge pipe (7) A discharge port (71) is provided at the lower part of the free end, a spiral discharge rod (73) is rotatably connected inside the discharge pipe (7), a discharge motor (72) for driving the spiral discharge rod (73) to rotate is installed at the free end of the discharge pipe (7), the lower rotating frame (15) is connected to an oil collecting trough (8) which covers the lower end of the discharge channel (52), a plurality of oil seepage holes (53) which are connected to the oil collecting trough (8) are provided at the lower end of the discharge channel (52), and the oil collecting trough (8) is externally connected to an oil discharge pipe (81) which passes through the shell (1).

2. The garbage microwave cracking furnace according to claim 1, characterized in that: A galvanized metal reflective layer (11) is provided in the shell (1) on a side of the pyrolysis furnace (2) away from the microwave generator (3).

3. The garbage microwave cracking furnace according to claim 1, characterized in that: A support rotating hole (51) is provided in the middle of the connecting sleeve (5); a support rotating shaft (23) rotatably connected to the support rotating hole (51) is provided at the downward end of the pyrolysis furnace (2); a free end of the support rotating shaft (23) passes through the support rotating hole (51) and is provided with a driven pulley (24); a power output shaft of the driving motor (6) is connected to a driving pulley (61); and the driving pulley (61) and the driven pulley (24) are driven by a belt.

4. The garbage microwave cracking furnace according to claim 1, characterized in that: The pyrolysis furnace (2) is made of silicon nitride ceramic material.

5. The garbage microwave cracking furnace according to claim 1, characterized in that: The inner wall of the pyrolysis furnace (2) is provided with a plurality of stirring bars (21) arranged along its length direction and distributed in a circumferential manner.

6. The garbage microwave cracking furnace according to claim 5, characterized in that: The edge of the pyrolysis furnace (2) toward the lower end is divided into a plurality of discharge ports (26) by a plurality of connection bars (25) connected in a one-to-one correspondence with the stirring bars (21).

7. The garbage microwave cracking furnace according to claim 1, characterized in that: The upper end of the feeding pipe (4) is connected to a feeding hopper (41).

8. The garbage microwave cracking furnace according to claim 7, characterized in that: The upper end of the feeding hopper (41) is sealed and a feeding port (42) communicating with the interior of the pyrolysis furnace (2) is provided at a position away from the pyrolysis furnace (2). A feeding motor (43) is installed at the upper end of the feeding hopper (41). A spiral feeding rod (44) extending into the feeding pipe (4) is provided downwardly on the power output shaft of the feeding motor (43).

9. The garbage microwave cracking furnace according to claim 1, characterized in that: The microwave generator (3) is a terahertz microwave generator (3).

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