Double-chamber biomass pyrolysis gasification furnace with temperature-sensitive progressive increase structure

Abstract

The utility model discloses a double-chamber biomass pyrolysis gasification furnace with a temperature-sensitive progressive increase structure, which relates to the technical field of gasification furnaces and comprises a shell and an isolation plate, the isolation plate is fixedly connected to the inside of the shell, and the inside of the shell is divided into independent spaces by the isolation plate; according to the double-chamber biomass pyrolysis gasification furnace with the temperature-sensitive progressive increase structure, the gasification furnace structure is arranged, when biomass raw materials pass through the bottom of the pyrolysis chamber, the radius of the biomass raw materials can be reduced in the downward moving process, so that the center of the biomass raw materials is closer to a secondary heating wire, and the temperature-sensitive progressive increase structure is formed; the biomass raw material enters the gasification chamber through the communication port, the central temperature of the biomass raw material is gradually increased when the biomass raw material moves downwards, the central temperature of the biomass raw material is gradually increased after the gasification chamber moves to the bottom, and the heat value of biomass can be more effectively utilized by performing an increasing heating mode on the biomass raw material.

Description

Technical Field

[0001] The utility model relates to the technical field of gasifiers, in particular to a double-chamber biomass pyrolysis gasifier provided with a temperature-sensing progressive structure. Background Art

[0002] Biomass pyrolysis and gasification is the incomplete combustion of agricultural and forestry wastes, which transforms agricultural and forestry wastes into clean energy. The generated synthesis gas can replace fossil fuels such as natural gas and realize the supply of gas, heat and electricity.

[0003] For example, a dual-chamber biomass pyrolysis gasification furnace with publication number CN218465752U includes a furnace body; a discharge assembly, and the discharge assembly is arranged at the bottom of the furnace body; wherein the furnace body is divided into a pyrolysis gasification chamber and a burnout chamber by a partition inside the furnace body; the discharge assembly includes a grate arranged at the bottom of the furnace body and a push baffle plate arranged on the grate; both side covers of the grate are provided with sealing covers connected to the furnace body; the length of the sealing cover is greater than or equal to the spacing between the push baffle plates; the spacing between the sealing cover and the grate is the same as the height of the push baffle plate, and the method of using the pyrolysis gasification chamber, the burnout chamber and the discharge assembly in coordination; the pyrolysis gasification is thorough, resources are saved, and the ash discharge is smooth, the processing efficiency is improved, and the reaction is stable.

[0004] A dual-chamber biomass pyrolysis gasification furnace in the above technical solution optimizes the structure of the furnace body to prevent the accumulation of biomass raw materials inside the gasifier. In actual use, the production of tar by the gasifier is inevitable during use. Since tar has great viscosity, it is difficult to clean when tar combines with water or other substances. Utility Model Content

[0005] The purpose of the utility model is to provide a dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing incremental structure to solve the problem that the tar generated by the gasifier in the above-mentioned background technology during use is inevitable, and since the tar has a large viscosity, it is difficult to clean up when the tar combines with water or other substances.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure, comprising a shell and an isolation plate, wherein the isolation plate is fixedly connected to the inside of the shell, and the isolation plate divides the inside of the shell into independent spaces;

[0007] A gasifier structure is arranged inside the shell, and the gasifier structure includes a pyrolysis chamber and a gasification chamber fixedly connected to the inside of the first exhaust hole, and the bottom of the pyrolysis chamber and the top of the gasification chamber are fixedly connected to each other, and the inside of the pyrolysis chamber and the inside of the gasification chamber are communicated, the outer side of the lower end of the pyrolysis chamber and the outer side of the lower end of the gasification chamber are both arranged as a truncated cone structure with a wide top and a narrow bottom, and the outer sides of the lower ends of the pyrolysis chamber and the gasification chamber are fixedly connected with secondary heating wires, and the inner sides of the two secondary heating wires are respectively in contact with the outer sides of the lower ends of the pyrolysis chamber and the gasification chamber.

[0008] Preferably, the isolation plate divides the interior of the housing into a first exhaust chamber, a second exhaust chamber and a gasification chamber, and the first exhaust chamber is located outside the pyrolysis chamber, and the second exhaust chamber and the gasification chamber are located outside the gasification chamber.

[0009] Preferably, an exhaust pipe is fixedly connected to the outside of the shell, and the two ends of the exhaust pipe close to the shell are respectively connected to the inside of the first exhaust chamber and the second exhaust chamber, and a connecting pipe is fixedly connected to the side of the middle of the exhaust pipe away from the shell, and an air filling pipe is also fixedly connected to the outside of the shell, and one end of the air filling pipe close to the shell is connected to the inside of the air filling chamber.

[0010] Preferably, a feeding port is provided at the top of the pyrolysis chamber, and the feeding port extends to the top of the outer shell, a plurality of first exhaust holes distributed in a circular shape and equidistantly are provided on the outer side of the upper end of the pyrolysis chamber, and the plurality of first exhaust holes distributed in a circular shape and equidistantly are located inside the first exhaust chamber, and a main heating wire distributed in a spiral shape is fixedly connected to the outer side of the pyrolysis chamber.

[0011] Preferably, a connecting port is provided at the top of the gasification chamber, and the gasification chamber is fixedly connected to the bottom of the pyrolysis chamber through the connecting port, a plurality of second exhaust holes equidistantly distributed in a circular shape are provided on the outer side of the upper end of the gasification chamber, and the plurality of second exhaust holes equidistantly distributed in a circular shape are located inside the second exhaust chamber.

[0012] Preferably, a plurality of gas adding holes which are evenly distributed in a circular shape are provided on the outer side of the lower end of the gasification chamber, and a plurality of gas adding holes which are evenly distributed in a circular shape are located inside the gas adding chamber.

[0013] Preferably, a slag discharge pipe is fixedly connected to the bottom of the gasification chamber, and a transport screw rod is rotatably connected inside the slag discharge pipe, and the transport screw rod is driven by a motor.

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

[0015] The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing incremental structure is provided with a gasification furnace structure. When the biomass raw material passes through the bottom of the pyrolysis chamber, the radius of the biomass raw material will be reduced in the process of moving downward, so that the center of the biomass raw material is closer to the secondary heating wire, so that the center temperature of the biomass raw material will gradually increase as it moves downward. At the same time, the biomass raw material enters the gasification chamber through the connecting port, and after the gasification chamber moves to the bottom, the center temperature of the biomass raw material will gradually increase. By performing an incremental heating mode on the biomass raw material, the calorific value of the biomass can be more effectively utilized.

[0016] Furthermore, by using an incremental heating mode for biomass raw materials, the energy conversion efficiency is improved, and the temperature-sensing incremental structure helps to reduce the generation of tar, thereby reducing the difficulty and cost of subsequent gas purification treatment;

[0017] Furthermore, after the biomass raw materials are gasified inside the gasification chamber, they will be discharged into the slag discharge pipe through the bottom of the gasification chamber. At this time, the motor driving the transport screw rod is started to make the transport screw rod rotate inside the slag discharge pipe, and the slag inside the slag discharge pipe is discharged from the gasifier through the rotation of the transport screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the pyrolysis chamber of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the gasification chamber of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the secondary heating wire of the utility model;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the slag discharge pipe of the utility model.

[0024] In the figure: 1. outer shell; 2. isolation plate; 3. first exhaust chamber; 4. second exhaust chamber; 5. gas filling chamber; 6. exhaust pipe; 7. gas filling pipe; 8. connecting pipe; 9. pyrolysis chamber; 10. feeding port; 11. first exhaust hole; 12. main heating wire; 13. secondary heating wire; 14. gasification chamber; 15. connecting port; 16. second exhaust hole; 17. gas filling hole; 18. slag discharge pipe; 19. transport screw rod. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1:

[0027] See also Figure 1 - Figure 6 , the utility model provides the following technical solutions:

[0028] A dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure comprises a shell 1 and an isolation plate 2, wherein the isolation plate 2 is fixedly connected to the inside of the shell 1, and the isolation plate 2 separates the inside of the shell 1 into independent spaces;

[0029] A gasifier structure is arranged inside the outer shell 1, and the gasifier structure includes a pyrolysis chamber 9 and a gasification chamber 14 fixedly connected to the inside of the first exhaust hole 11, and the bottom of the pyrolysis chamber 9 and the top of the gasification chamber 14 are fixedly connected to each other, and the inside of the pyrolysis chamber 9 and the inside of the gasification chamber 14 are communicated, and the outer side of the lower end of the pyrolysis chamber 9 and the outer side of the lower end of the gasification chamber 14 are both arranged as a truncated cone structure with a wide top and a narrow bottom, and the outer side of the lower end of the pyrolysis chamber 9 and the gasification chamber 14 are fixedly connected to the secondary heating wire 13, and the inner sides of the two secondary heating wires 13 are respectively in contact with the outer sides of the lower ends of the pyrolysis chamber 9 and the gasification chamber 14.

[0030] The isolation plate 2 divides the interior of the housing 1 into a first exhaust chamber 3 , a second exhaust chamber 4 and a gasification chamber 5 , and the first exhaust chamber 3 is located outside the pyrolysis chamber 9 , and the second exhaust chamber 4 and the gasification chamber 5 are located outside the gasification chamber 14 .

[0031] An exhaust pipe 6 is fixedly connected to the outside of the outer shell 1, and the two ends of the exhaust pipe 6 close to the outer shell 1 are respectively connected to the inside of the first exhaust chamber 3 and the second exhaust chamber 4, and a connecting pipe 8 is fixedly connected to the side of the middle of the exhaust pipe 6 away from the outer shell 1. A gas filling pipe 7 is also fixedly connected to the outside of the outer shell 1, and the end of the gas filling pipe 7 close to the outer shell 1 is connected to the inside of the gas filling chamber 5.

[0032] A feeding port 10 is provided at the top of the pyrolysis chamber 9, and the feeding port 10 extends to the top of the outer shell 1, and a plurality of first exhaust holes 11 distributed in a circular shape and equidistantly are provided on the outer side of the upper end of the pyrolysis chamber 9, and the plurality of first exhaust holes 11 distributed in a circular shape and equidistantly are located inside the first exhaust chamber 3, and a main heating wire 12 distributed in a spiral shape is fixedly connected to the outside of the pyrolysis chamber 9.

[0033] A connecting port 15 is provided at the top of the gasification chamber 14, and the gasification chamber 14 is fixedly connected to the bottom of the pyrolysis chamber 9 through the connecting port 15. A plurality of second exhaust holes 16 equidistantly distributed in a circular shape are provided on the outer side of the upper end of the gasification chamber 14, and the plurality of second exhaust holes 16 equidistantly distributed in a circular shape are located inside the second exhaust chamber 4.

[0034] A plurality of gas adding holes 17 equidistantly distributed in a circular shape are provided on the outer side of the lower end of the gasification chamber 14 , and the plurality of gas adding holes 17 equidistantly distributed in a circular shape are located inside the gas adding chamber 5 .

[0035] A slag discharge pipe 18 is fixedly connected to the bottom of the gasification chamber 14 , and a transport screw rod 19 is rotatably connected inside the slag discharge pipe 18 , and the transport screw rod 19 is driven by a motor.

[0036] Embodiment 2:

[0037] Based on the first embodiment, the specific working principle is as follows:

[0038] The dual-chamber biomass pyrolysis gasification furnace provided with a temperature-sensing incremental structure adds the biomass raw material from the feeding port 10 into the pyrolysis chamber 9. At this time, the main heating wire 12 and the secondary heating wire 13 are energized to heat the biomass raw material, so that the temperature of the biomass raw material in the pyrolysis chamber 9 increases to produce a pyrolysis reaction. When the biomass raw material passes through the bottom of the pyrolysis chamber 9, the radius of the biomass raw material will shrink during the downward movement, so that the center of the biomass raw material is closer to the secondary heating wire 13, so that the center temperature of the biomass raw material will gradually increase as it moves downward. At the same time, the biomass raw material enters the gasification chamber 14 through the connecting port 15, and after the gasification chamber 14 moves to the bottom, the center temperature of the biomass raw material will gradually increase. By performing an incremental heating mode for the biomass raw material, the calorific value of the biomass can be more effectively utilized, and the energy conversion efficiency can be improved. At the same time, the temperature-sensing incremental structure helps to reduce the generation of tar, thereby reducing the difficulty and cost of subsequent gas purification treatment.

[0039] The pyrolysis chamber 9 and the gasification chamber 14 are connected to each other to form a whole. When the biomass raw material is pyrolyzed in the pyrolysis chamber 9, the biomass raw material will be heated to a higher temperature by the main heating wire 12 and the secondary heating wire 13. At the same time, the biomass raw material will enter the gasification chamber 14 and be further heated by the secondary heating wire 13 outside the gasification chamber 14. Air is transported to the gasification chamber 5 through the gasification pipe 7, so that the air enters the gasification chamber 14 through the gasification hole 17, thereby causing the biomass raw material in the gasification chamber 14 to be incompletely burned and produce gas. The gas will be discharged into the second exhaust chamber 4 through the second exhaust hole 16. At the same time, the gas will move downward along the gasification chamber 14 and the pyrolysis chamber 9 until it is discharged from the outer shell 1 into the first exhaust chamber 3. The gases in the first exhaust chamber 3 and the second exhaust chamber 4 will converge through the exhaust pipe 6, and then the gas will be discharged from the gasifier through the connecting pipe 8.

[0040] After the biomass raw materials are gasified inside the gasification chamber 14, they will be discharged into the slag discharge pipe 18 through the bottom of the gasification chamber 14. At this time, the motor driving the transport screw 19 is started to make the transport screw 19 rotate inside the slag discharge pipe 18. The slag inside the slag discharge pipe 18 is discharged from the gasifier through the rotation of the transport screw 19.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure, comprising a shell (1) and an isolation plate (2), wherein the isolation plate (2) is fixedly connected to the inside of the shell (1), and the isolation plate (2) divides the inside of the shell (1) into independent spaces; Features: A gasification furnace structure is arranged inside the shell (1), and the gasification furnace structure comprises a pyrolysis chamber (9) and a gasification chamber (14) fixedly connected to the inside of the first exhaust hole (11), and the bottom of the pyrolysis chamber (9) and the top of the gasification chamber (14) are fixedly connected to each other, and the inside of the pyrolysis chamber (9) and the inside of the gasification chamber (14) are communicated with each other, and the outer side of the lower end of the pyrolysis chamber (9) and the outer side of the lower end of the gasification chamber (14) are both configured as a truncated cone structure with a wide top and a narrow bottom, and the outer side of the lower end of the pyrolysis chamber (9) and the gasification chamber (14) are fixedly connected to the secondary heating wire (13), and the inner sides of the two secondary heating wires (13) are respectively in contact with the outer sides of the lower ends of the pyrolysis chamber (9) and the gasification chamber (14).

2. The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure according to claim 1, characterized in that: The isolation plate (2) divides the interior of the housing (1) into a first exhaust chamber (3), a second exhaust chamber (4) and a gasification chamber (5), and the first exhaust chamber (3) is located outside the pyrolysis chamber (9), and the second exhaust chamber (4) and the gasification chamber (5) are located outside the gasification chamber (14).

3. The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure according to claim 1, characterized in that: An exhaust pipe (6) is fixedly connected to the outside of the shell (1), and the two ends of the exhaust pipe (6) close to the shell (1) are respectively connected to the inside of the first exhaust chamber (3) and the second exhaust chamber (4), and a connecting pipe (8) is fixedly connected to the middle side of the exhaust pipe (6) away from the shell (1). An air filling pipe (7) is also fixedly connected to the outside of the shell (1), and the end of the air filling pipe (7) close to the shell (1) is connected to the inside of the air filling chamber (5).

4. The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure according to claim 1, characterized in that: The top of the pyrolysis chamber (9) is provided with a feed port (10), and the feed port (10) extends to the top of the outer shell (1); the outer side of the upper end of the pyrolysis chamber (9) is provided with a plurality of first exhaust holes (11) distributed in an annular shape and at equal intervals; the plurality of first exhaust holes (11) distributed in an annular shape and at equal intervals are located inside the first exhaust chamber (3); and a main heating wire (12) distributed in a spiral shape is fixedly connected to the outer side of the pyrolysis chamber (9).

5. The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure according to claim 1, characterized in that: The top of the gasification chamber (14) is provided with a communication port (15), and the gasification chamber (14) is fixedly connected to the bottom of the pyrolysis chamber (9) through the communication port (15); a plurality of second exhaust holes (16) distributed in an annular shape and at equal intervals are provided on the outer side of the upper end of the gasification chamber (14), and the plurality of second exhaust holes (16) distributed in an annular shape and at equal intervals are located inside the second exhaust chamber (4).

6. The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure according to claim 5, characterized in that: A plurality of gas-increasing holes (17) distributed in an annular shape and at equal intervals are provided on the outer side of the lower end of the gasification chamber (14), and the plurality of gas-increasing holes (17) distributed in an annular shape and at equal intervals are located inside the gas-increasing chamber (5).

7. The dual-chamber biomass pyrolysis gasification furnace with a temperature-sensing progressive structure according to claim 6, characterized in that: A slag discharge pipe (18) is fixedly connected to the bottom of the gasification chamber (14), and a transport screw rod (19) is rotatably connected inside the slag discharge pipe (18), and the transport screw rod (19) is driven by a motor.

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