Sufficient-combustion double-fire-grate inverted-air-draft type multi-combustion pyrolyzing furnace

Abstract

The utility model discloses a full-combustion double-grate inverted air draft type multi-combustion pyrolyzing furnace which comprises a furnace body, a combustion cavity is formed in the furnace body, an upper grate is fixedly installed in the combustion cavity, a lower grate is fixedly installed below the upper grate, and a secondary combustion chamber is wrapped on the outer ring of the lower grate and located in the furnace body. A third combustion chamber is wrapped on the outer ring of the upper fire grate and located in the furnace body, the second combustion chamber is filled with heat storage honeycomb steel wire balls, the third combustion chamber is filled with porous groove heat storage ceramic balls, and a cavity above the upper fire grate forms an upper combustion chamber. The waste gas at the top can be reversely pumped into the secondary combustion chamber at the bottom of the furnace body for secondary and tertiary combustion work, the combustion purification quality of the waste gas is improved, meanwhile, the internal main combustion chamber and the structures of the secondary combustion chamber and the tertiary combustion chamber are matched for use, so that flue gas containing waste can be combusted for multiple times, the pyrolysis effect of multiple combustion of garbage is achieved, and the environment is protected. And the pyrolysis quality and the flue gas emission quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis furnaces, in particular to a fully-combustion double-grate reverse draft type multi-fuel pyrolysis furnace. Background Art

[0002] Pyrolysis furnaces are used to treat domestic waste. The domestic waste generated in people's daily lives is of various types and complex composition. The comprehensive treatment of domestic waste is carried out in accordance with the principle of "reduction, harmlessness and resource utilization". First, the waste is classified. The solid waste containing toxic components needs to be removed by the pyrolysis furnace before entering the flue gas generator for combustion;

[0003] When a traditional pyrolysis furnace is in use, it will produce a large amount of unburned waste gas during the combustion process. These waste gases that cannot be fully burned will carry more harmful substances. Directly discharging them will cause greater air pollution and affect the environmental protection effect. For this reason, the utility model proposes a fully burned double-grate reverse draft multi-fuel pyrolysis furnace. Utility Model Content

[0004] The utility model aims to provide a fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fully-combustion double-grate inverted draft multi-fuel pyrolysis furnace, comprising a furnace body, a combustion cavity is arranged inside the furnace body, an upper grate is fixedly installed inside the combustion cavity, a lower grate is fixedly installed below the upper grate, a second combustion chamber is wrapped around the outer ring of the lower grate and located inside the furnace body, a third combustion chamber is wrapped around the outer ring of the upper grate and located inside the furnace body, the interior of the second combustion chamber is filled with heat-storing honeycomb steel balls, the interior of the third combustion chamber is filled with porous groove heat-storing ceramic balls, the cavity above the upper grate forms the upper combustion chamber, the cavity above the lower grate forms the lower combustion chamber, a smoke extraction pipe is fixedly connected to the outer wall on one side of the upper combustion chamber, the tail end of the smoke extraction pipe is fixedly connected to the input port of a smoke extraction pump, and the output port of the smoke extraction pump is communicated with the second combustion chamber through a pipeline.

[0006] Preferably, the second combustion chamber and the third combustion chamber are designed as an interconnected structure.

[0007] Preferably, a hydraulic pushing device is fixedly installed on the back of the upper combustion chamber and outside the furnace body, and the hydraulic pushing device is composed of a hydraulic driving cylinder and a pushing plate.

[0008] Preferably, a magnetizer is fixedly mounted on an outer wall of one side of the furnace body, an output end of the magnetizer is fixedly connected to a magnetizing pipe, and the magnetizing pipe is laid in the secondary combustion chamber at the bottom end of the furnace body.

[0009] Preferably, a feed port is fixedly mounted on an outer wall at one side of the bottom end of the furnace body.

[0010] Preferably, the specification of the heat storage honeycomb steel wire ball is Φ100mm.

[0011] Preferably, the specification of the porous groove heat storage ceramic ball is Φ35mm heat storage ceramic ball.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The double-grate reverse draft multi-combustion pyrolysis furnace of the utility model can, in actual use, through the reverse draft structural design, the exhaust gas at the top can be reversed to the second combustion chamber at the bottom of the furnace body for secondary and tertiary combustion, thereby improving the combustion and purification quality of the exhaust gas. At the same time, through the coordinated use of the internal main combustion chamber and the structures of the second combustion chamber and the third combustion chamber, the flue gas containing waste can be burned multiple times, which has the pyrolysis effect of garbage multi-combustion, effectively improving the pyrolysis quality and the emission quality of the flue gas. The multiple combustions have completely eliminated the harmful substances in the flue gas, which can effectively reduce air pollution, has a good environmental protection effect, and is suitable for garbage incineration for purification.

[0014] In addition, the utility model is equipped with a magnetizer, and the air magnetized by the magnetizer enters the second combustion chamber through the magnetization pipe. The pressurized air discharged upward can effectively stir the internal flue gas, garbage and air, thereby improving the combustion efficiency. At the same time, the magnetized air will produce wave impact, forming a magnetic fluid to bombard the large chain of organic matter, accelerate the decomposition of garbage, and improve the quality of pyrolysis and gasification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal cross-sectional structure of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the external top view structure of an embodiment of the utility model.

[0017] In the figure: 1. furnace body; 2. upper combustion chamber; 3. upper grate; 4. lower grate; 5. smoke extraction pipe; 6. smoke extraction pump; 7. secondary combustion chamber; 8. heat storage honeycomb steel balls; 9. tertiary combustion chamber; 10. porous groove heat storage ceramic balls; 11. exhaust port; 12. lower combustion chamber; 13. hydraulic pushing device; 14. magnetizer; 15. magnetization pipeline; 16. feed port. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-2 The utility model provides an embodiment of a fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace, comprising a furnace body 1, a combustion cavity is arranged inside the furnace body 1, an upper grate 3 is fixedly installed inside the combustion cavity, a lower grate 4 is fixedly installed below the upper grate 3, the diameter of the through hole on the upper grate 3 is larger than the diameter of the lower grate 4, the upper grate 3 and the lower grate 4 form an internal structure design of a double grate, so that a double-layer grate combustion design can be formed above the upper grate 3 and the lower grate 4;

[0022] The outer ring of the lower grate 4 is located inside the furnace body 1 and is wrapped with a second combustion chamber 7. The outer ring of the upper grate 3 is located inside the furnace body 1 and is wrapped with a third combustion chamber 9. The second combustion chamber 7 is filled with heat storage honeycomb steel balls 8. The heat storage honeycomb steel balls 8 are Φ100mm in size. The porous groove heat storage ceramic balls 10 are Φ35mm in size. The third combustion chamber 9 is filled with porous groove heat storage ceramic balls 10. The porous groove heat storage ceramic balls 10 are Φ35mm in size.

[0023] When the heat storage honeycomb steel ball 8 and the porous groove heat storage ceramic ball 10 are working, the heat inside can be stored at 900°C;

[0024] In order to facilitate the flue gas to smoothly enter the third combustion chamber 9 through the second combustion chamber 7, the second combustion chamber 7 and the third combustion chamber 9 are designed as an intercommunication structure;

[0025] Through the coordinated use of the internal main combustion chamber and the secondary combustion chamber 7 and the tertiary combustion chamber 9, the flue gas containing waste can be burned multiple times, which has the pyrolysis effect of multiple combustion of garbage, effectively improves the pyrolysis quality and the emission quality of flue gas, reduces air pollution, has a good environmental protection effect, and is suitable for purification by garbage incineration;

[0026] Moreover, an exhaust port 11 is fixedly installed on the outside of one side of the three combustion chamber 9, and an external pipeline can be connected through the exhaust port 11, so that the smoke can be easily discharged from the pyrolysis furnace of the utility model to carry out the next process;

[0027] The cavity above the upper grate 3 forms an upper combustion chamber 2, and the cavity above the lower grate 4 forms a lower combustion chamber 12. A smoke extraction pipe 5 is fixedly connected to the outer wall of one side of the upper combustion chamber 2. The tail end of the smoke extraction pipe 5 is fixedly connected to the input port of the smoke extraction pump 6. The output port of the smoke extraction pump 6 is interconnected with the second combustion chamber 7 through a pipeline.

[0028] The flue gas burned and pyrolyzed in the upper combustion chamber 2 and the lower combustion chamber 12 can be transported to the secondary combustion chamber 7 at the bottom through the smoke extraction pipe 5 and the smoke extraction pump 6, thereby effectively transporting the flue gas from the top to the bottom, completing the conveying characteristics of the backdraft, so as to fully purify and burn the flue gas afterwards.

[0029] In this embodiment, in order to facilitate the pushing and feeding of garbage, a hydraulic pushing device 13 is fixedly installed on the back of the upper combustion chamber 2 and outside the furnace body 1. The hydraulic pushing device 13 is composed of a hydraulic driving cylinder and a pushing plate. The pushing plate is driven by the hydraulic driving cylinder to slowly push the garbage, thereby completing the slow pushing and feeding of the garbage.

[0030] In this embodiment, in order to improve the efficiency of garbage pyrolysis, a magnetizer 14 is fixedly installed on the outer wall of one side of the furnace body 1, and a magnetizing pipe 15 is fixedly connected to the output end of the magnetizer 14. The magnetizing pipe 15 is laid in the secondary combustion chamber 7 at the bottom end of the furnace body 1;

[0031] With this structural design, the air magnetized by the magnetizer 14 enters the secondary combustion chamber 7 through the magnetization pipe 15, and the pressurized air discharged upward can effectively stir the flue gas and garbage inside to improve the combustion efficiency. At the same time, the magnetized air will produce wave impact, forming a magnetic fluid to bombard the large chain of organic matter, accelerate the decomposition of garbage, and improve the quality of pyrolysis gasification.

[0032] In this embodiment, in order to facilitate the injection of garbage before pyrolysis, a feed port 16 is fixedly installed on the outer wall of one side of the bottom end of the furnace body 1, and garbage can be injected through the provided feed port 16.

[0033] Working principle:

[0034] Before use, a pipe can be connected to the outside of the exhaust port 11, and the tail end of the external pipe can be connected to the air inlet of the next process equipment to ensure normal flue gas purification;

[0035] When the utility model is actually used, garbage that needs to be pyrolyzed can be injected through the provided feed port 16, and the injected garbage enters the main combustion chamber inside the furnace body for combustion and decomposition;

[0036] During the combustion and decomposition process in the main combustion chamber, a portion of incompletely burned flue gas will be generated. The flue gas is transported from the top to the inside of the secondary combustion chamber 7 at the tail through the smoke extraction pipe 5 and the smoke extraction pump 6. The combustion fire layer inside the secondary combustion chamber 7 performs secondary heating and combustion on the incompletely burned substances in the flue gas. At the same time, by arranging a heat storage honeycomb steel wool ball 8 inside the secondary combustion chamber, when the flue gas containing residual harmful substances passes through the 900°C steel wool ball, secondary combustion and purification can be performed, thereby improving the flue gas treatment effect.

[0037] The flue gas treated in the second combustion chamber 7 enters the third combustion chamber 9, which is provided with porous groove heat storage ceramic balls. When the unburned harmful substances pass through the 900°C porous groove heat storage ceramic balls, they are burned and purified again, and finally discharged through the exhaust port 11 and enter the next treatment equipment;

[0038] At the same time, when the furnace body 1 is pyrolyzing, the magnetizer 14 works synchronously, and the air magnetized by the magnetizer 14 enters the second combustion chamber 7 through the magnetization pipe 15. The pressurized air discharged upward can effectively stir the internal flue gas garbage to improve the combustion efficiency. At the same time, the magnetized air will produce wave impact, forming a magnetic fluid to bombard the large chain of organic matter, accelerate the decomposition of garbage, and improve the quality of pyrolysis gasification.

[0039] In summary, the double-grate reverse draft multi-combustion pyrolysis furnace of the utility model, in actual use, can reverse the exhaust gas at the top to the second combustion chamber at the bottom of the furnace body for secondary combustion through the reverse draft structural design, thereby improving the combustion and purification quality of the exhaust gas. At the same time, through the coordinated use of the internal main combustion chamber and the second combustion chamber 7 and the third combustion chamber 9, the flue gas containing waste can be burned multiple times, which has the pyrolysis effect of multiple combustion of garbage, effectively improves the pyrolysis quality and the emission quality of the flue gas, and multiple combustions have completely eliminated harmful substances in the flue gas, which can effectively reduce air pollution, has a good environmental protection effect, and is suitable for garbage incineration for purification.

[0040] At the same time, the utility model is equipped with a magnetizer. The air magnetized by the magnetizer 14 enters the second combustion chamber 7 through the magnetization pipe 15. The pressurized air discharged upward can effectively stir the internal flue gas garbage to improve the combustion efficiency. At the same time, the magnetized air will produce wave impact, forming a magnetic fluid to bombard the large chain of organic matter, accelerate the decomposition of garbage, and improve the quality of pyrolysis gasification.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fully-combustion double-grate reverse draft multi-fuel pyrolysis furnace, comprising a furnace body (1), characterized in that: The furnace body (1) is provided with a combustion cavity inside, an upper grate (3) is fixedly installed inside the combustion cavity, a lower grate (4) is fixedly installed below the upper grate (3), the outer ring of the lower grate (4) and located inside the furnace body (1) is wrapped with a second combustion chamber (7), the outer ring of the upper grate (3) and located inside the furnace body (1) is wrapped with a third combustion chamber (9), the second combustion chamber (7) is filled with heat storage honeycomb steel balls (8), the third combustion chamber (9) is filled with porous groove heat storage ceramic balls (10), the cavity above the upper grate (3) forms an upper combustion chamber (2), the cavity above the lower grate (4) forms a lower combustion chamber (12), a smoke extraction pipe (5) is fixedly connected to the outer wall of one side of the upper combustion chamber (2), the tail end of the smoke extraction pipe (5) is fixedly connected to the input port of the smoke extraction pump (6), and the output port of the smoke extraction pump (6) is communicated with the second combustion chamber (7) through a pipeline.

2. A fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: The second combustion chamber (7) and the third combustion chamber (9) are designed as interconnected structures.

3. A fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: A hydraulic pushing device (13) is fixedly installed on the back of the upper combustion chamber (2) and outside the furnace body (1), and the hydraulic pushing device (13) is composed of a hydraulic drive cylinder and a pushing plate.

4. A fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: A magnetizer (14) is fixedly mounted on an outer wall of one side of the furnace body (1), and a magnetizing pipe (15) is fixedly connected to the output end of the magnetizer (14), and the magnetizing pipe (15) is laid in the secondary combustion chamber (7) at the bottom end of the furnace body (1).

5. A fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: A feed port (16) is fixedly mounted on an outer wall at one side of the bottom end of the furnace body (1).

6. A fully-combustion double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: The specification of the heat storage honeycomb steel wire ball (8) is a heat storage honeycomb steel wire ball (8) of Φ100 mm.

7. A fully-combustion double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: The specification of the porous groove heat storage ceramic ball (10) is a Φ35mm heat storage ceramic ball.

8. The fully-combusted double-grate reverse draft multi-fuel pyrolysis furnace according to claim 1, characterized in that: An exhaust port (11) is fixedly mounted on the outside of one side of the three-combustion chamber (9).

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