Biomass gasifier

Abstract

The invention discloses a biomass gasifier, comprising: a shell, a chamber is defined inside, a columnar body and a carbon storage chamber are arranged inside the chamber, two first mounting holes are respectively arranged on the shell and are connected to the chamber, a fluid input pipe and a fluid output pipe respectively pass through the corresponding first mounting holes and extend into the chamber, and a fluid input port is arranged at one end of the fluid input pipe; a furnace bridge, the furnace bridge is arranged in the chamber and is connected to the fluid input port; a carbon storage chamber, the carbon storage chamber is located on the side of the furnace bridge facing away from the fluid input port so that the gas flows into the carbon storage chamber after passing through the fluid input pipe and the furnace bridge, a receiving chamber for receiving adsorbed carbon is defined inside the carbon storage chamber, and the receiving chamber is connected to the other end of the fluid input pipe; a fluid output pipe, the fluid output pipe is connected to the receiving chamber to guide the fluid in the receiving chamber out. The biomass gasifier has a simple structure, can prevent the generation of tar in the production process, and improve the cleanliness of the fuel gas.

Description

Technical Field

[0001] The invention belongs to the technical field of gasifiers, and in particular relates to a biomass gasifier. Background Art

[0002] The existing biomass gasifiers with fixed beds are divided into upper gas type, lower gas type and middle exhaust type. The lower exhaust method is recognized as the method with the least impurities in the clean gas, but it is easy to coke and cannot be scaled up, so it can only be 1-2 meters. The cleanliness of the gas produced by the biomass gasifier determines whether it can be used for the next level in the subsequent process. If the pipeline is not clean, it will be blocked in a very short time. In general, in the lower exhaust biomass gasifier, the gas flows downward in a concentrated manner and flows downward from the middle channel. A throat is set in the middle position, which leads to concentrated flames and high temperatures, which is easy to coke and affects the cleanliness of the fuel gas. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, the present invention provides a biomass gasification furnace, which can prevent the generation of tar during the production process, improve the cleanliness of the fuel gas, and has the advantages of simple structure and easy use.

[0005] According to an embodiment of the present invention, the biomass gasifier comprises: a shell, wherein the shell defines a chamber, wherein the columnar body and the carbon storage chamber are arranged in the chamber, wherein the shell is respectively provided with two first mounting holes connected to the chamber, wherein the fluid input pipe and the fluid output pipe respectively extend into the chamber through the corresponding first mounting holes, and a fluid input port is arranged at one end of the fluid input pipe; a furnace bridge, wherein the furnace bridge is arranged in the chamber and connected to the fluid input port; a carbon storage chamber, wherein the carbon storage chamber is located on the side of the furnace bridge facing away from the fluid input port so that the gas flows into the carbon storage chamber after passing through the fluid input pipe and the furnace bridge, wherein a accommodating chamber for accommodating adsorbed carbon is defined in the carbon storage chamber, and the accommodating chamber is connected to the other end of the fluid input pipe; and a fluid output pipe, wherein the fluid output pipe is connected to the accommodating chamber so as to discharge the fluid in the accommodating chamber.

[0006] The biomass gasification furnace according to the embodiment of the present invention adopts a structure combining a furnace bridge, a carbon storage chamber and a fluid output pipe. By adding a carbon storage chamber, a carbon layer can be accumulated to prevent air from entering the furnace bridge after it is burned out and producing tar, thereby improving the cleanliness of the fuel gas.

[0007] According to one embodiment of the present invention, the furnace bridge includes: a fluid input pipe, a fluid channel extending along the axial direction of the fluid input pipe is defined in the fluid input pipe, the fluid input port is connected with the fluid channel, and a plurality of through holes penetrating along the thickness direction of the fluid input pipe and connected with the fluid channel are provided on the outer wall surface of the fluid input pipe; a columnar body, the columnar body is concentrically arranged with the fluid input pipe, the columnar body includes a plurality of layers of columnar body units, the plurality of layers of columnar body units are distributed at intervals along the axial direction of the fluid input pipe, each layer of the columnar body units defines a receiving cavity open in the direction opposite to one end of the fluid input pipe, the receiving cavity is connected with at least one of the through holes, one end of one of the two adjacent layers of the columnar body units is inserted into the receiving cavity of the other columnar body unit through the open end and a gap connected with the receiving cavity is left between the inner wall surface of the other columnar body unit, and the other columnar body unit is located on the side of the one columnar body unit adjacent to the position of the fluid input port.

[0008] According to an embodiment of the present invention, the cross section of the columnar unit along the plane where the axis of the fluid input pipe is located is formed into a trapezoid, and the trapezoid is provided with an upper base and a lower base sequentially distributed along the flow direction of the fluid.

[0009] According to an embodiment of the present invention, the cross section of the cylindrical unit along a plane perpendicular to the plane where the axis of the fluid input pipe is located is formed into a circle.

[0010] According to an embodiment of the present invention, the cross section of the columnar unit along a plane perpendicular to the plane where the axis of the fluid input pipe is located is formed into a polygon.

[0011] According to one embodiment of the present invention, the inner diameter of the carbon storage chamber is not less than the maximum radial dimension of the cylindrical body.

[0012] According to one embodiment of the present invention, multiple layers of the columnar body units are coaxially arranged.

[0013] According to one embodiment of the present invention, the biomass gasifier further includes: a shell, a chamber is defined in the shell, the columnar body and the carbon storage chamber are arranged in the chamber, two first mounting holes connected to the chamber are respectively provided on the shell, and the fluid input pipe and the fluid output pipe respectively extend into the chamber through the corresponding first mounting holes.

[0014] According to an embodiment of the present invention, the edge of the accommodating cavity on the side facing away from the location of the cylindrical body is formed into a sawtooth shape distributed along its circumference.

[0015] According to one embodiment of the present invention, the multi-layer columnar body unit includes a first layer of columnar body units to an Nth layer of columnar body units arranged along the fluid flow direction, the Nth layer of columnar body units is provided with a plate-shaped member on the side facing away from the carbon storage chamber, the plate-shaped member is provided with a second mounting hole that passes through the plate-shaped member along the thickness direction thereof, and the other end of the fluid output pipe is arranged at the second mounting hole.

[0016] According to one embodiment of the present invention, the radial dimension of the fluid output pipe is not greater than the radial dimension of the end of the first layer of columnar body units facing away from the carbon storage chamber.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a cross-sectional view of a biomass gasifier according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] Biomass gasifier 100;

[0022] Furnace bridge 10; fluid inlet pipe 11; cylindrical body 12; through hole 13;

[0023] Carbon storage chamber 20;

[0024] Fluid output pipe 30;

[0025] Housing 40. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions 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. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "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 or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0029] The biomass gasifier 100 according to the present invention will be described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, the biomass gasifier 100 according to the embodiment of the present invention includes: a shell 40 , a furnace bridge 10 , a carbon storage chamber 20 and a fluid output pipe 30 .

[0031] Specifically, a chamber is defined in the shell 40, and a furnace bridge 10 and a carbon storage chamber 20 are arranged in the chamber. Two first mounting holes communicating with the chamber are respectively arranged on the shell 40, and the fluid input pipe 11 and the fluid output pipe 30 extend into the chamber through the corresponding first mounting holes respectively. A fluid input port is arranged at one end of the fluid input pipe 11, so that gas can be input from the fluid input pipe 11 and discharged from the fluid output pipe 30. The furnace bridge 10 is arranged in the chamber and communicated with the fluid input port. The carbon storage chamber 20 is located on the side of the furnace bridge 10 facing away from the location of the fluid input port so that the gas can flow into the carbon storage chamber 20 after passing through the fluid input pipe 11 and the furnace bridge 10. A receiving chamber for receiving adsorbed carbon is defined in the carbon storage chamber 20, and the receiving chamber is communicated with the other end of the fluid input pipe 30. The fluid output pipe 30 is communicated with the receiving chamber to discharge the fluid in the receiving chamber.

[0032] In other words, the biomass gasification furnace 100 according to the embodiment of the present invention is mainly composed of a shell 40, a furnace bridge 10, a carbon storage chamber 20 and a fluid output pipe 30. A chamber is defined in the shell 40, and the furnace bridge 10 and the carbon storage chamber 20 are installed in the chamber. A fluid input pipe 11 and a fluid output pipe 30 are also provided on the shell 40, respectively. The gas can flow into the furnace bridge 10 through the fluid input pipe 11, and the gas flows to the carbon storage chamber 20 after passing through the furnace bridge 10. Adsorbed carbon is placed in the carbon storage chamber 20, and the gas after passing through the furnace bridge 10 can be filtered by the adsorbed carbon, thereby improving the cleanliness of the gas.

[0033] Therefore, the biomass gasification furnace 100 according to the embodiment of the present invention adopts a structure that combines a shell 40, a furnace bridge 10, a carbon storage chamber 20 and a fluid output pipe 30. By adding the carbon storage chamber 20, a carbon layer can be accumulated to prevent air from entering the furnace bridge 10 after it is burned out and producing tar, thereby improving the cleanliness of the fuel gas.

[0034] According to one embodiment of the present invention, the furnace bridge 10 includes a fluid input pipe 11 and a columnar body 12, wherein a fluid channel extending along the axial direction of the fluid input pipe 30 is defined in the fluid input pipe 30, a fluid input port connected to the fluid channel is provided at one end of the fluid input pipe 30, a plurality of through holes 13 penetrating along the thickness direction and connected to the fluid channel are provided on the outer wall surface of the fluid input pipe 11, the columnar body 12 is concentrically arranged with the fluid input pipe 11, the columnar body 12 includes a plurality of cylindrical body units, the plurality of cylindrical body units are spaced apart and distributed along the axial direction of the fluid input pipe, each layer of the cylindrical body units defines a receiving cavity open in the direction opposite to the end of the fluid input pipe 11, the receiving cavity is connected to at least one through hole 13, one end of one of the two adjacent layers of cylindrical body units is inserted into the receiving cavity of the other cylindrical body unit through the open end and a gap connected to the receiving cavity is left between the inner wall surface, and the other cylindrical body unit is located on the side of a cylindrical body unit adjacent to the position of the fluid input port. That is to say, the furnace bridge 10 may include a fluid input pipe 11 and a columnar member 12, the fluid input pipe 30 is provided with a fluid channel running through it along its axial direction, the upper end of the fluid input pipe 30 is formed as a fluid input port, the outer wall surface of the fluid input pipe 11 is provided with a plurality of through holes 13 connected to the fluid channel, the columnar body 12 is coaxially arranged with the fluid input pipe 11, the columnar body 12 may include a plurality of layers of columnar body units, and the plurality of layers of columnar body units may be spaced apart along the axial direction of the fluid input pipe 11 and connected in sequence from top to bottom.

[0035] Among them, a receiving cavity connected to one or more through holes can be formed in each layer of columnar units. Between two adjacent columnar units, the upper end of the columnar unit located in the lower layer can be inserted into the receiving cavity of the columnar unit located in the upper layer and is separated from the inner wall surface of the columnar unit in the upper layer to define a gap connected to the receiving cavity. The gas in the receiving cavity of the columnar unit in the upper layer can flow out through the gap. The carbon storage chamber 20 is located below the columnar body 12 and is connected to the columnar unit in the lowest layer. The carbon storage chamber 20 defines a receiving cavity for storing an adsorbed carbon layer. The gas can be filtered through the adsorbed carbon layer to improve the cleanliness of the gas. The receiving cavity can be connected to the lower end of the fluid input pipe 11, and the upper end of the fluid output pipe 30 is connected to the receiving cavity to discharge the fluid in the receiving cavity through the other end of the fluid output pipe 30.

[0036] In other words, the furnace bridge 10 may include a fluid input pipe 11 and a columnar member 12, wherein a fluid channel is provided in the fluid input pipe 11 and is connected to the fluid input port, and a plurality of through holes 13 connected to the fluid channel are provided on the outer wall surface of the fluid input pipe 11, and the through holes 13 are connected along the wall thickness direction of the fluid input pipe 30. The columnar body 12 is coaxially arranged with the fluid input pipe 11, and the columnar body 12 may include a plurality of columnar body units, and the plurality of columnar body units may be spaced apart along the axial direction of the fluid input pipe 11 and connected in sequence from top to bottom.

[0037] Among them, a receiving cavity connected to one or more through holes may be formed in each layer of columnar body units. Between two adjacent columnar body units, the upper end of the columnar body unit located in the lower layer may be inserted into the receiving cavity of the columnar body unit located in the upper layer and is separated from the inner wall surface of the columnar body unit in the upper layer to define a gap connected to the receiving cavity. The gas in the receiving cavity of the columnar body unit in the upper layer may flow out through the gap. The carbon storage chamber 20 is located below the columnar body 12 and is connected to the columnar body unit in the lowest layer. The receiving cavity may be connected to the lower end of the fluid input pipe 11, and the upper end of the fluid output pipe 30 is connected to the receiving cavity to discharge the fluid in the receiving cavity through the other end of the fluid output pipe 30.

[0038] It should be noted that by designing the furnace bridge 10 into a multi-layer columnar unit structure, the resistance of the furnace bridge 10 during rotation can be reduced.

[0039] According to one embodiment of the present invention, the cross-section of the columnar unit along the plane where the axis of the fluid input pipe 11 is located is formed into a trapezoid, and the trapezoid is provided with an upper base and a lower base distributed in sequence along the flow direction of the fluid, so that the furnace bridge 10 can be formed into a tower structure, which is conducive to the discharge of gas from the fluid output pipe 30 below the furnace bridge 10.

[0040] Preferably, the cross section of the columnar unit along a plane perpendicular to the plane where the axis of the fluid input pipe 30 is located is formed into a circle, which can minimize the resistance when the furnace bridge 10 rotates.

[0041] Optionally, the cross section of the columnar unit along a plane perpendicular to the plane where the axis of the fluid input pipe 30 is located is formed into a polygon, usually designed to be a hexagon or above, which can greatly reduce the resistance of the furnace bridge 10 when rotating.

[0042] According to one embodiment of the present invention, the inner diameter of the carbon storage chamber 20 is not less than the maximum radial dimension of the cylindrical body 12. The inner diameter of the carbon storage chamber 20 may be equal to or greater than the maximum radial dimension of the cylindrical body 12, thereby increasing the cross-sectional area of ​​the carbon storage chamber and improving the flow rate and cleanliness of the fuel gas.

[0043] Optionally, multiple layers of columnar units are coaxially arranged to facilitate installation of the furnace bridge 10 and the fluid input pipe 11 .

[0044] According to one embodiment of the present invention, the edge of the accommodating cavity on the side facing away from the cylindrical body 12 is formed into a serrated shape distributed along its circumference, which can reduce the content of the powder layer in the fuel gas, thereby purifying the fuel gas and improving the cleanliness of the fuel gas.

[0045] Optionally, the multi-layer columnar body unit includes a first layer of columnar body units to an Nth layer of columnar body units arranged along the fluid flow direction, and the Nth layer of columnar body units is provided with a plate-shaped member on the side facing away from the carbon storage chamber 20, and the plate-shaped member is provided with a second mounting hole passing through the plate-shaped member along the thickness direction thereof, and the other end of the fluid output pipe 30 is arranged at the second mounting hole.

[0046] Preferably, the radial dimension of the fluid output pipe 30 is not greater than the radial dimension of the end of the first layer columnar unit facing away from the carbon storage chamber 20 , so that one end of the fluid output pipe 30 can extend into the carbon storage chamber 20 and the gas can be discharged from the fluid output pipe 30 .

[0047] In summary, the biomass gasification furnace 100 according to the embodiment of the present invention adopts a structure that combines a furnace bridge 10, a carbon storage chamber 20 and a fluid output pipe 30. By designing the furnace bridge 10 as a multi-layer columnar unit structure, the resistance of the furnace bridge 10 during rotation can be reduced. By adding the carbon storage chamber 20, a carbon layer can be accumulated to prevent air from entering the furnace bridge 10 after it is burned out and producing tar, thereby improving the cleanliness of the fuel gas.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A biomass gasifier, characterized in that: include: A fluid input pipe, wherein a fluid channel extending along its axial direction is defined in the fluid input pipe, a fluid input port is provided at one end of the fluid input pipe, the fluid input port is communicated with the fluid channel, and a plurality of through holes are provided on the outer wall surface of the fluid input pipe, which penetrate along the thickness direction of the fluid input pipe and are communicated with the fluid channel; A shell, wherein a chamber is provided in the shell, a columnar body and a carbon storage chamber are provided in the chamber, and two first mounting holes communicating with the chamber are respectively provided on the shell, and the fluid input pipe and the fluid output pipe respectively extend into the chamber through the corresponding first mounting holes; A furnace bridge, the furnace bridge is disposed in the chamber and communicated with the fluid input port; A carbon storage chamber, the carbon storage chamber is located on the side of the furnace bridge facing away from the location of the fluid input port so that the gas flows into the carbon storage chamber after passing through the fluid input pipe and the furnace bridge, and the carbon storage chamber defines a receiving cavity for receiving adsorbed carbon, and the receiving cavity is connected to the other end of the fluid input pipe; a fluid output pipe, the fluid output pipe being in communication with the accommodating chamber to discharge the fluid in the accommodating chamber; A cylindrical body, the cylindrical body is arranged concentrically with the fluid input pipe, the cylindrical body comprises a plurality of cylindrical body units, the plurality of cylindrical body units are spaced apart and distributed along the axial direction of the fluid input pipe, each layer of the cylindrical body units defines a receiving cavity open in a direction opposite to one end of the fluid input pipe, the receiving cavity is communicated with at least one through hole, one end of one cylindrical body unit in two adjacent layers of the cylindrical body units passes through the open end and is plugged into the receiving cavity of another cylindrical body unit, and a gap communicating with the receiving cavity is left between the inner wall surface of the cylindrical body unit and the other cylindrical body unit is located on the side of the one cylindrical body unit adjacent to the location of the fluid input port; The edge of the accommodating cavity on the side facing away from the location of the cylindrical body is formed into a sawtooth shape distributed along its circumference; The multi-layer columnar body unit includes a first layer of columnar body units to an Nth layer of columnar body units arranged along the fluid flow direction, and the Nth layer of columnar body units is provided with a plate-shaped member on the side facing away from the carbon storage chamber, and the plate-shaped member is provided with a second mounting hole that passes through the plate-shaped member along its thickness direction, and the other end of the fluid output pipe is arranged at the second mounting hole.

2. The biomass gasifier according to claim 1, characterized in that: The cross section of the columnar unit along the plane where the axis of the fluid input pipe is located is formed into a trapezoid, and the trapezoid is provided with an upper base and a lower base distributed in sequence along the flow direction of the fluid.

3. The biomass gasifier according to claim 2, characterized in that: The cross section of the cylindrical body unit along a plane perpendicular to the plane where the axis of the fluid input pipe is located is formed into a circle.

4. The biomass gasifier according to claim 1, characterized in that: The cross section of the cylindrical body unit along a plane perpendicular to the plane where the axis of the fluid input pipe is located is formed into a polygon.

5. The biomass gasifier according to claim 1, characterized in that: The inner diameter of the carbon storage chamber is not less than the maximum radial dimension of the cylindrical body.

6. The biomass gasifier according to claim 1, characterized in that: Multiple layers of the columnar body units are coaxially arranged.

7. The biomass gasifier according to claim 1, characterized in that: The radial dimension of the fluid output pipe is not greater than the radial dimension of the end of the first layer columnar unit facing away from the carbon storage chamber.

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