Biomass gas generation system

Abstract

The utility model discloses a biomass gas generating system which comprises a barrel body, the barrel body is vertically arranged, the interior of the barrel body is of a hollow structure and forms a pyrolysis chamber, a biomass fuel input pipe communicated with the pyrolysis chamber is arranged on one side of the outer bottom of the barrel body, and a water vapor input pipe is arranged on the side, opposite to the biomass fuel input pipe, outside the barrel body. The water vapor input pipe is communicated with a plurality of branch conveying pipes arranged in the side wall of the barrel body, the branch conveying pipes are rotationally and symmetrically distributed, the branch conveying pipes penetrate through the inner side wall of the barrel body at an inclined angle, and the branch conveying pipes are communicated with the pyrolysis chamber. Biomass combustion powder is tangentially conveyed to the pyrolysis chamber by the biomass fuel input pipe, water vapor is guided by the guide short groove after being sprayed out from the branch conveying pipe, so that the water vapor correspondingly spirally ascends along the trend of the guide short groove, and the biomass powder accumulated at the bottom of the pyrolysis chamber is continuously driven to ascend by matching with the guide long groove; the water vapor is fully mixed with combustion reactants, so that the completeness of gasification reaction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass gas, in particular to a biomass gas generating system. Background Art

[0002] The Chinese patent published by announcement number: CN102367393B is specifically a biomass water-cooled air-steam gasifier. The wall of the insulation layer is provided with a feed port, which is connected to the combustion chamber and the side wall of the feed port is tangent to the wall of the insulation layer. Under the action of wind, biomass powder is tangentially input into the combustion chamber. The insulation layer is also provided with at least one through hole, which is connected to the combustion chamber. Water vapor is input into the combustion chamber from the through hole and mixed with the biomass powder to participate in combustion pyrolysis and gasification reaction to produce biomass gas. Based on air as a gasifying agent, a water vapor pipeline is set in the gasifier, and water vapor is introduced as a gasifying agent to participate in the gasification reaction, so that the biomass fuel is pyrolyzed, burned and gasified to obtain biomass gas with medium calorific value, and the calorific value and gas output rate are effectively improved.

[0003] However, the pipeline for conveying water vapor in the patent is connected to the through hole for entering the combustion chamber in a straight line, which cannot cooperate with or even interferes with the vortex motion formed by the biomass powder in the combustion chamber, thereby hindering the gasification reaction of the biomass fuel and water vapor, so that the biomass fuel cannot be fully pyrolyzed, burned and gasified to obtain high calorific value biomass gas. To this end, we propose a biomass gas generation system. Utility Model Content

[0004] The utility model aims to provide a biomass gas generation system, in which a water vapor conveying pipeline cooperates with a short guide groove and a long guide groove to generate spiral ascending gas in a pyrolysis chamber, which continuously drives the biomass powder at the bottom of the barrel to rise, and is fully mixed with the water vapor gas to generate a gasification reaction and finally form biomass gas, thereby solving the problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A biomass gas generation system comprises a barrel body, which is arranged vertically. The interior of the barrel body is a hollow structure and forms a pyrolysis chamber. A biomass fuel input pipe connected to the pyrolysis chamber is provided on one side of the outer bottom of the barrel body, and a water vapor input pipe is provided on the side of the barrel body opposite to the biomass fuel input pipe. The water vapor input pipe is connected to a plurality of branch pipes arranged in the side wall of the barrel body. The branch pipes are rotationally symmetrically distributed, penetrate the inner wall of the barrel body at an inclined angle, and are connected to the pyrolysis chamber.

[0007] Preferably, an annular tube is buried in the side wall of the barrel body near the bottom, one side of the annular tube is connected to the water vapor input pipe, and the top of the annular tube is connected to no less than four branch pipes, the axes of the branch pipes are all at an angle less than 50° with the horizontal plane, and the angle of inclination of the branch pipes to the barrel body axis is greater than 10°.

[0008] Preferably, a short diversion groove corresponding to the distribution pipe is provided on the inner side wall of the barrel body, and the bottom of the short diversion groove is connected to the output port of the distribution pipe.

[0009] Preferably, long guide grooves are provided between the short guide grooves.

[0010] Preferably, the short guide groove and the long guide groove are in a spiral ascending direction.

[0011] Preferably, the depth of the short guide grooves decreases from deep to shallow from bottom to top.

[0012] Preferably, a dredging opening is provided on the bottom surface of the barrel body, a barrel bottom cover is hinged on the dredging opening, and a gas exhaust pipe is provided at the center of the top surface of the barrel body.

[0013] Preferably, the bottom of the barrel is fixed on the ground by a mounting frame.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model discloses a biomass fuel input pipe which tangentially transports biological combustion powder to the pyrolysis chamber, a water vapor input pipe which transports air containing water vapor which first enters the annular pipe, is transported to each water vapor input pipe through the annular pipe, and finally enters the pyrolysis chamber to participate in the gasification reaction, after the water vapor is ejected from the distribution pipe, the guide short groove guides it, so that the water vapor gas produces a spiral upward motion along the direction of the guide short groove, cooperates with the guide long groove to continuously drive the biomass powder accumulated at the bottom of the pyrolysis chamber to rise, so that the water vapor and the combustion reactants are fully mixed, and the completeness of the gasification reaction is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the axonometric drawing of the overall structure of the utility model;

[0017] Figure 2 It is a partial structural axonometric drawing of the utility model;

[0018] Figure 3 It is a partial structural plan view of the utility model;

[0019] Figure 4 It is a partial structural top view of the utility model;

[0020] Figure 5 This is a cross-sectional view of the internal structure of the barrel of the utility model;

[0021] In the figure: 1. barrel body; 2. pyrolysis chamber; 3. biomass fuel input pipe; 4. water vapor input pipe; 5. distribution pipe; 6. ring pipe; 7. short diversion groove; 8. long diversion groove; 9. barrel bottom cover; 10. mounting frame; 11. gas exhaust pipe. DETAILED DESCRIPTION

[0022] 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.

[0023] In order to solve the problem in the prior art that water vapor cannot match the spiral motion process of biomass powder and the two cannot be fully mixed, the following technical solution is provided. Please refer to Figure 1-5 ;

[0024] A biomass gas generation system includes a barrel body 1, which is arranged vertically. The interior of the barrel body 1 is a hollow structure and forms a pyrolysis chamber 2. Biomass combustion powder is gasified in the pyrolysis chamber 2 to form biomass gas. A biomass fuel input pipe 3 connected to the pyrolysis chamber 2 is provided on one side of the outer bottom of the barrel body 1. The biomass combustion powder is tangentially transported to the pyrolysis chamber 2 through the biomass fuel input pipe 3. A water vapor input pipe 4 is provided on the side of the barrel body 1 opposite to the biomass fuel input pipe 3. The water vapor input pipe 4 is connected to a plurality of branch pipes 5 arranged in the side wall of the barrel body 1. The branch pipes 5 are rotationally symmetrically distributed. The branch pipes 5 penetrate the inner wall of the barrel body 1 at an inclined angle, and the branch pipes 5 are connected to the pyrolysis chamber 2.

[0025] An annular tube 6 is buried in the side wall of the barrel body 1 near the bottom, one side of the annular tube 6 is connected to the water vapor input pipe 4, and the top of the annular tube 6 is connected to no less than four branch pipes 5. The air containing water vapor transported by the water vapor input pipe 4 first enters the annular tube 6, is transported to each water vapor input pipe 4 through the annular tube 6, and finally enters the pyrolysis chamber 2 to participate in the gasification reaction.

[0026] The axis of the branch pipe 5 is at an angle less than 50° to the horizontal plane, and the angle of inclination of the branch pipe 5 to the axis of the barrel body 1 is greater than 10°. A short guide groove 7 corresponding to the branch pipe 5 is provided on the inner wall of the barrel body 1, and the bottom of the short guide groove 7 is connected with the output port of the branch pipe 5. The depth of the short guide groove 7 is from deep to shallow from bottom to top. A long guide groove 8 is provided between the short guide grooves 7. The short guide grooves 7 and the long guide grooves 8 are in a spiral ascending direction. After the water vapor is ejected from the branch pipe 5, the short guide groove 7 guides it, so that the water vapor gas produces a spiral ascending motion along the direction of the short guide groove 7, continuously driving the biomass powder accumulated at the bottom of the pyrolysis chamber 2 to rise, so that the water vapor and the combustion reactants are fully mixed, and the completeness of the gasification reaction is improved. The long guide groove 8 can also guide the gas in the pyrolysis chamber 2 so that the combustion reactants are continuously spiraled and fully reacted in the process from the bottom to the top of the barrel body 1, and finally form biomass gas.

[0027] A dredging port is provided on the bottom surface of the barrel body 1, and a barrel bottom cover 9 is hinged on the dredging port. The staff can open the barrel bottom cover 9 to clean the inside of the barrel body 1. A gas exhaust pipe 11 is provided at the center of the top surface of the barrel body 1, and the biomass fuel gas generated by the gasification reaction leaves the pyrolysis chamber 2 through the gas exhaust pipe 11.

[0028] The bottom of the barrel body 1 is fixed on the ground through a mounting frame 10 .

[0029] Working principle: The biomass fuel input pipe 3 transports biological combustion powder tangentially to the pyrolysis chamber 2, and the water vapor input pipe 4 transports air containing water vapor to the annular pipe 6 first, and then transports it to each water vapor input pipe 4 through the annular pipe 6, and finally enters the pyrolysis chamber 2 to participate in the gasification reaction. After the water vapor is ejected from the distribution pipe 5, the guide short groove 7 guides it, so that the water vapor gas produces a spiral upward motion along the guide short groove 7, and cooperates with the guide long groove 8 to continuously drive the biomass powder accumulated at the bottom of the pyrolysis chamber 2 to rise, so that the water vapor and the combustion reactants are fully mixed, thereby improving the completeness of the gasification reaction.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although 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 appended claims and their equivalents.

Claims

1. A biomass gas generation system, comprising a barrel (1), characterized in that: The barrel body (1) is arranged vertically, and the interior of the barrel body (1) is a hollow structure and forms a pyrolysis chamber (2). A biomass fuel input pipe (3) connected to the pyrolysis chamber (2) is provided on one side of the outer bottom of the barrel body (1), and a water vapor input pipe (4) is provided on the side of the barrel body (1) opposite to the biomass fuel input pipe (3). The water vapor input pipe (4) is connected to a plurality of branch pipes (5) arranged in the side wall of the barrel body (1), and the branch pipes (5) are distributed in a rotationally symmetrical manner. The branch pipes (5) penetrate the inner side wall of the barrel body (1) at an inclined angle, and the branch pipes (5) are connected to the pyrolysis chamber (2).

2. A biomass gas generation system according to claim 1, characterized in that: An annular tube (6) is buried in the side wall of the barrel body (1) near the bottom, one side of the annular tube (6) is connected to the water vapor input pipe (4), and the top of the annular tube (6) is connected to no less than four branch pipes (5), the axes of the branch pipes (5) are all at an angle of less than 50° with the horizontal plane, and the angle of inclination of the branch pipes (5) to the axis of the barrel body (1) is greater than 10°.

3. A biomass gas generation system according to claim 2, characterized in that: A short diversion groove (7) corresponding to the distribution pipe (5) is provided on the inner side wall of the barrel body (1), and the bottom of the short diversion groove (7) is connected to the output port of the distribution pipe (5).

4. A biomass gas generation system according to claim 3, characterized in that: A long flow guiding groove (8) is provided between the short flow guiding grooves (7).

5. A biomass gas generation system according to claim 4, characterized in that: The short guide groove (7) and the long guide groove (8) are spirally ascending.

6. A biomass gas generation system according to claim 5, characterized in that: The depth of the short diversion groove (7) decreases from deep to shallow from bottom to top.

7. A biomass gas generation system according to claim 6, characterized in that: The bottom surface of the barrel body (1) is provided with a dredging opening, a barrel bottom cover (9) is hingedly connected to the dredging opening, and a gas discharge pipe (11) is provided at the center of the top surface of the barrel body (1).

8. A biomass gas generation system according to claim 7, characterized in that: The bottom of the barrel body (1) is fixed on the ground via a mounting frame (10).

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