A biomass liquid fuel extraction device

Abstract

The utility model relates to the technical field of biomass fuel extraction, and concretely relates to a biomass liquid fuel extraction device, which comprises a main casing, a rotating drum is arranged inside the main casing, wherein: the rotating drum comprises a mixing section and a separation section; a mixing assembly is arranged inside the rotating drum, wherein: the mixing assembly comprises a rotating pipe, helical vanes and stirring rods are fixedly connected to the outer side of the rotating pipe respectively, the helical vanes and the stirring rods are driven by the rotating pipe to rotate at high speed inside the mixing section, the material is promoted to mix fully, then the mixing section and the separation section rotate at high speed, centrifugal force is used to realize efficient separation by using the difference in settling speed of different components to extract liquid fuel in biomass, the integrated design of the overall device realizes the optimal matching of "weak centrifugal force mixing + strong centrifugal force separation", integrates the three links of mixing, extraction and separation in the same equipment, shortens the technological process, and improves the fuel extraction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of biomass fuel extraction technology, and more specifically, to a biomass liquid fuel extraction device. Background Technology

[0002] In recent years, the global energy consumption structure has continued to face severe challenges. On the one hand, reserves of traditional fossil fuels such as oil and coal are limited. According to the International Energy Agency (IEA), global proven oil reserves can only sustain consumption for about 50 years, making energy supply security an increasingly prominent issue. On the other hand, pollutants such as carbon dioxide and nitrogen oxides produced by the combustion of fossil fuels exacerbate global warming and environmental pollution. Biomass liquid fuels, as an important component of renewable energy, have a wide range of raw material sources, including agricultural and forestry waste, energy crops, and urban organic waste. They are carbon-neutral and can effectively reduce greenhouse gas emissions, playing a crucial role in the energy structure transformation process.

[0003] The extraction of biomass liquid fuels requires processes such as mixing, extraction, and separation. Each process is mostly carried out using separate equipment, which increases the process flow of liquid fuel extraction and reduces extraction efficiency. In addition, traditional extraction equipment relies on static mixing or simple stirring, resulting in large droplet diameters and low mass transfer coefficients, leading to long extraction times. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a biomass liquid fuel extraction device. It solves the problem that in traditional technologies, each step of the biomass liquid fuel extraction process is mostly carried out by separate equipment, which increases the process flow of liquid fuel extraction and reduces extraction efficiency.

[0005] To achieve the above objectives, this utility model provides a biomass liquid fuel extraction device, including a main shell, inside which a rotating drum is provided. The rotating drum includes a mixing section and a separation section. A mixing component is provided inside the rotating drum, including a rotating tube. Spiral blades and a stirring rod are fixedly connected to the outside of the rotating tube. The rotating tube drives the spiral blades and stirring rod to rotate at high speed inside the mixing section, promoting thorough mixing of materials. Then, the materials are separated at high speed through the mixing and separation sections, and centrifugal force is used to achieve efficient separation by utilizing the difference in sedimentation velocity of different components to extract liquid fuel from biomass.

[0006] The beneficial effects of this utility model are:

[0007] 1. During the extraction and mixing of raw materials, the drum rotates at low speed, and the rotating tube drives the spiral blades, stirring rod and nozzle to rotate at high speed inside the drum. The spiral blades push the biomass raw materials and extractant to move forward in a spiral motion in the mixing section, so that the materials and extractant are fully mixed and in contact. The stirring rod continuously stirs the materials, enhances the mass transfer process and improves the extraction efficiency.

[0008] 2. During the separation and extraction of fuel, the high-speed rotation of the drum provides centrifugal force to achieve efficient separation of components and extract liquid fuel from biomass. The integrated design of the whole device achieves the optimal match of "weak centrifugal force mixing + strong centrifugal force separation", integrating the three links of mixing, extraction and separation into the same equipment, shortening the process flow and improving fuel extraction efficiency.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Preferably, a first discharge pipe is fixedly connected to one end of the bottom of the main housing, a second discharge pipe is fixedly connected to the other end of the bottom of the main housing, and a feed pipe is symmetrically fixedly connected inside one end of the main housing.

[0011] The beneficial effects of adopting the above-mentioned further solutions are that they enable continuous material feeding and discharging, reduce energy consumption losses from intermittent operations, and improve equipment utilization.

[0012] Preferably, the inner side of the main housing is fixedly connected with several buffer protrusions in a ring shape.

[0013] The beneficial effects of adopting the above-mentioned further solution are that it buffers the shaking generated by the high-speed rotation of the drum, reduces the impact on the main housing, effectively improves the stability of the main housing, and at the same time reduces the wear caused by the contact between the main housing and the drum, thus extending the service life of the device.

[0014] Preferably, the diameter of the through-hole inside the separation section is larger than the diameter of the through-hole inside the mixing section.

[0015] The beneficial effect of adopting the above-mentioned further solution is that by increasing the resistance of the inner wall of the mixing section, the liquid discharge is slowed down, and the liquid is prevented from being thrown out through the through hole during the mixing process, which would lead to insufficient mixing or material loss.

[0016] Preferably, a plurality of nozzles are fixedly connected to one side of the rotating tube, and a delivery tube is rotatably connected to one end of the rotating tube.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that by conveying the extractant into the rotating tube through the conveying pipe and spraying it into the rotating drum through the nozzle, the two phase materials form a highly dispersed system in the initial stage of mixing, which enhances the mass transfer process and improves the extraction efficiency.

[0018] Preferably, a rotating shaft is fixedly connected to one side of the support inside the separation section, one end of the rotating shaft is fixedly connected to the output end of the first motor, a first gear is fixedly connected to one end of the outer side of the rotating tube, a second gear is meshed with the outer side of the first gear, and one side of the second gear is fixedly connected to the output end of the second motor.

[0019] The beneficial effect of adopting the above-mentioned further solution is that it enables the movement state of the drum and mixing components to be adjusted in real time according to different processing steps, thereby improving the extraction effect of the device.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] By integrating the mixing, extraction, and separation processes into a single device through components such as the main shell, rotating drum, and mixing assembly, the process flow is shortened and fuel extraction efficiency is improved. The rotating drum and mixing assembly are independently controlled. On one hand, the low-speed rotation of the drum drives the spiral blades, stirring rod, and nozzles to rotate at high speed inside the drum. The spiral blades propel the biomass feedstock and extractant in a spiral motion within the mixing section, ensuring thorough mixing and contact between the materials and extractant. The stirring rod continuously agitates the materials, and the conveying pipe delivers the extractant into the rotating tube and sprays it into the drum through the nozzles. This ensures that the two phases form a highly dispersed system in the initial mixing stage, enhancing the mass transfer process and improving extraction efficiency. On the other hand, the high-speed rotation of the drum provides centrifugal force, achieving efficient separation to extract liquid fuel from the biomass. The integrated design of the entire device achieves an optimal match of "weak centrifugal mixing + strong centrifugal separation," integrating the three processes into a single device, shortening the process flow, and improving fuel extraction efficiency. Attached Figure Description

[0022] Figure 1 This is an isometric structural diagram of one side of the present invention;

[0023] Figure 2 This is a schematic diagram of the isometric structure on the other side of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 4 This is a front cross-sectional view of the present invention.

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Main housing; 11. First discharge pipe; 12. Second discharge pipe; 13. Feed pipe; 14. Buffer protrusion;

[0028] 2. Drum; 21. Mixing section; 22. Separation section; 23. Shaft; 24. First motor;

[0029] 3. Mixing component; 31. Rotating tube; 32. Spiral blade; 33. Stirring rod; 34. Nozzle; 35. Conveying pipe; 36. First gear; 37. Second gear; 38. Second motor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4 As shown, this embodiment provides a biomass liquid fuel extraction device, including a main shell 1. Considering that in traditional technologies, each step of biomass liquid fuel extraction is mostly processed using separate equipment, thus increasing the process flow and reducing extraction efficiency, a rotating drum 2 is provided inside the main shell 1. The rotating drum 2 includes a mixing section 21 and a separation section 22. A mixing component 3 is provided inside the rotating drum 2. The mixing component 3 includes a rotating tube 31, with a spiral blade 32 and a stirring rod 33 fixedly connected to the outside of the rotating tube 31. The rotating tube 31 drives the spiral blade 32 and the stirring rod 33 to rotate at high speed inside the mixing section 21, promoting... The materials are thoroughly mixed, which is more efficient and reduces extraction time compared to traditional static extraction methods. Then, the mixture is subjected to high-speed rotation in mixing section 21 and separation section 22. The biomass extract is usually composed of liquid fuel (such as bio-oil, ethanol), residual solvent, solid particles and aqueous phase. Due to differences in density and viscosity, each component will have different trajectories in the centrifugal force field. Under the action of centrifugation, high-density components (such as solid particles and aqueous phase) migrate to the outer wall of mixing section 21 and separation section 22, while low-density components (liquid fuel, light solvent) gather in the central area of ​​separation section 22. The difference in settling velocity of different components is used to achieve efficient separation to extract liquid fuel from biomass.

[0032] In summary, the improvement of this embodiment lies in:

[0033] On the one hand, by rotating the drum 2 at low speed, the rotating tube 31 drives the spiral blades 32, stirring rods 33 and nozzles 34 to rotate at high speed inside the drum 2. The spiral blades 32 push the biomass raw materials and extractant to move in a spiral motion in the mixing section 21, so that the materials and extractant are fully mixed and in contact. The stirring rods 33 continuously stir the materials, strengthen the mass transfer process, and improve the extraction efficiency.

[0034] On the other hand, by rotating the drum 2 at high speed, centrifugal force is provided to achieve efficient separation of components to extract liquid fuel from biomass. The integrated design of the whole device achieves the optimal match of "weak centrifugal force mixing + strong centrifugal force separation", integrating the three links of mixing, extraction and separation into the same equipment, shortening the process flow and improving fuel extraction efficiency.

[0035] Based on the above, other structures also need to be disclosed in detail, such as:

[0036] To achieve continuous material feeding and discharge and reduce energy loss from intermittent operation, a first discharge pipe 11 is fixedly connected to one end of the bottom of the main shell 1, a second discharge pipe 12 is fixedly connected to the other end of the bottom of the main shell 1, and feed pipes 13 are symmetrically fixedly connected inside one end of the main shell 1. Biomass raw materials enter the main shell 1 and the rotating drum 2 through the feed pipe 13; the separated liquid fuel is discharged from the first discharge pipe 11, and the high-density liquid material is discharged from the second discharge pipe 12. This allows for continuous material feeding and discharge, improving the utilization rate of the equipment.

[0037] To ensure the stability of the device during use, several buffer protrusions 14 are fixedly connected in a ring shape on the inner side of the main housing 1. The buffer protrusions 14 contact the outer surface of the drum 2 to buffer the shaking caused by the high-speed rotation of the drum 2, reduce the impact on the main housing 1, effectively improve the stability of the main housing 1, and at the same time reduce the wear caused by the contact between the main housing 1 and the drum 2, thus extending the service life of the device.

[0038] Considering that if the through holes on the drum 2 do not form an effective seal during the mixing stage, the liquid will be thrown outward through the through holes under the action of centrifugal force, resulting in insufficient mixing or material loss, the diameter of the through holes inside the separation section 22 is larger than the diameter of the through holes inside the mixing section 21. By increasing the resistance of the inner wall of the mixing section 21, the liquid leakage is slowed down. During the mixing process, the rotation of the spiral blades 32 generates axial turbulence, which promotes material mixing. At the same time, the spiral blades 32 obstruct the liquid flowing towards the through holes. The mixing component 3 rotates at high speed, while the drum 2 rotates at low speed, forming a composite field of "weak centrifugal force + strong stirring". This reduces the radial movement of the liquid towards the through holes and strengthens the mixing. During separation, the drum 2 rotates at high speed, the mixing component 3 stops rotating, and the through holes open to achieve rapid separation.

[0039] To improve the efficiency of the gentle extraction process, several nozzles 34 are fixedly connected to one side of the rotating tube 31, and a conveying pipe 35 is rotatably connected to one end of the rotating tube 31. The extractant is conveyed into the rotating tube 31 through the conveying pipe 35 and sprayed into the rotating drum 2 through the nozzles 34, so that the two phase materials form a highly dispersed system in the initial stage of mixing, which enhances the mass transfer process and improves the extraction efficiency. Furthermore, the interior of the device can be cleaned by spraying cleaning liquid into the rotating drum 2 through the nozzles 34, eliminating the need for manual disassembly and cleaning, reducing maintenance costs, and improving the device's operational capability.

[0040] To enable real-time adjustment of the motion state of the drum 2 and mixing component 3 according to different processing steps, a rotating shaft 23 is fixedly connected to one side of a support inside the separation section 22. One end of the rotating shaft 23 is fixedly connected to the output end of the first motor 24. The rotation speed of the drum 2 is adjusted by the first motor 24. A first gear 36 is fixedly connected to one end of the outer side of the rotating tube 31. A second gear 37 is meshed with the outer side of the first gear 36. One side of the second gear 37 is fixedly connected to the output end of the second motor 38. The second motor 38 drives the second gear 37 to rotate. The meshing transmission between the first gear 36 and the second gear 37 drives the first gear 36 to drive the rotating tube 31 and other components to rotate, allowing dynamic adjustment of the mixing intensity and separation speed according to the material characteristics.

[0041] In summary, the working principle of this solution is as follows:

[0042] First, the biomass feedstock and extractant are fed into the rotating drum 2 inside the main housing 1 through the feed pipe 13. At this time, the first motor 24 drives the rotating drum 2 to rotate at a low speed, while the second motor 38 drives the rotating tube 31 to rotate at a high speed via the first gear 36 and the second gear 37. The spiral blades 32 on the outside of the rotating tube 31 propel the material in a spiral motion within the mixing section 21, ensuring full contact between the two phases. The stirring rod 33 applies shear force to the fluid, and the extractant enters the rotating tube 31 through the conveying pipe 35 and is sprayed at high pressure by the nozzle 34, forming a highly dispersed mixed system, enhancing the mass transfer process and improving extraction efficiency. The diameter of the through-hole in the mixing section 21 is designed to be smaller than that in the separation section 22. Combined with the weak centrifugal force generated by the low-speed rotation of the rotating drum 2 and the axial guiding effect of the spiral blades 32, this effectively slows down liquid leakage. At this time, the device forms a "weak centrifugal force + strong stirring" composite field, which reduces the radial movement of liquid towards the through-hole and enhances mixing. After mixing is complete, the first motor 24 rotates the rotating drum 2 at high speed, forming a centrifugal force field. At this time, the large-diameter through hole of the separation section 22 is opened, and the high-density components (aqueous phase, solid particles) migrate to the outer wall of the drum 2 under the action of centrifugal force and are discharged through the second discharge pipe 12; the low-density components (liquid fuel, light solvent) gather towards the center and are discharged through the first discharge pipe 11.

[0043] The device achieves dynamic parameter adjustment through a dual-motor independent control system: based on material characteristics, the PLC automatically adjusts the rotation speed of drum 2 and the stirring intensity of mixing component 3. During the mixing stage, the counter-rotation of drum 2 and mixing component 3 enhances the turbulence effect; during the separation stage, stirring is stopped to reduce energy loss. During use, the buffer protrusions 14 on the inner wall of the main housing 1 buffer vibration and reduce wear. For subsequent cleaning, cleaning agent is injected into drum 2 through nozzle 34, eliminating the need for manual disassembly and cleaning, reducing maintenance costs, and improving the device's operational connectivity.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biomass liquid fuel extraction device, comprising a main shell (1), characterized in that: The main housing (1) is provided with a rotating drum (2), wherein: the rotating drum (2) includes a mixing section (21) and a separation section (22); the rotating drum (2) is provided with a mixing component (3), wherein: the mixing component (3) includes a rotating tube (31), and a spiral blade (32) and a stirring rod (33) are fixedly connected to the outside of the rotating tube (31). The spiral blade (32) and the stirring rod (33) are driven by the rotating tube (31) to rotate at high speed inside the mixing section (21) to promote full mixing of materials. Then, the materials are rotated at high speed through the mixing section (21) and the separation section (22), and centrifugal force is used to achieve efficient separation by utilizing the difference in sedimentation velocity of different components to extract liquid fuel from biomass.

2. The biomass liquid fuel extraction device according to claim 1, characterized in that: The bottom of the main housing (1) is fixedly connected to a first discharge pipe (11), the bottom of the main housing (1) is fixedly connected to a second discharge pipe (12), and the inside of one end of the main housing (1) is symmetrically fixedly connected to a feed pipe (13).

3. The biomass liquid fuel extraction device according to claim 1, characterized in that: The inner side of the main housing (1) is fixedly connected with several buffer protrusions (14) in a ring shape.

4. The biomass liquid fuel extraction device according to claim 1, characterized in that: The diameter of the through hole inside the separation section (22) is larger than the diameter of the through hole inside the mixing section (21).

5. The biomass liquid fuel extraction device according to claim 1, characterized in that: The separation section (22) has a rotating shaft (23) fixedly connected to one side of a support at one end, and one end of the rotating shaft (23) is fixedly connected to the output end of the first motor (24).

6. The biomass liquid fuel extraction device according to claim 1, characterized in that: A plurality of nozzles (34) are fixedly connected to one side of the rotating tube (31), and a delivery tube (35) is rotatably connected to one end of the rotating tube (31).

7. The biomass liquid fuel extraction device according to claim 1, characterized in that: One end of the outer side of the rotating tube (31) is fixedly connected to a first gear (36), and a second gear (37) is meshed with the outer side of the first gear (36). One side of the second gear (37) is fixedly connected to the output end of the second motor (38).

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