Biomass gasification furnace

Abstract

The utility model discloses a biomass gasification furnace, and relates to the technical field of biomass gasification furnaces. A biomass gasification furnace comprises a shell and a support fixed to the bottom of the shell. The device further comprises an inner-layer shell, a material supporting plate and a material blowing mechanism. The inner-layer shell is arranged in the shell in a sleeving manner; a feeding hole is formed in the top of the inner-layer shell, an air outlet is formed in one side of the inner-layer shell, and a slag discharging hole is formed in the bottom of the inner-layer shell; the feeding hole, the gas outlet and the slag discharge hole all extend to the outside of the shell; wherein the side wall of the inner-layer shell is provided with a gas channel communicated with the shell, and the bottom of the inner-layer shell is of an open structure; the retainer plate is positioned in the shell and is fixed below the opening structure at the bottom of the inner-layer shell; and a plurality of slag falling holes are formed in the retainer plate. According to the biomass gasification furnace, the problem that biomass materials are burnt out and overhead can be solved, the combustion efficiency of fuel is improved, and the consumption of manpower resources by the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass gasifiers, and particularly relates to a biomass gasifier. Background Art

[0002] A biomass gasifier is a device that converts biomass materials (such as straw, wood waste, etc.) into combustible gas. The working principle of the biomass gasifier is to heat the biomass material to cause a pyrolysis reaction, generating gaseous fuel, liquid, and solid residues; among them, the gaseous fuel is a green energy source, which has great potential for promotion because its raw materials are renewable and have little impact on the environment.

[0003] Currently, during the use of biomass gasifiers, problems such as the burning out and emptying of biomass materials often occur, which will affect the combustion efficiency and safety; therefore, during the use of biomass gasifiers, it is necessary to manually poke and compact the materials regularly, which not only consumes human resources but also has low combustion efficiency.

[0004] In response to this, the inventor believes that how to design a biomass gasifier that can solve the problem of the burning out and emptying of biomass materials is a technical problem that needs to be solved in the current technical field of biomass gasifiers.

[0005] The information disclosed in this background art section is only intended to enhance the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] In view of the above technical problems, an embodiment of the utility model provides a biomass gasifier to solve the problems raised in the above background art.

[0007] The utility model provides the following technical solutions:

[0008] A biomass gasifier includes: a housing, and a bracket fixed to the bottom of the housing; it further includes an inner housing, a material supporting plate, and a material blowing mechanism;

[0009] The inner housing is sleeved inside the housing; an inlet is provided at the top of the inner housing, an air outlet is provided on one side of the inner housing, and a slag discharge port is provided at the bottom of the inner housing; the inlet, the air outlet, and the slag discharge port all extend to the outside of the housing;

[0010] Among them, a gas passage communicating with the housing is provided on the side wall of the inner housing, and the bottom of the inner housing is of an open structure;

[0011] The material supporting plate is located inside the housing and is fixed below the open structure at the bottom of the inner housing; a plurality of slag dropping holes are provided on the material supporting plate;

[0012] The blowing mechanism includes a blowing air pipe and a main air inlet pipe; the blowing air pipe is vertically arranged in the open structure at the bottom of the inner layer housing and penetrates through the material supporting plate; the main air inlet pipe includes two, one ends of the two main air inlet pipes are respectively communicated with the blowing air pipe, and the other ends of the two main air inlet pipes extend to the outside of the housing.

[0013] Preferably, a plurality of blowing holes are circumferentially arranged at the bottom of the inner layer housing, an annular air duct plate covering the blowing holes circumferentially is arranged at the bottom of the inner layer housing, an auxiliary air inlet pipe is connected to the annular air duct plate, and the other end of the auxiliary air inlet pipe is communicated with the main air inlet pipe.

[0014] Preferably, the air inlet of the main air inlet pipe is used for introducing compressed gas.

[0015] Preferably, the bracket includes a plurality of legs, and the plurality of legs are arranged in a circular array and fixed circumferentially at the bottom of the housing.

[0016] The biomass gasification furnace provided by the embodiment of the present invention has the following beneficial effects: the present invention designs a biomass gasification furnace, which can solve the problem of the biomass material burning out and being suspended in the air, improve the combustion efficiency of the fuel, and reduce the consumption of human resources by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the first angle of the present invention;

[0018] Figure 2 is a schematic structural diagram of the second angle of the present invention;

[0019] Figure 3 is of the present invention Figure 2 a sectional view taken along the A-A direction in;

[0020] Figure 4 is a perspective view of the present invention;

[0021] Figure 5 is of the present invention Figure 3 a partial enlarged view of B in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0023] Refer to Figures 1 - 5 .

[0024] In view of the problems mentioned in the above background art, the embodiment of the present utility model provides a biomass gasification furnace to solve the above technical problems, and the technical solution is as follows:

[0025] A biomass gasification furnace includes: a housing 110 and a bracket 120 fixed to the bottom of the housing 110; it further includes an inner housing 140, a material supporting plate 150, and a material blowing mechanism.

[0026] The inner housing 140 is sleeved inside the housing 110; the inner housing 140 provides an internal reaction zone, and the inner chamber of the inner housing 140 serves as a combustion chamber for biomass materials.

[0027] The top of the inner housing 140 is provided with a feed inlet 131, one side of the inner housing 140 is provided with an air outlet 132, and the bottom of the inner housing 140 is provided with a slag discharge port 133; the feed inlet 131, the air outlet 132, and the slag discharge port 133 all extend to the outside of the housing 110.

[0028] Wherein, a gas passage 141 communicating with the housing 110 is provided on the side wall of the inner housing 140, and the bottom of the inner housing 140 is of an open structure; the gaseous fuel generated by the pyrolysis of biomass materials enters the interlayer between the housing 110 and the inner housing 140 through the gas passage 141 and is discharged from the air outlet 132 for collection or direct combustion use.

[0029] The material supporting plate 150 is located inside the housing 110 and is fixed below the open structure at the bottom of the inner housing 140; a plurality of slag dropping holes are provided on the material supporting plate 150; the material supporting plate 150 is used to support biomass materials, and the slag dropping holes on the material supporting plate 150 are used to discharge the solid residues after the pyrolysis reaction of biomass materials.

[0030] The material blowing mechanism includes a blowing pipe 161 and a main inlet pipe 162; the blowing pipe 161 is vertically arranged in the open structure at the bottom of the inner housing 140 and penetrates through the material supporting plate 150; the main inlet pipe 162 includes two, and one ends of the two main inlet pipes 162 are respectively communicated with the blowing pipe 161, and the other ends of the two main inlet pipes 162 extend to the outside of the housing 110.

[0031] The design principle of a biomass gasification furnace provided by the embodiment of the present utility model is as follows: during the pyrolysis reaction of biomass materials, compressed gas is intermittently introduced into the main inlet pipe 162, and the compressed gas is directly ejected from the blowing pipe 161 to blow and turn the biomass materials, thereby preventing the fuel from being air-raised or unevenly stacked; improving the combustion efficiency of the fuel and reducing the consumption of human resources by the device.

[0032] It should be noted that too much air may cause the furnace temperature to be unstable, thereby affecting the gasification process; the introduction amount of compressed air needs to be controlled to avoid damaging the cracking reaction inside the gasification furnace.

[0033] In this embodiment, a plurality of air blowing holes 171 are circumferentially arranged at the bottom of the inner shell 140. An annular air duct plate 172 that circumferentially covers the air blowing holes 171 is arranged at the bottom of the inner shell 140. An auxiliary air inlet pipe 173 is connected to the annular air duct plate 172, and the other end of the auxiliary air inlet pipe 173 communicates with the main air inlet pipe 162;

[0034] Furthermore, compressed air can enter the auxiliary air inlet pipe 173 from the main air inlet pipe 162, and then be blown into the combustion chamber of the inner shell 140 through the air blowing holes 171 to blow the fuel, further preventing the phenomenon of the fuel burning out and being suspended in the air.

[0035] In this embodiment, the air inlet 162-1 of the main air inlet pipe 162 is used to introduce compressed gas; the compressed gas is preferably nitrogen and carbon dioxide; nitrogen, as an inert gas, has low reactivity and is suitable for blowing the fuel to reduce interference with the combustion process; nitrogen does not participate in chemical reactions and thus will not have a negative impact on the cracking reaction; at the same time, carbon dioxide is also an inert gas that can provide a certain degree of air fluidity.

[0036] In this embodiment, the bracket 120 includes a plurality of legs, and the plurality of legs are arranged in a circular array and fixed to the circumferential direction of the bottom of the shell 110.

[0037] A biomass gasifier provided by an embodiment of the present utility model has the following beneficial effects: The present utility model designs a biomass gasifier, which can solve the problem of the biomass material burning out and being suspended in the air, improve the combustion efficiency of the fuel, and reduce the consumption of human resources by the device.

[0038] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units. They may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0039] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] It will be understood that those of ordinary skill in the art can make equivalent substitutions or changes according to the technical solution of the present utility model and the concept of the present utility model, and all such changes or substitutions should fall within the protection scope of the claims appended to the present utility model.

Claims

1. A biomass gasifier, comprising: The shell and the bracket fixed at the bottom of the shell; characterized in that it also includes an inner shell, a supporting plate, and a blowing mechanism; The inner shell is sleeved inside the shell; a feed port is arranged at the top of the inner shell, an air outlet is arranged at one side of the inner shell, and a slag discharge port is arranged at the bottom of the inner shell; the feed port, the air outlet and the slag discharge port all extend to the outside of the shell; The side wall of the inner shell is provided with a gas passage communicating with the shell, and the bottom of the inner shell is an open structure; The supporting plate is located inside the shell and fixed below the open structure at the bottom of the inner shell; a plurality of slag dropping holes are arranged on the supporting plate; The blowing mechanism includes an air blowing pipe and a main air inlet pipe; the air blowing pipe is vertically arranged in the open structure at the bottom of the inner shell and is arranged through the supporting plate; the main air inlet pipe includes two, one end of the two main air inlet pipes is respectively connected to the air blowing pipe, and the other end of the two main air inlet pipes extends to the outside of the shell.

2. The biomass gasification furnace according to claim 1, characterized in that: A plurality of blowing holes are circumferentially arranged at the bottom of the inner shell, and an annular airway plate circumferentially covering the blowing holes is arranged at the bottom of the inner shell. An auxiliary air intake pipe is connected to the annular airway plate, and the other end of the auxiliary air intake pipe is connected to the main air intake pipe.

3. The biomass gasification furnace according to claim 1, characterized in that: The air inlet of the main air inlet pipe is used for introducing compressed gas.

4. The biomass gasification furnace according to claim 1, characterized in that: The bracket includes a plurality of legs, and the plurality of legs are arranged in a circular array and fixed on the circumference of the bottom of the shell.

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